CN107208810B - Lining type butterfly valve - Google Patents
Lining type butterfly valve Download PDFInfo
- Publication number
- CN107208810B CN107208810B CN201680007568.3A CN201680007568A CN107208810B CN 107208810 B CN107208810 B CN 107208810B CN 201680007568 A CN201680007568 A CN 201680007568A CN 107208810 B CN107208810 B CN 107208810B
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- valve
- lining
- aforementioned
- sealing
- world
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- 238000007789 sealing Methods 0.000 claims abstract description 184
- 239000012530 fluid Substances 0.000 claims abstract description 43
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000011347 resin Substances 0.000 description 39
- 229920005989 resin Polymers 0.000 description 39
- 239000002184 metal Substances 0.000 description 15
- 238000010276 construction Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 9
- 230000035882 stress Effects 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
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- 229920001971 elastomer Polymers 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 239000002904 solvent Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2265—Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2268—Sealing means for the axis of rotation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A kind of butterfly valve is provided, it is the lining type butterfly valve with the corrosion resistance relative to fluid, world leakproofness and sealing can be improved simultaneously and be prevented securely from leakage, by fluid pressure and valve disc mobile to secondary side in the case where, is also able to maintain that their leakproofness.It is equipped with the valve disc (12) covered by lining portion (32) freely via valve rod (13) opening and closing in the tubular valve body (11) covered by valve seat lining (20).The sealing position (18) of valve rod (13) is clamped between circle body (22) and valve rod (13), thus the expanding of the sealing position (18) is prevented, and the valve seat lining (20) being located in the boss face (37) in the world of valve disc (12) is pushed via circle body (22) with the bounce of the spring (44) in the axis dress portion (27) for being located at valve body (11), thus keeps the leakproofness of the world sealing position (19).
Description
Technical field
The present invention relates to the lining type butterfly valves that resin lining is implemented on valve body and clack box inner peripheral surface, in particular to mention
The butterfly valve of the leakproofness of the sealing near sites of the world side and valve stick of high valve body.
Background technique
In the past, as in the facility of chemical industry using and in the case where flow through highly corrosive fluid or
Butterfly valve used in associated flow path of food etc., it is known to which the metal core of valve body is covered by resin interlining inner layer, in valve
The butterfly valve of the so-called lined piping construct of resin seat ring is assembled on the inner peripheral surface of case.The valve body lining of the lining type butterfly valve
Layer and resin seat ring are formed by resin materials such as PTFE or PFA, are not contacted with fluid other than these materials, so being suitable for play
Strong corrosive fluids, the chemical fluid such as chlorine or hydrochloric acid, medical fluid, food, solvent etc..
In this lining type butterfly valve, in order to prevent from the world side of valve body or the stream of the sealing near sites of valve stick
The External leakage of body is periodically equipped with multiple seal constructions in its vicinity.The seal construction of world side is referred to as so-called day
Ground sealing, is arranged as once sealing.In the sealing of the world, the resin seat ring in the inner circumferential of clack box is assemblied in respectively by valve body
The world, that is, top, lower side valve stick insertion hole surrounding face push and seal, prevent the fluid downstream from upstream side
Pass through leakage, and prevent at the position near valve body-side from the fluid leakage around the valve stick being connected on valve body.
The seal construction at the sealing position of valve stick is referred to as so-called sealing, more leans in the once sealing than butterfly valve
At the axial foreign side position of valve stick, to be arranged with valve stick same heart shaped as secondary seal.In sealing, prevent around valve stick
Fluid leakage, and prevent the fluid between clack box and resin seat ring from leaking (so-called back side leakage).
In turn, have at the axial foreign side position for more leaning on valve stick than secondary seal, as sealing three times and configure O-ring etc.
Thus the case where seal member, further prevents from the fluid leakage around valve stick.
As the structure equipped with such multiple seal constructions, such as disclose the butterfly valve of patent document 1,2.In patent
In document 1, the supporting mass that resin seat ring is arranged on inner circumferential side is kept, and the diameter of valve body is bigger than resin seat ring.Resin as a result,
Seat ring by compression and the world sealing function, on the other hand, wheel shape part as a seal part is fixed with washer, thus
Function sealing by wheel shape part, the washer is kept by the shoulder being formed on valve body hole.
In patent document 2, by the liner being located between valve body and resin seat ring and the world sealing function, borrow
Help the clamping device for being located at the axial secondary side of the world sealing position and sealing functions.
In this way, the 1st axis to valve stick as the world sealing of once sealing and as secondary seal is close in these valves
Envelope is with construction setting independently, by each sealing position setting world sealing and sealing.
On the other hand, it in the butterfly valve of patent document 3~5, is set as pushing away in the world seals using by spring bring
The construction of pressure.
In the butterfly valve of patent document 3, cylindric plug is rebounded to boss position side from spring, thus implements conduct
The world of once sealing between resin seat ring and valve body seals, by being located between cylindric plug and resin seat ring
O-ring, equipped with the sealing as secondary seal.
In the butterfly valve of patent document 4, circle will push against by disc spring and push, by the sealing ring pushed by the pushing circle,
World sealing and sealing function.
In patent document 5, via by spring-biased parts of bearings by elastomer as a seal part in the axial direction
It pushes, by the elastomer, world sealing and sealing are functioned.
In addition, covering resin serves as a contrast on metal core 2 in the butterfly valve 1 being shown in FIG. 9 as comparative example
Inner layer 3 and be equipped with discoid valve body 4, resin seat ring 5 is assembled on the inner peripheral surface of clack box 9.In turn, resin interlining inner layer 3
Extend in the axial direction along the valve stick 6 being assemblied on valve body 4 and form valve stick covering part 7, in the outer peripheral surface of the valve stick covering part 7
Resin seat ring 5 along the extended extension covering part 8 of valve stick 6, is therefore ensured that leakproofness by upper configuration.
In addition, in butterfly valve, it is known that in the case where applying fluid pressure from primary side under valve closed state, in the fluid pressure
Effect lower valve body moves slightly to secondary side.For example, in the butterfly valve of nominal diameter 100A, from primary side under valve closed state
In the case where the hydraulic pressure for applying 1.0MPa, valve body moves about 0.2mm or so to secondary side.
Patent document 1: Japanese Unexamined Patent Application 52-90815 bulletin.
Patent document 2: No. 3863563 bulletins of Japanese Patent Publication No..
Patent document 3: Japanese Unexamined Patent Application 61-119881 bulletin.
Patent document 4: the real public clear 58-56463 bulletin of Japan.
Patent document 5: No. 2920364 bulletins of Japanese Patent Publication No..
In the butterfly valve of patent document 1 and 2, both world sealing and sealing from the independent state of spring to set
It sets, the diameter of valve body is bigger than resin seat ring internal diameter in patent document 1, in patent document 2 by being located at valve body and resin
Liner between seat ring functions world sealing.Due to being such construction, so because of lining resin
The brings such as temperature change or aging deteriorate in the case where leakproofness decline, cannot utilize spring for leakproofness decline
Bounce, which seals the world, to be restored.Thus, it is difficult to maintain world leakproofness and sealing.
On the other hand, it in the butterfly valve of patent document 3~5, seals, is can be realized by bullet by using the world of spring
The recovery of the bounce bring world sealing of spring, but it is respectively provided with following problem.
The butterfly valve of patent document 3 is the construction that O-ring is used in secondary seal, is using rubber as the O-ring
In the case where glue class material, it is impossible to be used in the corrosive fluid of chlorine etc..It is thus impossible to ensure secondary seal, the use of valve is also resulted in
Way is defined.
In the butterfly valve of patent document 4, the pushing force of disc spring, which is arranged on, pushes circle and the conical surface on sealing ring to the world
It seals direction and sealing direction force is decomposed, so the leakproofness of the other side dies down if the sealing force of certain side is made to become strong,
The sealing force of both sides cannot be effectively improved.Keep the sealing of these world and axis close well and it is further desired that being balanced
The adjustment of envelope, the adjustment also become difficult.
In patent document 5, the pushing force of spring is also decomposed into once sealing and secondary using the conical surface power of elastomer
Sealing, so having the problem same as patent document 4.
In addition, in Patent Documents 1 to 5 and as in the butterfly valve 1 for comparing the Fig. 9 exemplified, when for example in the butterfly of Fig. 9
On valve 1 with it is fully closed when state apply fluid pressure from primary side, when valve body 4 as shown in Figure is mobile to secondary side, resin interlining
Inner layer 3 is also mobile to secondary side.In the case, the world side of resin interlining inner layer 3 is relative to resin seat ring 5 to secondary lateral deviation
It leans on, adhesion is deteriorated, 6 periphery of valve stick of the world side for the valve body 4 realized by these resin interlining inner layers 3 and resin seat ring 5
With the leakproofness of clack box 9, i.e. world leakproofness decline, it is possible to so-called primary leakage occurs.
In turn, in Fig. 9, with the movement of valve body 4, valve stick 6 is mobile to secondary side, thus valve stick covering part 7 and extension
The adhesion of covering part 8 is also deteriorated, by the sealing of valve stick 6 and clack box 9 that these valve stick covering parts 7 and extension covering part 8 are realized
Property, i.e. valve stick 6 sealing decline, it is possible to so-called secondary leakage occurs.
Summary of the invention
The present invention is the invention developed in order to solve conventional problems, is tool the purpose is to provide a kind of butterfly valve
Have the lining type butterfly valve of the corrosion resistance relative to fluid, world leakproofness and sealing can be improved simultaneously and effectively
It prevents from leaking, even if being also able to maintain that its leakproofness in the case where valve disc is mobile to secondary side due to fluid pressure.
To achieve the goals above, it is related to the invention of technical solution 1, is a kind of lining type butterfly valve, is in cylindrical valve
Be equipped with the butterfly valve of valve disc in body freely via valve rod opening and closing, the tubular valve body is covered by valve seat lining, the valve disc by
Lining portion covering, in the expansion for preventing the sealing position and sealing position of valve rod is clamped between circle body and valve rod
Diameter and the boss for being located at the world of valve disc by being pushed with the bounce for the spring being located in the axis dress portion of valve body via circle body
Valve seat lining on face and in the state of keeping the leakproofness of the world sealing position, the inner circumferential in tubular lining portion is formed with ring
The heavy wall sealing of shape presses against the heavy wall sealing on the periphery in beam barrel lining portion, and tubular lining portion is extended
On valve seat lining, beam barrel lining portion is extended in the lining portion of valve disc.
It is related to the invention of technical solution 2, is a kind of lining type butterfly valve, world sealing position pushes the day of valve disc strongly
The periphery neighbouring position in the seal boss face on ground.
It is related to the invention of technical solution 3, is a kind of lining type butterfly valve, circle body is via the sealing lining for being located at sealing position
The cyclic annular flange department urging valve seat lining of set.
It is related to the invention of technical solution 4, is a kind of lining type butterfly valve, on the bottom surface of cyclic annular flange department, is equipped with direction
Outer diameter declines the inclined conical surface.
It is related to the invention of technical solution 5, is a kind of lining type butterfly valve, section chevron shape is formed on heavy wall sealing
Conical surface portion.
It is related to the invention of technical solution 6, is a kind of lining type butterfly valve, is clipped in the cylindrical portion being formed on seal cartridge
Between tubular lining portion and circle body, the expanding of tubular lining portion is prevented via cylindrical portion by circle body.
It is related to the invention of technical solution 7, is a kind of lining type butterfly valve, makes the interior O being inserted in the cylindrical portion of seal cartridge
The sliding contact of shape circle is in the tubular lining portion of valve seat lining.
It is related to the invention of technical solution 8, is a kind of lining type butterfly valve, valve rod and valve disc is formed seperatedly.
It is related to the invention of technical solution 9, is a kind of lining type butterfly valve, by the flow path mouth and flange part of the valve body of short tubular
Covered with valve seat lining, at the edge part position of the flow path portion side of flange part, equipped with ought fluid when fully closed depress valve disc
When being moved slightly with valve rod to secondary side, valve seat lining can follow mobile mobile space.
It is related to the invention of technical solution 10, is a kind of lining type butterfly valve, lining portion has the upper and lower boss of valve disc
The boss face and extend from the beam barrel lining portion on the periphery that the boss face is covered on valve rod, and above and below valve seat lining that portion covers
It is provided with and is extended in flow path portion from flange part and seals company with the sealing surface of boss face sealed connection and from the sealing surface
It is connected to the tubular lining portion of the periphery in beam barrel lining portion, and by following valve disc to the movement of secondary side and by mobile space
The movement of the flow path portion of bring valve seat lining maintains the sealing of the world of boss face and sealing surface and beam barrel lining portion and tubular
The leakproofness of the sealing in lining portion.
It is related to the invention of technical solution 11, is a kind of lining type butterfly valve, mobile space is by the side of the flow path mouth of valve body
Edge valve body end face lateral incision and the conical surface that is formed.
It is related to the invention of technical solution 12, is a kind of lining type butterfly valve, mobile space is by the side of the flow path mouth of valve body
The stage portion face that edge is formed with stage portion shape notch.
It is related to the invention of technical solution 13, is a kind of lining type butterfly valve, mobile space is the flow path for being located at valve seat lining
The cone space of cone cell at portion and the coupling part of flange end.
According to the invention of technical solution 1 is related to, covered by the tubular valve body covered by valve seat lining and by lining portion
Valve disc has corrosion resistance relative to fluid, pushes the boss face for being located at the world of valve disc via circle body with the bounce of spring
On valve seat lining and keep the leakproofness of world sealing position, the world leakproofness as once sealing is thus improved, with this
Meanwhile the sealing position of valve rod being clamped between circle body and valve rod and prevents the expanding of shaft sealing, thus, it is possible to improve
Sealing.Both in the case, these world leakproofness and sealing will not mutually bring adverse effect, be able to maintain
And it is prevented securely from leakage.Further, it is possible to circle body sharing be ensured in world leakproofness and sealing, so also inhibiting
The increase of part number of packages and be conducive to simplify internal structure.World leakproofness is kept using the bounce of spring, so i.e.
Make also restore leakproofness in the case where the resin as lining material is deteriorated because of temperature change or aging.It is assembling
When, world leakproofness and sealing can be increased to set sealing force by the assembly of circle body, so not needing to adjust
The loading of each sealing force, circle body is relatively easy to.By the cricoid heavy wall sealing in the inner circumferential for being formed in tubular lining portion to prolonging
The periphery for stretching the beam barrel lining portion being arranged in the lining portion of valve disc pushes, thus when valve rod is inserted into beam barrel lining portion
When, heavy wall sealing is crimped by the outside diameter in the beam barrel lining portion, on the heavy wall sealing applies radial pushing force and close
It connects, thus, it is possible to obtain the sealing state at sealing position.In the case, by cricoid heavy wall sealing to tubular lining portion
It pushes, thus, it is possible to locally obtain higher leakproofness, so preventing the leakage between tubular lining portion and beam barrel sealing.
The rising of their frictional resistance and the opening and closing operations torque of check valve can be reduced, and ensure sealing.
According to the invention of technical solution 2 is related to, strongly near the periphery in the seal boss face in the world of pushing valve disc, by
This reduces the resistance to sliding of the abutting portion of the seal boss face and valve seat lining, can be in the opening and closing operations torque for preventing valve
World leakproofness is improved while rising, further, it is possible to maintain the world leakproofness using spring.
According to being related to the invention of technical solution 3, via cyclic annular flange department by the pushing force of spring from circle body to valve seat lining
The case where transmitting, thus directly pushing resin valve seat lining from metal circle body is different, prevents the part of valve seat lining
The deformation of property, prevents the damage of the valve seat lining, and maintain world leakproofness.
According to the invention of technical solution 4 is related to, the seal boss face in the world of valve disc is effectively relatively pushed by force by the conical surface
Periphery nearby ensures world leakproofness.
According to being related to the invention of technical solution 5, the conical surface portion of Formation cross-section chevron shape, the thus conical surface portion and tubular lining
The boundary part in portion is easy to disperse along with the stress of the pushing with beam barrel lining portion with the extension of foot of the hill shape.Therefore, inhibit thick
The deformation of the locality of wall sealing and creep is also reduced, prevent the reduction of leakproofness, maintain sealing and effectively
It prevents from leaking.
According to the invention of technical solution 6 is related to, the elastic force of the cylindrical portion of seal cartridge can be utilized tubular lining portion
It is pushed to the periphery in beam barrel lining portion and maintains sealing.
According to the invention of technical solution 7 is related to, using the world seal construction for using spring, and can will be in the world
Seal cartridge used in sealing is used to prevent by the expanding of the sealing position three times of O-ring progress, so can be by sealing lining
Set realizes the sharing of part, and improves leakproofness three times and maintain sealing.
According to the invention of technical solution 8 is related to, valve disc with lining is being encased in the cylindrical valve covered by valve seat lining
After in body, valve rod is only inserted into the leakproofness that sealing position is ensured that in valve disc.Therefore, whole assembling operation
It becomes easy, additionally it is possible to realize the densification of valve disc by making valve rod fission, and ensure world leakproofness and sealing
Property.
According to being related to the invention of technical solution 9, even if valve disc is to secondary side mobile under the effect of fluid pressure when valve is closed
In the case of, valve seat lining also can follow movement via mobile space, can prevent primary between valve seat lining and lining portion
It leaks and maintains world leakproofness, and prevent secondary leakage and maintain sealing, thus, it is possible to by highly corrosive fluid, chlorine
The fluids such as the chemical fluids such as gas, medical fluid are effectively closed.Also, the mobile space of valve seat lining is only set, so plus
Work and formability are also good, can carry out in check valve seat pad and while the complication of lining portion and valve body shape
Production.Further, it is possible to ensure the wall thickness of valve seat lining, valve disc lining, so being also able to maintain that the resistance to permeability of fluid.
According to the invention of technical solution 10 is related to, valve disc is followed to the movement of secondary side and the flow path portion of valve seat lining is borrowed
Mobile space is helped to move, thus it enables that sealing surface, tubular lining portion are relative to the boss moved together with valve disc to secondary side
Face, beam barrel lining portion are followed and maintain sealing state.Thereby, it is possible to prevent the primary leakage between boss face and sealing surface
And the world leakproofness of valve body and valve disc is maintained, it prevents the secondary leakage between beam barrel lining portion and tubular lining portion and maintains valve
The sealing of body and valve disc can be prevented securely from the leakage of fluid.
According to the invention of technical solution 11 is related to, can be deformed in the case where not constraining the flow path portion of valve seat lining, when
Flow path portion can be made swimmingly to deform along the conical surface when valve disc and valve rod mobile to secondary side and follow valve seat lining, additionally it is possible to
Prevent the stress at the contact portion with valve body of valve seat lining from concentrating.Movement can be easily formed on valve body by the conical surface
Space, so not needing to implement to process to valve seat lining, formability improves, and does not also need to make the thickness of valve seat lining to become
It is thin, so being also able to maintain that the resistance to permeability to fluids such as chlorine.
According to the invention of technical solution 12 is related to, higher precision is not needed in valve body side, it can be by simple processing
Stage portion face is formed, can effectively make the flow path portion of valve seat lining via the stage portion face to follow valve disc and valve rod two
The mobile mode in secondary side deforms.It does not need that valve seat lining is implemented to process as a result, so formability improves, and does not need yet
Keep the thickness of valve seat lining thinning, so being also able to maintain that the resistance to permeability to fluids such as chlorine.
According to being related to the invention of technical solution 13, can in the case where not implementing to process to valve body valve seat lining at
Cone space is arranged while processing in shape, so being able to suppress the increase of the flow chart number for forming cone space.It can be via
It is deformed in a manner of the secondary side that cone space effectively makes the flow path portion of valve seat lining to follow valve disc and valve rod is mobile.
Detailed description of the invention
Fig. 1 is the central longitudinal section view for indicating the embodiment of lining type butterfly valve of the invention.
Fig. 2 is the central longitudinal section view of the lining type butterfly valve of Fig. 1.
Fig. 3 is the main enlarged view of a portion of Fig. 2.
Fig. 4 is the enlarged partial sectional view indicated near heavy wall sealing.
Fig. 5 is the enlarged partial sectional view indicated near seal cartridge.
Fig. 6 is to indicate that the valve disc of Fig. 3 is moved to the main enlarged view of a portion of the state of secondary side.
Fig. 7 is the main enlarged view of a portion for indicating the 2nd embodiment of lining type butterfly valve of the invention.
Fig. 8 is the main enlarged view of a portion for indicating the 3rd embodiment of lining type butterfly valve of the invention.
Fig. 9 is the main enlarged view of a portion for indicating previous butterfly valve.
Description of symbols
10 valve bodies
11 valve bodies
12 valve discs
13 valve rods
15 flow path mouths
16 flange parts
18 sealing positions
19 world sealing positions
20 valve seat linings
22 circle bodies
23 seal cartridges
23a cylindrical portion
23b ring-type flange department
24 O-rings
26 conical surfaces
27 axis dress portions
30 flow path portions
31 sealing surfaces
32 lining portions
33 beam barrel lining portions
34 tubular lining portions
36 boss portions
37 boss faces
40 conical surfaces (mobile space)
42 heavy wall sealings
43 conical surface portions
44 springs
51 stage portion faces (mobile space)
61 cone spaces (mobile space).
Specific embodiment
Hereinafter, explaining the embodiment of lining type butterfly valve of the invention in detail based on attached drawing.In Fig. 1, Fig. 2, table
The embodiment for showing butterfly valve of the invention indicates the main enlarged view of a portion of Fig. 2 in Fig. 3.
In Fig. 1, Fig. 2, butterfly valve (hereinafter referred to as valve body 10) is for example for chemical industry facility or food
In associated pipeline etc., valve body 11, valve disc 12, the valve rod being made of top valve rod 13a and lower part valve rod 13b with barrel shape
13, it is arranged with the bore of nominal diameter 100A.It can be described below, in valve body 10, equipped with the cylinder with valve seat lining 20
Shape lining portion 34, the beam barrel lining portion 33 in lining portion 32, the sealing position 18 of seal cartridge 23, the boss with lining portion 32
Face 37, valve seat lining 20 sealing surface 31 world sealing position 19.
Valve body 11 is configured to tubular by cast irons such as example ductile cast irons, has top valve body 11a, lower part valve body 11b, it
Can removably be fixed by bolt 14.On valve body 11, it is equipped with flow path mouth 15 and flange part 16, they are covered by valve seat lining 20
Lid.On top, the axis of the valve rod 13 of valve body 11a, lower part valve body 11b fills side, equipped with the axis dress portion 27 with axis dress hole 21, in axis
In dress portion 27, top valve rod 13a, lower part valve rod 13b are assembled respectively.In the assembly side of the valve disc 12 in axis dress portion 27, it is equipped with circle
Body 22, seal cartridge 23, O-ring 24, bearing 25, it is in connection and be equipped with the spring 44 that is made of coil spring.
Valve seat lining 20 is made of resin material, in the present embodiment, by PFA(tetrafluoroethylene-perfluoro alkoxy second
Alkenyl ether copolymer) etc. fluororesin be set as the wall thickness of such as 3mm or so, thus, it is possible to play higher corrosion resistance and heat-resisting
Property.In valve seat lining 20, the flow path portion 30 that can be moved in path direction, and then the flow path are formed in 15 side of flow path mouth
Portion 30 is extended from flange part 16, is equipped with sealing surface 31 in inner circumferential side, the axis from the sealing surface 31 in upper and lower axis dress hole 21
Being extended on core direction has the tubular lining portion 34 that can be tightly connected with the periphery in aftermentioned beam barrel lining portion 33.
In Fig. 3, Fig. 4, tubular lining portion 34 is made of canister portion, in the side one of the insertion valve rod 13 of valve seat lining 20
Ground is extended, and the inner circumferential in the tubular lining portion 34 forms heavy wall sealing 42 with ring-type.
The size that the periphery in beam barrel lining portion 33 pushes can be provided projectingly by heavy wall sealing 42.In heavy wall sealing
On 42, it is formed with the conical surface portion 43 of section chevron shape, the coning angle of the conical surface portion 43 is set as such as 8 °~15 ° of range.It is thick
Wall sealing 42 is in the state of on the periphery for being connected to beam barrel lining portion 33, when being inserted into valve rod 13 in beam barrel lining portion 33
Touched by the outside diameter crimping in the beam barrel lining portion 33, thus, it is possible to obtain the sealing state at sealing position 18.
In FIG. 1 to FIG. 3, valve disc 12 is formed seperatedly with valve rod 13, is rotatably freely located at valve body via the valve rod 13
In 11.It is equipped with metal core 35 in the central side of valve disc 12, which is for example formed as disk by material of stainless steel alloy
Shape, on the surface as liquid contact surface of metal core 35, with valve body 11 the case where is same, by the tree of the fluororesin such as PFA etc.
The lining portion 32 that rouge material is formed is covered with the wall thickness of such as 3mm.
Lining portion 32 includes boss face 37, will be formed in face around valve rod insertion hole 12a in the world side of valve disc 12
On boss portion 36 cover, valve rod insertion hole 12a be formed in valve disc 12 up and down；Beam barrel lining portion 33, by can be from
The boss face 37 constitutes the beam barrel portion for the sealing side that the periphery of valve rod 13 is extended with covering；Lining portion 32 is via formation
Through hole 35a on the appropriate location of metal core 35 is integrally covered on the outside at the table back side of metal core 35, thus prevents
Only from the disengaging of metal core 35.
It is formed with rectangular hole portion 38 in the world side of the valve rod insertion hole 12a of valve disc 12, is inserted into from the rectangular hole portion 38 embedding
The connecting side for closing top valve rod 13a, lower part valve rod 13b, via top valve rod 13a, lower part valve rod 13b, by lining portion 32
The valve disc 12 of covering rotatably axis mounted in being covered on the valve body 11 of valve seat lining 20.Like this by valve rod 13 and valve disc 12
It is set as seperated construction, thus assembling becomes easy.
It is equipped with cylindric bearing 25 in the peripheral side of the valve rod 13 in axis dress hole 21, in the bearing 25 and underlying valve
Between 20 in seat pad, metal cylindrical shape circle body 22 is clipped and be arranged by them.
Circle body 22 with can by stainless steel material by the periphery neighbouring position in the seal boss face 37 in the world of valve disc 12 from
The diameter setting that upper side pushes strongly, can be via the spring of 25 transmission figure 1 of bearing with the state that valve disc 12 can rotate
44 bounce and be arranged.
In Fig. 1, in the axis dress hole 21 of top valve body 11a, parts of bearings 70 is matched with the state for being kept 71 locking of circle
It sets, by the parts of bearings 70, spring 44 is supported with the state that can be rebounded downwards.On the other hand, in lower part valve body 11b
Axis dress hole 21 in, block component 72 be kept circle 71 locking state configure, be overlapped bearing on the block component 72
Component 73, via the parts of bearings 73, spring 44 is supported with the state that can be rebounded upwards.By these parts of bearings
70,73, block component 72, upper and lower spring 44,44 rebound to 12 direction of valve disc respectively.In parts of bearings 70 or block component 72
On interior periphery, dust-proof, waterproof O-ring 74,75 is assembled respectively.
The configuration of bearing 25, by the bearing 25, is sealing three times respectively between the spring 44 and circle body 22 in axis dress hole 21
Near (near O-ring 24) at top valve rod 13a, lower part valve rod 13b are rotated freely and with aligning state support.Bearing
25 are set as assembling the resin multi-layer bearing with backing metal in the inner circumferential of the metal bearing insert 25a such as stainless steel
Two layers of construction of 25b.
Bearing insert 25a is set as the outer diameter that spring 44 abuts and applies its bounce, when applying bounce, end surface side
It is abutted with circle body 22, circle body 22 can be pushed to 12 side of valve disc and be arranged.In the case, the valve disc 12 of bearing insert 25a
Side end face can also also contact on the end face of seal cartridge 23, but not need to apply from bearing insert 25a to seal cartridge 23
Add pushing force.
In the present embodiment, it is equipped with slightly between the lower surface of bearing insert 25a and the upper surface of seal cartridge 23
Gap (not shown), be configured to, seal cartridge 23 is not pushed by bearing 25.Alternatively, it is also possible to be not via bearing 25 and by
The construction that spring 44 directly pushes circle body 22.
Seal cartridge 23 is made of flange shape component, by the PTFE(polytetrafluoroethylene (PTFE) of carbon fiber-containing) etc. resin materials at
Shape is arranged between the circle body 22 and lining portion 32 and valve seat lining 20 in axis dress hole 21 as sealing position.In Fig. 3, close
Envelope bushing 23 on be formed with cylindrical portion 23a, be formed with flange department 23b in the lower side of cylindrical portion 23a, flange department 23b with
The mode bent to peripheral direction is made of cyclic annular flange department.The end face 22a of circle body 22 is connected on flange department 23b, is enclosed as a result,
Body 22 is via flange department 23b urging valve seat lining 20.
According to the construction, even if because of the harsh use etc. of valve, just in case world sealing position 19 or sealing position 18
Leakproofness declines and fluid penetrates between valve seat lining 20 and seal cartridge 23, the flange department of the seal cartridge 23 of resin
23b is also pressed against on the valve seat lining 20 of resin by circle body 22 strongly, thus the pushing position prevent it is referred to as so-called
The leakage of back side leakage.Thus, metal circle body 22 will not touch corrosive fluid, increase the bounce of spring 44, warp
By 22 urging valve seat lining 20 of circle body, world sealing can be restored.
Here, as shown in figure 5, on the bottom surface of flange department 23b, the inclined conical surface is declined towards outer diameter with angle, θ setting
26, as a result, when assembling the seal cartridge 23 of Fig. 3 on valve seat lining 20, it is also possible that the flange department bottom surface in Fig. 5
Outer diameter near sites are connected on valve seat lining 20.
In addition, though it is not illustrated, following such structure also can be used in the case where fluid is not corrosive situation
It makes: forming the cyclic annular flange department of circle body 22 in a manner of the inside circumferential direction bending of the lower side of circle body 22, valve seat lining 20 is used
Circle body 22 directly pushes.In the case, seal cartridge 23 no longer needs flange department 23b, as long as cylindrical portion 23a configuration is in circle body
The top of 22 cyclic annular flange department.
Seal cartridge 23 is assembled in the mode that cylindrical portion 23a is clipped between tubular lining portion 34 and circle body 22, by circle body
22 prevent the expanding of tubular lining portion 34 via cylindrical portion 23a.
By such structure, in valve body 10 shown in Fig. 1, make the spring 44 being located in the axis dress portion 27 of valve body 11
The valve seat lining 20 being located in the boss face 37 in the world of valve disc 12 is pushed via circle body 22 with bounce, thus keeps being used as one
The leakproofness of the world sealing position 19 of secondary sealing.
Also, by with valve rod 13 tubular lining portion 34, beam barrel lining portion 33, seal cartridge 23 sealing position 18
It is clipped between circle body 22 and valve rod 13, thus prevents the expanding of the sealing position 18, the axis as these sliding contact positions
Sealing position 18 is functioned as secondary seal.
In turn, in Fig. 3, it is equipped with maintaining part 23c by the position on top in the cylindrical portion 23a than seal cartridge 23, at this
O-ring 24 is inserted in maintaining part 23c.As a result, than sealing position 18(secondary seal) position against the top is equipped with O shape
Circle 24, the O-ring 24 and 33 sliding contact of beam barrel lining portion, by these beam barrel lining portions top 33(valve rod 13a, lower part valve rod
13b) functioned with 24 bring sliding contact position of O-ring as sealing three times.Maintaining part 23c be set as can with tubular
The height of gap X is formed between lining portion 34.
In fig. 3 it is shown that near the upper side of the valve disc 12 of valve body 10, but the lower side of valve disc 12 be also set as with
Upper side similarly constructs.
In addition, in the above-described embodiment, circle body 22 is arranged with stainless steel, but the metal material other than it can also be used
Setting, as long as alternatively, when with bearing 25 push when 22 side of circle body (near the periphery of valve disc 12) can be pushed strongly, can also
To use the material other than metal material.
In addition, using coil spring as spring 44, but it is not limited to this, such as valve disc spring also can be used as bullet
Spring.
Then, illustrate the sequence of valve body.When assembling valve body 1, it is set as similarly assembling upper and lower sides.
In Fig. 1, Fig. 2, firstly, the valve disc 12 covered by lining portion 32 to be encased in the inside of valve seat lining 20.At this point,
By the upper and lower beam barrel lining portion 33 of valve disc 12 respectively in be inserted into the tubular lining portion 34 of valve seat lining 20.
Then, the seal cartridge 23 that O-ring 24 is assembled on maintaining part 23c is assembled to the periphery in tubular lining portion 34
On.At this point, flange department 23b to be embedded into the peripheral side in tubular lining portion 34, so that the O-ring 24 and axis of upper side in Fig. 3
The mode that 33 periphery of cylinder lining portion abuts is packed into.
On the periphery of seal cartridge 23, circle body 22 is assembled while being connected to bottom surface on the upper surface flange department 23b.
Made of metal circle body 22 keeps the cylindrical portion 23a of seal cartridge 23 and maintaining part 23c from peripheral side as a result, prevents tubular lining
The heavy wall sealing 42 in portion 34 it is expanding.
Top valve rod 13a, lower part valve rod 13b are inserted respectively into inside and and the valve in beam barrel lining portion 33 in this case
Bar is inserted into hole 12a connection.Radially apply set pushing force on heavy wall sealing 42 as a result, secondary seal and close three times
Envelope can function.
On the other hand, in each axis dress hole 21 of top valve body 11a, lower part valve body 11b, by bearing 25, spring 44, bearing
Component 70,73, block component 72 are respectively assembled to corresponding position, by parts of bearings 70, block component 72 respectively by holding
It encloses 71 locking and prevents from loosening.
Finally, valve disc 12, seal cartridge 23, circle body 22 are assembled in configuration between top valve body 11a, lower part valve body 11b
Aforementioned valve seat lining 20, integrated and tightening bolt 14 in the state of being sandwiched, the group of valve body 10 installs
At.
In the case where being applied with fluid pressure from primary side when fully closed on valve body 10 in Fig. 6 after assembling, at this
Fluid pressure valve disc 12 and valve rod 13 moved slightly to secondary side, such as when be applied with 1.0MPa fluid press when, valve disc 12 to
Secondary side moves about 0.2mm.In valve body 10, as shown in figure 3, in the edge part position of 30 side of flow path portion of flange part 16
Place, equipped with such valve disc 12 it is mobile when valve seat lining 20 can follow mobile mobile space 40.
By the flow path of the valve seat lining 20 for the movement to secondary side for following valve disc 12 from 40 bring of mobile space
The movement in portion 30 maintains the axis of the world of boss face 37 and sealing surface 31 sealing and beam barrel lining portion 33 and tubular lining portion 34
The leakproofness of leakproofness.
Mobile space 40 is by the cone that forms the edge part of the flow path mouth 15 of valve body 11 in the end face lateral incision of valve body 11
Face setting, flow path portion 30 can deform in the range of mobile space 40.Therefore, the conical surface 40 is set as following such set angle
Degree: flow path portion 30 can follow valve disc 12 and maintain world sealing and sealing to secondary side movement, the lateral movement in Fig. 3
Maximum moving distance having a size of valve disc 12.In the present embodiment, being set as can be between valve body 11 and valve seat lining 20 really
Protect the angle of following such mobile space 40: as described above, by the fluid pressure of 1.0MPa, valve disc is with maximum width
0.2mm is horizontally moved.In the case where the lateral movement of flow path portion 30 is oversized, it is possible to which the flow path portion 30 is excessive
Influence that is mobile and carrying out reverse side to the band of the valve flank of valve disc 12, so it should be noted that.
Set the amount of movement of flow path portion 30 further, it is possible to adjusting the angle of the conical surface 40, by by amount of movement with very little
Amount fine tuning, the amount of movement of flow path portion 30 can be set according to the valve body 10 that different bores and fluid pressure act on, is maintained
World leakproofness and sealing.
The conical surface 40 is formed along the flow path mouth 15 of valve body 11, and outer diameter is set as same with the internal diameter of washer 41 shown in Fig. 3
Deng hereinafter, the washer 41 configuration with the interconnecting piece for the outside pipe arrangement (not shown) being connected on valve body 10 at.It is flowing as a result,
The conical surface 40 does not close on the sealing surface 41a of washer 41 on the direction of road, even if being applied with fluid pressure on the sealing surface 41a of washer 41
In the case of, the flange portion of valve seat lining 20 will not be affected and deform, so be able to maintain that by 41 bring of washer with
The leakproofness of outside pipe arrangement.
In the case, right side is set in Fig. 2 as upstream side, if left side is downstream side, but such left side shown in the figure
In the case where the valve body 1 of right symmetric construction, left side can also be set as upstream side, if right side is downstream side.
Aforementioned mobile space 40 can also be formed on valve seat lining 20 it is not absolutely required to be formed on valve body 11.This
Sample, mobile space 40 can also be located in one party of valve seat lining 20 or valve body 11 or both, and then all at which kind of
The various shape that mobile space 40 can be set as other than the conical surface.
Then, illustrate the effect of the above embodiment of lining type butterfly valve of the invention.
In Fig. 3, in valve body (nominal diameter 100A) 10 when fully closed, with the bounce of spring 44 via circle body 22
The valve seat lining 20 being located in the boss face 37 in the world of valve disc 12 is pushed, thus, it is possible to keep by with boss face 37 and sealing
World leakproofness of 19 bring of world sealing position in face 31 as once sealing, even in valve seat lining 20 or lining portion
The case where deterioration has occurred in 32 also can restore leakproofness with the bounce of spring 44.
In the case, the elastic force of spring 44 as pushing force via world sealed sides from circle body 22 to valve disc 12 it is convex
It transmits the peripheral side of table top 37.Therefore, it is able to suppress the rising of operation torque, and makes boss face 37 and sealing surface 31 intensively
Contiguity, thus, it is possible to obtain the leakproofness of set world sealing.
Sealing position 18 is clamped between circle body 22 and valve rod 13 and prevents the expanding of the sealing position 18, thus
It can also ensure in the case where not bringing adverse effect to world leakproofness as secondary seal by 33 He of beam barrel lining portion
The 34 bring sealing of tubular lining portion.Thereby, it is possible in the leakproofness for not making either world leakproofness, sealing
In the case where decline, improve the leakproofness of the two, additionally it is possible to inhibit the increase of part number of packages.
The sealing surface 31 of valve seat lining 20 and tubular lining portion 34, the boss 37 in lining portion 32 and beam barrel lining portion 33 are distinguished
It is integrally formed by resin, so the corrosive fluid relative to chlorine etc. maintains good corrosion resistance.
If further illustrating the leakproofness of each sealing position, in world sealing position 19, existed with same heart shaped configuration
Circle body 22 on the periphery of top valve rod 13a and lower part valve rod 13b is tieed up by the bounce urging valve seat lining 20 of spring 44
Hold leakproofness.At this point, the periphery neighbouring position by world sealing position 19 in the boss face 37 in the world of valve disc 12 pushes away strongly
Pressure can reduce the resistance to sliding of valve disc 12 Yu valve seat lining 20 thus compared with the whole situation in urges boss face 37, and
Once sealing is maintained, the rising of the opening and closing operations torque of valve is prevented.
Also, seal cartridge 23 is set at sealing position 18, pushes valve via the flange department 23b of the seal cartridge 23
20 in seat pad, the thus not direct urging valve seat lining 20 of the end face 22a of circle body 22, but the seal cartridge 23 of resin pushes valve
20 in seat pad, the pushing force from circle body 22 is transmitted in a manner of dispersing via flange department 23b to 20 side of valve seat lining, is prevented
Stress is concentrated.Therefore, compared with the case where made of metal circle body 22 directly pushes, the change of the locality of valve seat lining 20 can be prevented
Shape.
In turn, flange department 23b and valve seat lining are pushed strongly by circle body 22, thus these abutting portion are also used as close
Envelope position functions, which functions as preventing the position of leakage above-mentioned leaked referred to as back side.
Here, as shown in figure 5, on the bottom surface of flange department 23b by decline it is inclined in a manner of the conical surface 26 of angle, θ is set,
It will be more concentrated near the periphery of valve disc 12 in the outside diameter of the conical surface 26 and pushed strongly with ring-type, thus, it is possible to further mention
High world leakproofness.
On the other hand, in sealing position 18, tubular lining portion 34 and 33 sliding contact of beam barrel lining portion, tubular at this time
The heavy wall sealing 42 of the inner circumferential in lining portion 34 functions and on the periphery for being pushed in beam barrel lining portion 33.As a result,
Higher leakproofness can be locally obtained, the leakage between tubular lining portion 34 and beam barrel lining portion 33 is prevented.Heavy wall is close
Envelope portion 42 is integrally formed the resin in tubular lining portion 34, so these secondary seals become the mutual sliding of resin and connect
Touching.Therefore, if using the lesser resin material of the coefficient of frictions such as fluororesin as these materials, and by the cylinder of resin
The case where shape lining portion 34 is directly pushed to made of metal valve rod 13 is compared, and significantly can reduce frictional resistance and prevent opening for valve
The rising of closed operation torque.
The conical surface portion 43 of section chevron shape is formed on heavy wall sealing 42, thus the conical surface portion 43 and tubular lining portion
34 boundary part is easy to disperse along with the stress of the pushing with beam barrel lining portion 33 with the extension of foot of the hill shape.Inhibit as a result,
The deformation of the locality of heavy wall sealing 42, and also reduce creep and prevent the reduction of leakproofness.When by valve rod 13 to
When valve disc 12 assembles, valve rod 13 can be made swimmingly to cross relative to heavy wall sealing 42 and be inserted into valve disc 12.In valve seat
When the manufacture of lining 20, heavy wall sealing 42 is prominent to the interior side in tubular lining portion 34, but not because of the section mountain of conical surface portion 43
Shape and become finishing die the obstacle removed.
The expanding of heavy wall sealing 42 is prevented in order to as described above sandwich sealing position 18, with circle body 22 and is maintained
The leakproofness of secondary seal as in the present embodiment configures circle body 22 in the opposed locations with heavy wall sealing 42.
In the present embodiment, in Fig. 4, the height of the valve disc side end 42a of heavy wall sealing 42 is set as the end face with circle body 22
The height of 22a is substantially uniform.
It is clipped in cylindrical portion 23a between tubular lining portion 34 and circle body 22, prevents cylinder via cylindrical portion 23a by circle body 22
Shape lining portion 34 it is expanding, thus heavy wall sealing 42 is effectively pushed to beam barrel lining portion 33, so also utilize resin system
Cylindrical portion 23a elastic force, thus sealing further increases.
In sealed sides three times, serve as a contrast interior 24 sliding contact of O-ring being inserted in the cylindrical portion 23a of seal cartridge 23 in valve seat
In 20 tubular lining portion 34 on, thus it enables that O-ring 24 with set pushing force sliding contact top valve rod 13a, under
Ensure leakproofness on each periphery of portion valve rod 13b, the leakage three times from 13 periphery of valve rod can be prevented.In turn, by that will protect
It holds in portion 23c in circle body 22, circle body 22 also is used to preventing maintaining part 23c's is expanding, can be realized the sharing of part,
And further increase sealing.
Also, by the sealing function three times around the valve rod of the O-ring 24 13, though because fluid pressure due to valve disc 12 to
In the case that secondary side is mobile, the leakage three times on valve rod periphery can be also prevented, component sharing is made by seal cartridge 23, simultaneously
It prevents stress from concentrating and plays sealing function three times.
In Fig. 3, the valve body (nominal diameter 100A) 10 when relative to fully closed is applied from primary side (right side in figure)
In the case where the fluid pressure for having added 1.0MPa, valve disc 12 and valve rod 13 are to secondary side (left side in figure) about 0.2mm mobile slightly.
Here, its sealing surface 31 of valve seat lining 20 is constituted with the boss face 37 that the boss portion 36 of valve disc 12 covers is sealed
World sealing, and the tubular lining portion 34 of valve seat lining 20 and the sealing of beam barrel lining portion 33 that covers the periphery of valve rod 13 and
Sealing is constituted, so in the flow path portion 30 of valve seat lining 20, movement with valve disc 12 and from valve rod 13 to secondary side applies
Sealing surface 31 and tubular lining portion 34 are together to the power of secondary side movement.
At this point, being equipped at the edge part position of 30 side of flow path portion of flange part 16 in advance on valve body 11 has 0.2mm
Width mobile space 40, so the flow path portion 30 of valve seat lining 20 is as shown in fig. 6, can be in the range of mobile space 40
(maximum width 0.2mm) deformation, can follow the movement to secondary side of valve disc 12 and valve rod 13 and move to secondary side
0.2mm。
Therefore, it is able to maintain that the respective leakproofness of world sealing and sealing, the world sealing is by 37 He of boss face
Sealing surface 31 is brought, and the sealing is by the tubular lining portion 34 that is formed on the orthogonal direction of the flow path portion 30 of valve seat lining 20
It is brought with beam barrel lining portion 33.Thereby, it is possible to prevent the primary leakage of world sealed sides and the secondary leakage of sealing side.
Also, by the conical surface 40 for forming the edge part of the flow path mouth 15 of valve body 11 in the end face lateral incision of valve body 11
Mobile space is set, thus, it is possible to make the flow path portion 30 of valve seat lining 20 mobile while preventing stress from concentrating, so can
20 consumption in check valve seat pad.
In turn, O-ring 24 is assembled in the inner circumferential of the cylindrical portion 23a of seal cartridge 23, thus, it is possible to prevent seal cartridge
Leakage three times between 23 and beam barrel lining portion 33.
Then, the 2nd embodiment of lining type butterfly valve of the invention is indicated in Fig. 7.In addition, preferably with
Afterwards, part identical with aforementioned embodiments is presented with like reference characters, and the description thereof will be omitted.
In valve body 50 preferably, the edge part of the flow path mouth 15 of valve body 11 is by the shape with stage portion shape notch
At circle-shaped stage portion face 51, mobile mobile space can be followed by the stage portion face 51 setting valve seat lining 20.
In the case, the flange part 16 of 11 side of valve body can be formed stage portion face 51 with set depth notch,
So the stage portion face 51 can be formed in the case where not needing higher precision with simple processing.At this point, pass through by
Stage portion face 51 forms as shallow as possible, additionally it is possible to avoid the stress collection of the valve seat lining 20 of the near border in the stage portion face 51
In.
The 3rd embodiment of lining type butterfly valve of the invention is indicated in fig. 8.Valve body 60 preferably
In, the cone space of cone cell is formed in a manner of notch at the flow path portion 30 of valve seat lining 20 and the coupling part of flange end
61, which becomes mobile space.
It in the case, can be primary when 20 side of valve seat lining is in forming in the case where not implementing to process to valve body 11
Cone space 61 is formed, it is further preferred that forming cone space 61 in the mode for being closely contacted on valve seat lining 20 on valve body 11, thus also
It is able to suppress the influence of the resistance to permeability relative to fluid.
Claims (13)
1. a kind of lining type butterfly valve is the butterfly valve for being equipped with valve disc freely via valve rod opening and closing in tubular valve body, institute
It states tubular valve body to be covered by valve seat lining, the valve disc is covered by lining portion, which is characterized in that
Prevented and the sealing position of aforementioned stem is clamped between circle body and valve rod the sealing position it is expanding,
And it is located at aforementioned valve disc by being pushed with the bounce for the spring being located in the axis dress portion of aforementioned valve body via aforementioned circle body
Valve seat lining in the boss face in the world and in the state of keeping the leakproofness of the world sealing position, in tubular lining portion
It is formed with the cyclic annular heavy wall sealing for being provided projectingly shape week, aforementioned heavy wall sealing is on the periphery for being connected to beam barrel lining portion
It is crimped and touches by the outside diameter in the beam barrel lining portion under state, aforementioned heavy wall sealing is pressed against into aforementioned beam barrel as a result, and is served as a contrast
On the periphery of inner part, tubular lining portion is extended on aforementioned valve seat lining, and beam barrel lining portion is extended on
In the lining portion of valve disc.
2. lining type butterfly valve as described in claim 1, which is characterized in that
Aforementioned world sealing position strongly pushes the periphery neighbouring position in the seal boss face in the world of aforementioned valve disc.
3. lining type butterfly valve as claimed in claim 1 or 2, which is characterized in that
Aforementioned circle body pushes aforementioned valve seat lining via the cyclic annular flange department for the seal cartridge for being located at aforementioned axis sealing position.
4. lining type butterfly valve as claimed in claim 3, which is characterized in that
On the bottom surface of aforementioned cyclic flange department, it is equipped with towards outer diameter and declines the inclined conical surface.
5. lining type butterfly valve as claimed in claim 1 or 2, which is characterized in that
On aforementioned heavy wall sealing, it is formed with the conical surface portion of section chevron shape.
6. lining type butterfly valve as claimed in claim 3, which is characterized in that
It is clipped in the cylindrical portion being formed on aforementioned seal bushing between aforementioned tubular lining portion and aforementioned circle body, by aforementioned circle body
The expanding of aforementioned tubular lining portion is prevented via aforementioned cylindrical portion.
7. lining type butterfly valve as claimed in claim 3, which is characterized in that
The O-ring sliding contact in the cylindrical portion of aforementioned seal bushing is inserted in the tubular lining portion of aforementioned valve seat lining in making
On.
8. lining type butterfly valve as described in claim 1, which is characterized in that
Aforementioned stem and aforementioned valve disc are formed seperatedly.
9. lining type butterfly valve as described in claim 1, which is characterized in that
The flow path mouth of the aforementioned valve body of short tubular and the aforementioned valve seat lining of flange part are covered, the flow path portion in said flange portion
At the edge part position of side, equipped with ought fluid when fully closed depress aforementioned valve disc and aforementioned stem and moved slightly to secondary side
When, aforementioned valve seat lining can follow mobile mobile space.
10. lining type butterfly valve as claimed in claim 9, which is characterized in that
Aforementioned lining portion has the boss face of the upper and lower boss portion covering of aforementioned valve disc and is covered on from the boss face aforementioned
Beam barrel lining portion on the periphery of valve rod, and aforementioned valve seat lining up and down be extended have from aforementioned flange part in aforementioned flow path
It is extended in portion and is sealedly attached to aforementioned beam barrel lining with the sealing surface of aforementioned boss face sealed connection and from the sealing surface
The tubular lining portion of the periphery in portion, and brought to the movement of secondary side by aforementioned mobile space by aforementioned valve disc is followed
Valve seat lining flow path portion movement, maintain the world of aforementioned boss face and sealing surface seal and aforementioned beam barrel lining portion with
The leakproofness of the sealing in tubular lining portion.
11. the lining type butterfly valve as described in right wants 9 or 10, which is characterized in that
Aforementioned mobile space is the conical surface for forming the edge part of the flow path mouth of valve body in the end face lateral incision of valve body.
12. the lining type butterfly valve as described in right wants 9 or 10, which is characterized in that
Aforementioned mobile space is the stage portion face for forming the edge part of the flow path mouth of valve body with stage portion shape notch.
13. the lining type butterfly valve as described in right wants 9 or 10, which is characterized in that
Aforementioned mobile space is the cone sky for being located at the cone cell at the flow path portion of aforementioned valve seat lining and the coupling part of flange end
Between.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015012881 | 2015-01-27 | ||
| JP2015-012881 | 2015-01-27 | ||
| JP2015-030539 | 2015-02-19 | ||
| JP2015030539 | 2015-02-19 | ||
| PCT/JP2016/052061 WO2016121709A1 (en) | 2015-01-27 | 2016-01-26 | Lined butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107208810A CN107208810A (en) | 2017-09-26 |
| CN107208810B true CN107208810B (en) | 2019-06-25 |
Family
ID=56543322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680007568.3A Active CN107208810B (en) | 2015-01-27 | 2016-01-26 | Lining type butterfly valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6738741B2 (en) |
| CN (1) | CN107208810B (en) |
| WO (1) | WO2016121709A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11428326B2 (en) * | 2018-12-28 | 2022-08-30 | Kitz Corporation | Centric butterfly valve |
| CN115419717A (en) * | 2022-08-26 | 2022-12-02 | 湖北洪城通用机械有限公司 | Horizontal split type water inlet butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759530A (en) * | 1984-11-14 | 1988-07-26 | Neotecha Ag | Stem and disc seal construction for butterfly valves |
| CN2118212U (en) * | 1992-02-02 | 1992-10-07 | 温州市向阳化工设备厂 | Butterfly valve with fluoroplastics lining |
| JPH09296867A (en) * | 1996-04-30 | 1997-11-18 | Tomoe Gijutsu Kenkyusho:Kk | Shaft seal unit for butterfly |
| CN202901322U (en) * | 2012-11-14 | 2013-04-24 | 宣达实业集团浙江东信特氟隆阀门有限公司 | Lining plastic butterfly valve |
| CN104235394A (en) * | 2013-06-24 | 2014-12-24 | 氟络塞尔特种阀门(苏州)有限公司 | Butterfly valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778028A (en) * | 1972-08-02 | 1973-12-11 | Dore Co John L | Lined butterfly valve |
| JPS61119881A (en) * | 1984-11-14 | 1986-06-07 | Kiyaroru Internatl Kk | Stem and disc seal for butterfly type valve |
-
2016
- 2016-01-26 WO PCT/JP2016/052061 patent/WO2016121709A1/en active Application Filing
- 2016-01-26 CN CN201680007568.3A patent/CN107208810B/en active Active
- 2016-01-26 JP JP2016572028A patent/JP6738741B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759530A (en) * | 1984-11-14 | 1988-07-26 | Neotecha Ag | Stem and disc seal construction for butterfly valves |
| CN2118212U (en) * | 1992-02-02 | 1992-10-07 | 温州市向阳化工设备厂 | Butterfly valve with fluoroplastics lining |
| JPH09296867A (en) * | 1996-04-30 | 1997-11-18 | Tomoe Gijutsu Kenkyusho:Kk | Shaft seal unit for butterfly |
| CN202901322U (en) * | 2012-11-14 | 2013-04-24 | 宣达实业集团浙江东信特氟隆阀门有限公司 | Lining plastic butterfly valve |
| CN104235394A (en) * | 2013-06-24 | 2014-12-24 | 氟络塞尔特种阀门(苏州)有限公司 | Butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6738741B2 (en) | 2020-08-12 |
| JPWO2016121709A1 (en) | 2017-11-09 |
| CN107208810A (en) | 2017-09-26 |
| WO2016121709A1 (en) | 2016-08-04 |
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