CN208627426U - Roll shaft neck protector crushes roller unit and pulverizer - Google Patents
Roll shaft neck protector crushes roller unit and pulverizer Download PDFInfo
- Publication number
- CN208627426U CN208627426U CN201690001477.4U CN201690001477U CN208627426U CN 208627426 U CN208627426 U CN 208627426U CN 201690001477 U CN201690001477 U CN 201690001477U CN 208627426 U CN208627426 U CN 208627426U
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- Prior art keywords
- protector
- roll shaft
- shaft neck
- roller
- conveying gas
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The utility model provides roll shaft neck protector, crushes roller unit and pulverizer.Protector equipment is on crushing roller unit (20), crush roller unit (20) are with axle journal head (23) of the configuration on the peripheral wall (11b) of the shell (11) of pulverizer and the pulverization roller (21) with the roller main body portion (21c) for crushing solid content in the upper surface for crushing platform (13), in conveying gas blow-off outlet (32) of the lower section of shaft-like portion (21b) configured with blowout conveying gas upward, the protector protects roll shaft neck (20J), the protector has the mounting panel members (41) and protector (42) being mounted on axle journal head (23), the protector (42) is formed to surround half frustum shape of the lower portion of shaft-like portion (21b), base end part (42a) is fixed on mounting panel members (41), it is described anti- Guard (42) covering protects it from will receive the collision of powder body from the part that the conveying gas of conveying gas blow-off outlet (32) is contacted.
Description
Technical field
The utility model relates to protect in the solid content crushed headed by the carbonic solid fuels such as coal and be micronized
Pulverizer in equip the roll shaft neck protector of roll shaft neck, the crushing roller unit with the roll shaft neck protector and there is the powder
The pulverizer of broken roller unit.
Background technique
In the past, there is known to use pulverizer (grinding machine) that the carbonic solid fuels such as coal are ground into obtained from micro mist shape
The pulverized coalapparatus such as thermal power generation boiler of the fine coal as fuel.The pulverizer is by pulverization roller and crushes platform pressing from coal supply
Thus the raw coal that machine is sent is crushed (manufacture fine coal), utilizes the fine coal blown out from the gap for crushing platform and shell (shell)
The flowing of the conveying gas (air or not active gases) of conveying, is transported to boiler via fuel supplying tubing out of pulverizer
Side (referring to patent document 1,2).
In the inside of this pulverizer, the powder bodies such as fine coal with conveying gas (air or not active gases) flowing and
It is blown afloat.Describing in patent document 1 will not be from the hole portion of the perforative shell of pulverization roller (shell) with the powder body blown afloat
Escape to the technology for the purpose of outside.Closing pulverization roller will not be deposited in the fine coal blown afloat by describing in patent document 2
Axis maintaining part labyrinth between for the purpose of technology.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2002-224581 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2011-92849 bulletin
Utility model content
The utility model project to be solved
But shaft-like portion or the branch of a part of collision crashing roller of the powder body blown afloat with the flowing of conveying gas
A part of the rollers such as the roller supporting part of pulverization roller and axle journal (roll shaft neck) is held, therefore, the Wear Countermeasures at these positions become project.
In contrast, following countermeasure can be taken: at the position of the generation abrasion on base material surface, directly being pasted on base material
Multi-disc wear resistance steel plate inhibits to wear.However, in this case, being replaced to the multi-disc wear resistance steel plate of abrasion
When operation, wear resistance steel plate is re-pasted with manual working so that base material will not be damaged, therefore, workability is poor, arrives powder
The time is spent until the task again of broken machine, the working efficiency of pulverizer may be greatly reduced, in addition, when removing steel plate, it can
The a part on base material surface can be peeled off together and damage base material.
The utility model is conceived to this project and proposes, it is intended that provide following roll shaft neck protector,
It crushes the maintenance management method of roller unit and pulverizer and roll shaft neck protector: preventing powder body to the collision of roll shaft neck to press down
System abrasion generates, also, workability related with the maintenance of roll shaft neck management is excellent, additionally it is possible to reduce the possibility of damage base material
Property.
Means for solving the problems
(1) to achieve the goals above, the roll shaft neck protector equipment of the utility model is in crushing roller unit, the powder
Broken roller unit includes axle journal head, configures in the opening portion on the peripheral wall for the shell for being formed in pulverizer, by swinging axle with
The mode that can be swung is supported on the peripheral wall；And pulverization roller, it is mounted on via the roll shaft neck with shaft-like portion
On the roller supporting part of the axle journal head, have contacted with the upper surface of the crushing platform rotated in the shell and rotate together and
Solid content is ground into the roller main body portion of powder body, the crushing roller unit is configured with below the vertical direction in the shaft-like portion
The conveying gas blow-off outlet of blowout conveying gas, the roll shaft neck protector protect the roll shaft neck not will receive upward
The collision of the powder body conveyed together with the conveying gas, the roll shaft neck protector are characterized in that, comprising: installation
Panel member is mounted on the axle journal head；And protector, be formed as surrounding on the downside of the vertical direction in the shaft-like portion
Half partial frustum shape, base end part are fixed on the mounting panel members, and front end extends towards roller main body portion side
Setting, protector covering protect the part will not be by from the part that the conveying gas of the conveying gas blow-off outlet contacts
To the collision of the powder body.
(2) the vertical direction lower zone of half frustum shape preferably under the installation condition of the protector is formed
To be declined with the angle more than angle of repose of the powder body from horizontal plane from the base end part towards the front end and being tilted.
(3) the preferably protector is formed as half frustum shape and in conjunction with multiple plates.
(4) preferably in the side of the protector contacted with the conveying gas from the conveying gas blow-off outlet
The surface-mounted hard brick for having the collision for protecting the protector not will receive the powder body.
(5) the preferably mounting panel members are configured to block the opening below the vertical direction of the roller supporting part
The a part in portion protects at least part in the roll shaft neck and the swinging axle not will receive touching for the powder body
It hits.
(6) part of the preferably mounting panel members become above vertical direction in the mounted state has semicircle
The lower half portion peripheral shape of the concave edge portion of shape, the concave edge portion and the roller supporting part correspondingly forms and along the lower half portion
Periphery configuration, the base end part of the protector are fixed close to the concave edge portion, are located at the protection in the mounted state
The surface-mounted of side contacted below the vertical direction of part and with the conveying gas from the conveying gas blow-off outlet has guarantor
Protect the mounting panel members not and will receive the hard brick of the collision of the powder body.
(7) preferably the mounting panel members have in the mounted state outside the lower half portion of the roller supporting part
The side region and in the mounted state that each side in week extends below the width direction and vertical direction of the opening portion
The lower zone extended below the vertical direction of the lower half portion periphery of the roller supporting part, the hard brick are assemblied in
In at least part in the lower zone.
(8) it is preferably contacted in the mounting panel members with the conveying gas from the conveying gas blow-off outlet
The surface of side is that the back side of opposite side is formed with mounting base, the seat surface that is formed on the roller supporting part and the mounting base with
It can be installed in such a way that bolt is dismounted by fastening, protection institute is formed with around the bolt hole of the mounting base
State fastening bolt head not will receive the powder body collision protection wall portion.
(9) the crushing roller unit of the utility model includes axle journal head, configures the peripheral wall in the shell for being formed in pulverizer
On opening portion in, be supported on the peripheral wall in a swingable manner by swinging axle；And pulverization roller, via having
The roll shaft neck in shaft-like portion and be mounted on the roller supporting part of the axle journal head, have and the crushing platform that is rotated in the shell
Upper surface contact and rotate together and be ground into solid matter the roller main body portion of powder body, the crushing roller unit is described
Conveying gas blow-off outlet configured with blowout conveying gas upward below the vertical direction in shaft-like portion, the crushing roller unit
It is characterized in that, roll shaft neck protector described in any one of above-mentioned (1) to (8) is installed in the roll shaft neck.
(10) pulverizer of the utility model is characterized in that, the pulverizer includes crushing platform, with can around along
The mode of the axle center driving rotation of vertical direction is supported in shell；And crushing roller unit described in above-mentioned (9).
Utility model effect
According to the utility model, protector cover in the shaft-like portion of the roll shaft neck of pulverization roller conveying gas (air or
Not active gases) therefore the part of collision is able to suppress due to the flowing with conveying gas and the powder body that is blown from touches
The abrasion in shaft-like portion hit and generated.In addition, roll shaft neck protector is by mounting panel members by can be in a manner of detachable mounted
It is mounted on axle journal head, it is therefore, excellent with the related workability of maintenance management of axle journal head, it shortens and maintains management related
Caused by operation until the task again of pulverizer during, it is suppressed that the reduction of the working efficiency of pulverizer, additionally it is possible to
Reduce a possibility that base material is damaged in replacement operation.
In turn, the mounting panel members of roll shaft neck protector are configured to block below the vertical direction of roller supporting part
The baffle-like panel that the mode of a part of the opening portion of the peripheral wall of shell configures blocks roll shaft neck by baffle-like panel
Roller supporting part and swinging axle, thereby, it is possible to inhibiting the collision of powder body being blown from due to the flowing with conveying gas
The roller supporting part of generation and the abrasion of swinging axle.In addition, in mounting panel members (baffle-like panel), in powder body collision
The anti-abrasive materials such as wear-resistant steel plate are arranged in part in a detachable manner, improve, reduce for the endurance of abrasion as a result,
The frequency that related operation is managed with the maintenance of axle journal head can be easy to carry out replacement operation.In addition, can reduce due to making
Industry and a possibility that damage base material.
Detailed description of the invention
Fig. 1 is the powder for showing the crushing roller unit with belt roller axle journal protector of an embodiment of the utility model
The perspective view of a part of the internal structure of broken machine.
Fig. 2 is the powder for showing the crushing roller unit with belt roller axle journal protector of an embodiment of the utility model
The cross-sectional view of the major part structure of broken machine.
Fig. 3 A, Fig. 3 B are the crushing roller units for showing the belt roller axle journal protector of an embodiment of the utility model
The figure of side, Fig. 3 A are its entirety sectional views, and Fig. 3 B is its major part side view.
Fig. 4 is the crushing roller unit of the belt roller axle journal protector for an embodiment for showing the utility model from tiltedly just
The perspective view of the state of surface side observation.
Fig. 5 is the powder for showing the crushing roller unit for removing belt roller axle journal protector of an embodiment of the utility model
The perspective view of broken roller and the major part from oblique face side.
Fig. 6 A, Fig. 6 B are the crushing roller units for showing the belt roller axle journal protector of an embodiment of the utility model
The perspective view of state from lower rear side, Fig. 6 A are its overall perspective views, and Fig. 6 B is its major part perspective view (Fig. 6 A
The portion VIB enlarged drawing).
Fig. 7 is the baffle-like panel (mounting panel members) of the roll shaft neck protector of an embodiment of the utility model
Main view.
Specific embodiment
In the following, being illustrated referring to attached drawing to the embodiments of the present invention.
It should be noted that embodiment as shown below only illustrates, do not exclude using following implementation
In the meaning of various modifications and technology do not expressed.Each structure of following implementation can be in the model for the purport for not departing from them
Interior progress various modifications are enclosed to implement, further, it is possible to carry out choice selection as needed, or are able to carry out appropriately combined.
In addition, the utility model crushes roller unit and with the pulverizer for crushing roller unit with roll shaft neck protector
For crushing solid content raw material and being micronized, as representative components, there is the coal crushed as solid content raw material
The carbonic solid fuels such as charcoal and the coal pulverizer being micronized.As the solid content raw material to be crushed, in addition to this, also
It can be using biomass, the various solid contents such as remaining slag, that is, petroleum coke of crude oil.
It should be noted that " upper and lower " expression vertical direction (gravity direction) described below is upper and lower, in addition, " left and right "
Indicate the mutually opposite direction of the horizontal direction relative to some main body.
(structure of pulverizer)
Firstly, being illustrated referring to structure of the Fig. 2 to the pulverizer 10 of present embodiment.It is referred to as vertical as shown in Fig. 2
The pulverizer 10 of formula grinding machine has the vertical shell 11 in cylinder hollow shape, in the central axis of the top 11a of shell 11
The upper injection pipe 14 configured with solid contents raw material such as the injection coals to be crushed.On the pedestal 12 of the underface of injection pipe 14
Configured with the crushing platform 13 for crushing the solid content raw material injected from injection pipe 14.By driving device (not shown), platform is crushed
13 carry out rotation driving around the axle center of the vertical direction along the central axis.
In the upper surface for the vertical direction for crushing platform 13, it is concentrically formed with cricoid crushed face 13a with central axis,
Above the vertical direction of crushed face 13a, in the mode opposed with crushed face 13a in the circumferential with equally spaced configured with multiple
(such as 2 or 3) pulverization roller 21.Each pulverization roller 21 is supported on journal shaft (rotation shaft) 22 in a way freely spinning way
Front end, which is configured to from the peripheral wall 11b of shell 11 towards central axis side to vertical direction inclined downward.
Journal shaft 22 is supported on axle journal head 23, constitutes pulverization roller list by pulverization roller 21, journal shaft 22 and axle journal head 23
Member 20.On axle journal head 23, by left and right (side of tangential direction and another party) from shell 11 it is outstanding in a manner of be provided with
Crush the swinging axle (pivot pin) 24 extended in the tangential direction of the periphery of platform 13.Roller unit 20 is crushed via the pivot pin 24,
Week can be supported on close to the direction of crushed face 13a and in a manner of the side far from crushed face 13a is swung up in pulverization roller 21
On wall 11b.
As shown in Fig. 2, the protrusion 23a that oriented vertical direction lower side is provided projectingly is formed on axle journal head 23, in shell
Stop part 25 is equipped on the peripheral wall 11b of body 11.When the front end of stop part 25 is abutted with protrusion 23a, pulverization roller 21 is limited
Close to crushed face 13a.Stop part 25 carries out advance and retreat driving by actuator 26, is thus adjusted to its front position, thus
To being adjusted closest to position closest to crushed face 13a of pulverization roller 21.
In addition, equipped with the force application apparatus 27 applied to pulverization roller 21 for crushing the load of solid content.Force application apparatus 27
With the hydraulic cylinder 28 being fixed on peripheral wall 11b and pass through the plunger 29 driven in the axial direction of hydraulic cylinder 28.In axle journal head
23 top is extended with arm 23b, and the front end of plunger 29 is pressed on arm 23b, as a result, applies pulverization roller 21 to crushed face
The load of downward (towards crushed face 13a) that the solid content on 13a is crushed.
In the lower part of shell 11, the ingress port 15 for being sent into conveying gas is provided with positioned at the outer periphery for crushing platform 13.
In the present embodiment, the compressed air of a not shown pressure fan is sent into as conveying gas from the ingress port 15
In shell 11, become hyperbaric environment in shell 11.
On the top of shell 11, graded blade 16 is provided with to smashed positioned at the outer periphery of injection pipe 14
The rotary separator (grading plant) 17 that solid content (hereinafter referred to as powder body or crushed material) is classified.In addition, in shell
11 top 11a is provided with the outlet port 18 of the crushed material after discharge classification.
Crushed material is become by the smashed solid content of pulverization roller 21, to the pressure fan (not shown) connecting with ingress port 15
It is driven, conveys gas as a result, and be sent into shell 11 from ingress port 15, pass through the leaf by aftermentioned conveying gas blow-off outlet 32
The upward swirling flow for the conveying gas that piece 32a is generated, crushed material are dried and are risen.Pass through rotary separator 17, the rising
Crushed material be classified into less than the particle powder of specified particle size and greater than the coarse powder of specified particle size.At this point, in order to inhibit coarse powder from
Pulverizer is transported to other equipment, and coarse powder is classified and is distributed by rotary separator 17, again returns to and crushes platform 13
It is upper to be crushed again.Particle powder passes through rotary separator 17, is discharged with the flowing of conveying gas from outlet port 18,
Other equipment are transported to from pulverizer.
(structure for crushing roller unit and its periphery)
The outline structure for the crushing roller unit 20 itself equipped in this pulverizer 10 is roughly the same with existing structure.Under
Face, referring to Fig.1, Fig. 3 A is illustrated.
As shown in Fig. 1, Fig. 3 A, it is formed with opening portion 11c in the peripheral wall 11b of shell 11, axle journal head 23 is configured in the opening
In portion 11c, on the peripheral wall 11b for the edge that left and right pivot pin 24 outstanding is supported on opening portion 11c in a swingable manner.
It should be noted that assembling the radial direction of oriented peripheral wall 11b in a manner of not interfering with axle journal head 23 in the 11c of opening portion
Cover 30 outstanding, to divide the inside and outside of shell 11.
Pulverization roller 21 has roller shell 21a with shaft-like portion 21b and on roller shell 21a and can tear open
The roller main body portion 21c of dress.In addition, axle journal head 23 has roller supporting part 23c, protrusion 23a, the arm 23b of bearing pulverization roller 21
With pivot pin 24 from roller supporting part 23c downwards, top and left and right sides be provided projectingly, respectively with stop part 25, plunger 29,
Peripheral wall 11b is abutted and is supported on this.
In addition, the end (one end) of 30 side of cover in journal shaft 22 is in conjunction with the roller supporting part 23c of axle journal head 23.And
And the roller shell 21a of pulverization roller 21 be mounted in a way freely spinning way the central axis line side in journal shaft 22 end it is (another
End side).It should be noted that the axle center of journal shaft 22 is configured to from the peripheral wall 11b of shell 11 towards central axis side to lower section
Inclination, still, which is, for example, 15 degree~40 degree or so.
As shown in arrow A1 in Fig. 3 A, by the pressure fan being connect with ingress port 15 feeding shell 11 (not shown)
Conveying gas is from the conveying gas blow-off outlet 32 between the peripheral wall 11b that the periphery and shell 11 that crush platform 13 is arranged in towards lead
Histogram is blown upwards.The part of the conveying gas blow-off outlet 32 for the periphery for crushing platform 13 is provided with blade 32a, with crushing platform
13 rotate together, and apply rotary force to from the conveying gas for conveying gas blow-off outlet 32 towards air-supply above vertical direction,
It is formed in shell 11 towards the swirling flow above vertical direction.
The roller shell 21a and axle journal head 23 of pulverization roller 21 are configured in the position directly above of the conveying gas blow-off outlet 32
Roller supporting part 23c, in addition, pivot pin 24 also is located at this.Therefore, towards roller shell 21a, roller supporting part 23c, pivot pin 24
The downward face etc. of vertical direction blows the conveying gas blown upward on the downside of vertical direction.
In shell 11, crush platform 13 on by the smashed powder body of pulverization roller 21 with the flowing of the conveying gas and
It is blown afloat, the shaft-like portion 21b, roller supporting part 23c, the downward face of pivot pin 24 etc. of part of it towards roller shell 21a are blown
It send and is collided with it.When powder body collides the downward face etc. of these device parts, lead to the abrasion etc. of colliding part
Damage, therefore, as its countermeasure, in crushing roller unit 20, in roller supporting part 23c and pulverization roller 21 with axle journal head 23
The roll shaft neck 20J of shaft-like portion 21b be equipped with roll shaft neck protector 40.
(structure of roll shaft neck protector)
As shown in Figure 3B, roll shaft neck protector 40 has the roller bearing for being mounted on axle journal head 23 in a detachable manner
Baffle-like panel (mounting panel members) 41 and base end part 42a on portion 23c and protrusion 23a are fixed on the baffle-like face
The protector 42 of configuration installation is carried out on plate 41 and in a manner of the lower portion of the shaft-like portion 21b to surround roller shell 21a.It needs
It is noted that these baffle-like panels 41 and protector 42 are formed by steel (such as SS400, low-alloy steel etc.).
Baffle-like panel 41 is planar plate, and roller bearing is mounted in a manner of extending around roller supporting part 23c
On portion 23c, not only there is the function as the installation component being mounted on protector 42 on roller supporting part 23c etc., also have and protect
Protection roll supporting part 23c, protrusion 23a, pivot pin 24 not will receive the function of the collision of powder body.
Fig. 7 is the main view of baffle-like panel 41, and the upside of paper becomes in the mounted state above vertical direction, the gear
Plate-like panel 41 is in the up and down direction of paper and left and right directions in the tabular component of planar extension.As shown in fig. 7, baffle-like
Panel 41 is formed with concave edge portion 41a above it, and concave edge portion 41a is formed as and the substantially semi-circular cylindrical of roller supporting part 23c
The corresponding substantially semi-circular shape in the periphery of vertical direction lower half portion.Baffle-like panel 41 is from the concave edge portion 41a to horizontal direction
Two sides and lower section in (direction under the installation condition installed to axle journal head 23) are in planar extension.Positioned at concave edge portion 41a's
Rising wood 41b, 41b and two sides edge 41c, 41c of horizontal direction two sides are shaped generally as linearly, the lower section of concave edge portion 41a
Lower edge be formed as the bending being made of inclined side lower edge 41e, 41e of horizontal intermediate lower edge 41d and its two sides
Wire shaped.
As shown in Figure 4 to 7, this baffle-like panel 41 so that concave edge portion 41a along substantially the half of roller supporting part 23c
It is cylindric towards the lower half portion periphery on the downside of vertical direction and its plane from the periphery of roller supporting part 23c substantially
The mode extended in the range of certain distance is configured to orthogonal with the axial line of roller supporting part 23c (axial line of journal shaft 22)
Direction, be mounted on roller supporting part 23c.
As shown in Fig. 1, Fig. 3 (Fig. 3 A, Fig. 3 B)~Fig. 5, which is opened with the peripheral wall 11b for blocking shell 11
Horizontal direction (the installation shape installed to axle journal head 23 of the above-mentioned lower half portion of a part of oral area 11c, i.e. roller supporting part 23c
Direction under state) two sides region and above-mentioned lower half portion and these two sides region vertical direction below area
The mode in domain carries out configuration installation.As shown in fig. 7, the baffle-like panel 41 can be divided into the lower half from roller supporting part 23c
The exceptionally side region of all each side direction horizontal directions (width direction of opening portion 11c) and lower section extension is (mainly by upper limb
Portion 41b, side edge part 41c, side lower edge 41e surround trapezoid area) 41P1,41P1 and in the mounted state to roller support
The lower zone that the lower section of the lower half portion periphery of portion 3c extends (is mainly surrounded by concave edge portion 41a and centre lower edge 41d or more
Side region 41P1,41P1 between region) 41P2.
It is opposite in the collision frequency of the powder body on the surface (face for being blown from the side of conveying gas) of baffle-like panel 41
Higher region is equipped with the ceramic tile 43 of hard ceramic, is generated as inhibition baffle-like panel 41 due to the collision of powder body
The hard brick of abrasion.The ceramic tile 43 is with the relatively high region, that is, lower zone of the collision frequency of powder body (alternatively at " tool
Have the region part of the width of the underface positioned at the axle center of roller supporting part 23c ") one of surface is limited to based on 41P2
Point, it is assembled in the mode that the mutual gap of ceramic tile 43 is relatively narrow.Mutual gap by ceramic tile 44 and baffle-like panel 41 heat
Differential expansion and the easiness of construction determine that still, in order to protect baffle-like panel 41, preferred gap is narrow as far as possible.The ceramic tile 43
Assembly position set as needed, for example, it is also contemplated that according to conveying gas convolution direction make assemble position to
The displacement of convolution downstream side.In addition, if it is desired, can also be assemblied in whole face.About the material of ceramic tile 43, base material can be protected
I.e. baffle-like panel 41 not will receive the collision of powder body being blown from the air-flow of conveying gas, not limit especially
It is fixed, still, such as be able to use aluminium oxide, silica, zirconium oxide, magnesia, silicon carbide, silicon nitride etc. or they
Mixture.
As shown in Fig. 6 A, Fig. 6 B, the concave edge portion 41a of baffle-like panel 41 back side (as be blown from conveying gas
The back side of the opposite side in the surface of the side of body) it is formed with mounting base 46, the mounting base 46 is fixed with bolt 47 using fastening
On the seat surface 45 being formed on roller supporting part 23c.The mounting base 46 is formed as relative to concave edge portion 41a in roller supporting part 23c
The position of the left and right sides and prominent from back side at this 2 positions of upper and lower part, be formed with and be hidden in fastening bolt 47
The back side thus bolt hole (not shown).
Prominent be formed with protects the head of assembled fastening bolt 47 will not be by around the bolt hole of mounting base 46
To the protection ring (protection wall portion) 48 of the collision of powder body.Protection ring 48 is the week positioned at the head of assembled fastening bolt 47
The ring-type enclosed erects wall, the height more than height on the head with fastening bolt 47, so that the head of fastening bolt 47 will not be by
It damages to cause obstacle to replacement operation in abrasion.In turn, relative to the concave edge portion 41a of baffle-like panel 41 in two sides position
Each rising wood 41b set is respectively arranged with suspention dog hole 49, is able to carry out hanger bearing in replacement operation.
On the other hand, in the seat surface 45 set on roller supporting part 23c, correspond to mounting base 46 and at an upper portion thereof and at a lower portion thereof shape
At there is threaded hole (not shown).
Baffle-like panel 41 is suspended in midair using dog hole 49, and each mounting base 46 is configured in the specified position of corresponding seat surface 45,
Fastening bolt 47 is passed through in the bolt hole of mounting base 46 and screwed togather and is fastened in the threaded hole of seat surface 45, thus by baffle-like
Panel 41 is mounted on axle journal head 23.Under the installation condition, surrounded around the head of fastening bolt 47 by protection ring 48,
In addition, the lower half portion of the vertical direction of roller supporting part 23c is protected by baffle-like panel 41, protect it from will receive with conveying
The air-flow of gas and the influence of powder body for being blown from and being collided, to inhibit to wear.
As shown in Fig. 3 (Fig. 3 A, Fig. 3 B)~Fig. 7, protector 42 is under the vertical direction of the shaft-like portion 21b of pulverization roller 21
The mode that side section surrounds the semicircular cylinder region more in the inner part peripheral wall 11b than shell 11 is formed as half frustum shape.Such as Fig. 7 institute
Show, protector 42 configures in such a way that the base end part 42a of side is along concave edge portion 41a, and close to concave edge portion 41a and passes through welding
Etc. being fixed.What the front end 42b that protector 42 is formed as the other side in the mounted state extended towards roller main body portion 21c
Half frustum shape (half polygonal pyramid platform shape) surrounds the vertical direction lower portion of shaft-like portion 21b.In shaft-like portion 21b, with
The air-flow of conveying gas from conveying gas blow-off outlet 32, powder body are blowed to the vertical direction lower portion of shaft-like portion 21b
And collided, still, protector 42 covers the part of powder body collision, protects the part not and will receive touching for powder body
It hits.
In the present embodiment, protector 42 is by being formed as half frustum shape in conjunction with multiple flat plate panels.Moreover,
The surface (face of the side of the conveying gas contact from conveying gas blow-off outlet 32) of protector 42 is equipped with hard ceramic system
Ceramic tile 44, the hard brick as the collision that protects protector 42 not and will receive powder body.The ceramic tile 44 is with ceramic tile 44 mutual
The relatively narrow mode in gap is assemblied in the entire surface of protector 42.Mutual gap by ceramic tile 44 and protector 42 thermal expansion difference
It is determined with the easiness of construction, still, in order to protect protector 42, preferred gap is narrow as far as possible.The assembly position root of ceramic tile 44
It, can also be with partial assembled according to being set.The protector 42 of present embodiment by being formed in conjunction with multiple plates,
Therefore, it is capable of the ceramic tile 44 of easily assembling plate shape.
It should be noted that the assembly in ceramic tile 43,44 to the surface of base material, that is, baffle-like panel 41 and protector 42
In, such as apply and the general assembly methods such as deposition are carried out to the plug in the mounting hole for being entrenched in ceramic tile 43,44.
The shape of protector 42 is half frustum shape, with the periphery of the shaft-like portion 21b of pulverization roller 21 towards roller main body portion 21c
It is expanding matchingly, it is gently expanding from its base end part 42a towards front end 42b.Moreover, half under the installation condition of protector 42
Vertical direction lower zone (being here 1 plate plane faceplate part of lowest part) 42c of frustum shape is formed as, from base end part
42a towards front end 42b (towards the central part of shell 11) with the angle, θ more than angle of repose of powder body from horizontal direction under
Drop inclination.
Part other than the lower zone 42c of half frustum shape under the installation condition of protector 42 is with the lower zone
The angle of 42c or more declines inclination from base end part 42a towards front end 42b from horizontal direction, accordingly, with respect in protector 42
Surface (the upward face of the side opposite with surface), in the mounted state, any part all with the angle of repose of powder body more than
Angle tilt.
It should be noted that the angle of repose of powder body is determined by the surface state of powder body and protector 42, it is therefore preferable that
According to the powder body to be manufactured come set angle θ.More preferably setting covering is blown from micro- with the air-flow of conveying gas
There is surplus with the angle of repose of powder body compared in the range of the part of powder contact and configuration space in shell 11
Biggish angle, θ.For example, optimized angle θ is 40 degree~50 in the case where powder body is to carry out smashed fine coal to coal
The range of degree.
(effect and effect)
The roll shaft neck protector 40 of one embodiment of the utility model, the crushing with the roll shaft neck protector 40
Roller unit 20 and pulverizer 10 are constituted as described above, therefore, by baffle-like panel (mounting panel members) 41 can dismount
Mode be mounted on the protector 42 on axle journal head 23 covered in the shaft-like portion 21b of pulverization roller 21 with conveying gas air-flow
And the vertical direction lower half portion for the powder body contact being blown from, protect shaft-like portion 21b not will receive the collision of powder body.By
This, can prevent the abrasion of the shaft-like portion 21b of the pulverization roller 21 due to caused by the collision of powder body, it is able to extend and sets
The standby service life.
In addition, baffle-like panel 41 is to protect a part, the i.e. roller supporting part of the opening portion 11c of the peripheral wall 11b of shell 11
The vertical direction lower half portion of 23c and its region of two sides not will receive the micro mist being blown from the air-flow of conveying gas
The mode of the collision of body is mounted below the vertical direction of roller supporting part 23c, therefore, in addition to protector 42 is mounted on roller branch
Other than function on bearing portion 23c etc., also plays and roller supporting part 23c, protrusion 23a, pivot pin 24 is protected not to will receive with defeated
Supply gas body air-flow and the function of the collision of powder body that is blown from.Cause thereby, it is possible to prevent the collision due to powder body
The abrasion of roller supporting part 23c, protrusion 23a, pivot pin 24 be therefore able to extend the service life of equipment.
In addition, in the surface-mounted ceramic tile 43,44 for having hard of baffle-like panel 41 and protector 42, therefore, Neng Goubao
The surface of guard block plate-like panel 41 and protector 42 not will receive touching for the powder body being blown from the air-flow of conveying gas
It hits, the surface that can prevent or inhibit baffle-like panel 41 and protector 42 is blown from due to the air-flow with conveying gas
The collision of powder body and wear.
In the case where baffle-like panel 41, with the relatively high region, that is, lower zone 41P2 of the collision frequency of powder body
Based on and be limited to the mode of a part on surface to assemble ceramic tile 43, therefore, be able to suppress the material cost of ceramic tile 43.When
So, about protector 42, if it is possible to be limited to the relatively high region of collision frequency of powder body to assemble ceramic tile 44, then can
Access same effect.
In addition, the inner surface (upper surface) in protector 42 is attached with the powder body raised due to conveying gas, but
It is that any part of the inner surface of protector 42 is all with the angle tilt more than angle of repose of powder body, therefore, accompanying is micro-
Inner surface of the powder due to gravity and in protector 42 is slided and is fallen.Thereby, it is possible to prevent powder body to be trapped in protector 42
Inner surface.
In addition, roll shaft neck protector 40 is by will be formed in the back side of baffle-like panel 41 using fastening bolt 47
Mounting base 46 is fastened on the seat surface 45 of roller supporting part 23c and is fixed, therefore, can by the fastening dismounting of bolt 47
It is easy to carry out the replacement operation of roll shaft neck protector 40 (protector 42 and baffle-like panel 41).
In addition, prominent around the bolt hole of mounting base 46 be formed with protection ring 48, assembled fastening bolt is protected
47 head not will receive the collision for the powder body being blown from the air-flow of conveying gas, it is therefore prevented that or inhibiting tight
The head of fixing bolt 47 due to powder body collision and wear, will not make fastening bolt 47 head wear and be not available dismounting
Tool without obstacle removes fastening bolt 47 in the replacement operation of roll shaft neck protector 40.
It should be noted that it is preferred that carrying out the maintenance management of this roll shaft neck protector 40 by the following method.
That is, in general, inspecting periodically of implementing periodically to carry out of pulverizer 10 etc. checks, still, this inspect periodically opportunity or
Other casual inspection opportunitys confirm the state of roll shaft neck protector 40, determine whether in the consumption state (shape needed replacing
State judgment process).Here, be determined as roll shaft neck protector 40 state be in need replacing consumption state in the case where,
Or in the case where estimation behaviour in service from now on is determined as in the consumption state for being more suitble to replacement, roll shaft neck is protected
Shield device 40 is replaced with the qualified product (replacement process) prepared in advance.Certainly, if the state of roll shaft neck protector 40 is determined as
It does not need to replace before when next time checks, then can not also implement to replace.
Then, for the roll shaft neck guarantor for being judged to being in consumption state in state judgment process and being removed due to replacement
It protects device 40, such as the replacement replacement of implementation hard brick etc. and repairs regeneration treatment, produced as the qualification being able to use in replacement next time
Product (qualified product), being prepared for replacement in advance.If not can be carried out repairing regeneration treatment, prepare new product.Roll shaft neck is protected
The qualified product for protecting device 40 includes new product and the health product again after the repairing regeneration treatment.
In this way, checking that opportunity determines the consumption state of roll shaft neck protector 40 in pulverizer 10, replace if necessary
It being capable of digital preservation thereby, it is possible to efficiently, suitably and easily carry out the maintenance management of roll shaft neck protector 40 at qualified product
The roll shaft neck 20J of roller unit 20 is crushed, or even can ensure the performance of pulverizer 10 for a long time, is able to extend mechanical life.
It should be noted that if being configured to not determine consumption state and always protect roll shaft neck on opportunity of inspecting periodically
Device 40 is replaced with the roll shaft neck protector 40 prepared to replace, suitable for the roll shaft neck protector 40 removed due to replacement
When being handled again, taken care of for replacing, then can be handled in a short time, can further shorten due to
The work dwell time of pulverizer 10 caused by the maintenance management of roll shaft neck protector 40.
(other)
The embodiments of the present invention is explained above, still, the utility model being capable of model without departing from its main purpose
Enclose interior suitably changed to above embodiment to implement.
For example, in the above-described embodiment, using the ceramic tile 43,44 of hard ceramic as covering 41 and of baffle-like panel
The hard brick on the surface of protector 42, still, hard brick is without being limited thereto, as long as by having the wear-resistant material of necessary endurance
Expect the component constituted, then can apply.
It is, of course, preferable to which the base material of baffle-like panel 41 and protector 42 itself is also made of the higher material of endurance.
In this case, according to the endurance of the material of base material, it may not be necessary to hard brick.But as in the present embodiment, baffle
Shape panel 41 and protector 42 are formed by general steel, assemble hard brick at the necessary position on its surface, thereby, it is possible to by material
Material cost inhibits lower.
In the present embodiment, protector 42 is by being formed as half frustum shape, Neng Gourong in conjunction with multiple flat plate panels
It changes places the ceramic tile 44 of assembling plate shape, but it is also possible to the shape of the shaft-like portion 21b of roller shell 21a matchingly by protector
42 are formed as curved.In addition, protector 42 is formed as half frustum shape, still, as long as protection not will receive with conveying gas
The air-flow of body and the collision of powder body being blown from, can also be formed as semi-barrel shape shape.
In addition, in the above-described embodiment, protection wall portion is using the cyclic annular structure for erecting wall, that is, protection ring, still, protective bulkhead
Portion is located at around the head of assembled fastening bolt 47 and can protect the head of fastening bolt 47, is not limited to ring-type
Perpendicular wall.
Symbol description
10 pulverizers
11 shells
The top of 11a shell 11
The peripheral wall of 11b shell 11
The opening portion of 11c shell 11
12 pedestals
13 crush platform
13a crushed face
14 injection pipes
15 ingress ports
16 graded blades
17 rotary separators (grading plant)
18 outlet ports
20 crush roller unit
20J roll shaft neck
21 pulverization rollers
The roller shell of 21a pulverization roller 21
The shaft-like portion of 21b roller shell 21a
The roller main body portion of 21c pulverization roller 21
22 journal shafts (rotation shaft)
23 axle journal heads
23a protrusion
23b arm
23c roller supporting part
24 pivot pins
25 stop parts
26 actuators
27 force application apparatus
28 hydraulic cylinders
29 plungers
30 covers
32 conveying gas blow-off outlets
32a blade
40 roll shaft neck protectors
41 baffle-like panels (mounting panel members)
The concave edge portion of 41a baffle-like panel 41
The rising wood of 41b baffle-like panel 41
The side edge part of 41c baffle-like panel 41
The intermediate lower edge of 41d baffle-like panel 41
The side lower edge of 41e baffle-like panel 41
The side region of 41P1 baffle-like panel 41
The lower zone of 41P2 baffle-like panel 41
42 protectors
The base end part of 42a protector 42
The front end of 42b protector 42
43,44 ceramic tile as hard brick
45 seat surfaces
46 mounting bases
Bolt is used in 47 fastenings
48 protections wall portion (protection ring)
Dog hole is used in 49 suspentions.
Claims (10)
1. a kind of roll shaft neck protector, in crushing roller unit, the crushing roller unit includes equipment
Axle journal head configures in the opening portion on the peripheral wall for the shell for being formed in pulverizer, by swinging axle can swing
Mode be supported on the peripheral wall；And
Pulverization roller is mounted on the roller supporting part of the axle journal head via the roll shaft neck with shaft-like portion, have with
The upper surface of the crushing platform rotated in the shell contacts and rotates together and be ground into solid content the roller main body portion of powder body,
The conveying that roller unit is crushed configured with blowout conveying gas upward below the vertical direction in the shaft-like portion
Gas blow-off outlet,
The roll shaft neck protector protects the roll shaft neck not will receive the micro mist conveyed together with the conveying gas
The collision of body,
The roll shaft neck protector is characterized in that, comprising:
Mounting panel members are mounted on the axle journal head；And
Protector, is formed as half frustum shape for surrounding the vertical direction lower portion in the shaft-like portion, and base end part is fixed on
On the mounting panel members, front end is extended towards roller main body portion side, and protector covering comes from the conveying
Part that the conveying gas of gas blow-off outlet is contacted and protect the part not and will receive the collision of the powder body.
2. roll shaft neck protector according to claim 1, which is characterized in that
The vertical direction lower zone of half frustum shape under the installation condition of the protector is formed as, from the cardinal extremity
Portion is declined with the angle more than angle of repose of the powder body from horizontal plane towards the front end to be tilted.
3. roll shaft neck protector according to claim 1, which is characterized in that
The protector is formed as half frustum shape and in conjunction with multiple plates.
4. roll shaft neck protector according to claim 1, which is characterized in that
In the surface-mounted of the side of the protector contacted with the conveying gas from the conveying gas blow-off outlet
There is the hard brick for the collision for protecting the protector not will receive the powder body.
5. roll shaft neck protector according to claim 1, which is characterized in that
The mounting panel members are configured to block a part of the opening portion below the vertical direction of the roller supporting part,
At least part in the roll shaft neck and the swinging axle is protected not will receive the collision of the powder body.
6. roll shaft neck protector according to claim 5, which is characterized in that
The part of the mounting panel members become above vertical direction in the mounted state has the concave edge portion of semi-circular shape,
The lower half portion peripheral shape of the concave edge portion and the roller supporting part is correspondingly formed and is configured along the lower half portion periphery,
The base end part of the protector is fixed close to the concave edge portion,
In the mounted state positioned at the protector vertical direction below and with from it is described conveying gas blow-off outlet conveying
The surface-mounted hard for having the collision for protecting the mounting panel members not will receive the powder body of the side of gas contact
Brick.
7. roll shaft neck protector according to claim 6, which is characterized in that
The mounting panel members have in the mounted state from each side of the lower half portion periphery of the roller supporting part
Along the side region of width direction and vertical direction the lower section extension of the opening portion and in the mounted state along the roller branch
The lower zone extended below the vertical direction of the lower half portion periphery of bearing portion,
The hard brick is assemblied at least part in the lower zone.
8. roll shaft neck protector according to claim 5, which is characterized in that
On the surface for the side of the mounting panel members contacted with the conveying gas from the conveying gas blow-off outlet
It is formed with mounting base for the back side of opposite side, it is tight can utilize to be formed in seat surface and the mounting base on the roller supporting part
Gu it is installed with the mode that bolt is dismounted,
It is formed with around the bolt hole of the mounting base and the head of the fastening bolt is protected not will receive the micro mist
The protection wall portion of the collision of body.
9. a kind of crushing roller unit, includes
Axle journal head configures in the opening portion on the peripheral wall for the shell for being formed in pulverizer, by swinging axle can swing
Mode be supported on the peripheral wall；And
Pulverization roller is mounted on the roller supporting part of the axle journal head via the roll shaft neck with shaft-like portion, have with
The upper surface of the crushing platform rotated in the shell contacts and rotates together and be ground into solid matter the roller main body of powder body
Portion,
The conveying that roller unit is crushed configured with blowout conveying gas upward below the vertical direction in the shaft-like portion
Gas blow-off outlet,
The crushing roller unit is characterized in that,
Roll shaft neck protector described in any item of the claim 1 to 8 is installed in the roll shaft neck.
10. a kind of pulverizer, which is characterized in that
The pulverizer includes
Platform is crushed, can be supported in shell in a manner of the axle center driving rotation along vertical direction；And
Crushing roller unit as claimed in claim 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015251976A JP6779009B2 (en) | 2015-12-24 | 2015-12-24 | Maintenance management method for roller journal protector, crushing roller unit and crusher, and roller journal protector |
| JP2015-251976 | 2015-12-24 | ||
| PCT/JP2016/087785 WO2017110741A1 (en) | 2015-12-24 | 2016-12-19 | Roller journal protector, crushing roller unit and crusher, and method for maintenance management of roller journal protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208627426U true CN208627426U (en) | 2019-03-22 |
Family
ID=59090382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201690001477.4U Active CN208627426U (en) | 2015-12-24 | 2016-12-19 | Roll shaft neck protector crushes roller unit and pulverizer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6779009B2 (en) |
| CN (1) | CN208627426U (en) |
| TW (1) | TWI626993B (en) |
| WO (1) | WO2017110741A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193403A (en) * | 2019-05-13 | 2019-09-03 | 杭州桥遇文化传播有限公司 | A kind of grinding method of dendrobium candidum |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7171177B2 (en) * | 2017-11-06 | 2022-11-15 | 三菱重工業株式会社 | Crusher and how to operate the crusher |
| JP7224810B2 (en) * | 2018-08-27 | 2023-02-20 | 三菱重工業株式会社 | SOLID FUEL CRUSHING DEVICE, POWER PLANT INCLUDING THE SAME, AND CONTROL METHOD FOR SOLID FUEL CRUSHING |
| JP7172314B2 (en) * | 2018-09-10 | 2022-11-16 | 株式会社Ihi | Vertical mill bracket and vertical mill |
| JP2023091410A (en) * | 2021-12-20 | 2023-06-30 | 三菱重工業株式会社 | Crushing roller, solid fuel crushing device and manufacturing method of crushing roller |
| CN117427714B (en) * | 2023-12-21 | 2024-03-29 | 云南西南水泥有限公司 | Automatic stone crushing device with crushing roller protection function |
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| US5678931A (en) * | 1995-10-17 | 1997-10-21 | Morgan Construction Company | Hydrodynamically lubricated eccentrically adjustable bearing |
| JP2000140663A (en) * | 1998-11-09 | 2000-05-23 | Babcock Hitachi Kk | Roller mill |
| KR200439055Y1 (en) * | 2006-11-10 | 2008-03-18 | 한국남부발전 주식회사 | Coal Pulverizer Having Journal Head Liner |
| JP2010125356A (en) * | 2008-11-25 | 2010-06-10 | Ihi Corp | Vertical mill |
| KR100910617B1 (en) * | 2008-12-24 | 2009-08-04 | 주식회사 정원엔지니어링 | Journal head liner of pulverizer and its manufacturing method |
| JP5457713B2 (en) * | 2009-05-07 | 2014-04-02 | 株式会社キンキ | Cutting blade regeneration method and equipment |
| JP5573078B2 (en) * | 2009-09-30 | 2014-08-20 | 株式会社Ｉｈｉ | Vertical mill |
| JP2011224473A (en) * | 2010-04-20 | 2011-11-10 | Babcock Hitachi Kk | Biomass pulverizer, method for operating the same, and coal burning boiler device |
| CN202779177U (en) * | 2012-06-08 | 2013-03-13 | 上海梅山钢铁股份有限公司 | Embedded type rack roller axletree structure |
| CN203061466U (en) * | 2013-01-05 | 2013-07-17 | 中冶南方工程技术有限公司 | Sealing device for roller shaft neck in cleaning section |
| CN104815744B (en) * | 2015-04-21 | 2017-05-24 | 中材（天津）粉体技术装备有限公司 | Vertical roller mill grinding roller protection sleeve |
-
2015
- 2015-12-24 JP JP2015251976A patent/JP6779009B2/en active Active
-
2016
- 2016-12-19 CN CN201690001477.4U patent/CN208627426U/en active Active
- 2016-12-19 WO PCT/JP2016/087785 patent/WO2017110741A1/en active Application Filing
- 2016-12-21 TW TW105142516A patent/TWI626993B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193403A (en) * | 2019-05-13 | 2019-09-03 | 杭州桥遇文化传播有限公司 | A kind of grinding method of dendrobium candidum |
| CN110193403B (en) * | 2019-05-13 | 2021-05-25 | 浙江森宇有限公司 | Grinding processing method of dendrobium officinale |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6779009B2 (en) | 2020-11-04 |
| TWI626993B (en) | 2018-06-21 |
| TW201735999A (en) | 2017-10-16 |
| WO2017110741A1 (en) | 2017-06-29 |
| JP2017113701A (en) | 2017-06-29 |
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| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: Kanagawa Prefecture, Japan Patentee after: Mitsubishi Power Co., Ltd Address before: Kanagawa Prefecture, Japan Patentee before: MITSUBISHI HITACHI POWER SYSTEMS, Ltd. |