CN201078498Y - Inner cavity type pressure-limiting valve - Google Patents
Inner cavity type pressure-limiting valve Download PDFInfo
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- CN201078498Y CN201078498Y CNU2007201267316U CN200720126731U CN201078498Y CN 201078498 Y CN201078498 Y CN 201078498Y CN U2007201267316 U CNU2007201267316 U CN U2007201267316U CN 200720126731 U CN200720126731 U CN 200720126731U CN 201078498 Y CN201078498 Y CN 201078498Y
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Abstract
An chamber type pressure limiting valve is provided, which comprises a chamber valve body, the water inlet and outlet arranged on the valve body are communicated with the chamber of the valve body to form a water passage, a pressure-limiting member in the chamber of the valve body is fixedly connected or top-supported with the control rod member and a plugging member, which can block water flow, is arranged on the control rod member. The utility model is characterized in that: the valve body is provided with at least a water outlet; an internal chamber communicated with the water inlet is arranged in the water passage. The internal chamber is provided with at least an opening, which is closed and opened by translational control of the control rod member. The opening of the internal chamber is an up and down opening structure or a single side-opened C type structure. A plugging member, which is connected with the control rod member and adapted to the opening, or a pressure sensing member, which is contacted or fixedly connected with the control rod member and has sealing function, or the combination, is arranged at the opening of the internal chamber. The utility model can improve the working condition of the pressure limiting valve, avoid the vibration and dithering of the valve body and has a long product service life, the water outlet is provided with multiple branched trends and the fluid pressure in the pipelines is quite stable.
Description
[technical field]
The utility model relates to a kind of pressure-limit valve structure that is used on the fluid circuits such as gas or liquid, is specially a kind of structure of internal cavity pressure limiting valve.
[background technique]
In the prior art, if will be controlled at the hydrodynamic pressure on the fluid circuit in certain pressure range, need a pressure-limit valve be set at the pipeline front end, existing pressure-limit valve structure comprises a valve body, valve body is provided with water outlet and water intake, a water shutoff mouth is arranged on the passage between water outlet and the water intake, but at the adaptive controlling rod assembly that a shutoff water shutoff mouth is arranged of the feed-water end of water shutoff mouth, the controlling rod assembly passes this water shutoff mouth fixedlys connected with the pressure limiting diaphragm unit, and pressure limiting diaphragm unit top is provided with spring.In actual the use, when the hydrodynamic pressure of valve inleting water end is very high, fluid is also very high by the pressure of water shutoff mouth, so the pressure that fluid acts on the pressure limiting membrane module is also very big, when this pressure during greater than pressure limiting diaphragm unit upper spring power, to drive the controlling rod assembly fast and move, the controlling rod assembly can seal the water shutoff mouth.The fluid that closes behind the valve continues to flow out, and hydrodynamic pressure will descend this moment, and the pressure that acts on the pressure limiting diaphragm unit also descends, the restoring force of spring acts on power on the diaphragm greater than water, and the controlling rod assembly is moved down, and water shutoff is salty newly opens, go round and begin again, thus the pressure limiting of realization fluid circuit.But this process can cause very large valve body vibration and pressure shake, and pressure-limit valve is produced infringement, reduces its working life, can bring noise simultaneously.Though prior art has been carried out multiple improvement to this kind phenomenon at present, produces little effect.In addition, present employed pressure-limit valve only is provided with a water outlet, when inlet pipeline has a plurality of the trend, so must a plurality of three-way pipes be set on pipeline or other steering tubes could be realized (as shown in Figure 7), manufacture cost and installation cost have been increased undoubtedly, and since the increase of pipeline tie point, the also corresponding increase of the leakage point of whole pipeline.
[model utility content]
Technical problem to be solved in the utility model is at above-mentioned prior art problem, on the basis of existing pressure-limit valve structure, improve, a kind of pressure-limit valve structure of internal cavity is provided, can improve the working condition of pressure-limit valve, prevent valve body vibration and pressure shake, prolong the working life of pressure-limit valve, and make the pipeline hydrodynamic pressure highly stable, simultaneously, can make the system pipeline of the pressure-limit valve of flowing through have a plurality of branches trend.
The technological scheme that the utility model proposed is:
A kind of internal cavity pressure limiting valve, comprise that one contains the valve body of inner chamber, described valve body is provided with water intake and water outlet, be communicated with body cavity, form the water flowing passage, be provided with the pressure limiting assembly of pressure limiting effect in the described body cavity, affixed or hold with the controlling rod assembly, but described controlling rod assembly is provided with the closeouts of shutoff current, it is characterized in that: offer at least one water outlet on the described valve body, also be arranged with an inner chamber body in the water flowing passage of described body cavity, it is communicated with water intake, this inner chamber body is provided with at least one opening, is moved the keying of its opening of control by described controlling rod assembly.
Wherein:
Described pressure limiting assembly is or/and the controlling rod assembly is provided with spring;
Described inner chamber body opening can be the upper and lower opening structure, or is one-sided uncovered C type structure;
Described inner chamber body opening be provided with the controlling rod assembly be connected, with the adaptive closeouts of this opening, or for to contact or pressure-sensitive assembly affixed and that seal, perhaps be that the two makes up with the controlling rod assembly;
Described controlling rod assembly is for passing through in inner chamber body the member that pressure limiting assembly, closeouts can be connected as one; Or for passing through in inner chamber body the member that pressure limiting assembly, closeouts, pressure-sensitive assembly can be connected as one;
Perhaps, described controlling rod assembly is for being arranged at the member that inner chamber body is outside and pressure limiting assembly, closeouts can be connected as one; Or for being arranged at the member that inner chamber body is outside and pressure limiting assembly, closeouts, pressure-sensitive assembly can be connected as one;
Described pressure limiting assembly is the piston with the adaptive band seal ring of valve body, or is diaphragm or the bellows and the adaptive with it supporting plate of fixedlying connected with valve body;
Described pressure-sensitive assembly is the piston with the adaptive band seal ring of inner chamber body opening, or is located at diaphragm or the bellows and the adaptive with it supporting plate of fixedlying connected on the inner chamber body opening, with inner chamber body.
The pressure-limit valve of internal cavity structure provided by the utility model, it is the inner chamber body of water intake connection at pressure-limit valve, inner chamber body is provided with at least one opening, be provided with adaptive with it closeouts at opening, perhaps adaptive closeouts of opening, the pressure-sensitive assembly of the adaptive sealable opening of another opening, wherein the opening of adaptive closeouts is called valve port, so just constitutes the structure of single valve mouth list closeouts structure or two closeouts bivalve mouths.If single valve mouth list closeouts structure, behind valve opening, the suffered hydrodynamic pressure of closeouts descends, and the suffered hydrodynamic pressure of pressure-sensitive assembly is constant, and the common Regulation spring linkage of the pressure closeouts of their make a concerted effort difference and the suffered fluid of pressure limiting assembly is opened and closed valve port.Under this kind situation, the necessary enough big and adaptive bigger spring of the area of pressure limiting assembly could guarantee can open at higher hydrodynamic pressure lower valve.On engineering, the area of two openings or valve port slightly is not both permission, can compensate automatically by the hydrodynamic pressure of pressure limiting assembly, and consequently the voltage limiting value of pressure-limit valve will have deviation.Because closeouts is at the water outlet side of valve port, when closed Open valve, the shutoff power that strengthens suddenly or subdue is opposite with moving direction, makes that valve can slow open and close.And, the closeouts of this kind internal cavity pressure limiting valve is at the water outlet side of valve port, just in time opposite with the pressure-limit valve of water shutoff baffle-type, the vibration problem and the pressure jitter problem of former limited valve have fundamentally been solved, and the pressure limiting principle of the pressure-limit valve of change prior art, no longer need to realize, but the variation of the actual bore by the water shutoff mouth is appeared suddenly by the switching of water shutoff mouth.This structural design can be improved the working condition of pressure-limit valve, prevents valve body vibration and pressure shake, the working life of prolongation pressure-limit valve, and make the pipeline hydrodynamic pressure highly stable.If the structure of two closeouts bivalve mouths has also solved the wear problem that the pressure-sensitive assembly moves and produced in high-pressure liquid, life of valve is further increased.And, owing to be the double outlets design, the inner chamber bore that bears high pressure diminished, thereby closeouts is diminished, and then pressure limiting assembly area and adaptive spring are diminished, valve body is stressed also to diminish, and the valve volume also diminishes, and cost also reduces greatly.And, valve still can be opened with closed under less pressure limiting assembly area and adaptive spring condition under high arbitrarily hydrodynamic pressure because two suffered hydrodynamic pressures of closeouts can liquidate.At outside two closeouts or connection shutoff and the pressure-sensitive assembly of connecting of inner chamber, the inner chamber bore that bears high pressure is diminished, thereby closeouts is diminished, and then pressure limiting assembly area and adaptive spring are diminished, valve body is stressed also to diminish, and the valve volume also diminishes, and cost also lowers.In addition, the utility model designs a plurality of water outlets on valve body, can make the current of the pressure-limit valve of flowing through have a plurality of trends, do not need to connect separately again threeway and other adaptors, to reduce manufacture cost and installation cost, reduce leakage point, improve the reliability of using.
[description of drawings]
Fig. 1 .1～1.7 are the utility model embodiment one each water outlet structural representation;
Fig. 1 .8 is the lateral plan of Fig. 1 .2;
Fig. 2 .1～2.7 are the utility model embodiment two each water outlet structural representations;
Fig. 2 .8 is the lateral plan of Fig. 2 .2;
Fig. 3 .1～3.7 are the utility model embodiment three each water outlet structural representations;
Fig. 3 .8 is the lateral plan of Fig. 3 .2;
Fig. 4 .1～4.7 are the utility model embodiment four each water outlet structural representations;
Fig. 4 .8 is the lateral plan of Fig. 4 .2;
Fig. 5 is the embodiment of the invention five structural representations;
Fig. 6 is the embodiment of the invention six structural representations;
Fig. 7 uses schematic representation for existing pressure-limit valve in pipeline;
Fig. 8 uses schematic representation for the utility model in pipeline.
[embodiment]
The utility model provides a kind of vibration-proof structure of internal cavity pressure limiting valve, it comprises that one contains the valve body of inner chamber, offer water intake and water outlet on the described valve body, be communicated with body cavity, form a water flowing passage, in described body cavity, be provided with the pressure limiting assembly of pressure limiting effect, affixed or hold with the controlling rod assembly, but described controlling rod assembly is provided with the closeouts of shutoff current, the utility model main feature is, in the water flowing passage of described body cavity, also is arranged with an inner chamber body, this inner chamber body is communicated with water intake, which is provided with at least one opening, this opening can be the upper and lower opening structure, or is one-sided uncovered C type structure.Described inner chamber body opening be provided with the controlling rod assembly be connected, with the adaptive closeouts of opening, or for to contact or pressure-sensitive assembly affixed and that seal, perhaps be that the two makes up with the controlling rod assembly.Can under the effect of current, move interlock control by controlling rod assembly and closeouts, with shutoff water flowing passage.Simultaneously, be to be arranged at inner chamber owing to pressure-limit valve is actual, therefore, on valve body, can establish at least two water outlets (referring to Fig. 8) according to the trend of pressure-limit valve rising pipe, can reduce the setting of respective accessory, reduce and make and installation cost, simultaneously, can reduce tie point, thereby reduce the generation of leaking.
In general, the opening of adaptive closeouts is called valve port, water outlet side at valve port has the pressure limiting assembly, the pressure F of the fluid that it is suffered equals the area S of the pressure P * pressure limiting assembly of fluid behind valve, if pressure P is less than the voltage limiting value of pressure-limit valve behind the valve, spring force will move downward to lower compression pressure limiting assembly linkage controlling rod assembly and closeouts, valve opening, and fluid can pass through valve.If pressure P equals the voltage limiting value of pressure-limit valve behind the valve, will make progress pressuring spring linkage controlling rod assembly and closeouts of pressure limiting assembly moves upward, valve closes, and fluid cannot pass through valve.When valve closes, when hydrodynamic pressure rises, also can not press off valve port, because at the offside of valve port a closeouts of the same area or pressure-sensitive assembly are arranged, their suffered identical strength of hydrodynamic pressure numerical value is opposite, so can cancel out each other.If the two closeouts structures of bivalve mouth, when valve opening and closure, the controlling rod assembly is suffered makes a concerted effort to be always zero.The pressure limiting assembly just can be according to the pressure regulating spring of fluid behind the valve, and the linkage closeouts is easily opened and closed valve port.If single valve mouth list closeouts structure, behind valve opening, the suffered hydrodynamic pressure of closeouts descends, and the suffered hydrodynamic pressure of pressure-sensitive assembly is constant, and the common Regulation spring linkage of the pressure closeouts of their make a concerted effort difference and the suffered fluid of pressure limiting assembly is opened and closed valve port.Under this kind situation, the necessary enough big and adaptive bigger spring of the area of pressure limiting assembly could guarantee can open at higher hydrodynamic pressure lower valve.On engineering, the area of two openings or valve port slightly is not both permission, can mend automatically by the hydrodynamic pressure of pressure limiting assembly and taste, and consequently the voltage limiting value of pressure-limit valve will have deviation.Because closeouts is at the water outlet side of valve port, when closed Open valve, the shutoff power that strengthens suddenly or subdue (fluid inside and outside differential pressure * closeouts area) is opposite with moving direction, makes the valve can slow open and close.The closeouts of this kind internal cavity pressure limiting valve is at the water outlet side of valve port, just in time opposite with the pressure-limit valve of water shutoff baffle-type, the vibration problem and the pressure jitter problem of former limited valve have fundamentally been solved, and change the pressure limiting principle of the pressure-limit valve of original technology, no longer need to realize, but the variation of the actual bore by the water shutoff mouth is appeared suddenly by the switching of water shutoff mouth.
In conjunction with the accompanying drawings the utility model structure is described further according to embodiment below.
Embodiment one:
Present embodiment one inner chamber body is through-type single valve mouth list closeouts structure.Various water outlet structure in the present embodiment has been showed in Fig. 1 .1～1.8.
Shown in Fig. 1 .1, present embodiment is provided with a water intake 1 and a water outlet 7 on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 is through-type structure, on having, following two straight-through openings, controlling rod assembly 5 is a through rod in the present embodiment, passes through in inner chamber body 6 cavitys, and the lower end links to each other with closeouts 9, the seal shaft 8A of the fixedly connected band O circle in neutral position, fixedly connected with pressure limiting assembly 3A in the upper end, the exceed compostle member of pressuring film plate and supporting plate of described pressure limiting assembly 3A is fixedlyed connected with valve body 2, pressure limiting assembly 3A top holds spring 4 (certainly, also can be provided with spring on the controlling rod assembly, or both are provided with simultaneously, do not draw among the figure).Wherein the seal shaft 8A with the O circle is positioned at side within inner chamber body 6 upper sheds, and 6 upper sheds seal to inner chamber body by seal ring, and closeouts 9 is positioned at the inner chamber body 6 under sheds outsides (opening of adaptive closeouts is called valve port).During work, fluid enters inner chamber body 6 from water intake 1, flows out inner chamber body 6 from inner chamber body 6 lower openings and enters water chamber, flows out pressure-limit valve from water outlet 7.When the hydrodynamic pressure at water outlet 7 places hanged down, spring 4 can oppress pressure limiting assembly 3A gang control lever assemblies 5 and closeouts 9 moves downward, and makes valve opening; Otherwise valve is with closure.When valve closes, the water chamber hydrodynamic pressure increases suddenly, and water chamber is full of water, makes intake pressure can not press off closeouts 9, because there is one to be subjected to the reciprocal power of identical size with closeouts 9 with the seal shaft 8A of the band O of area circle, it is zero that two power liquidate.Flow out when water outlet 7 has fluid, the hydrodynamic pressure that closeouts 9 outsides are subjected to descends, and spring 4 presses off closeouts 9, and valve is open-minded.
Below described pressure-limit valve inner-cavity structure identical with said structure, only valve body 2 upper water-out mouths are provided with difference.Do further division below.
Shown in Fig. 1 .2, present embodiment valve body 2 is provided with two water outlets 7,10, can be communicated with two different pipelines respectively, and is very convenient.
Shown in Fig. 1 .3, also contain two water outlets 7,10 on the present embodiment valve body 2, but water outlet 7 is provided with two openings up and down, can be communicated with two different pipelines respectively, and capping 11 is equipped with in activity on the water outlet 10, when the needs connecting pipeline, and detachable capping 11 down, with other pipeline connection, realize the connection of three-dimensional pipeline; When not needing to be connected with other pipeline, available capping 11 shutoff, very convenient.
Shown in Fig. 1 .4, also contain two water outlets 7,10 on the present embodiment valve body 2, but water outlet 10 be provided with about two openings, being communicated with two different pipelines respectively, and capping 11 is equipped with in activity on the water outlet 7, when the needs connecting pipeline, detachable capping 11 down is communicated with the three-dimensional pipeline; When not needing to be connected with other pipeline, available capping 11 shutoff.
Shown in Fig. 1 .5, contain two water outlets 7,10 on the present embodiment valve body 2, water outlet 7 is provided with an outlet, and water outlet 10 be provided with about two openings, to be communicated with two different pipelines respectively, can be communicated with the three-dimensional pipeline equally.
Shown in Fig. 1 .6, present embodiment valve body 2 is provided with a water outlet 10, but this water outlet 10 be provided with about two openings, to be communicated with two different pipelines respectively.
Shown in Fig. 1 .7, present embodiment valve body 2 is provided with a water outlet 7, and this water outlet 7 is provided with two openings up and down, to be communicated with two different pipelines respectively.
Shown in Fig. 1 .2, Fig. 1 .8, present embodiment is provided with two water outlets 7,10 on valve body 2 left and right directions, also also be provided with water outlet 12 in its side, can be communicated with three even more rising pipe respectively.
When present embodiment actual production product, there is one to be threaded with valve body or capping 11 that flange is connected on the water outlet 10, this capping 11 can not perforate, also can perforate, shown in Fig. 1 .2, Fig. 1 .3 and Fig. 1 .4.Even on Fig. 1 .2 architecture basics, opening the water outlet that be arranged in parallel more than 2 or 2 in the capping 11, need with convenient different connection.Water outlet and water intake caliber can be identical or different, can also mix ball valve on water outlet, to make things convenient for the maintenance of equipment behind the valve.In actual applications, water intake is the outside thread mouth of 4 fens bores, and water outlet is the outside thread mouth of 4 fens bore, and another is the reducing tee of 2 fens bores; Or water intake is the outside thread mouth of 4 fens bores, and water outlet is the outside thread mouth of 4 fens bore, and another is the reducing tee of 3 fens bores; Or water intake is the outside thread mouth of 4 fens bores, and water outlet is the same footpath threeway of the outside thread mouth of two 4 fens bores.The structural applications of these three kinds of sizes is the widest.
Embodiment two:
Present embodiment two inner chamber body are the through-type two closeouts structures of bivalve mouth.Various water outlet structure in the present embodiment has been showed in Fig. 2 .1～2.8.
Shown in Fig. 2 .1, water intake 1 and water outlet 7 are arranged on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 has two straight-through openings up and down, controlling rod assembly 5 also is a through rod, pass through in inner chamber body 6 cavitys, the lower end links to each other with closeouts 9, the also fixedly connected closeouts 8B in neutral position, fixedly connected with pressure limiting assembly 3A in the upper end, also the exceed compostle member of pressuring film plate and supporting plate of described pressure limiting assembly 3A is fixedlyed connected with valve body 2, and pressure limiting assembly 3A top holds spring 4.Wherein closeouts 8B is positioned at side within inner chamber body 6 upper sheds, by controlling rod assembly 5 move that 6 upper sheds seal to inner chamber body, closeouts 9 is positioned at the inner chamber body 6 under sheds outside.During work, fluid enters inner chamber body 6 from water intake 1, flows out inner chamber body 6 from inner chamber body 6 lower openings and enters water chamber, flows out pressure-limit valve from water outlet 7.When the hydrodynamic pressure at water outlet 7 places hanged down, spring 4 can be oppressed pressure limiting assembly 3A gang control lever assemblies 5 and closeouts 8B and closeouts 9 and be moved downward, and makes valve opening; Otherwise valve is with closure.When valve closes, the water chamber hydrodynamic pressure increases suddenly, and water chamber is full of water, make intake pressure can not press off closeouts 8B and closeouts 9, because closeouts 8B is identical with the area of closeouts 9, the power size of suffered fluid is identical, direction is opposite, and it is zero that two power liquidate.Flow out when water outlet 7 has fluid, hydrodynamic pressure descends, and spring 4 presses off closeouts 8B and closeouts 9, and valve is open-minded.Behind valve opening, closeouts 8B and closeouts 9 suffered fluids still are zero with joint efforts, so that valve opening is closed is very dexterous, it is smaller that spring 4 and pressure limiting assembly 3A can select for use.And no matter how high hydrodynamic pressure is, all can proper functioning.
Present embodiment is with respect to embodiment one, and its structural design is more perfect, one, because closeouts 8B sealing is adopted in embodiment's one inner chamber body upper shed, wall friction is frequent in seal ring and the inner chamber body, weares and teares easily when the time is longer, need change; Its two because present embodiment two closeouts structures that are the bivalve mouth, as aforementioned pointed, valve opening is closed very dexterous, can select less spring and pressure limiting assembly for use, can further reduce production cost of products undoubtedly, prolongs product working life.
Shown in Fig. 2 .2～2.8, each inner-cavity structure of present embodiment is identical with said structure, and different is that valve body 2 upper water-out mouths are provided with difference, and the setting of described water outlet is corresponding with embodiment one.
When present embodiment actual production product, there is one to be threaded with valve body or capping 11 that flange is connected on the water outlet 10, this capping can not perforate, also can perforate, shown in Fig. 1 .2, Fig. 1 .3 and Fig. 1 .4.Even on Fig. 1 .2 architecture basics, opening the water outlet that be arranged in parallel more than 2 or 2 in the capping 11, need with convenient different connection.Water outlet and water intake caliber can be identical or different, can also mix ball valve on water outlet, to make things convenient for the maintenance of equipment behind the valve.In actual applications, water intake is the outside thread mouth of 4 fens bores, and water outlet is the outside thread mouth of 4 fens bore, and another is the reducing tee of 2 fens bores; Or water intake is the outside thread mouth of 4 fens bores, and water outlet is the outside thread mouth of 4 fens bore, and another is the reducing tee of 3 fens bores; Or water intake is the outside thread mouth of 4 fens bores, and water outlet is the same footpath threeway of the outside thread mouth of two 4 fens bores.The structural applications of these three kinds of sizes is the widest.
Embodiment three:
Present embodiment three and embodiment's one basically identical, inner chamber body also is through-type single valve mouth list closeouts structure.Shown in Fig. 3 .1, water intake 1 and water outlet 7 are arranged on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 has two straight-through openings up and down, controlling rod assembly 5 also is a through rod, pass through in inner chamber body 6 cavitys, the lower end links to each other with closeouts 9, the seal shaft 8A of neutral position fixedly connected band O circle, fixedly connected with pressure limiting assembly 3B in the upper end, but described pressure limiting assembly 3B is the seal ring of pressure limiting and the compostle member of supporting plate, fixedlys connected with valve body 2, and pressure limiting assembly 3B top holds spring 4.Shown in Fig. 3 .1～3.8, the various water outlet structure of offering on the valve body 2 in the present embodiment is identical with embodiment one.
Embodiment four:
Present embodiment four and embodiment's two basically identicals, inner chamber body also are the through-type two closeouts structures of bivalve mouth.Shown in Fig. 4 .1, water intake 1 and water outlet 7 are arranged on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 has two straight-through openings up and down, controlling rod assembly 5 also is a through rod, pass through in inner chamber body 6 cavitys, the lower end links to each other with closeouts 9, the also fixedly connected closeouts 8B in neutral position, fixedly connected with pressure limiting assembly 3B in the upper end, but described pressure limiting assembly 3B also is the seal ring of pressure limiting and the compostle member of supporting plate, fixedlys connected with valve body 2, and pressure limiting assembly 3B top holds spring 4.Shown in Fig. 4 .1～4.8, the various water outlet structure of offering on the valve body in the present embodiment is identical with embodiment two.
Embodiment five:
Present embodiment five inner chamber body are another kind of through-type single valve mouth list closeouts structure.
As shown in Figure 5, water intake 1 and water outlet 7 are arranged on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 have two straight-through openings up and down, and controlling rod assembly 5 is for being arranged at inner chamber body 6 outsides, its bottom is provided with closeouts 9, closeouts 9 is positioned at the inner chamber body 6 under sheds outside, and controlling rod assembly 5 upper ends are provided with extension bar, hold or a fixedly connected pressure-sensitive assembly 8C, this pressure-sensitive assembly 8C is pressure-sensitive diaphragm and adaptive with it supporting plate, and it is fixedlyed connected with inner chamber body 6 upper sheds; Controlling rod assembly 5 upper ends also are provided with extension bar on, hold with pressure limiting assembly 3A or fixedly connected, and form a frame component that pressure limiting assembly 3A, closeouts 9, pressure-sensitive assembly 8C can be connected as one.Pressure limiting assembly 3A is fixedlyed connected with valve body 2, and pressure limiting assembly 3A top holds spring 4.During work, fluid enters body cavity body 6 from water intake 1, flows out inner chamber body 6 from inner chamber body 6 lower openings and enters water chamber, flows out pressure-limit valve from water outlet 7.
When the hydrodynamic pressure at water outlet 7 places hanged down, spring 4 can oppress pressure limiting assembly 3A interlock controlling rod assemblies 5 and closeouts 9 moves downward, and makes valve opening; Otherwise valve is with closure.When valve closes, the hydrodynamic pressure of inflow increases suddenly, also can not press off closeouts 9, because a reciprocal power that is subjected to identical size with the pressure-sensitive diaphragm and the supporting plate of area with closeouts 9 is arranged, it is zero that two power liquidate.Flow out when water outlet 7 has fluid, hydrodynamic pressure descends, and spring 4 presses off closeouts 9, and valve is open-minded.Present embodiment does not pass for 6 li from inner chamber body owing to controlling rod assembly 5, so the valid circulation area of inner chamber body 6 is bigger, so its internal diameter can be relatively littler.Thus, closeouts 9, pressure-sensitive assembly 8C, pressure limiting assembly 3A and spring all can be corresponding littler, and valve intensity increases, and cost reduces.
Present embodiment also can be the same with the foregoing description, offers different water outlets on valve body 2, makes the fluid through pressure-limit valve have a plurality of water outlet trends.
Embodiment six:
Present embodiment six inner chamber body are the single valve mouth list closeouts structure of C type.
As shown in Figure 6, water intake 1 and water outlet 7 are arranged on valve body 2, water intake 1 communication with cavity body 6, inner chamber body 6 is one-sided uncovered C type structure, the inner core of a little C type structure of inner ring set, inner core constitutes two openings up and down in inner chamber body 6 and between the inner chamber body 6, there is closeouts 9 in the upper shed outside, closeouts 9 is fixedlyed connected with controlling rod assembly 5, among this embodiment, controlling rod assembly 5 totally also is a shaped as frame structure, the seal shaft 8A of the also fixedly connected band O circle in its lower end, and the seal shaft 8A of band O circle is positioned at the inboard of inner chamber body 6 under sheds, controlling rod assembly 5 is fixedlyed connected closeouts 9 from the outside of inner chamber body 6 with the seal shaft 8A of band O circle, and fixedly connected with pressure limiting assembly 3A, pressure limiting assembly 3A is fixedlyed connected with valve body 2, and pressure limiting assembly 3A top holds spring 4.Fluid enters body cavity body 6 from water intake 1, flows out inner chamber body 6 from inner chamber body 6 lower openings and enters water chamber, flows out pressure-limit valve from water outlet 7.When the hydrodynamic pressure at water outlet 7 places hanged down, spring 4 can oppress pressure limiting assembly 3 gang control lever assemblies 5 and closeouts 9 moves downward, and make valve opening, otherwise valve is with closure.When valve closes, the hydrodynamic pressure of inflow increases suddenly, also can not press off closeouts 9, because there is one to be subjected to the reciprocal power of identical size with closeouts 9 with the seal shaft 8A of the band O of area circle, it is zero that two power liquidate.Flow out when water outlet 7 has fluid, hydrodynamic pressure descends, and spring 4 presses off closeouts 9, and valve is open-minded.Because controlling rod assembly 5 does not pass for 6 li from inner chamber body, the valid circulation area of inner chamber body 6 is bigger, so its internal diameter can be relatively littler.Thus, seal shaft 8A, pressure limiting assembly 3A and the spring 4 of closeouts 9, band O circle all can be corresponding littler, and valve intensity increases, and cost reduces.
Similarly, present embodiment also can be the same with the foregoing description, offers different water outlets on valve body 2, makes the fluid through pressure-limit valve have a plurality of water outlet trends.
Should be pointed out that above-mentioned description at each specific embodiment is comparatively concrete and detailed, can not therefore be interpreted as restriction the utility model claim.Therefore, the utility model scope of patent protection should be as the criterion with claims.
Claims (9)
1. internal cavity pressure limiting valve, comprise the valve body that contains inner chamber, described valve body is provided with water intake and water outlet, be communicated with body cavity, form the water flowing passage, be provided with the pressure limiting assembly of pressure limiting effect in the described body cavity, affixed or hold with the controlling rod assembly, but described controlling rod assembly is provided with the closeouts of shutoff current, it is characterized in that: offer at least one water outlet on the described valve body; Also be arranged with an inner chamber body in the water flowing passage of described body cavity, it is communicated with water intake, and this inner chamber body is provided with at least one opening, is moved the keying of its opening of control by described controlling rod assembly.
2. internal cavity pressure limiting valve according to claim 1 is characterized in that: described pressure limiting assembly is or/and the controlling rod assembly is provided with spring.
3. internal cavity pressure limiting valve according to claim 1 and 2 is characterized in that: described inner chamber body opening is the upper and lower opening structure, or is one-sided uncovered C type structure.
4. internal cavity pressure limiting valve according to claim 3, it is characterized in that: described inner chamber body opening be provided with the controlling rod assembly be connected, with the adaptive closeouts of this opening, or, perhaps be the two combination for to contact or pressure-sensitive assembly affixed and that seal with the controlling rod assembly.
5. internal cavity pressure limiting valve according to claim 4 is characterized in that: described controlling rod assembly is for passing through in inner chamber body the member that pressure limiting assembly, closeouts can be connected as one; Or for passing through in inner chamber body the member that pressure limiting assembly, closeouts, pressure-sensitive assembly can be connected as one.
6. internal cavity pressure limiting valve according to claim 4 is characterized in that: described controlling rod assembly is for being arranged at the member that inner chamber body is outside and pressure limiting assembly, closeouts can be connected as one; Or for being arranged at the member that inner chamber body is outside and pressure limiting assembly, closeouts, pressure-sensitive assembly can be connected as one.
7. according to claim 1,2,4,5,6 arbitrary described internal cavity pressure limiting valves, it is characterized in that: described pressure limiting assembly for the piston of the adaptive band seal ring of valve body, or be diaphragm or the bellows and the adaptive with it supporting plate of fixedlying connected with valve body.
8. internal cavity pressure limiting valve according to claim 3 is characterized in that: described pressure limiting assembly for the piston of the adaptive band seal ring of valve body, or be diaphragm or the bellows and the adaptive with it supporting plate of fixedlying connected with valve body.
9. according to the arbitrary described internal cavity pressure limiting valve of claim 4～6, it is characterized in that: described pressure-sensitive assembly for the piston of the adaptive band seal ring of inner chamber body opening, or being located at the diaphragm or the bellows of fixedlying connected on the inner chamber body opening, with inner chamber body reaches adaptive with it supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201267316U CN201078498Y (en) | 2007-03-02 | 2007-07-25 | Inner cavity type pressure-limiting valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720118790.9 | 2007-03-02 | ||
| CN200720118790 | 2007-03-02 | ||
| CNU2007201267316U CN201078498Y (en) | 2007-03-02 | 2007-07-25 | Inner cavity type pressure-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078498Y true CN201078498Y (en) | 2008-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201267316U Expired - Fee Related CN201078498Y (en) | 2007-03-02 | 2007-07-25 | Inner cavity type pressure-limiting valve |
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| Country | Link |
|---|---|
| CN (1) | CN201078498Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN108775432A (en) * | 2018-06-04 | 2018-11-09 | 江苏天域阀业制造有限公司 | A kind of pressure reducing throttle valve |
-
2007
- 2007-07-25 CN CNU2007201267316U patent/CN201078498Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559467A (en) * | 2017-08-01 | 2018-01-09 | 哈尔滨工程大学 | A kind of three screw pump fluid pulsation energy storage safety valve |
| CN108775432A (en) * | 2018-06-04 | 2018-11-09 | 江苏天域阀业制造有限公司 | A kind of pressure reducing throttle valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Man Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20090825 |