CN107387825A - A kind of pressure-reducing valve - Google Patents
A kind of pressure-reducing valve Download PDFInfo
- Publication number
- CN107387825A CN107387825A CN201710642845.4A CN201710642845A CN107387825A CN 107387825 A CN107387825 A CN 107387825A CN 201710642845 A CN201710642845 A CN 201710642845A CN 107387825 A CN107387825 A CN 107387825A
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- China
- Prior art keywords
- valve
- pressure
- flap
- chamber
- reducing valve
- Prior art date
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- 239000000725 suspension Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000003628 erosive effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000007774 longterm Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
- Safety Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of pressure-reducing valve, pressure-reducing valve includes valve body, outer cavitation-preventive cover, interior cavitation-preventive cover, seal, flap, valve rod and cavity, valve body is fixedly connected with cavity, valve rod includes valve shaft and block, valve shaft is integrally formed with block, flap, block is fixed on same one end of valve shaft, the other end of valve shaft is fixed in valve body, seal is arranged in flap, seal offsets with outer cavitation-preventive cover and interior cavitation-preventive cover, interior cavitation-preventive cover is fixed between block and flap, outer cavitation-preventive cover is fixedly installed in valve body, arrival end chamber and port of export chamber are provided with valve body, fluid is flowed into from arrival end chamber and flowed out from port of export chamber.Valve shaft is integrally formed with block in the present invention, make to be bonded closer between interior cavitation-preventive cover and flap, when larger in valve inlet outlet pressure differential, seal will not release so that flap loss of seal, so that close pressure-reducing valve when will not leak, sealing and security are higher.
Description
Technical field
The present invention relates to a kind of pressure-reducing valve, more particularly to a kind of pressure-reducing valve for preventing that seal from coming off.
Background technology
Pressure-reducing valve is by using the aperture of the opening and closing element in application valve body, is decreased to a certain need so as to adjust inlet pressure
The outlet pressure wanted, and the energy by medium in itself, make outlet pressure keep stable valve automatically.Pressure-reducing valve is widely used in
The too high region of skyscraper, city water-supply pipe network hydraulic pressure, mine and other occasions, to ensure respectively to be obtained with water spot in water supply system
Obtain service hydraulic pressure and flow suitably.
But there is following defect in traditional pressure-reducing valve：
(1) in traditional structure of relief pressure valve, in order to ensure that the connection between interior cavitation-preventive cover and flap more fastens, adopt
Structure is matched for clamping tightly with screw-nut, also can be because of length when the inlet outlet pressure differential in valve is larger and during the operating mode of fast opening and closing
Phase shakes the phenomenon that screw thread matching loose occurs in frequent stress, thus the screw element such as screw, nut fall into valve body or the pump housing it
It is destructive very big afterwards；
(2) traditional pressure-reducing valve is when the inlet outlet pressure differential in valve is larger or during the operating mode of fast opening and closing, because of long-term vibration
Frequent stress, interior cavitation-preventive cover easily separate with flap, and the sealing ring between interior cavitation-preventive cover and flap can occur
Situations such as releasing causes flap loss of seal function, so that water leakage situation still occurs when closing pressure-reducing valve, such pressure-reducing valve
Security performance is greatly reduced.
The content of the invention
For overcome the deficiencies in the prior art, the invention provides a kind of pressure-reducing valve, and its security performance is higher, main purpose
On the one hand situations such as seal for being to solve to be currently located between interior cavitation-preventive cover and flap can be got loose causes flap to lose
The problem of depressurization function, on the other hand provide a kind of safer reliable fastening side between interior cavitation-preventive cover and flap
Formula.
The purpose of the present invention is realized using following technical scheme：
A kind of pressure-reducing valve, the pressure-reducing valve include valve body, outer cavitation-preventive cover, interior cavitation-preventive cover, seal, flap, valve rod
And cavity, the valve body are fixedly connected with the cavity, the valve rod includes valve shaft and block, the valve shaft and the block one
Body formed, the outer cavitation-preventive cover is fixedly installed in the valve body, the interior cavitation-preventive cover be fixed on the block with it is described
Between flap, the flap, the block are fixed on same one end of the valve shaft, and the other end of the valve shaft is fixed on the valve
In vivo, the seal is arranged in the flap, and the seal offsets with the outer cavitation-preventive cover and interior cavitation-preventive cover,
To prevent flap described in the disengagement of seal member.
Further, the flap is provided with the first pressure guide hole, and first pressure guide hole communicates with the seal.
Further, the pressure-reducing valve also includes diaphragm, and the cavity includes upper chamber cover and lower chamber lid, the diaphragm it is outer
Circle periphery is fixed between the upper chamber cover and the lower chamber lid, and the edge of the upper chamber cover is provided with projection, the cavity of resorption
The edge of lid is provided with groove, and the described raised and fit depressions, the side of the diaphragm offsets with the projection, described
The opposite side of diaphragm offsets with the groove.
Further, the interior cavitation-preventive cover is located at the bottom of the flap, and the interior cavitation-preventive cover is provided with Long Circle
Slotted eye.
Further, the other end of the valve shaft is fixed with piston, and the piston is slidably fixed on the upper chamber cover, described
Piston is provided with the second pressure guide hole.
Further, guide pin bushing is arranged with the upper chamber cover, the piston slides in the guide pin bushing.
Further, the flap is provided with annular groove, and the seal is installed in the annular groove；Described first leads
The number for pressing hole and annular groove is multiple.
Further, the pressure-reducing valve also includes filter, and the filter is fixed in the arrival end chamber.
Further, arrival end chamber and port of export chamber are provided with the valve body, control chamber, institute are provided with the cavity
State control chamber respectively with the arrival end chamber and the port of export chamber, the arrival end chamber and the control chamber it
Between be connected with filter, the second stop valve, regulating valve in turn.
Further, the first stop valve, pilot valve are connected with turn between the port of export chamber and the control chamber；It is described
Pressure-reducing valve also includes suspension ring, and the suspension ring are fixed on one end of the cavity.
Compared with prior art, the beneficial effects of the present invention are：
(1) the invention provides a kind of pressure-reducing valve for preventing seal from coming off, wherein the valve rod includes valve shaft and block,
The valve shaft is integrally formed with the block so that being bonded between interior cavitation-preventive cover and flap is more close.When in valve
Inlet outlet pressure differential is larger and during the operating mode of fast opening and closing, interior cavitation-preventive cover is less likely to occur to separate with flap, positioned at interior cavitation-preventive
Cover situations such as seal between flap will not also be got loose and cause flap loss of seal function, so that closing pressure-reducing valve
When be not in water leakage situation, sealing and security are higher.
(2) heretofore described valve shaft is made of one shaping with the block, there is provided between interior cavitation-preventive cover and flap
A kind of safer reliable fastening means.This avoid traditional screw-nut to taking out clamping structure, and employ screw
Nut is matched for clamping tightly structure, also can be because of long-term vibration frequency when the inlet outlet pressure differential in valve is larger and during the operating mode of fast opening and closing
The phenomenon of screw thread matching loose occurs in numerous stress, so that the screw element such as screw, nut falls into destructiveness after valve body or the pump housing
Greatly, integrally formed connected mode can greatly improve the security performance of the pressure-reducing valve.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is a kind of cross section structure diagram of pressure-reducing valve of the present invention；
Fig. 2 is the enlarged drawing at a kind of Fig. 1 pressure-reducing valve A；
Fig. 3 is the enlarged drawing at a kind of Fig. 1 pressure-reducing valve B.
In figure：100th, pressure-reducing valve；10th, valve body；11st, arrival end chamber；12nd, port of export chamber；20th, filter；30th, it is outer
Cavitation-preventive cover；40th, interior cavitation-preventive cover；41st, Long Circle slotted eye；50th, seal；60th, flap；61st, the first pressure guide hole；62nd, it is annular
Groove；70th, valve rod；71st, valve shaft；72nd, block；80th, elastic component；90th, diaphragm；101st, cavity；1011st, control chamber；1012nd, epicoele
Lid；1013rd, lower chamber lid；1014th, it is raised；1015th, groove；102nd, fastener；103rd, pad；104th, pressing plate；105th, collar；106、
Top cover；107th, copper sheathing；108th, the first stop valve；109th, pilot valve；110th, filter；111st, the second stop valve；112nd, regulating valve；
113rd, suspension ring；114th, piston；1141st, the second pressure guide hole；115th, guide pin bushing.
Embodiment
Specific embodiment in 1-3 below in conjunction with the accompanying drawings, the invention will be further described.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It should be noted that when component is referred to as " being fixed on " another component, it can be directly on another component
Or there may also be component placed in the middle.When a component is considered as " connection " another component, it can be directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being arranged at " another component, it
Can be set directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
As Figure 1-3, the invention provides a kind of pressure-reducing valve 100 for preventing seal from coming off, pressure-reducing valve 100 to include valve
Body 10, filter 20, outer cavitation-preventive cover 30, interior cavitation-preventive cover 40, seal 50, flap 60, valve rod 70, elastic component 80, film
Piece 90, cavity 101, fastener 102, pad 103, pressing plate 104, collar 105, top cover 106, copper sheathing 107, the first stop valve 108,
Pilot valve 109, filter 110, the second stop valve 111, regulating valve 112, suspension ring 113, piston 114, guide pin bushing 115.
Valve body 10 is fixedly connected with cavity 101, and arrival end chamber 11 and port of export chamber 12, cavity are provided with valve body 10
Control chamber 1011 is provided with 101, control chamber 1011 connects with arrival end chamber 11 and port of export chamber 12 respectively.
It is connected with filter 110, the second stop valve on pipeline between arrival end chamber 11 and control chamber 1011 in turn
111st, regulating valve 112.It is connected with the first stop valve 108 on pipeline between port of export chamber 12 and control chamber 1011 in turn, leads
Valve 109.Suspension ring 113 are fixed on one end of cavity 101, easy to remove and carrying pressure-reducing valve 100.
Filter 20 is fixed in arrival end chamber 11, and diaphragm 90 is fixed in cavity 101.Seal 50 is fixedly mounted
In in flap 60, seal 50 is located between flap 60 and outer cavitation-preventive cover 30 and interior cavitation-preventive cover 40, and seal 50 is prevented with outer
Cavitation erosion cover 30 and interior cavitation-preventive cover 40 are offseted, and outer cavitation-preventive cover 30 is fixedly installed in valve body 10.
Valve rod 70 includes valve shaft 71 and block 72.Valve shaft 71 is integrally formed with block 72, and block 72 is located at the one of valve shaft 71
End, the other end of valve shaft 71 are fixed on by clamping structure at the center of diaphragm 90.Elastic component 80 is sheathed on valve shaft 71, elasticity
The both ends of part 80 are offseted with cavity 101 and flap 60 respectively, and the outer cavitation-preventive cover 30 is fixedly installed in the valve body 10, interior
Cavitation-preventive cover 40 is fixed between block 72 and flap 60.Interior cavitation-preventive cover 40 is located at the bottom of flap 60, interior cavitation-preventive cover 40
It is provided with Long Circle slotted eye 41.Fluid is flowed into from arrival end chamber 11 and flowed out from port of export chamber 12.
Clamping structure includes fastener 102, pad 103, two pressing plates 104, collar 105 and top cover 106.Valve shaft 71 on to
Under be arranged with fastener 102, pad 103, two pressing plates 104, diaphragm 90, collar 105 and top cover 106 successively.Diaphragm 90 is located in
Between two pressing plates 104, one end and the flap 60 of top cover 106 are offseted, and top cover 106 is slidably connected by copper sheathing 107 and cavity 101.
Fastener 102 is locking nut, and fastener 102 is connected with the threaded one end of valve shaft 71.
As shown in figure 1, the other end of the valve shaft is fixed with piston 114, the piston 114 is slidably fixed on the epicoele
Lid 1012, the piston 114 are provided with the second pressure guide hole 1141.Guide pin bushing 115, the piston are arranged with the upper chamber cover 1012
114 slide in the guide pin bushing 115.
The liquid of flowing is filled with cavity 101, when valve rod 70 is rapidly lifting, the other end of valve shaft 71 is provided with piston
114, also fluid can also shuttle piston 114 in the second pressure guide hole 1141 while rapidly lifting, and this is equivalent to one
Individual buffer unit, avoid the impact that collided between block 72 and interior cavitation-preventive cover 40.
As shown in Fig. 2 flap 60 is provided with the first pressure guide hole 61 and annular groove 62, seal 50 is installed on annular groove 62
Interior, the first pressure guide hole 61 communicates with seal 50, and the number of the first pressure guide hole 61 and annular groove 62 may be designed as multiple.When in
The inlet outlet pressure differential of valve is larger or during the operating mode of fast opening and closing, because of the frequent stress of long-term vibration, interior cavitation-preventive cover 40 and flap 60
It can be slightly separated, because flap 60 is provided with the first pressure guide hole 61 and is communicated with seal 50, the both sides of seal 50 are deposited
In larger pressure difference so that the part on seal 50 can be squeezed into the first pressure guide hole 61, positioned at interior cavitation-preventive cover 40 and valve
Situations such as seal 50 between valve 60 is less likely to occur to release, flap 60 still has sealing function, therefore closes pressure-reducing valve 100
When be not in water leakage situation, the sealing and security of such pressure-reducing valve are greatly improved.
Elastic component 80 is used to drive flap 60 to reset, and seal 50 is installed on flap 60 and pushes down outer cavitation-preventive cover 30.It is close
Sealing is used to seal the gap when fluid is in static between flap 60 and outer cavitation-preventive cover 30.Valve shaft 71 is made with block 72
It is integrally formed so that being bonded between interior cavitation-preventive cover 40 and flap 60 is more close.This avoid traditional screw-nut
To taking out clamping structure, and employ screw-nut and be matched for clamping tightly structure, when the inlet outlet pressure differential in valve is larger and fast opening and closing
Operating mode when, the phenomenon of screw thread matching loose can also occur because of the frequent stress of long-term vibration, so that the screw element such as screw, nut
Greatly, integrally formed connected mode greatly improves the security of the pressure-reducing valve 100 to destructiveness after falling into valve body 10 or the pump housing
Energy.
Interior cavitation-preventive cover 40 is reserved with enough anti-using tensile strength is high, the stainless steel material of cavitation is made
Cavitate metal allowance, and pressure-reducing valve has longer working life during so as to ensure that big pressure difference.Long Circle slotted eye 41 subtracts to having just enter into
The fluid of pressure valve carries out preliminary reduced pressure treatment, part cavitation erosion of this generation on outer cavitation-preventive cover 30 can be transferred to interior anti-
On cavitation erosion cover 40, the sealing between flap 60 and outer cavitation-preventive cover 30 is further improved.
As shown in figure 3, cavity 101 includes upper chamber cover 1012 and lower chamber lid 1013.The outer ring periphery of diaphragm 90 is located in
Between upper chamber cover 1012 and lower chamber lid 1013, and fastened by screw.In order to improve the sealing of control chamber 1011, diaphragm with
The junction of cavity 101 is provided with convex groove and is provided with projection 1014, lower chamber lid to pressing from both sides sealing structure, the edge of upper chamber cover 1012
1013 edge is provided with groove 1015, and diaphragm is located between projection 1014 and groove 1015, projection 1014 and groove 1015
It is engaged, side and the projection 1014 of diaphragm 90 offset, and opposite side and the groove 1015 of diaphragm 90 offset, and occur so as to avoid
The situation that diaphragm 90 and the liquid of the junction of cavity 101 outbound flow.
It should be understood that in the present embodiment, filter 20 is screen pack；Outer cavitation-preventive cover 30 is valve seat；Sealing
Part 50 is sealing ring；Elastic component 80 is compression spring, and keeps certain pre compressed magnitude.Although pressure-reducing valve in the present embodiment
100 be diaphragm type pressure-reducing valve, but has no effect on portion of techniques scheme therein and be applied to other any type of pressure-reducing valves.
The present invention operation principle be：The direction of arrow as shown in Figure 1, at the beginning fluid enter arrival end chamber 11, most
Flowed out afterwards from port of export chamber 12.Flap 60 is driven using the direct pick-up downstream pressure of diaphragm 90, control flap 60 aperture changes
Become area of passage, change the kinetic energy of flow velocity and fluid, the different pressure losses is caused, so as to reach the purpose of decompression.Then
By control and the regulation of regulating system, the fluctuation and spring force for making downstream pressure balance each other, and make downstream pressure in certain mistake
Kept in poor scope constant.
The invention provides a kind of pressure-reducing valve 100 for preventing seal from coming off, wherein valve rod 70 includes valve shaft 71 and block
72, valve shaft 71 is integrally formed with block 72 so that being bonded between interior cavitation-preventive cover 40 and flap 60 is more close, when in valve
Inlet outlet pressure differential is larger and during the operating mode of fast opening and closing, interior cavitation-preventive cover 40 is less likely to occur to separate with flap 60, positioned at interior
Situations such as seal 50 between cavitation-preventive cover 40 and flap 60 will not also be got loose and cause the loss of seal function of flap 60,
So that be not in water leakage situation when closing pressure-reducing valve 100, sealing and security are higher.
Valve shaft 71 is made of one shaping with block 72 in the present invention, there is provided a kind of between interior cavitation-preventive cover 40 and flap 60
Safer reliable fastening means.This avoid traditional screw-nut to taking out clamping structure, and employ screw-nut
Be matched for clamping tightly structure, when the inlet outlet pressure differential in valve is larger and during the operating mode of fast opening and closing, also can because long-term vibration frequently by
The phenomenon of screw thread matching loose occurs in power, so that the screw element such as screw, nut falls into destructive pole after valve body 10 or the pump housing
Greatly, integrally formed connected mode can greatly improve the security performance of the pressure-reducing valve 100.
The foregoing is only a preferred embodiment of the present invention, not makees any formal limitation to the present invention；It is all
The those of ordinary skill of the industry can be shown in by specification accompanying drawing and described above and swimmingly implement the present invention；It is but all
Those skilled in the art without departing from the scope of the present invention, are done using disclosed above technology contents
The equivalent variations of a little variation, modification and evolution gone out, it is the equivalent embodiment of the present invention；It is meanwhile all according to the present invention's
Variation, modification and evolution of any equivalent variations that substantial technological is made to above example etc., still fall within the skill of the present invention
Within the protection domain of art scheme.
Claims (10)
1. a kind of pressure-reducing valve, the pressure-reducing valve include valve body, outer cavitation-preventive cover, interior cavitation-preventive cover, seal, flap, valve rod and
Cavity, the valve body are fixedly connected with the cavity, it is characterised in that：The valve rod includes valve shaft and block, the valve shaft with
The block is integrally formed, and the outer cavitation-preventive cover is fixedly installed in the valve body, and the interior cavitation-preventive cover is fixed on described
Between block and the flap, the flap, the block are fixed on same one end of the valve shaft, and the other end of the valve shaft is consolidated
Due in the valve body, the seal is arranged in the flap, the seal and the outer cavitation-preventive cover and interior gas-tight
Erosion cover offsets, to prevent flap described in the disengagement of seal member.
A kind of 2. pressure-reducing valve as claimed in claim 1, it is characterised in that：The flap is provided with the first pressure guide hole, and described
One pressure guide hole communicates with the seal.
A kind of 3. pressure-reducing valve as claimed in claim 1, it is characterised in that：The pressure-reducing valve also includes diaphragm, the cavity bag
Include upper chamber cover and lower chamber lid, the outer ring periphery of the diaphragm is fixed between the upper chamber cover and the lower chamber lid, it is described on
The edge of chamber lid is provided with projection, and the edge of the lower chamber lid is provided with groove, and the described raised and fit depressions are described
The side of diaphragm offsets with the projection, and the opposite side of the diaphragm offsets with the groove.
A kind of 4. pressure-reducing valve as claimed in claim 1, it is characterised in that：The interior cavitation-preventive cover is located at the bottom of the flap
Portion, the interior cavitation-preventive cover are provided with Long Circle slotted eye.
A kind of 5. pressure-reducing valve as claimed in claim 1, it is characterised in that：The other end of the valve shaft is fixed with piston, described
Piston is slidably fixed on the upper chamber cover, and the piston is provided with the second pressure guide hole.
A kind of 6. pressure-reducing valve as claimed in claim 5, it is characterised in that：Guide pin bushing, the piston are arranged with the upper chamber cover
Slided in the guide pin bushing.
A kind of 7. pressure-reducing valve as claimed in claim 2, it is characterised in that：The flap is provided with annular groove, the seal
It is installed in the annular groove；The number of first pressure guide hole and annular groove is multiple.
A kind of 8. pressure-reducing valve as claimed in claim 3, it is characterised in that：The pressure-reducing valve also includes filter, the mistake
Filter device is fixed in the arrival end chamber.
A kind of 9. pressure-reducing valve as claimed in claim 1, it is characterised in that：Arrival end chamber and the port of export are provided with the valve body
Chamber, is provided with control chamber in the cavity, the control chamber respectively with the arrival end chamber and the port of export chamber,
It is connected with filter, the second stop valve, regulating valve between the arrival end chamber and the control chamber in turn.
A kind of 10. pressure-reducing valve as claimed in claim 8, it is characterised in that：Between the port of export chamber and the control chamber
It is connected with the first stop valve, pilot valve in turn；The pressure-reducing valve also includes suspension ring, and the suspension ring are fixed on one end of the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642845.4A CN107387825B (en) | 2017-07-31 | 2017-07-31 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642845.4A CN107387825B (en) | 2017-07-31 | 2017-07-31 | Pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387825A true CN107387825A (en) | 2017-11-24 |
| CN107387825B CN107387825B (en) | 2024-04-05 |
Family
ID=60344116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710642845.4A Active CN107387825B (en) | 2017-07-31 | 2017-07-31 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387825B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058533A (en) * | 2018-10-18 | 2018-12-21 | 塔罗斯控股有限公司 | A kind of pressure reducing valve |
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| CN109058533A (en) * | 2018-10-18 | 2018-12-21 | 塔罗斯控股有限公司 | A kind of pressure reducing valve |
| CN112664354A (en) * | 2020-12-10 | 2021-04-16 | 西安航天动力研究所 | Differential type isolation diaphragm valve and multi-propellant parallel liquid supply system |
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|---|---|
| CN107387825B (en) | 2024-04-05 |
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