CN108591558A - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
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- CN108591558A CN108591558A CN201810402491.0A CN201810402491A CN108591558A CN 108591558 A CN108591558 A CN 108591558A CN 201810402491 A CN201810402491 A CN 201810402491A CN 108591558 A CN108591558 A CN 108591558A
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- Prior art keywords
- pressure
- valve seat
- restriction
- low pressure
- valve
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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
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of pressure reducing valves, pressure reducing valve includes having high pressure chest and the valve body of low pressure chamber, equipped with valve seat, spool and the mandril coordinated with spool top pressure in valve body, the valve seat is equipped with restriction, the valve seat orifice of connection restriction and low pressure chamber is additionally provided on the valve seat, the fluid flowed through from restriction enters low pressure chamber by valve seat orifice, and the mandril is inserted into valve seat orifice.Valve seat orifice is not only inserted into for the mandril coordinated with spool top pressure, also enter low pressure chamber for the fluid after restriction depressurizes, the valve seat orifice being inserted into for mandril only need to be processed on valve seat in this way, the fluid for flowing through restriction can be introduced low pressure chamber, multiple runners intersected in length and breadth need not be processed on valve seat, not only facilitate the processing of valve seat, and the reduction of runner also increases the overall construction intensity of valve seat, solves the problems, such as that the processing of valve seat existing in the prior art is complicated and structural strength is low.
Description
Technical field
The present invention relates to a kind of pressure reducing valves.
Background technology
Pressure reducing valve is a kind of special arrangement of automatic reduction working pressure of pipeline, can will be compared with after given pressure relief ranges
The medium of high pressure reduces to setting pressure.It, can not be direct when needing low-pressure gas since what is exported in gas cylinder is high pressure gas
During use, needs to depressurize high pressure gas, therefore pressure reducing valve is widely used in vaerious fields.
Authorization Notice No. is CN204176068U, and it is more that authorized announcement date is that the Chinese patent of 2015.02.25 discloses one kind
Grade high pressure leading gas pressure reducer, multistage pressure leading gas pressure reducer include shell, and the installation of one upper lateral part of shell is used for
The first pressure spring is installed in the downside of the first handle of adjusting, first handle, and case inside is located at the first pressure spring lower part peace
Diaphragm is filled, mandril is installed in the lower part of diaphragm, and case inside, which is located at mandril, opens up low pressure chamber, and low pressure chamber is to be flowed through for low-pressure fluid
Low pressure chamber.The first valve seat is installed in the lower part that case inside is located at mandril, and the first spool is installed in the inside of the first valve seat.Under shell
Portion opens up air channel between the first spool and the second spool, and lower part of the housing is located at the second spool side and opens up secondary exit port
End, secondary exit port end is communicated with the second spool.When mandril pushes spool to move downward out sealing surface of seat height is opened to certain
After degree, high-pressure fluid loses part energy after high pressure chest by the restriction between the first spool and the first sealing surface of seat,
The pressure reduction of gas reaches decompression purpose.First valve seat is equipped with multiple low-pressure fluids for by flowing through restriction and flows into
Multiple runners of low pressure chamber, on the one hand, the processing of multiple runners increases the processing complexity of valve seat；On the other hand, on valve seat
The structural strength of valve seat can be reduced by processing multiple runners also, reduce longer seat life.
Invention content
The purpose of the present invention is to provide a kind of pressure reducing valve, the processing to solve valve seat existing in the prior art it is complicated and
The low problem of structural strength.
The pressure reducing valve of the present invention adopts the following technical scheme that：
Pressure reducing valve includes having high pressure chest and the valve body of low pressure chamber, in valve body equipped with valve seat, spool and with the cooperation of spool top pressure
Mandril, the valve seat are equipped with restriction, the valve seat orifice of connection restriction and low pressure chamber are additionally provided on the valve seat, from restriction
The fluid flowed through enters low pressure chamber by valve seat orifice, and the mandril is inserted into valve seat orifice.
To avoid mandril top pressure at valve seat end face, block fluid flow is separate on valve seat described in this programme into low pressure chamber
The end of restriction is equipped with the connectivity slot of connection valve seat orifice and low pressure chamber.When mandril top pressure is in valve seat end face, fluid can pass through
Connectivity slot flows into low pressure chamber.
To avoid fluid from occurring Choking phenomenon between mandril and valve seat, far from restriction in valve seat orifice described in this programme
End be equipped with flaring structure, the connectivity slot is connected to flaring structure.Increased between mandril and valve seat by flaring structure
Flow area prevents the fluid after decompression from Choking phenomenon occurring between mandril and valve seat, and in addition connectivity slot connects with flaring structure
The logical processing for facilitating connectivity slot and flaring structure.
Radial positioning is carried out for convenience of to spool, valve seat orifice described in this programme includes path section and major diameter section, restriction
It is arranged in the one end of path section far from major diameter section, the spool is inserted into path section, mandril and spool top pressure in major diameter section
Cooperation.On the one hand, path section reduces the gap between spool and valve seat, can play the role of preferable radial positioning to spool；
On the other hand, partial pressure can be also lost when flowing through the gap between path section and spool by the fluid of restriction, with into
One step reduces Fluid pressure, and fluid is made to reach setting pressure.
To increase the leakproofness of off working state bottom spool and restriction, restriction described in this programme is flared for taper,
Having on spool and is flared the circular cone being adapted to taper, the circular cone top pressure closes restriction when in taper flaring,
Circular cone opens restriction when leaving taper flaring under mandril pushing tow force effect.Off working state bottom spool is adopted with restriction
Coordinated with circular cone and taper flaring, leakproofness of the spool to restriction can be increased, increases life of product.
To increase the leakproofness of off working state bottom spool and valve seat, valve seat described in this programme includes pedestal and compression
Block is folded with the sealing element for sealing restriction when restriction is closed, the compact heap between the compact heap and pedestal
Screw assembly is in valve body.Compact heap Screw assembly is convenient to replace sealing element in sealing element seal failure in valve body, ensures
The sealing effect of valve seat and spool increases life of product.
For increase pressure reducing valve use scope, pressure reducing valve described in this programme be include high pressure relief part and low pressure decompression
Partial two-stage decompression valve, the fluid outlet for for fluid entering the fluid inlet of valve body on valve body and flowing out valve body for fluid are distinguished
The low pressure chamber that part is depressurized with the high pressure chest of high pressure relief part and low pressure is connected to, the low pressure chamber of the high pressure relief part with it is low
The high pressure chest of pressure decompression part is connected to so that the fluid after high pressure relief part reduced pressure flows into low pressure decompression part and carries out two
Grade decompression, the adjusting rod of adjusting rod and low pressure the decompression part of the high pressure relief part be arranged on valve body two it is opposite
End, and the adjusting rod of high pressure relief part and low pressure decompression part adjusting rod coaxial arrangement.On the one hand, pass through connection
High pressure relief part and low pressure decompression part can to fluid carry out two-stage decompression, increase pressure reducing valve inlet and outlet pressure across
Degree, increases the use scope of pressure reducing valve；On the other hand, the arrangement of high pressure relief part and low pressure decompression part facilitates valve body
Processing.
In view of high pressure relief part is different from the elastic elastic force of pressure regulation part on low pressure decompression part, described in this programme
The elastic pressure regulation part of high pressure relief part is disc spring, and the elastic pressure regulation part of low pressure decompression part is spring.Due to disc spring and
Disc spring and spring, which is respectively adopted, in the elastic pressure regulation part of the design feature of spring, high pressure relief part and low pressure decompression part to distinguish
Meet the force request of each section.
To ensure that mandril acts on the stability of the jacking force on spool, there is spherical on spool described in this programme,
There is plane, the spool to pass through spherical and planar top press-fit with mandril on mandril.By the cooperation of spherical and plane,
Facilitate and realize being automatically aligned to for mandril and spool, ensures the stability for the jacking force being applied on spool.
To avoid the adjusting rod appearance rotation when pressure reducing valve works from causing decompression valve outlet pressure inaccurate, institute in this programme
It states valve body and is equipped with the lock nut for being used for being locked at the adjusting rod for adjusting pressure regulation elastic component decrement on valve body.Pass through locking
Adjusting rod is locked on valve body by nut, be can avoid the adjusting rod when pressure reducing valve works and is rotated, and ensures valve outlet pressure
To set pressure.
The beneficial effects of the invention are as follows：Valve seat orifice is not only inserted into for the mandril coordinated with spool top pressure, also for through celebrating a festival
Fluid after head piece decompression enters low pressure chamber, the valve seat orifice being inserted into for mandril only need to be processed on valve seat in this way, you can will flow
The fluid for crossing restriction introduces low pressure chamber, and multiple runners intersected in length and breadth need not be processed on valve seat, not only facilitate valve seat
Processing, and the reduction of runner also increases the overall construction intensity of valve seat, solves the processing of valve seat existing in the prior art
Complicated and low structural strength problem.
Description of the drawings
Fig. 1 is the sectional view of the front view of the specific embodiment 1 of the pressure reducing valve of the present invention；
Fig. 2 is the sectional view of the left view of Fig. 1；
Fig. 3 is the partial enlarged view at A in Fig. 2；
In figure：1- low pressure depressurizes part, and 2- exports aluminium backing, 3- outlet connections, 4- valve core springs, 5- pedestals, 6- sealing rings, 7-
Spool, 8- sealing elements, 9- compact heaps, 10- mandrils, 11- inlet attacks, 12- low pressure chambers, 13- limiters, 14- valve core spring seats,
15- disc spring seats, 16- high pressure reliefs part, 17- adjusting rods, 18- lock nuts, the flaring of 19- tapers, 20- circular cones, 21- bullets
Spring, 22- entrance aluminium backings, 23- are blocked, 24- major diameter sections, 25- path sections, 26- high pressure diaphragms, 27- disc springs, 28- steel balls, 29-
Flaring structure, 30- connectivity slots.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the pressure reducing valve of the present invention, as shown in Figure 1 to Figure 3, pressure reducing valve include having high pressure chest and low pressure
The valve body of chamber 12, equipped with valve seat, spool 7 and mandril 10 with the cooperation of 7 top pressure of spool in valve body, be additionally provided on valve seat restriction and
It is connected to the valve seat orifice of restriction and low pressure chamber 12, the fluid flowed through from restriction enters low pressure chamber 12, mandril 10 by valve seat orifice
It is inserted into valve seat orifice.Valve seat orifice is not only inserted into for mandril 10, also enters low pressure chamber for the fluid after restriction depressurizes
12, the valve seat orifice being inserted into for mandril only need to be processed on valve seat in this way, you can the fluid for flowing through restriction is introduced into low pressure chamber
12, multiple runners intersected in length and breadth need not be processed on valve seat, not only facilitate the processing of valve seat, and the reduction of runner also increases
The overall construction intensity of valve seat solves the problems, such as that the processing of valve seat existing in the prior art is complicated and structural strength is low.
As depicted in figs. 1 and 2, be the use scope for increasing pressure reducing valve, the pressure reducing valve in the present embodiment be include that high pressure subtracts
The two-stage decompression valve of laminate section 16 and low pressure decompression part 1 for fluid enters the fluid inlet of valve body on valve body and for fluid stream
The fluid outlet for going out valve body is connected to the low pressure chamber 12 of the high pressure chest of high pressure relief part 16 and low pressure decompression part 1 respectively, and
The high pressure chest that the low pressure chamber of high pressure relief part 16 depressurizes part 1 with low pressure is connected to so that after high pressure relief part 16 is depressurized
Fluid flow into low pressure decompression part 1 carry out second depressurized.Adjusting rod 17 and low pressure the decompression part 1 of high pressure relief part 16
Adjusting rod is arranged in two opposite ends on valve body, and the adjusting rod 17 and low pressure of high pressure relief part 16 depressurize part
1 adjusting rod coaxial arrangement.On the one hand, part 1 is depressurized by the high pressure relief part 16 of connection and low pressure to carry out fluid
Two-stage decompression increases the span of pressure reducing valve inlet and outlet pressure, increases the use scope of pressure reducing valve；On the other hand, high pressure subtracts
Laminate section 16 and the arrangement of low pressure decompression part 1 facilitate valve body to process.In other embodiments, pressure reducing valve can only include height
Pressure decompression part or low pressure depressurize part；High pressure relief part can also be arranged in left-right direction with low pressure decompression part.
To reduce valve volume, enters the fluid inlet of valve body for fluid on valve body in the present embodiment and flow out valve for fluid
The fluid outlet of body is arranged in the middle part of valve body, and the axis of the equal adjusting rod of the center line of fluid inlet and fluid outlet 17.Valve
The fluid inlet of body and the arrangement of fluid outlet can utmostly reduce the volume of valve body, reduce the cost of valve body.This reality
The fluid inlet applied in example is arranged on inlet attack 11, and fluid outlet is arranged on outlet connection 3.Inlet attack 11 and valve body
Junction be additionally provided with entrance aluminium backing 22, the junction of outlet connection 3 and valve body is equipped with outlet aluminium backing 2, ensure entrance and
The leakproofness of outlet.It should be noted that ensure the cleanliness factor for entering fluid in valve body, the entrance structure 11 in the present embodiment
On be additionally provided with the filtration being filtered to fluid.In other embodiments, the center line of fluid inlet and fluid outlet
It can be with adjusting rod setting at a certain angle；Also filtration can be not provided on inlet attack.
In view of high pressure relief part 16 is different from the elastic force needed for the elastic pressure regulation part on low pressure decompression part 1, this reality
It applies in example, the elastic pressure regulation part of high pressure relief part 16 is disc spring 27, and the elastic pressure regulation part that low pressure depressurizes part 1 is spring 21.
Disc spring 27 and the design feature of spring 21 can meet the force request of decompression parts at different levels respectively.In other embodiments, high pressure
The elastic pressure regulation part of decompression part is alternatively spring；The elastic pressure regulation part of low pressure decompression part is alternatively disc spring.It needs to illustrate
It is that, for convenience of the installation of disc spring 27 and spring 21, the guiding of disc spring 27 in the present embodiment is assemblied in the disc spring seat 15 on valve body,
The guiding of spring 21 is assemblied in the spring base on valve body.In addition, being top-loaded with valve core spring 4, valve core spring between spool 7 and valve body
4 guiding are assemblied on valve core spring seat 14, also due to high pressure relief part 16 is depressurized with low pressure needed for 1 upper valve core spring of part
Elastic force it is different, the elastic force of the valve core spring seat 14 of high pressure relief part 16 is more than the elastic force of low pressure decompression 1 valve core spring of part.
It should be noted that part 1 is depressurized in addition to elastic pressure regulation part and the elastic force of valve core spring are different in high pressure relief part 16 from low pressure
Outside, other structures all same is illustrated with high pressure relief part below.
As shown in figure 3, valve seat includes pedestal 5 and compact heap 9, it is folded in restriction between compact heap 9 and pedestal 5
The sealing element 8 of restriction is sealed when closing, 9 Screw assembly of compact heap is convenient to be replaced in 8 seal failure of sealing element in valve body
Sealing element 8 ensures the sealing effect of valve seat and spool 7, increases life of product.It should be noted that being arranged in height in this implementation
Sealing element 8 in pressure decompression part 16 is by polyimides（Ys-20）Material is made, and the sealing element of low pressure decompression part 1 is moulded by fluorine
Material（F3）Material is made.In addition, being additionally provided with sealing ring 6 between pedestal 5 and valve body, ensure the sealing between pedestal 5 and valve body
Property.In addition, to increase leakproofness of the off working state bottom spool to restriction, the restriction in the present embodiment is flared for taper
19, there are on spool 7 circular cones 20 be adapted to taper flaring 19,20 top pressure of circular cone to be closed when taper is flared on 19
Restriction, circular cone 20 open restriction when leaving taper flaring 19 under 10 pushing tow force effect of mandril.Restriction is by taper
Gap between flaring 19 and circular cone 20 is constituted, and is adjusted between circular cone 20 and taper flaring 19 by adjusting rod 17
Gap, to adjust restriction aperture.
Valve seat orifice in the present embodiment includes path section 25 and major diameter section 24, and restriction is arranged in path section 25 far from major diameter
One end of section 24, spool 7 are inserted into path section 25, and the top pressure in major diameter section 24 coordinates mandril 10 with spool 7.On the one hand, small
Diameter section 25 reduces the gap between spool 7 and valve seat, can play the role of preferable radial positioning to spool 7；On the other hand, it passes through
Partial pressure can also be lost when flowing through the gap between path section 25 and spool 7 by crossing the fluid of restriction, to further decrease
Fluid pressure makes fluid reach setting pressure.For avoid 10 top pressure of mandril at valve seat end face block fluid flow into low pressure chamber 12,
In the present embodiment, the end far from restriction is equipped with the connectivity slot 30 of connection valve seat orifice and low pressure chamber 12 on valve seat.In addition, to keep away
Exempt from fluid and Choking phenomenon occurs between mandril 10 and compact heap 9,24 end far from path section 25 of major diameter section is equipped with flaring and ties
Structure 29, connectivity slot 30 are connected to flaring structure 29.On the one hand, increased between mandril 10 and compact heap 9 by flaring structure 29
Flow area prevents the fluid after decompression from Choking phenomenon occurring between mandril 10 and valve seat, on the other hand, connectivity slot 30 and expansion
Mouth structure 29 is connected to, and facilitates the processing of connectivity slot 30 and flaring structure 29.In other embodiments, ring can be also not provided on spool
The shape conical surface, and the stopping surface with the end face block cooperation of pedestal is equipped on spool, when stopping surface and pedestal block coordinate the time
Head piece is closed；Valve seat is alternatively integral structure, and sealing element can be also not provided between valve seat and valve body；The aperture that each section of valve seat orifice
It also can all same；Also it can be not provided with flaring structure in major diameter section, the fluid for flowing through major diameter section is made to flow directly into low pressure chamber；Valve seat
End can also be not provided with connectivity slot.
It should be noted that the low pressure decompression part 1 of valve body is connected to high pressure relief part 16 by runner, set on valve body
It is useful for the fabrication hole of processing flow channel, the blocking 23 for plugging technology hole is connected on valve body.To ensure that mandril 10 acts on
The stability of jacking force on spool 7 has spherical on spool 7, on mandril 10 there is plane, spool 7 to pass through with mandril 10
Spherical and planar top press-fit.By the cooperation of spherical and plane, facilitates and realizes being automatically aligned to for mandril 10 and spool 7,
Ensure the stability for the jacking force being applied on spool 7.In other embodiments, the pushing tow face on spool with the cooperation of mandril top pressure
It is alternatively planar structure.In view of when pressure reducing valve works, adjusting rod 17 occurs rotating next time causing to depressurize in Fluid pressure effect
Valve outlet pressure is inaccurate, and the valve body in the present embodiment is equipped with for by the adjusting rod of 27 decrement of adjustment spring 21 or disc spring
17 are locked at the lock nut 18 on valve body.In other embodiments, lock nut can be not provided on valve body.
Steel ball 28 is provided between adjusting rod 17 and disc spring seat 15, even if the power that adjusting rod 17 passes to disc spring seat 15 is uneven
It is even, it is adjusted by steel ball 28,15 both sides uniform force of disc spring seat, the power for being ultimately transferred to 27 both sides of disc spring is also uniform, is had
Effect prevents 27 unbalance stress of disc spring from the phenomenon that card resistance occur.Fluid in the present embodiment is gas, in other embodiments fluid
It is alternatively liquid.High pressure relief part 16 and low pressure decompression part 1 are all made of diaphragm type structure, after high pressure relief part reduced pressure
Gas enters the low pressure chamber 12 of high pressure relief part, and high pressure diaphragm 26 is reached flat with the elastic force power of disc spring 27 by gas pressure
Weighing apparatus, while the gas by 16 decompression of high pressure relief part enters the high pressure chest of low pressure decompression part 1, the gas that low pressure diaphragm is subject to
Body pressure reach with 21 Spring balanced of spring, to reach pressure stabilization function.It should be noted that high pressure diaphragm 26, low pressure diaphragm
It is assemblied in valve body by what limiter 13 was stablized.
The specific implementation mode of the pressure reducing valve of the present invention：Part 1 is depressurized along upper with low pressure in the high pressure relief part 16 of valve body
Lower direction arrangement.Slow turn adjusting rod 17, disc spring 27 and spring 21 are compressed, and mandril is transmitted the force to by high pressure diaphragm 26
10, mandril 10 pushes spool 7 to move downward out taper flaring 19 and arrives certain Lift；It is transmitted the force to by low pressure diaphragm
Low pressure depressurizes the mandril of part 1, and mandril pushes the spool of low pressure decompression 1 to move downward out the flaring of corresponding taper to centainly opening
Open height.The high pressure gas entered by the fluid inlet of inlet attack 11 passes through between restriction, path section 25 and spool 7 successively
Gap when loss partial pressure reach design decompression require, major diameter section 24 will be passed through after 40MPa high pressure air reducings to 2MPa
Enter the high pressure chest that low pressure depressurizes part 1 with flaring structure 29, reduces to 2MPa low-pressure gases again by low pressure decompression part 1
0.16MPa reaches requirement.In other embodiments, the gas of part 1 is depressurized by high pressure relief part 16, low pressure
Pressure can be other setting pressure.
The pressure reducing valve of the present invention is a kind of two-stage diaphragm type pressure-reducing valve, and inlet pressure can reach 40MPa~0.5MPa, outlet
Pressure can reach 0.16 ± 0.02MPa, and flow is in 0.1 L/S~4.5L/S（Room temperature）Between, inlet pressure and flow span
It is larger, the high-precision applying working condition of pressure reducing valve can be met.
Claims (10)
1. pressure reducing valve includes the valve body with high pressure chest and low pressure chamber, it is equipped with valve seat, spool in valve body and coordinates with spool top pressure
Mandril, the valve seat be equipped with restriction, characterized in that be additionally provided on the valve seat connection restriction and low pressure chamber valve seat
Hole, the fluid flowed through from restriction enter low pressure chamber by valve seat orifice, and the mandril is inserted into valve seat orifice.
2. pressure reducing valve according to claim 1, characterized in that the end far from restriction is equipped with communicating valve on the valve seat
The connectivity slot of bore and low pressure chamber.
3. pressure reducing valve according to claim 2, characterized in that the end far from restriction is equipped with flaring in the valve seat orifice
Structure, the connectivity slot are connected to flaring structure.
4. pressure reducing valve according to claim 1 or 2 or 3, characterized in that the valve seat orifice includes path section and major diameter section,
Restriction is arranged in the one end of path section far from major diameter section, and the spool is inserted into path section, and mandril is with spool in major diameter section
Interior top pressure cooperation.
5. pressure reducing valve according to claim 1 or 2 or 3, characterized in that the restriction is flared for taper, has on spool
Have and be flared the circular cone being adapted to taper, the circular cone top pressure closes restriction, circular cone when in taper flaring
Restriction is opened when leaving taper flaring under mandril pushing tow force effect.
6. pressure reducing valve according to claim 1 or 2 or 3, characterized in that the valve seat includes pedestal and compact heap, described
The sealing element for sealing restriction when restriction is closed, the compact heap Screw assembly are folded between compact heap and pedestal
In valve body.
7. pressure reducing valve according to claim 1 or 2 or 3, characterized in that the pressure reducing valve be include high pressure relief part and
Low pressure depressurizes the two-stage decompression valve of part, enters the fluid inlet of valve body for fluid on valve body and flows out the fluid of valve body for fluid
The low pressure chamber that part is depressurized in outlet with the high pressure chest of high pressure relief part and low pressure respectively is connected to, the high pressure relief part it is low
The high pressure chest that pressure chamber depressurizes part with low pressure is connected to so that the fluid after high pressure relief part reduced pressure flows into low pressure relief portion
Divide and carry out second depressurized, the adjusting rod of adjusting rod and low pressure the decompression part of the high pressure relief part is arranged on valve body
Two opposite ends, and the adjusting rod coaxial arrangement of the adjusting rod of high pressure relief part and low pressure decompression part.
8. pressure reducing valve according to claim 7, characterized in that the elastic pressure regulation part of the high pressure relief part is disc spring,
The elastic pressure regulation part of low pressure decompression part is spring.
9. pressure reducing valve according to claim 1 or 2 or 3, characterized in that there is spherical on the spool, have on mandril
There are plane, the spool to pass through spherical and planar top press-fit with mandril.
10. pressure reducing valve according to claim 1 or 2 or 3, characterized in that the valve body is equipped with for that will adjust pressure regulation
The adjusting rod of elastic component decrement is locked at the lock nut on valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402491.0A CN108591558B (en) | 2018-04-28 | 2018-04-28 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402491.0A CN108591558B (en) | 2018-04-28 | 2018-04-28 | Pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591558A true CN108591558A (en) | 2018-09-28 |
| CN108591558B CN108591558B (en) | 2020-01-10 |
Family
ID=63619301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402491.0A Active CN108591558B (en) | 2018-04-28 | 2018-04-28 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591558B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524113A (en) * | 2020-11-30 | 2021-03-19 | 重庆红江机械有限责任公司 | Hydraulic pressure stabilizing valve |
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|---|---|---|---|---|
| DE29720625U1 (en) * | 1996-12-16 | 1998-02-12 | Macrifin S.P.A., Mailand/Milano | Control valve with pressure value display |
| CN2305530Y (en) * | 1997-03-10 | 1999-01-27 | 范杰 | Two stage pressure reducing integrated gas pressure reducer |
| CN101025238A (en) * | 2006-02-17 | 2007-08-29 | Novita株式会社 | Pressure reducing valve |
| JP2008224040A (en) * | 2008-04-17 | 2008-09-25 | Kawasaki Precision Machinery Ltd | Overflow preventing valve device |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN202032139U (en) * | 2011-04-21 | 2011-11-09 | 饶华林 | Pressure reduction, stabilization and relief integrated safety valve |
-
2018
- 2018-04-28 CN CN201810402491.0A patent/CN108591558B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29720625U1 (en) * | 1996-12-16 | 1998-02-12 | Macrifin S.P.A., Mailand/Milano | Control valve with pressure value display |
| CN2305530Y (en) * | 1997-03-10 | 1999-01-27 | 范杰 | Two stage pressure reducing integrated gas pressure reducer |
| CN101025238A (en) * | 2006-02-17 | 2007-08-29 | Novita株式会社 | Pressure reducing valve |
| JP2008224040A (en) * | 2008-04-17 | 2008-09-25 | Kawasaki Precision Machinery Ltd | Overflow preventing valve device |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN202032139U (en) * | 2011-04-21 | 2011-11-09 | 饶华林 | Pressure reduction, stabilization and relief integrated safety valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524113A (en) * | 2020-11-30 | 2021-03-19 | 重庆红江机械有限责任公司 | Hydraulic pressure stabilizing valve |
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| Publication number | Publication date |
|---|---|
| CN108591558B (en) | 2020-01-10 |
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