CN214368017U - Pressure relief and pressure holding valve - Google Patents
Pressure relief and pressure holding valve Download PDFInfo
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- CN214368017U CN214368017U CN202120190563.7U CN202120190563U CN214368017U CN 214368017 U CN214368017 U CN 214368017U CN 202120190563 U CN202120190563 U CN 202120190563U CN 214368017 U CN214368017 U CN 214368017U
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Abstract
The utility model belongs to the technical field of the valve, concretely relates to pressure release pressure-holding valve, which comprises a valve body, the valve rod, the valve gap, the valve member, the valve body is connected with the valve gap and forms the valve inner chamber, the valve member sets up on the valve rod, the valve member separates the valve inner chamber for control chamber and circulation chamber, be equipped with the intake antrum in the circulation chamber, go out the water cavity, the disk seat, be equipped with into water accent on the intake antrum, be equipped with out water accent on going out the water cavity, be equipped with first control accent and second control accent on the control chamber, be connected with first pipeline between intake accent and the play water accent, be equipped with the filter on the first pipeline, the pressure regulating pilot valve, be equipped with the second pipeline between first pipeline and the first control accent, be equipped with the third disconnected valve on the second pipeline, second control accent and pressure regulating pilot valve pass through third pipeline intercommunication. The pressure value range of the required holding pressure can be adjusted according to different working condition requirements through the pressure regulating pilot valve.
Description
Technical Field
The utility model belongs to the technical field of the valve, concretely relates to pressure release holds and presses valve.
Background
Pressure relief and hold valves are used primarily in fire fighting or other water supply systems to prevent over-pressurization of the system or to maintain the pressure in the fire fighting water supply system. The fire pump can be characterized after being closed, so that suspended particles with larger specific gravity and larger diameter cannot enter a control system, the system is ensured to circulate smoothly, and the valve can run safely and reliably. Patent CN201621349347.8 discloses a pressure release holds and presses valve action guarantee device, and its pipe connection structure is complicated, and can't adjust the control pressure size.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a pressure release and hold and press valve.
The utility model discloses the technical scheme who takes as follows: a pressure relief pressure valve comprises a valve body, a valve rod, a valve cover and a valve component, wherein the valve body is connected with the valve cover to form a valve inner cavity, the valve component is arranged on the valve rod and divides the valve inner cavity into a control cavity and a circulation cavity, a water inlet cavity, a water outlet cavity and a valve seat are arranged in the circulation cavity, the valve component comprises a valve clack, and under the action of pressure difference between the control cavity and the circulation cavity and the action of pressure difference between two sides of the valve clack, the valve component and the valve rod can move axially to enable the valve clack to move axially relative to the valve seat to be close to or far away from the valve seat to realize the connection/disconnection between the water inlet cavity and the water outlet cavity;
be equipped with into water accent on the intake antrum, be equipped with out the water pocket mouth on going out the water pocket, be equipped with first control accent and second control accent on the control chamber, be connected with first pipeline between intake accent and the play water pocket mouth, be equipped with filter, first break-make valve, pressure regulating pilot valve, second break-make valve from intaking accent to going out the water pocket mouth in proper order on the first pipeline, be equipped with the second pipeline between first break-make valve exit end and the first control accent, be equipped with the third break-make valve on the second pipeline, second control accent and pressure regulating pilot valve pass through the third pipeline intercommunication.
The filter is horizontally arranged.
The drive assembly comprises a lower valve plate, a diaphragm, an upper valve plate and a spring, wherein the lower valve plate, the diaphragm, the upper valve plate and the spring are sequentially sleeved outside the valve rod, the periphery of the diaphragm is fixed between the valve body and the valve cover, and two ends of the spring are respectively abutted to the upper valve plate and the valve cover.
A corrugated pipe is arranged between the upper valve plate and the valve cover and is arranged outside the spring.
And a balance channel for communicating the inner cavity of the corrugated pipe with the outside of the pressure relief and holding valve is arranged on the valve rod.
Valve plate and valve clack be integrated into one piece down, be equipped with cyclic annular boss on the valve rod, valve plate and valve clack setting are equipped with down the gasket down on cyclic annular boss and between, go up the valve plate upper end and pass through the nut fastening, and go up and be equipped with the gasket between valve plate and the nut.
A first sealing element is arranged between the valve clack and the valve rod, and a second sealing element is arranged between the upper valve plate and the valve rod.
The valve rod protrudes from the valve clack and extends downwards to form a guide post, the inner lower end face of the valve body corresponds to the guide post and protrudes to form a guide ring seat, and the guide post and the guide ring seat are matched to form a full-stroke guide structure.
And a pressure gauge is arranged on a first pipeline between the first on-off valve and the pressure regulating pilot valve.
The utility model has the advantages as follows: the utility model discloses the control pressure release that sets up holds the pipeline subassembly simple structure who presses the valve, and can require to adjust the pressure value scope that needs hold the pressure according to the operating mode of difference through the pressure regulating pilot valve, in addition, the filter equipment of establishing is compared through the filter of peripheral hardware and is more convenient for dismantle the washing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
in the figure, 1, a valve body; 101, a water inlet cavity; 102, a water outlet cavity; 103, a valve seat; 104, a water inlet cavity opening; 105, a water outlet cavity opening; 106, a guide ring seat; 2, a valve clack; 3, a valve rod; 301, an annular boss; 302, a lower gasket; 303, arranging a gasket; 304, a balance channel; 305, a first seal; 306, a second seal; 307, guide posts; 308, a nut; 4, a valve cover; 5, a valve assembly; 501, a lower valve plate; 502, a diaphragm; 503, an upper valve plate; 504, a spring; 6, controlling the cavity; 601, a first control chamber port; 602, a second control chamber port; 7, a first conduit; 8, a filter; 9, a first on-off valve; 10, a pressure regulating pilot valve; 11, a second on-off valve; 12, a second conduit; 13, a third shutoff valve; 14, a third conduit; 15, a corrugated pipe; 16, a pressure gauge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be construed as limitations to the embodiments of the present invention, and the following embodiments do not describe the embodiments one by one.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in fig. 1, a pressure relief and pressure holding valve comprises a valve body 1, a valve rod 3, a valve cover 4 and a valve assembly 5, wherein the valve body 1 is connected with the valve cover 4 to form a valve inner cavity, the valve assembly 5 is arranged on the valve rod 3, the valve assembly 5 divides the valve inner cavity into a control cavity 6 and a circulation cavity, a water inlet cavity 101, a water outlet cavity 102 and a valve seat 103 are arranged in the circulation cavity, the valve assembly 5 comprises a valve clack 2, and under the action of pressure difference between the control cavity 6 and the circulation cavity and the pressure difference between two sides of the valve clack 2, the valve assembly 5 and the valve rod 3 can move axially, so that the valve clack 2 moves axially relative to the valve seat 103 to approach or separate from the water inlet cavity 101 and the water outlet cavity 102;
be equipped with into water pocket mouth 104 on the intake antrum 101, be equipped with out water pocket mouth 105 on the play water pocket 102, be equipped with first control pocket mouth 601 and second control pocket mouth 602 on the control chamber 6, be connected with first pipeline 7 between intake pocket mouth 104 and the play water pocket mouth 105, be equipped with filter 8, first on-off valve 9, pressure regulating pilot valve 10, second on-off valve 11 from intake pocket mouth 104 to play water pocket mouth 105 on the first pipeline 7 in proper order, be equipped with second pipeline 12 between first on-off valve 9 exit end and the first control pocket mouth 601, be equipped with third on-off valve 13 on the second pipeline 12, second control pocket mouth 602 and pressure regulating pilot valve 10 are through third pipeline 14 intercommunication. The pressure regulating pilot valve 10 can realize the required pressure holding range regulation according to different working condition requirements. The pipeline connecting structure is simple, the filter is arranged on the external pipeline, and the filter is relatively internally provided with the filtering device, so that the filter is more convenient to disassemble and clean.
The filter 8 is horizontally installed. Thus, the filtering performance is better.
As shown in fig. 2, the valve assembly 5 includes a lower valve plate 501, a diaphragm 502, an upper valve plate 503, and a spring 504, which are sequentially sleeved outside the valve rod 3, the periphery of the diaphragm 502 is fixed between the valve body 1 and the valve cover 4, and two ends of the spring 504 respectively abut against the upper valve plate 503 and the valve cover 4.
Bellows 15 is arranged between upper valve plate 503 and valve cover 4, and bellows 15 is arranged outside spring 504. The arrangement of the corrugated pipe 15 plays a role of spring protection, so that the spring is not contacted with a medium, and the service life is prolonged.
And a balance channel 304 for communicating the inner cavity of the corrugated pipe 15 with the outside of the pressure relief and pressure retaining valve is arranged on the valve rod 3.
As shown in fig. 2, a first seal 305 is provided between the valve flap 2 and the valve stem 3, and as shown in fig. 3, a second seal 306 is provided between the upper valve plate 503 and the valve stem 3. The sealing performance is improved.
As shown in fig. 3, the valve rod 3 protrudes from the valve flap 2 and extends downward to form a guide column 307, the inner lower end surface of the valve body 1 protrudes corresponding to the guide column 307 to form a guide ring seat 106, and the guide column 307 and the guide ring seat 106 cooperate to form a full-stroke guide structure. The full-stroke guide structure enables the opening and closing performance of the valve to be stable and reliable.
A pressure gauge 16 is arranged on the first pipeline 7 between the first on-off valve 9 and the pressure regulating pilot valve 10.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. A pressure relief pressure-sustaining valve comprises a valve body (1), a valve rod (3), a valve cover (4) and a valve assembly (5), wherein the valve body (1) is connected with the valve cover (4) to form a valve inner cavity, the valve assembly (5) is arranged on the valve rod (3), the valve assembly (5) divides the valve inner cavity into a control cavity (6) and a circulation cavity, a water inlet cavity (101), a water outlet cavity (102) and a valve seat (103) are arranged in the circulation cavity, the valve assembly (5) comprises a valve clack (2), and the valve assembly (5) and the valve rod (3) can move along the axial direction under the action of the pressure difference between the control cavity (6) and the circulation cavity and the pressure difference between the two sides of the valve clack (2), so that the valve clack (2) moves close to or far away from the valve seat (103) along the axial direction to realize the connection/disconnection between the water inlet cavity (101) and the water outlet cavity (102); the method is characterized in that:
be equipped with into water chamber mouth (104) on intake antrum (101), be equipped with out water chamber mouth (105) on play water chamber (102), be equipped with first control chamber mouth (601) and second control chamber mouth (602) on control chamber (6), be connected with first pipeline (7) between intake chamber mouth (104) and play water chamber mouth (105), be equipped with filter (8), first on-off valve (9), pressure regulating pilot valve (10), second on-off valve (11) in proper order from intake chamber mouth (104) to play water chamber mouth (105) on first pipeline (7), be equipped with second pipeline (12) between first on-off valve (9) exit end and first control chamber mouth (601), be equipped with third on-off valve (13) on second pipeline (12), second control chamber mouth (602) and pressure regulating pilot valve (10) are through third pipeline (14) intercommunication.
2. The pressure relief and hold-pressure valve of claim 1, wherein: the filter (8) is horizontally arranged.
3. The pressure relief and hold-pressure valve of claim 1, wherein: valve member (5) establish lower valve plate (501), diaphragm (502), go up valve plate (503), spring (504) outside valve rod (3) including establishing in proper order, diaphragm (502) periphery is fixed between valve body (1) and valve gap (4), valve plate (503) and valve gap (4) are gone up in butt joint respectively at spring (504) both ends.
4. The pressure relief and hold-pressure valve of claim 3, wherein: a corrugated pipe (15) is arranged between the upper valve plate (503) and the valve cover (4), and the corrugated pipe (15) is arranged outside the spring (504).
5. The pressure relief and hold-pressure valve of claim 4, wherein: and a balance channel (304) for communicating the inner cavity of the corrugated pipe (15) with the outside of the pressure relief and pressure retaining valve is arranged on the valve rod (3).
6. The pressure relief and hold-pressure valve of claim 3, wherein: lower valve plate (501) and valve clack (2) are integrated into one piece, be equipped with annular boss (301) on valve rod (3), valve plate (501) and valve clack (2) set up on annular boss (301) and between be equipped with down gasket (302) down, go up valve plate (503) upper end and pass through nut (308) fastening, and go up and be equipped with between valve plate (503) and nut (308) gasket (303).
7. The pressure relief and pressure sustaining valve according to any one of claims 3 to 5, wherein: a first sealing piece (305) is arranged between the valve clack (2) and the valve rod (3), and a second sealing piece (306) is arranged between the upper valve plate (503) and the valve rod (3).
8. The pressure relief and pressure sustaining valve according to any one of claims 3 to 5, wherein: the valve rod (3) protrudes from the valve clack (2) and extends downwards to form a guide column (307), the lower end face in the valve body (1) protrudes corresponding to the guide column (307) to form a guide ring seat (106), and the guide column (307) and the guide ring seat (106) are matched to form a full-stroke guide structure.
9. The pressure relief and hold-pressure valve of claim 1, wherein: and a pressure gauge (16) is arranged on the first pipeline (7) between the first on-off valve (9) and the pressure regulating pilot valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120190563.7U CN214368017U (en) | 2021-01-23 | 2021-01-23 | Pressure relief and pressure holding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120190563.7U CN214368017U (en) | 2021-01-23 | 2021-01-23 | Pressure relief and pressure holding valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214368017U true CN214368017U (en) | 2021-10-08 |
Family
ID=77959489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120190563.7U Active CN214368017U (en) | 2021-01-23 | 2021-01-23 | Pressure relief and pressure holding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214368017U (en) |
-
2021
- 2021-01-23 CN CN202120190563.7U patent/CN214368017U/en active Active
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