CN211117827U

CN211117827U - Self-sealing pressure reducing valve

Info

Publication number: CN211117827U
Application number: CN201922068612.5U
Authority: CN
Inventors: 杨迎龙
Original assignee: Zhejiang Boyit Electrical Technology Co ltd
Current assignee: Zhejiang Boyit Electrical Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-28
Anticipated expiration: 2029-11-26

Abstract

The utility model discloses a self sealss relief pressure valve, include the valve body, set up in the runner of valve body and install in the valve gap of valve body, be equipped with the disk seat in the valve body, the disk seat falls into inflow chamber and outflow chamber with the runner, the intracavity of effluenting is equipped with the valve rod, the inflow intracavity is equipped with and is connected and cooperates the disk seat to form sealed case with the valve rod, the intracavity of effluenting is equipped with the driving piece that drives the valve core and keeps away from the disk seat, works as the valve core supports mutually when the disk seat forms sealedly, the position that the case offseted in the position of disk seat or disk seat offseted in the case is equipped with first sealing washer, the position that the valve rod is located outflow intracavity portion is equipped with down the gasket, the. The utility model has the advantages of it is following and effect: the utility model discloses small in size, low cost and life are longer, sealed effect is better.

Description

Self-sealing pressure reducing valve

Technical Field

The utility model relates to a valve, in particular to self sealss relief pressure valve.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction.

Some pipelines and parts can not bear higher pressure in the use process, in order to prevent the pipelines and the parts from being damaged, the pressure reducing valve is required to be installed in the pipelines, when the water outlet of the pipelines is closed, the flow is thoroughly sealed through the pressure reducing valve, the water outlet pressure is stabilized, and therefore the pipelines and the parts at the rear end of the pressure reducing valve are protected. The existing pressure reducing valve usually cuts off the flow in a hard sealing mode, but the hard sealing mode cannot achieve a good sealing effect, leakage is easy to occur, and therefore the whole water path and parts of the pressure reducing valve can be damaged. In addition, in order to enable fluid to drive the valve core to move better, the volume of the valve core is often set to be larger, so that the production cost of the pressure reducing valve is higher and the volume of the pressure reducing valve is larger.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a self sealss relief pressure valve, this self sealss relief pressure valve small in size, low cost and life are longer, sealed effect is better.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a self sealss relief pressure valve, includes the valve body, sets up in the runner of valve body and installs in the valve gap of valve body, be equipped with the disk seat in the valve body, the disk seat falls into inflow chamber and outflow chamber with the runner, the intracavity of effluenting is equipped with the valve rod, the intracavity of effluenting is equipped with and is connected and cooperate the disk seat to form sealed case with the valve rod, the intracavity of effluenting is equipped with the driving piece that drives the valve core and keeps away from the disk seat, works as the valve core supports when the disk seat forms sealedly mutually, the case offsets in the position of disk seat or the position that the disk seat offseted in the case is equipped with first sealing washer, the position that the valve rod is located outflow intracavity portion.

By adopting the technical scheme, the fluid in the inflow cavity flows to the outflow cavity through the valve seat, when the pressure in the inflow cavity is greater than the pressure in the outflow cavity, the impact force generated by the fluid flowing through the valve seat and the pressure act on the lower gasket together, so that the valve rod can drive the valve core to move towards the valve seat to realize sealing, the flow is thoroughly sealed, the water pressure is stabilized, and the purpose of pressure reduction is achieved. When the pressure in the outflow cavity is gradually greater than the pressure in the inflow cavity, the driving piece drives the valve rod to drive the valve core to move back to the valve seat, and therefore the conduction of the flow channel is achieved. The soft seal between case and the disk seat is realized through setting up of first sealing washer, prevents that both from causing mutual wearing and tearing at the sealed in-process that offsets to the sealed effect and the life of relief pressure valve have been promoted. The valve core is driven by the lower gasket, so that the valve core can be accurately controlled on the premise of not increasing the volume of the valve core, and the pressure reducing valve is smaller in size and lower in cost.

Further setting the following steps: the one side of lower gasket orientation disk seat is equipped with inside sunken recess, the recess encircles and forms an annular in the valve rod centre of a circle around, the position that the chamber wall of effluenting is close to the disk seat is equipped with the lug that prevents the sealed disk seat of lower gasket.

Through adopting above-mentioned technical scheme, the setting up of recess makes the fluid can form more concentrated atress on the gasket down to the impact of gasket down for the realization that cooperation between gasket and the recess can be better is to the drive of case down. The setting of lug prevents down that the gasket from sealing the disk seat under the effect of driving piece for guarantee the circulation of runner.

Further setting the following steps: the inner wall of the inflow cavity is provided with a guide sliding groove, and the valve core is in sliding fit with the guide sliding groove and used for guiding the valve core to move towards the valve seat.

Through adopting above-mentioned technical scheme, the cooperation between guide spout and the case is used for guiding the case and removes to promote the removal precision of case, ensure to realize more stable cooperation between case and the disk seat.

Further setting the following steps: be equipped with the diaphragm that extends into between valve body and the valve gap on the valve rod, the diaphragm will flow the sealed separation of chamber and become to be located the last cavity between diaphragm and the valve gap and be located the lower cavity between valve body and the diaphragm, the export intercommunication of cavity and runner down, the gasket is located the cavity of resorption, the driving piece is located the cavity of resorption down, be equipped with the first pressure balance hole of cavity and external world on the valve gap in the intercommunication.

Through adopting above-mentioned technical scheme, the setting up of diaphragm realizes the sealed separation between driving piece and the fluid for fluid can not take place the contact with the driving piece, thereby prolongs the life of driving piece.

Further setting the following steps: the valve rod is located the position that lower gasket is close to the disk seat and is equipped with the locating piece, lower gasket cover is located valve rod, diaphragm cover and is located the valve rod and with it sealed cooperation, the valve rod is located the diaphragm and is equipped with the nut that drive diaphragm and lower gasket support tightly to be located the locating piece for the opposite side of lower gasket.

Through adopting above-mentioned technical scheme, gasket, diaphragm lie in the convenient equipment on the valve rod down in the cooperation realization between nut and the locating piece, promote workman's packaging efficiency.

Further setting the following steps: the driving piece comprises a spring, an upper gasket which is pressed, held and fixed by the nut and used for positioning the spring is arranged between the nut and the diaphragm, the spring is sleeved on the valve rod, one end of the spring abuts against the upper gasket, and a limiting block which extends into an inner ring of the spring is arranged on the valve cover.

Through adopting above-mentioned technical scheme, go up the cooperation between gasket and the stopper and carry out spacing fixed to the both ends of spring, make the spring can apply more stable drive power to the valve rod.

Further setting the following steps: the valve comprises a valve body and a valve cover, and is characterized in that a first mounting groove is formed between the valve body and the valve cover, a diaphragm extends into the first mounting groove, an annular first sealing bulge protruding outwards is arranged at the position where the diaphragm abuts against the valve cover, and an annular second sealing bulge protruding outwards is arranged at the position where the diaphragm abuts against the first mounting groove.

Through adopting above-mentioned technical scheme, the setting of first mounting groove is spacing to the diaphragm for cooperation between the valve gap and the valve body between the two can realize better pressure to the diaphragm and hold fixedly. And better sealing between the diaphragm and the valve cover and between the diaphragm and the valve body is realized through the arrangement of the first sealing bulge and the second sealing bulge.

Further setting the following steps: and a second sealing ring is arranged between the side wall of the guide sliding groove and the valve core, and a second pressure balance hole for communicating the bottom of the guide sliding groove with the outflow cavity is formed in the valve core.

Through adopting above-mentioned technical scheme, the setting of second sealing washer prevents that fluid from entering into inside the guide spout to influence the cooperation relation that slides between guide spout and the case.

Further setting the following steps: and a second mounting groove for mounting the first sealing ring is formed in the valve core.

Through adopting above-mentioned technical scheme, the setting of second mounting groove realizes better fixed to first sealing washer.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses small in size, low cost and life are longer, sealed effect is better.

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a sectional view of the embodiment;

FIG. 3 is a partial schematic structural view of an embodiment;

fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve seat; 4. a flow inlet cavity; 5. an outflow cavity; 51. an upper chamber; 52. a lower chamber; 6. a valve stem; 7. a valve core; 8. a drive member; 9. a first seal ring; 10. a lower gasket; 11. a groove; 12. a guide chute; 13. a membrane; 14. positioning blocks; 15. a nut; 16. an upper gasket; 17. a limiting block; 18. a first mounting groove; 19. a first seal projection; 20. a second seal projection; 21. a second seal ring; 22. a second pressure balance hole; 23. a second mounting groove; 24. a first pressure balance hole; 25. and (4) a bump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, a self-sealing pressure reducing valve includes a valve body 1, a flow channel disposed in the valve body 1, and a valve cover 2 fixedly mounted on the valve body 1, wherein a valve seat 3 is integrally disposed in the valve body 1, and the flow channel is divided into a flow inlet chamber 4 and a flow outlet chamber 5 by the valve seat 3. A valve rod 6 is arranged in the outflow cavity 5, a valve core 7 which is integrally connected with the valve rod 6 and is matched with the valve seat 3 to form sealing is arranged in the inflow cavity 4, and the valve rod 6 and the valve seat 3 are coaxially arranged. The position that the periphery wall of the valve rod 6 is located inside the outflow cavity 5 is integrally provided with an annular positioning block 14, and a lower gasket 10, a diaphragm 13, an upper gasket 16 and a nut 15 are sequentially sleeved on the valve rod 6 from bottom to top along the axial direction of the valve rod 6 above the positioning block 14. The lower end face of the lower gasket 10 abuts against the upper end face of the positioning block 14, the diaphragm 13 is in sealing fit with the valve rod 6, the upper end face of the upper gasket 16 abuts against the lower end face of the nut 15, and the nut 15 is in threaded connection with the valve rod 6.

The peripheral wall of the diaphragm 13 extends into and is pressed between the valve body 1 and the valve cover 2, and the diaphragm 13 divides the outflow cavity 5 into an upper cavity 51 between the diaphragm 13 and the valve cover 2 and a lower cavity 52 between the valve body 1 and the diaphragm 13. The lower chamber 52 is communicated with an outflow port of the flow passage, and the lower gasket 10 is positioned in the lower chamber 52; go up and be equipped with driving piece 8 between last gasket 16 and the valve gap 2 in the cavity 51, driving piece 8 is the spring, and valve rod 6 and spring lower extreme offset are located to the spring housing and go up gasket 16, and an organic whole is provided with the stopper 17 that extends into the spring inner circle on the valve gap 2, sets up the first pressure balance hole 24 that communicates cavity 51 and external on the valve gap 2. The wall of the lower chamber 52 is integrally provided with a plurality of projections 25 at positions close to the valve seat 3 for preventing the lower gasket 10 from sealing the valve seat 3, and the projections 25 are arranged at intervals around the center of the valve rod 6. When the lower gasket 10 abuts against the projection 25, the valve seat 3 communicates with the lower chamber 52.

A first mounting groove 18 is formed in the position, abutted to the diaphragm 13, of the valve body 1, the diaphragm 13 extends into the first mounting groove 18, an annular first sealing bulge 19 protruding outwards is integrally arranged in the position, abutted to the valve cover 2, of the diaphragm 13, and an annular second sealing bulge 20 protruding outwards is integrally arranged in the position, abutted to the bottom of the first mounting groove 18, of the diaphragm 13. The orthographic projection position of the lower end face of the lower gasket 10 is overlapped with the valve seat 3, one face, facing the valve seat 3, of the lower gasket 10 is provided with an inward concave groove 11, and the groove 11 surrounds the circle center of the valve rod 6 to form an annular shape.

The second mounting groove 23 has been seted up to case 7 periphery wall, installs first sealing washer 9 in the second mounting groove 23, and when case 7 removed towards disk seat 3, first sealing washer 9 supported tightly in disk seat 3 and cooperation disk seat 3 forms sealedly. The inner wall of the inflow cavity 4 is provided with a guide sliding groove 12, the guide sliding groove 12 and the valve core 7 are coaxially arranged, and the valve core 7 and the guide sliding groove 12 are in sliding fit for guiding the valve core 7 to move towards the valve seat 3. A second sealing ring 21 is arranged between the side wall of the guide sliding groove 12 and the valve core 7, and a second pressure balance hole 22 communicating the bottom of the guide sliding groove 12 with the lower cavity 52 is formed in the valve core 7.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a self sealss relief pressure valve, includes valve body (1), sets up in the runner of valve body (1) and installs in valve gap (2) of valve body (1), be equipped with disk seat (3) in valve body (1), disk seat (3) fall into inflow chamber (4) and outflow chamber (5) with the runner, be equipped with valve rod (6) in outflow chamber (5), be equipped with in inflow chamber (4) and be connected and cooperate disk seat (3) to form sealed case (7) with valve rod (6), be equipped with driving piece (8) that disk seat (3) were kept away from to drive valve core (7) in outflow chamber (5), its characterized in that: when the valve core (7) abuts against the valve seat (3) to form sealing, a first sealing ring (9) is arranged at the position where the valve core (7) abuts against the valve seat (3) or the position where the valve seat (3) abuts against the valve core (7), a lower gasket (10) is arranged at the position, located inside the outflow cavity (5), of the valve rod (6), and one surface, facing the valve seat (3), of the lower gasket (10) corresponds to the valve seat (3).

2. A self-sealing pressure relief valve as claimed in claim 1, wherein: gasket (10) is equipped with inside sunken recess (11) down towards the one side of disk seat (3), recess (11) encircle around forming an annular in valve rod (6) centre of a circle, outflow chamber (5) wall is close to the position of disk seat (3) and is equipped with lug (25) that prevent gasket (10) sealed disk seat (3) down.

3. A self-sealing pressure relief valve as claimed in claim 1, wherein: the inner wall of the inflow cavity (4) is provided with a guide sliding groove (12), and the valve core (7) is in sliding fit with the guide sliding groove (12) and used for guiding the valve core (7) to move towards the valve seat (3).

4. A self-sealing pressure relief valve as claimed in claim 1, wherein: be equipped with diaphragm (13) that extends into between valve body (1) and valve gap (2) on valve rod (6), diaphragm (13) become last cavity (51) that is located between diaphragm (13) and valve gap (2) and lower cavity (52) that is located between valve body (1) and diaphragm (13) with efflux chamber (5) sealed partition, cavity (52) and the outflowing port intercommunication of runner down, gasket (10) are located down cavity (52) in, driving piece (8) are located cavity (51) down, be equipped with on valve gap (2) and communicate last cavity (51) and external first pressure balance hole (24).

5. The self sealing pressure relief valve of claim 4, wherein: the valve rod (6) is located the position that lower gasket (10) is close to disk seat (3) and is equipped with locating piece (14), valve rod (6) is located in lower gasket (10) cover, and valve rod (6) and sealed cooperation with it are located in diaphragm (13) cover, valve rod (6) is located the opposite side that diaphragm (13) is located lower gasket (10) and is equipped with drive diaphragm (13) and lower gasket (10) and support nut (15) of tightly locating piece (14).

6. The self sealing pressure relief valve of claim 5, wherein: the driving piece (8) comprises a spring, an upper gasket (16) which is pressed and fixed by the nut (15) and used for positioning the spring is arranged between the nut (15) and the diaphragm (13), the valve rod (6) is sleeved with the spring, one end of the spring is abutted to the upper gasket (16), and a limiting block (17) extending into an inner ring of the spring is arranged on the valve cover (2).

7. The self sealing pressure relief valve of claim 4, wherein: be equipped with first mounting groove (18) between valve body (1) and valve gap (2), diaphragm (13) extend into first mounting groove (18), diaphragm (13) are supported in the position of valve gap (2) and are equipped with outside convex annular first sealed protruding (19), diaphragm (13) are supported in the position of first mounting groove (18) and are equipped with outside convex annular second sealed protruding (20).

8. A self-sealing pressure relief valve as claimed in claim 3, wherein: a second sealing ring (21) is arranged between the side wall of the guide sliding groove (12) and the valve core (7), and a second pressure balance hole (22) for communicating the bottom of the guide sliding groove (12) with the outflow cavity (5) is formed in the valve core (7).

9. A self-sealing pressure relief valve as claimed in claim 1, wherein: and a second mounting groove (23) for mounting the first sealing ring (9) is formed in the valve core (7).