CN219062555U - Valve cavity sealing structure and safety valve - Google Patents
Valve cavity sealing structure and safety valve Download PDFInfo
- Publication number
- CN219062555U CN219062555U CN202222572451.5U CN202222572451U CN219062555U CN 219062555 U CN219062555 U CN 219062555U CN 202222572451 U CN202222572451 U CN 202222572451U CN 219062555 U CN219062555 U CN 219062555U
- Authority
- CN
- China
- Prior art keywords
- sealing
- valve
- valve body
- air inlet
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of safety valves, and particularly relates to a valve cavity sealing structure and a safety valve, which comprise a valve body, wherein a valve seat is integrally formed at the top of the valve body, a valve rod is movably inserted into an inner cavity of the valve seat, the bottom of the valve rod extends to the inner cavity of the valve body, the bottom of the valve rod is connected with a sealing mechanism, the sealing mechanism comprises a sealing pressing cap, a sealing sleeve and a sealing top pad, the sealing pressing cap is connected to the bottom of the valve rod, the sealing pressing cap and the valve rod are integrally formed, the inner cavity of the sealing pressing cap is of a hollow structure, and the sealing sleeve is arranged in the inner cavity of the sealing pressing cap; the sealing cap inner cavity is provided with the sealing sleeve, the sealing cap can be attached to the outer wall of the air inlet end after being pressed, and meanwhile, the sealing top pad is attached to the sealing bottom pad on the surface of the supporting disc, the sealing cap inner cavity can be sealed at the side wall and the bottom of the connecting part of the air inlet end and the sealing cap, the area of the connecting part of the air inlet end and the sealing cap can be improved, and accordingly the sealing performance is improved.
Description
Technical Field
The utility model relates to the technical field of safety valves, in particular to a valve cavity sealing structure and a safety valve.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The safety valve belongs to automatic valves, and is mainly used for boilers, pressure vessels and pipelines, and the control pressure does not exceed a specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation. The relief valve must be pressure tested for use.
When the sealing mechanism of the inner cavity of the existing safety valve is used for sealing, the sealing mechanism is only used for sealing by extruding an upper sealing gasket and a lower sealing gasket, the contact area between the sealing gaskets is small, so that the sealing effect of the joint is poor, and the sealing structure and the safety valve of the valve cavity are provided for solving the problems.
Disclosure of Invention
Object of the utility model
In order to solve the technical problems in the background art, the utility model provides a valve cavity sealing structure and a safety valve, wherein a sealing sleeve is arranged in an inner cavity of a sealing pressing cap, the sealing pressing cap can be attached to the outer wall of an air inlet end after being pressed, meanwhile, a sealing top pad is attached to a sealing bottom pad on the surface of a supporting disc, the sealing top pad can be sealed on the side wall and the bottom of the joint of the air inlet end and the sealing pressing cap, and the area of the joint of the air inlet end and the sealing pressing cap can be increased, so that the sealing performance is improved.
(II) technical scheme
In order to solve the technical problems, the first aspect of the utility model provides a valve cavity sealing structure, which comprises a valve body, wherein a valve seat is integrally formed at the top of the valve body, a valve rod is movably inserted into an inner cavity of the valve seat, the bottom of the valve rod extends to the inner cavity of the valve body, the bottom of the valve rod is connected with a sealing mechanism, the sealing mechanism comprises a sealing pressing cap, a sealing sleeve and a sealing top pad, the sealing pressing cap is connected to the bottom of the valve rod, the sealing pressing cap and the valve rod are integrally formed, the inner cavity of the sealing pressing cap is of a hollow structure, the sealing sleeve is arranged in the inner cavity of the sealing pressing cap, and the sealing top pad is integrally formed at the bottom of the sealing sleeve.
Preferably, the surface of the valve seat is provided with an observation through hole in a penetrating mode, and a sealing ring is arranged at the joint of the valve rod and the valve body.
Preferably, the top of the valve rod is in threaded connection with an adjusting screw rod, limiting plates are welded on the surfaces of the adjusting screw rod and the valve rod, and pressure regulating springs are arranged between the two groups of limiting plates.
Preferably, the air inlet end at the bottom of the valve body inner cavity extends to the valve body inner cavity.
Preferably, a supporting disc is arranged on the outer wall of the top of the air inlet end, and a sealing bottom pad is arranged on the surface of the supporting disc.
Preferably, the top of the valve seat is provided with a gear box, the inner cavity of the gear box is provided with a worm wheel, the worm wheel is connected with the top of the adjusting screw rod, and one side of the worm wheel is connected with a worm in a meshed manner.
The second aspect of the utility model provides a safety valve, which comprises the valve cavity sealing structure, and further comprises an air inlet and an air outlet, wherein the air inlet is arranged at the bottom of the valve body, and the air outlet is arranged on the side wall of the valve body.
The technical scheme of the utility model has the following beneficial technical effects:
1. according to the utility model, the sealing sleeve is arranged in the inner cavity of the sealing press cap, the sealing sleeve can be attached to the outer wall of the air inlet end after the sealing press cap is pressed, meanwhile, the sealing top pad is attached to the sealing bottom pad on the surface of the supporting disc, the side wall and the bottom of the joint of the air inlet end and the sealing press cap can be sealed, and the tightness of the joint of the air inlet end and the sealing press cap can be improved.
2. According to the utility model, the worm is rotated, the worm drives the adjusting screw rod to rotate through the worm wheel, the adjusting screw rod can compress or release the adjusting spring through the limiting disc under the action of the surface threads, the rotation of the adjusting screw rod can be more labor-saving through the mutual matching of the worm wheel and the worm, and meanwhile, the worm wheel and the worm mutually match to have a self-locking function, so that the stability of the mounting valve in use can be improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
fig. 3 is an exploded view of the seal mechanism of the present utility model.
Reference numerals:
1. a valve body; 2. an air inlet; 3. an air outlet; 4. a valve seat; 5. a sealing mechanism; 51. a support plate; 52. sealing the bottom pad; 53. sealing and pressing the cap; 54. sealing sleeve; 55. sealing the top pad; 6. a valve stem; 7. adjusting a screw rod; 8. a limiting disc; 9. a gear box; 10. a worm; 11. a worm wheel; 12. and (3) sealing rings.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
As shown in fig. 1-3, the valve cavity sealing structure provided by the first aspect of the present utility model comprises a valve body 1, a valve seat 4 is integrally formed at the top of the valve body 1, a valve rod 6 is movably inserted into an inner cavity of the valve seat 4, the bottom of the valve rod 6 extends to the inner cavity of the valve body 1, the bottom of the valve rod 6 is connected with a sealing mechanism 5, the sealing mechanism 5 comprises a sealing pressing cap 53, a sealing sleeve 54 and a sealing top pad 55, the sealing pressing cap 53 is connected to the bottom of the valve rod 6, the sealing pressing cap 53 and the valve rod 6 are integrally formed, the inner cavity of the sealing pressing cap 53 is of a hollow structure, the sealing sleeve 54 is arranged in the inner cavity of the sealing pressing cap 53, and the sealing top pad 55 is integrally formed at the bottom of the sealing sleeve 54.
The pressure regulating spring applies downward pressure to the limit disc 8 on the valve rod 6, so that the sealing pressure cap 53 in the sealing mechanism 5 can be pressed on the air inlet end, the sealing sleeve 54 is arranged in the inner cavity of the sealing pressure cap 53, the sealing pressure cap 53 can be attached to the outer wall of the air inlet end after being pressed, meanwhile, the sealing top pad 55 and the sealing bottom pad 52 on the surface of the support disc 51 are attached together, the side wall and the bottom of the joint of the air inlet end and the sealing pressure cap 53 can be sealed, the tightness of the joint of the air inlet end and the sealing pressure cap 53 can be improved, when the air pressure is larger than a set value, the air pressure jacks up the sealing pressure cap 53 and compresses the pressure regulating spring, air enters the valve body 1 and is discharged through the air outlet 3, and after the air pressure in the air inlet 2 is reduced, the sealing pressure cap 53 can seal the air inlet end under the action of the pressure regulating spring.
In this embodiment, as shown in fig. 1, an observation through hole is formed on the surface of the valve seat 4, and a sealing ring 12 is disposed at the connection position between the valve rod 6 and the valve body 1.
The compression condition of the pressure regulating spring can be observed through the observation through hole, and the sealing ring 12 can seal the joint of the valve rod 6 and the valve body 1.
In this embodiment, as shown in fig. 2, an adjusting screw rod 7 is screwed on the top of the valve rod 6, limiting plates 8 are welded on the surfaces of the adjusting screw rod 7 and the valve rod 6, and pressure regulating springs are arranged between the two groups of limiting plates 8.
It should be noted that, through two sets of limiting plates 8, the two ends of the pressure regulating spring can be limited, and through rotating the adjusting screw rod 7, the adjusting screw rod 7 can compress the pressure regulating spring under the action of surface threads, so as to realize the adjustment of gas pressure.
In this embodiment, as shown in fig. 2, an air inlet end at the bottom of the inner cavity of the valve body 1 extends to the inner cavity of the valve body 1, a supporting disc 51 is arranged on the top outer wall of the air inlet end, and a sealing bottom pad 52 is arranged on the surface of the supporting disc 51.
The bottom gasket 52 may be fixed by the support plate 51, and the sealing performance of the valve chamber may be improved by attaching the bottom gasket 52 and the top gasket 55 together.
In this embodiment, as shown in fig. 2, a gear box 9 is disposed at the top of the valve seat 4, a worm wheel 11 is disposed in an inner cavity of the gear box 9, the worm wheel 11 is connected with the top of the adjusting screw rod 7, and a worm 10 is engaged and connected to one side of the worm wheel 11.
It should be noted that, through rotating worm 10, worm 10 drives accommodate the lead screw 7 through worm wheel 11 and rotates, accommodate the lead screw 7 and can compress or release the pressure regulating spring through spacing dish 8 under the effect of surface screw thread, can more laborsaving through worm wheel 11 and worm 10 mutually supporting the rotation of accommodate the lead screw 7, and worm wheel 11 and worm 10 mutually support simultaneously possess the self-locking function, can promote the stability of installation valve when using.
The second aspect of the utility model provides a safety valve, which comprises the valve cavity sealing structure;
the valve further comprises an air inlet 2 and an air outlet 3, wherein the air inlet 2 is arranged at the bottom of the valve body 1, and the air outlet 3 is arranged on the side wall of the valve body 1.
It should be noted that, the valve body 1 may be connected to a pipe through flanges on the air inlet 2 and the air outlet 3, and the air enters the inner cavity of the valve body 1 through the air inlet 2 and is discharged through the air outlet 3.
The working principle and the using flow of the utility model are as follows: the valve body 1 is connected with a pipeline through the air inlet 2 and the air outlet 3, air is injected into the air inlet end of the inner cavity of the air inlet body 1 through the air inlet 2, downward pressure is applied to the limit disc 8 on the valve rod 6 through the pressure regulating spring, so that the sealing pressure cap 53 in the sealing mechanism 5 can be pressed on the air inlet end, the inner cavity of the sealing pressure cap 53 is provided with the sealing sleeve 54, the sealing pressure cap 53 can be attached to the outer wall of the air inlet end after being pressed, meanwhile, the sealing top pad 55 and the sealing bottom pad 52 on the surface of the supporting disc 51 are attached together, the side wall and the bottom of the joint of the air inlet end and the sealing pressure cap 53 can be sealed, the sealing performance of the joint of the air inlet end and the sealing pressure cap 53 can be improved, when the air pressure is larger than a set value, the air pressure is jacked up by the sealing pressure cap 53, the pressure regulating spring is compressed, the air enters the valve body 1 and is discharged through the air outlet 3, and after the air pressure in the air inlet 2 is reduced, the sealing pressure cap 53 can seal the air inlet end under the pressure regulating spring.
It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (7)
1. The utility model provides a valve pocket seal structure, includes valve body (1), its characterized in that, valve body (1) top integrated into one piece has disk seat (4), disk seat (4) inner chamber activity is pegged graft and is had valve rod (6), valve rod (6) bottom extends to valve body (1) inner chamber, and valve rod (6) bottom is connected with sealing mechanism (5), sealing mechanism (5) are including sealing pressure cap (53), seal cover (54) and sealing top pad (55), sealing pressure cap (53) connect in valve rod (6) bottom, sealing pressure cap (53) and valve rod (6) are integrated into one piece, and sealing pressure cap (53) inner chamber is hollow structure, seal cover (54) are established at sealing pressure cap (53) inner chamber, sealing top pad (55) integrated into one piece is in seal cover (54) bottom.
2. The valve cavity sealing structure according to claim 1, wherein an observation through hole is formed in the surface of the valve seat (4), and a sealing ring (12) is arranged at the joint of the valve rod (6) and the valve body (1).
3. The valve cavity sealing structure according to claim 1, wherein an adjusting screw rod (7) is connected to the top of the valve rod (6) in a threaded mode, limiting plates (8) are welded on the surfaces of the adjusting screw rod (7) and the valve rod (6), and pressure regulating springs are arranged between the two groups of limiting plates (8).
4. A valve cavity sealing structure according to claim 1, characterized in that the inlet end of the bottom of the inner cavity of the valve body (1) extends to the inner cavity of the valve body (1).
5. The valve cavity sealing structure according to claim 4, wherein a supporting disc (51) is arranged on the top outer wall of the air inlet end, and a sealing bottom gasket (52) is arranged on the surface of the supporting disc (51).
6. The valve cavity sealing structure according to claim 1, wherein a gear box (9) is arranged at the top of the valve seat (4), a worm wheel (11) is arranged in an inner cavity of the gear box (9), the worm wheel (11) is connected with the top of the adjusting screw rod (7), and a worm (10) is connected to one side of the worm wheel (11) in a meshed mode.
7. The safety valve is characterized by comprising the valve cavity sealing structure according to any one of claims 1-6, and further comprising an air inlet (2) and an air outlet (3), wherein the air inlet (2) is arranged at the bottom of the valve body (1), and the air outlet (3) is arranged on the side wall of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222572451.5U CN219062555U (en) | 2022-09-27 | 2022-09-27 | Valve cavity sealing structure and safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222572451.5U CN219062555U (en) | 2022-09-27 | 2022-09-27 | Valve cavity sealing structure and safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219062555U true CN219062555U (en) | 2023-05-23 |
Family
ID=86346397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222572451.5U Active CN219062555U (en) | 2022-09-27 | 2022-09-27 | Valve cavity sealing structure and safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219062555U (en) |
-
2022
- 2022-09-27 CN CN202222572451.5U patent/CN219062555U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208687000U (en) | A kind of two way seal floating hard seal ball valve spring is against pressure and structure | |
| CN219062555U (en) | Valve cavity sealing structure and safety valve | |
| CN211010130U (en) | Upper sealing structure of low-temperature valve stuffing box | |
| CN110566800A (en) | Lever floating ball type drain valve with piston exhaust device | |
| CN208331361U (en) | A kind of petroleum pipeline explosion relief valve | |
| CN216200912U (en) | New forms of energy lithium cell box relief valve | |
| CN208381452U (en) | A kind of cylinder valve pneumatic actuator component | |
| CN113653807A (en) | Electric vacuum regulating valve for uranium concentration plant | |
| CN1089414C (en) | New-type safety valve | |
| CN109488796B (en) | High-pressure large-discharge safety relief valve | |
| CN207999639U (en) | Grease pouring valve | |
| CN219177021U (en) | Gas self-closing valve | |
| CN206846013U (en) | Mud special safety valve | |
| CN220416304U (en) | Novel combination valve of ball valve and pressure reducing valve | |
| CN220302847U (en) | Spring type hydrogen explosion venting valve | |
| CN116066582B (en) | Automatic pressure relief single valve seat gate valve | |
| CN216354320U (en) | Adjustable safety relief valve, hydrogen supply device and fuel cell system | |
| CN219198245U (en) | Miniature high-pressure liquid path overflow valve | |
| CN218152401U (en) | High-performance double-eccentric ceramic valve seat | |
| CN219655314U (en) | Hydrophobic ball valve | |
| CN220134639U (en) | Self-pressure-releasing stop valve | |
| CN212718133U (en) | Adjusting ball valve | |
| CN109958802B (en) | Low-pressure fine-tuning built-in dead weight type safety valve | |
| CN219673414U (en) | Fluoroplastic soft sealing type spring type direct load type safety valve | |
| CN216447490U (en) | Pressure reducing valve comprising vacuum breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |