CN211145487U - Pressure relief device of pressure relief valve - Google Patents
Pressure relief device of pressure relief valve Download PDFInfo
- Publication number
- CN211145487U CN211145487U CN201922277356.0U CN201922277356U CN211145487U CN 211145487 U CN211145487 U CN 211145487U CN 201922277356 U CN201922277356 U CN 201922277356U CN 211145487 U CN211145487 U CN 211145487U
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- China
- Prior art keywords
- pressure relief
- hole
- valve core
- relief valve
- piston
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure relief device of a pressure relief valve, which comprises a valve body, wherein a pressure relief hole communicated with the interior of the valve body is arranged on the valve body, and a pressure relief device is arranged in the pressure relief hole; the pressure relief device comprises a fixing piece, a pressure relief spring, a pressure relief valve core and a pressure relief valve core seat, wherein the fixing piece is fixed on the inner wall of the pressure relief hole, the pressure relief valve core seat is arranged below the fixing piece and connected with the fixing piece through the pressure relief spring, the pressure relief valve core is arranged below the pressure relief valve core seat and arranged at the bottom of the pressure relief hole, an inner conical surface for containing the pressure relief valve core is arranged at the bottom of the pressure relief hole, and the surface of the pressure relief valve core, which is in contact with the inner conical surface, is; the fixing piece is provided with an exhaust hole. The utility model has the characteristics of simple structure, reasonable in design, release gas that can be large-traffic realizes quick pressure release, the security is reliable.
Description
Technical Field
The utility model belongs to the technical field of the valve, concretely relates to pressure relief device of relief pressure valve.
Background
The compressed oxygen self-rescuer is provided with a pressure reducing valve, and the pressure reducing valve is provided with a pressure relief device, so that the valve is prevented from quickly releasing gas under the condition of failure, and the safety is ensured. However, the existing pressure relief device has the disadvantages of complex structure, slow reaction, slow gas release and poor safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to above-mentioned defect, provide a pressure relief device of relief pressure valve, simple structure, reasonable in design can large-traffic release gas, realizes quick pressure release, the security is reliable.
The utility model provides a technical scheme that its technical problem adopted as follows:
a pressure relief device of a pressure relief valve comprises a valve body, wherein a pressure relief hole communicated with the interior of the valve body is formed in the valve body, and a pressure relief device is arranged in the pressure relief hole; the pressure relief device comprises a fixing piece, a pressure relief spring, a pressure relief valve core and a pressure relief valve core seat, wherein the fixing piece is fixed on the inner wall of the pressure relief hole, the pressure relief valve core seat is arranged below the fixing piece and connected with the fixing piece through the pressure relief spring, the pressure relief valve core is arranged below the pressure relief valve core seat and arranged at the bottom of the pressure relief hole, an inner conical surface for containing the pressure relief valve core is arranged at the bottom of the pressure relief hole, and the surface of the pressure relief valve core, which is in contact with the inner conical surface, is; the fixing piece is provided with an exhaust hole.
Further, the valve body comprises a housing, a piston and a spring; the piston and the spring are arranged in the shell, the piston is connected with the shell through the spring, an insertion hole used for accommodating the lower end of the piston is formed in the shell, a gap is formed between the piston and the insertion hole, the piston is connected with the insertion hole through a first sealing element, the upper end of the piston is connected with the inner wall of the shell through a second sealing element, and an upper cavity and a lower cavity which are independent of each other are formed in the shell through the piston; the pressure relief hole is communicated with the upper cavity.
Furthermore, an air inlet communicated with the jack is formed in the outer portion of the shell, an air guide hole communicated with the upper cavity is formed in the axis of the piston, a side hole communicated with the air guide hole is formed in the surface of the piston, and the side hole is located below the first sealing element.
Further, a filter is arranged in the air inlet.
Further, the pressure relief valve core seat is of a polygonal surface structure.
The utility model has the advantages that:
(1) the pressure relief hole realizes the pressure relief of the valve body, thereby ensuring the normal pressure in the valve body and ensuring the safety; realize opening and airtight of pressure release hole through pressure relief device, when the atmospheric pressure in the valve was too high, atmospheric pressure can see through pressure release hole jack-up pressure release case to compress the pressure release spring, until producing the gap between pressure release case and the pressure release hole, the gaseous flow from this gap in the valve body like this realizes the pressure release, simple structure, reasonable in design, the security is reliable.
(2) The utility model discloses be equipped with the inner conical surface that is used for holding pressure release case on the bottom in pressure release hole, it is sealed effectual.
(3) The utility model discloses well valve body's structural design is reasonable, and is simple firm, long service life.
(4) The utility model discloses a filter filters the impurity in the gas to guarantee the purity of oxygen.
(5) The utility model provides a pressure release valve core case is polygonal face structure, can realize large-traffic release gas to quick pressure release.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
wherein: the valve comprises a valve body 1, a shell 11, an inserting hole 111, an air inlet 112, an upper cavity 113, a lower cavity 114, a piston 12, an air guide hole 121, a spring 13, a filter 2, a first sealing element 3, a second sealing element 4, a pressure relief hole 5, a pressure relief device 6, a fixing piece 61, an exhaust hole 611, a pressure relief spring 62, a pressure relief valve core 63 and a pressure relief valve core seat 64.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The pressure relief device of the pressure relief valve shown in fig. 1 comprises a valve body 1, wherein the valve body 1 comprises a shell 11, a piston 12 and a spring 13; piston 12 and spring 13 all set up in shell 11, and shell 11 in this embodiment is integrative structure, ensures the stability of the relief pressure valve operating condition after leaving the factory, not by the artificial dismantlement, and structural strength is high moreover, and the shell adopts light-duty material, for long-time personal reserve personnel's burden reduction reach 60%. The piston 12 is connected to the housing 11 through a spring 13, the piston 12 in this embodiment is preferably T-shaped, the housing 11 is provided with an insertion hole 111 for receiving a lower end of the piston 12, and the housing 11 is provided with an air inlet 112 communicating with the insertion hole 111 at an outer portion thereof. A gap is formed between the piston 12 and the insertion hole 111, the piston 12 is connected with the insertion hole 111 through a first sealing element 3, the upper end of the piston 12 is connected with the inner wall of the shell 11 through a second sealing element 4, the first sealing element 3 and the second sealing element 4 in the embodiment are preferably O-shaped rings, and an upper cavity 113 and a lower cavity 114 which are independent of each other are formed in the shell 11 through the piston 12 and the first sealing element 3; an air guide hole 121 communicated with the upper cavity 113 is arranged on the axis of the piston 12, a side hole 122 communicated with the air guide hole 121 is arranged on the surface of the piston 12, the side hole 122 is positioned below the first sealing element 3, and the air inlet 112 and the lower cavity 114 are mutually isolated through the second sealing element 4, so that air can not enter the lower cavity and directly flows into the upper cavity from the side hole through the air guide hole, and the continuous and effective supply of oxygen in the compressed oxygen self-rescuer is ensured. In order to ensure the purity of oxygen without impurities, a filter 2 is arranged in the air inlet 112, so that the safety of workers is ensured.
The valve body 1 is provided with a pressure relief hole 5 communicated with the upper cavity 113, and a pressure relief device 6 is arranged in the pressure relief hole 5; pressure relief device 6 includes stationary blade 61, pressure relief spring 62, pressure relief valve core 63 and pressure relief valve core seat 64, and stationary blade 61 is fixed on the inner wall of pressure relief hole 5, and pressure relief valve core seat 64 sets up in the below of stationary blade 61 and links to each other with stationary blade 61 through pressure relief spring 62, and pressure relief valve core 63 is in the below of pressure relief valve core seat 64 and sets up in the bottom of pressure relief hole 5, and pressure relief valve core seat 64 is the polygonal surface structure, for example hexahedron to ensure that gas passes through fast, the flow is big. The inner conical surface for containing the pressure relief valve core 63 is arranged at the bottom of the pressure relief hole 5, the pressure relief valve core can be tightly pressed at the bottom of the pressure relief hole under the action of the pressure relief spring so as to ensure that the bottom of the pressure relief hole is sealed, the pressure relief valve core can be conveniently ejected by air pressure, the surface of the pressure relief valve core, which is in contact with the inner conical surface, is spherical, can be perfectly attached to the inner conical surface, and the sealing performance is reliable; the fixing piece 61 is provided with an exhaust hole 611 for exhausting air outwards and stabilizing air pressure in the valve body, the pressure relief valve core seat is provided with a clamping groove for accommodating the pressure relief valve core, and the pressure relief valve core is fixedly connected with the pressure relief valve core seat through the clamping groove.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (5)
1. A pressure relief device of a pressure relief valve, characterized by: the valve comprises a valve body, wherein a pressure relief hole communicated with the interior of the valve body is formed in the valve body, and a pressure relief device is arranged in the pressure relief hole;
the pressure relief device comprises a fixing piece, a pressure relief spring, a pressure relief valve core and a pressure relief valve core seat, wherein the fixing piece is fixed on the inner wall of the pressure relief hole, the pressure relief valve core seat is arranged below the fixing piece and connected with the fixing piece through the pressure relief spring, the pressure relief valve core is arranged below the pressure relief valve core seat and arranged at the bottom of the pressure relief hole, an inner conical surface for containing the pressure relief valve core is arranged at the bottom of the pressure relief hole, and the surface of the pressure relief valve core, which is in contact with the inner conical surface, is; the fixing piece is provided with an exhaust hole.
2. The pressure relief device of a pressure relief valve according to claim 1, wherein: the pressure relief valve core seat is of a polygonal surface structure.
3. The pressure relief device of a pressure relief valve according to claim 1, wherein: the valve body comprises a shell, a piston and a spring; the piston and the spring are arranged in the shell, the piston is connected with the shell through the spring, an insertion hole used for accommodating the lower end of the piston is formed in the shell, a gap is formed between the piston and the insertion hole, the piston is connected with the insertion hole through a first sealing element, the upper end of the piston is connected with the inner wall of the shell through a second sealing element, and an upper cavity and a lower cavity which are independent of each other are formed in the shell through the piston; the pressure relief hole is communicated with the upper cavity.
4. A pressure relief device for a pressure relief valve according to claim 3, wherein: an air inlet communicated with the jack is formed in the outer portion of the shell, an air guide hole communicated with the upper cavity is formed in the axis of the piston, a side hole communicated with the air guide hole is formed in the surface of the piston, and the side hole is located below the first sealing element.
5. The pressure relief device of a pressure relief valve according to claim 4, wherein: and a filter is arranged in the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277356.0U CN211145487U (en) | 2019-12-17 | 2019-12-17 | Pressure relief device of pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277356.0U CN211145487U (en) | 2019-12-17 | 2019-12-17 | Pressure relief device of pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211145487U true CN211145487U (en) | 2020-07-31 |
Family
ID=71775223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922277356.0U Expired - Fee Related CN211145487U (en) | 2019-12-17 | 2019-12-17 | Pressure relief device of pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211145487U (en) |
-
2019
- 2019-12-17 CN CN201922277356.0U patent/CN211145487U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200731 Termination date: 20201217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |