CN219177021U - Gas self-closing valve - Google Patents
Gas self-closing valve Download PDFInfo
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- CN219177021U CN219177021U CN202223303331.1U CN202223303331U CN219177021U CN 219177021 U CN219177021 U CN 219177021U CN 202223303331 U CN202223303331 U CN 202223303331U CN 219177021 U CN219177021 U CN 219177021U
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- valve
- self
- closing
- main valve
- seat
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Abstract
The utility model discloses a gas self-closing valve, which comprises a main valve body, wherein the top of the main valve body is fixedly connected with a valve cover, one side of the main valve body is fixedly connected with a manual valve, the other end of the manual valve is provided with an air inlet connecting seat, and the other side of the main valve body is fixedly connected with an air outlet connecting seat; the center of the inner surface of the bottom of the main valve body is fixedly connected with a main valve seat, the center of the main valve seat is slidably provided with a self-closing valve core, and a leather membrane is arranged between the main valve body and a valve cover; the center of the bottom of the main valve body is fixedly connected with a low-pressure self-closing structure corresponding to the self-closing valve core, and a high-pressure self-closing structure is arranged between the self-closing valve core and the valve cover. The utility model designs the magnetic valve core self-closing structure, so that the structure is simpler, the situation that the valve cannot realize self-closing due to failure of the elastic piece of the traditional self-closing valve is avoided, and the safety performance is greatly improved.
Description
Technical Field
The utility model relates to the technical field of self-closing valves, in particular to a gas self-closing valve.
Background
The pipeline gas self-closing valve, abbreviated as self-closing valve, is generally installed on the pipeline of the low-pressure gas system, and when the gas supply pressure of the pipeline is under-pressure or over-pressure, the device which can be automatically closed and needs to be manually opened can be used without electricity or other external power.
The gas self-closing valve is installed at the joint of the tail end of a pipeline and a rubber pipe after the gas meter in the process of actual use, has a decompression self-closing function, can greatly reduce potential safety hazards, is quite wide in application, is provided with various different types of gas self-closing valves on the market at present, but the internal structure of most of the existing gas self-closing valves is relatively complex, various types of elastic reset structures are designed in most of the existing gas self-closing valves, the elastic force of elastic parts such as springs is greatly reduced after the elastic parts are continuously compressed for a long time, and then the valve cannot be automatically closed or reset, so that the self-closing valve cannot work easily under emergency conditions, and further certain potential safety hazards are caused.
It is therefore desirable to provide a gas self-closing valve that addresses the above-described issues.
Disclosure of Invention
The utility model aims to solve the technical problems that the internal structure of most existing gas self-closing valves is relatively complex, various elastic reset structures are designed in most cases, the elastic force of elastic parts such as springs is greatly reduced after the elastic parts are continuously pressed for a long time, and thus the valves cannot be self-closed or reset, and the self-closing valves cannot work easily under emergency conditions, and are further hidden in a certain safety.
In order to solve the technical problems, the utility model adopts a technical scheme that: the gas self-closing valve comprises a main valve body, wherein the top of the main valve body is fixedly connected with a valve cover, one side of the main valve body is fixedly connected with a manual valve, the other end of the manual valve is provided with an air inlet connecting seat, and the other side of the main valve body is fixedly connected with an air outlet connecting seat;
the center of the inner surface of the bottom of the main valve body is fixedly connected with a main valve seat, the center of the main valve seat is slidably provided with a self-closing valve core, and a leather membrane is arranged between the main valve body and a valve cover;
the center of the bottom of the main valve body is fixedly connected with a low-pressure self-closing structure corresponding to the self-closing valve core, and a high-pressure self-closing structure is arranged between the self-closing valve core and the valve cover;
the top end of the self-closing valve core is fixedly connected with a reset handle, and a connecting pipe communicated with the air outlet connecting seat is fixedly connected between the main valve seat and the inner wall of the main valve body.
The utility model is further provided with: the manual valve comprises a manual valve seat, and the top of the manual valve seat is connected with a spiral valve in a threaded manner.
Through the technical scheme, under emergency, the valve can be manually closed by screwing the spiral valve, so that the overall safety of the valve is improved.
The utility model is further provided with: an air inlet communicated with the manual valve seat is formed in the center of one side of the main valve body.
Through the technical scheme, natural gas in the gas pipeline connected with the gas inlet connecting seat can enter the main valve body through the manual valve seat.
The utility model is further provided with: the self-closing valve core comprises a metal valve core, a through vent hole is formed in the center of the metal valve core, and a valve rod is fixedly connected to the top end of the metal valve core.
Through the technical scheme, the metal valve core is slidably arranged at the center of the main valve seat, and can ascend or descend under the driving of the leather membrane under the condition that the air pressure in the valve body is overlarge or too low, so that the metal valve core can seal an air transmission hole in the main valve seat, and further the automatic closing of the valve is realized.
The utility model is further provided with: the metal valve core is limited in the center of the main valve seat in a sliding mode, and the top end of the valve rod penetrates through the leather membrane and the valve cover and extends towards the top of the valve rod.
Through the technical scheme, after the gas pressure in the main valve body is recovered to be normal, the metal valve core can be controlled to reset by pressing or carrying the valve rod, so that the normal operation of the self-closing valve is ensured.
The utility model is further provided with: the center of the main valve seat is provided with a gas transmission hole corresponding to the vent hole, and one end of the gas transmission hole is communicated with the connecting pipe.
The utility model is further provided with: the low-pressure self-closing structure comprises a bottom sealing seat, and a low-pressure adsorption magnet is fixedly connected to the bottom of the center of the bottom sealing seat.
Through above-mentioned technical scheme, when the internal gas pressure of main valve is too low, the degree of expansion of involucra can reduce, and then can drive the metal case through the valve rod and move down, after the metal case moves down certain height, low pressure adsorption magnet can adsorb the metal case voluntarily, and the solid part of upper segment of metal case can block up the main disk seat, and then realizes the self-closing of valve.
The utility model is further provided with: the bottom sealing seat is fixed at the bottom center of the main valve body, and a through hole corresponding to the metal valve core is formed in the bottom center of the main valve body.
The utility model is further provided with: the high-pressure self-closing structure comprises a sealing gasket and a metal ring, and a high-pressure adsorption magnet is fixedly connected to the center of the inner surface of the top of the valve cover.
Through above-mentioned technical scheme, when the internal gas pressure of main valve is too high, the degree of expansion of involucra can become big, and then can drive the metal case through the valve rod and reciprocate, after the metal case risees to certain height, high pressure adsorption magnet can automatic adsorption metal ring, and the solid part of the middle lower segment of metal case can block up the main disk seat, and then realizes the self-closing of valve.
The utility model is further provided with: the sealing gasket and the metal ring are both fixed on the outer wall of the metal valve core, and the sealing gasket and the metal ring clamp are fastened on the bottom of the leather membrane.
The beneficial effects of the utility model are as follows:
1. according to the utility model, by designing the magnetic valve core self-closing structure, the structure is simpler, the situation that the valve cannot realize self-closing due to failure of the elastic piece of the traditional self-closing valve is avoided, and the safety performance is greatly improved;
2. the utility model can ensure the automatic closing of the valve core under abnormal conditions by utilizing the high-pressure and low-pressure self-closing structures respectively through designing the magnetic valve core self-closing structure, and simultaneously, the simple structural design is also convenient for production, processing and manufacturing, the production and use cost is lower, and the maintenance is also convenient under the condition of failure.
Drawings
FIG. 1 is a first view angle block diagram of the present utility model;
FIG. 2 is a second view angle block diagram of the present utility model;
FIG. 3 is a front view of the present utility model;
fig. 4 is an internal cross-sectional view of the main valve body of the present utility model.
In the figure: 1. a main valve body; 2. a valve cover; 3. a manual valve; 301. a manual valve seat; 302. a screw valve; 4. an air inlet connecting seat; 5. an air outlet connecting seat; 6. a main valve seat; 7. a self-closing valve core; 701. a metal valve core; 702. a vent hole; 703. a valve stem; 8. a coating film; 9. a low pressure self-closing structure; 901. a bottom seal seat; 902. a low-pressure adsorption magnet; 10. a high pressure self-closing structure; 1001. a sealing gasket; 1002. a metal ring; 1003. a high-pressure adsorption magnet; 11. a reset handle; 12. and (5) connecting pipes.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1-4, a gas self-closing valve comprises a main valve body 1, wherein the top of the main valve body 1 is fixedly connected with a valve cover 2, one side of the main valve body 1 is fixedly connected with a manual valve 3, the other end of the manual valve 3 is provided with an air inlet connecting seat 4, the other side of the main valve body 1 is fixedly connected with an air outlet connecting seat 5, as shown in fig. 2, the manual valve 3 comprises a manual valve seat 301, the top of the manual valve seat 301 is in threaded connection with a spiral valve 302, and in an emergency, the valve can be manually closed by screwing the spiral valve 302, so that the overall safety of the valve is improved; an air inlet hole communicated with the manual valve seat 301 is formed in the center of one side of the main valve body 1, so that natural gas in a gas pipeline connected with the air inlet connecting seat 4 can enter the main valve body 1 through the manual valve seat 301;
the center of the inner surface of the bottom of the main valve body 1 is fixedly connected with a main valve seat 6, the center of the main valve seat 6 is provided with a gas transmission hole corresponding to the vent 702, one end of the gas transmission hole is communicated with a connecting pipe 12, the center of the main valve seat 6 is provided with a self-closing valve core 7 in a sliding manner, and a leather film 8 is arranged between the main valve body 1 and the valve cover 2;
as shown in fig. 4, the self-closing valve core 7 includes a metal valve core 701, a through vent hole 702 is formed in the center of the metal valve core 701, a valve rod 703 is fixedly connected to the top end of the metal valve core 701, the metal valve core 701 is slidably limited in the center of the main valve seat 6, the top end of the valve rod 703 penetrates through a membrane 8 and a valve cover 2 and extends towards the top of the membrane, after the internal gas pressure of the main valve body 1 is recovered to be normal, the metal valve core 701 can be controlled to reset by pressing or lifting the valve rod 703, so that the normal operation of the self-closing valve is ensured, and under the condition that the internal gas pressure of the valve body is too high or too low, the metal valve core 701 can rise or fall under the drive of the membrane 8, so that the metal valve core 701 can seal a gas transmission hole in the main valve seat 6, and further the automatic closing of the valve is realized;
as shown in fig. 4, the center of the bottom of the main valve body 1 is fixedly connected with a low-pressure self-closing structure 9 corresponding to the self-closing valve core 7, the low-pressure self-closing structure 9 comprises a bottom sealing seat 901, the bottom sealing seat 901 is fixed at the center of the bottom of the main valve body 1, a through hole corresponding to the metal valve core 701 is formed in the center of the bottom of the main valve body 1, the bottom of the center of the bottom sealing seat 901 is fixedly connected with a low-pressure adsorption magnet 902, when the gas pressure in the main valve body 1 is too low, the expansion degree of a coating 8 is reduced, the metal valve core 701 is driven to move downwards by a valve rod 703, after the metal valve core 701 moves downwards to a certain height, the metal valve core 701 is automatically adsorbed by the low-pressure adsorption magnet 902, the main valve seat 6 is blocked by the solid part at the middle-upper section of the metal valve core 701, and thus the self-closing of the valve is realized;
as shown in fig. 4, a high-pressure self-closing structure 10 is installed between a self-closing valve core 7 and a valve cover 2, the high-pressure self-closing structure 10 comprises a sealing gasket 1001 and a metal ring 1002, the sealing gasket 1001 and the metal ring 1002 are both fixed on the outer wall of the metal valve core 701, the sealing gasket 1001 and the metal ring 1002 are clamped and fastened at the bottom of a diaphragm 8, a high-pressure adsorption magnet 1003 is fixedly connected with the center of the inner surface of the top of the valve cover 2, when the internal pressure of a main valve body 1 is too high, the expansion degree of the diaphragm 8 is increased, and then the metal valve core 701 is driven to move upwards by a valve rod 703, after the metal valve core 701 rises to a certain height, the high-pressure adsorption magnet 1003 automatically adsorbs the metal ring 1002, and the middle-lower solid part of the metal valve core 701 seals up the main valve seat 6, so that the self-closing of the valve is realized;
the top end of the self-closing valve core 7 is fixedly connected with a reset handle 11, and a connecting pipe 12 communicated with the air outlet connecting seat 5 is fixedly connected between the main valve seat 6 and the inner wall of the main valve body 1.
When the valve is used, the valve body can be arranged at the joint of the tail end of a pipeline behind the gas meter and the rubber pipe, under the condition that the gas pressure in the main valve body 1 is normal, the expansion degree of the inner film 8 of the main valve body 1 is stable, at the moment, the vent hole 702 of the metal valve core 701 is communicated with the gas transmission hole of the main valve seat 6, the gas in the main valve body 1 can enter the gas outlet connecting seat 5 through the main valve seat 6 and the connecting pipe 12, so that the normal supply of the gas is ensured, when the gas pressure in the main valve body 1 is too low, the expansion degree of the film 8 can be reduced, the metal valve core 701 can be driven to move downwards through the valve rod 703, after the metal valve core 701 moves downwards to a certain height, the metal valve core 701 can be automatically adsorbed by the low-pressure adsorption magnet 902, the solid part of the upper section of the metal valve core 701 can seal the main valve seat 6, and the self-closing of the valve is realized; when the internal gas pressure of the main valve body 1 is too high, the expansion degree of the coating 8 is increased, and then the valve rod 703 drives the metal valve core 701 to move upwards, after the metal valve core 701 rises to a certain height, the high-pressure adsorption magnet 1003 automatically adsorbs the metal ring 1002, and the solid part of the middle lower section of the metal valve core 701 seals the main valve seat 6, so that the self-closing of the valve is realized; after the internal gas pressure of the main valve body 1 is recovered to be normal, the metal valve core 701 can be controlled to reset by pressing or carrying the valve rod 703, so that the normal operation of the self-closing valve is ensured.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a gas self-closing valve, includes main valve body (1), its characterized in that: the top of the main valve body (1) is fixedly connected with a valve cover (2), one side of the main valve body (1) is fixedly connected with a manual valve (3), the other end of the manual valve (3) is provided with an air inlet connecting seat (4), and the other side of the main valve body (1) is fixedly connected with an air outlet connecting seat (5);
the center of the inner surface of the bottom of the main valve body (1) is fixedly connected with a main valve seat (6), the center of the main valve seat (6) is provided with a self-closing valve core (7) in a sliding manner, and a coating film (8) is arranged between the main valve body (1) and the valve cover (2);
the center of the bottom of the main valve body (1) is fixedly connected with a low-pressure self-closing structure (9) corresponding to the self-closing valve core (7), and a high-pressure self-closing structure (10) is arranged between the self-closing valve core (7) and the valve cover (2);
the top end of the self-closing valve core (7) is fixedly connected with a reset handle (11), and a connecting pipe (12) communicated with the air outlet connecting seat (5) is fixedly connected between the main valve seat (6) and the inner wall of the main valve body (1).
2. The gas self-closing valve as recited in claim 1, wherein: the manual valve (3) comprises a manual valve seat (301), and a spiral valve (302) is connected to the top of the manual valve seat (301) in a threaded mode.
3. A gas self-closing valve as defined in claim 2, wherein: an air inlet communicated with the manual valve seat (301) is arranged in the center of one side of the main valve body (1).
4. The gas self-closing valve as recited in claim 1, wherein: the self-closing valve core (7) comprises a metal valve core (701), a through vent hole (702) is formed in the center of the metal valve core (701), and a valve rod (703) is fixedly connected to the top end of the metal valve core (701).
5. The gas self-closing valve as recited in claim 4, wherein: the metal valve core (701) is limited at the center of the main valve seat (6) in a sliding way, and the top end of the valve rod (703) penetrates through the leather membrane (8) and the valve cover (2) and extends to the top of the leather membrane.
6. The gas self-closing valve as recited in claim 4, wherein: the center of the main valve seat (6) is provided with a gas transmission hole corresponding to the vent hole (702), and one end of the gas transmission hole is communicated with the connecting pipe (12).
7. The gas self-closing valve as recited in claim 4, wherein: the low-pressure self-closing structure (9) comprises a bottom sealing seat (901), and a low-pressure adsorption magnet (902) is fixedly connected to the bottom of the center of the bottom sealing seat (901).
8. The gas self-closing valve as recited in claim 7, wherein: the bottom sealing seat (901) is fixed at the bottom center of the main valve body (1), and a through hole corresponding to the metal valve core (701) is formed in the bottom center of the main valve body (1).
9. The gas self-closing valve as recited in claim 7, wherein: the high-pressure self-closing structure (10) comprises a sealing gasket (1001) and a metal ring (1002), and a high-pressure adsorption magnet (1003) is fixedly connected to the center of the inner surface of the top of the valve cover (2).
10. The gas self-closing valve as recited in claim 9, wherein: the sealing gasket (1001) and the metal ring (1002) are both fixed on the outer wall of the metal valve core (701), and the sealing gasket (1001) and the metal ring (1002) are clamped and fixed on the bottom of the leather membrane (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223303331.1U CN219177021U (en) | 2022-12-09 | 2022-12-09 | Gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223303331.1U CN219177021U (en) | 2022-12-09 | 2022-12-09 | Gas self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219177021U true CN219177021U (en) | 2023-06-13 |
Family
ID=86665359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223303331.1U Active CN219177021U (en) | 2022-12-09 | 2022-12-09 | Gas self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219177021U (en) |
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2022
- 2022-12-09 CN CN202223303331.1U patent/CN219177021U/en active Active
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