CN214743599U - Gas pipeline self-closing valve - Google Patents
Gas pipeline self-closing valve Download PDFInfo
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- CN214743599U CN214743599U CN202120699157.3U CN202120699157U CN214743599U CN 214743599 U CN214743599 U CN 214743599U CN 202120699157 U CN202120699157 U CN 202120699157U CN 214743599 U CN214743599 U CN 214743599U
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Abstract
The utility model discloses a gas pipeline self-closing valve, which comprises a valve body and a valve cover arranged at the upper end of the valve body, wherein a throttling ring is arranged at the air inlet end of the valve body, the valve body is sequentially provided with a throttling mechanism and a cut-off mechanism along the air inlet direction, a return mechanism and a ball valve are sequentially arranged at the air outlet end of the valve body along the air flow direction, a fire-resisting net is arranged inside the ball valve, an adjusting nut is connected with the valve cover through a thread, and a sealing plate is arranged between the lower end of the adjusting nut and the valve cover; if bigger gas flow can drive the closing plate rebound through rotating adjusting nut when using, and then make the distance between closing plate and the diaphragm increase, because the increase of volume will make pressure diminish, can effectually reduce the pressure differential between the diaphragm from top to bottom, and then the gas of the pipeline accessible great velocity of flow, so that satisfy the use of different demands.
Description
Technical Field
The utility model belongs to the technical field of the gas valve, concretely relates to gas pipeline self-closing valve.
Background
With the popularization of the national natural gas, the users using the natural gas are more and more, and accidents caused by gas leakage are frequent. The main pipeline pressure of natural gas company is all higher, appear unusually not having under the condition of in time finding when the pressure regulating device, high pressure can directly supply the family user and cause danger, domestic gas pipeline is connected with the stove and is required one section coupling hose, because of droing, it is ageing, the insect pest damage causes the gas leakage and causes the accident, current gas self-closing valve variety is numerous, can solve partial gas leakage safety problem, but current self-closing valve can only use under certain pressure, often be at the in-process that uses because the not enough of pressure, a temperature for can't reach the use, and then to the user of service has caused certain unchangeably.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas pipeline self-closing valve; the self-closing valve can regulate and control the internal pressure of the self-closing valve so as to enable the flow rate of gas to be conveyed within a certain range.
The utility model discloses the technical scheme who adopts does:
a gas pipeline self-closing valve comprises a valve body and a valve cover arranged at the upper end of the valve body, wherein a throttling ring is arranged at the gas inlet end of the valve body, a throttling mechanism and a cut-off mechanism are sequentially arranged on the valve body along the gas inlet direction, a check mechanism and a ball valve are sequentially arranged at the gas outlet end of the valve body along the gas flow direction, a fire retarding net is arranged inside the ball valve, an adjusting nut is in threaded connection with the valve cover, and a sealing plate is arranged between the lower end of the adjusting nut and the valve cover.
Preferably, a diaphragm is arranged on the lower side of the sealing plate in the valve cover, a starting mechanism is connected to the adjusting nut in a sliding mode, one end of the starting mechanism is located on the upper side of the valve cover, the other end of the starting mechanism penetrates through the diaphragm and extends to the inner side of the valve body, and the starting mechanism extending to the inner side of the valve body is connected with the cutoff mechanism through a connecting rod.
Preferably, the starting mechanism comprises a starting rod which is in threaded connection with the adjusting nut, a starting base is installed at one end, close to the valve body, of the starting rod, a connecting rod is connected onto the starting base, two connecting pieces are fixedly connected to the middle of the starting rod, and the connecting pieces are arranged on two sides of the diaphragm respectively.
Preferably, the cutoff mechanism comprises a guide ring arranged inside the valve body, a cutoff plug is connected onto the guide ring in a sliding mode, and one end of the cutoff plug is connected to one end, far away from the starting base, of the connecting rod.
Preferably, the valve body is internally provided with a chamfer matching with the shut-off plug.
Preferably, the throttling mechanism comprises a throttling plug which is connected inside the valve body in a sliding mode, and an elastic piece is arranged between the throttling plug and the valve body.
Preferably, the check mechanism comprises a check ring arranged on the valve body close to the air outlet end, a check plug rotatably connected to the check ring, and a torsion spring arranged between the check plug and the check ring.
Preferably, the throttling ring, the flow guide ring, the check ring and the valve body are in sealing connection.
The utility model has the advantages that: if bigger gas flow can drive the closing plate rebound through rotating adjusting nut when using, and then make the distance between closing plate and the diaphragm increase, because the increase of volume will make pressure diminish, can effectually reduce the pressure differential between the diaphragm from top to bottom, and then the gas of the pipeline accessible great velocity of flow, so that satisfy the use of different demands.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic overall structural diagram of the present invention;
FIG. 2 is a schematic overall structural view II of the present invention;
FIG. 3 is a schematic structural diagram of the starting mechanism of the present invention;
fig. 4 is a schematic structural diagram of the throttling mechanism of the present invention;
fig. 5 is a schematic structural view of the current interrupt mechanism of the present invention;
fig. 6 is a schematic structural diagram of the check mechanism of the present invention.
In the figure: 1-a valve body; 2-valve cover; 3-adjusting the nut; 4-a starting mechanism; 401-an activation lever; 402-connecting piece; 403-starting the base; 5-a membrane; 6-a restrictor ring; 7-a throttling mechanism; 701-a throttling plug; 702-an elastic member; 8-a shut off mechanism; 801-flow break plug; 802-flow guiding ring; 9-a connecting rod; 10-a check mechanism; 1001-check ring; 1002-a check plug; 1003-torsion spring; 11-a ball type valve; 12-chamfering; 13-fire blocking net.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The specific implementation mode is as follows:
the specific embodiment of the present invention will be described with reference to fig. 1-6, which is a gas pipeline self-closing valve, including a valve body 1 and a valve cover 2 mounted on the upper end of the valve body 1, wherein a throttle ring 6 is mounted on the air inlet end of the valve body 1, the valve body 1 is sequentially provided with a throttle mechanism 7 and a cut-off mechanism 8 along the air inlet direction, the air outlet end of the valve body 1 is sequentially provided with a check mechanism 10 and a ball valve 11 along the air flow direction, a fire retarding net 13 is disposed inside the ball valve 11, an adjusting nut 3 is screwed on the valve cover 2, and a sealing plate 14 is disposed between the lower end of the adjusting nut 3 and the valve cover 2; a diaphragm 5 is arranged in the valve cover 2 and positioned on the lower side of the sealing plate 14, a starting mechanism 4 is connected onto the adjusting nut 3 in a sliding manner, one end of the starting mechanism 4 is positioned on the upper side of the valve cover 2, the other end of the starting mechanism 4 penetrates through the diaphragm 5 and extends to the inner side of the valve body 1, and the starting mechanism 4 extending to the inner side of the valve body 1 is connected with the cut-off mechanism 8 through a connecting rod 9; the starting mechanism 4 comprises a starting rod 401 which is in threaded connection with the adjusting nut 3, one end of the starting rod 401, which is close to the valve body 1, is provided with a starting base 403, the starting base 403 is connected with a connecting rod 9, the middle part of the starting rod 401 is fixedly connected with two connecting pieces 402, and the connecting pieces 402 at two sides are respectively arranged at two sides of the diaphragm 5; the flow breaking mechanism 8 comprises a guide ring 802 arranged inside the valve body 1, a flow breaking plug 801 is connected on the guide ring 802 in a sliding way, and one end of the flow breaking plug 801 is connected to one end of the connecting rod 9 far away from the starting base 403; a chamfer 12 matched with the cut-off plug 801 is arranged in the valve body 1; the throttle mechanism 7 comprises a throttle plug 701 which is connected in the valve body 1 in a sliding way, and an elastic member 702 is arranged between the throttle plug 701 and the valve body 1; the check mechanism 10 comprises a check ring 1001 arranged at the position, close to the air outlet end, of the valve body 1, a check plug 1002 rotatably connected to the check ring 1001, and a torsion spring 1003 arranged between the check plug 1002 and the check ring 1001; the throttle ring 6, the guide ring 802, the check ring 1001 and the valve body 1 are all connected in a sealing way; in the using process, the pressure between the sealing plate 14 and the sealing plate 14 inside the valve body can be adjusted by rotating the adjusting nut 3, when no gas passes through the pipeline, the pressure between the sealing plate 14 and the sealing plate 14 is greater than the pressure inside the pipeline, and then the membrane 5 can push the actuating rod 401 and the actuating base 304 to move downwards through the connecting rod 9, so that the stop plug 801 is tightly attached to the chamfer 12 inside the valve body 1, at the moment, the self-closing valve can not be opened, when the flow rate of the human gas inside the pipeline is overlarge due to abnormal use, the gas can push the throttle plug 701 to compress the elastic piece 702 to move, in the moving process, the flow rate of the gas can be increased, so that the flow rate between the membrane 5 and the valve body 1 is increased, due to the increase of the flow rate, the pressure between the membrane 5 and the valve body 1 can be reduced, so that the pressure between the membrane 5 and the valve body 1 is less than the pressure between the sealing plate 14 and the sealing plate 14, and then this self-closing valve will self-closing, if need bigger gas flow can drive the closing plate 14 through rotating adjusting nut 3 and upwards remove when using, and then make the distance between closing plate 14 and the diaphragm 5 increase, because the increase of volume will make pressure diminish, thereby at the gas of the pipeline accessible great velocity of flow, end setting back stop mechanism 10 through giving vent to anger at the self-closing valve, in the middle of the gas that can effectually prevent to give vent to anger the end enters into the self-closing valve, at the setting of cooperation fire blocking net 13, can effectually avoid when the accident takes place, because the backward flow of gas, bring flame into the self-closing valve in, can effectual improvement self-closing valve's fire prevention effect.
The utility model relates to a gas pipeline self-closing valve, its theory of operation is:
in the using process, the pressure between the sealing plate 14 and the sealing plate 14 inside the valve body can be adjusted by rotating the adjusting nut 3, when no gas passes through the pipeline, the pressure between the sealing plate 14 and the sealing plate 14 is greater than the pressure inside the pipeline, and then the membrane 5 can push the actuating rod 401 and the actuating base 304 to move downwards through the connecting rod 9, so that the stop plug 801 is tightly attached to the chamfer 12 inside the valve body 1, at the moment, the self-closing valve can not be opened, when the flow rate of the human gas inside the pipeline is overlarge due to abnormal use, the gas can push the throttle plug 701 to compress the elastic piece 702 to move, in the moving process, the flow rate of the gas can be increased, so that the flow rate between the membrane 5 and the valve body 1 is increased, due to the increase of the flow rate, the pressure between the membrane 5 and the valve body 1 can be reduced, so that the pressure between the membrane 5 and the valve body 1 is less than the pressure between the sealing plate 14 and the sealing plate 14, and then this self-closing valve will self-closing, if need bigger gas flow can drive the closing plate 14 through rotating adjusting nut 3 and upwards remove when using, and then make the distance between closing plate 14 and the diaphragm 5 increase, because the increase of volume will make pressure diminish, thereby at the gas of the pipeline accessible great velocity of flow, end setting back stop mechanism 10 through giving vent to anger at the self-closing valve, in the middle of the gas that can effectually prevent to give vent to anger the end enters into the self-closing valve, at the setting of cooperation fire blocking net 13, can effectually avoid when the accident takes place, because the backward flow of gas, bring flame into the self-closing valve in, can effectual improvement self-closing valve's fire prevention effect.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a gas pipeline self-closing valve which characterized in that: including valve body (1) and install valve gap (2) of valve body (1) upper end, choke ring (6) are installed to valve body (1) inlet end, valve body (1) has set gradually throttling mechanism (7) and shut-off mechanism (8) along its direction of air inlet, valve body (1) is given vent to anger the end and has set gradually return-stop mechanism (10) and ball type valve (11) along the air current direction, the inside of ball type valve (11) is provided with fire blocking net (13), threaded connection has adjusting nut (3) on valve gap (2), the lower extreme of adjusting nut (3) with be provided with between valve gap (2) closing plate (14).
2. A gas pipeline self-closing valve according to claim 1, characterized in that: lie in valve gap (2) the downside of closing plate (14) is provided with diaphragm (5), sliding connection has actuating mechanism (4) on adjusting nut (3), the one end of actuating mechanism (4) is located the upside of valve gap (2), the other end of actuating mechanism (4) passes diaphragm (5) and extend to the inboard of valve body (1), extend to actuating mechanism (4) inboard of valve body (1) with connect through connecting rod (9) between the mechanism (8) of cutting off.
3. A gas pipeline self-closing valve according to claim 2, wherein: the starting mechanism (4) comprises a starting rod (401) which is in threaded connection with the adjusting nut (3), a starting base (403) is installed at one end, close to the valve body (1), of the starting rod (401), a connecting rod (9) is connected onto the starting base (403), two connecting pieces (402) are fixedly connected to the middle of the starting rod (401), and the connecting pieces (402) are arranged on two sides of the diaphragm (5) respectively.
4. A gas pipeline self-closing valve according to claim 3, wherein: the flow cutoff mechanism (8) comprises a flow guide ring (802) arranged inside the valve body (1), a flow cutoff plug (801) is connected onto the flow guide ring (802) in a sliding mode, and one end of the flow cutoff plug (801) is connected to one end, away from the starting base (403), of the connecting rod (9).
5. The gas pipeline self-closing valve according to claim 4, wherein: a chamfer (12) matched with the cut-off plug (801) is arranged in the valve body (1).
6. A gas pipeline self-closing valve according to claim 1, characterized in that: the throttling mechanism (7) comprises a throttling plug (701) which is connected to the interior of the valve body (1) in a sliding mode, and an elastic piece (702) is arranged between the throttling plug (701) and the valve body (1).
7. The gas pipeline self-closing valve according to claim 4, wherein: the check mechanism (10) comprises a check ring (1001) arranged on the valve body (1) close to the air outlet end, a check plug (1002) rotatably connected to the check ring (1001), and a torsion spring (1003) is arranged between the check plug (1002) and the check ring (1001).
8. The gas pipeline self-closing valve according to claim 7, wherein: the throttling ring (6), the flow guide ring (802), the check ring (1001) and the valve body (1) are in sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699157.3U CN214743599U (en) | 2021-04-07 | 2021-04-07 | Gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699157.3U CN214743599U (en) | 2021-04-07 | 2021-04-07 | Gas pipeline self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743599U true CN214743599U (en) | 2021-11-16 |
Family
ID=78600704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120699157.3U Active CN214743599U (en) | 2021-04-07 | 2021-04-07 | Gas pipeline self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743599U (en) |
-
2021
- 2021-04-07 CN CN202120699157.3U patent/CN214743599U/en active Active
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