CN212297736U - Pipeline gas self-closing valve - Google Patents
Pipeline gas self-closing valve Download PDFInfo
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- CN212297736U CN212297736U CN202020540540.XU CN202020540540U CN212297736U CN 212297736 U CN212297736 U CN 212297736U CN 202020540540 U CN202020540540 U CN 202020540540U CN 212297736 U CN212297736 U CN 212297736U
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Abstract
The utility model discloses a pipeline gas self-closing valve, be equipped with the air inlet respectively and directly gas outlet, the centre is equipped with automatic cutout device's valve body and overcurrent control protection device including both ends, the valve body on still be provided with the side gas outlet. The utility model discloses a pipeline gas self-closing valve is tee bend dual-purpose, and straight gas outlet is applicable to domestic gas-cooker, and the side gas outlet is applicable to domestic quick gas heater or gas heating water heater, practices thrift the cost. When the gas supply is abnormal, such as under-pressure, overpressure, accidental gas stop, rubber tube falling and the like, the gas supply can be automatically closed and cut off, so that the safety of users is protected, the performance is reliable, the action is sensitive, the external control is not needed, and the gas supply is in the standby state all day long.
Description
Technical Field
The utility model relates to a pipeline valve, concretely relates to pipeline gas self-closing valve.
Background
The gas self-closing valve for pipeline is installed on the pipeline of low-pressure gas system, and when the gas supply pressure of pipeline is under-pressure or over-pressure, it has no need of using electricity or other external power, and can be automatically closed and manually opened. The self-closing valve arranged at the joint of the tail end of the pipeline and the rubber pipe behind the gas meter has the pressure-loss closing function. The pipeline gas self-closing valve is suitable for pipeline natural gas, liquefied petroleum gas and artificial gas. However, the existing pipeline gas self-closing valve only has one straight gas outlet, and is directly connected with a household gas stove or a gas instantaneous water heater (or a gas heating water heater). If the two appliances are used at home at the same time, the gas self-closing valve can be used at the same time only by connecting the branch pipeline from the main gas pipeline and then adding one pipeline gas self-closing valve. Therefore, the prior pipeline gas self-closing valve has single function and wastes resources.
Disclosure of Invention
Aiming at the problems and defects in the prior art, the invention aims to provide a pipeline gas self-closing valve which is provided with two gas outlets and can be connected with a gas stove and a water heater simultaneously, so that the problems of single function and resource waste of the pipeline gas self-closing valve are effectively solved.
The utility model discloses the technical scheme that the purpose adopted is realized is a pipeline gas self-closing valve, be equipped with the air inlet respectively and straight gas outlet, the centre is equipped with automatic cutout device's valve body including both ends, the valve body on still be provided with the side gas outlet.
Furthermore, an overcurrent control protection device is also arranged in the valve body.
Furthermore, the automatic cutting device consists of an upper cover, a safety helmet, a cover plate, a valve port pad, a sealing rod bracket, a shaft pin, a rocker arm, a pull rod, a limiting disc, a tray, a sealing membrane, a soft iron disc and a magnetic ring, wherein the cover plate is arranged in an air inlet of the valve body, and a spring I is arranged between the cover plate and the valve port pad; the valve port pad is connected with one end of a sealing rod, the other end of the sealing rod is connected with the short arm end of a rocker arm, and the long arm end of the rocker arm is connected with a connecting rod; the rocker arm is connected to a sealing rod bracket of the valve body through a shaft pin; the upper end of the connecting rod is provided with a magnetic ring, a soft iron disc is arranged on the upper edge of the magnetic ring, a sealing membrane is arranged on the upper edge of the soft iron disc, and the periphery of the sealing membrane is pressed on the valve body by the upper valve body and is clamped tightly by a clamp; the tray is arranged on the upper edge of the sealing membrane; the tray is connected with one end of a pull rod, and the other end of the pull rod penetrates through a limiting disc arranged in the upper valve body and is connected with the safety helmet; the upper valve body upper end be equipped with the upper cover, upper cover and spacing dish pass through the extension spring and connect.
Furthermore, the over-current control protection device comprises an over-current support, an over-current tongue plate, an over-current spring and an over-current spring seat, wherein the over-current tongue plate is arranged on a support at the inlet of a vent pipe of the over-current support, and the over-current spring seat is arranged at the outlet of the vent pipe of the over-current support.
Further, the connecting rod last time overlaps locating plate and overflows the support.
Furthermore, a knob switch is arranged on the valve body close to the straight air outlet.
The utility model discloses the theory of operation of pipeline gas self-closing valve as follows:
1) the upper cover is lifted during normal gas supply, the pull rod drives the sealing diaphragm, the connecting rod moves upwards, the valve port pad moves forwards under the action of the rocker arm, the valve is opened, after gas enters, the sealing diaphragm generates upward buoyancy, the valve works normally, when the gas is stopped accidentally, gas in the valve body is lost and is in an under-pressure state, the buoyancy of the sealing diaphragm disappears, the pull rod is driven, the connecting rod moves downwards, the magnetic ring plays a role in attracting with the positioning plate, and meanwhile, the valve port pad is pulled to return through the rocker arm to seal the gas inlet end. The purpose of automatic closing under voltage is achieved. The upper cover must be pulled again to open the valve again.
2) When the rubber tube is damaged and falls off accidentally, the overcurrent protection device acts, the working principle is that the gas flow is overlarge to generate impact force, so that the overcurrent tongue plate moves towards the air outlet direction and is tightly attached to the overcurrent spring seat for sealing, the interior of the valve body is in an instant emptying state, the buoyancy of the sealing diaphragm disappears, the pull rod and the connecting rod are driven to move downwards, the magnetic ring acts and is attracted to the positioning plate in the overcurrent support, and meanwhile, the valve port pad is pulled to return through the rocker arm to seal the air inlet end. The purpose of automatic closing during overcurrent is achieved. The upper cover must be pulled again to open the valve again.
3) When the abnormal pressure of the air supply is too high, the buoyancy of the sealing diaphragm is increased, when the buoyancy of the sealing diaphragm is larger than a set value, the magnet is separated from the soft iron disc, the magnet moves downwards to drive the connecting rod to move downwards, the magnetic ring plays a role and is attracted with the positioning plate in the overflowing support, and meanwhile, the rocker arm pulls the valve port pad to return to the original position to seal the air inlet end. The purpose of automatic closing under overpressure is achieved. The upper cover must be pulled again to open the valve again.
Compared with the prior art, the utility model discloses a pipeline gas self-closing valve has following advantage:
1) the utility model discloses a pipeline gas self-closing valve is tee bend dual-purpose, and straight gas outlet is applicable to domestic gas-cooker, and the side gas outlet is applicable to domestic quick gas heater or gas heating water heater. The cost is saved, the tee joint has two purposes, and the household gas stove and the gas heating water heater only need one valve.
2) When the gas supply is abnormal, such as under-pressure, overpressure, accidental gas stop, rubber tube falling and the like, the gas supply can be automatically closed, the gas source is cut off, and the safety of users is protected. Reliable performance, sensitive action, no need of external control and all-weather state of giving up.
3) The overcurrent control protection device is internally arranged and is made of wear-resistant, heat-resistant and corrosion-resistant high-performance materials, so that the flexibility and the durability of the mechanism are ensured. The defects of the market products are as follows: the general market products do not have an overcurrent control protection device, or the overcurrent protection device is installed at the air inlet end. Without the over-current protection device, when the rubber tube is damaged or the dropping flow is too large, the valve may not be closed, and the over-current protection function cannot be achieved. When the overcurrent protection device is installed at the air inlet end, the overcurrent protection device is easily damaged if the pipeline thread is too long in the construction and installation process, so that the valve is blocked, or the overcurrent protection function fails.
Drawings
FIG. 1 is a top view of the gas self-closing valve for pipeline according to the present invention;
FIG. 2 is a sectional view of the gas self-closing valve for pipeline according to the present invention;
fig. 3 is a side view of the pipeline gas self-closing valve of the invention.
The following are reference numerals: the valve comprises a valve body 1, a side air outlet 2, a knob 3, a detection cap 4, an upper cover 5, a safety cap 6, a cover plate 7, a spring-I8, a valve port pad 9, a sealing rod 10, a sealing rod support 11, a shaft pin 12, a rocker arm 13, a pull rod 14, a limiting disc 15, a tray 16, a sealing diaphragm 17, a soft iron disc 18, a magnetic ring 19, a connecting rod 20, an overflowing support 21, an overflowing tongue plate 22, an overflowing spring 23, an overflowing spring seat 24, a PTFE washer 25, a ball 26, a valve core 27, a sealing ring 28, a straight air outlet 29, an upper valve body 30, a hoop 31, a positioning plate 32, a limiting spring 33 and inlet air 34.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific embodiments given by the inventor.
Fig. 1 shows the utility model discloses a pipeline gas self-closing valve from the angle of top view, including both ends be equipped with air inlet 34 respectively and straight gas outlet 29, the centre is equipped with automatic cutout device's valve body 1, valve body 1 on still be provided with side gas outlet 2. The air inlet 34 and the straight air outlet 29 are arranged on the transverse central axis of the valve body 1; the side outlet 2 is arranged on the longitudinal central axis of the valve body 1.
Fig. 2 and fig. 3 show the gas self-closing valve for pipeline according to the present invention from the perspective of cross-sectional view and side view, respectively, the automatic cut-off device is composed of an upper cover 5, a safety cap 6, a cover plate 7, a valve port pad 9, a sealing rod 10, a sealing rod support 11, a shaft pin 12, a rocker arm 13, a pull rod 14 limiting disc 15, a tray 16, a sealing membrane 17, a soft iron disc 18, and a magnetic ring 19, the cover plate 7 is installed in the air inlet 34 of the valve body 1, and a spring I8 is provided between the cover plate 7 and the valve port pad 9; the valve port pad 9 is connected with one end of a sealing rod 10, the other end of the sealing rod 10 is connected with the short arm end of a rocker arm 13, and the long arm end of the rocker arm 13 is connected with a connecting rod 20; the rocker arm 13 is connected to the sealing rod bracket 11 of the valve body 1 through a shaft pin 12; the upper end of the connecting rod 20 is provided with a magnetic ring 19, the upper edge of the magnetic ring 19 is provided with a soft iron disc 18, the upper edge of the soft iron disc 18 is provided with a sealing diaphragm 17, and the periphery of the sealing diaphragm 17 is pressed on the valve body 1 by an upper valve body 30 and is clamped tightly by a clamp 31; the tray 16 is arranged on the upper edge of the sealing membrane 17; the tray 16 is connected with one end of a pull rod 14, and the other end of the pull rod 14 penetrates through a limiting disc 15 arranged in the upper valve body 30 to be connected with the safety helmet 6; the upper end of the upper valve body 30 is provided with an upper cover 5, and the upper cover 5 is connected with the limiting disc 15 through a limiting spring 33.
The upper end of the connecting rod 20 is connected with a magnetic ring 19 through self-tapping;
the soft iron disc 18, the sealing membrane 17, the tray 16 and the pull rod 14 are connected through screws.
The over-current control protection device comprises an over-current support 21, an over-current tongue plate 22, an over-current spring 23 and an over-current spring seat 24, wherein the over-current tongue plate 22 is arranged on a support at the inlet of a vent pipe of the over-current support 21, and the over-current spring seat 24 is arranged at the outlet of the vent pipe of the over-current support 21.
The connecting rod 20 is sleeved on the positioning plate 32 and the overflowing support 21 last time.
The knob switch comprises a knob 3, a detection cap 4, a PTFE washer 25, a ball 26, a valve core 27 and a sealing ring 28.
One, the utility model discloses pipeline gas self-closing valve's function:
1. when the problems of gas leakage caused by gas supply under-pressure, overpressure, external gas stop, rubber tube falling and the like occur, the gas source can be automatically cut off by the gas supply device;
2. the product can work under the conditions of no energy consumption, no pollution and no maintenance;
3. the product can be used for detecting whether leakage exists in gas appliances such as indoor gas meters, pipelines and cookers.
Second, installation method
1. The air inlet is connected with an air inlet pipeline;
2. the gas outlet is connected with a stainless steel corrugated hose for connecting gas appliances or a hose meeting the requirements for connecting the gas appliances;
3. and (5) spraying soapy water at the joint for testing, and finishing installation without bubbling.
4. The gas inlet pipeline is fixed by the special pipe clamp, so that the whole pipeline is in a stable state, and the pipeline and the gas self-closing valve of the pipeline are prevented from moving and loosening to cause safety hiding in the use process.
Third, description of use
1. Rotating the ball valve switch to make the handle parallel to the gas path;
2. the handle button can be used in normal air supply state;
3. the hand button suck back is found in use and may have the following problems:
a. stopping gas supply of a gas company;
b. the gas supply pressure is too low;
c. the IC card gas meter stops working or the balance in the card is insufficient.
Claims (2)
1. A pipeline gas self-closing valve comprises a valve body (1) with an air inlet (34) and a straight air outlet (29) at two ends respectively and an automatic cut-off device in the middle, and is characterized in that the valve body (1) is also provided with a side air outlet (2), and an overcurrent control protection device is also arranged in the valve body (1); the automatic cutting device consists of an upper cover (5), a safety helmet (6), a cover plate (7), a spring I (8), a valve port pad (9), a sealing rod (10), a sealing rod support (11), a shaft pin (12), a rocker arm (13), a pull rod (14), a limiting disc (15), a tray (16), a sealing diaphragm (17), a soft iron disc (18), a magnetic ring (19) and a positioning plate (32), wherein the cover plate (7) is arranged in an air inlet (34) of the valve body (1), and the spring I (8) is arranged between the cover plate (7) and the valve port pad (9); the valve port pad (9) is connected with one end of a sealing rod (10), the other end of the sealing rod (10) is connected with the short arm end of a rocker arm (13), and the long arm end of the rocker arm (13) is connected with a connecting rod (20); the rocker arm (13) is connected to a sealing rod bracket (11) of the valve body (1) through a shaft pin (12); the upper end of the connecting rod (20) is connected with a plurality of magnetic rings (19); a sealing membrane (17) is arranged on the upper side of the soft iron disc (18), and the periphery of the sealing membrane (17) is pressed on the valve body (1) by the upper valve body (30) and is clamped tightly by a clamp (31); a tray (16) is arranged on the upper side of the sealing membrane (17); the tray (16) is connected with one end of a pull rod (14), and the other end of the pull rod (14) penetrates through a limiting disc (15) arranged in the upper valve body (30) and is connected with the safety helmet (6); the upper end of the upper valve body (30) is provided with an upper cover (5), and the upper cover (5) is connected with the limiting disc (15) through a limiting spring (33);
the over-current control protection device consists of an over-current support (21), an over-current tongue plate (22), an over-current spring (23) and an over-current spring seat (24), wherein the over-current tongue plate (22) is arranged on a support at the inlet of a vent pipe of the over-current support (21), and the over-current spring seat (24) is arranged at the outlet of the vent pipe of the over-current support (21);
the connecting rod (20) is sleeved with the positioning plate (32) and the overflowing support (21) last time.
2. The pipeline gas self-closing valve according to claim 1, characterized in that a knob switch is arranged on the valve body (1) near the straight gas outlet (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020540540.XU CN212297736U (en) | 2020-04-13 | 2020-04-13 | Pipeline gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020540540.XU CN212297736U (en) | 2020-04-13 | 2020-04-13 | Pipeline gas self-closing valve |
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| Publication Number | Publication Date |
|---|---|
| CN212297736U true CN212297736U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020540540.XU Active CN212297736U (en) | 2020-04-13 | 2020-04-13 | Pipeline gas self-closing valve |
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| CN (1) | CN212297736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352778A (en) * | 2021-12-15 | 2022-04-15 | 陕西欧迪亚实业有限公司 | Pipeline gas self-closing valve, control method and low-pressure gas system pipeline |
-
2020
- 2020-04-13 CN CN202020540540.XU patent/CN212297736U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352778A (en) * | 2021-12-15 | 2022-04-15 | 陕西欧迪亚实业有限公司 | Pipeline gas self-closing valve, control method and low-pressure gas system pipeline |
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