Self-closing valve structure of gas pipeline

Abstract

The utility model relates to a gas pipeline self-closing valve structure which comprises a valve body, a gas inlet pipe is arranged at one end of the valve body, a gas outlet pipe is arranged at the other end of the valve body, the valve body comprises a copper valve cover, a diaphragm and a pull rod, the diaphragm is arranged in the middle of an inner cavity of the valve body, the bottom end of the pull rod penetrates through the middle of the diaphragm, and the middle of the diaphragm is sealed and fixed through a protruding edge. The copper valve cover covers the diaphragm, the round cover is arranged on the copper valve cover and fixed to the top end of the pull rod, an annular groove is formed in the top face of the copper valve cover, the copper valve cover is in sliding fit with the annular groove, a horizontally-arranged ejector rod is arranged below an inner cavity of the valve body, and one end of the ejector rod penetrates through the air outlet pipe and is provided with a sealing plug. A movable shaft is arranged in the inclined hole channel and is in sliding connection with the inclined hole channel, and the magnet is in magnetic connection with the bottom end of the pull rod. The utility model has the beneficial effects that the diaphragm is arranged in the designed pipe body, and an air flow opening and closing passage is formed through the change of air pressure and the matching of the magnet and the pull rod.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipeline accessories, in particular to a gas pipeline self-closing valve structure. Background Art

[0002] At present, when most families install gas appliances, there is no protective safety device between the gas appliance and the gas pipeline. When the outdoor pipeline is blocked by ice or damaged, the pressure regulator at the front end of the gas pipeline is abnormal or the gas consumption peak period causes the gas pressure in the gas pipeline to be too low to ignite the gas appliance, and a safety accident will be caused by a slight leakage of gas; when the pressure regulator at the front end of the gas pipeline is abnormal or the gas company conducts a pipeline pressure test, the pressure in the gas pipeline is too high, which will also cause a safety accident; when the rubber hose connected to the gas appliance is aged, broken and detached due to long-term use of the gas appliance, or the rubber hose is broken due to rats gnawing, etc., causing the gas passage to leak and cause abnormal air flow in the pipeline, it will also cause a safety accident due to gas leakage. In summary, the traditional technology has certain safety hazards in the case of overpressure, underpressure and over-current leakage of household pipeline gas. In view of this, this invention is specially applied for. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the utility model provides a gas pipeline self-closing valve structure, which can improve the above-mentioned deficiencies.

[0004] The utility model relates to a self-closing valve structure for a gas pipeline, comprising a valve body, one end of the valve body being provided with an air inlet pipe, and the other end being provided with an air outlet pipe, the valve body comprising a copper valve cover, a diaphragm and a pull rod, a diaphragm being provided in the middle of the inner cavity of the valve body, the bottom end of the pull rod passing through the middle of the diaphragm, the bottom end of the pull rod extending outward to form a convex ridge, the middle of the diaphragm being sealed and fixed by the convex ridge, the copper valve cover covering the top of the diaphragm, the round cover being provided on the copper valve cover and being fixed to the top end of the pull rod, the top surface of the copper valve cover being provided with an annular groove, the copper valve cover being slidably matched with the annular groove, a horizontally arranged push rod being provided below the inner cavity of the valve body, one end of the push rod passing through the air outlet pipe and being provided with a sealing plug, an inclined channel being provided at the other end of the push rod, a moving shaft being provided in the inclined channel, the moving shaft being slidably connected to the inclined channel, a magnet being provided at the upper end of the moving shaft, and the magnet being magnetically connected to the bottom end of the pull rod.

[0005] Furthermore, a flow limiting cover is provided on the inner wall of the air outlet pipe.

[0006] Furthermore, a regulating valve is arranged on the air intake pipe.

[0007] Furthermore, the copper valve cover diaphragm is pressed around the copper valve cover and the valve body and fixed by an assembly clamp.

[0008] Furthermore, a support ring for fixing the push rod is provided on the bottom surface of the inner cavity of the valve body, and the support ring is in contact with the middle lower part of the push rod. A pressure plate is provided on the upper part of the push rod, and the pressure plate is adapted to the outer periphery of the upper part of the push rod, and a through hole is provided in the middle thereof. A connecting plate is provided on the upper end of the moving shaft, and a column groove is provided on the connecting plate, and the column groove passes through the through hole. The magnet is provided above the column groove, and a screw is provided in the middle of the magnet, and the screw fixes the magnet in the column groove.

[0009] The beneficial effect of the design of the utility model is that a diaphragm is arranged inside the designed tube body. When the air pressure is too high, the diaphragm expands upward, thereby driving the pull rod to move upward, and the magnet separates from the bottom end of the pull rod, causing the moving shaft to move downward, and at the same time causing the push rod to move toward the air inlet pipe, causing the sealing plug to seal the air outlet pipe entrance. On the contrary, the air pressure returns to normal, the magnet is connected to the bottom end of the pull rod, the moving shaft moves upward, the push rod moves toward the air inlet pipe, the sealing plug is opened to the air inlet pipe entrance, and a normal airflow path is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the utility model.

[0011] Illustration: 1 pipe body, 3 regulating valve, 4 assembly clamp, 5 copper valve cover, 51 annular groove, 6 round cover, 7 pull rod, 8 magnet, 9 pressure plate, 10 screw, 11 moving shaft, 12 push rod, 121 inclined channel, 13 sealing plug, 14 outlet pipe, 141 inlet pipe, 15 flow limiting cover, 17 diaphragm, 18 support ring, 19 connecting plate, 20 column groove. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0013] like Figure 1As shown, the utility model relates to a gas pipeline self-closing valve structure, including a valve body 1, one end of the valve body is provided with an air inlet pipe 141, and the other end is provided with an air outlet pipe 14, the valve body includes a copper valve cover 5, a diaphragm 17 and a pull rod 7, the diaphragm 17 is provided in the middle of the valve body cavity, the bottom end of the pull rod passes through the middle of the diaphragm, the bottom end of the pull rod extends outward to form a convex ridge, the middle of the diaphragm is sealed and fixed by the convex ridge, the copper valve cover 5 covers the top of the diaphragm, the round cover 6 is provided on the copper valve cover and connected with the top of the pull rod The end is fixed, and the top surface of the copper valve cover is provided with an annular groove 51, and the copper valve cover is slidably matched with the annular groove. A horizontally arranged push rod 12 is arranged below the inner cavity of the valve body, and one end of the push rod passes through the air outlet pipe and is provided with a sealing plug 13, and the sealing plug and the inlet position of the air inlet pipe form an open and closed passage, and an inclined channel 121 is arranged at the other end of the push rod, and a moving shaft is arranged in the inclined channel, and the moving shaft is slidably connected with the inclined channel, and a magnet 8 is arranged at the upper end of the moving shaft, and the magnet is magnetically connected to the bottom end of the pull rod.

[0014] As a technical improvement, a flow limiting cover 15 is provided on the inner wall of the air outlet pipe.

[0015] As a technical improvement, a regulating valve 3 is provided on the air intake pipe.

[0016] As a technical improvement, the copper valve cover diaphragm is pressed around the copper valve cover and the valve body and fixed by assembling the clamp 4.

[0017] As a technical improvement, a support ring 18 for fixing the push rod is provided on the bottom surface of the inner cavity of the valve body, and the support ring is in contact with the middle and lower part of the push rod. A pressure plate 9 is provided on the upper part of the push rod, and the pressure plate is adapted to the outer periphery of the upper part of the push rod, and a through hole is provided in the middle thereof. A connecting plate 19 is provided on the upper end of the moving shaft, and a column groove 20 is provided on the connecting plate, and the column groove passes through the through hole. The magnet is provided above the column groove, and a screw 10 is provided in the middle of the magnet, and the screw fixes the magnet in the column groove.

[0018] The tube body designed in this scheme has a diaphragm arranged inside. When the air pressure is too high, the diaphragm expands upward, driving the pull rod to move upward, and the magnet separates from the bottom end of the pull rod, causing the moving shaft to move downward, and at the same time causing the push rod to move toward the air inlet pipe, causing the sealing plug to seal the air outlet pipe entrance. On the contrary, the air pressure returns to normal, the magnet is connected to the bottom end of the pull rod, the moving shaft moves upward, the push rod moves toward the air inlet pipe, the sealing plug and the air inlet pipe entrance position are opened, forming a normal airflow path.

Claims

1. The gas pipeline self-closing valve structure is characterized by: The valve body comprises a valve body, one end of which is provided with an air inlet pipe, and the other end is provided with an air outlet pipe, the valve body comprises a copper valve cover, a diaphragm and a pull rod, a diaphragm is provided in the middle of the inner cavity of the valve body, the bottom end of the pull rod passes through the middle of the diaphragm, the bottom end of the pull rod extends outward to form a convex ridge, the middle of the diaphragm is sealed and fixed by the convex ridge, the copper valve cover covers the top of the diaphragm, a round cover is provided on the copper valve cover, the round cover is fixed to the top of the pull rod, the top surface of the copper valve cover is provided with an annular groove, the copper valve cover is slidably matched with the annular groove, a horizontally arranged push rod is provided below the inner cavity of the valve body, one end of the push rod passes through the air outlet pipe and is provided with a sealing plug, an inclined channel is provided at the other end of the push rod, a moving shaft is provided in the inclined channel, the moving shaft is slidably connected to the inclined channel, a magnet is provided at the upper end of the moving shaft, and the magnet is magnetically connected to the bottom end of the pull rod.

2. The gas pipeline self-closing valve structure according to claim 1 is characterized in that: A flow limiting cover is arranged on the inner wall of the air outlet pipe.

3. The gas pipeline self-closing valve structure according to claim 1 is characterized in that: A regulating valve is arranged on the air intake pipe.

4. The gas pipeline self-closing valve structure according to claim 1 is characterized in that: The copper valve cover diaphragm is pressed around between the copper valve cover and the valve body and fixed by an assembly clamp.

5. The gas pipeline self-closing valve structure according to claim 1 is characterized in that: A support ring for fixing the push rod is arranged on the bottom surface of the inner cavity of the valve body, and the support ring is in contact with the middle lower part of the push rod. A pressure plate is arranged on the upper part of the push rod, and the pressure plate is matched with the outer periphery of the upper part of the push rod, and a through hole is arranged in the middle thereof. A connecting plate is arranged on the upper end of the movable shaft, and a column groove is arranged on the connecting plate, and the column groove passes through the through hole. The magnet is arranged above the column groove, and a screw is arranged in the middle of the magnet, and the screw fixes the magnet in the column groove.

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