One-way self-closing valve

Abstract

The utility model relates to the technical field of valves, and particularly provides a one-way self-closing valve which comprises a self-closing valve body, a valve element, a valve element and a valve element. The one-way valve is arranged in the air inlet channel, and the one-way valve is provided with a one-way partition plate, an elastic piece and a closing piece; wherein the closing piece is arranged in the middle of the one-way partition plate in a sleeving mode, a plurality of vent holes are formed in the one-way partition plate, the elastic piece deviates from the air outlet channel and is arranged between the closing piece and the one-way partition plate, and the closing piece is used for closing the vent holes in the one-way partition plate. The one-way self-closing valve is effectively prevented from being cut off mistakenly due to sudden pressure drop in a pipeline caused by external factors such as starting of the water heater, the frequency that a user needs to reset the self-closing valve manually after using the water heater is reduced, and the practicability and convenience of use of the one-way self-closing valve are further improved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a one-way self-closing valve. Background Art

[0002] The gas self-closing valve is a safety device used in gas pipeline systems. Its main function is to automatically cut off the gas supply to prevent safety accidents caused by abnormal conditions such as pipeline leakage, low or high pressure, etc.

[0003] However, after the existing gas self-closing valve was put into use in large quantities, it was found that when the gas stove is close to the water heater, the self-closing valve on the gas stove pipeline will automatically cut off when the water heater is started even if the gas stove is not in use. This is because the water heater has a large power and will lower the pressure in the front pipeline when it is suddenly started. However, there is no one-way valve structure at the front end of the gas valve, which causes the self-closing valve close to the water heater to cut off due to low pressure in the pipeline. Users often need to manually reset the self-closing valve after using the water heater.

[0004] Therefore, the prior art has defects and deficiencies and needs further improvement and development. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a one-way self-closing valve, aiming to solve the problem that the gas self-closing valve in the prior art is prone to mis-cutting due to a sudden drop in pressure.

[0006] A technical solution adopted by the present application to solve the technical problem is as follows: a one-way self-closing valve, comprising:

[0007] A self-closing valve body, the self-closing valve body comprising an air inlet channel and an air outlet channel arranged opposite to each other;

[0008] A one-way valve, the one-way valve is arranged in the air intake passage, and the one-way valve is provided with a one-way partition, an elastic member and a closing member;

[0009] Among them, the closing piece is sleeved on the middle part of the one-way partition, a plurality of ventilation holes are arranged in the one-way partition, the elastic piece is arranged between the closing piece and the one-way partition away from the air outlet channel, and the closing piece is used to close the plurality of ventilation holes in the one-way partition.

[0010] Optionally, the one-way partition further includes:

[0011] A partition body, the partition body is fixedly arranged in the air inlet passage, and the partition body has an air inlet end and an air outlet end which are arranged opposite to each other;

[0012] A sliding through-hole is provided in the middle of the partition body, and a plurality of the ventilation holes are evenly spaced around the sliding through-hole;

[0013] A limiting portion is provided around the air inlet end, and the limiting portion is used for clamping and fixing the elastic member;

[0014] A sealing portion is provided around the air outlet end, and the sealing portion is used for cooperating with the closing member to seal a plurality of the ventilation holes.

[0015] Optionally, the closing member includes:

[0016] A closing body is sleeved in the middle of the one-way partition. The closing body has a sealing end and a sleeved end arranged oppositely. The sealing end is arranged on one side of the air outlet end, and the sleeved end is arranged on one side of the air inlet end;

[0017] An air-facing head is sleeved on the sleeved end.

[0018] Optionally, a fitting protrusion is provided at the edge of the air-facing head, and the fitting protrusion is used for cooperating with the limiting portion to fix the elastic member.

[0019] Optionally, the size of the sealing portion is smaller than the size of the sealing end.

[0020] Optionally, a plurality of force-bearing protrusions are provided on the side of the sealing end close to the air-facing head, and the force-bearing protrusions are used for increasing the thrust of the sealing end by the gas.

[0021] Optionally, the one-way self-closing valve further includes a flow-limiting component, and the flow-limiting component is arranged on one side of the intake passage close to the outlet passage, and the flow-limiting component is used for limiting the flow rate of the gas.

[0022] Optionally, the one-way self-closing valve further includes a cutting-off component, and the cutting-off component is arranged in the middle of the self-closing valve body.

[0023] Optionally, the cutting-off component includes a lifting cap, a lifting button, a pull rod, a diaphragm, a magnet and a control lever which are arranged in sequence from top to bottom.

[0024] Optionally, a cutting washer is provided on the left side of the control lever, and the cutting washer is used for cutting off the intake passage.

[0025] Compared with the prior art, the present application provides a one-way self-closing valve. Through the interaction of a one-way partition, an elastic member, and a closing member, the one-way self-closing valve realizes the one-way flow control of gas from the gas inlet passage direction to the gas outlet passage direction. When the gas pressure is normal and the direction is correct, the gas can push the closing member to open the ventilation hole, enabling the gas to flow smoothly through; when the gas pressure decreases abnormally or the direction is opposite, the closing member will close the ventilation hole under the action of the elastic member, preventing the gas from continuing to flow, effectively preventing the mis-cutoff of the one-way self-closing valve caused by the sudden drop in pipeline pressure due to external factors such as the start of the water heater, reducing the frequency of the user having to manually reset the self-closing valve after using the water heater, and further improving the practicability and convenience of using the one-way self-closing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a longitudinal sectional view of the one-way self-closing valve provided in the present application;

[0027] Figure 2 is in the present application Figure 1 An enlarged schematic view of part A in.

[0028] Description of the reference numerals:

[0029] 10. One-way self-closing valve; 11. Self-closing valve body; 111. Intake passage; 112. Outlet passage; 12. Check valve; 121. One-way partition; 1211. Ventilation hole; 1212. Partition body; 1213. Sliding through hole; 1214. Limiting part; 1215. Sealing part; 1216. Inlet end; 1217. Outlet end; 122. Elastic member; 123. Closing member; 1231. Closing body; 1232. Air-facing head; 1235. Matching protrusion; 1233. Sealing end; 1234. Sleeve end; 13. Flow-limiting component; 14. Cutting-off component; 141. Pulling cap; 142. Pulling button; 143. Pulling rod; 144. Diaphragm; 145. Magnet; 146. Control lever; 147. Cutting washer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] Please refer to Figure 1 , the first embodiment of the present application provides a one-way self-closing valve 10. The one-way self-closing valve 10 is used for a gas pipeline. The one-way self-closing valve 10 is provided with a one-way valve 12 in the air inlet passage. The one-way valve 12 is provided with a one-way partition 121, an elastic member 122, and a closing member 123. Through the interaction of the one-way partition 121, the elastic member 122, and the closing member 123, the one-way flow control of gas from the air inlet passage direction to the air outlet passage 112 direction is realized. When the gas pressure is normal and the direction is correct, the gas can push the closing member 123 to open the vent hole 1211, enabling the gas to pass smoothly; when the gas pressure decreases abnormally or the direction is opposite, the closing member 123 will close the vent hole 1211 under the action of the elastic member 122, preventing the gas from flowing continuously, effectively preventing the mis-cutoff of the one-way self-closing valve 10 caused by the sudden drop in the pipeline pressure due to external factors such as the start of the water heater, reducing the frequency that the user needs to manually reset the self-closing valve after using the water heater, and further improving the practicability and convenience of using the one-way self-closing valve 10.

[0034] Please refer to Figure 1In some embodiments, the one-way self-closing valve 10 includes a self-closing valve body 11 and a one-way valve 12; the one-way valve 12 is used to prevent the one-way self-closing valve 10 from being accidentally cut off due to a sudden drop in pressure in the pipeline. The self-closing valve body 11 includes an air inlet channel 111 and an air outlet channel 112 that are relatively arranged, the air inlet channel 111 is used for gas to enter, and the air outlet channel 112 is used for gas to flow out, and the air inlet channel 111 and the air outlet channel 112 are interconnected. The one-way valve 12 is arranged in the air inlet channel 111, thereby effectively preventing the self-closing valve from being mistakenly cut off due to the pressure reduction in the front-end pipeline when the water heater is started, thereby improving the practicality and reliability of the gas self-closing valve, and the one-way valve 12 is provided with a one-way baffle 121, an elastic member 122 and a closing member 123; wherein, the closing member 123 is sleeved on the middle part of the one-way baffle 121, and a plurality of vents 1211 are arranged in the one-way baffle 121, thereby ensuring that the one-way valve 12 can maintain a ventilated state under normal circumstances, and the elastic member 122 is arranged between the closing member 123 and the one-way baffle 121 away from the air outlet channel 112, and the closing member 123 is used to close the plurality of vents 1211 in the one-way baffle 121, thereby arranging the one-way valve 12 in the air inlet channel 111 of the self-closing valve, ensuring that when the pressure in the air inlet channel 111 suddenly drops, the one-way valve 12 can automatically close to prevent the air flow from flowing back. It effectively avoids the situation where the gas self-closing valve is automatically cut off due to low pressure, reduces the frequency with which users need to manually reset the self-closing valve after using the water heater, and improves the user experience.

[0035] Please refer to Figure 2 In some embodiments, the one-way partition 121 further includes a partition body 1212, a sliding through hole 1213, a limiting portion 1214, and a sealing portion 1215; the sliding through hole 1213 is used to cooperate with the sliding of the closing member 123, the partition body 1212 is fixedly arranged in the air inlet channel 111, and the partition body 1212 has an air inlet end 1216 and an air outlet end 1217 that are relatively arranged; the sliding through hole 1213 is arranged in the middle of the partition body 1212, and a plurality of the air vents 1211 are evenly spaced. The sliding through hole 1213 is provided to optimize the gas flow channel and reduce the airflow resistance; the limiting portion 1214 is arranged around the gas inlet end 1216, and the limiting portion 1214 is used to clamp and fix the elastic member 122, thereby facilitating the installation and fixation of the elastic member 122 and improving the stability of the elastic member 122; the sealing portion 1215 is arranged around the gas outlet end 1217, and the sealing portion 1215 is used to cooperate with the closing member 123 to seal a plurality of the vents 1211, thereby enhancing the sealing effect and preventing gas leakage.

[0036] Please refer to Figure 2, in some embodiments, the closure member 123 includes a closure body 1231 and an air-facing head 1232; the closure body 1231 is sleeved on the middle part of the one-way partition 121, the closure body 1231 has a sealed end 1233 and a sleeved end 1234 which are oppositely arranged, the sealed end 1233 is arranged on one side of the air outlet end 1217, and the sleeved end 1234 is arranged on one side of the air inlet end 1216; the air-facing head 1232 is sleeved on the sleeved end 1234, so that the closure member 123 can quickly sense the change of the gas pressure. When the gas pressure reaches the set value, the air-facing head 1232 can quickly push the closure member 123 to move, realizing the quick on-off of the gas flow.

[0037] Please refer to Figure 2 , in some embodiments, a mating protrusion 1235 is provided at the edge of the air-facing head 1232, and the mating protrusion 1235 is used to cooperate with the limiting portion 1214 to fix the elastic member 122, thereby providing a more reliable support point for the installation of the elastic member 122. During the installation process, the mating protrusion 1235 can ensure the precise alignment and stable fixation of the elastic member 122 and the limiting portion 1214, reducing the risk of air leakage caused by improper installation. Also, during the closing process of the closure member 123, the mating protrusion 1235 can better guide the closure member 123 to move to the sealing position, ensuring the reliability and durability of the seal.

[0038] Please refer to Figure 2 , in some embodiments, the size of the sealed portion 1215 is smaller than the size of the sealed end 1233, so as to ensure that the closure member 123 can better seal the vent hole 1211, ensuring that the one-way valve 12 can quickly close when the air pressure decreases, and improving the sealing performance of the one-way valve 12.

[0039] Please refer to Figure 2 , in some embodiments, a number of force-bearing protrusions are provided on the side of the sealed end 1233 close to the air-facing head 1232, and the force-bearing protrusions are used to increase the thrust of the gas on the sealed end 1233, thereby increasing the thrust area of the sealed end 1233 subjected to the gas. Under the action of the gas pressure, the force-bearing protrusions can more effectively convert the gas pressure into the power to push the closure member 123 to move, thereby reducing the gas pressure threshold required for the self-closing valve to open.

[0040] Please refer to Figure 1, in some embodiments, the one-way self-closing valve 10 further includes a flow-limiting component 13. The flow-limiting component 13 is disposed on one side of the intake passage 111 close to the outlet passage 112. The flow-limiting component 13 is used to limit the flow rate of the gas, thereby stabilizing the pressure fluctuation in the valve cavity by restricting the gas flow rate, ensuring that the gas enters the valve cavity at a constant flow rate, and avoiding the pressure mutation phenomenon caused by excessive flow rate.

[0041] Please refer to Figure 1 , in some embodiments, the self-closing valve further includes a cut-off component 14. The cut-off component 14 is disposed in the middle of the self-closing valve body 11, so that it is convenient for users or maintenance personnel to cut off or restore the gas supply through simple operations, improving the maintainability of the one-way self-closing valve 10.

[0042] Please refer to Figure 1 , in some embodiments, the cut-off component 14 includes a lifting cap 141, a lifting button 142, a pull rod 143, a diaphragm 144, a magnet 145, and a control lever 146 arranged in sequence from top to bottom, thereby realizing the opening and closing operations of the one-way self-closing valve 10, not only improving the stability and reliability of the operation, but also enabling users to control the on-off of the gas through simple lifting actions.

[0043] Please refer to Figure 1 , in some embodiments, a cut-off washer 147 is disposed on the left side of the control lever 146. The cut-off washer 147 is used to cut off the intake passage 111, thereby ensuring that the air pressure behind the self-closing valve is maintained stable, preventing the air pressure in the outlet passage 112 from dropping due to the sudden drop in pressure in the intake passage. Further, the diaphragm 144 can maintain its original expanded height without shrinking due to pressure changes, and the downward movement of the magnet 145 will not be triggered. The left arm of the control lever 146 will not drive the cut-off gasket to move to the right due to the change in the position of the magnet 145, effectively avoiding the accidental cut-off of the gas supply by the self-closing valve due to underpressure and ensuring the continuous and stable operation of the gas system.

[0044] Please refer to Figure 1In some embodiments, after the one-way self-closing valve 10 is initially installed, the one-way self-closing valve 10 is automatically in a closed state, and the cut-off gasket 147 is close to the left side of the valve port to ensure sealing. At the same time, the magnet 145 is firmly adsorbed on the bottom of the pull rod 143. To enable normal ventilation, it is necessary to first gently pull the button 142 upward. This action will link the pull rod 143 cap to rise, and then drive the pull rod 143 and the membrane 144 to move up synchronously, and the magnet 145 is also pulled up by the pull rod 143. As the magnet 145 rises, it drives the right arm of the control lever 146 to move up, and accordingly, the left arm of the lever moves to the left, pushing the cut-off gasket 147 away from the valve port to achieve opening. The gas then smoothly passes through the valve port from the left side into the valve cavity, and finally flows out from the right side. As the gas continues to flow in, the pressure inside the valve cavity gradually increases, and the membrane 144 maintains moderate expansion under the action of the internal pressure, effectively supporting the pull rod 143 and the magnet 145 to maintain a high position. At this time, the pressure in the valve cavity is usually stable within a range of about 2000 Pa. In order to prevent safety hazards caused by insufficient gas supply, the underpressure cut-off mechanism is set to automatically trigger when the pressure in the valve cavity drops to 800±200 Pa. Once the pressure is lower than 1000 Pa, since the membrane 144 cannot maintain a sufficient expansion height, the position of the magnet 145 drops, which in turn drives the right side of the control lever 146 to press down, and the left side of the control lever 146 returns to its position, tightly fitting with the valve port, thereby automatically cutting off the gas supply to ensure safety.

[0045] Please refer to Figure 1 In some embodiments, a ball valve can be provided in the air outlet channel 112 according to actual needs, thereby ensuring the reliability and durability of the sealing of the one-way self-closing valve 10.

[0046] In summary, the present application provides a one-way self-closing valve, which includes: a self-closing valve body, which includes an air inlet channel and an air outlet channel arranged relatively to each other; a one-way valve, which is arranged in the air inlet channel, and is provided with a one-way partition, an elastic member and a closing member; wherein the closing member is sleeved on the middle part of the one-way partition, and a plurality of air vents are arranged in the one-way partition, and the elastic member is arranged between the closing member and the one-way partition away from the air outlet channel, and the closing member is used to close the plurality of air vents in the one-way partition, thereby effectively preventing the one-way self-closing valve from being mistakenly cut off due to a sudden drop in pressure in the pipeline caused by external factors such as the start-up of the water heater, reducing the frequency with which the user needs to manually reset the self-closing valve after using the water heater, and further improving the practicality and convenience of using the one-way self-closing valve.

[0047] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A one-way self-closing valve, characterized in that, The one-way self-closing valve comprises: A self-closing valve body, the self-closing valve body comprising an air inlet channel and an air outlet channel arranged opposite to each other; A one-way valve, the one-way valve is arranged in the air intake passage, and the one-way valve is provided with a one-way partition, an elastic member and a closing member; Among them, the closing piece is sleeved on the middle part of the one-way partition, a plurality of ventilation holes are arranged in the one-way partition, the elastic piece is arranged between the closing piece and the one-way partition away from the air outlet channel, and the closing piece is used to close the plurality of ventilation holes in the one-way partition.

2. The one-way self-closing valve according to claim 1, wherein, The one-way partition also includes: A partition body, the partition body is fixedly arranged in the air inlet passage, and the partition body has an air inlet end and an air outlet end which are arranged opposite to each other; A sliding through hole, wherein the sliding through hole is arranged in the middle of the partition body, and a plurality of the vent holes are arranged evenly spaced from the sliding through hole; A limiting portion, the limiting portion is arranged around the air inlet end, and the limiting portion is used to clamp and fix the elastic member; A sealing portion is arranged around the air outlet end and is used to cooperate with the closing member to seal a plurality of the vent holes.

3. The one-way self-closing valve according to claim 2, wherein The closure element comprises: A closed body, the closed body is sleeved in the middle of the one-way partition, the closed body has a closed end and a sleeve end which are arranged opposite to each other, the closed end is arranged on one side of the air outlet end, and the sleeve end is arranged on one side of the air inlet end; An air-catching head is sleeved on the sleeve end.

4. The one-way self-closing valve according to claim 3, wherein, The edge of the air-facing head is provided with a matching protrusion, and the matching protrusion is used to match with the limiting part to fix the elastic member.

5. The one-way self-closing valve according to claim 3, characterized in that The size of the sealed portion is smaller than that of the sealed end.

6. The one-way self-closing valve according to claim 3, characterized in that, A plurality of force-holding protrusions are arranged on one side of the closed end close to the gas-facing head, and the force-holding protrusions are used to increase the thrust of the gas on the closed end.

7. The one-way self-closing valve according to claim 1, characterized in that, The one-way self-closing valve also includes a flow limiting component, which is arranged on a side of the air inlet channel close to the air outlet channel, and is used to limit the flow of the gas.

8. The one-way self-closing valve according to claim 1, characterized in that, The one-way self-closing valve further comprises a cut-off assembly, and the cut-off assembly is arranged in the middle of the self-closing valve body.

9. The one-way self-closing valve according to claim 8, wherein, The cutting assembly comprises a lifting cap, a lifting button, a pulling rod, a membrane, a magnet and a control lever which are arranged in sequence from top to bottom.

10. The one-way self-closing valve according to claim 9, characterized in that, A cut-off washer is arranged on the left side of the control lever, and the cut-off washer is used to cut off the air intake passage.

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