Gas self-closing valve
A gas self-closing valve and valve body technology, which is applied in the direction of safety valves, balance valves, valve devices, etc., can solve the problems of inconvenient production and assembly of gas self-closing valves, complex structure, etc., and achieve the goals of simplifying structure, facilitating installation and reducing costs Effect
Pending Publication Date: 2022-01-14
CIXI SANYANG ELECTRONICS
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Problems solved by technology
[0003] At present, the existing gas self-closing valve has a complex structure. Specifically, the sealing components for over-current closing and the sealing components for under-pressure or over-pressure closing will be designed separately, and installed in the valve body of the gas self-closing valve in sequence, which is inconvenient. The overall production and assembly of the gas self-closing valve
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[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0034] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may be an intervening element. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "affixed to" another element, it can be ...
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The invention relates to a gas self-closing valve. The gas self-closing valve comprises a valve body, a valve cover, a limiting plate, a valve element assembly, a valve rod assembly and an overflowing sealing assembly, and a medium guided into the valve body can enter the area where the valve element assembly is located through the overflowing sealing assembly; and the overflowing sealing assembly can close a medium channel flowing to the valve element assembly by utilizing the pressure change of the medium. According to the gas self-closing valve, when overflowing, underpressure and overpressure occur during working of the gas self-closing valve, the pressure of the medium changes, and the medium channel of the overflowing sealing assembly is closed on the basis, so that the overflowing, underpressure and overpressure functions of the gas self-closing valve are integrated, and then the modular design of the gas self-closing valve is achieved; and the effects that the structure is simplified, installation is convenient, and the cost is reduced are achieved.
Description
technical field [0001] The invention relates to the technical field related to gas valves, in particular to a gas self-closing valve. Background technique [0002] The gas self-closing valve is installed on the pipeline of the low-pressure gas system. When the gas supply pressure of the pipeline is under-pressure or over-pressure, it can be automatically closed without electricity or other external power and must be opened manually. [0003] At present, the existing gas self-closing valve has a complex structure. Specifically, the sealing components for over-current closing and the sealing components for under-pressure or over-pressure closing will be designed separately, and installed in the valve body of the gas self-closing valve in sequence, which is inconvenient. The overall production and assembly of the gas self-closing valve. Contents of the invention [0004] In view of this, it is necessary to provide a gas self-closing valve for solving the above technical prob...
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IPC IPC(8): F16K17/22
CPCF16K17/22
Inventor 吴建平徐存毅陈征
Owner CIXI SANYANG ELECTRONICS