Check valve with high pressure resistance type recoil disc

Abstract

The invention relates to the technical field of check valves, in particular to a check valve with a high pressure resistance type recoil disc. The valve comprises a valve body, wherein an air inlet pipe and an air outlet pipe communicating with the outside are formed in the bottom of the valve body, the end part of the air inlet pipe extends to the inside of the valve body to be provided with a rectangular fixing block in a welded mode, the end part of the air inlet pipe penetrates through the middle part of the rectangular fixing block, symmetrically distributed convex blocks are arranged onthe positions, close to the top, of the other side of the rectangular fixing block, a rubber sealing plate is hinged between the two convex blocks, a fixing plate is horizontally welded to the position, close to the top of the rectangular fixing block, of the inner wall of the valve body, an air guide pipe is vertically arranged in the middle part of the top of the fixing plate, the recoil disc isarranged right above the air guide pipe, and the top of the recoil disc is provided with a reinforcing ring in a sleeved mode. According to the check valve with the high pressure resistance type recoil disc, the check valve can be subjected to pressure relief through the recoil disc and the air guide pipe, so that the check valve is prevented from being broken and damaged, and the compressive strength of the recoil disc can be improved through the reinforcing ring.

Description

technical field [0001] The invention relates to the technical field of check valves, in particular to a check valve with a high-pressure-resistant recoil disc. Background technique [0002] Check valve refers to a kind of valve that the opening and closing parts rely on their own weight and medium pressure to block the backflow of the medium. In the petrochemical gas pipeline, a check valve is required to prevent the backflow of petrochemical gas and ensure that the petrochemical gas The delivery pipe can only flow in one direction, but the existing check valve lacks a structure that can relieve pressure. When the pressure in the check valve is too high, it may cause damage to the check valve and cause leakage of petrochemical gas. Therefore, there is a safety hidden danger, in view of this, we propose a check valve with a high pressure-resistant type recoil disc. Contents of the invention [0003] The purpose of the present invention is to provide a check valve with a hi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a check valve with a high pressure-resistant recoil disc to solve the problem of the lack of a pressure relief structure in the existing check valve mentioned in the above-mentioned background technology. When the pressure in the check valve is too large When, it may cause the problem of damage to the check valve

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