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Pressure relief explosion-proof valve

An explosion-proof valve and pressure relief technology, which is applied in safety valves, balance valves, valve devices, etc., can solve problems such as limited application range, inconvenient use, and limited installation methods, so as to achieve a wide range of applications, avoid secondary explosions, and prevent air pollution. entry effect

Active Publication Date: 2015-12-02
XIECHANG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the explosion-proof door of the first type of explosion-proof valve is sealed on the air outlet by gravity, its installation method will be limited, and its application range is relatively limited; while the second type of explosion-proof valve is a one-time product because the explosion-proof disc is a one-time product. After the pressure is released, the explosion-proof plate needs to be replaced, which is inconvenient to use

Method used

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Effect test

Embodiment 1

[0015] like figure 1 As shown, the pressure relief explosion-proof valve includes a flange 1, a sealing cover 2, an explosion-proof door 3 installed between the flange 1 and the sealing cover 2, and a sealing ring between the explosion-proof door 3 and the flange 1. In this embodiment, the explosion-proof door includes two guide rails 31 symmetrically arranged between the flange 1 and the sealing cover 2, an explosion-proof door body 32 sealed on the circumference of the central hole of the flange 1, and the explosion-proof door body 32 A spring 33 that is sealingly connected to the circumference of the center hole of the flange 1, the spring 33 is arranged between the explosion-proof door body 32 and the sealing cover 2 and is in a compressed state; the seal ring includes a sealing groove fixed on the circumference of the center hole of the flange 1 41 and the gasket 42 set in the sealing groove 41.

[0016] An air outlet is provided on equipment with potential explosion haz...

Embodiment 2

[0020] The difference between this embodiment and the first embodiment is that the sealing gasket 42 is fixedly connected with the explosion-proof door body 32 and matches with the sealing groove 41 . At normal pressure, the gasket 42 is embedded in the sealing groove 41 , and when the pressure is released, the gasket 42 pops out with the explosion-proof door body 32 and separates from the sealing groove 41 .

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Abstract

The invention relates to a pressure-relief anti-explosion valve comprising a flange, a sealing cap and an explosion door. The flange sealed with a device having explosion hazards is fixedly connected with the same, the sealing cap is sealed with the flange, and the explosion door is installed inside the sealing cap and sealed to the periphery of a center hole of the flange. The explosion door comprises at least one guide rail, an explosion door body and a spring. The guide rails vertical to the flange are connected between the sealing cap and the flange, the explosion door body is used for relieving pressure when the device is popped open due to large pressure inside, the spring is used for connecting the explosion door body and the periphery of the center hole of the flange in a sealed manner, and the explosion door body is slidably connected with the guide rails and sealed with the periphery of the center hole of the flange. Since the explosion door body and the flange are connected in a sealed manner by the spring, when the pressure inside the device is large, the explosion door body is restored rapidly after being popped open to prevent air from entering, and a secondary explosion is avoided; and the pressure-relief anti-explosion valve is pressed against the flange relying on elastic force of the spring, so can be used repeatedly on the device in any manner of installation, and is wide in application.

Description

technical field [0001] The invention relates to the explosion-proof field, in particular to a pressure relief explosion-proof valve. Background technique [0002] Existing explosion-proof valve has two kinds, and a kind of is to make explosion-proof door cover on air outlet by gravity, and another kind is to arrange explosion-proof sheet at air outlet. Because the explosion-proof door of the first type of explosion-proof valve is sealed on the air outlet by gravity, its installation method will be limited, and its application range is relatively limited; while the second type of explosion-proof valve is a one-time product because the explosion-proof disc is a one-time product. After the pressure is released, the explosion-proof disc needs to be replaced, which is inconvenient to use. Contents of the invention [0003] The purpose of the present invention is to provide a pressure relief explosion-proof valve which can be used repeatedly and widely used. [0004] In order ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/04
Inventor 刘伟东鲁华火陆亚萍
Owner XIECHANG ENVIRONMENTAL PROTECTION TECH CO LTD
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