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Fire-resisting breather valve

A breathing valve and fire-blocking technology, which is applied in the field of breathing valves, can solve the problems of not being simple and convenient enough, and the installation process is complicated, and achieve the effects of simple installation, avoiding accidents, and convenient operation

Pending Publication Date: 2020-05-08
上海远安流体设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to solve the problem that the existing fire retardant breathing valve needs to replace the positive pressure valve core and negative pressure valve core of different weights to adjust the pressure value, the installation process is complicated, and the problem is not simple and convenient enough

Method used

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Embodiment 1

[0032] This embodiment provides a fire-stop breathing valve, such as figure 1 , figure 2As shown, it includes: a valve body 1; a positive pressure valve core 2, which is arranged in the valve body 1, a positive pressure valve tube 3 is arranged on the positive pressure valve core 2, and a ventilating Hole 16; Negative pressure spool 4, set opposite to said positive pressure spool 2, said negative pressure spool 4 is provided with said positive pressure spool 2 and socketed with said positive pressure valve tube 3 The negative pressure valve stem 5; the biasing member 6 is arranged in the positive pressure valve tube 3, the biasing member 6 is socketed with the negative pressure valve stem 5, and one end of the biasing member 6 is connected to the The positive pressure valve core 2 abuts against, and its other end abuts against the limit piece 7 connected with the negative pressure valve stem 5, and the limit piece 7 is driven to move up and down along the length direction of...

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Abstract

A fire-resisting breather valve comprises a valve body, a positive-pressure valve element, a negative-pressure valve element and a bias part. The positive-pressure valve element is arranged in the valve body and is provided with a positive-pressure valve pipe, and a vent hole is formed in the positive-pressure valve element. The negative-pressure valve element is opposite to the positive-pressurevalve element and is provided with a negative-pressure valve rod which penetrates through the positive-pressure valve element and is connected with the positive-pressure valve pipe in a sleeved manner. The bias part is arranged in the positive-pressure valve pipe and is connected with the negative-pressure valve rod in a sleeved manner, one end of the bias part is connected with the positive-pressure valve element in an abutting manner, the other end of the bias part is in abutting connection with a limiting part connected with the negative-pressure valve rod, and the limiting part is driven to slide up and down in the length direction of the negative-pressure valve rod. Through the fire-resisting breather valve, the problems that a positive-pressure valve element and a negative-pressure valve element of an existing fire-resisting breather valve need to be replaced with a positive-pressure valve element and a negative-pressure valve element of different weights to adjust the pressure value, the mounting process is complex, and operation is not simple and convenient enough are solved.

Description

technical field [0001] The invention relates to the technical field of breathing valves, in particular to a fire-stopping breathing valve. Background technique [0002] The breathing valve is a safe and energy-saving product that maintains the air pressure balance of the storage tank and reduces the volatilization of the medium. The breathing valve makes full use of the pressure bearing capacity of the storage tank itself to reduce the discharge of the medium. The principle is to use the weight of the positive and negative pressure valve disc to control the discharge of the storage tank. Gas positive pressure and suction negative pressure; when the medium is drawn out of the tank, the pressure in the upper gas space inside the tank drops, and when the operating negative pressure of the breathing valve is reached, the atmosphere outside the tank will open the top of the negative pressure valve plate of the breathing valve Open, so that the outside gas enters the tank, so that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/196
CPCF16K17/196
Inventor 项少聪
Owner 上海远安流体设备科技有限公司
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