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Gas particulate filter tank structure internally provided with one-way valve

The technology of a canister and a one-way valve is applied in the direction of breathing filter, respiratory protection device, life-saving equipment, etc., which can solve the problems of poor filtering effect, easy damage of the one-way valve, and damage to the sealing performance of the hood, etc. To achieve good protection effect, improve the use effect, improve the effect of filtering effect

Inactive Publication Date: 2018-10-09
JIANGSHAN CITY KELI FIRE FIGHTING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first purpose of the present invention is to provide a canister structure with a built-in check valve, which solves the problem that the existing air intake check valve is arranged on the hood of the fire-fighting self-seeking respirator and will destroy the hood The tightness of the valve and the problem that the one-way valve is easily damaged
[0004] The second object of the present invention is to further provide a canister structure with a built-in check valve that can prolong the contact time between gas and poisonous filter material, and solve the problem caused by the short time of air flow in the poisonous material storage chamber. The problem of poor filtering effect

Method used

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  • Gas particulate filter tank structure internally provided with one-way valve
  • Gas particulate filter tank structure internally provided with one-way valve
  • Gas particulate filter tank structure internally provided with one-way valve

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Effect test

Embodiment 1

[0020] Embodiment one, see figure 1 , a canister structure with a built-in check valve, including a canister 1. The canister is made of plastic. The canister includes an air inlet section 11 and an air outlet section 12 . The air inlet section 11 and the air outlet section 12 are hermetically connected together. Two grid plates 13 are arranged in the canister. The two grid plates divide the canister into an air inlet chamber 14 , a poison filter material storage chamber 15 and an air outlet chamber 16 . Both the air intake chamber 14 and the poison filter material storage chamber 15 are located in the air intake section. The intake section 11 is provided with an intake hole 111 communicating with the intake chamber. The air inlet is provided with an air inlet cover 112 . The air intake cover and the canister are integrally formed together. An impact post 113 is integrally formed on the outer surface of the air inlet cover. The impact post protrudes from the air intake ...

Embodiment 2

[0022] Embodiment two, the difference with embodiment one is:

[0023] see figure 2 with image 3 , The inner surface of the air inlet cover is provided with a connecting sleeve 114 .

[0024]A time-space conversion delay mechanism 4 is provided in the poison filter material storage chamber 15 . The time-space conversion delay mechanism includes a central shaft 41 and a spacer 42 with a helical structure arranged on the central shaft. The central axis extends along the distribution direction of the air inlet holes and the air outlet holes. A flexible layer 5 is arranged on the inner peripheral surface of the poison filter material storage cavity. A sealed air cavity 51 is formed between the flexible layer and the peripheral surface of the canister. The airtight cavity is filled with oxygen to generate a positive pressure so that the flexible layer is sealed against the edge of the spacer away from the central axis. A spiral air channel 43 is formed between the spacer, t...

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Abstract

The invention discloses a gas particulate filter tank structure internally provided with a one-way valve, and relates to fire-fighting equipment. The gas particulate filter tank structure internally provided with the one-way valve comprises a gas particulate filter tank, two grid plates are arranged in the gas particulate filter tank, the grid plates divide the gas particulate filter tank into anair inlet cavity, a gas particulate filter material storage cavity and an air outlet cavity, the air inlet cavity is provided with an air inlet hole, the air outlet cavity is provided with an air outlet hole, and the air inlet cavity or the air outlet cavity is internally provided with the one-way valve for controlling the air flow to enter the air outlet hole only through the air inlet and circulates in the direction of flowing out of the air outlet hole. The gas particulate filter tank structure internally provided with the one-way valve solves the problems that an existing air inlet one-wayvalve is arranged on a head cover of a fire-fighting self-finding respirator so that the sealing performance of the head cover can be damaged, and the one-way valve is prone to damage.

Description

technical field [0001] The invention relates to fire-fighting equipment, in particular to a canister structure with a built-in check valve. Background technique [0002] The fire-fighting self-seeking respirator is an appliance used to prevent smoke poisoning during fire-fighting, including a hood and a canister. The canister is used to filter the inhaled air. The existing canisters have the following deficiencies: in order to make the air flow not pass through the canister when exhaling, it is necessary to set an air intake valve in the hood for control, and setting a one-way valve in the hood will not only cause the hood to be sealed. Difficulty in time, and because the non-rigid open structure of the hood when it is not in use, the one-way valve cannot be effectively protected; the time for the air to flow in the storage chamber of the filtering poison material is short, resulting in poor poison filtering effect. Contents of the invention [0003] The first purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B23/02A62B9/02
CPCA62B23/02A62B9/02
Inventor 姜有飞
Owner JIANGSHAN CITY KELI FIRE FIGHTING EQUIP
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