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Novel self-supplementing air supply device for positive pressure oxygen respirator

A technology of air supply device and respirator, which is applied in the direction of respiratory protection device, valve device, device to prevent accidental or unauthorized action, etc., to achieve the effect of preventing opening, stable and reliable air supply, and improving opening sensitivity

Pending Publication Date: 2021-07-27
CHINA COAL TECH ENG GRP CHONGQING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a novel self-supplementing air supply device for positive pressure oxygen respirators, which can ensure that the air supply is opened sensitively and the air supply is sufficient, and will not cause the effective volume of the air bag to decrease. minor issues

Method used

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  • Novel self-supplementing air supply device for positive pressure oxygen respirator

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "inner" and "outer" are based on The orientation or positional relationship shown in the drawings is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific way, and therefore cannot be understood as Limitations on the Invention. The terms "first", "second", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Such as figure 1 , 2 As shown, in the new self-replenishment air supply device for positive pressure oxygen respirator in this embodiment, the a...

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Abstract

The invention discloses a novel self-supplementing air supply device for a positive pressure oxygen respirator. The device comprises an air bag and an air inlet of the air bag, the air inlet of the air bag is provided with a self-supplementing valve, and the air bag is provided with a trigger device capable of moving along with the contraction and expansion of the air bag. The trigger device opens the self-supplementing valve in the contraction process of the air bag and is far away from the self-supplementing valve to close the self-supplementing valve in the expansion process of the air bag. The self-supplementing valve is arranged outside the air bag. The double-lever principle is adopted, and the self-supplementing valve is axially opened, so that the self-supplementing valve has the advantages of being sensitive in opening and sufficient in air supply during air supply.

Description

technical field [0001] The invention relates to the field of self-replenishment of oxygen respirators, in particular to a novel self-replenishment gas supply device for positive pressure oxygen respirators. Background technique [0002] Positive pressure oxygen respirator automatic replenishment valve (self-complementing valve) is an important automatic replenishment device to ensure that the respiratory system is always in a positive pressure state, ensuring the respiratory protection safety of users. [0003] The current positive pressure oxygen respirator uses an automatic supply air supply device, which is placed in the air bag and utilizes the principle of oblique opening of the rocker. The positive pressure plate moves downward under the action of the positive pressure spring to gradually shrink the airbag. When the inside of the airbag is lowered to touch the rocker of the self-replenishment valve, the rocker of the self-replenishment valve is tilted at an angle and o...

Claims

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Application Information

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IPC IPC(8): F16K3/24F16K3/30F16K3/314F16K3/32F16K27/04F16K35/00A62B7/00
CPCA62B7/00F16K3/24F16K3/30F16K3/314F16K3/32F16K27/041F16K35/00
Inventor 廖树芸汪东平舒远陈波金云波余秀清张广勋陈于金蒋德献葛亮井婷婷范晓容
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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