Gas mask with high tightness

A gas mask and sealing technology, which is applied in the direction of breathing masks, life-saving equipment, respiratory protection devices, etc., can solve the problems of insufficient sealing, inconvenient replacement of filter boxes, etc., and achieve the effect of easy replacement, simple disassembly and improved sealing

Inactive Publication Date: 2018-04-13
宁波市河清源技术转移服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a gas mask with strong airtightness to solve the existing problems of insufficient airtightness and inconvenient replacement of filter boxes

Method used

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  • Gas mask with high tightness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of formaldehyde scavenger, the method comprises the following steps:

[0027] Step 1. Weigh 9.37g of zinc nitrate hexahydrate and dissolve it in 14g of deionized water to make a salt solution containing zinc. Slowly drop the solution onto the alumina carrier (volume ratio 4:3), and then let it stand at room temperature Aging for 5 hours, drying at 100°C for 6 hours, and roasting at 400°C for 8 hours to obtain an adsorbent precursor containing zinc oxide;

[0028] Step 2, take by weighing 9.35g copper nitrate trihydrate and be dissolved in 14g deionized water, be made into the saline solution containing copper, slowly drip this solution on the above-mentioned obtained adsorbent precursor containing zinc oxide (volume ratio 1: 1), then standing and aging at room temperature for 5 hours, drying at 100°C for 6 hours, and roasting at 400°C for 8 hours to obtain a bimetallic formaldehyde adsorbent precursor containing copper oxide and zinc oxide;

[0029...

Embodiment 2

[0034] Step 1. Weigh 9.37g of zinc nitrate hexahydrate and dissolve it in 14g of deionized water to make a salt solution containing zinc. Slowly drop the solution onto the alumina carrier (volume ratio 3:4), and then let it stand at room temperature Aging for 5 hours, drying at 100°C for 6 hours, and roasting at 400°C for 8 hours to obtain an adsorbent precursor containing zinc oxide; the rest of the preparation was the same as in Example 1.

Embodiment 3

[0036] Step 1. Weigh 9.37g of zinc nitrate hexahydrate and dissolve it in 14g of deionized water to make a salt solution containing zinc. Slowly drop the solution onto the alumina carrier (volume ratio 4:3), and then let it stand at room temperature Aging for 5 hours, drying at 100°C for 6 hours, and roasting at 400°C for 8 hours to obtain an adsorbent precursor containing zinc oxide; the rest of the preparation was the same as in Example 1.

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Abstract

The invention discloses a gas mask with strong sealing performance, which comprises a mask main body, an exhalation valve and an eye mask are installed on one side of the mask main body, the exhalation valve is located on one side of the eye mask, and the mask main body is adjacent to Both sides of the exhalation valve are welded with intake pipes, one end of the intake pipe is provided with a first groove, the inside of the first groove is provided with a sealing film, and the outer walls of both sides of the intake pipe are provided with Mounting hole, the present invention is provided with the first groove, sealing film, second groove and sealing ring, and the sealing ring is welded on one side inner wall of air filter box, and the section shape of sealing ring is U-shaped, and one side is welded on On the inner wall of the air filter box, the other side is fixed in the first groove of the intake pipe. A sealing film is arranged in the first groove to ensure the sealing inside the first groove, and a second sealing ring is provided on one side of the sealing ring. The air intake pipe is inserted into the second groove to double ensure the sealing between the air intake pipe and the air filter box.

Description

technical field [0001] The invention belongs to the technical field of gas masks, and in particular relates to a gas mask with strong airtightness. Background technique [0002] A gas mask is a personal special labor protection product, and it is also an individual protective product. It is worn on the head to protect people's respiratory organs, eyes and face, and is a personal protective equipment to prevent poisonous gases, dust, bacteria, toxic and harmful gases or steam and other toxic substances. , Gas masks are widely used in petroleum, chemical industry, mining, metallurgy, military, fire protection, emergency rescue, health and epidemic prevention, technology and environmental protection, machinery manufacturing and other fields, and can also play an important role in cities with severe smog and photochemical smog. Personal respiratory protection. [0003] However, the gas masks currently available on the market have some defects during use, such as insufficient ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B18/02A62B18/08A62B7/10
CPCA62B18/02A62B7/10A62B18/08
Inventor 张敏李卓
Owner 宁波市河清源技术转移服务有限公司
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