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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
  • 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 high tightness. The gas mask comprises a mask body; an exhalation valve and a blindfold are mounted on one side of the mask body; the exhalation valve is positioned on one side of the blindfold; intake pipes are welded on the two sides, near the exhalation valve, of the mask body; first grooves are formed in one ends of the intake pipes; sealing films are arranged in the first grooves; and mounting holes are formed in the outer walls on the two sides of the intake pipes. The gas mask is provided with the first grooves, the sealing films, second grooves and sealing rings; the sealing rings are welded on the inner wall on one side of a gas filter box; the sections of the sealing rings are U-shaped; one sides of the sealing rings are welded on the innerwall of the gas filter box, and the other sides are fixed in the first grooves of the intake pipes; the sealing films are arranged in the first grooves to guarantee the internal tightness of the first grooves; the second grooves are formed in one sides of the sealing rings; and the intake pipes are inserted in the second grooves for dual guarantee of the tightness between the intake pipes and thegas 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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