Assembling method for filtering type fire-fighting self-rescue respirator

Abstract

The invention provides an assembling method for a filtering type fire-fighting self-rescue respirator. The assembling method specifically comprises the following steps that S1, integral injection molding is conducted; S2, a lower filter plate containing cigarette filter paper is mounted; S3, a first piece of glass fiber is put in; S4, a poison filtering material is filled; S5, a second piece of glass fiber is put in; S6, an upper filter plate with a sealing ring function is mounted; S7, a bottom cover is mounted; and S8, the air inlet is sealed by using an adhesive sticker. According to the assembling method, a half face mask, a valve structure and a canister are integrally designed, an injection molding machine is used for integral injection molding, the process of sleeving the canister with the half face mask is reduced, the manual assembling difficulty is greatly reduced, mounting of a half face mask valve seat is reduced, the assembling speed is greatly increased, the product quality reduction caused by manual errors is well avoided, the product quality is greatly ensured, the production input cost of an enterprise is well saved, and the development and progress of the enterprise and the industry are promoted.

Description

technical field [0001] The invention relates to the technical field of fire-fighting equipment processing, in particular to a method for assembling a filter-type fire-fighting self-rescue respirator. Background technique [0002] The traditional filtering fire self-rescue respirator is mainly composed of protective hood, half mask, canister, upper blocking cover, lower blocking cover, lower filter plate, upper filter plate, valve seat, valve cover, sealing ring and other components. Among them, the half mask, valve seat, valve cover, etc. are rubber parts, and the canister is stainless steel parts. Since the half mask is a special-shaped structure that imitates the human face and is made of soft rubber, it is difficult to have a relatively fixed shape during the mask assembly process, and it is difficult to realize assembly automation. Therefore, the traditional manual assembly process has been used in domestic mask assembly. In addition, the assembly of the valve seat, sea...

AI Technical Summary

Problems solved by technology

However, simple manual tooling and assembly of masks has defects such as high labor intensity, low production efficiency, low level of essential safety, and unstable quality.

The unstable quality caused by manual mask assembly is mainly manifested in the low qualified rate of mask assembly air tightness

Although there are many reasons that affect the airtightness, such as the matching size of parts; molds cause imperceptible defects in some parts of the parts; there are also manual assembly, and the airtightness is affected by the inconsistent operation methods of each worker.

The first two problems can be eliminated by adjusting the size of the parts and repairing the mold to eliminate the impact on the airtightness of the product, but the airtightness problems caused by each worker’s different operating methods are difficult to be satisfactorily resolved by strengthening the operation training of the workers

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