Dust mask effect demonstration machine capable of realizing concentration regulation of different dust particles

Abstract

The invention relates to a dust mask effect demonstration machine capable of realizing concentration regulation of different dust particles. The dust mask effect demonstration machine comprises a demonstration cabinet and a dust particle cabinet, wherein a communicating hole matched with the dust particle cabinet is formed in the left side wall of the demonstration cabinet, a dust mask is in fit in the communicating hole and is clamped by a mask clamping mechanism in the demonstration cabinet, a dust particle picking and placing device is arranged at a part, located below the communicating hole, of the dust particle cabinet, a base plate of the dust particle picking and placing device is a ventilation plate, a dust blowing air port is formed in the lower side of the dust particle cabinet,the dust blowing air port is communicated with a dust blowing fan, a concentration regulating air cylinder which is a vertical trend and penetrates the interior of the dust particle cabinet is arranged at the upper part of the dust particle cabinet, and a concentration regulating block in seal fit with the dust particle cabinet is connected below the concentration regulating air cylinder. The dustmask effect demonstration machine provided by the invention has the advantages that the concentration regulating block is controlled to go up and down by virtue of the concentration regulating air cylinder, further volume of a dust particle cavity is regulated, the effect of regulating concentrations of the dust particles is achieved, the condition that quantity of the dust particles is too largeand beyond a blowing range of the fan cannot occur, and then the good and convenient dust particle concentration regulating effect is realized.

Description

technical field [0001] The invention relates to the field of teaching demonstration equipment, in particular to a dustproof mask function demonstration machine capable of adjusting different dust concentrations. Background technique [0002] Most of the students in school are learning theoretical knowledge. How to let students intuitively understand the role of factory protective equipment, so that students can wear factory protective equipment after entering the factory. Factory protective equipment mainly includes leather shoes, safety helmets, gloves, and dust masks. etc., the dust mask is particularly important, the structure of the dust mask is mostly as Figure 7 As shown, it includes the filter column 31, the filter sleeve 32 and the mouth and nose mask 33. However, after most students enter the factory, they think that they only need to go to the workshop for inspection. The time is not long, so most of them will directly enter the workshop with a mask. The dust conc...

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Problems solved by technology

[0002] Most of the students in school are learning theoretical knowledge. How to make students intuitively understand the role of factory protective equipment, so that students can wear factory protective equipment after entering the factory. Factory protective equipment mainly includes leather shoes, safety helmets, gloves, and dust masks. etc., the dust mask is particularly important, the structure of the dust mask is mostly as Figure 7 As shown, it includes the filter column 31, the filter sleeve 32 and the mouth and nose mask 33. However, after most students enter the factory, they think that they only need to go to the workshop for inspection. The time is not long, so most of them will directly enter the workshop with a mask. The dust concentration in the workshop is relatively high, such as some casting and forging workshops, the protective effect of the mask is low, and it is impossible to achieve a good dust protection effect. In order to enable students to have a deeper understanding of the protective effect of dust masks on high-concentration dust spaces, it is urgent to design A demonstration teaching device for the function of a dust mask that can conveniently adjust the dust concentration

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