Dust free breathing mask
A technology of masks and face shields, which is applied in the direction of respiratory protection devices, fire rescue, life-saving equipment, etc., and can solve the problems of high cost, high cost, and difficulty in popularizing and using gas masks
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Embodiment 1
[0017] Refer to attached figure 1 . The present invention comprises the mask 1 that fits tightly with the wearing place of the human body, and it is also provided with a sealed intake filter bottle 3 and an air outlet filter bottle 4 communicated with the mask, and the air inlet pipe 5 inlet 51 of the mask is in the air intake Above the filtrate of the filter bottle, the air inlet pipe 6 outlet 61 of the air intake filter bottle is in the filtrate, the outlet pipe 7 outlet 71 of the mask is in the filtrate of the air outlet filter bottle, and the outlet pipe 8 inlet 81 of the air outlet filter bottle is in the filtrate above.
[0018] The face mask can be provided with a soft lip or an inflatable and deflated air bag so as to seal fit with the wearing part of the human body.
[0019] It can be provided with several air intake filter bottles connected in series, and the air outlet 62 of the air intake filter bottle is above the filtrate. Such as figure 1 As shown, there are...
Embodiment 2
[0026] Refer to attached figure 2 . Present embodiment adopts three intake filter bottles, intake filter bottle 21 links to each other with face shield, intake filter bottle 22 and intake filter bottle 23 are connected in series with intake filter bottle 21 respectively, and its serial connection structure is identical with embodiment 1, Other structures are also the same as in Embodiment 1. Reference numeral 24 is an air outlet filter bottle, and reference numeral 20 is an air intake pipe of a mask, and reference numeral 28 is an air outlet pipe of a mask, and reference numerals 29, 25 are respectively air intake pipes of air intake filter bottles 23, 22, and reference numerals Number 26 is the connection air pipe of intake filter bottle 21 and intake filter bottle 23, reference numeral 27 is the connection air pipe of intake filter bottle 21 and intake filter bottle 22, and reference number 30 is the outlet pipe of air outlet filter bottle. In this way, the intake air vol...
Embodiment 3
[0028] Refer to attached image 3 . The present embodiment is provided with two air intake filter bottles 31, 32 connected in series, the air intake filter bottle 31 is a vertical bottle and is connected with the mask, the air intake filter bottle 32 is a horizontal bottle, and the gas outlet 33 of the horizontal bottle is close to the bottle. The inner end 34 of the bottle is also above the filtrate, and the inlet pipe 35 outlet 36 of the horizontal bottle is near the outer end 37 of the bottle.
[0029] It is also provided with two air outlet filter bottles 38 and 39 connected in series, the air outlet filter bottle 38 is a vertical bottle and is connected with the mask, the air outlet filter bottle 39 is a horizontal bottle, and the air inlet 40 of the horizontal bottle is near the outer end of the bottle 41 and in the filtrate, the air outlet pipe 42 inlet 43 of the horizontal bottle is near the inner end 44 of the bottle.
[0030] The air intake pipe of reference number...
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