Convenient underground breathing apparatus
A respirator, a portable technology, applied in the field of respirators, can solve troubles and other problems, and achieve the effect of safe and convenient use, convenient storage, and scientific and reasonable design structure
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[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0017] See figure 1 , figure 2 , image 3 with Figure 4 , The present invention provides a technical solution: a portable downhole breathing apparatus, including a backrest 5, a retractor 7 is arranged in the middle of one side surface of the backrest 5, a back strap 6 is wound on the retractor 7 and one end of the back strap 6 A clamping block 9 is fixed by screws. A clamping slot 8 is arranged under the retractor 7. The clamping slot...
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