Rapid screening instrument for filtering efficiency and respiratory resistance of mask

Abstract

The invention discloses a mask filtering efficiency and respiratory resistance rapid screening instrument which comprises a fixing base, a case is arranged on the left side of the upper end face of the fixing base, a display box is arranged on the right side of the upper end face of the fixing base, a liftable driving rod is arranged on the lower end face of the head of the case, and an upper pasting plate is arranged at the bottom of the driving rod. A lower flitch plate is arranged at the bottom of the upper flitch plate, a pressing column is arranged below the lower flitch plate, a bottom plate is arranged at the position, corresponding to the lower flitch plate, of the upper end face of the fixing base, and a bottom column is arranged at the position, corresponding to the pressing column, of the upper end face of the bottom plate. According to the rapid screening instrument for the filtering efficiency and the breathing resistance of the mask, the adjustable movable straight plates are arranged on the two sides of the upper flitch plate, a lower flitch plate and a pressing column can be detached and cleaned conveniently, meanwhile, a fixing plate and a lifting plate are arranged behind a bottom column, and a positioning column is matched to fix the mask, so that the filtering efficiency and the breathing resistance of the mask are greatly improved. The stretching degree of the mask during detection is improved, and the screening precision is guaranteed.

Description

technical field [0001] The invention relates to the field of mask detection equipment, in particular to a rapid screening instrument for mask filtration efficiency and breathing resistance. Background technique [0002] With the continuous development of the new crown epidemic, masks have become one of the necessary supplies for people to travel. Masks can be used to filter the air entering the mouth and nose to block harmful gases, odors, droplets, viruses and other substances. Made of materials such as gauze or paper, it has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, or when working in a polluted environment such as dust, wearing a mask has a very good effect. In order to ensure the safety of the mask The quality of the factory requires screening and testing of its various performances. The mask filtration efficiency and respiratory resistance screening instrument is a mask testing equipment that can effect...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of the new crown epidemic, masks have become one of the necessary supplies for people to travel. Masks can be used to filter the air entering the mouth and nose to block harmful gases, odors, droplets, viruses and other substances. Made of materials such as gauze or paper, it has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, or when working in a polluted environment such as dust, wearing a mask has a very good effect. In order to ensure the safety of the mask The quality of the factory requires screening and testing of its various performances. The mask filtration efficiency and respiratory resistance screening instrument is a mask testing equipment that can effectively test the filtration efficiency and respiratory resistance value of the mask. It is mainly used for the production of masks. For detection and sampling inspection, the press-fit column in the commonly used screening instrument and the upper and lower panels are fixed by bolts, etc. It takes considerable time to disassemble and assemble, and it is inconvenient to clean and maintain the press-fit column. , the commonly used screening instrument directly stretches the mask manually, and places the mask between the pressing column and the bottom column, but the degree of stretching of the mask cannot be guaranteed when manually stretching directly, so some masks may be damaged due to incomplete stretching. The thickness is uneven, resulting in the stacking of the folded layers of the mask, which affects the detection value and causes inconvenience

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