PM2.5 dust filtration efficiency testing machine

Abstract

OCR 09WP 24 / 03 / 2569 This invention is a PM 2.5 dust filtration efficiency testing device with a simple structure and low cost. It consists of an upper frame, lower frame, filter mounting assembly, O-rings, dust source, vacuum pump, and dust meter. And a pressure gauge; when dust from the source is sucked through the filter by a vacuum pump, the system can measure the value. The amount of dust and pressure before and after passing through the filter can be obtained. This data can then be used to calculate the filtration efficiency. And the pressure difference of the filter sheet is used to evaluate the quality of the filter material for face masks. Air or other related applications.

Claims

OCR 09WP 24 / 03 / 2569 The PM 2.5 filtration efficiency tester has specific characteristics, consisting of an upper structure (1). and the lower structure (6) made of PVC pipe with a diameter of 5 centimeters to serve as a channel for dust from The dust source (9) moves through a single dust filter (5) which is positioned between the superstructure (1) and the structure. The lower part (6) has an O-ring (4) to prevent leakage around the dust filter (5) and the dust source (9) connected to the structure. Upper part (1) Vacuum pump (7) connected to the lower frame (6) Dust meter (2) for measuring dust before and After passing through the filter at the upper structure position (1) 1 unit and the lower structure (6) 1 unit and Pressure gauge (11) for measuring pressure before and after passing through the dust filter (5) is connected to the upper structure (1) and The lower structure (6) by which dust from the dust source (5) is sucked through the dust filter (5) by a vacuum pump (7) to obtain the value The amount of dust and pressure values ​​before and after passing through the dust filter (5) for use in calculating the dust filtration efficiency and Pressure difference of the dust filter (5)

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