Air filtration material filtering efficiency testing device

Abstract

The invention discloses an air filtration material filtering efficiency testing device, wherein the testing device includes a gas inlet chamber and a gas testing chamber; the gas inlet chamber is provided with a gas inlet, the gas testing chamber is provided with a gas outlet and a test port, an air filtration material and a draught fan are arranged between the gas inlet chamber and the gas testing chamber. The area of the gas inlet is greater than the area of the gas outlet. The gas inlet chamber is in a negative pressure state, and the gas testing chamber is in a positive pressure state. The air filtration material is located at an inlet or an outlet of the draught fan. The gas testing chamber is provided with a curved surface, and the test port is formed in the middle of the curved surface. The air filtration material is a single-layer, composite or pleated composite-structural material. The testing device has the beneficial effects that the structure design is concise, and a test result can be intuitively and quickly observed; no airflow blind corner exists, the uniformity of the quality of tested air can be ensured; and the gas testing chamber is still in the positive pressure state, the requirement on chamber leakproofness can be reduced, the gas turbulence is reduced, and mass production is easy to achieve.

Description

technical field [0001] The invention relates to a filter efficiency testing device for air filter materials. Background technique [0002] At present, my country has become the region with the most serious air pollution in the world, especially the Beijing-Tianjin-Hebei region, the Yangtze River Delta, Chengdu-Chongqing, and the Central Plains. The annual average concentration of PM2.5 has exceeded 70 micrograms / m 3 , more than 2 times higher than the national standard and more than 7 times higher than the WHO guidance value. On the other hand, indoor pollution has become an important threat to people's healthy home life. Statistics from the China Environmental Protection Association show that: 90% of children with leukemia have had luxury decoration in their homes, and 2.1 million children die of luxury decoration every year; Home decoration formaldehyde exceeds the standard; 70% of pregnant women have miscarriages related to environmental pollution. Indoor environmenta...

AI Technical Summary

Problems solved by technology

However, for a long time, as the most core detection index in air filtration products——filtration efficiency, it is necessary to use complex and professional measurement platforms, particle counters, weighing instruments, gas analyzers, etc., and the operation cycle is long and the data processing volume is large. , the efficiency is low, and the air filtration efficiency cannot be presented intuitively and quickly

Images