Industrial vacuum cleaners are a kind of matching or cleaning equipment commonly used in the industry. They can be used for waste collection, air filtration and purification, and environmental cleaning in industrial production processes. At the same time, it can be used together with industrial production equipment to absorb dust and debris generated during production to ensure the cleanliness of the working environment and the health of employees. For example, industrial vacuum cleaners are used in large quantities in the textile and chemical industries, reducing the risk of some occupational diseases. Industrial vacuum cleaners mainly separate solids and air through filter media. Industrial vacuum cleaners commonly used in the market generally have one-fold filtration or double-filtration. For example, wet and dry type is filter element single filter filter type, dry type industrial vacuum cleaner is through filter element. And the filter bag double filtration system, the general filter accuracy of the filter element is about 10 microns, the precision can be less than 1 micron by laminating or using special materials, the filter cloth is often made of non-woven fabric or polyester needle felt, through different production The process keeps the accuracy at around 0.5 microns.