The volume of the finished product of the filter cartridge during the manufacturing process is greatly related to the volume of the filter assembly, the total height of the dust collector and the distance between the inlet and outlet, the total height and diameter of the lower filter cartridge, the total mass of the filter cartridge, and the connection and size of the air outlet. , Filtration accuracy and a series of performance requirements related to the filter characteristics.
The outer diameter of the filter cartridge needs to be larger than the inner diameter of the filter cartridge by more than 10mm. This is mainly due to the high and narrow space. When used, the contaminated particles can settle slowly on the outer layer of the filter cartridge. This will cause the filter cartridge to accept its contaminants evenly from top to bottom.
The diameter of the inner skeleton of the cartridge is determined. In the process of use, the size of the oil hole should not affect the amount of filtered air. At the same time, it is necessary to take care of the influence of the size of the small hole on the strength of the skeleton. The total internal skeleton strength is of utmost importance. First of all, consider that the differential pressure on the filter cartridge must be supported by the skeleton, so the smaller the diameter, the higher the strength.
Folding tooth height of filter cartridge should be selected between l0~50mm. It is best to leave room for pressure difference when it is used. When the required filtration product is calculated, this area should be increased by 1 times. This is because dust pollution is unpredictable in consideration of practical work.
Cartridges mainly use their synthetic fiber-woven non-woven filter materials, according to the processing technology can be divided into continuous fiber spunbond polyester hot press and short fiber spunbond polyester hot press two categories. When the surface of the filter material is treated with water, the infiltration angle of the filter material after waterproofing should be greater than 90°. When the filter material is used for oil-repellent treatment, the filter material is treated with oil. Polyester nonwoven filters can withstand operating temperatures no lower than 120°C. For other special working conditions such as high temperature and humidity, the filter material structure selection should meet the application requirements