The dust removal cloth bag of polyester needle felt is made of 1-2.5d polyester fine denier yarn, weaving reinforced base cloth with high-strength and low elongation yarn, needle reinforcement and post-treatment process; The product not only has the characteristics of high porosity, good air permeability, acid resistance and moderate alkalinity of ordinary felt filter cloth, but also has very good advantages, so it is a variety used in felt filter materials; The gram weight ranges from 350g / m2 to 800g / m2 and the thickness ranges from 1mm to 4mm, which can be produced by Zhixin environmental protection manufacturers; Post treatment methods include calendering, singeing, heat setting, immersion drying, coating, etc; It has the characteristics of stable size, easy ash removal and long service life. The smoothness of the surface of the filter material has a great impact on the dynamic running resistance of the filter material. The initial resistance of the filter material depends on the air permeability of the filter material itself. The running resistance is many times greater than the initial resistance. The running resistance depends on the smoothness of the surface of the filter material, ash removal effect, etc
when the air flow with the same pressure and air volume is used for dust removal, the dust removal effect of the cloth bag vacuum cleaner when selecting the fabric with large ventilation as the filter bag is better than that of the fabric with small ventilation. Therefore, when the filter material reaches high filtration accuracy, how to improve the ventilation and surface smoothness of the filter material and reduce dust adhesion, Reducing the running resistance is the first topic that the filter material manufacturer should study. The surface of the equipment is resinified and smooth, and the air permeability of the needle punched filter material is more than 50% higher than that of the ordinary calendered filter material, and the surface smoothness is smoother than that of the pressed and smooth finishing
selection criteria of polyester dust removal bag parameters:
1. Determination of dust removal bag filtration area:
the dust removal efficiency of dust collector is closely related to the properties of dust removal bag, filtration speed, gas dust concentration and continuous operation time, And these factors are interrelated
2. Determination of dust removal bag specification:
dust removal bag specification is related to the inlet speed of gas entering the dust removal bag. When the dusty gas enters each dust removal bag, if the inlet speed is too fast, on the one hand, it will accelerate the secondary flying of dust removal and dust reduction, on the other hand, it will aggravate the wear of dust removal bag due to dust friction, so it can not be too large in general. Of course, the parameters of dust collector accessories such as fan air pressure and air volume supporting bag dust removal equipment will also directly affect the dust removal effect, which should also be considered together in the process of design and use. With the deepening of the theoretical and technical research of bag dust removal equipment, such as the further research of design parameters, filtration mechanism, filter material performance, equipment structure and ash removal method, bag dust removal equipment will play a role in the production of paper industry and environmental protection
