Abstract
The setting process of the needling filter felt by heat can control its flatness and cohesion and can ensure its filtering precision. Based on this, the new type of needling process and the new type of heat treatment technology were developed, the setting arc structure and heat preservation measures were designed, the main roller working system for setting and driving motor system were designed, and they have been put into production. The comparative experiment results show that this device overcomes such defects as surface roughness, easy deformation, breathable unevenness, low intensity and short cycle in the traditional filter felt, which can complete the two processes of extrusion and heat setting for once, and the filtration precision, setting efficiency and the rate of qualified products have improved obviously.
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