Dust removal principle

Release time:10-27-2018
Abstract:

Dust removal principle Bag filter The working principle […]

Dust removal principle
Bag filter
The working principle of the dust collector is as follows: the dust-containing gas enters the filter chamber from the lower open flange, and the coarser particles directly fall into the ash bin. The dust-containing gas is filtered through the filter bag, and the dust is retained in the bag table, and the clean gas passes through the bag mouth. The clean air chamber is discharged into the atmosphere by a fan. When the dust on the surface of the filter bag increases continuously, the program controller starts to work, and the pulse valve is opened one by one, so that the compressed air is sprayed and cleaned through the nozzle, so that the filter bag suddenly expands, and under the action of the reverse air flow, the bag table is given. The dust quickly leaves the filter bag and falls into the ash bin, and the dust is discharged by the ash discharge valve.
The dust collector is mainly composed of an upper box body, a middle box body, a ash bucket, an air inlet flow tube, a bracket filter bag, a blowing device, and an ash discharging device. The dust-containing gas enters each compartment ash hopper from the inlet air flow pipe of the dust collector, and under the diversion of the ash hopper guiding device, the dust of the large particles is separated and falls directly into the ash hopper, and the fine dust uniformly enters. The middle case is adsorbed on the outer surface of the filter bag, and the clean gas passes through the filter bag into the upper case and is discharged into the atmosphere through the off-line valves and the exhaust pipe. As the filtration condition progresses, the dust on the filter bag accumulates more. When the resistance of the device reaches a limited resistance value (generally set to 1500 Pa), the differential pressure setting device or the cleaning time is set by the cleaning control device. After the set value automatically closes the one-line offline valve, the electronically controlled pulse valve is opened according to the setting procedure, and the air is blown, and the pressure in the filter bag is increased by the instantaneous injection of compressed air, and the dust on the filter bag is shaken off. (Even if the fine dust can be thoroughly cleaned) to the hopper, it is discharged by the ash discharge mechanism.