Bag chamber air inlet device of bag type dust collector

Abstract

The invention discloses a bag chamber air inlet device of a bag type dust collector. The bag chamber air inlet device comprises a bag chamber, a filter bag, an ash hopper, a wind shield, an air inlet and a lower air inlet duct, wherein the lower air inlet duct is communicated with the bottom of the bag chamber through the ash hopper; an upper air inlet duct (6) communicated with the air inlet (3) is arranged on the upper part of the bag chamber (9). As the upper air inlet duct communicated with the air inlet is additionally arranged on the upper part of the bag chamber, a dusty air flow entering the air inlet is shunted and the resistance of the air inlet is reduced; the ascending speed of the dusty air flow entering the bottom of the filter bag in the bag chamber through the lower air inlet duct is greatly reduced, the motion direction of the dusty air flow entering the upper part of the filter bag in the bag chamber through the upper air inlet duct is consistent with the dust precipitation direction, thus the resistance of dust precipitation is reduced, the dust precipitation is accelerated, the adsorption quantity and the filtration resistance of the filter bag are reduced, the ash removal intensity is alleviated, the ash removal frequency is decreased, the service life of the filter bag is prolonged and the work efficiency of the dust collector is greatly improved.

Description

technical field [0001] The invention relates to an air inlet device for a bag room of a bag type dust collector, which belongs to the technical field of bag dust collector equipment. Background technique [0002] At present, the air inlet duct of the bag filter is usually designed at the upper center position on the side of each ash hopper. The dusty gas enters the bottom of the bag chamber from the air inlet on the upper part of the ash hopper, and under the action of the windshield, the dusty gas enters the filter bag from bottom to top, and the dust particles are retained and accumulated on the outer surface of the filter bag. The gas filtered by the bag escapes from the filter bag, and then is discharged into the atmosphere through the clean air chamber and the air outlet pipe. This one-way air intake structure, on the one hand, causes a relatively large local resistance at the air inlet, and on the other hand, makes the dust-laden air flow in the bag chamber rise at a ...

AI Technical Summary

Problems solved by technology

This one-way air intake structure, on the one hand, causes a relatively large local resistance at the air inlet, and on the other hand, makes the dust-laden air flow in the bag chamber rise at a higher speed, which causes great wear and tear on the filter bag and affects the service life of the filter bag; at the same time , because the direction of the air flow of the dust-laden gas in the bag chamber is upward, while the direction of dust deposition is downward, that is, the direction of air flow of the dust-laden gas is opposite to the direction of dust deposition, so the dust at the bottom of the filter bag Under the action of the lifting of the gas updraft, it not only increases the resistance of the dust to the natural settlement, but is not conducive to the natural settlement of the dust that is retained and accumulated on the outer surface of the filter bag, resulting in a large secondary adsorption of the dust in the filter bag and affecting the cleaning. dust effect; in addition, its pressure requirements for dust removal compressed air are also high

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