High-concentration dust pregrading device and method

Abstract

The invention relates to a high-concentration dust pregrading device and method. The high-concentration dust pregrading device is arranged between a gas-collecting hood suctioning pipeline and purifying equipment, and comprises a pipeline, baffling plates, blocking plates and a dust collector, wherein the baffling plate is arranged in the pipeline, a plurality of relatively-independent flow channels are formed in the pipeline, and dust settling grooves are formed in the side surfaces of the baffling plates; the dust collector is arranged under the flow channels, and the plurality of blocking plates are arranged along a flowing direction of airflow and towards the direction of the bottom end of the dust collector from the baffling plates, and are arranged at the bending positions of the baffling plates, so that a plurality of spaced and communicated spaces are formed in the dust collector. The high-concentration dust pregrading device and method have the advantages that large-granular dust impacts the baffling plates under the action of self inertiam and falls into the dust collecting chamber along the wall surfaces of the dust settling grooves; in order to prevent a large amount ofairflow from rushing into the dust collecting chamber and prevent the large-granular dust from being rolled up by the airflow, the blocking plates are arranged at the lower ends of baffling points ofthe flow channels; after the baffling plates are impacted for multiple times, the large-granular dust is settled gradually, so that the purpose of pre-separating the large-granular dust at the frontend of a dust remover is achieved and the purifying burden of a back-stage dust remover is reduced.

Description

technical field [0001] The invention relates to a pre-classification device and method for high-concentration dust in industrial production, and belongs to the dust suppression technology. Background technique [0002] A large amount of dust is often generated during belt conveying, which affects the working environment and air quality. The way of dust generation is generally divided into: dust generation at the transfer point and dust generation during transportation. Dust production at the reloading point is the main way of dust generation during belt transportation. During the reloading process, due to the free fall of materials or falling along the chute, large particles of materials are broken into small particles of dust, and the total amount of dust increases; the dust generated during transportation is mainly due to belt transportation. The weak air flow in the air blows the dust attached to the surface of large particles into free dust, and the total amount of dust...

AI Technical Summary

Problems solved by technology

If the purification operation is carried out directly, the processing burden of the post-stage dust collector will be increased, and the intermediate link of recovery will also be increased.

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