Method and apparatus for prededusting

Abstract

The invention discloses a method and an apparatus for prededusting. The method allows a dusty gas to enter into the prededusting apparatus at a tangent from an inlet. Dust in an airflow moves along the inner wall of a cylinder body, slides into a dust collector and is discharged from a dust discharge port because of centrifugal force generated by airflow rotation. A conical reflection screen is arranged in the cylinder body, most of the airflow entering into the cylinder body is reflected upward because of the effect of the reflection screen, and only a small amount of the gas enters into the dust collector with dust particles, so a case that the dust which has been already separated is rewinded up and taken away by a secondary gas can be prevented, thereby the dedusting effect is improved. A certain gap between the reflection screen and the cylinder body is kept, so the dust can enter into the dust collector through the gap; and simultaneously an air-vent is arranged on the top of the reflection screen, so the small amount of the gas entering into the dust collector can enter into the cylinder body through the air-vent. So the apparatus has the characteristics of low equipment cost, stable working condition, and simple and convenient maintenance.

Description

technical field [0001] The invention relates to a method and device for pre-dust removal, belonging to the technical field of dust removal and purification. Background technique [0002] In industrial production, a large amount of dust will be generated during the transportation, crushing and production of raw materials and finished products. In order to protect the environment and reduce the loss of raw materials, a dust collection and purification system is essential. For some places with high dust concentration, only the first-level bag filter is used to load the bag too much, and frequent cleaning will also cause damage to the bag. We need to set up a pre-dust removal device in front of the bag filter to remove most of the coarse dust. At present, the commonly used cyclone dust collector has simple structure, low equipment cost, less maintenance workload, and is widely used. However, due to the structure of the cyclone dust collector, the dust-containing gas touches t...

AI Technical Summary

Problems solved by technology

However, due to the structure of the cyclone dust collector, the dust-containing gas touches the bottom and rises at the ash hopper, and the separated dust is carried out, and the dust removal effect is not good.

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