Granular-layer dust precipitator

Abstract

The invention discloses a particle bed filter dust-collector, comprising an outer shell and at least one layer filtering device arranged on the outer shell along height direction, wherein, the upper part of the outer shell is arranged with a dust inlet, and the lower part of the outer shell is arranged with a dust outlet, the filtering device is provided with a separate gas reversing device connected to a gas cleaning main pipe and a back-blowing gas main pipe, which is characterized in that the filtering device comprises at least one filtering unit, the filtering unit comprises an inner shell, on the inner shell are arranged an air port and an air pipe, and inside the inner shell are arranged a particle layer and a grid plate, wherein the air port is arranged above the particle layer, the air pipe is arranged below the particle layer, and the air pipe protruding from the outer shell in transverse direction is connected to the gas reversing device. The invention has the advantages that when filtering and removing dust, the inner shell is enclosed by hot air flow, thereby the every part of the inner shell has even flatulence due to heat and even shrinkage due to cold and is provided with good heat-deformation resistance performance, accordingly, the dust collector can be used in high temperature or temperature variation environment and has wide application range.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a particle bed filter dust remover. Background technique [0002] With the development of social economy, the industrial development is becoming more and more rapid, but there is also a lot of dust brought in by industrial production. These dusts mainly exist in the gas, so it is necessary to install corresponding dust removal devices. The particle bed filter dust removal device has unique advantages in the field of high temperature gas dust removal because it can use high temperature resistant filter materials, such as quartz sand. However, the traditional particle bed filter and dust removal device needs to use a rake and a transmission mechanism when blowing back to remove dust, and the dust removal effect is not good, and the work efficiency is not high. [0003] The utility model patent specification with the patent No. ZL88201515.X discloses an electric particle layer dedusting dev...

AI Technical Summary

Problems solved by technology

However, the traditional particle bed filter and dust removal device needs the help of rakes and transmission mechanisms when blowing back to remove dust, and the dust removal effect is not good, and the work efficiency is not high

[0003] The utility model patent specification with the patent No. ZL88201515.X discloses an electric particle layer dedusting device for boilers burning low-quality coal. The device consists of the device, which cancels the traditional rake and transmission mechanism, and has a relatively simple structure. The plate is heated unevenly and easily deformed to cause material leakage and air leakage. It cannot be applied to occasions with high temperature or large temperature fluctuations.

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