Filtering device used for gas-solid separation

Abstract

The invention discloses a filtering device used for gas-solid separation. According to the device, the deformation capability of a filtering element is between that of a rigid filter pipe and that of a flexible filter bag, so that compared with the flexible filter bag, the service life of the filtering element is prolonged; and compared with the rigid filter pipe, the axial vibration is generated by the filtering element to reinforce ash cleaning. The filtering device comprises a box body; the box body is internally provided with a pore plate; a plurality of external filtering type filter bags are arrayed on the pore plate, and one end of each external filtering type filter bag is opened and the other end of each external filtering type filter bag is closed; the opening ends of the filter bags are mounted on the pore plate and the closed ends of the filter bags are connected with elastic traction devices for axially tensioning the filter bags; and the filter bags are further internally provided with inner supporting assemblies for elastically tensioning the whole bodies of the filter bags in the radial direction. The filter bags are in an axial and radial bidirectional stretching state under the common effect of the elastic traction devices and the inner supporting assemblies; and the deformation capability of the filter bags can represent the intermediate state between that of a rigid filter element and that of a flexible filter element.

Description

technical field [0001] The invention relates to a filter device, in particular to a filter device for gas-solid separation. Background technique [0002] In the field of gas-solid filtration and separation, external filter bags and external filter ceramic filter tubes are commonly used filter elements. The so-called "outer filter type" refers to the filter method in which the gas to be filtered penetrates from the outside of the filter element to the inside of the filter element to achieve gas-solid separation and purification. The structure of the filter device using the external filter bag generally includes a box body, an orifice plate is installed in the box, and a plurality of filter bags with open upper ends and closed lower ends are arranged on the orifice plate, and the upper ends of these filter bags are installed on the orifice plate , the lower end of the filter bag is suspended, and some filter devices are also equipped with a bag cage loosely fitted with the fi...

AI Technical Summary

Problems solved by technology

[0005] This application firstly aims at the problem that the advantages of the above-mentioned rigid filter tube and flexible filter bag cannot be well balanced, and provides a filter device for gas-solid separation. The deformation capacity of the filter element in the device can be between the rigid filter tube and the flexible filter bag. Between the filter bags, it can not only improve the service life of the filter element compared with the flexible filter bag, but also realize the axial vibration of the filter element to strengthen the dust removal compared with the rigid filter tube

Secondly, the present invention will provide a filter device for gas-solid separation that improves the sealing performance between the filter bag and the sealing end cover of the filter bag in reference to the problem of poor sealing performance between the filter bag and the sealing end cover at the bottom of the filter bag

Images