Filtration device for gas-solid separation

Abstract

A filtering device for gas-solid separation, comprising: a box body (110). A pore plate (120) is provided inside the box body (110); the pore plate (120) is provided with a plurality of external filtration type filtering bags (130) in an arranging manner, each of the external filtering bags （130） comprising an opening end and a closed end; the opening ends of the filtering bags (130) are arranged on the pore plate (120); the closed ends of the filtering bags (130) are connected with an elastic traction device (170) used for axially tensioning the filtering bags (130); and the filtering bags (130) are internally provided with inner supporting components (131) used for radially and elastically tensioning the whole filtering bags （130）. The filtering bags (130) are in a bidirectional tensile state, namely an axial tensile state and a radial tensile state, under the combined action of the elastic traction devices (170) and the inner supporting components (131), and the deformation capability of the filtering bags (130) is between a rigid filtering element and a flexible filtering 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

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