SU862429A1 - Filtering element of bag filter - Google Patents

Description

This invention relates to a dust collection technique and can be used in the industrial sectors where fine cleaning of gases from dust is required.

The filtering elements f are cylindrical in form of flexible filtering material, which are fixed in the upper part of the housing with a closed end, and the lower end are connected to the open branch pipe for supplying the plug gas.

Dust-laden gas enters the filter element and after cleaning is removed from the outside of the filter material. The latter is periodically regenerated from the collected dust by shaking, blowing gas in the opposite direction or other known methods.

Due to the large free volume of cylindrical filter elements (sleeves). Such filters have a low packing density of the filter material.

This disadvantage is partially eliminated in filter elements with double sleeves or when the sleeve is divided along the length of a series of cylinders of smaller diameter.

The known filtering element of the bag filter 2j is divided by longitudinal seams along the length of 3 or 4 cylindrical compartments, with the seams ending at some distance from the upper and lower ends. The upper end is connected to the plug, and the lower one covers the open pipe for feeding dusty gas inside.

In this filtering element, to prevent material from touching during filtration, the width of the seam is increased, which leads to a decrease in the compactness of the placement of the filtering material. In addition, the flow of contaminated gas from the bottom through cylinders of small diameter increases the velocity of gases at the entrance to the filter element and reduces the efficiency of its regeneration.

The aim of the invention is to improve the regeneration conditions and increase the reliability of the filter element.

The goal is achieved in that the filter element is provided with an internal cylinder made of mesh.

FIG. 1 shows the filter element / in FIG. 2 shows a portion of the filter element in a bloated state. In FIG. 3 and 4 are cross sections of the filter element in bloated and compressed states, respectively.

The filtering element contains a filtering sleeve 1 connected to the upper plug 2 and the lower branch pipe 3 by means of clamps 4. The inner cylinder 5 is attached to the sleeve 1 by double seams so that this sleeve forms, in an inflated state, around the cylinder 5p of cylindrical compartments 6 that do not touch each other.

When filtering, the dusty gas through the pipe 3 enters the end of sleeve 1 and is distributed to the compartments 6 and inside the cylinder 5. The dusty gas enters the compartments b both through the ends and through the mesh walls of the cylinder 5. After deposition of the pierce on the inner surface of the sleeve 1, the cleaned gas is removed from the filter.

In the case of regeneration of the filter element by the gas flow in the opposite direction, the latter compresses the filter element, a section of collected dust, and is discharged through the nozzle 3.

The proposed filter element can be installed instead of cylindrical sleeves in widely used filters with regeneration by reverse blowing and mechanical shaking without any design changes. corner

FIG.

Claims (1)

HOSE FILTER FILTER ELEMENT, comprising a filter sleeve divided into cylindrical compartments, characterized in that, in order to increase reliability and improve regeneration conditions, it is provided with an inner cylinder made of mesh. (eleven).