SU1738305A1 - Self-cleaning filter for cleaning liquids from impurities - Google Patents

Abstract

The invention relates to equipment for the purification of liquids from contamination. The purpose of the invention is to increase the efficiency of regeneration. The filter includes a housing with filter elements in the form of drums with walls of filtering material between the perforated discs, a drainage collector and a device for regeneration in the form of boxes, each internal disc is mounted with axial movement, made split in the radial direction with the formation of gaps between its sectors. The sectors are connected to the outer disk by means of tension springs. The disk sectors are provided with pushers whose free ends are passed through the external disk and come into contact with the clamping plate of the box 6 sludge.

Description

The invention relates to equipment for cleaning liquids from contamination and can be used in various industries and agricultural production,

A self-cleaning filter for cleaning liquids is known, which includes a cylindrical body with an axial plug, filter elements mounted on a hollow shaft in the form of hollow drums, and a device for regenerating them.

The disadvantage of this filter is its relative complexity and inconvenience in operation, which limits its use.

The closest technical solution in its essence and effect achieved is a self-cleaning filter for cleaning liquids from contamination, containing a cylindrical body with

fixedly mounted filtering elements in the form of hollow drums with walls of filtering material between perforated discs connected to a discharge manifold and provided with a device for regeneration in the form of ducts connected in pairs to the hollow shaft by means of tubular brackets.

In a known filter, when filtering, it is possible to regenerate the filter material in the form of a bag of nets by backwashing the filtrate from the drum cavity into the rotating box. However, the backwashing of the filter material is performed in a compressed position between the perforated discs, which makes it difficult to wash out the sediment accumulated in its pores and leads to increased filtrate consumption.

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The purpose of the invention is to increase the efficiency of regeneration of filter elements by relieving compressive loads on the filter material during backwashing.

This goal is achieved by the fact that in a self-cleaning filter for cleaning liquids from contamination, there is a cylindrical body with fixedly mounted filter elements in the form of hollow drums with walls made of filter material between perforated discs, connected to a diversion collector and equipped with a regeneration device in the form of ducts, pairwise connected. with hollow shaft by tubular brackets, the inner disk is mounted for axial movement, made split in the radial direction, connected to the outer disk by springs and provided with pushers, the free ends of which are passed through the outer disk and in contact with the ducts by means of clamping plates fixed to the ducts .

FIG. 1 shows the filter, a general view; in fig. 2 — node I in FIG. one; in fig. 3 is a view A of FIG. 2; in fig. 4 is a view B in FIG. 2; in fig. 5 shows a section B-B in FIG. 2; in fig. 6 - section G-Y in FIG. five.

The filter contains a cylindrical body 1 with filtering elements 2 in the form of hollow drums with walls made of an elastic-elastic filtering material 3 between the perforated discs 4 and 5, a discharge collector 6 and a device for regeneration in the form of boxes 7.

The filter elements 2 are fixed in the housing 1, and their cavities 8 are connected by means of nozzles 9 with the collector 6.

The boxes 7 are pairwise connected to the hollow shaft 10 by tubular brackets 11. The shaft 10 is connected to the drive 12. Each internal disk 4 is mounted with the possibility of axial movement, is made split in the radial direction and has gaps 13 between its sectors

14. Sectors 14 of the disk 4 are made equal in width to the box 7 and connected to the outer disk 5 by means of tension springs.

15. Sectors 14 of the disk 4 are provided with pushers 16 made in the form of rods, the free ends of which are passed through the outer disk 5 and are in contact with the presser bar 17 of the box 7. The ends 18 of the presser bar 17 are bent away from the plane of the disc 5. The case 1 is provided with an inlet 19 .

The self-cleaning filter operates as follows.

The contaminated fluid through the pipe 19 enters the cavity of the housing 1, from where it is filtered through the filter material 3 into the cavity 8 of the filter element 2, and

through the pipes 9 and the collector 6, the filtrate is discharged from the housing 1.

As the pores of the filter material 3 are filled with soils, they are regenerated by backwashing. For

0 this includes the actuator 12 and rotates the shaft 10 together with the boxes 7. Due to the fact that the cavity of the box 7 communicates with the atmosphere through the bracket 11 and the cavity of the shaft 10, and in the cavity 8 creates an overpressure

5, the filtrate from the cavity 8 crosses the filter material 3 opposite the flushing box 7 and, together with the contaminants, is withdrawn through the tubular brackets 11 and the cavity of the shaft 10 from the housing 1. During rotation

0 of the box 7, the part 18 of the clamping plate 17 is bent in contact with the pusher 16 and as the box 7 is further rotated, the pushers 16 are pressed inward, pressing the sector 14 of the inner disc 4 from the outer

5 of the disk 5, and releases the filtering material 3, which is in the zone of action of the box 7, which due to its elasticity increases the volume with the expansion of pores and loosening of the soils. This facilitates washing and removal of contaminants in the washing box 7.

Thus, the box 7, in its rotation, alternately pushes the 17 pushers of 16 sectors with its bar 17

5 14 internal disk 4 and provides an effective backwash of all filter material. As soon as the sectors 14 leave the zone of the box 7, the springs 15 again compress the filter material 3 by moving the sectors 14 of the disk 4 towards the fixed disk 5, which ensures high-quality filtration of the liquid.

Technical and economic efficiency

5 of the proposed filter consists in increasing the filter cycle 1.5–2 times between the main washes by increasing the quality of regeneration of the filtering material.

Claims (1)

Formula of invention A self-cleaning filter for cleaning liquids from contamination, comprising a cylindrical housing with fixed filter elements, 5 made in the form of hollow drums with end walls of a filtering material placed between perforated inner and outer discs; a device for regenerating filter elements made in the form of pairwise connected to the hollow shaft by tubular brackets of boxes adjacent to the end walls of the drums, characterized in that, in order to increase the efficiency of regeneration of filter elements by removing compressible loads on the filter material during backwashing, the inner disk is made split in the radial direction axially movable, connected to the outer disk by means of springs and made with pushers whose free ends are passed through the outer disk and contacts comfort with boxes by clamps, mounted on boxes Shig1 five 17 15 (Reg. 2 & 0A №.J B-In g FIG. four Yr