SU1535589A1 - Self-cleaning cartridge filter for purifying water - Google Patents

Abstract

The invention relates to filtration, namely to self-cleaning filters intended for the purification of water from mechanical impurities, and can be used in a production water supply system and in chemical technology. The purpose of the invention is to increase the degree of regeneration of the filter element. The filter contains a cylindrical body 1 with nozzles 2 supply and outlet 3 of water and outlet 4 of the sludge, divided by a horizontal partition 8 to the chambers 6 and 7, with the source water supply nozzle 2 attached to the bottom of the housing 1 tangentially. The filter element 9 is made of a perforated tube 10, on which rings of polymer filter material 11 are put on, separated from each other by impermeable dividing pads 12, which facilitate efficient cleaning of the filter element 9 with a small amount of compressed air. Above the housing 1 a drive mechanism 16 is placed, from which a hollow rod 13 with a disk 14 with conical holes is driven into a screw reciprocating motion, the hollow rod 13 being connected to a source of compressed air. Due to this movement during the regeneration of the filter element 9, an intensive disruption of contaminant particles is

Description

The invention relates to filtering, in particular to self-cleaning cartridge filters intended to purify water from mechanical impurities, and can be used in a production water supply system and in chemical technology.

The purpose of the invention is to increase the degree of regeneration of the filter element.

FIG. 1 shows a self-cleaning cartridge filter, longitudinal section; in fig. 2 shows a section A-A in FIG.

The self-cleaning cartridge filter includes a housing 1 with nozzles 2.3 and 4, respectively, for supplying raw water, draining water and for removing sludge, with the nozzle 2 being connected to the bottom of the housing 1 tangentially. Nozzles 2

3 are fitted with gate valves, and a spring valve is installed on the sleeve k

5 instant action. Casing 1 is divided into chambers of polluted water with

and purified water 7 by a horizontal partition 8. In the chamber 6 of the contaminated water there is a filter element 9 made of a perforated tube 10, on which are placed JQ rings of porous filter material 11, separated from each other by impermeable gaskets 12.

As a filtering material, polymer-compressed phenol-formaldehyde can be used.

A hollow rod 13 is connected along the axis of the filter element 9, connected in the lower part with a disk 1 with conical holes 15, and in the upper part with a drive mechanism 16. Hollow rod 13 is connected to a compressed air source (not shown). The drive mechanism 16 provides the rod 13 a screw reciprocating 25 movement.

To measure the working pressure, pressure gauges 17 and 18 are installed on the supply nozzle 2 and the water outlet nozzle 3. To remove the residual air after blowing through, a plunger is installed in the upper end of the filter housing 1

nineteen.

The filter works as follows. During the operation of the filter, the source-water flow under pressure enters the contaminated water chamber 6 through the tangential nozzle 2. The water pressure in the purified water chamber 7 is maintained such that its value is 40 above atmospheric but lower than the pressure maintained in the chamber 6 polluted water. Due to the tangential supply of source water, the filter can operate at higher rates of 5 x filtering growth as a result of a uniform distribution of suspended particles throughout the volume.

The initial water, the passage through the filtering material and the perforated tube 10, is cleaned, enters the chamber 7 of purified water and is discharged by nozzle 3 to the outside of the filter.

Upon reaching a predetermined value of the pressure drop in chambers 6 and 7, determined according to the readings of the pressure gauge 17 and 18, the filter is taken out for flushing.

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5 0 5

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The supply of source water through the nozzle 2 is stopped. The hollow rod 13 is driven into a screw reciprocating motion from the drive mechanism | 6 with simultaneous supply of compressed air with a pressure exceeding the removal of the source water. In this case, the compressed air enters through the hollow rod 13 into the disk 11, is distributed in the form of high-pressure submerged jets and tears particles of the retained contaminants from the pores of the filter material 11 and from its surface.

Due to the conical shape of the holes 15, the flow rate of compressed air at the outlet of the holes increases. When the disk k moves up and down, the streams of the air mixture ensure the removal of soil particles from the pores of the filter material 11 over the entire height evenly. And when the disk rotates due to the screw movement, the jets are rotated and rotated, which provide impulsive effects on the soil particles in the pores and on the surface of the filter material 11 at the same level, which contributes to the intensification of the process of removing soil particles element 9. The presence of separating impermeable pads 12 on the filter element 9 makes it possible to effectively clean the individual small filter compartments, using small amounts of compressed air.

By periodically opening and closing the spring valve 5 in the pipe k as a result of interrupting the jet passing through the valve 5, a series of successive compressions and rarefactions (jolts) of this medium are formed above it. The shock wave generated with this causes a shock wave with a corresponding flow in the opposite direction, which, acting together on the entire area of the filter element 9, creates additional deformations along its surface. In this case, under the cumulative effect of vibrating radial jets from the conical holes 15 of the disk 1, effective removal of particles of contaminants takes place and effective cleaning of the filter element 9 is ensured. towards the slurry pipe.

The remaining air in the filter after purging is automatically removed by a plunger 19 installed in the upper end of the filter housing 1.

After the end of the rinse, the compressed air supply is stopped, the valve 5 in the pipe k is closed, the drive mechanism 16 is stopped and the source water is supplied through the pipe 2. The cycle is repeated.

Claims (3)

1. A self-cleaning cartridge filter for water purification, comprising a cylindrical housing with water inlet and outlet nozzles, a polluted and purified water chamber, and a cartridge cartridge. 0 five 0 filter element made of perforated pipes with rings of porous filter material placed on it, separated from each other by impermeable gaskets, characterized in that, in order to increase the degree of regeneration of the filter element, the filter is equipped with a hollow rod with a conical disk located in its lower part holes and a drive mechanism connected to a hollow rod mounted with the possibility of a screw reciprocating motion. 2. Filter pop. 1, which differs from the fact that it is equipped with a sludge outlet pipe. 3. The filter according to claim 2, characterized in that the sludge discharge nozzle is provided with an instantaneous spring valve. v I m Aa eleven 15 figure 1