SU1445755A1 - Filter for purifying oil-containing waste water - Google Patents

Abstract

This invention relates to a water purification technique. The purpose of the invention is to increase the efficiency of filter regeneration. The filter comprises a housing 1, a layer 2 of elastic filtering material, a conical partition 3 with a stem 4 and openings 6 provided with rotary check valves. In the lower part of the housing, a spring-loaded conic partition 11 is installed under the filtering material. The cavity 14 is connected to the nozzle 10 to drain the oils through a pipeline 15 equipped with a check valve 16. When the filtering material layer 2 is depressed, the check valves 3 are opened and the soils collect partition 3. At the same time, the conical partition 11 is lowered, the pollution flows into the cavity 14 through the gap 20 and is squeezed through the pipeline 15 into the branch pipe 10. When the partition 3 is raised in cr ynee upper position contaminants flow into the manifold 10 and baffle 11 is raised the spring force E to the stop 13. 3 yl. R

Description

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This invention relates to a device for the treatment of waste water from oils.

The purpose of the invention is to increase the efficiency of regeneration.

FIG. 1 shows the scheme of the proposed filter, the general view (the position of the piston at the time of filtration); in fig. 2 - the same, the position of the piston at the time of extraction of the filter element; in fig. 3 shows the node I in FIG. one.

The filter includes a housing 1, a filtering layer 2 of elastic material, an upper partition 3 installed with the possibility of vertical movement and having the form of a cone, with a rod 4 and an actuator 5. In the partition 3 there are holes 6 equipped with means for blocking them in the form of check valves 7 The filter is equipped with a nozzle 8 for supplying the water to be purified, a nozzle 9 and an additional nozzle 10 for draining the oil are installed above and below the filter bed 2. Below the latter, the lower waterproof conical partition 11 is installed with the spring 12. The partition 11 is in contact with the stop 13. The cavity 14, formed by the partition 11 and the bottom of the housing 1, communicates with the pipe 10 through the pipe 15 through a non-return valve 16. The wall 3 is equipped with a drain hole 17 and its shell 18. The pipe 19 filtrate drainage.

The partition 11 is installed with a gap of 20 to the filter housing 1.

The filter works as follows.

Sewage water enters through the pipe 8 into the housing 1 and passes through the layer 2 of filtering material, which is used, for example, foamed polyurethane. The purified water is discharged through the pipe 19. When saturated with oil contaminants, the filtering material regenerates it. To do this, stop the flow of the source fluid, open the valve on the nozzle 10 and close the valve on the nozzle 19, and the actuator 5 by means of the rod 4 lowers the septum 3 and compresses the filter material. The valves 7 under the action of overpressure of the contaminants open and the contaminants exit through the openings 6 and accumulate over the partition 3. The grate in the opening b prevents the load from being expelled. Simultaneously, the partition 11 under the action of the filtering compressible material overcomes the force of the spring 12 and lowers, and pressed out of the lower part of the soil through the gap 20 between the edges of the partition 11 and the wall of the housing fall into the cavity 14 and squeeze through the pipe 15 into the nozzle 10. the valve 16 does not prevent the liquid from moving towards the nozzle 10,

but prevents this movement in the opposite direction.

After the partition 3 is lowered to the lowest position, it is raised. When this valve 7 under the action of its own mass and the mass of fluid

0, the holes 6 are rotated and closed. After lifting the partition 3 to the extreme upper position to the level of the contamination nozzle 10, through the opening 17 flow into the nozzle 10 and further into the collection container

5 (not shown).

Making the partition in the form of a cone facilitates the flow of contaminants into the nozzle 10, and providing it with a shell prevents it from tilting. At the same time, the filtering material, due to its elasticity, restores its original shape, and the spring 12 expands and pushes up the partition 11 until it touches the stop 13. As the cavity 14 increases, a negative pressure is created in it

r under the action of which the remaining contaminants from the bottom of the filter material are sucked into the specified cavity. Then, the filtration cycle is repeated, and at the first moment it is started with the valve on the nozzle 10 open, which allows removing the remaining oil in the cavity 4 and in the shell 18.

Claims (1)

Invention Formula Oily Filter 5 wastewater, comprising a housing with a filtering layer of elastic material, nozzles for supplying purified water and draining oil, located above the filtering layer, a nozzle for draining filtrate and means for compressing the filtering 0 layer during regeneration, having an upper partition with openings and means for blocking installed above the filter layer with the possibility of vertical reciprocating movement 5 of the latter, characterized in that, in order to increase the regeneration efficiency, it is provided with a lower spring-loaded waterproof conical partition, installed under the filtering layer with a gap to the walls of the housing, and an additional oil removal valve attached to the lower part of the housing when This upper partition has a cone shape and means for blocking the holes in it is made in the form of check valves. i / iZ Figure 2.