SU841644A1 - Liquid cleaning filter - Google Patents

Description

(54) FILTER FOR CLEANING LIQUIDS

one

The invention relates to filtration processes, in particular, filters for the purification of liquid from a suspension, and can be used for agricultural water supply, and in other industries where water purification is required.

A filter is known in which sand flows down at a constant speed through a narrow slit and filtering. goes from bottom to top from the peripheral zone to the center. The sand is sandwiched between the blinds on the sides 1.

The main disadvantage of this filter design is the penetration of sand through the blinds at the same time as the filtrate, due to the pressure drop. In addition, sand loading in the aquatic environment can be compacted. Which leads to a violation of the filter.

Also known filter, which consists of a tank with a granular filter material with a louvered partition in the center and a grid on the peripheral part of the filter. Source water for filtration is fed to the central column between the tube and the louver. Having passed through the inter-lumen slits and filtering material, the water is cleaned and enters the receiving chamber located between the side wall and the screen of the filter 2.

This technical solution has the following disadvantages. Placing the filtering from the center to the peripheral leads to an accelerated increase in losses and a shortened filter cycle, since in the central part of the filter the filter area is minimal, where there is an intensive accumulation of suspensions. During regeneration, the filtering material fills the space between the louvers and the conveying tube, which is undesirable and is an obstacle during filtration. The mesh, which prevents sand from entering the filtrate, gradually clogs up and periodically must be subjected to forced decontamination. In addition, the contaminated water during regeneration, the passage through the upper movable loading layer into the sewage system, partly lays the pollution on this layer, which requires additional time for washing.

Claims (3)

The closest in technical essence and the achieved result is a filter comprising a housing with a drainage device, inlet and outlet nozzles, a filter chamber with inclined, obliquely cut slots on the lateral surface, filled with filter loading 3. A disadvantage of the known device is the low cleaning efficiency due to the fact that during regeneration, the filtering material will inevitably be swept out of the filter chamber through inclined oblique cut slits. The purpose of the invention is to increase the efficiency of water purification by eliminating clogging during the filtering process and carrying out the loading grains during its regeneration. The goal is achieved by the fact that the lateral surface of the filter is made of elastic material and provided with flaps-flaps located above each slot, while the flap-flap is semicircular and has sharp edges. FIG. 1 shows the filter in the filtering process, a general view; in fig. 2 - the same, in the process of regeneration; in fig. 3 - side surface of the filter chamber, the total surface of the filter chamber, general view; in fig. 4 shows section A-A in FIG. 3 (in the filtering process); in fig. 5 - the same in the process of regeneration. The filter consists of a housing 1, in which .. g. (.1 / us 5, made semicircular with sharp edges. The side surface of chamber 2 is fixed with frame rods 6. In the center of chamber 2 a drainage device 7 with a discharge pipe 8 is installed. At the bottom of the filter, flushing nozzles 9 C are installed with inlet pipe 10. For rep During the regeneration period, the washing water is provided with a tubing pipe 11 and the source water enters the upper part of the filter through the nozzle 12. The filter works as follows: The water intended for filtering is supplied to the filter through the nozzle 12. The filter is filled with water passing through the filtering material as through the upper horizontal surface and through the side surface in contact with the perforated side cylindrical surface of the filtering chamber through the slots 4. The filtered water through the drainage device 7 and conductive pipe 8 flows into the collecting container. During the regeneration process, the access of water through the nozzle 12 is stopped and the washing water is supplied to the nozzles 9 through the pipe 10, and the filter material under the pressure of the washing water goes into a state that accelerates the cleaning of its particles from contaminants. Wash water saturated with contaminants is discharged through pipe 11 to the sewage system. Thus, by making the side surface of the filter chamber of elastic material and supplying it with tabs located above each slot, the efficiency of water purification is improved, since it prevents the filtering process during the filtration process and the loading grains in the process of regeneration. Claims: A filter for cleaning liquids, comprising a housing with a drainage device, inlet and outlet connections, a filter chamber with inclined, obliquely cut slots on the side surface, filled with a filter charge, characterized in that in order to increase the efficiency of water purification by eliminating colmatization in the process of filtering and removal of the loading grains in the process of its regeneration, the lateral surface of the filter IIlTir -lTIIIlIf g, the first chamber is made of elastic material and equipped with tabs -klapanami arranged above each, slit, wherein the tab is semicircular valve has sharp edges. Sources of information taken into account in the examination 1. UK patent number 1353071, cl. On 01 D, 1974. 2. USSR author's certificate 450581, cl. At 01 D 23/10 1973 3. French patent number 1587415 l. On 01 D 23/00, 1970. ten And sri.Z . Ch9ig. five