RU2006250C1 - Water purification filter - Google Patents

Abstract

FIELD: water purification. SUBSTANCE: water purification filter has base carrying fluid-permeable vessels and granulated filtering material positioned between them, filtrate withdrawal pipe connected to central section of base and having funnel with repelling cap. The base also carries detachable cover in the form of vessel having permeable walls between which located are: granulated filtering material and distributor made in the form of circular tube with holes facing upward and shut off by valves which are in the form of flexible lugs. EFFECT: enhanced filtering reliability. 3 dwg

Description

 The invention relates to the filtering of contaminated liquids, in particular sewage-fecal, from sedimentation tanks, cesspools, etc. structures.

 A known filter for water purification, including a base with coaxially mounted water-permeable housings on it, housed between the last grounded filtering material and a compressed air distributor, and a pipe for removing the filtrate connected to the Central part of the base [1].

 This device is taken as a prototype as the closest to this by the largest number of similar significant features.

 However, when using it, the cleaning of the granular filter material with air is not effective enough due to a decrease in the duty cycle due to the stop of the operation of the device for cleaning the filter material itself.

 In addition, clogging of the compressed air distributor is possible.

 The aim of the invention is to increase the efficiency of the device due to better cleaning of the filter material, which leads to an increase in the duty cycle and improve the quality of water treatment.

 In addition, when using this invention eliminates the possibility of clogging upward and having valve openings of the compressed air distributor.

 In FIG. 1 shows a device, a section; in FIG. 2 - node I in FIG. 1; in FIG. 3 is a fragment of a compressed air distributor, top view.

 The filter for water purification consists of a reinforced concrete base 1 with coaxially mounted liquid permeable outer 2 and 3 inner housings made, for example, of mesh, perforated plates, etc. The space between the housings 2 and 3 is filled with a granular (granular) filter 4. The device has a removable cover 5. The latter is made in the form of a container with permeable walls, between which there is also a granular filter material 4. In addition, the device has a water inlet funnel 6, tanovlenii axially bodies 2 and 3 and connected to a conduit 7 for discharging the filtrate. A funnel cone-shaped cap 8 is fixed above the funnel 6 with the formation of an annular gap between them 9. A compressed air distributor (there may be several) is placed between the housings 2 and 3, made in the form of an annular pipe 10 with a supply pipe 11 connected to the compressor (not indicated) . The pipe 11 has upwardly directed openings 12. Each opening 12 is closed by a valve 13 in the form of a tongue made of an elastic material, for example rubber. The valve 13 is fixed by means of a bracket 14 with a screw 15 and a pressure bar 16.

 The device operates as follows.

 Previously, the brackets 14 are welded to the annular pipe 10 of the compressed air distributor (pipes 10, if there are several distributors) and the valves 13 are cantilevered by means of screws 15 and pressure bars 16. The annular pipe 10 is placed between the housings 2 and 3 in the medium of a granular filter material with 4 openings 12 upwards 12 . The device is mounted in the required place and included in the work. Water passing through a granular filter material 4 is purified and enters through a gap 9 into a water inlet funnel 6 and then into a pipe 7 to drain the filtrate. At the same time, changing the direction in the cap assembly 8 - funnel 6, the part of the suspensions passed through the filter material 4 is sent to the base 1, from where it is removed during maintenance work or with a special device (not shown). During operation of the device, air is continuously supplied from the compressor to the annular tube 10 of the compressed air distributor, which, passing through the openings 12 and flowing around the valves 13, causes the granules of the filter material 4 to vibrate, which are self-cleaning. The elastic valves 13 under the action of compressed air also oscillate, increasing both the area of impact on the granules and their amplitude of oscillation. Fluctuations lead to an additional effect on the granules of the filter material 4, increasing the efficiency of their self-cleaning, which ultimately leads to an improvement in the operation of the device and an increase in its duty cycle. If compressed air does not enter the annular tube 10, the valves 13, due to their elasticity and the weight of the granules of the filter material 4, block the openings 12, preventing any blockages from entering the compressed air distributor. (56) Leibovsky M.G. New filter designs for water treatment systems. Overview information. Series XM-I, M.: TSINTIHIMNEFTEMASH, 1981, p. 20-21.

Claims (1)

 A FILTER FOR WATER CLEANING, comprising a base with fluid-permeable housings coaxially mounted on it, a granular filter medium and a compressed air distributor and a filtrate discharge pipe connected to the central part of the base, characterized in that it is provided with a removable cover made in in the form of a container with permeable walls, between which a granular filter material is located, installed along the axis of the housings with a funnel connected to the pipeline for drainage of the filtrate having a baffle cone-shaped cap, and the distributor is made in the form of an annular pipe with holes directed upward, closed by valves in the form of tongues of elastic material.

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