SU1369762A1 - Filter for purifying a liquid - Google Patents

Abstract

The invention relates to the purification of liquids and solves the problem of reducing the consumption of wash water and improving the quality of regeneration of the filter element. The filter includes a housing with a filter element, nozzles, and a backwash unit in the form of a hollow U-ring ring installed in the gap between the filter element and the wall of the housing with the possibility of vertical movement. The inner wall of the ring is perforated, provided with a brush and fixed to the corrugated shutter. When rinsing water is supplied under the ring, it rises upwards, and the jets, through perforation of the ring wall in combination with brushes, wash and clean the filter element mesh. 1 hp f-ly, 2 ill.

Description

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The invention relates to devices used to clean liquids from impurities, and can be used in various industries of the national economy.

The aim of the invention is to reduce the consumption of flush codes and improve the quality of regeneration.

. In Fig.1, the Agena diagram of the proposed filter, a general view; in FIG. 2, node I in FIG.

Filter Contains cylinder I case 1 with filtering element 2, partition 3 and back-flushing unit A.

The filter element 2 is made in the form of a grid and mounted on the partition 3 coaxially with the housing 1 with a gap of 5 with the wall of the housing.

The inner part of the filter element 2 communicates with the inlet pipe 6, and the outlet pipe 7 is fixed to the wall of the housing 1. The backwash block 4 is made in the form of a hollow O-shaped ring 8, coaxially installed in the gap 5 between the filter element 2 and the wall of the housing 1 possibility of vertical movement. The inner wall 9 of the ring 8 is perforated, provided with a brush 10 and fixed to a coaxially arranged cylindrical corrugated elastic waterproof shutter 11. The lower end of the shutter 11 is connected to the partition 3. Pa divider 3 is placed on the partition 3 for supplying flush WATER 1.

The lower part of the outer wall 13 of the ring 8 is provided with an elastic-elastic seal 14, made of, for example, rubber. The filter element is equipped with S.tin} 1st pipe 15.

The filter works as follows.

The filter is operated in two directions: filtering and backwashing.

In the filtering mode, the source water is supplied through the nozzle 6 into the inner filter element 2, where it is filtered through its walls, enters the gap 5 and is directed through the nozzle 7 to the consumer.

With the increase of hydraulic resistance, the filtering element is regenerated. To do this, the pipe h irrekryvayut, and the pipe 12

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supply wash water and the pipe 15 is opened.

Water under pressure fills the cavity under the ring 8, passes into the ring and is pulled out through the perforations of the inner wall 9 onto the wall of the filter element 2, providing intense pa3N {biB sediment accumulated in its cells.

At the same time, under the action of overpressure of the wash water, the ring 8 rises up and there is no curtain 11 behind it, which stretches for 5 seconds thanks to the corrugations and prevents water from penetrating through the screen of the filter element at the height of the curtain.

When the ring 8 moves upwards, the brush 10 mechanically loosens and destroys the sediment in the cells of the mesh of the filter element 2, and the water jets under pressure flowing out of the perforated inner wall 9 simultaneously erode and clean the mesh of sediment. The water contaminated by the sediment is removed from the filter through the nozzle 15. When the ring 8 is moving upwards, the seal 14 bucks against the wall of the casing under excessive pressure of water and prevents the water from extending above the ring.

Thus, the filter of the lean element 2 is locally flushed over its entire height, after which the water supply through the nozzle 12 is stopped, the ring B under its own weight and the elastic forces of the corrugated shutter 11 is lowered down to its original position, and the remaining under the ring water is squeezed through the perforations of the inner wall 9 into the inner part of the filter element and continues to clean the filter element together with the brushes.

After the backwashing of the filter, the nozzles 12 and 15 are closed, the nozzle 6 is opened, and the fil1 cycle is closed.

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Claims (2)

1. filter for cleaning fluid containing a cylindrical body with a gg bottom and nozzles for supplying cleaned and rinsed water and draining the filtrate and wash water 1, concentrically mounted in the body C11. 1 filter element and medium for regeneration with brushes, ohl and DI, and so that, in order to reduce the consumption of wash water and improve the quality of regeneration, the means for regeneration is made in the form of reciprocating movement in the annular space between the filter element and the casing wall of the U-shaped hollow ring with holes in the wall facing away ten A filtering element, and a corrugated waterproof shutter attached to the ring and the bottom, with a pipe for iodine washing water attached to the bottom, and brushes mounted on the ring. 2. The filter according to claim 1, about tl and h and y - y and with the fact that between the U-shaped ring and the wall of the case is installed a seal. Fig f 12 Phie.g