SU1579530A1 - Pressure filter - Google Patents

Abstract

The invention relates to pressure filters for the separation of suspended impurities from water and allows an increase in the heat capacity and the quality of the regeneration of the filter charge of the filters. The pressure filter contains a body with a granular load, supplying and discharging water distribution systems, a floating disk with conical nozzles in the direction of loading with a hemisphere on the upper central part facing down and in contact with the stop fixed along the axis of the body in its upper part, a twister flow in the form of a spiral blade mounted on the inner wall of the housing; means for pulsating supply of wash water, made in the form of vertically fixed along the perimeter of the lower part of the disk Astin with a gap to each other. 3 il.

Description

The invention relates to water treatment devices, in particular pressure filters for separating suspended impurities from water, and can be used to purify drinking and industrial water.

The purpose of the invention is to increase the grain size and improve the quality of regeneration of the filter loading of filters.

FIG. 1 shows the pressure filter, a general view when filtering water; in fig. 2 - the same, with the regeneration of the load .; in fig. 3 shows section A-A in FIG. 2

The pressure filter includes a housing 1 with a granular load 2 and a drainage-dispensing device in the form of a perforated partition 3 with drainage caps 4, nozzles 5-8, respectively, for introducing source water, draining filtrate, supplying and discharging wash water, a floating disk 9 with conical nozzles 10, hemisphere 11, stop 12, mounted on the axis of the housing 1 in its upper part, swirling flow in the form of a spiral blade 13 mounted on the inner wall of the housing 1, a device for pressing the disk 9 to the load 2, made in the form p installed on the upper central part of the disk 9 hemisphere 11 with a conical recess 14, facing down and in contact with the upper position of the disk 9 with the stop 12, means for pulsating supply of wash water, made in the form of vertically fixed along the perimeter of the lower part of the disk 9 plates 15 with a gap of one to the other.

Pressure filter works as follows.

The flow of source water entering through the nozzle 5 hits the hemisphere 11 and transfers part of its kinetic energy to the downward movement of the disk 9 up to the stop of the nozzles 10 on the surface of the granular load 2. At the same time, the disk is pressed against the loading with sufficient force has the greatest resistance to the flow of water and accumulates pressure. Further, the original water passes through

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the nozzle 10 and at a high speed in the form of jets penetrates into the granular load 2, through which, being distributed over the entire cross section, it is filtered and, clarified, is removed through the nozzle 6.

The interaction of the initial water jets flowing from the nozzles 10 with the surface of the filter loading 2 causes intensive loosening of the top loading layer, due to which there is no probability of the formation of a film from the retained soils on the loading surface, the suspended impurities are more evenly distributed over the loading height, which contributes to filter capacity and filter cycle duration.

After the end of the filter cycle, the duration of which is determined by the pressure loss in the load, the supply of source water through the nozzle 5 is stopped and the valve (not shown) on the nozzle 6 closes.

When the hemisphere 11 is exposed to water, the floating disk 9 rises up to the contact with the conical recess 14 of the hemisphere 11 with the stop 12. After this, the washing water is supplied through the nozzle 7, the partition 3 passes through the cap 4 and loosens the loading 2 with its simultaneous twisting with a spiral blade 13 .

Due to the swirling of water with loading under the disk 9, the specified disk, due to the presence of nozzles 10 that serve as blades, acquires a rotational motion.

Plates 15, being at the level of the inlet part of the nozzle 8 and in the immediate vicinity of its inlet part, close and open the specified nozzle when the disk 9 is rotated, which creates pulsation of the washing water. With quick opening

The nozzle 8 due to the passage of the plate 15 when it rotates, dramatically increases the flow rate of the wash water with decreasing pressure, which contributes to the intensive loosening of the filtering load and reducing the need for wash water. After the completion of the washing of the granular feed, the supply of the wash water is stopped, the pipe 8 is closed with a valve (not shown) and after deposition of the load 2 onto the partition 3 the filter cycle is repeated.

Claims (1)

Invention Formula Pressure filter comprising a housing with a filtering load, a drainage-dispensing device, nozzles for entering the source water, draining the filtrate and wash water, a floating disk with conical nozzles installed in it, the protruding ends of which are turned to the filtering load, a device for pressing the disk to the load and a means for pulsating supplying wash water, characterized in that, in order to increase the soil capacity and increase the quality of regeneration of the filter loading of the filters, the filter is equipped with a stop fixed along the axis of the housing in the upper part , and a flow curler in the form of a spiral blade mounted on the inner wall of the housing, with the fixture for 0 pressing the disk to the loading is made in the form of a hemisphere located on the upper central part of the disk with a conical notch facing down and in contact with the upper position of the disk with an emphasis, and a means for pulsating supply of washing water made in the form of plates mounted vertically around the perimeter of the lower part of the disk a gap to one another. P u 77 72 77 GTN ji .-. m .... / L, / L //// I V / / / ГГ FIG L -four: / № ,, №;,; №, // 1U //// //// 1U /  TR, 1 y t /. f f i / FIG. 2 Aa /9