SU487654A1 - Precoat filter - Google Patents

Description

Chambers 1: 18-1: 20 and a partition of a partition equal to 1 / 2-1 / 3 of the area of the lower part of the body, bounded by this partition.

At these dimensional ratios, the lower chamber acts as a drain of high resistance, which provides the necessary hydraulic conditions, both during filtering and when washing the filter.

FIG. 1 shows the described filter; pas figs. 2 - filter section.

The filter contains a cylindrical body 1 with upper and lower chambers 2 and 3, which are formed by means of an apertured partition 4 with openings 5. In the upper chamber 2 there are disk mesh filtering elements 6 connected by means of couplings 7 with nozzles 8. Branch pipes 8 outputs from the upper chamber to the collector 9, which has communications in the form of 10--12 branch pipes. The lower chamber 3 communicates with the branch pipe 13, which in turn has a branch 14. Valves 15-19 are installed on the branch pipes.

The filter works as follows.

The clarified water, after introducing 11o into it, the required dose of auxiliary material is fed along branch 14 of the nozzle into the lower chamber 3 of the filter and through the openings 5 of the partition 4 is distributed throughout the upper chamber 2. Then the water, passing through the filtering elements 6, is clarified, collected to the collector 9 and through the pipe 12 is diverted to the place of use. During the filtering process, the valves 15, 16 and 19 are in the closed position (the direction of the water flow is shown in solid lines).

For rinsing, the water enters the filter.

through the nozzle 10 into the collector 9, it is distributed through the filtering elements 6 and, passing in the opposite direction, flushes the auxiliary material layer formed during the filtration process from the elements. Layer falls

on the perforated partition 4, the passage through its openings 5 is destroyed and through the lower chamber 3 and the nozzle 13 is removed with washing water from the filter. Flushing is done with the valves closed.

16, 17 and 18 (the direction of water movement is shown on the left half of the filter with dotted lines).

Claims (1)

Invention Formula An alluvial filter comprising a housing with inlets in the upper part and outlet in the lower and filtering elements placed inside the housing, characterized in that, in order to simplify the filter design and increase its efficiency, the housing is divided by a horizontal perforated partition into two chambers the ratio of the heights of the lower and upper chambers 1: 18-1: 20 and the living section of the partition, equal to 1 / 2-1 / 3 of the area of the lower part of the body, bounded by this partition. / -ooooooo o ° o ° oVo I o o o o o 1 oh oh oh oh oh too oh oh c  о о о о о о о о о о о о // j 00 0000 o og lOOOOuOOO OOOOOOOSi ooo ooo ooo 11 oooooooo - 00 o o o u J o o o o o about about about about - about, about, oh oh oh oh oh OS, v о о о о cf Q 0 о on о - t FIG.