SU679224A1 - Self-cleaning continuous-action sectionated filter - Google Patents

Description

one

The invention relates to a technique for the treatment of wastewater from mechanical impurities and can be used in various sectors of the national economy.

Filters are known which consist of a casing filled with a filtering load in the form of sand or small gravel, drainage and distribution systems 1. The main disadvantage of such filters is the need to disconnect them periodically to remove them by flushing back the water that has accumulated in the filter charge of contaminants, i.e. the cyclical nature of their work.

A self-cleaning continuous section filter is also known, comprising a housing divided by a partition into sections filled with a filter charge, driven with a gearbox and a rotary nozzle for supplying wash water to section 2. This filter is the closest to the technical essence and the achieved result. A disadvantage of the known filter is that the efficiency of washing the filter charge is low.

The aim of the invention is to increase the effect of the filter filter feed by synchronizing the supply of water to the washing section and.

This goal is achieved by the fact that the filter is equipped with a tracking air-distributing device mounted on the gearbox shaft and connected to it by means of a shut-off valve with a source of compressed air.

FIG. 1 shows a general view of the filter; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. one; in fig. 4 is a view along arrow B in FIG. 3

The filter consists of a housing 1 with a delivery nozzle 2 and an outlet nozzle 3. Inside the housing 1 are installed: a lattice partition 4, horizontally a partition 5 with windows. A swiveling nozzle 6 is placed on the horizontal partition 5 and communicates with the pipe 7 for discharging the washing water. Vertical partitions 8 with a lattice partition 4 and a horizontal partition 5 form a section (on the

the drawing is six), filled with a filtering load 9 (from a slice or melsogo gravi). A drive 10 and a gearbox 11 are placed on top of the case i, through which p 12 is connected rotary rotary nozzle 6. The following air-distributing device consisting of a spool 13 having cam-shaped 14 and L-shaped oTeepcTjie, fixed frame 15, is mounted on shaft 2. side of the hole and cap 16,

closing unmovable clip 15 on top. The lateral openings of the fixed casing 15 are connected by means of tubes 17 to air systems1 18, installed in sections Hole in 1b communicates with cut-off valve 20 by means of tube 9. On the gearbox i I there is a limit switch 21, the performer 1Н1) 1Й oprai of which is in contact with cam disc 14.

 The filter works as follows. Gr knew the water through the supply nozzle 2 looked into the upper zone of the housing 1, located above the horizontal partition 5, and through the windows in it enters the section formed by the horizontal partition 5, vertical partitions 8 and a grid partition 4. Water enters all sections except the one above which is the swivel nozzle 6 operating in the flush mode. The passage of a 9-volt unloading load operating in the filtering mode, the water is purified and enters the area of the housing 1. positioning below the lattice partition 4. The water pressure in this area is maintained so that it is higher than the atmospheric pressure but below the pressure below The upper zone of the housing 1, which is located above the horizontal partition 5. Due to the fact that in the rotary pipe 6. it connects with the pipe for draining the washing water 1, al, er, air pressure in the section above which the rotary patr 6, an upward flow of water occurs, which flushes the knowledge from filtering load 9, accumulates the operation of this section in ft-evagosh mode, which are removed through the pipe to drain the wash water 7. At the moment of installation of the 5th branch pipe b over some or from the sections, the output of the L-shaped hole of the gold candle 13 is aligned with the side opening in the fixed holder 15, which communicates with the air 18 by the washing section. 8 as a result, compressed air through the tube 19, the hole in the spout e 16, the L-shaped opening of the spool 13, the lateral hole in the fixed holder 15, the tube 17 and the air system 18 is supplied to the washing section.

as a result, the removal of accumulated contaminants from the filtering load 9 is intensified.

After a certain period of time, set by the program to the commander (not shown), caused by t action when closing the contacts of the limit switch 21 from the cam disc 14, closes above the shut-off valve 20, stops the air supply and flushes the filter loading 9 only to water.

After the flushing of the filtering load 9 in one of the sections from the second unit (not shown), the command is given to turn on the drive 10, which through the shaft 12 of the gearbox 11 moves the rotary nipple 6 to the next section, etc.

Pure water from the zone of the housing 1, which is located below the reshaped partition 4, which is not used for washing the filter feed, is continuously withdrawn from the filter through the outlet pipe 3.

In the proposed filter design, due to a more complete washing of the filter load from accumulating contaminants, it is possible to achieve an increase in the cleaning efficiency of WATER by 25-30% compared with the known continuous filters. In addition, the use of air allows a 15% reduction in the required amount of wash water, i.e. economic performance of filters.

Claims (2)

1.Kl chko V.P. and Apeltsin I.E. Purification of natural waters, Stroynzdat, 1971, p. 221-224. 2. USSR author's certificate number 296577, cl. On 01 D 25/06, 1968 (prototype). networks of the Stokggyugo spirit JL: -L: -.:; Rilt {Lead  -. Flushing .,. .- .. ... Clear water 17 P § b