SU717293A1 - Apparatus for cleaning water intake well filters - Google Patents

Description

The invention relates to the field of water supply and can be used to clean the inside of the filters of the solids suspended solids that accumulate: fine sand and clay particles that have penetrated the filter through the filtering surface. A device for cleaning wells is known; its drain pipe is lowered into the well. Inside the discharge pipe there is a gas pipe. A high-pressure pipe with a jet nozzle located near the filter passes through the downpipe. A stream of liquid or gas under high pressure is sent through the nozzle to clean it 1. The disadvantage of this device is the lack of reliable ones. means of removal of sediment from the well ..- The closest to the proposed device to the technical essence and the achieved result is a device for cleaning water intake filters, including a tubular perforated body, an inner pipe and an nozzle located in the lower part with an axial channel (The disadvantage of this device is its complex construction and cyclical operation, washing out the accumulated sludge without transporting it outside the filter. The aim of the invention is to prevent the filter from clogging and during operation. This is achieved by the fact that the nozzle is made in the form of a truncated cone with elastic plates in the upper part and with teeth in the lower part, mounted for movement and forms an annular nozzle with the inner tube, and the inner tube is made conical. 1 shows a device, a general view, in Fig. 2 - a movable nozzle, top view. The device consists of a conical pipe 1, which is installed in the filter of a well 2, and the lower end of the conical pipe does not reach the bottom of the filter by an amount equal to two. m diameter lower portion of the tapered tube. In the space between the end of the conical tube and the bottom of the filter is a movable spring-loaded

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nozzle 3, made of plastic and having rippers 4 in the lower part of the elastic teeth, and elastic plates 5 in the upper part of the t; ,

 The device works as follows. . The pump is also turned on in the annular space between the pipe 1 and the nozzle 3 of the solenoid valve, which forms

 reduced pressure, creating a ULS.

M dl move us: hell up. When the JBBepx moves, the elastic teeth of the 4 nozzles loosen the sweat and simultaneously rotate the sand particles, which facilitates their transportation through the axial channel in the nozzle into the conical tube. In the future, when the pump is in operation, solid particles penetrating into the filter cavity due to sufficient transporting speeds: remove the filter through the conical pipe on top; chtb; I look for Shet-ShkbpLenie them in the cavity of the filter.

In npotiecce the operation of the device nozzle 3

It can ° occupy a different position from,; conical tube axis depending

however, it is equally effective in carrying out its functions in the case of lodges.

The advantages of the proposed device are as follows: Create a condition for the accumulation of sediment. f ... ii.,: 5

717293

filter and ensures uniform operation of the entire perforated surface of the filter; the device can be used on both new and existing filters.

With the use of the proposed device eliminates the need to build filters with sumps.

Claims (2)

Invention Formula A device for cleaning water intake filters, comprising a perforated tubular body, an inner tube and an nozzle with an axial channel located in the lower part, characterized in that, in order to prevent the filter from being clogged during operation, the upper part and with the teeth, at the bottom, is mounted with the possibility of axial movement and forms an annular nozzle with the inner tube, the inner tube being made conical. Sources of information taken into account in the examination 1. US patent number 3853176, cl. 166-223, pub. 1975. 2. USSR author's certificate No. 380802, cl. E 03 B 3/18, 1971. , y.G "z.5y1y (; 9--, .i ,  e.  B j, -v - -u - ".Z