SU637497A1 - Device for cleaning filter and drain pipes - Google Patents

Description

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The device relates to the field of groundwater exploitation in water supply and land improvement systems and can be used to clean water well filters as well as drainage pipes from clogging sediments preventing the flow of water into these structures and reducing their performance.

A device is known that is a water pump to which the pressure pipe is lowered in the well. When using 1i of this device, the flow of water injected by the pump into the well passes through the working surface of the filter and washes away sediments clogging the filter openings. When rinsing the filter with this device, the filtering surface is not efficiently cleaned, since the water flow passing through it has a low speed and, accordingly, a small kinetic energy I.

The closest in technical essence and the achieved effect is a device for cleaning filter and drainage pipes, including a cylindrical tank with a perforated side surface, a pump and a pipe connecting the tank to the pump. During the operation of this device, water is pumped up by the pump, it flows through a pipe. in chi.chindra and ejected from the holes in the form of jets with significant kinetic energy. The impact of these water jets on the set surface of the filter and drainage pipes leads to the destruction of sediments and their separation from the filtering surface 2.

However, when the filters are clogged with dense sediments, they do not provide an effective cleaning of the working surface, since the hydraulic effect of the water jets for a long time is insufficient to destroy the sediments.

The aim of the invention is to intensify the cleaning process of filter and drainage pipes.

This goal is achieved by the fact that the proposed device is equipped with a screen, 11 1 m made in the form of a cone and a plate placed at the top of the cone, and the bottom of the tank is made with a hole and provided with a nozzle made in the form of a confuser placed in the hole. The device is also equipped with rods, the upper part of which is placed under the bottom of the tank, and the bottom part is attached to the screen. The drawing shows a longitudinal section of the proposed device. It consists of a cylindrical tank I with holes 2 on the side surface, pipe 3, which communicates with the pump (not shown). The bottom of the tank I has a central opening inside of which, by means of a threaded connection, nozzles 4 are fitted. On the side surface of the housing I in its lower part a detachable cylinder 5 is attached by means of a threaded connection, to which 3- 4 rods of the holder 6 are attached with the shield -7 in the form of a cone. At the top of the cone 7, a resilient plate 8 is fixed, the pointed free end of which is located opposite the nozzle 4. The device works as follows. When cleaning the filter or drainage pipe, the proposed device is installed last, and pressurized water 1 is pumped through the pipe (L-12 atm. a portion of the incoming water is ejected in the radial direction from the holes 2 in the form of jets, which erode the sediments clogging the filtering surface. When the water jet interacts with the plate 8, the latter oscillates with the ultrasonic frequency (more than 20,000 vibrations in 1 s) together with the volume of water adjacent to the plate 8, which fills the filter or drainage pipe. of the filtering surface, leads to their intensive destruction and dispersion. The cleaning effect of the filtering surface increases due to the fact that

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Claims (2)

The 00,000 nozzle 4 and the stream flowing over the plate 8, when interacting with the screen 7, spreads in the form of radial flows and additionally flushes out the contaminants from the adjacent filtering surface. After cleaning the first zone, the device is moved along the filter tube and is installed in such a position that the radial water jets ejected from the openings 2 act on the filter surface previously treated with ultrasonic vibrations and the latter act on the next section of the filter surface. In this way, the filter or drainage pipe is successively cleaned along its entire length, both by the action of radial water jets and by ultrasonic vibrations. Claim 1. A device for cleaning filter and drainage pipes, comprising a cylindrical tank with a perforated side surface, a pump and a pipe connecting the tank with a pump, characterized in that, in order to intensify the cleaning process due to fluid oscillations, the device is equipped with a screen made in the form of a cone and a plate placed at the top of the cone, and the bottom of the container is made with a hole and provided with a nozzle, in the form of a confuser placed in the hole. 2. The device according to claim 1, characterized in that it is provided with rods, the upper part of which is placed under the bottom of the container, and the lower part is attached to the screen. Sources of information taken into account in the examination: 1. Reference book on special works. Design and construction of wells for water supply, M., 1970, p. 73-75. 2. USSR author's certificate number 19541, cl. E 03 B 3/15, 1928.