SU927273A1 - Self-cleaning filter - Google Patents

Description

I

The invention relates to filtration, in particular to centrifugal filters, intended for the purification of aqueous solutions from mechanical impurities and can be used in various industries in analysis systems, mainly in the separation of non-miscible liquids.

Rotating filters are known that contain a rotating sectioned drum, each section of which is designed as a filter element 1 Zi 2 3.

The disadvantage of filters is the simultaneous operation of the entire filtering surface and the limited service life of the filter elements. The closest in essence to the proposed centrifugal device for filtering suspensions, comprising a housing, a hollow rotor for receiving the FIG.

LIQUIDS with filter elements and DRG.

A disadvantage of the known device is that it does not provide self-cleaning of filter elements.

The purpose of the invention is to eliminate this drawback.

The goal is achieved by the fact that in a known device comprising a housing, a hollow rotor for receiving a filtered liquid with filter elements and a drive, the rotor is made in the form of a paraboloid of rotation, the wall and the bottom of which is made with holes, while the holes in the walls are paraboloid. The loid is made around the perimeter, at least in two rows, in the bottom of which filter elements are installed, and the bottom is equipped with a drain valve installed in the holes.

The drawing shows a filter, a general view.

Claims (3)

The filter consists of a housing 1, in which a gap is installed, the capacitance capacity 2. A rotating rotor 3 mounted in the container 2 is made in the form of a paraboloid of rotation and installed together with a heating tube t on the axis 5 of the actuator 6. Two rows are made in the walls of the rotor The openings, bottom 7 and top 8, 8 of the lower row of holes are installed. Filter elements 9- The openings of the top row remain open and through them the excess liquid is discharged. 8, a bore 10 is provided at the base of the rotor, in which a drain valve 11 is connected, connected via lever 12 to an actuator 13. Between case 1 and container 2 there is a cavity 1 for collecting excess liquid leaving through hole 8, A between the container and rotor 3 there is a cavity 15 to collect the filter that is discharged through the nozzle 16. To discharge the remaining liquid with contaminants from the rotor, the nozzle 17 serves. The initial liquid flows through the nozzle 18. The filter works in the following way. Investigated liquid is continuously supplied through the pipe 18 and the drain pipe And on the surface of the drain valve P. The actuator 5 is turned on. At the same time, the liquid rises up the wall of the rotor 3 and, falling on the surface of the filter elements 9, seeps through them and is discharged into the container 2, from where it is drained pipe 1b and mechanical impurities are deposited on the surface of the filter elements. When the entire filtering surface is contaminated, a part of the liquid rises up and is discharged through the openings 8 into the cavity 1. The actuator 13 is turned on to clean the filter elements, and through lever 12 depresses valve 11. Then all the liquid from the rotor 3 is drained through the valve hole 10 and the branch pipe 17- When draining, the fluid moving down the rotor flushes contaminants from the filter elements. The amount of filtered liquid can be chosen so that the rotational speed can be set so that only the lower parts of the filter elements work, and as they become clogged, new sections of filter elements enter. The filter can be used to separate two mixing liquids, such as water and carbon tetrachloride, with the use of a fluoroplastic porous film that freely passes carbon tetrachloride and completely retains water as the filter element. The design of the filter provides high-quality operation of the filtering elements during long-term operation and automatic mode due to forced filtration in a continuous stream. Claims. . A self-cleaning filter comprising a housing, a hollow rotor for receiving the filtered liquid with filter elements and a drive characterized in that, in order to ensure the self-cleaning of the filter elements, the rotor is made in the form of a paraboloid (the Rotation, the wall and the bottom of which is made with holes, the holes in the walls of the paraboloid are made around the perimeter of at least two rows, at the bottom of which filter elements are installed, and the bottom is provided with a drain valve installed in the hole. Niemann in the examination conducted 1.Patent (:. ff obritanii +0 11685, cl B 1 D, 1965. 2. German Patent N61396, cl. On 01 D 33/08, published 197. 3. USSR author's certificate number it298t8, cl. In Qi B 5/0, 11.01 .72.