SU563993A1 - Liquid filter - Google Patents

Description

(54) LIQUID FILTER

one

The invention relates to the field of filtration, namely to liquid filters, primarily intended for cleaning liquids from mechanical suspensions forming non-sticky sediments on a filtering surface, and can be used in coal, chemical and other industries, in particular for cleaning irrigation water in coal combines.

Filters are known that comprise a housing, a filtering element and a device for cleaning the filtering element from sediment, made in the form of an inkjet element II or mechanical scrapers 2.

These filters are complex in design and require the use of a special drive to actuate the cleaning device.

Also known is a filter comprising a housing with inlet and outlet nozzles, a valve, a cover, a filter element and a device for its automatic cleaning, made in the form of a reciprocating mechanism associated with

filter element and drain valve 3j.

The disadvantage of the filter is the design layer.

The goal of the invention is to simplify the design and ensure the automatic cleaning of the filter.

To this end, the cleaning device is made in the form of a membrane installed under the lid connected by a rod to a drain valve.

Holes are made in the membrane and the cover to connect the internal cavity of the filter with the atmosphere.

The drawing shows the construction of the filter, a general view.

The filter consists of a housing 1, a filtering element 2, a lid 3 with an opening 4, a nozzle 5 for supplying water, a nozzle 6 for leaving the cleaned water, and an automatic cleaning device including mekyran 7 with openings 8 installed in the upper part of the body and rigidly tied with shtok f 9, At the opposite end of the stem, a drain valve is fixed;

blocking the drain hole 11 of the housing.

The filter works as follows. The fluid to be cleaned under pressure is fed through fitting 5, installed tangentially, into the filter housing. At the same time, the air there is vented out with liquid through the openings 8 in the membrane 7 and the openings 4 in the lid 3. When the filter housing is completely filled with liquid, the membrane 7 presses against the lid 3, blocking the openings 4 and 8 to connect with the atmosphere . The rod 9 also moves upward and the drain valve 10 closes the drain hole 11, sealing the housing. The liquid, having passed through the filter element 2, is withdrawn from the filter through the nozzle 6.

When the liquid supply is cut off, the pressure (drops in the filter. The drain valve 10 under the action of the liquid column and the weight of the rod lowers and opens the drain hole 11 and the fluid flow directed by emia cleans the filtering element and the inner surface of the casing.). When the diaphragm 7 is lowered downwards from the openings 4 and 8, the air is drawn through them into the casing, which ensures the normal flow of water to the outside.

The proposed filter design is simple to manufacture, reliable in operation, provides strength, tightness, resistance to resistance, multiple self-searching and ease of operation.

Claims (3)

1. A liquid filter comprising a housing with inlet and outlet nozzles, a drain valve, a lid, a filter element and a device for its automatic cleaning, characterized in that, in order to simplify the design to ensure automatic filter cleaning, the cleaning device 71 is made in the form of a membrane mounted under the lid connected by a drain valve “ 2. The filter according to claim 1, wherein the membrane and the cover are provided with holes for connecting the internal cavity of the filter with the atmosphere. Sources of information taken into account with the experts: 1. Author's. Bvk-detelstvo USSR №216623, class, B 01 D 25 / O4, .1967. 2.Authorical certificate of the USSR № 11О134, cl B O1 t 25/26. 1965. 3.Patent of Poland №56603, cl. 12 JD 13, I960.