SU1400644A1 - Filter for purifying liquid - Google Patents

Abstract

The invention is intended for the purification of hydraulic fluids, for example for the purification of oil in internal combustion engines. The purpose of the invention is to increase the reliability of the filter. The filter includes a housing 1 with a filter element 2 installed in its cavity, a cover 3 with inlet and outlet windows 4 and 5, a bypass 6, and a drainage valve 7. The filter cover is complete in the form of two coaxially arranged

Description

ffJ

25

with

(L

about 4

four

13

cylinders, internal 8 of which

140Q644

valve is made in

form of elastic

its lower part is connected to the lateral surface of the outer cylinder 9, and the annular cavity between the cylinders is divided by radially arranged ribs 13 into channels 14. Each of the channels communicates with a slot window formed on the lateral surface of the outer cylinder, which with its lower end is pressed to the filter element. Anti-drainage

The invention relates to filtration and can be used for cleaning the working fluids of hydraulic systems, for example for cleaning oil in internal combustion engines.

The aim of the invention is to improve the reliability of the filter.

FIG. 1 shows a filter, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 - ring of the drainage valve.

The filter includes a housing 1 with a cartridge filter element 2 installed in its cavity, a kryppka 3 with jacks 4 and Biff and 5 windows, an overflow valve 6 and a anti-drain valve 7. The filter element 2 consists of a frame and a multilayer filter material from the fabric. The frame contains coaxially mounted cylinders with openings on the side surface and central nozzles arranged coaxially with the cylinders connected to the inner cylinder by means of flanges between which there is an annular gap. The frame is equipped with a filter cloth. The cap 3 is made of polyamide with glass fiber in the form of two coaxially arranged cylinders 8 and 9. The inner cylinder 8 is connected to the side surface of the outer cylinder 9 with its lower part, the lower end 10 of the elongated shank 11 of which is pressed to the surface of the filter element. On the side surface of the cylinder 9, there are ribs 12 supported on the surface of the filter fabric in the area of the upper ends of the cylindrical spring-loaded ring mounted on the side surface of the outer cylinder and have one thickened edge 17 and ribs 18 on the outer surface. The ribs have a variable cross-section, increasing in the direction of the edge 17. The valve is equipped with a spring 20. The weight is connected to the body with a cap nut. 3 hp f-ly, 3 ill.

ditch carcass. The annular cavity between cylinders 8 and 9 is divided by radially arranged fins 13 into channels 14, each of which is connected to a 5 inlet window 4 and a slotted window 15 formed on the lateral surface of the outer cylinder 9 above the joint of the latter with the lower part of the inner cylinder 8. Channel 14 It has

0 rounded entrance edges in the zone of the entrance window 4 and smooth rotation towards the slotted window 15. The ratio of the channel length to its equivalent diameter is 3.0-3.5.

5 The inner surface of the cylinder 8 forms a central outflow channel 16. The anti-drain valve 7 is made in the form of an elastic ring made of oil resistant rubber, having a thickened rim 17 and ribs 18 on the outer surface with a variable cross-section increasing continuously towards the thicker edge 17 . Ring

5 is mounted on the outer surface of the cylinder 9, supported by a thickened edge 17 in the recess 19 and covering the slotted windows 15. The ring is spring-loaded with an annular belt spring 20. To the bottom

0 Research Institute for cylinder 9 under the bottom edge 17 of the ring is planted with a thin-walled metal sleeve 21, the upper part of which is located between the filter element 2 and the protis ring of the drainage valve 7, covering the latter. The bypass valve 6 is installed in the lower part of the housing 1 coaxially with the filter element. The body of the relief valve is placed under the cap 22, pressed by its end surface with the help of a spring 23 to the filter cloth covering the bottom flange of the frame. The filter housing 1 is threaded on the outer surface and is connected to the lid by means of a cap nut 24 with clamps 25 and a seal 26. In the lid 3, grooves 27 are inserted, which enter protrusions 28 of the housing and the sealing ring 29 and sleeve 30 are installed. carving.

Phyptre works as follows

Filtered fluid, such as oil, enters the filter through the inlet ports 4 and passes through the channels 14 in the lid 3 towards the anti-drain valve 7, goes around the upper edge of its ring and fills the internal volume of the filter. When the oil passes through the channels 14, turbulization of the flow is reduced before it enters the outer surface of the filtering element 2. The pipe passes through the filter cloth of the filter element, the cleaned oil through the gap between the flanges of the frame enters its central pipes and prices.

The main output channel 16 and window 5 are retracted to the consumer. In the case of clogging of the filter cloth, the flow of oil due to pressure opens the bypass valve 6 and passes through the channel 16 and the window 5 to the consumer. When the oil supply to the filter is stopped, the spring-loaded elastic ring of the anti-drain valve 7 fits the outer cylinder tightly and prevents the oil from leaking through the slotted windows 15. A more reliable operation of the anti-drain valve when opening and closing it contributes to making the thickened bottom edge of the ring its outer surface and the presence of an annular belt spring 20.

Due to the reliable operation of the anti-drain valve, the filter remains filled with oil, and this significantly reduces the time it takes for the clean oil to flow to the vapor.

5 5

0

five

0 g

0

friction. This eliminates the distortion and skewing of the drain valve during operation, which increases the reliability of the filter. Reducing turbulence in the flow of fluid to the filter / dust element improves the subsequent efficiency of its cleaning in it, which increases the reliability of its work, and, ultimately, contributes to an increase in the service life of the lubricated device.

Formula inventions

Claims (4)

1. A filter for cleaning a fluid, comprising a housing, a filter element, a lid with inlet and outlet, windows, bypass and anti-drain valves, characterized in that, in order to increase the reliability of the filter, its filter is made in the form of two coaxially arranged cylinders, interior of which the lower part is connected to the lateral surface of the outer cylinder, and the annular cavity between the cylinders is divided by radially arranged fins into channels, each of which is connected to a slotted window made on the lateral surface of the outer cylinder, the lower end of which is pressed to the filter element, while The anti-drain valve is made in the form of an elastic ring mounted on the side surface of the outer cylinder. 2. The filter according to claim 1, characterized in that the anti-drain valve ring is made with one thickened edge and with ribs on the outer surface, having a variable cross-sectional value, increasing in the direction of the thickened edge. 3. A FILP-1 and 2 filter, characterized in that the anti-drain valve ring is spring-loaded. 4. Filter by p. 1, characterized in that the cover is connected with the housing by means of a cap nut. Editor 0. Golovach Compiled by A. Evdokimov Tehred M. Didyk Proofreader M. Maximipschnets Order 2693/7 Circulation 642 VNISh State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 FIG. 2 Fig.Z Subscription