SU1636020A1 - Cartridge filter-pulsator - Google Patents

Abstract

The invention relates to self-cleaning filters used in industrial water supply and chemical technology. The purpose of the invention is to intensify the process of regeneration of the filter element. The axis of the filter element installed inside the filter housing has a tube with horizontal discs mounted on top of a piston mounted in a pulsation chamber communicating with source of compressed air. The lower piston is connected by a rod with an upper piston having a smaller diameter. Inside the pulsation chamber A horizontal partition with an overflow channel is laid, to which spring-loaded flat valves are connected to the top and bottom, interconnected by rods. Thanks to this pulsation chamber, the cleaning of the filter element is intensified by increasing the vibration frequency and provides a higher filter performance, 1 silt with SS ( L

Description

The invention relates to filtration, in particular to self-cleaning filters intended for the purification of liquids from mechanical impurities, and can be used in industrial water supply systems and in chemical technology.

The purpose of the invention is to intensify the cleaning process of the filter element.

The drawing shows a filter-pulsator, a general view

The filter consists of a vertical cylindrical body 1, inside which is installed a mesh filter cartridge 2, made in the form

the core frame, which is surrounded by a filtering mesh on the outside, the filter cartridge 2 is fixed on the partition 3, the pipe 4 is skipped along the filter axis, on which the disks 5 are mounted. On the side surface of the pipe 4 between the disks 5 there are holes 6, the upper part of the pipe 4 is made without perforations Trubl 4 is passed through the housing cover and is rigidly connected to the piston 7 installed in the lower part of the cylinder 8 mounted on the housing cover of the filter. The piston 7 is connected by a rod 9 with an additional upper piston 10 whose diameter is Chez piston diameter 7

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Inside the cylinder 8 there is a horizontal partition I1 with a bypass channel 12, dividing the cylinder 8 into the upper chamber 13 and the lower chamber 14 In the chambers 13 and 14 there are installed flat valves 15 and an additional 16 interconnected by rods 17 and pressed to the partition by springs 18 and 19, which efforts are directed towards each other and thereby creating an equilibrium system. Inside the cylinder 8, a channel 20 is laid for supplying compressed air from a compressor or pneumatic line (not shown) through pipe 21 “Yes the exhaust has been exhausted The air from the lower chamber 14 serves as a channel 22, which communicates with the atmosphere. To prevent leakage of fluid from the filter, a gland seal 23 is installed on its cover. Rings 24 located between the disks 5 are attached to the core frame of the filter cartridge from its inner side. The filter is equipped with nozzles 25 - 27, respectively, for the supply of source liquid, removal of filtrate, discharge of sludge

Cartridge filter pulsator works as follows

The liquid to be cleaned is supplied under pressure through the nozzle 25 is filtered through the mesh surface of the cartridge 2 and the cleaned enters the holes 6, passes through the pipe 4 to the upper part of the filter located above the partition 3, and is discharged to the outside through the outlet 26 i, compressed air is supplied from the compressor or the pneumatic line, and the differential piston 7, 10 moves upward under the pressure of the compressed air, and the lower spring 19 is compressed, and the valves 16 and 15 connected by rods 17 move to x, connecting through channel 12 cavities 13 and 14 and closing off the discharge cable 22 "With equal pressure in the lower cavity 13 and the upper cavity 14, the differential piston 7, 10 moves downward as the area of the piston 7 is larger than the piston 10". in niltm position, blocking the access of atomic air in the bypass canal I / and the lower cavity 13 "After this, c, 1kl return-post

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The movement of the differential piston 7, 10 is repeated.

Simultaneously with the piston, a pipe 4 rigidly coupled to it vibrates with the disk 5. When the disk 5 oscillates, pulsating fluid currents arise, directed toward the net surface of the cartridge 2 "Iod, the action of these hydrodynamic impulses of pollution contaminated by the net cartridge during the filtration process are discarded from the Filtering surface and carried down into the conical part of the filter by the tangential flow of the initial fluid directed along the filtering surface. Removal of sludge from the filter is carried out periodically as e accumulation through pipe 270

In the filter, the forces generated by the springs 18 and 19 are directed towards each other, due to which they are balanced, while the differential piston and the pipe 4 with the disks 5 oscillate due to the difference in area between the lower piston 7 and the additional piston 10 o. practically, not overcoming the elasticity of the spring is used, but serves to create an oscillatory process and pulsating hydrodynamic pulses, and, ultimately, to clean the filter element from detained contaminants Thanks to this, a high frequency of vibrations of a perforated tube with discs, reaching 30 Hz, is intensified, the cleaning process of the filter element is intensified, and the efficiency of the pulsation chamber is increased.

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Claims (1)

Invention Formula A cartridge filter-pulsator containing a vertical housing with nozzles for supplying initial and washing liquid, draining filtrate and contaminants, a cartridge filter element with an axial perforated tube and flat horizontal discs mounted on it, mounted on the filter cover of the heart-shaped chamber made in the form of a closed cylinder with a pipe for compressed air iodine, installed at the bottom, and connected to a perforated pipe by a piston and a ram of a horizontal above it