SU886941A1 - Cartridge-type pulsating filter - Google Patents

Description

3

The device also allows the cleaning of the filter element by jets of water discharged from the holes of the perforated tube that passes along the axis of the filter cartridge. Due to this, the proposed cartridge filter-pulsator ensures efficient regeneration of the entire surface of the filter element, which increases its performance.

The drawing shows a cartridge filter pulsator, a general view.

The filter consists of a vertical cylindrical housing 1 inside which a mesh filter cartridge 2 is mounted, fixed on top of the partition 3 fixedly. A pulsation chamber 4 is installed on the same partition, the side surfaces of which have openings 5 for entering the purified liquid. The bottom of the pulsation chamber 4 is made in the form of an elastic membrane 6, the tube of which is fixed through a perforated tube 7. The central opening 8 of the chamber 4 contains a central opening 8, which is blocked by a poppet valve 9 fixed on the pipe 7 and passed through the valve. A disk 10 is installed on the pipe 7, while a pressure spring 11 is installed between the lower disk and the mesh bottom of the filter cartridge 2. On the side surface of the pipe 7 disks 10 are holes 12, the pipe 7 is connected from above by means of a corrugated hose 13 to the fixed pipe 13, passed through the cover of the housing 1 and connected to the pipeline wash fluid (not shown). The filter is equipped with nozzles 15, 16 and 17, respectively, for supplying the source liquid, for discharging the filtrate and for discharging sludge.

Cartridge pulsator filter works as follows.

The liquid to be cleaned is supplied under pressure through the pipe 15, filtered through the mesh surface of the cartridge 2 and the cleaned enters the apertures 5 of the pulsation chamber 4. Under the pressure of the purified liquid, the elastic membrane bends and the valve 9 moves downward opening the opening 8. The cleaned liquid passes through this hole in the upper part of the filter, located above the partition 3 and out through the pipe 16.

With the release of filtrate through the hole

8, the pressure in the pulsation chamber falls, the elastic membrane 6 occupies the initial position and the valve 9 connected to it by the tube 7 under the action of the pressure spring 11 again closes the opening 8. Then, under the pressure of the filtrate, the membrane 6 is pressed down, the valve

9 again opens the opening 8 and the cleaned liquid comes out again. Thus, when the filter is running, the membrane 6,

886941

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the valve 9 and the perforated tube 7 rigidly connected with them with the disks 10 perform reciprocating movements (pulsating) under the action of the energy of the flow of the filtered fluid without the use of external force. When the discs 10 oscillate in a vertical plane, pulsating fluid currents occur in the adjacent fluid layers, directed toward the mesh surface of the cartridge 2. Under the action of these hydrodynamic impulses of pollution, which are deposited on the mesh surface of the cartridge 2 during filtration, they are thrown off and the tangential flow of the source fluid, directed along the filtering surface, is carried down to the cone of the filter. Sludge is removed periodically through the pipe 17. Thus, in the proposed pulsator filter, regeneration is performed directly during the filtration process, which ensures its continuous operation.

If the initial fluid contains fibrous impurities or oils that are not efficiently removed from the grid surface by pulsating currents of water, then periodically as the filter cartridge 2 is contaminated into the pipe 14, the washing liquid is supplied under pressure, which passes through the corrugated hose 13 into the pipe 7 and is thrown out out of the openings 12 in the form of high pressure jets. Under the action of these jets on the mesh surface of the cartridge 2, a layer of retained impurities is destroyed, thrown off the mesh and deposited in the conical part of the filter. Periodic jet washing of the filter cartridge can be performed both during the filtration process and when the supply of the initial liquid is stopped and the filter is emptied.

Thus, the invention provides effective filter regeneration both by hydrodynamic pulses generated by disk oscillations under the action of the flow energy of the filtered liquid and by jet washing, due to which the filter has a productivity of 10-15% i higher than that of a known filter.

Claims (3)

1. A cartridge filter-pulsator containing a vertical body, a mesh filter cartridge mounted on a horizontal partition, pipes for supplying initial and washing liquids, draining filtrate and contaminants, and a pulsating chamber with an elastic bottom and lid, characterized in that, for the purpose of intensification the regeneration process and increase the filter capacity, the pulse chamber is equipped with a spring-loaded tube with flat horizontal discs at the lower end, and a hole is made in the chamber lid to drain A waste has a valve, the pipe is connected to the elastic bottom of the chamber and its lower end is perforated with the disks, placed inside the filter cartridge and connected to its bottom through a spring, and the upper end of the pipe is passed through the outlet for the filtrate and connected to the flushing fluid supply . 2. The filter according to claim 1, characterized in that the valve is rigidly fixed to the pipe. 3. The filter according to claim 1, characterized in that the pipe is connected to the pipe supply of washing liquid through a corrugated schlang. The source of information taken into account in the examination: 1. USSR author's certificate No. 555902, cl. B 01 D 29/28, 31.03.75.