SU488597A1 - Filter for cleaning liquids - Google Patents

Description

(54) FILTER FOR CLEANING LIQUIDS

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The image relates to filtering liquids and low concentrated suspensions that are inert to the filter material, and can be used, for example, to clarify water in industrial and field water supplies.

A filter for cleaning liquids from mechanical impurities is known, comprising a housing, an axial support and a filter bag mounted on it, including elastic porous disks, intermediate and end washers, one of which is fixed and another connects to the mechanism of longitudinal reciprocating movement.

A feature of the known construction is the need to install gland seals to eliminate leakage of elastic porous disks during regeneration, which is carried out by their cycling and compression. However, cajbHHKOvshnyi1Sh do not exclude leaks because of their wear and tear and, moreover, require significant additional effort to compensate for the forces of friction. The known kinematic systems for cycling / deformation of elastic porous disks increase the dimensions of the filter and, moreover, do not provide for uniform deformation of these disks making up the bag.

The purpose of the invention is to increase the reliability of the design.

For this, the support of the filter bag is made in the form of telescopically mounted truncated cones fastened with intermediate washers.

FIG. 1 shows the proposed filter during the filtration period, a longitudinal section; in fig. 2 - the same during the regeneration period.

The filter includes a housing 1 with a lid 2, a manhole 3 and nozzles 4-6, respectively, for introducing the initial liquid, withdrawing the purified liquid and supplying it countercurrently, as well as for draining contaminants. In the case is placed a package of elastic porous disks 7, separated by intermediate washers B. The package is placed between the end washers 9 and

10, of which the first one is not movably installed, but the second is associated with a longitudinal reciprocating displacement mechanism implemented, for example, in the form of a movable hydraulic cylinder 11 and a fixed piston 12 fastened to it.

The disc pack 7 is supported by telescopically mounted truncated cones 13, which are engaged with each other by means of grooves; -14, pins 15, fastened with washers 8, between which springs 16 are mounted.

During the filtering period, the contaminated liquid enters the filter housing through the nozzle 4 and passes through porous disks 7 from the outside to the inside of the bag, being cleaned from mechanical impurities. The clarified liquid is collected in the cavity of the bag and is discharged from the filter through the pipe 6.

During the regeneration period, the industrial fluid or filtrate is fed through the nozzle 5 into the filter housing. At the same time.

through the nozzle 17 into the hydraulic cylinder 11 noj- is given cyclically a liquid, under the action of which it moves along the axis

j filter, pressing down the porous discs 7 and intensive removal of contaminants from its pores.

When disconnecting hydrocylnndra under

the action of springs and pressure in the filter system returns to its original position. The flushing fluid together with the contaminants is removed from the filter through the pipe 6.

Subject invention

A filter for cleaning liquids, containing a housing, an axial support and a filter bag mounted on it, including elastic porous disks, intermediate and end washers, one of which is fixed and the other is connected to the longitudinal return-retraction mechanism; translational movement, about the fact that, in order to increase the reliability of the design, the support is made in the form of telescopically installed truncated cones attached to intermediate washers.

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