SU565684A1 - Liquid-oleaning filter - Google Patents

Description

(54) FILTER FOR CLEANING LIQUIDS

The invention relates to filtration, in particular to bulk filters, and can be used in various areas of the nation where cleaning of liquids from mechanical impurities is required. A granular loading filter for water purification is known, which consists of a granular loading KOpus and a drainage system laid in the curvilinear depths of the bottom. The pipes of the drainage system are provided with openings directed towards the bottom of the bottom and attached to the air manifold ij. The disadvantages of the known filter are slower regeneration of the granular load I | as a consequence, a high consumption of regenerating fluid. The increase in the intensity of regeneration of traditional granular filter media is limited by the mechanical strength and wear resistance of the granules; therefore, it is necessary to frequently replace the granular filter material. The filtering material cannot be used for filtering products, the chemical relevance of which increases with increasing temperature. The liquid purification filter closest to the invention contains a cylindrical body filled with filtering material, a distribution system concentrically located inside the body, channels of the aode and drainage of the processed liquid, and input channels for the regenerating liquid located along the height of the filtering material 12. The disadvantage of such a filter is the low efficiency of the regeneration process of the filtering material, with a high consumption of the regenerating liquid. The purpose of the invention is to increase the efficiency of regeneration and the lifetime of the filter material. This is achieved by the fact that the input channels of the regenerating fluid are provided with nozzles, the axial lengths of which are located at an acute angle to the horizontal and tangent to the cylindrical surface of the distribution system, and the filtering material is made

FROM granules of metal, for example, from an alloy of titanium.

FIG. 1 image | offer filter general view | in fig. 2 shows section A-A in FIG. Ij in FIG. 3 shows a section BB in FIG. 2

The filter includes a housing 1, inside of which are located along the height of the filtering material are not communicating between, the channels

2 with holes 3 and nozzles 4, against which b plugs 5 are placed on the walls of the canal, prior to installing and maintaining the nozzles, channels 6 for supplying the treated liquid exhgi and channels 7 for outputting pulp in communication with the distribution and discharge channel 8.

The housing is closed by a lid 9, filled with granular filtering material 10, in which the distribution system in the form of a partition 11 is concentrically placed, allowing the fluid to pass through and

filter media, with channel 12 for the withdrawal of filtrate, and channel 13 for discharging | gas. The nozzles of each tusk are located along the perimeter and are installed so that their longitudinal axes are located at an acute angle to the horizon and tangently to Bi of the cylindrical surface of the distribution system.

The filter works as follows.

Process filter zhani | is carried out with closed holes 3 and channels 7 and open channels 6 and channel 12. 1 The processed liquid enters the channels O, j is distributed along the distribution and discharge channel 8, passes, free from particles: valuable particles, granular filter material , the partition 11 and through the channel 12 to the collection of filtrate.

Filtration is completed when the thickness of the sediment layer satisfies the conditions for high flow rates. The bulk of the sediment accumulates on the surface of the granular filter material, i.e. in the area of the upper channel of the nozzles, a slight portion of the sediment penetrates into the underlying layers and for some time is used as an auxiliary filter material.

The granulated filtering material is regenerated with the closed: 6 and the channel 12 and the openings open.

3 and channels with 7. Through holes 3 of channel 2 and nozzles 4, the regenerating liquid is supplied under pressure to the filtering material 10,

 located in the zone of action of the upper nozzles

the channel destroys the sediment layer and separates the top of the SRI; the most contaminated layer of granulated filter material, which is cleared of contaminants by intensive mixing and collision of the granules.

The precipitate in the form of pulp enters the distribution-slit channel 8 and is removed through the channels 7. The nozzles of the downstream canal are activated when the underlying layers are contaminated and work in a similar way to B (the pressure of the regenerating liquid for the nozzles of each channel is set out filter well-known / i devices. Nozzles of a single channel can be attached if necessary to the air manifold.

The use of granulated filtering material from metal grads, especially from titanium alloy K, with a large mass, is the least; -: the tendency of adhesion and practically non-compressible during the filtration process contributes to maintaining the established porosity of the lower layers of filtering material during intensive regeneration of the upper layer, making up a smaller part of the volume of filtering material, which allows reducing the time of the regeneration cycle and, consequently, increasing the filter performance. The use of the proposed filter for filtering chlorine alkaline solutions allows an increase in productivity by 10% with an increased product quality.

Claims (2)

1. Author's certificate, USSR № 230783, cl. In OlD 23/24,: l968. 2. USSR author's certificate MI 412921, cl. B 01 06/06, 1971. H / J FIG. 2 .-.:; -.: SOSes} BB