RU2245735C1 - Filter for continuous cleaning of liquid - Google Patents

Abstract

FIELD: filtration of liquids.

SUBSTANCE: proposed filter has housing partially filled with cleaning reagent and made in form of cylindrical shell coupled with hollow cone whose vertex is directed downward and separating cone mounted in lower part of housing with vertex directed upward, it forms distributing circular slot together with hollow cone; filter is also provided with collector for delivery of liquid to be cleaned to cleaning reagent, air lift for raising the contaminated cleaning agent from hollow cone to upper part of filter for flushing and returning to housing, as well as unit for flushing the cleaning agent made in form of inner part with circular outer recesses and projections and outer part embracing the inner part; outer part has mating circular inner projections and recesses forming passage for down flow of cleaning reagent and counter flow of liquid for flushing. Filter is provided with at least one helical partition mounted stationary in housing; angle of inclination of this partition relative to vertical is no more than angle of repose of cleaning reagent at each point. Collector for delivery of liquid to be cleaned is made in form of two truncated coned mounted in lower part of housing one above other; they form circular slot for downward flow of cleaning reagent and upward delivery of liquid to be cleaned and circular slot for smooth delivery of liquid to be cleaned. Outer part of flushing unit is made in form of two halves fastened together and detachable over axial plane; these halves embrace inner part of flushing unit.

EFFECT: reduction of overall dimensions (height); smooth flow of liquid; improved quality of flushing the reagent.

2 cl, 4 dwg

Description

The invention relates to filters for cleaning liquids and allows to reduce the height of the filter, to ensure uniform distribution of fluid flow in any cross section of the filter and to improve the washing of the cleaning reagent.

A continuous filter for cleaning liquids is known, including a partially filled reagent housing in the form of a cylindrical shell articulated in the lower part with a hollow cone facing downward, installed in the lower part of the housing, a coaxial distribution cone facing upward and forming a distribution ring gap with a hollow cone, collector for supplying the liquid to be cleaned into the mass of the cleaning reagent, airlift for lifting the contaminated cleaning reagent from the hollow cone to the top of the filter for washing and return to the housing, as well as a device for washing the cleaning reagent, made in the form of an inner part with annular external depressions and protrusions and covering it with the possibility of assembling the outer part with reciprocal annular internal protrusions and depressions, forming a channel for the passage of the cleaning reagent down and the oncoming liquid flow for washing it (patent US 6426005 B1 from 07/30/2002).

However, this filter has the following disadvantages:

- has large dimensions, in particular height;

- the liquid to be cleaned passes in an uneven flow over cross sections by weight of the cleaning reagent;

- when assembling by axial movement of the outer part of the washing device relative to the inner part, large gaps are created and the conditions for good washing of the cleaning reagent are not provided.

The technical result can be achieved in the proposed filter for continuous cleaning of liquid, containing a partially filled housing with a cleaning reagent in the form of a cylindrical shell, articulated in the lower part with a hollow cone facing downward, installed in the lower part of the housing, a coaxial distribution cone facing upward and forming a hollow a cone distribution ring gap, a collector for supplying the liquid to be cleaned into the mass of the cleaning reagent, an air lift for lifting contaminated cleaning reagent in the upper part of the filter for washing and returning to the housing, as well as a device for washing the cleaning reagent, made in the form of an inner part with annular external depressions and protrusions and covering the outer part with reciprocal annular internal protrusions and depressions forming a passage of the cleaning reagent down and a counter flow of liquid to flush it. The filter is equipped with at least one partition wall which is helically screwed in relation to the axis of the housing, the angle of inclination of which at each point with respect to the vertical is no more than the angle of repose of the cleaning reagent, the collector for supplying the liquid to be cleaned is made in the form of two mounted one above the other in the lower part of the cylindrical shell of the casing, truncated cones, the upper of which is facing down with a smaller base and forms an annular gap with the distribution cone for passage down contaminated of the cleaning agent and the cleaning liquid feed upwardly and the bottom - the smaller base facing upwards and forming an annular gap with the outer surface of the upper cone, adapted to uniformly feed the cleaning liquid.

The outer part of the washing device is made of two, bonded to each other, detachable along the axial plane of the halves, covering the inner part of the device so that the cylindrical protrusions of the inner part are included in the mating cylindrical troughs.

Figure 1 shows schematically a filter device;

figure 2 - place I in figure 1;

figure 3 - place II in figure 1;

figure 4 is a view of figure 3.

The filter for continuous cleaning of liquid contains a housing consisting of a cylindrical shell 1 articulated with a hollow cone 2 (see Fig. 1), a distribution cone 3, a collector made of upper 4 and lower 5 cones (see Fig. 2), which serves to the supply of the cleaned liquid from the pipe 6 through the annular gap 7 and forming with the distribution cone 3 distribution ring slit 8, which ensures the flow of the cleaning reagent into the hollow cone 2 and the liquid to be cleaned up through the layer of cleaning reagent. In the housing, above the distribution cone 3, at least one partition wall 9, helical in relation to the axis of the housing, is fixedly installed (see FIG. 1), the angle of inclination of which at each point with respect to the vertical is no more than the angle of repose of the cleaning reagent. Airlift 10 is installed along the body axis for supplying a cleaning agent from the hollow cone 2 to the upper part of the body. The airlift 10 in the upper part is connected to a cleaning agent flushing device, consisting of an inner part 11 with annular external depressions and protrusions and an outer part in the form of two detachable halves 12 and 13 fastened to each other with inner annular protrusions corresponding to the inner part 11 and depressions (see Fig. 3, 4). While the cylindrical protrusions of the inner part 11 are included in the mating cylindrical hollows of the halves 12 and 13 of the outer part.

Works filter continuous cleaning fluid as follows.

The liquid to be cleaned is supplied through the nozzle 6 to the collector, from which through the annular slot 7 it flows uniformly to the annular slot 8 and, partially, to the hollow cone 2. The liquid flow entering through the slot 8 passes through the cleaning reagent layer and accumulates in the upper part of the housing in the form of purified liquid and is supplied to the consumer. The flow of the liquid to be cleaned that enters the hollow cone 2, together with the contaminated cleaning agent, is captured by the airlift 10, and is supplied to the device for washing the cleaning agent in the upper part of the housing. The contaminated cleaning agent in the washing device moves down a zigzag gap between the inner part 11 and the halves 12 and 13 of the outer part. Towards a contaminated cleaning reagent, purified liquid enters. It flushes the contaminated cleaning reagent, which in the form of a pure reagent enters the top of the cleaning reagent layer. The liquid, after passing through the flushing device, is discharged into the sewage system or sumps.

Due to the fact that the cleaning reagent from the hollow cone 2 is gradually taken by the airlift 10 and after passing through the washing device is fed to the top of the washing reagent layer, the latter is constantly moved down. Its lower layers, which are contaminated, are supplied by airlift 10 for washing.

Claims (2)

1. A filter for continuous liquid purification, comprising a housing partially filled with a cleaning reagent in the form of a cylindrical shell articulated in the lower part with a hollow cone facing downward, installed in the lower part of the housing, a coaxial distribution cone facing upward and forming a distribution ring gap with a hollow cone, a collector for supplying the liquid to be cleaned into the mass of the cleaning reagent, an airlift for lifting the contaminated cleaning reagent from the hollow cone to the top of the filter for washing and return to the housing, as well as a device for washing the cleaning reagent, made in the form of an internal part with annular external depressions and protrusions and covering the external part with reciprocal annular internal protrusions and depressions, forming a passage for passage of the cleaning reagent downward and an oncoming liquid flow for washing it, different the fact that it is equipped with at least one partition wall which is helically screwed with respect to the axis of the housing and which is stationary in the housing, the angle of inclination of which at each point with respect to no more than the angle of repose of the cleaning reagent was ticked, the collector for supplying the liquid to be cleaned is made in the form of two truncated cones installed one above the other in the lower part of the cylindrical shell of the shell, the upper of which is facing down with a smaller base and forming an annular gap with the distribution cone for the contaminated passage down the cleaning reagent and the upward supply of the liquid to be cleaned, and the lower one with the smaller base facing upwards and forms an annular gap with the outer surface of the upper cone intended for uniformly supplying liquid to be purified. 2. The filter according to claim 1, characterized in that the outer part of the washing device is made of two, bonded to each other, detachable along the axial plane of the halves, covering the inner part of the device so that the cylindrical protrusions of the inner part are included in the mating cylindrical cavities of the outer parts.

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