SU1277995A2 - Filter - Google Patents

Abstract

The invention relates to devices used in the treatment of natural and waste waters, and makes it possible to increase the efficiency of the filter when cleaning multiphase media by increasing its dirt-holding capacity. The filter consists of a housing 1 installed inside it a frame in the form of a squirrel cage 6 formed by two flanges with knitting needles fixed between them, to which are attached flexible filter plates 7-9, combined into groups. Each of the groups consists of two plates of different length and porosity, fixed to the frame in the order of increasing length and porosity in the direction of rotation of the filtering medium. For the formation of the active part of the filtering medium, a crimping device is used, consisting of pushers 11 and 12 and crimping elements 13, mounted (Linear with radial movement. 4 Fig. 8 Fig. 2 7

Description

The invention relates to the field of filtration, can be used in the chemical and other sectors of the industry for purification of natural and waste waters containing petroleum products and mechanical impurities and is an improvement of the invention according to the author. St. No. 1194458.

The aim of the invention is to increase the efficiency of the filter when cleaning multiphase media by increasing its drain capacity.

Fig. 1 shows the filter in the operating state; the general sectional view of Fig. 2 - the same, in the mode of regeneration; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - section BB in fi 3.

The filter consists of a housing 1 with an inlet nozzle 2, an outlet nozzle 3, a discharge opening 4 and a nozzle 5 for removal of contaminants. The inside of the housing 1 is installed in a frame in the form of a squirrel cage 6 formed by two flanges with spokes fixed between them. Flexible filter plates 7–9 are attached to the spokes, combined ile, 1e into a group, and made of materials with a correspondingly decreasing length and decreasing porosity. To form the active part, the filtering medium 10 serves as a crimping device consisting of pushers 11 and 12, as well as perforated elements 13, installed with the possibility of radial movement. One flange of the squirrel cage 6 is connected with the outlet nozzle 3, the other with the two-speed electric motor 14

The filter works as follows.

Using a two-speed electric motor 14, the squirrel cage 6 is rotated with a minimum frequency. At the same time, the pushers 11 and 12 are moved in the direction of the axis of rotation of the squirrel cage 6 and, at the end, the crimping elements 13 around the spiral squirrel cage 6 of the filter plates 7-9 form the filter medium 10. At the same time, the plate 7, having the greatest length, is superimposed on the plate 8, overlaps it. Plate 8, in turn, superimposed on plate 9, covers the latter. The filter element thus obtained has a three-layer structure with porosity.

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it is in the direction of movement of the medium to be filtered.

Filtered medium, such as emulsion oil, is fed through inlet 2 into the body 1, in which it is pre-gravitationally separated. Coarse particles of oil products, density less than water density, float upward and, as they accumulate, are discharged from the body 1 through pipe 5 and contaminants with a higher density precipitate and then are removed through discharge port 4.

Non-gravitational settling of the fine-dispersed part of the emulsion enters the outer part of the filtering medium 1 O formed by the filter plates 7, which have a greater length and porosity, and designed to trap large particles of mechanical impurities. The medium 10, which is based on filter plates 8 having intermediate porosity, captures the fine phase of mechanical impurities and, along with the internal part, the porosity of which is mainly determined by the packing density ol "; of the filtering material of the filter plates 9, coalescence of oil dispersed in water. The separated oil product together with the filtrate is discharged from the cavity of the squirrel cage 6 through the pipe 3. The final separation of the oil product from the filtrate is carried out by settling.

In order to regenerate the active part of the filter medium 10, the crimping elements 13 are retracted to the walls of the housing 1, thereby freeing the filter plates 7-9. At the same time, through the discharge opening 4, the cavity of housing 1 is dried. Then, using a two-speed electric motor 14, squirrel cage 6 is rotated at a frequency sufficient to break off deposits that stick to the filter plate 1e 7-9. The particles of the soil under the action of a centrifugal field are torn from the ends of the filter plates 7-9 on the walls of the housing 1, accumulate in its lower part and are removed through the loading opening 4.

If necessary, in the cavity of the squirrel cage 6 through the pipe 3 gives 3

with a regenerable agent completing the washing of the filter plates 7-9.

After that, the frequency of rotation of the squirrel cage 6 is reduced and, at the same time, the crimping elements 13 around the cleaned filter plates 7–9 form the filter medium 10,

Claims (1)

The invention relates to the field of filtration, can be used in the chemical and other sectors of the industry in the purification of natural and waste waters containing petroleum products and mechanical impurities and is an improvement in the invention of the shadow according to the author. St. No. 1194458. The purpose of the invention is to increase the efficiency of the filter when cleaning multiphase media by increasing its dirt-holding capacity. Fig. 1 shows the filter in the operating state, a general view in section in Fig. 2 - the same, in the mode of regeneration; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - section BB in fi. 3. The filter consists of a housing 1 with an inlet nozzle 2, an outlet nozzle 3, a discharge port 4 and a nozzle 5 for diverting contaminants. The inside of the housing 1 is installed in a frame in the form of a squirrel cage 6, formed by two flanges with spokes fixed between them. Flexible filter plates 7–9 are attached to the spokes, combined ile, 1e into a group, and made of materials with a correspondingly decreasing length and decreasing porosity. To form the active part, the filtering medium 10 is a crimping device consisting of pushers 11 and 12, as well as perforated elements 13, installed with the possibility of radial movement. One flange of the squirrel cage 6 is coupled with the outlet nozzle 3, the other with the two-speed electric motor 14. The filter works as follows. Using a two-speed electric motor 14, the squirrel cage 6 is rotated with a minimum frequency. At the same time, the pushers 11 and 12 are moved in the direction of the axis of rotation of the squirrel cage 6 and, at the end of the crimping elements 13, around the spiral 6 squirrel cage 6 of the filter plates 7-9, the filter medium 10 is formed. At the same time, the plate 7, having the greatest length, is superimposed on plate 8 overlaps it. Plate 8, in turn, superimposed on plate 9, covers the latter. The filter element thus obtained has a three-layer structure with porosity. it is in the direction of movement of the medium to be filtered. Filtered medium, such as an oil tank on an emulsion, through the inlet 2 is fed into the housing 1, in which it is pre-gravitational separation, coarse particles of oil products, density less than water density, float up and, as they accumulate, are discharged from the housing 1 through the nozzle 5 , and contaminants with a higher density precipitate and then are removed through the discharge opening 4. The finely dispersed part of the emulsion, which is not susceptible to gravitational settling, falls into the external part of the filtering medium 1 O formed by the filter plates 7, having a greater length and porosity, and intended to trap coarse particles of mechanical impurities. Among the 1 part of the medium 10, which is based on filter plates 8, having an intermediate porosity, captures the fine phase of mechanical impurities and, along with the inner part, the porosity of which is mainly determined by the packing density ol "; of the filter material of the filter plates 9, coalescence of oil dispersed in water. The separated oil product together with the filtrate is discharged from the cavity of the squirrel cage 6 through the pipe 3. The final separation of the oil product from the filtrate is carried out by settling. In order to regenerate the active part of the filter medium 10, the crimping elements 13 are retracted to the walls of the housing 1, thereby freeing the filter plates 7-9. At the same time, through the discharge opening 4, the cavity of housing 1 is dried. Then, using a two-speed electric motor 14, squirrel cage 6 is rotated at a frequency sufficient to break off deposits that stick to the filter plate 1e 7-9. The particles of contamination under the action of the centrifugal floor break down from the ends of the filter plates 7–9 onto the walls of the housing 1, accumulate in its lower part and are removed through the loading hole 4. If necessary, the squirrel cage 6 enters the cavity 3 through the outlet 3 with the regenerable agent completing the washing filter plates 7 - 9. After that, the frequency of rotation of the squirrel cage 6 is reduced and, at the end, the crimping elements 13 around the cleaned filter plates 7-9 form the filter medium 10, Invention Formula according to the author. St. No. 1194458, distinguished by the fact that. 5 in order to increase the efficiency of cleaning multiphase media by increasing its soil capacity, the filter plates are grouped into groups, each of which consists of at least two plates of different length and porosity, and are fixed on the frame in order of increasing length and porosity the direction of rotation of the filter medium. 3 3 FIG. eight,