SU1632503A1 - Hydrocyclone for sewage cleaning - Google Patents

Abstract

The invention relates to the technique of separation of inhomogeneous liquid media and allows to increase the efficiency of trapping impurities, increasing productivity by ensuring the operation of the filter element in the pressure mode and its continuous regeneration. The hydrocyclone contains a cylindrical body 1, into which a separated liquid is supplied through the tangential nozzle 2, heavy impurities are discharged through the sludge nozzle 3, and the clarified water enters the discharge chamber 7 separated by a perforated parabolic septum (II) 6. Filtering element (E) 11 in the form of an endless grid, mounted rotatably outside P 6 and provided with two control rollers 14 with a drive and two squeezing rollers 13. The filtrate is discharged through a window 10 located in the wall of the filtrate chamber 9 between the branches of the P 6 under the lower edges of the slits for the passage of E 11 1 z p f files, 2 ill. (L with

Description

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The invention relates to the technique of separation of inhomogeneous liquid media, in particular to apparatus for cleaning liquids from impurities of various densities, and can be applied in the agro-industrial, chemical, food, pulp and paper, textile and leather industries.

The purpose of the invention is to increase the efficiency of trapping impurities, increasing productivity by ensuring the operation of the filter element in the pressure mode and its continuous regeneration.

FIG. 1 shows a hydrocyclone, a general view; in fig. 2 shows section A-A in FIG. one.

The hydrocyclone contains a cylindrical body 1, a tangential supply 2, a slurry 3 and a drain 4 branch pipes. The internal cavity of the additional drain cleaning chamber 5 is divided by a perforated parabolic partition 6 into the discharge chamber 7 with a drainage pipe 8 and a filtrate chamber 9 with a window 10 for draining clarified water located under the lower edges of the slits for passing the filter element 11, made in the form of an endless grid installed rotatably outside the perforated partition, and is provided with a scraper device 12 connected with the possibility of changing the angle of attack relative to the outer surface. The squeezing 13 and regulating rollers 14 of the filter element are located respectively inside the drain chamber 7 and outside the filtrate chamber 9, the regulating rollers simultaneously serving to tension and rotate the infinite mesh of the filter element, for which one of the regulating rollers is attached to the rotation drive. The chute 15, for removal of contaminants removed from the surface of the filter element, is installed under the scraper device 12.

Hydrocyclone works as follows

Under the action of centrifugal forces contained in the treated wastewater precipitating impurities, shifting to

the periphery descends along the wall of the hydrocyclone and is discharged through the sludge nozzle 3. Clarified from the settling impurities, containing floating impurities, waste water rto the drain nozzle 4 enters the drain chamber 7 and then filtered through the filtrate chamber 9 is discharged through the window 10 fraction retained by the filter element

11, when the endless grid is rotated, the squeezing rollers 13 are freed of moisture and are removed from the surface of the endless grid by a scraper device 12 into the chute 15, which serves to drain condensed

Claims (2)

1. Hydrocyclone for wastewater treatment containing cylindroconical casing, tangential feed, sludge and drain nozzles, drain and filtrate chamber, separated by an infinite mesh filter element mounted on a supporting frame, a slit mesh pass, squeezing rollers, drive and scraper device, characterized in that, in order to increase the efficiency of trapping impurities, increase productivity by ensuring the operation of the filter element in the pressure mode and its continuous regeneration, the hydrocyclone is equipped with two regulating rollers, the filtrate chamber has a filtrate outlet window, and the supporting frame is made in the form of a perforated parabolic partition, with its top facing the upper edge of the drain pipe and located between the discharge chamber and the filtrate chamber, in this case, the filtrate outlet window is located in the wall of the filtrate chamber between the branches of the partition under the lower edges of the slits for passing the mesh 2. The hydraulic cyclone according to claim 1, characterized in that the squeezing and adjusting rollers are installed respectively inside the drain chamber and outside the filtrate chamber at the slots for the passage of the mesh and one of the regulating rollers is attached to the drive 0 rotation // Fig 2