SU1542578A1 - Filter/thickener - Google Patents

Abstract

The invention relates to the design of continuously operating filters for separating slurries into filtrate and thickened sediment and can be applied in industrial wastewater treatment. The purpose of the invention is to increase productivity. The filter thickener contains a stationary horizontal cylindrical body with two perforated walls covered with filter cloth. In the housing, the roll 3 is eccentrically located with a longitudinal slit 7 and double walls: an external filter 5 and an internal continuous 6, forming a cavity for collecting the filtrate. The suspension is supplied through the hollow shaft 9, the holes 10 therein and the longitudinal slit 7. The filtrate passes through the perforated walls 2 and 5, and the sediment accumulated on them is removed, respectively, by the blade 11 and the edge of the nozzle 8. The filtrate is collected in the container 1 and in the collection cavity the filtrate is discharged through the apertures. 2 Il.

Description

1 Fig 1

The invention relates to the design of continuously operating filters for separating slurries into filtrate and thickened sediment and can be applied in industrial wastewater treatment.

The purpose of the invention is to increase productivity.

FIG. 1 shows the scheme of the proposed device; in fig. 2 shows section A-A in FIG. one.

The filter thickener consists of a tank 1 in which a stationary horizontal cylindrical body 2 is located with perforated walls covered with filtered permeable walls of the body 2 is collected in the tank 1, through the walls of the roll 3 into the cavity to collect the filtrate, and from there through the holes 16.

The thickened sediment gradually accumulates on the walls of the housing 2 and the wall 5 and is periodically removed from them, respectively, by the blade 11 and the edge of the nozzle 8.

Due to the eccentric arrangement of the casing 2 and the roll 3, the blade 11 drives the condensed sludge removed from the filter wall of the casing through a narrowing channel, due to which additional compression and dehydration occur

draft. The tightness of the case provides a shedding fabric. In the housing 2, the eccentricity is sealed by seals 14 and 15. Swivel 3 is placed. The roller bearing 12 slowly rotates the bearings 4. The roller has double walls: an external filter 5 and an internal continuous 6, forming a reservoir for collecting the filtrate. Roll 3 has a longitudinal slot 7.

In the place of the closest approach of the roll 3 and the body 2 to the latter tangentially

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a gift to the drive connected to the shaft 9. At the same time, it pushes the roller 3 and it also rotates in the bearings 4.

Due to a more efficient removal of sediment and additional compression, it is peredrymaet pipe 8 to output a thickened sediment. In the housing 2 along its axis there passes a hollow shaft 9 with openings 10, on 25 of which the blade 11 is rigidly fixed. The shaft 9 is installed in bearings 12 and connected on one side to an installation drive (not shown), and on the other to a feed pump 13 suspensions.

The removal rate of the thickener filter is improved.

Claims (1)

Invention Formula A thickener filter comprising a stationary cylindrical body inside which a hollow rotating shaft is arranged coaxially with sludge removal devices, filter elements, a slurry feed pump 30, a sludge outlet pipe and a filtrate collecting tank, characterized in that performance, it is equipped with an eccentric mounted roller with a longitudinal slit, made with double walls, the external filter-thickener, including a stationary cylindrical body, inside which is coaxial a hollow rotating shaft is arranged with devices for removing sediment, filtering elements, a pump for supplying slurry 30, a pipe for removing sediment and a reservoir for collecting filtrate, characterized in that, in order to increase productivity, it is equipped with an eccentrically mounted roller with a longitudinal slit made Double-walled, the outer filter thickener has two seals 14, 15 between body 2 and roller 3, between roller 3 and shaft 9. The filtrate from roller 3 is withdrawn into container 1 through openings 16. The filter thickener works as follows: 35 n of which is made filtering. A device for removing sediment by means of a pump 13 slurry is fed to the root as a blade attached to the belt 2 through a hollow shaft 9, holes 10 in it are perforated shaft scrap, which is installed and the longitudinal slit 7. Under the action of pressured inside the roll and connected to the laziness pump of the pump 13, the filtrate passes through the suspension feed. the permeable walls of the casing 2 are collected in the tank 1, through the walls of the roll 3 into the cavity for collecting the filtrate, and from there through the holes 16. The thickened sediment gradually accumulates on the walls of the housing 2 and the wall 5 and is periodically removed from them, respectively, by the blade 11 and the edge of the nozzle 8. Due to the eccentric arrangement of the housing 2 and the roll 3, the blade 11 drives the thickened sediment removed from the filter wall of the housing through a tapering channel, due to which additional compression and dewatering occur seals 14 and 15. The blade 11 rotates slowly due to a gift to the drive connected to the shaft 9. At the same time, it pushes the roller 3 and it also rotates in the bearings 4. Due to more efficient removal of sediment and additional compression of it before removal, the capacity of the filter-thickener is increased. Invention Formula A filter thickener comprising a stationary cylindrical body within which a hollow rotating shaft is arranged coaxially with sludge removal devices, filtering elements, a slurry pump, a pipe for withdrawing sludge and a filtrate collecting tank, characterized in that it is equipped with an eccentric roller with a longitudinal slit made with double walls, of which the filter is made externally, and a device for removing sediment is made if no I / vj53