SU1754153A1 - Thickener - Google Patents

Abstract

The invention relates to filtration and can be used in the purification of natural waters from seston when drawing water from surface sources. The goal is to increase work efficiency when thickening sticky materials. The thickener includes inclined filter sieves, which are connected in series with each other by hinge rods and are installed with the possibility of oscillatory movements. 1 il.

Description

. The invention relates to the field of filtration and can be used in the treatment of natural waters for the separation of seston, when drawing water from surface sources.

The goal is to increase the efficiency in working with thickening of sticky materials.

The drawing shows a thickener, cut.

The thickener includes a cascade of filter sieves 1 arranged in series and obliquely, the upper part of each successive sieve is under the lower part of the previous one. The magnitude of the tilt angles of the screens in a stationary state increases in the direction of movement of the dehydrated seston. The upper sieve, through which water is filtered intensively, is located at an angle of 30 °, the middle screen is at an angle of 35 ° and the bottom screen is at an angle of 45 °. Sieve 1 with dimensions of 1.5 x 2 m is mounted on a metal frame made of 3 x 3 mesh nets mm and made of

filter material, such as mill gas with a pore size of 64 microns. Sieve 1 is equipped with sides on the sides, so that the flow of water and the condensed seston is directed to a lower sieve.

The sieve 1 is interconnected by hinge rods 2. To perform oscillatory movements, the sieves are equipped with a drive 3 with a central shaft 4 located in the lower part of the middle sieve 1.

Each filter sieve 1 is mounted on its hinge supports 5, attached to frame 6, inside of which a tray 7 is placed for collecting and draining water. Under the thickener is placed a tank of 8 decanted water and a tank of 9 thick sediment. The condensing sludge tank 9 is equipped with exhaust ventilation 10.

The actuator 3 includes a butterfly actuator 11 connected to the central shaft 4 of the middle sieve and providing oscillatory movements of the sieves. Above the upper sieve is the distribution (L

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Litel collector 12 for supplying treated water.

The thickener works as follows.

Water containing sticky material, such as seston, flows through the distribution manifold 12 to the upper sieve, where due to the filtration and oscillating movements of the sieve, a partial separation of water and condensed sediment occurs. Simultaneously with the water supply to the upper sieve of the drive 3, an actuator 11 is switched on, which ensures that the oscillatory movements are performed by the sieves 1. Descending sequentially from the upper sieve 1 to the middle and lower sieve, the water is purified from the seston. Purified water from the bottom sieve enters tank 8, and condensed sediment (seston) into tank 9.

Condensed seston obtained using the proposed device can be used as a soil fertilizer for agricultural crops,. 12

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as a raw material for the production of feed concentrates, as well as in the cosmetic and chemical industries.

The use of the device makes it possible to increase the efficiency of work with the thickening of sticky materials due to the fact that the continuous oscillation movements by the screens prevents the pores of the grids from clogging with mucous substances and ensures continuous operation in the automatic mode without retooling the initial angles of the filtering screens.

Claims (1)

Claims of the Invention . ten Jh