SU1622015A1 - Centrifuge - Google Patents

Abstract

The invention is intended for the separation of suspensions in the field of action of centrifugal forces and can be used in the chemical, mining, metallurgy 25 11 12 I 2 and other industries. The purpose of the invention is to improve the quality of sludge by reducing its humidity. The centrifuge includes a housing 1, a rotor 3, an auger 4. Between the turns of the screw 4 there are placed means for pressing the sediment in the form of a ball 12 and limiting their movement in the form of a plate. A rotating plate can be used as a means of pressing the sediment, and as a limiter for moving the balls holes in the drum auger. Combined means of sludge extraction from the rotary plate and the body of rotation fixed on its periphery are also possible. As a result of the use of the invention, a decrease in the moisture content of the precipitate is achieved due to the additional extraction of the liquid from it by the means listed above. 2 h. the item of f-ly, 7 ill. 45 S 2

Description

This invention relates to a slurry separation technique in a centrifugal cvyi field and can be used in the chemical, mining, metallurgical and other industries.

The aim of the invention is to improve the quality of the precipitate produced by reducing the humidity.

FIG. Figure 1 shows a centrifuge with means for pressing the precipitate, made in the form of balls, and limiting their movement in the form of a flat partition, a longitudinal section; in FIG. 2 a node in FIG. one; in fig. 3 - means for pressing sediment, made in the rotating plate eide; in fig. 4 shows section A-A in FIG. 3; Fig. 5 shows a means for pressing the sediment, made in the form of a ball with a movement limiter in the form of a hole in the auger drum; cha figs. 6 is a section bb of FIG. 5; in fig. 7 - combined means of pressing sediment.

The centrifuge includes a housing 1 mounted inside it on bearings 2, a rotor 3 and a screw 4 mounted inside a rotor 3 on bearings 5. The housing 1 has pockets b and 7 for receiving, respectively, clarified moisture and sludge /

The rotor 3 has a device for supplying a suspension, made in the form of an aperture 8, through which the feed pipe 9 passes, and devices for draining the clarified liquid and sediment, also made in the form of apertures, respectively 10 and 11. Between the turns of the screw 4 there are placed means for squeezing in the form of a body of rotation: a ball 12 (Fig. 1, 2, 5, and 6) or a swivel plate 13 (Fig. 3 and 4). Depending on the type of spinning means, various restraints of their movement are used; in the form of a partition 14 (Fig. 1 and 2) or holes 15 (Fig. 5 and 6} for the pressing means in the form of a ball and in the form of an axis 16 (Fig. 3 and 4) for the pressing means in the form of a rotary plate. It is possible to use the combined means pressing the sediment in the form of a rotary plate with a cylindrical roller 17 mounted on its periphery (Fig. 7).

The centrifuge works as follows.

The rotor 3 and the screw 4 are rotated. The suspension through pipe 9 enters the inside of the rotating rotor 3. Under the action of centrifugal forces, the suspension is divided into solid and liquid phases. The solid phase is deposited on the inner wall of the rotor, and the clarified liquid is drained from the rotors of the holes 10 into the pocket 6 of the housing 1. The sediment (solid) by the screw 4 is transported to the holes 11 and drains through them into the pocket 7 of the housing 1. From the pockets 6 and 7 the clarified liquid and sediment are removed from the centrifuge.

When the centrifuge is operating on rotating with one frequency with a screw 4, a means for pressing sediment 12 or 13, or 17, a centrifugal force acts, under the action of which ORI force the precipitate along the movement along the spiral of the screw. However, the restraints 14 or 16, or 15 prevent the displacement of the means for pressing the sediment along the screw helix.

5 for sludge extraction contact in series with the entire mass of sediment transported in the rotor. At the same time, at the point of contact of the precipitate with the pressing means, compression and destruction of the skeleton occurs.

0 sediment, due to which liquid is squeezed out of it, which under the action of centrifugal force is discharged along the spiral of the screw to a larger radius of the rotor. After passing the spin agent

5 sediment due to elastic forces, there is some expansion of the sediment roller, as a result of which the liquid from the lower layers under the action of capillary forces rises to the upper layers, which contributes to its better

0 spin the following spin tool.

As a result of using the invention, the moisture content of the precipitate released is reduced to 10%, which significantly improves its quality.

five

Claims (3)

1. A centrifuge containing a conical rotor with devices for supplying slurry and discharging the clarified liquid and sludge installed inside the rotor auger, consisting of a drum and a spiral wound on it, and means for squeezing the sediment placed between the turns of the screw, characterized in that which, in order to improve 5 of the quality of the sludge being released by reducing its humidity, the means for pressing the sludge have the ability to move relative to the auger, while the auger is provided with restrictions on the movement of means 0 for pressing sediment. 2. A centrifuge according to claim 1, characterized in that each means for pressing the sediment has the shape of a body of rotation, and its movement restriction is made in the form 5 partitions, fixed between adjacent turns of the auger spiral or in the form of a hole in the auger drum. 3. A centrifuge according to claim 1, characterized in that each means for pressing the sediment is made in the form of a rotary plate. mounted on an axis that serves as an ogranic between adjacent turns of the spiral by the retainer of its movement and a fixed screw parallel to its axis of intersection. -AND Editor G. Gerber Compiled by I.V Zemsky Tehred M.Msrgentalcorrector L.Pilipenko to Theb.7