SU398281A1 - FILTERING CENTER - Google Patents

Description

one

The invention relates to filtration centrifuges and is intended to filter heavy, viscous slurries that form a dense incompressible precipitate, such as molten tin, lead, silumin, and others.

A known filtering centrifuge for separating a suspension, for example a molten tin, comprising a cylindrical rotor with a piston mounted inside it with the possibility of reciprocating movement made in the form of discs mounted on a stem.

In order to increase filtration efficiency and increase productivity in the proposed centrifuge, the walls of the cylindrical rotor are made solid, and the piston disks are located in it with the formation of an annular gap between their outer edge and the inner surface of the rotor.

To separate the molten tin, the gap between the outer edge of the disks and the inner surface of the rotor is set in the range of 0.2-0.5 mm.

FIG. 1 shows the proposed centrifuge at the time of filtering the suspension through the upper gap, a vertical section; in fig. 2 - the same at the moment of filtering the suspension through the lower gap; in fig. 3 - the same at the time of release of sediment.

The filtering centrifuge for separating the suspension, for example a molten tin, contains a cylindrical rotor 1 with a piston mounted inside it with the possibility of reciprocating movement of a piston made in the form of discs 3 and 4 4 mounted on a rod 2.

The walls of the cylindrical rotor are made solid, and the disks 3 and 4 of the pistons are located in it with the formation of an annular gap 5 between their outer edge and the inner surface of the rotor /, which ensures the removal of the centrifuge in the process of separation of the suspension.

In order to separate the molten tin, the gap 5 between the outer edge of the disks 3 and 4 and the inner surface of the rotor 1 is set in the range of 0.2-0.5 L1 m.

The internal cavity 6 is preassigned for suspension.

The centrifuge works in the following way, nm way. The suspension is fed into the internal cavity 6 (Fig. 1) of the piston and, under the action of centrifugal forces, is filtered through the gap 5. At the same time, the piston oscillates along the walls of the cylindrical rotor 1 by an amount / g.

When the piston moves down (Fig. 2), filtering occurs through the gap 5 formed by the lower piston disk 3, and when moving upward, the upper disk 4.

Thus, during operation of the centrifuge, the filter gaps are periodically released from the settled sediment, as a result of which the productivity of the centrifuge is maintained at the same level. The precipitate is constantly collected in the middle part of the rotor and, after accumulating a certain amount, is ejected from the filter by piston movement by the value of I (Fig. 3).

Subject invention

Claims (2)

1. Filter centrifuge to separate the slurry, e.g. tin comprising a cylindrical rotor with the piston mounted inside it with the possibility of reciprocating movement, made in the form of fortified disks on niTOKe, characterized in that, in order to filter and increase the efficiency of the cylindrical rotor, the walls of the cylindrical rotor are solid, the formation of an annular gap between their outer edge and the inner surface of the rotor. 2. A centrifuge according to claim 1, characterized in that for separating; 1 the melt of the crude tin the gap between the outer edge of the discs and the inner surface of the rotor is set in the range of 0.2-0.5 mm. five 4z V g / / / / A Sediment   : fOcaSoK Fig.Z