SU403444A1 - CENTRIFUGE - Google Patents

Description

one

The invention relates to continuous-action filter centrifuges with a COLORFILL rotor and can be used in the same industries that use conventional filter centrifuges.

A centrifuge is known, comprising a rotor in the form of disks mounted on a vertical shaft and filtering blades installed between the latter.

The proposed centrifuge improves separation efficiency.

This is achieved by the fact that, at the end of each blade in the discharge zone of the sediment, there are rollers, the axis of rotation of which is parallel to the shaft of the disks.

FIG. 1 shows the proposed centrifuge, vertical section; in fig. 2 is a drive for rotating the rollers with energy extraction from the centrifuge rotor shaft; in fig. 3 is a section along A-A in FIG. one; FIG. 4 is a mechanism for braking the rollers rotating under the action of the papor of the moving mass of the product.

The proposed circuitry includes a rotor in the form of disks 2 and 3 mounted on a vertical shaft 1 and filtering blades 4 mounted between the latter.

At the end of each blade 4, rollers 5 are installed in the sediment discharge zone, the axis of rotation

which are parallel to the shaft of the discs 2 and 3, as well as the nozzle b, which serves to drain the liquid phase to the receiver 7. To remove the liquid phase from the receiving tank, there is a tangential

The tube 8 is located. An accelerator bowl 9 is provided for feeding the fugum product to the blade 4.

The rotation of the rollers 5 can be carried out at a certain speed (option I), either approximately with energy extraction for rotation of the rollers 5 from an autonomous electric motor or the centrifuge rotor shaft 1 (option 11), or using the kinetic energy of a layer moving the blade 4 products (option P1).

In option 1 (see Fig. 1), the rotational drive of the rollers 5 consists of an electric motor 10 with an adjustable rotational speed; a pulley 11 mounted on the shaft of an electric motor 10, a pin 12 rotating with respect to the rotor shaft 1; REMP 13, providing energy transfer from pin 11 to pulley 12; a central gear (friction) wheel 14, rotating freely on the rotor shaft 1, connected with a pulley 12; gear (friction) wheels 15 mounted on the ends of the rollers 5 and in kinematic communication with the central wheel 14. According to variant P (see Fig. 2) the drive consists

from the pulley 16, fixed on the shaft I of the rotor;

pulleys 17 and 18 interconnected and rotating on an axis 19 fixed relative to the centrifuge housing 20; belts 21 and 22, transmitting motion respectively from pulley 16 to pulley 17 and from pin 18 to gear (pulley) gear pulley 12 consisting of wheels 14 and 15. Friction gear 14-15 for unloading the lower roller bearings 5 from centrifugal force can be performed with intra gearing.

According to variant III (see Fig. 4), the rotation of the rollers 5 is carried out by a layer of moving product, which, relative to the axis of rotation of the rollers 5, creates a torque proportional to the pressure of the product layer and the shoulder "L. Regulation (deceleration) of the speed of rotation of the rollers 5 in this case is carried out by immersing the ropes 23 (see Fig. 4) fixed to the ends of the rollers 5 in a liquid poured into the annular cavity of the disk 24 fixed to the centrifuge rotor shaft 1.

Works centrifuge as follows.

When the feed mixture is fed into the accelerating bowl 9 (see Fig. 1), the mixture falls on the blades 4, spreads over them in a thin layer

and the node, by the action of the tangential component of the centrifugal force, moves along the blade 4. The profile of the blade is calculated so as to ensure stable removal of the product from it. The liquid phase is withdrawn from the blades through the nozzles 6 into the receiver 7, and from the receiver through the hexagon tube 8. The product layer, moving along the blade 4 (see Fig. 3), abuts the rollers 5. Due to the forces of the roller 5, the layer the product begins to move along the blade 4 at a speed equal to the circumferential speed of the rotating roller 5. For better adhesion to the sediment, the surface of the rollers can be

made corrugated.

Subject invention

A centrifuge comprising a rotor in the form of discs mounted on a vertical shaft and filtering blades installed between the latter, characterized in that, in order to increase the separation efficiency, rollers are installed in the discharge zone of the precipitate at the end of each blade, the axis of rotation parallel to the disk shaft.

J 6

fuaJ

 0

L

Rotation of the rotor