SU1395376A1 - Centrifuge for dehydration of manure - Google Patents

Abstract

This invention relates to a centrifuge for dewatering manure. The aim of the invention is to increase productivity. The intensification of the filtering process and, consequently, productivity is ensured by the fact that the centrifuge is equipped with an impeller 8 placed in the gap between the side surface of the perforated rotor and the housing 9 and fixed on the hollow shaft 7 mounted coaxially to the shaft 2 of the rotor 1, and the blades of the impeller 8 are repeated The profile of the vertical section of the space in which they are located is located. Tsatrubok 29 drain the liquid phase is made snail-shaped. Equipping the centrifuge with an impeller 8, equipped with an independent drive, allows you to create significant pressure drops before and after the filter element, which increases the filtration rate, and provides forced removal of the filtrate from the centrifuge housing 9, which contributes to improved performance. 2 Il. SS (L

Description

with sd

00

Ci

The invention relates to equipment for dewatering slurry.

The aim of the invention is to increase productivity.

FIG. 1 schematically shows a centrifuge, a general view; in fig. 2 - vibration mechanism.

The centrifuge includes a perforated rotor 1, made in the form of an upwardly truncated cone, rigidly mounted on the shaft 2 of the gearbox-vibrator 3, attached to the base plate 4 mounted on the springs 5 of the frame 6.

On the base plate 4 are rigidly fixed the casing of the gearbox vibrator 3,. which is a rigid base for the shaft 2 of the rotor 1. and the hollow shaft 7 of the impeller 8, and the cylindrical body 9, covering the perforated rotor 1 and the impeller 8. The impeller 8 is rigidly fixed to the hollow shaft 7 and consists of four blades having an uneven trapezium shape and located in the space between the side surface of the rotor and the housing 9 with a gap of 5 ... 6 mm. On the housing 9, covering it, the receiver 10 of the solid fraction is rigidly mounted, equipped with a discharge chute 11 having a lid 12. The bottom of the receiver 10 is angled to the walls of the housing 9.

On the frame 13 on the springs there is an engine 14 for transmitting the rotation to the hollow shaft 7 with the impeller 8 through the flexible gear 15, the pulley 16, the shaft 17 and a pair of gear wheels 18 and 19, as well as for transmitting motion to the gearbox-vibrator 3, which is made the form of unbalances 20 mounted on shafts 17 and 21 mounted in housing 22 with the possibility of axial oscillations communicating to the base plate 4 and the rotor 1.

On the frame 6 of the centrifuge, an engine 23 is mounted for transmitting rotation to the shaft 2 of the rotor 1 through a flexible gear 24, pinch 25, shaft 26 and spring coupling 27.

The centrifuge is equipped with a feeder 28 and a pipe 29 for discharging the liquid phase, which is made snail-like.

The centrifuge works as follows.

From motor 23 through flexible gear 24, pulley 25, shaft 26 and spring clutch 27, rotation is transmitted to shaft 2, on which the perforated rotor 1 is rigidly fixed. From motor 14 through flexible gear 15, pin 16, shaft 17 and a pair of gear wheels 18 and 19 the rotation is transmitted to the hollow shaft 7, on which the impeller 8 is rigidly fixed. The unbalances 20 mounted on the shafts 17 and 21 of the gearbox-vibrator 3 rotate in opposite directions.

0

five

0

five

0

five

0

create disturbing forces in terms of magnitude and direction, which cause axial harmonic oscillations of the reducer-vibrator 3, base plate 4, shafts 7 and 2 with impeller 8 and rotor 1 fixed to them, as well as housing 9 with receiver 10 of solid fraction Liquid manure is fed through the feeder 28 into the perforated rotor I and under the action of centrifugal forces, it is thrown against its walls. The liquid fraction (filtrate) passes through the openings of the filter element of the rotor, is picked up by the blades of the impeller 8 and is thrown out through the pipe 29.

The solid fraction under the action of centrifugal forces and axial oscillations of the rotor 1 moves in the direction of the expanding part of the rotor 1, enters the receiver 10 and, on its bottom, under the action of axial oscillations enters the discharge tray 11 and is brought out.

The greatest effect of separation of slurry into fractions is observed when the angle of inclination of the walls of the rotor 1 to its axis is equal to 35 °.

Constructive execution of a vibrating centrifuge with an impeller in the space between the rotor and the housing contributes to increasing the throughput of the rotor filter element by 15 ... 20% by increasing the pressure difference between the filter element and after it, because when the impeller rotates in the space between the rotor and the housing, a vacuum of about 25 ... 30 kCa.

In addition, when the impeller rotates, its blades capture the filtered liquid and throw it into the drain pipe 29, accelerating its removal from the centrifuge, which also contributes to an increase in centrifuge productivity.

Claims (1)

Invention Formula A manure dewatering centrifuge, comprising a housing, a cone-shaped perforated rotor located therein, a rotary rotation drive, a driven vibrator, and a liquid phase discharge pipe, characterized in that it is equipped with an impeller placed in the gap between the hull and the side the surface of the rotor and mounted on a shaft mounted coaxially to the rotor shaft, the impeller being connected to the vibrator drive, and the nozzle of the liquid phase is made of cochlea. I 21 22 / /  / / h 7/7-p1 19 L-, 1 / at (fJuaZ t L /