RU96033U1 - CENTRIFUGA FOR SEPARATION OF SOYBEAR BREAST ON THE SOYBEAN BASIS AND CARBAR - Google Patents

Abstract

 A centrifuge for separating a suspension, consisting of a centrifuge body, a rotor with a filter element, a suspension supply pipe and a nozzle with holes directed towards the rotor, through which air or steam is supplied under pressure in the opposite direction to the movement of the soy base, characterized in that two diametrically spaced nozzles with holes are installed parallel to the side of the rotor side of the rotor side.

Description

The present invention relates to equipment for the separation of liquid heterogeneous systems using centrifugal forces, namely, centrifuges for separating suspensions.

Refers to the food industry and can be used in the production of soy base.

A vertical continuous centrifuge is known (AC 225784 from 08.29.1968), including a casing, a conical drum having annular partitions on the outside. Two zones are formed between the partitions with the formation of chambers.

In order to increase the separation efficiency and improve the quality of the solid fraction, the zones are equipped with radial blades. Due to the pressure drop created, the magnitude of the friction force is changed, and thus the thickness of the suspension layer and its residence time in the centrifuge are controlled.

The disadvantage of this centrifuge is the insufficient pressure drop created by the radial blades. The crushed soybean product has a high viscosity, and a significant pressure drop is required to clean the drum net.

A vibration-centrifugal centrifuge with torsional vibrations (AC 1396378 dated 01/15/1988) consists of a perforated rotor that rotates and at the same time oscillates along the axis of rotation. A vane impeller is installed on the outside of the rotor to create a pressure differential between the inside and outside of the rotor. This improves the process of isolating the liquid fraction.

The disadvantages of this design are the insufficient vacuum created by the impeller blades, as a result of which the moisture release effect is reduced.

Also known is a centrifuge for cleaning soybean food suspension of the brand ЦСО-2000 (Passport ЦСО 00.000 ПС CJSC Sigma, Krasnodar, 1999), consisting of a centrifuge housing, a perforated rotor with a filter element, a steam manifold and a suspension feed pipe. In the case there is a window for unloading okara, a pocket with a pipe for exiting peeled soy base.

However, when using this centrifuge, it is not possible to obtain an okara of the desired humidity, since during its operation the filter element is clogged with solid (undissolved) particles.

Closest to the claimed one is a centrifuge for separating soy broth into a soy base and okara (patent 2287374 from 11/20/2006), consisting of a centrifuge housing, a perforated rotor with a filter element, a pipe for supplying steam (air) and a pipe for supplying a suspension. In the case there is a window for unloading okara, a pocket with a pipe for exiting peeled soy base. For maintenance of the centrifuge, there is a lid in the casing, which is fastened with clamps during operation. The principle of operation is based on the filtration of the suspension through the filter element under the action of centrifugal forces arising from the rotation of the conical rotor. To clean the rotor, nozzles are installed along which air or steam is supplied under pressure in the opposite direction to the movement of the soy base.

However, when using this type of purge, it is not possible to achieve the necessary efficiency of cleaning the rotor from stuck particles, which leads to frequent dismantling of the filter element. In addition, there are bending moments acting on the rotor shaft and forces acting on the shaft bearings, as a result of which they prematurely fail.

The aim of the invention is to increase the cleaning efficiency of the rotor and reduce bending moments.

This goal is achieved by the fact that on the outer side of the rotor parallel to its conical generatrix there are two diametrically located nozzles with holes.

The proposed continuous centrifuge consists of a housing 1, a welded frame 2, a drive shaft 3, an electric motor 4, two pulleys 5 and 6, a V-belt transmission 7. The rotating parts of the centrifuge are closed by a casing 8. In the centrifuge housing there are installed: pipes 9 for supplying steam (air) , perforated rotor 10 with filter element 11, pipe for removal of soy base II. For maintenance of the centrifuge, the housing has a lid 12, which is secured by clamps 13 during operation. A tube 14 for supplying a suspension passes through the lid, and a window 15 is provided in the lower part of the lid for unloading the okara.

The rotor is a shell of the shape of a truncated cone mounted on the hub 16. On the inner surface of the rotor there is a filter element 11, which is fastened to the rotor by a flange 17, and on the other hand pressed against the hub 16. A cup 18 is rigidly fixed on the rotor hub, for uniform distribution of the suspension flow along the generatrix of the rotor. Attached to the steam (air) supply pipes 9 are nozzles 19 for cleaning the rotor of solid (undissolved) particles of ground mass.

Improving the cleaning efficiency of the rotor and reducing bending moments is achieved by the fact that two diametrically located nozzles with holes are installed on the outer side of the rotor parallel to its conical generatrix.

The principle of operation of the centrifuge is based on the filtration of soybean suspension through a filter element under the action of centrifugal forces arising from the rotation of the rotor. In this case, the soybean suspension is fed into the nozzle I (soybean suspension supply pipe) and enters the rotor, where, under the action of centrifugal forces, the soybean base is separated from the okara on the filter material.

The peeled soy base flows down the walls of the casing and flows out of the centrifuge through nozzle II, and the okara, moving along the rotor surface along the generatrix of the cone, enters the okara discharge window.

To obtain a high-quality soy base, a filter element is used: a grid with openings in the light 0.15 0.15 mm. So that the holes during operation are not quickly clogged by solid (undissolved) particles of ground mass and the filtration quality does not deteriorate on the outside of the rotor, parallel to the rotor case, two diametrically located nozzles with holes directed towards the rotor are installed. During operation of the centrifuge, steam or air is supplied through the pipes 9 under pressure against the movement of the soy base through the filter mesh, thereby stuck solid particles of Okara are blown from the surface of the filter element, and bending moments acting on the rotor shaft are reduced due to the diametrical arrangement of the nozzles and forces acting on the shaft supports.

In addition, in the case when steam is supplied to the nozzles, at the same time as cleaning the filter element, the soy base is deodorized.

Claims (1)

A centrifuge for separating a suspension, consisting of a centrifuge body, a rotor with a filter element, a suspension supply pipe and a nozzle with holes directed towards the rotor, through which air or steam is supplied under pressure in the opposite direction to the movement of the soy base, characterized in that two diametrically spaced nozzles with holes are mounted parallel to the side of the rotor side of the rotor side.