RU71568U1 - CENTRIFUGAL CLASSIFIER - Google Patents

Abstract

The centrifugal classifier is intended for the classification of bulk materials in the chemical, metallurgical and other industries. A centrifugal classifier comprising a housing, a drive shaft installed in it with a disk with blades mounted on it, a reflector, a supply pipe, devices for outputting separated fractions, blades and a reflector have a curved shape, with a lid attached to the upper part of the blades, and devices for outputting separated fractions are a series of coaxial conical cameras.

Description

The present invention is intended for the classification of bulk materials in the chemical, metallurgical and other industries.

A classifier is known comprising a housing, on the cover of which a cylindrical chipper, an air distributor, a disk with horizontally adjustable horizontal blades mounted on it are installed. Depending on the required particle size, the blades can turn both clockwise and counterclockwise [RF Patent No. 93002982, BI No. 20, 1995, IPC V07V 7/083].

The disadvantages of this classifier include the complexity of the design and low separation efficiency.

Closest to the proposed invention is a centrifugal classifier includes a housing, a shaft installed in it with a disk mounted on it with blades in the upper part and a conical reflector in the lower one, a distributor in the form of a truncated cone with a supply pipe mounted in its upper small base, devices for supplying and air exhaust and output of the separated fractions. It is equipped with an adjustment paddle guide located at the bottom of the supply pipe. The blade vanes are installed with an inclination in a horizontal plane to the radius of the disk in the direction of rotation of the disk or against [RF Patent No. 2104100, BI No. 27, 1998, IPC V07V 7/083].

The disadvantages of this classifier include the design complexity, large size and low separation efficiency.

The objective of the invention is to provide a centrifugal classifier having a simple structure and high performance.

The problem is achieved in that in a centrifugal classifier containing a housing, a drive shaft with

a disk with blades mounted on it, a reflector, a supply pipe, devices for outputting separated fractions, blades and a reflector have a curved shape, with a lid attached to the upper part of the blades, and devices for outputting separated fractions are a series of coaxial conical chambers.

Due to the fact that the blades have a curvilinear shape, the particles acquire a speed when leaving the disk, sufficient for the process of impact separation. The curvilinear shape of the reflector provides the reflection of the particles of the separated components at different angles, which allows to obtain a high degree of separation. A cover attached to the upper part of the blades prevents the occurrence of a ventilation effect and the expansion of the material. Due to the fact that the devices for outputting the separated fractions are coaxial, the classifier has relatively small dimensions.

The centrifugal classifier comprises a housing 1, a shaft 2 mounted therein, with a disk 3 fixed thereon, a cover 4 and blades 5 and provided with a rotary motion drive 9, a reflector 6, a supply pipe 7, and devices for outputting the separated fractions 8.

Figure 1 shows a diagram of a centrifugal classifier

Figure 2 shows a section aa

Centrifugal classifier works as follows. Bulk materials to be separated come from the supply pipe 7 to the surface of the rotating disk 3, are captured by the blades 5, and under the action of centrifugal forces move to the periphery. Then the particles of bulk materials hit the inner surface of the reflector 6, are reflected at different angles and enter the device for outputting the separated fractions 8.

The proposed centrifugal classifier at high performance has a simple design and small dimensions.

Claims (1)

A centrifugal classifier comprising a housing, a drive shaft mounted therein with a disk with blades mounted thereon, a reflector, a supply pipe, devices for outputting separated fractions, characterized in that the blades and reflector have a curved shape, with a lid attached to the upper part of the blades, and devices for outputting the separated fractions are a series of coaxial conical chambers.