SU1316719A1 - Centrifugal classifier - Google Patents

Abstract

The invention is intended for the aerodynamic classification of dispersed materials in the field of centrifugal forces and can be used in the building materials industry and other sectors of the national economy. The purpose of the invention is to increase the classification efficiency by uniformly distributing the carrier medium between the gaps 7 between the disks (D) 6. In the case (K) 1 of the classifier, a rotor (P) with a package D 6 is installed on the vertical drive shaft and perpendicular to the P axis and forming gaps 7 among themselves. In the axial part P, channels with equal windows 9, which connect the cavities respectively, are equal in cross-sectional areas. channels with gaps between D 6. Each channel is individually communicated with a pipe (P) 4 output carrier medium. Windows 9 are evenly distributed on the outer surface of P and the gaps between D 6. The channels and windows 9 are symmetrically located in the volume P relative to its axis. Through P 2 suspended in the carrier medium, the initial mixture enters K 1. T eel particles settle on the walls of K 1, slide along them and enter collection 3. Light particles carried by the flow of the carrier medium enter the gaps 7. The lightest particles with the flow carrier environment through the windows and channels 8 is carried out in the P 4. 1. f-ly, 6 ill. CO from CD

Description

The invention relates to devices for the aerodynamic classification of dispersed materials in the field of centrifugal forces and can be used in the building materials industry, chemical, pharmaceutical and other sectors of the national economy.

The aim of the invention is to improve the classification efficiency by uniformly distributing the carrier medium between the gaps between the disks.

FIG. 1 depicts a classifier, general, its form; in fig. 2 - rotor, general view; in fig. 3 - the same, top view; in fig. 4, 5 and 6 - sections A-A, BB, B-B in FIG. 2 respectively.

The centrifugal classifier comprises a housing 1, a nozzle 2 for entering the medium with an initial mixture, a collection 3 of coarse product, a nozzle 4 for outputting the carrier medium with a thin product, and a rotor fixed in the housing on the drive shaft 5 with a disk pack 6, perpendicular to the rotor axis and forming their gaps between themselves. In the axial part of the rotor, a system of channels 8 is made, individually connecting the interdisk gaps 7 with the nozzle 4 of the output carrier medium with a thin product. Channels 8 are evenly distributed around the circumference. Adjacent channels 8 open through windows 9 into various inter-disk gaps 7. The system of channels 8 and windows is symmetrical in the volume of the rotor relative to the axis of rotation.

The collection of rough product is set at the bottom of the Cornus. Channels and windows of equal size but cross-section. Each window corresponds to a specific channel. Windows are evenly distributed around the circumference of the rotor and the gaps between the disks. Classifier works as follows.

Through the pipe 2, the initial mixture suspended in the carrier medium enters the body 1, where under the action of inertial and gravitational forces it undergoes a preliminary separation. Heavy particles are deposited on the walls of the body, slide along them and fall into the collection 3. Light particles carried by the flow of the carrier medium fall from

fue.Z

in the interdisk gaps 7 of the rotor, where they undergo final classification in the field of centrifugal forces of vortex flow. Lightest particles breaking through with the flow

the carrier medium centrifugal forces reach the axial part of the rotor and through the windows 9 and the channels 8 are carried into the nozzle 4 of the output carrier medium with a thin product.

Due to the fact that the interdisk gaps communicate with the carrier outlet pipe with a thin product through separate channels, the flow rates of the carrier medium and, consequently, the conditions for the separation of the dispersed material in these gaps will also be the same. Thus, the efficiency of classification in the device as a whole turns out to be equal to the efficiency of classification in a single interdisk gap. The symmetrical arrangement of the system of windows and channels additionally balances the rotor.

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Claims (2)

1. Centrifugal classifier, including a housing with coarse product collectors in the lower part and a carrier inlet with the initial mixture, mounted in a housing on a vertical drive shaft rotor with a pack of disks, perpendicular to the rotor axis and forming gaps between themselves, outlet of the carrier medium with a thin product, communicated with gaps between the disks, characterized in that, in order to increase the classification efficiency due to the even distribution of the carrier medium between the gaps between the disks, in the rotor, p vnovelikie the transverse sectional m channels with equal windows, the cavity communicates with the respective channels by gaps between the disks, with each channel individually communicates with the carrier medium output pipe, and window ravnomer0 but are distributed along the outer surface of the rotor and the gap between the discs. 2. Classifier according to claim 1, characterized in that the channels and windows are symmetrically located along the volume of the rotor about its axis. fig-z fig Fig 5 Fig 6