SU1706695A1 - Rotary mill - Google Patents

Abstract

The invention relates to the design of mills for the fine grinding of bulk materials and can be used in the chemical, pharmaceutical and other industries of the industry. The invention aims to increase productivity and reduce wear beat. In a rotor mill, the rotor is made in the form of a hollow cylinder with longitudinal channels 4 and convex beaters 5, while on the inner side of the rotor, directly behind the channels 4, plates 3 are installed, having a slope in the direction of rotation of the rotor, and the beams are made convex, the direction of the convexity, with the exception of the extreme rows oriented in the direction of rotation of the shaft, it is reversed when moving to the adjacent row. 2 Il. ate

Description

FIG. /

The invention relates to the design of mills for the fine grinding of bulk materials and can be used in the chemical, pharmaceutical and other industries of the industry.

The purpose of the invention is to increase productivity and reduce wear.

FIG. 1 shows a general view of a rotary mill; in FIG. 2 is a section A-A in FIG. 1.

The rotor mill contains a housing 1, on which a rotor 3 with longitudinal channels 4 and convex beams 5 is located on the drive shaft 2. A distributor 7 is fixed on the end of the rotor 3 on the side of the loading pipe 6. At the same time, on the inside of the rotor 3 with an interval through one channel plate 8, having a slope in the direction of rotation of the rotor. Extreme rows beat 9 and 10 are oriented with a bulge in the direction of rotation of the rotor, and the bulge beat the inner rows change to the opposite when moving to the adjacent row.

The internal rows with beams, which are convex in the direction of rotation of the rotor, have two through holes 11, each of which is oriented towards the adjacent row of beats.

The rotary mill works as follows

The crushed material is directed through the loading bead b to the distributor 7 and, under the action of centrifugal forces, enters the working space between the rotating rotor 3 and the housing 1. The initial large pieces of material begin to collapse intensively as a result of collisions with blows. Further regrinding of the material occurs at the base without interacting directly with the beams, and as a result of collision of opposite vortex flows along the rotor surface, created due to the shape and orientation of the beats, as well as due to the intense circulation of the material in the radial direction, which the plates 8 and channels 4 provide , figs, 1 and 2 arrows indicate the direction of movement of the streams of the dust fraction in

the mill. The finished product is discharged through the discharge nozzle 12.

The proposed rotary mill reduces wear on the working bodies and increases the intensity of the grinding process by implementing self-grinding elements in the counter vortex flows in the mill.

Claims (1)

Invention Formula A rotor mill, comprising a housing and a rotor installed therein with beams and channels, a distribution cone, loading and unloading nozzles, characterized in that, in order to increase performance and reduce wear beat, the rotor is made in the form of a hollow cylinder and the channels on the rotor are longitudinal, with equal intervals between each other, and with an internal one. side of the rotor behind the channel set with interval through one channel of the plate with an inclination in the direction of rotation of the rotor, and the beams are made convex, and the direction of the convexity, with the exception of the extreme rows, is reversed when the transition to the adjacent row, and the rows with billows, which are convex in the direction of rotation of the rotor, have two through holes, each of which is oriented towards the nearby row, and beat extreme rows are oriented in the direction of shaft rotation. Aa Faye. Q