SU18594A1 - Sharov Mill - Google Patents

Description

The invention modifies a ball mill with an outer screen drum located concentric to the crushing 6apa6aftia, and: a helical blade placed between both drums and rotating with them around their common axis. In the proposed mill, a valve with a baffle is used in the crushing drum to reverse the processing of non-sifted material, and a special device in the receiving bucket is arranged to regulate the feed. The authors believe that their invention will speed up the process of crushing and sifting the material, and will reduce the maintenance of the mill.

In FIG. 1 shows the mill in axial vertical section; FIG. 2-drums of the mill in horizontal projection and FIG. 3-separately cylindrical valve.

The material to be crushed is accepted by bucket 1, worn on a pivot axle 2, inside which, cylindrical valve 3 is rotatably installed, either with a small gap in the walls. At axle 2 and on valve 3 there are equally spaced transverse slots correspondingly 2 and 3. By turning the valve 3 at different angles behind the flywheel, its 3 can be adjusted

the size of the inlet openings 2 and 3 of the receiving bucket 1 to the inside of the crushing drum 4. The drum 4 rotates together with the sieve drum 5 enclosing it and the helical blade b located between the cylindrical surfaces of both drums. The material that has entered the crushing drum is crushed and rubbed by balls (iron, steel, and porcelain balls, rolling in it) and through the grid 7, with the help of a partition 7, passes into the annular cavity, where it is picked up by a helical blade. Partially sifted through the sieve surface of the drum 5, the pounded material is collected in the fixed casing 9, then the pad is down. The same material, which did not pass through the sieves, is carried by the screw blade b to the valve in the crushing drum 4, where it is discharged by the partition 8 back into the inside of the drum 4, for further processing (valve 8 is open in its upper position and closed when turning the drum he will occupy the lower position).

Thanks to such a device, multiple processing of the material in the crushing drum is achieved, while at the same time removing from it the ground powder mass, with the ability to adjust the valve, 3

in the nutrient device, the flow of material is consistent with the production of the mill.

Subject patent.

1. A ball mill with an outer concentric sieve drum and with a helical blade placed between the sieve and crushing drums and rotating around them

, S. ..; - common axis, characterized by the fact that

a valve 8, which serves for the return inlet of the descent from the screen drum to the crusher, is located in front of the partition 8. 2. At the ball mill described in paragraph 1, the use of a nutrient attachment consisting of passing through the receiving mill; a bucket 1 of a hollow axle 2 having notches 2, inside of which a rotatable cylindrical rear body 3 with notches 3 is placed.