SU814453A1 - Planetary mill - Google Patents

Description

. This invention relates to the grinding and activation of mineral ores.

Closest to the proposed technical entity is a planetary mill, used for grinding ores, containing a horizontal shaft with support bearings and carrier, connected to the grinding drum through loading nozzles, discharge nozzles of the drums, on which satellite gears are attached, which are in engagement with the central gear wheel, as well as the drives and the central wheel 1.

A disadvantage of the known mill is that it is difficult to use it for wet grinding of materials and activation of pulps, since it is impossible to eliminate the splashing of liquid and pulp inside the mill housing, to exclude the ingress of solid inclusions into the gearing and submash. This significantly reduces the reliability and durability of the device and worsens the working conditions.

The purpose of the invention is to increase the reliability of the structure when working with suspensions.

This goal is achieved by the fact that the center wheel is made in the form of a cylindrical face key and is equipped with a partition installed inside the shell in the diametral plane, covering the shaft and discharge pipes of the drums and forming with the shell and end cover a cavity inside which the ends of the discharge pipes are located There are holes in the end cap for unloading the finished product.

FIG. 1 shows a planetary mill, a slit; in fig. 2 - consolidation of the loading unit.

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The mill contains a loading device 1 with nozzle 2, working drums 3 filled with melchischih bodies. On the discharge nozzles of the 4 drums, satellites 5 are installed, pre-5 assigned to rotate abans aban around their own axis. The satellites 5 are driven in rotation by a central gear wheel 6, which serves simultaneously as a collecting container for the treated material.

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The gear wheel is made in the form of a cylindrical shell 7 with an end cap 8 having openings .9 for unloading the finished product. Inside the shell 7 is installed in the diametral plane of the partition wall 10, covering the horizontal shaft 11 and the discharge nozzles 4 of the drums 3, forming a cavity 12 in which the ends 13 of the discharge I nozzles 4 are located.

The shaft 14 of the central wheel 6 is fixed to the pulley 14, which is transmitted to it by rotation from the electric motor. A pulley 15 is mounted on the central shaft, driving the carrier 16 with working drums and a partition 10.

The treated material enters the mill casing 17 and is withdrawn from the casing through nozzle 18. The pulleys 14 and 15 are rotated from individual electric motors.

The boot unit 1 of the mill is made with a seal containing fittings 19 and 20, a rubber cuff 21, a housing 22, a labyrinth 23, a horizontal shaft 24 and a frame 25 of the mill.

During the operation of the mill, the initial suspension enters through the nozzle 11 for the load-carrying device 1 into the cavity of the shaft 24 and is fed by centrifugal forces into the grinding drums 3. The drums rotate with the carrier 16 and, moreover, around their axes. The material is activated in the field of centrifugal forces by grinding bodies and is output to a hollow central wheel b, which serves as an assembly tank, which builds at a low angular velocity. Through the openings in it, the material is led out into the mill housing and through the nozzle 4 is brought out. A pump can be installed to recycle material through the mill.

Consolidation boot device works as follows.

Through nozzle 19 pulp is supplied, through nozzle 20 - pressurized water

0.5 kg / cm which prevents the pulp from entering the rubber cuff 21 and out. When the cuff is worn, water enters the labyrinth seal formed by the housing 22 and the labyrinth 23. If leakage occurs, the cuff 21 must be replaced.

Sealing the loading device eliminates splashing of liquid at the inlet of the drums and allows efficient use of reagents, allows working with pulps with different content of solid inclusions in the liquid (T: W) and improves working conditions.

invention formula

A planetary mill containing a horizontal shaft with support bearings and a carrier connected to the grinding drums by means of loading nozzles, and discharge nozzles of the drums on which the satellite gears that are in engagement with the central gear wheel, as well as the drives of the shaft and the central wheel, are fixed characterized in that, in order to increase the reliability of the design when working with suspensions, the central wheel is made in the form of a cylindrical shell with an end-lobe and is equipped with Inside the sleeve in a diametral plane of the wall, embracing the shaft and handling the reels and tubes forming with the shell and the end cap cavity within which are located the ends of the discharge nozzles, wherein in the end face cover provided with openings for discharging the finished product.

Sources of information taken into account in the examination

1. USSR author's certificate No. 604578, cl. B 02 C 17/08, 1976.

Claims (1)

Claim A planetary mill containing a horizontal shaft with thrust bearings and a carrier connected to the grinding drums by means of loading nozzles, and unloading nozzles of the drums on which satellite gears are fixed, engaged with the central gear wheel, as well as shaft and central wheel drives, characterized the fact that, in order to increase the reliability of the design when working with suspensions, the central wheel is made in the form of a cylindrical shell with an end face and equipped with an internal For a shell in the diametrical plane, a partition covering the shaft and unloading nozzles of the drums and forming a cavity with a shell and an end cover, inside which the ends of the unloading nozzles are located, with holes for unloading the finished product in the end cover.