Feeding device for horizontal planetary ball mill

Abstract

The invention discloses a feeding device for a horizontal planetary ball mill, which comprises a revolution turntable provided with a material passage, wherein a feeding zone is arranged in the revolution turntable, the outer wall surface of the revolution turntable is provided with an opening and a feed pipe which is fixed on a stander and is inserted into the opening at certain angle, and the upper end of the feed pipe is provided with a material hopper; the revolution turntable is provided with a hollow shaft corresponding to each planetary mill barrel respectively, one end of the hollow shaft is connected with the end of the planetary mill barrel and moves along with the end part, while the other end is supported on the inner lateral wall of the revolution turntable through a bearing; and a large fan blade and an arc chute are arranged in the material passage on the revolution turntable, and an internal spiral feeder is arranged in the hollow shaft. Because the discharge area of the hollow shaft is large, the hollow shaft can transport materials of which the particle diameter is less than 80 millimeters and the particle size distribution is uneven; and simultaneously, under the action of a fan with the large fan blade, the air can be transported into the planetary mill barrel, and the problem of material leakage and dust raising on the peripheries of the revolution turntable and a planetary mill main shaft, thus the feeding device has longer service cycle and is more simply to replace and maintain.

Description

technical field [0001] The invention relates to a ball mill, in particular to a feeding device of a horizontal planetary ball mill capable of realizing continuous production. Background technique [0002] The horizontal planetary ball mill (hereinafter referred to as planetary mill) is equipped with multiple grinding cylinders horizontally with the main shaft as the symmetrical center. When each grinding cylinder revolves around the main shaft, the grinding cylinder itself also rotates. Grinding body (generally steel ball, steel segment) grinds the material by the impact energy of lifting and falling the grinding body when the cylinder rotates. During the continuous working process, the repeated impact crushing and rolling and sliding grinding make the bulk materials gradually become smaller and become fine powder. [0003] Since the planetary mill has multiple grinding cylinders working at the same time, the processing efficiency is very high, but to achieve continuous and...

AI Technical Summary

Problems solved by technology

[0005] 1) Due to the installation of the screw device in the hollow shaft, the effective conveying area of ​​the hollow shaft is reduced, which does not meet the technical requirements for conveying the maximum amount of materials to be ground into the grinding cylinder. When the problem is serious, it cannot even meet the required conveying capacity of the grinding capacity.

[0006] 2) Due to the characteristics of the structure of the screw conveying method, it is determined that the feeding device can only convey small particles or powders with a particle diameter of less than 6mm into the grinding cylinder, which limits the scope of the planetary mill for grinding raw materials, such as the material to be ground When the diameter of a large number of particles reaches 10-80mm, the conveying device cannot operate normally

[0007] 3) Due to the limited effective area of ​​the hollow shaft, the hollow shaft can only be used for conveying materials, and for some grinding processes that require ventilation in the grinding cylinder, there is no ventilation condition

[0008] 4) Due to the complex structure, the parts are easy to wear and the fixing, installation and sealing processes are all complicated

[0009] 5) The feed inlet is set at the center of the planetary mill—that is, the position where the revolving disc and the planetary mill spindle intersect. There are problems such as difficult sealing technology, easy material leakage, and dust generation, which will cause certain environmental pollution.

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