Discharging device and discharging control method for planetary ball mill

Abstract

The invention discloses a material discharge control method for a planetary ball mill, which includes a single-chip PLC, and the single-chip PLC is used to control the feeding, grinding and discharging, wherein in the feeding step, the feeding device can simultaneously distribute the abrasive to multiple A planetary grinding cylinder (400) realizes continuous feeding; in the abrasive step, the turntable device (300) is a double-cone frustum structure, and multiple lining plates (425) and bottom plates (426) are arranged in the grinding chamber (423) The grinding surface (429) formed by splicing, has a slit (427) on the bottom plate (426), and has protrusions on the lining plate (425) and / or the bottom plate (426), which can prevent the adhesion of abrasive materials and reduce the wear of the grinding chamber and maintenance cost; in the discharge step, the upper, middle and upper parts of the sealed housing (510) are provided with a plurality of first discharge ports (512), and the bottom is provided with a plurality of second discharge ports (513), and the negative pressure generating unit (520) configured to form a negative pressure of a predetermined pressure in the discharge space to discharge abrasives of a predetermined weight from the first discharge port (512), and abrasives exceeding the weight are discharged from the second discharge port (513) and transported through the circulation channel Grind again to the feeding device, so as to realize further sieving of the abrasive, and grind again the abrasive with a large particle size.

Description

technical field [0001] The invention relates to the fields of crushing, grinding, mechanical force activation, mechanochemistry and mechanized alloy processing, in particular to a discharge device and a discharge control method of a planetary ball mill capable of realizing continuous discharge. Background technique [0002] The planetary ball mill is symmetrically arranged with a plurality of planetary grinding cylinders centered on the main shaft. When each planetary grinding cylinder revolves around the main shaft, it can also rotate itself. The impact energy of the lift and fall grinds the material down. During the continuous working process, repeated impact crushing and rolling and sliding grinding make the materials with large particles gradually become smaller and become fine powder. Since multiple planetary grinding cylinders work at the same time, the grinding efficiency is very high, but to achieve continuous and industrial production, it is also necessary to ensur...

AI Technical Summary

Problems solved by technology

The existing planetary grinding cylinders cannot realize continuous discharge, and the ground materials cannot be further screened and refined, and the inner wall of the grinding body is prone to wear after the material and the grinding body collide with the machine. Once damaged, the entire grinding machine needs to be replaced. Grinding cylinders, expensive to repair

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