Subcritical variable-speed ball mill

Abstract

The invention discloses a subcritical variable-speed ball mill, which comprises a base, a ball mill barrel, a motor and a hydraulic coupler, wherein the motor is controlled by using a control circuit; a main shaft of the motor is connected with a clutch-hydraulic coupler-reduction box in sequence; and an output shaft of the reduction box is in mechanical transmission connection with the ball mill barrel. Compared with the prior art, the subcritical variable-speed ball mill has the advantages: limit on the critical rotating speed of the conventional ball mill is broken through, the ball mill can well and accurately rotate at a variable speed between 0.5nk and 1nk, the defects of short grinding distance caused by small relative speed difference of inertia motion of materials and ballstone during constant-speed rotation of the conventional ball mill are overcome, the contact frequency of a raw material and ballstone is increased, the smashing and grinding efficiencies of the ball mill are increased, the ball milling time is shortened, electric energy is saved, energy is saved by 30-50 percent in comparison to a ball mill which cannot rotate at a variable speed, the start-up and speed change of the ball mill are stable and do not impact a power grid, and the like.

Description

Technical field: [0001] The invention relates to various technical fields such as ceramics, ore dressing, cement, etc., and especially refers to a sub-speed variable-speed ball mill. Background technique: [0002] At present, the ceramic industry often adopts the method of ball milling to obtain fine raw materials. The basic principle of the ball mill is to add mixed raw materials (including a variety of hard stones and mud), water and grinding bodies of different sizes and grades into a hollow cylinder, commonly known as ball stones, and the AC motor drives the cylinder to rotate at a constant speed. The impact and friction of the ball stone and the raw material are used to crush and grind the raw material, and finally obtain a ceramic slurry that meets the requirements of particle size and particle size distribution. The actual production experience of the ball mill shows that: when the model of the ball mill is constant, the raw materials and water added are constant, an...

AI Technical Summary

Problems solved by technology

There is a lack of this special variable speed ball mill in the market

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