High-intensity nutation centrifugal ball-bearing mill

Abstract

The invention relates to a nutation centrifugal ball-bearing mill, comprising a base, a power input belt pulley, a main shaft, an inclined hole shaft sleeve, an up-down milling chamber, a support and a winnowing mechanism. Nutation centrifugal movement drives a medium and a material to do three-dimensional high-intensity centrifugal movement, and the medium in the same weight or volume can obtain higher kinetic energy, thus the sphere diameter of the medium is reduced, the number is increased, and the grinding probability is increased; and compared with the traditional drum-type ball-bearing mill under the condition that equivalent power is input into the centrifugal ball-bearing mill, the overall dimension is reduced by 2 / 3, the total weight of equipment (containing the medium) is reduced by 3 / 5, the total system energy consumption is reduced by more than 30%, and the energy conversion rate of the medium in unit volume or weight can reach up to more than10 times of that of the traditional ball-bearing mill. The centrifugal ball-bearing mill provided by the invention is especially applicable to superfine grinding.

Description

Technical field: [0001] The invention belongs to the technical field of powder grinding, and in particular relates to a high-efficiency powder grinding equipment with no critical rotational speed limitation which enables grinding medium balls and materials to obtain high-strength three-dimensional centrifugal acceleration through mechanical nutation motion. Background technique: [0002] The existing powder grinding equipment, such as the traditional cylinder ball mill, is limited by the critical speed, and the grinding medium (ball or rod) can only be thrown or dropped to grind the material at a low acceleration of gravity, so the equipment cannot be effectively The kinetic energy is transferred to the medium, so the energy consumption is very high. Compared with the traditional cylindrical ball mill, the present invention has no critical rotational speed because the mill chamber does not rotate around the main shaft, and the semi-circular lower mill chamber with a pull bar...

AI Technical Summary

Problems solved by technology

[0004] The high-strength centrifugal mill reported in the above-mentioned books and periodicals adopts sieving and unloading, which inevitably makes the life of the cone-bottom sieve surface unable to be guaranteed, and the qualified powder cannot be discharged in time, which affects the efficiency.

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