A Symmetrical Combined Spiral Grinding Cylinder and Its Design Method

Abstract

The invention relates to a symmetrical combination spiral ore grinding barrel and a designing method thereof. The symmetrical combination spiral ore grinding barrel comprises a barrel body, and a feeding throat pipe, a discharging throat pipe and a transmission gear which are separately communicated with the end part of the barrel body, wherein the middle outer walls of the feeding throat pipe andthe discharging throat pipe are respectively sleeved with a stander left support and a stander right support, and the barrel body is formed by combining a plurality of eccentric cylinders in a butt-joint manner; and the eccentric cylinder comprises an inner columnar surface and an outer columnar surface, and an eccentric distance exists between the axis of the inner columnar surface and the axisof the outer columnar surface. In the ore grinding process, a higher relative speed and larger grinding force can be obtained between a material and a grinding medium, and the ore grinding efficiencyis higher; and meanwhile, by adopting the sectional combination structure, the difficulty in producing, transporting, disassembling and repairing the large-sized combined ore grinding barrel can be reduced.

Description

technical field [0001] The invention relates to the technical field of mining machinery and equipment, in particular to a symmetrical combined spiral grinding cylinder and a design method thereof. Background technique [0002] Ball mill is widely used in metal and non-metal beneficiation, cement plant, power plant, ceramics and other industries, and is an important equipment for mine ore grinding. The working principle of the ball mill is that when the cylinder rotates around the horizontal axis at a specified speed, the materials and grinding media in the cylinder will rise to a certain height with the lining of the cylinder under the action of centrifugal force and friction, and then break away from the lining. The material depends on the impact force, friction force and relative movement between the grinding media, between the materials, and between the material and the grinding media during the free fall or throwing of the grinding media, so that the materials are extrud...

AI Technical Summary

Problems solved by technology

However, due to the centrifugal load generated during the rotation of the eccentric structure of the cylinder, the life of the support bearing will be affected. This structure is more suitable for small mills; because the agitator on the main shaft will reduce the filling rate of the cylinder, it will also affect the filling rate of the cylinder. mill efficiency; in addition, the replacement and maintenance of the agitator is difficult

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