SU1375329A1 - Tumbling barrel - Google Patents

Abstract

The invention relates to the grinding of solid ores and materials, in particular to drum mills, and makes it possible to increase the grinding efficiency and reduce energy consumption. Inside the cylindrical body 1 there is a crushing roller, made prefabricated from rollers 2 and lifters 4, mounted on one axle and alternating with each other. The lifters 4 have paddles that draw out the undersized material, which is guided under the crushing rollers with the aid of an angled protrusion 7 on the back of the paddles. The cylindrical body 1 is rotated from the drive: The rollers 4 are configured to vertically move independently of each other. 2 Il.

Description

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FIG.

The invention relates to the grinding of solid ores and materials, namely drum mills, and can be used in the beneficiation of minerals, mining and chemical industries, in the production of building materials and in other fields.

The purpose of the invention is to increase the efficiency of the grinding process and reduce energy consumption.

FIG. 1 shows a drum mill; in fig. 2 shows section A-A in FIG. one.

Inside the cylindrical body 1, which is supported on the supporting rollers 5, there is a collecting roller consisting of 3 crushing rollers 2 mounted on one axle, between which the lifters 4 with blades 6 are placed. The blades on the back side have an angular protrusion 7 for guiding the scooped material under the crushing skating rinks. The diameter of the inner hole in each roller is greater than the diameter of the axis by an amount D, allowing each disc to move freely in a vertical plane.

All the lifters on the axle have fasteners that exclude their turning with respect to the axle (tongue, flat, spline, etc.), but allow some axial movement. Between the ends of the lifters and rollers installed rubber pads. At one of the ends of the axis, a thread is cut and a nut sitting on it through a spring (not shown) with

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five

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design pressure, excluding the turning of individual elements of the entire roller, but allowing some vertical movement of the rollers due to their large mass, creates a force sufficient to rotate the entire system as a whole. The material entering the mill is pressurized by rollers. When a large piece of material gets under the roller, the latter rises along with Os1, Yu. The remaining rollers continue to roll along the mill lining of the mill, grinding material. The coarse grains of material trapped in the inactive zone are scooped out with the paddle blades and guided into the core. In addition, it is possible and the free passage of large grains through the space between the rollers in the active zone. The working part of the rollers is lined with a wear-resistant material. The lining of the rollers and the lifter blades are replaced as they wear out.

Claims (1)

Invention Formula The drum mill, containing a rotating cylindrical body, and rollers located therein, mounted on a common axis, is characterized in that, in order to increase the efficiency of the grinding process and reduce energy costs, it is equipped with lifters rigidly mounted on the axis between the rollers, made with blades having from the back of the corner ledge.