RU2255810C1 - Power-transfer component of a grinding mill - Google Patents

Abstract

FIELD: comminution of fractional materials.

SUBSTANCE: the invention is intended for comminution of fractional materials. The power-transfer component of a grinding mill has a lug fixed on an effective surface of the grinding mill body. The lug of the power-transfer component has two bases, and by one of the bases it is fixed on then effective surface of the grinding mill body. The diameter of the indicated circumference of this base is equal to 1/30 ÷ 1/8 of the lengths of the grinding mill, and the diameter of the indicated circumference of the other bases makes 1/60 ÷ 1/16 of the lengths of the grinding mill. The lateral surfaces of the lug of the power-transfer component are made curvilinear and concaved inside the body of the of the power-transfer component. The lateral surfaces of the lug may be supplied with additional lugs, which are spaced from each other by a distance equal to 1/3 ÷ 2/3 of the mean diameters the grinding body. The invention allows to reduce a wear-out of the power-transfer component and to decrease its metal consumption.

EFFECT: invention allows to reduce a wear-out of the power-transfer component and to decrease its metal consumption.

2 cl, 2 dwg

Description

The invention relates to devices that are designed for grinding fractional materials, for example, mills, and can be used in cement, mining and other industries.

Known energy-transmitting element of the mill, including a protrusion, mounted on the working surface of the mill body (see, for example, AS USSR No. 1344411, 02 02 17/22, publ. 1987).

A disadvantage of the known energy-transmitting element of the mill is its intensive wear during operation due to the geometric shape, high metal consumption.

The basis of the invention is the task of reducing wear of the energy-transmitting element and the reduction of its metal consumption.

The problem is solved in that in the energy-transmitting element of the mill, including the protrusion mounted on the working surface of the mill body, the protrusion of the energy-transmitting element is made with two bases and one of the bases, the protrusion is fixed on the working surface of the mill body, while the diameter of the circumference of this base is 1 / 30 ÷ 1/8 of the length of the mill, and the other base - 1/60 ÷ 1/16 of the length of the mill, and the lateral surfaces of the protrusion of the energy-transmitting element are made curved and concave into the body of the last about, and the side surfaces of the protrusion can be equipped with additional protrusions, which are placed at a distance from each other, equal to 1/3 ÷ 2/3 of the average diameter of the grinding body.

Since the protrusion of the energy-transmitting element is made with two bases and one base, the protrusion is fixed on the working surface of the mill body, while the diameter of the described circle of the base, by which the protrusion is fixed on the working surface of the mill body, is 1/30 ÷ 1/8 of the length of the mill, the other base is 1 / 60 ÷ 1/16 the length of the mill, and the side surfaces of the protrusion of the energy-transmitting element are made curved and concave into the body of the latter, and the side surfaces of the protrusion can be provided with additional protrusion E, which are arranged at a distance from each other equal to 1/3 ÷ 2/3 of the average diameter of the grinding bodies wear reduction is provided by the energy transmission member and reduction of its metal content.

Figure 1 shows a power transmitting element, a top view; figure 2 is a section aa, side view.

The energy-transmitting element of the mill contains a protrusion 1 mounted on the working surface 2. The protrusion 1 has a lower 3 and upper 4 bases and a rib 5. On the lateral surface 7 of the protrusion 1, additional protrusions can be made 6. The lateral surfaces 7 are curved and concave into the body of the protrusion 1 .

The energy transmitting element operates as follows.

During rotation of the working surface of the mill body, the energy-transmitting element, when passing through the grinding feed zone, destroys the inactive loading core by curved surfaces 7, which increases the grinding efficiency. Since the surfaces 7 are made in a curved shape and are concave into the body of the element 1, and the diameter of the described circumference of the base, by which the protrusion 1 is fixed on the working surface 2, is 1/30 ÷ 1/8 of the length of the mill, the other base is 1/60 ÷ 1/16 of the length mills, grinding bodies acquire a direction of movement strictly along the longitudinal axis of the grinding device. This leads to the fact that the entire curved part of the surface 7 is involved in the grinding work. The possible implementation of the surfaces 7 with additional protrusions 6 allows the grinding bodies to communicate an additional rotational movement.

Intense wear is eliminated by the fact that the grinding bodies roll over rather than slide along the concave surfaces 7 of the protrusion 1 and relative to each other.

The overall dimensions of the protrusion 1 are selected experimentally.

Claims (2)

1. The energy-transmitting element of the mill, including the protrusion mounted on the working surface of the mill body, characterized in that the protrusion of the energy-transmitting element is made with two bases, one of which the protrusion is fixed on the working surface of the mill body, while the diameter of the described circle of the base by which the protrusion is fixed on the working surface of the mill body is 1 / 30-1 / 8 of the length of the mill, the other base is 1 / 60-1 / 16 of the length of the mill, and the side surfaces of the protrusion of the energy-transmitting element are made by a curvilinear bubbled and concave inside of the last body. 2. The energy-transmitting element according to claim 1, characterized in that the side surfaces of the protrusion are provided with additional protrusions that are placed at a distance from each other equal to 1 / 3-2 / 3 of the average diameter of the grinding body.

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