SU1563748A1 - Arrangement for grinding materials - Google Patents

Abstract

The invention relates to mechanical engineering and can be used for fine grinding of materials. The purpose of the invention is the expansion of technological capabilities by grinding material with different size. The device comprises a cylindrical body 1, inside which a roller 2 is coaxially arranged with a vertical axis of rotation, the lateral surface of which in cross section has the shape of a spiral turn. In the upper part of the cylindrical body there is a loading and unloading unit. Below the grinding zone, an annular shaped chamber is installed with tangentially located channels for supplying a drying-transporting agent, and is separated from the grinding zone by a grid with nozzles installed radially at an angle to the vertical. 2 hp f-ly, 2 ill.

Description

(54) DEVICE FOR GRINDING MATERIALS (57) The invention relates to mechanical engineering and can be used for fine grinding of materials.

The purpose of the invention is the expansion of technological capabilities by grinding material with different sizes. The device comprises a cylindrical body 1, inside of which a roll 2 with a vertical axis of rotation is coaxially located, the lateral surface of which in the cross section has the shape of a spiral coil. In the upper part of the cylindrical body there is a loading and unloading unit. A ring-shaped chamber with tangentially located channels for supplying a drying transporting agent is installed below the grinding zone, and it is separated from the grinding zone by a grill with nozzles mounted radially at an angle to the vertical. 2 s.p. f-ly, 2 ill.

SU, 1563748

The invention relates to mechanical engineering and can be used for fine grinding of various materials, for example, coal.

The purpose of the invention is the expansion of technological capabilities by providing grinding material with different sizes.

In FIG. 1 shows a device, a cross section; in FIG. 2 same ', longitudinal section.

The device for grinding materials consists of a stationary cylindrical body 1, inside of which is coaxially located a roller 2 having a vertical axis of rotation and in cross section having the shape of a spiral coil. In the upper part of the cylindrical body there is a loading and unloading unit of the fpy6a type in the pipe. The inner pipe 3 is designed to (feed into the device the material to be crushed, and the annular gap formed between the concentrically located inner 3 and outer ”pipe 4 serves to exit the finished ((product .. Channels. 5 and 6, located opposite and tangentially, serve as a drying-transporting agent The lower part of the casing is closed by an annular air chamber 7, to which channels 5 and 6 are suitable. The roll 2 is mounted on the drive shaft 8. Below the roll 2 is a nozzle grill 9, which serves to give I have a certain direction and speed of the flow of the drying transporting agent. Design (allows the roll roller .2 to be movably mounted on the drive shaft 8, which provides for the roll to roll back if non-grinding materials and objects fall into the grinding gap and return it to its original position. In this case, roll 2 is installed, for example , on the cross-shaped shaft 1Q of the drive shaft 8 and is spring-loaded by the system;

11. On the day of improving the grip of the milled material, the working surface of the roll 2 and the housing 1 may have a bevel at an angle p> ·.

The device operates as follows.

The source material to be crushed through the pipe 3 enters the roller 2, which rotates from the drive shaft 8, and is discarded by centrifugal forces, 'falling into the working space between the roller 2 and the housing 1. The grinding process occurs in a gradually changing gap between the roller 2 and the housing 1 by crushing and abrasion. Through channels 5 and 6 of the annular air chamber 7, a drying granulating agent is fed into the device through the nozzle grill 9 to dry and blow the finished product from the grinding zone and then carry it out through the annular gap.

The finished product, moving with the main stream of the drying and transporting agent inside the housing in a spiral, the direction of which is provided by the nozzle apparatus 9, is separated. Large fractions are separated in the process of separation due to centrifugal forces and returned to the moulder on the roll 2. Non-grindable materials and objects fall out through the nozzle grill 9 and are removed from the device.

Thus, the proposed device achieves the combination of crushing and fine grinding processes, which eliminates the need for separate crushers and mills with the corresponding savings in capital

ny and operational costs. rethen F o R mule and s about b one,. Device for shredding

Claims (3)

material ov containing a housing and a roll installed in it on the * drive shaft ι, characterized in that (in order to expand technological capabilities by providing grinding material with different sizes, the roll is installed coaxially with the housing, and the side surface of the roll in cross section has the shape of the spiral. 2. The device according to p. 1, characterized in that the roll is freely mounted on the drive shaft using a cruciform carrier with spring-loaded links. 3. The device according to paragraphs. 1 and 2, characterized in that it is equipped with an annular chamber mounted under the roll with tangentially arranged channels for supplying a drying-transporting agent in communication with the body cavity through a grate with nozzles mounted radially at an angle to the vertical.