SU770532A1 - Drum disintegrator - Google Patents

Description

The invention relates to the technique of grinding solid materials and can be used for fine crushing of products in the chemical, engineering, mining, coal 5 industries, as well as in the building materials industry.

Known drum grinder, containing a cylindrical body with chambers of preliminary classification and grinding, massive grinding bodies freely located in the grinding chamber, loading and unloading devices, support rollers and drive [Υ]. ' " 15

The disadvantages of this grinder are the low grinding efficiency due to the increased circulation of the material through the grinding zone and the significant dimensions of the installation even 20 with a relatively small size of the grinding chamber.

The closest technical solution to the invention is a drum grinder, containing a perforated cylindrical housing with chambers of preliminary classification. and grinding, freely located in the last grinding rollers, a cylindrical casing, covering-CS

2

the grinding chamber with a gap, in which the helix blades, the loading device, the supporting structure and the drive [U] are located along a helical line.

Perforation of the casing, as well as the presence of a casing around the grinding chamber, significantly reduced the dimensions of the chopper and increased the efficiency of work. In this grinder, the discharge vanes located between the grinding chamber and the casing form screw-shaped streams, along which, under the action of their own weight, the crushed material coming out through the openings of the body is transported during rotation of the latter and removed from the grinder.

However, during periodic operation, the crushed material compresses in helical streams and reduces their cross-section or completely clogs the material output. In the first case, the capacity of the shredder decreases, and in the second, the work of the spiral streams is stopped and cleaned, violating the integrity of the shredder design. In addition, there are difficulties tehnolbgicheskih

3

770532

four

character in the manufacture and installation of the discharge blades. ·

The purpose of the invention is to increase the efficiency and simplify the manufacture and maintenance of the shredder.

The goal is achieved by the fact that the proposed grinder contains a perforated cylindrical body with chambers of preliminary classification and grinding, freely located in the last grinding rollers, a cylindrical casing covering the grinding chamber with a gap, in which the discharge vanes, the loading device, the supporting structure are arranged along a helical line and the drive, the discharge blades are mounted on the outer surface of the grinding chamber, and the casing is mounted on the supporting structure.

Fixed installation of the casing and securing the discharge blades only on the outer surface of the grinding chamber allow the rotating housing to turn into a screw conveyor for transporting the crushed material to the discharge opening, which prevents clogging of the discharge openings and the gap between the casing and the housings. In addition, this design of the shredder simplifies its manufacture, as there is no need for joint fitting of parts during installation and facilitates maintenance due to the ability to inspect and repair transport equipment without disturbing the integrity of the shredder.

The drawing shows the proposed drum grinder, a cut through the body.

The drum grinder contains the supporting structure 1, onto the cotofgai the cylindrical casing 2 is fixedly fixed, inside which is a perforated case with chambers 3 and 4 of preliminary classification and grinding. The discharge blades 5 are mounted on the outer surface of the grinding chamber 4, and the grinding rollers 6 are freely located inside the grinding chamber. The blind end of the grinding chamber is connected to the drive shaft (drive not shown), and the inlet is adjacent to the preliminary classification chamber 3 supports 7. On the inner surface of the chamber 3 of the preliminary classification there are transport blades 8 for feeding material into the grinding chamber 4. A loading device 9 is located at the entrance to the preliminary classification chamber. The discharge manifold 10 is fixed on the supporting structure under the preliminary classification chamber.

The grinder works as follows.

Material through the loading device 9 is fed into the chamber 3. pre-classification. Small particles that have passed through the housing opening are discharged from the grinder through the collector 10, and large particles from the preliminary classification chamber 3 enter the grinding chamber 4, where they are ground by rollers 6. The crushed material passes through the perforated surface of the grinding chamber and is fed by blades 5 to the discharge collector 10.

Claims (1)

Claim Drum grinder containing perforated cylindrical body with pre-classification and grinding chambers, freely located in the last grinding rollers, a cylindrical casing covering the grinding chamber with a gap in which discharge vanes, loading device, supporting structure and drive are located along the in-line line, that, in order to improve work efficiency and simplify manufacturing and maintenance, the discharge vanes are mounted on the outer surface of the chambers ry grinding, and a casing mounted on the support structure.