SU952326A1 - Apparatus for disintegrating materials - Google Patents

Description

The invention relates to a grinding technique and is intended primarily for the fine grinding of ores and minerals in enrichment and metallurgical processes, as well as for grinding the mixing and dynamic activation of sturdy grams in materials.

A device is known comprising a cylindrical body with a centrally located shaft on which a conical plate with radial ribs II is mounted.

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The body may have stabilizing barriers over the plate, which do not allow the plate to twist the entire pillar of comminuted material in the body.

When the plate is rotated, the ribs attach a large radial velocity in the lower part to the ground Ipacia. In the lower part, it is thrown to the periphery, where the latter collides with the fixed pieces and crushes.

The drawbacks of the device are the high speeds of moving pieces of material along the radius of the plate, which is under considerable pressure from the top of the column of material being crushed.

which causes significant wear of the plate and ribs.

In addition, the applied rotation speeds of the plate are quite insignificant for using this device as a dynamic activator in the disintegrating materials.

The closest technical solution to the proposed is

10 a grinding device comprising a housing with a working member mounted on it on the shaft and screws. dispenser, the mechanism for adjusting the gap between the discs, the outlet and receiving ports and the drive.

The material is loaded in the center of the discs using a metering auger and worn out in an adjustable gap between the removable ring washers,

20 fastened respectively to a rotating and non-rotating disk 2.

However, in this device there is a high wear of the discs and abrasive washers and at the same time the device

25 has low productivity.

The aim of the invention is to increase its productivity and durability of its working bodies.

In order to achieve the set goal, in the device for grinding materials, comprising a housing with a working device and a metering device mounted on the shaft, a mechanism for adjusting the gap between the discs, the discharge and receiving branch pipes and the drive, the working bodies are made in the form of cup-shaped disks, each of which is provided with annular ribs located on the periphery of their working surfaces and radial ribs, and a retractable nipple is mounted at the lower end of the screw feeder.

In Fig.1 a device is given, general V.ID; in fig. 2 is a section A-A in FIG. one

The device is mounted on the bed 1 by means of two reducer semi-bodies 2 and 3, interconnected by a cylindrical casing from the side walls 4 and 5, the two component semi-perms 6 and 7.

Inside the casing, two discs 8 and 9 are mounted on the tubular shafts 10 and 11. The discs are mounted with an annular adjustable gap 12 of the required output material size.

The tubular shaft 10 is located in the direct connection of Q with an angle gear drive 13 with a drive through the semi-axis 14.

the shaft 11 has a splined connection with the intermediate tubular shaft 15, and the latter is connected in the same manner with the drive as the shaft 10, but with the opposite direction of rotation.

The discs 8 and 9 have radial ribs 16 at their periphery and can be reinforced with carbide plates 17 mounted with an optimal gap depending on the initial size of the materials.

The plates 17 are fixed on the ribs with bolts 18, for example, through oval holes with the help of toothed washers 19 and notched teeth on the plates 17 themselves.

Inside the tubular shaft 10 is mounted a pipe 20 with a screw feeder in the horizontal plane.

The outer part of the pipe 21 is connected by its opening with the receiving pipe 22, and the inside of the poacene between the disks 8 and 9 and ends with the vertical guide pipe 23.

Inside the pipe 23, a retractable pipe 24 is mounted, which is equipped with a toothed rack 25 with a protruding toothed surface through a slot 26 in the guide pipe 23 to the outside. The lower end of the nozzle 24 occupies any position in the zone 27,

The shaft 11 is supported inside the intermediate shaft 15 axially on the adjustable ring 28 by means of the thrust bearing 29. The ring 28 is moved to adjust the annular gap 12 and the gap between the ribs by various means, for example, by using stop bolts 30 that are screwed into the end cover 31 .

Inside the shaft 11 mounted shaft 32 adjusting the retractable nozzle-24

The shaft 32 rests in the seat of the guide nipple 23 and is equipped with gear 33 in engagement with the rack 2

In addition, the shaft 32 has a limiting shoulder 34 for the spring 35, which is supported by the other end of the annular protrusion of the shaft 11 through the thrust bearing 36.

The nozzle 24 has an oval hole 37, which accommodates the total cross section of the screw pipe 20 due to the condition of the movement of the nozzle 24 by the size of the control zone 27.

The lower part of the casing is a semi-obstruction 7 and the frame 1 has an opening in which the tray 38 is mounted.

The operation of the device consists in high-speed grinding of the lumpy or newly activated bulk material supplied by the screw feeder. A rial that is located between the ribs 16 is two mutually parallel layers and rotates together with its disks in opposite directions. The process can be wet or dry.

The material is crushed into the gap between the ends of the ribs 16 of the two disks or between the ends of the plates 17 under the action of centrifugal force, which squeezes both layers of material towards each other, while the ribs themselves remain mostly protected by the pieces themselves, the material being crushed. The material in the grinding process is in the disks in the clamped state by centrifugal force and, in addition to rotation together with the ribs of both disks, the weak radial flow is characterized by the material grinding speed. By moving the slider through the slatted mechanism, the centrifugal ring thickness can be increased or decreased. most at a constant number of revolutions of the discs, the force of the centrifugal interaction of two layers of material can be increased or decreased, depending on the strength of the material and specified performance.

In addition, the material is moved by a screw feeder 20 through a horizontal pipe 21 in the pipe 24, under the joint action of the screw and contact vibration with the rotary material, interacts with the latter in a similar way. Here, this principle not only 1 preserves the nozzle 24 from abrasion, but also simultaneously adjusts the concentricity of the rotating mass of material around the circumference, eliminating unbalance, and consequently reduces the vibration load.

Adjusting bolts 30 can be used to set any desired fraction of grinding, and spring 35 permanently fixes this adjustment.

The device acquires a versatility in use both for grinding and for dynamic activation of the burning materials under strict control of the size I of grinding.

Due to the significantly higher

The forces of interaction of two centrifugal mutually parallel layers of comminuted material with a large total speed significantly increase productivity.

Claims (2)

1. USSR author's certificate 700195, cl. B 02 C 13/22, 1979. 2. USSR author's certificate 622492, cl. B 02 C 7/14, 1979. /// 3 / o f / J ./