SU1003932A1 - Apparatus for sorting - Google Patents

Description

(54) DEVICE FOR SORTING

one

The invention relates to installations for sorting the size of bulk materials and can be used in electrical engineering for sorting, in particular, press material, as well as in other industries.

A screen for grading granular materials is known, comprising a casing with spiral screens, mounted on the base by means of elastic elements and vertical guides 1.

The drawbacks of such a device are design complexity and large size.

The closest to the proposed technical essence and the achieved effect is a device for sorting, containing a spring-loaded body with screening surfaces arranged inside it, made in the form of grids, a loading device made in the form of two conical surfaces, vibrators and discharge pipes 2.

The disadvantage of such a device is the low quality of sorting, the complexity of the design and the impossibility of ensuring smooth control of sowing modes.

The purpose of the invention is to improve the quality of sorting and simplify the design.

The goal is achieved by the fact that in a sorting device containing a spring-loaded body with 5 screening surfaces located inside it, made in the form of nets, a loading device made in the form of two conical surfaces, vibrators and discharge pipes, vibrators are installed 10 an angle to it, the vibrators being placed in the same plane and equally spaced from the other along the perimeter of the housing.

In addition, the vibrators are set at an angle of 25 ° and are equipped with a frequency converter 15.

In addition, the discharge nozzles are placed one in the other coaxially.

FIG. 1 is a schematic diagram of the device; in fig. 2 - core 20, top view; in fig. 3 shows the connection circuit of the vibrator coils.

The device for sorting includes a housing 1 installed by means of elastic slotted springs 2 on the base of the bed 3. A loading device with a hopper 4, the loading device being made in the form of two conical surfaces - a conical case 5 and a smooth conical surface 6. base of the bed 3. In the case under a smooth conical surface, one below the other, there are screening nets 7 of the first fraction and 8 of the second fraction with discharge pipes 9 of the first Second fraction 10, second 11, third fraction .i. The nozzles 9 and 10 are attached to the central parts of the screening nets 7 and 8, respectively, and the nozzle 11 to the peripheral part of the grid 8. The nozzles are made of material, such as tarpaulin. The grids 8 and 7 are attached to the housing by means of the rings 12.

On the outer surface of the body, in its upper part at an angle of 25 ° to it, at equal distances from each other, in the same plane, the causative agents of mechanical oscillations — vibrators 13, consisting of a stator 14 and a core 15 — are fixed; with the possibility of reciprocating motion, the excitation coils 16 are mounted, connected through a frequency converter 17 to a three-phase AC system.

The device for sorting works as follows.

The source material through the feed hopper 4 is fed to a smooth conical surface 6 and distributed to the sieve mesh 7. The mechanical vibration exciters are turned on — vibrators 13 B are a three-phase AC system through the frequency converter 17. Case 1 with sieve grids 7 and 8 and discharge nozzles 9 And it begins to make vertically torsional vibrations, by means of mechanical exciters 13, set at an angle of 25 ° to the body and in the same plane and at equal distances from each other.

When the system is turned on, small and medium particles pass through the peripheral

the grids 7 and fall onto the grid 8, and the coarse fraction moves to the center of the grid 7 and is discharged through the discharge port 9. Particles that have passed through the mesh 8 fall into the discharge port 11, and the middle fraction moves to the center of the mesh 8 and is discharged through the discharge port 10 .

To obtain different grains of the screened material, the vibration frequency is adjusted using a frequency converter 17.

Thus, the proposed sorting device allows to simplify the design and improve the quality of sorting the material.

Claims (3)

1. A sorting device containing a spring-loaded body with screening surfaces located inside it, made in the form of grids, a loading device made in the form of two conical surfaces, vibrators and discharge pipes, characterized in that, in order to improve the quality of sorting and simplify the design , the vibrators are mounted on the housing at an angle to it, and the vibrators are placed in one plane and are located at equal distance from one another along the perimeter enclosures. 2. The device according to claim 1, characterized in that the vibrators are installed at an angle of 25 ° and are equipped with a frequency converter. 3. The device according to claim 1, characterized in that the discharge pipes are placed one another coaxially. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 614832, cl. B 07 B 1/40, 1971. 2. USSR author's certificate No. 354904, cl. B 07 B 1/40, 1969 (prototype). W //////// b / J 1 / f5