SU1731295A1 - Separator - Google Patents

Abstract

Usage: separation of grinding products after grinding various solid products using air streams. SUMMARY OF THE INVENTION: The separator comprises an outer and an inner cylinder-conical body mounted coaxially with each other. The cylindrical part of the outer casing is made in the form of a lattice formed by partitions horizontally fastened together. The grate is enclosed by an annular manifold connected to an air supply device. The cylindrical part of the inner housing is made in the form of a lattice and is connected to the nozzle of the light fraction. Above the inner casing, a loading device is installed with the source material flow distributor. The flow distributor is made in the form of a truncated cone with a horizontal ring fixed on the outside of its large base facing down. The cylindrical parts of the outer and inner bodies are located on the same level. The loading device is made with a distribution cylinder mounted above the truncated cone, coaxially with it, with the possibility of vertical movement. cl

Description

The invention relates to a technique for the separation of grinding products after grinding various solid materials and may find application in the building materials industry, chemical, ore dressing and other industries.

The aim of the invention is to improve the classification efficiency by optimizing the aerodynamic regime and the distribution of the source material.

FIG. 1 and 3 shows a schematic diagram of the separator; in fig. 2 shows section A-A in FIG. one.

The separator contains an external cylindrical-conical case 1, in the upper part of which there is a fixture for

loading of the source material, consisting of a hopper 2, a chute 3, at the outlet of which aeration is installed at c 4, a control cylinder 5, the movement of which is provided by a drive 6 located on the lid of the housing 1.

Under the chute 3, a distributor 7 of the flow of the source material is installed in the form of a truncated cone fixed on the discharge pipe 8 with a horizontal ring 9 fixed on the outer side of its larger section, turned-down.

The housing 1 of the separator in the cylindrical part is made in the form of a grid 10 formed horizontally arranged ne-h

with

oh oh

partitions 11, fastened together by bridges 12.

Inside the housing 1 there is a cylindrical conical inner housing 13 with a cylindrical part in the form of a grid 14, mounted coaxially with the outer housing.

The cylindrical parts of the outer and inner bodies are located on the same level. The cylindrical part of the inner body 13 at the bottom and at the top is connected to the cones 15 and 16.

The upper conic part 15 of the inner body 13 is connected to a discharge pipe 8,

The internal volume of the separator between the grids 10 and 14 forms a separation zone 17.

A circular collector 18 for air supply is installed around the cylindrical part of the outer housing 1 over its entire height.

Air is supplied to the manifold 18 through the feed nozzles 19 installed evenly around the perimeter of the manifold. Throttling valves 20 are installed on the pipes 19 to regulate the amount of air supplied to the separator.

The separator works as follows.

The source material is loaded by an elevator or other device into the hopper 2. At the initial moment of loading the hopper, the output section of the leak 3 is blocked by the regulating cylinder 5. After the hopper is loaded to a predetermined level, for example half of the regulating cylinder 5, the actuator 6 is raised to form a gap between the end of the cylinder 5 and a distributor 7 and the aeration of c 4 is included in the work, which contributes to the improvement of material discharge and its even distribution over the surface of the distributor 7.

The size of the gap is established in such a way that the amount of material in the bunker is at a constant level, i.e. synchronization of the material flowing into the bunker and the material flowing from it is ensured.

The presence of the hopper allows the material to be evenly supplied using the distributor 7 to the separation zone 17, and therefore, to ensure the stability of the separation conditions.

In formed between the end of the cylinder 5 and the distributor 7 flow gap over the entire surface of the truncated cone flows into the separation zone 17 of the source material. In the process of material moving along a conical surface, it is pre-divided into fractions — larger particles (grit) under the action of gravity move with greater speed, smaller particles with smaller speed. The stack over the surface of the cone, the material to be separated collides with the horizontal ring 9, which is fixed on the outer side of its larger section, facing downwards, and, changing its direction, flows downward by a converging stream into the separation zone 17. At the same time, large particles of the material are processed closer to the cylindrical parts of the outer casing 1 of the separator, made in the form of a grid 10, and small 5 closer to the inner casing 13.

Simultaneously with the source material in the cylindrical part 10 of the outer casing 1 through the air manifold 18 enters the separation air, which

0 due to the implementation of the cylindrical part 10 in the form of a lattice formed horizontally by partitions 11, fastened together by vertical bridges 12, the transmission zone 17 is directed in the form of parallel horizontal flows penetrating the downward flow of material.

The preliminary classification of the material during its supply to the separation zone 17 and multiple passage through the downward flow of the material of the separation air in the form of horizontal flows contribute to the efficiency of the separation process.

5 By varying the amount of separation air and, accordingly, the flow rate between the outer and inner housings, it is possible to regulate the fineness of the finished product and the efficiency over a wide range.

0 separators.

The finished product from the separation zone 17 (Fig. 3) with air flow through the cylindrical part of the inner body 13, made in the form of a grid 14, and the diverting nozzle 8 is directed to the cleaning system (cyclones and filters). The large particles of the material under the action of gravity are sent to the conical part of the housing 1 and further to the final grinding. Aerodynamic mode

0 separator is provided with an individual exhauster.

Claims (2)

Claim 1. A separator comprising an external cylindrical body with a hole, on the front of which there is an air supply device, an internal cylindrical body with a cylindrical part in the form of a grid, mounted coaxially to the outside, loading devices with the flow distributor and the discharge branch pipe of the coarse fraction, located respectively in the upper and lower conical parts of the outer case, the outlet pipe of the fine fraction, characterized in that, in order to increase separation efficiency by optimizing the aerodynamic regime and distribution of the source material, the cylindrical part of the outer case made in the form of a lattice formed by horizontally spaced partitions fixed between each other by bridges, while the device for feeding into zduha formed as an annular manifold covering adjustment 0 the cylindrical part of the outer casing, and the flow distributor is made in the form of a truncated cone with a horizontal ring fixed on the outer side of its larger base, facing downward, with the cylindrical parts of the outer and inner housings located at the same level. 2. The separator according to claim 1, from l and h and u and the fact that the boot device is made with a distribution cylinder mounted above the truncated cone, coaxially with it, with the possibility of vertical movement to adjust the discharge gap between them. FIG. four AT