SU994056A1 - Centrifugal separator - Google Patents

Description

(54) CENTRIFUGAL SEPARATOR

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The invention relates to devices for separating a mixture of powdered materials and may find application in the chemical, energy and other sectors of the industry.

A centrifugal separator is known, including coaxially mounted bodies with a radial blade apparatus located on the lid of the outer body, an outlet branch pipe adapted for axially mixing to adjust fineness, and a loading device 1.

The disadvantage of such a separator is the low quality of separation and a decrease in its efficiency when moving the outlet nozzle from the optimum average position. Raising the outlet nozzle causes large particles to contaminate the finished product, and lowering increases the content of fine dust in the return.

Also known centrifugal separator, including external and internal cylindrical housings with lids, loading and unloading nozzles of large, intermediate and thin products, twisting device 2.

The disadvantage of this separator is the low separation efficiency.

The purpose of the invention is to increase the separation efficiency by controlling the dispersion of the fine product. 5 The goal is achieved by the fact that the centrifugal separator, which includes external and internal cylindrical-conical bodies with lids, loading and unloading nozzles of large intermediate and thin Q products, a twisting device, is equipped with a flap diaphragm installed at the point of connection of the thin product discharge pipe and the outer case cover ..,

FIG. 1 shows the proposed cent15 robust separator, general view; in fig. 2 shows section A-A in FIG. one..

The centrifugal separator contains coaxially located outer 1 and inner 2 cylindrical bodies with covers 3 and 4, limiting in height

20 is a flat centrifugal separation zone 5. An axial twisting device 6 is placed between the cylindrical parts of the body, the blades of which can simultaneously rotate around their axes when

using the rotary mechanism 7. On the inner surface of the cover 3 at the point of its connection with the discharge pipe of a thin product of the outer case there is a coaxial diaphragm 8 installed coaxially with it, capable of adjusting the input diameter 9 of the discharge pipe of a thin product 10. At the bottom of the case 1 there is a loading pipe 11 for supplying the source material to be separated and the discharge pipe 12 of a large product. The inner casing at the bottom ends with a discharge pipe for the intermediate product.

Centrifugal separator operates as follows.

The material to be separated with the gas flow through the loading nozzle 11 enters the space between the housings 1 and 2, where under the action of gravity and inertia the largest particles are separated and enter the discharge nozzle 12. Leaving the dust, the gas flow is carried to the blade apparatus 6, twists and enters the separation zone 5 formed by caps 3 and 4, where it separates under the action of centrifugal forces. Small particles together with the gas are carried to the pipe 10, the large particles are partially thrown to the inner wall of the outer casing, subjected to repeated separation in a counter flow of gas, partially fall into the annular gap formed by the lid 4 and the housing 2, and then into the pipe 13. Changing With the help of a petal diaphragm 8 of the inlet diameter 9 of the discharge port 10, the coarse adjustment of the maximum particle size in the finished dust (fineness of the finished product) is carried out at a constant flow rate of the dust-gas mixture through the separator. Reducing the diameter of 9 leads to a thinning of dust and vice versa. By turning the blades

The swirling apparatus 6 around its axes changes the twist of the flow in the separation zone 5 and finely adjusts the fineness of the finished dust.

The use of a centrifugal separator will increase the separation efficiency, increase the separation efficiency at the upper and lower limits of the control range by 15-25%.

Claims (2)

1. Lebedev, A. N. Preparation and grinding of fuel at power plants. "Energie, 1969, with. 448-453. 2. USSR author's certificate No. 231699, cl. B 01 D 45/14, 1967 (prototype).