SU1421418A1 - Hydrocyclone - Google Patents

Abstract

The invention relates to centrifugal type devices for separating and classifying solid particles of granular materials in a liquid medium and can be used in the chemical, ore dressing, food and other industries of the industry, the target product of which is a condensed stream. The purpose of the invention is to ensure the stable operation of a hydrocyclone with a possible change in the flow rate of the initial suspension by maintaining a constant feed rate of the condensed stream. To do this, on the bottom cut of the drain pipe of the clarified flow, rotating under the action of the pressure of the initial suspension, are installed hinged plates with an elastic element placed on them. When changing the flow rate of the original suspension and, accordingly, the intensity of rotation of the drain pipe for. the effect of centrifugal forces on the hinged plates varies, and their opening angle relative to the nozzle axis and, accordingly, the cross-sectional area for the passage of the clarified flow, while the feed rate of the condensed flow discharged from the sand backplane remains constant. 4 il. about ate

Description

The invention relates to centrifugal type devices for separating and classifying solid granular materials in a liquid medium and can be used in the chemical, treating, food and other industries.

The aim of the invention is to ensure the stable operation of the hydrocycle by maintaining a constant capacity of supplying the condensed product discharged through the sand nozzle.

FIG. 1 shows a general hydrocyclone; in fig. 2 - the node I in FIG. 1 i in FIG. 3 is a view A of FIG. 1, at low flow rates; in fig. 4 - the same, with large flow rates,.

The hydrocyclone consists of a cylindro-conical body 1 with a tangential supply nozzle 2, an upper drain nozzle 3 with vanes 4, mounted with the possibility of rotation of the lower sand nozzle 5. The upper drain nozzle 3 is provided with plates 6 hinged inside it at the bottom cut, On which an elastic element 7 can be placed, acting on the plates 6 in the direction of their rotation inwards.

Hydrocyclone works as follows.

The initial suspension enters the hydrocyclone body 1 through a tangential feed inlet 2 under pressure and twists. Under the action of centrifugal forces of inertia, the suspension is divided into a clarified flow, introducing through the nozzle 3, and a condensed stream, discharged through

nozzles 5. The flow of the suspension, acting on the blades 4, the presence of which allows to reduce turbulence and increase the separation efficiency, causes the nozzle 3 to rotate. With an increase in the flow rate of the initial suspension, the rotational speed of the rod 3 increases as well. increasing the area of the flow area of the pipe 3, which reduces its hydraulic resistance. As a result, the productivity of the clarified product increases while maintaining the performance of the condensed product constant. By reducing the flow of the suspension, the paste 6 rotates under its weight or under the action of some elastic element 7 inwards, reducing the flow cross section of the drain nozzle 3. The flow through the nozzle 3 decreases, and the performance of the condensed product, which is the target product, is discharged through the nozzle 5 remains unchanged.

Formula of invention

A hydrocyclone comprising a cylindro-conical case with a tangential supply nozzle, an upper drain nozzle with blades mounted for rotation, and a lower sand nozzle are different. Shch and so that, in order to ensure the stable operation of the hydraulic tilt, the upper drain nozzle is provided with plates with an elastic element placed on them, with the plates being hinged inside the drain nozzle at its lower cut.

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Compiled by Y. Volkov Editor A. Vorovich Tehred M. Didyk Corrector S, Shekmar

Order 4363/8

Circulation 523

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

9U2A

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Claims (1)

Claim A hydrocyclone, including a cylindrical conical housing with a tangential feed pipe, an upper drain pipe with blades mounted for rotation, and a lower sand nozzle, are distinguished. in order to ensure the stable operation of the hydrocyclone, the upper drain pipe is equipped with plates with an elastic element placed on them, and the plates are pivotally fixed inside the drain pipe on its lower cut. to. 4