RU21360U1 - HYDROCYCLONE - Google Patents

Abstract

A hydrocyclone comprising a housing with a tangential inlet pipe, drain and sand pipes, a cylindrical flotation chamber and flotation product collection chambers, characterized in that it is equipped with a cylindrical glass and a blade rotor installed in the flotation chamber coaxially with the drain pipe.

Description

MKIV04S 5/107

HYDROCYCLONE

The solution relates to devices for separating liquid heterogeneous systems under the action of centrifugal forces and can find application in chemical, oil refining and other industries.

Known hydrocyclone-flotator (author certificate No. 973174, class B02 C 9/00, 1982), containing a cylindrical conical body with a tangential inlet pipe, a drain trough and a slurry pipe, a cylindrical chamber and a floatation device. The disadvantages of this design are the high energy intensity of the electroflotation process and the need for periodic replacement of the cylindrical chamber due to its intense electrochemical corrosion.

Known hydrocyclone (ed. Certificate. No. 789403, class C02 1/28, B04C 5/107, 1981) containing a cylindrical housing with a tangential inlet, Sand and drain pipes, a drain chamber and an axial tube placed in the drain pipe, communicating with the atmosphere . As a result of air injection through the axial tube, the suspension in the drain chamber is aerated. The disadvantage of this design in relation to the flotation process is the lack of structural elements for the separation of flotation products.

Closest to the proposed solution is a hydrocyclone flotator (author certificate No. 715143, class B02 C 1/26, B04 C 9/00 1980) containing a cylindrical housing with inlet and sand pipes, a cylindrical flotation chamber with a funnel for collecting flotation products and an element introducing a water-air mixture in the form of an annular collector with nozzles. The disadvantages of this design is the low efficiency of flotation in

cylindrical flotation chamber due to uneven distribution of bubbles in the cross section of the chamber, and significant inertial ablation of bubbles into the collection chamber of the purified liquid due to swirling of the liquid.

The task at hand is to increase the efficiency of the separation process in the flotation chamber of a hydrocyclone.

The technical result is the conversion of the rotational movement of the aerated suspension into its translational upward movement in the flotation chamber.

This technical result is achieved by the fact that the hydrocyclone, comprising a housing with a tangential inlet, drain and Sand nozzles, a cylindrical flotation chamber and flotation product collection chambers, is equipped with a cylindrical cup and a blade rotor installed in the flotation chamber coaxially with the drain nozzle.

The solution is presented in the figure: FIG. 1 is a general view of the hydrocyclone, and FIG. 2 is a blade rotary expander (enlarged).

The hydrocyclone consists of a cylindrical-conical body 1 with a tangential inlet pipe 2, drain 3 and Peskovy 4 pipes, a cylindrical flotation chamber 5 and flotation product collection chambers 6, 7. On the bottom of the chamber 5, a cup 8 with a blade rotor 9 is installed, made in the form screw blades 10 smoothly straightening along the axis of the glass, fixedly mounted on the central rod 11.

The hydrocyclone works as follows.

The initial suspension enters through the inlet pipe 2 into the housing 1, where it acquires a rotational movement. But by the action of centrifugal forces, large solid particles are separated, which are in the form of condensed

i.

suspensions are discharged from the hydrocyclone through the sand pipe 4. As a result of the swirling of the liquid in the hydrocyclone, an axial discontinuity 12 is formed, into which atmospheric air is injected through the hole of the sand pipe 4. Captured by an ascending stream of a suspension containing small solid particles, the air is carried out with it through the drain pipe 3 into the cavity of the glass 8, where it is intensively dispersed with the formation of a developed bubble structure. Aerated suspension flow, passing through the blade rotator 9, loses spin and enters the cylindrical flotation chamber 5, where flotation of small solid particles by air bubbles occurs. Flotation foam is discharged into chamber 6, and the purified liquid into chamber 7.

Thanks to the installation of a coaxial nozzle with a blade rotor, stabilization of the upward flow of flotation bubbles is ensured, the probability of inertial leakage of bubbles into the collection chamber of purified liquid is reduced, and funnel formation in the foam selection zone is eliminated, which generally leads to an increase in flotation efficiency.

Claims (1)

A hydrocyclone comprising a housing with a tangential inlet pipe, drain and sand pipes, a cylindrical flotation chamber and flotation product collection chambers, characterized in that it is equipped with a cylindrical glass and a blade rotor installed in the flotation chamber coaxially with the drain pipe.