CS243678B1 - Flow Hydrocyclone - Google Patents

Abstract

The solution relates to the field of separation of solid particles in a liquid and solves the problem of the structural arrangement of a flow-through hydrocyclone for a small pressure drop. The flow-through hydrocyclone consists of a tangential inlet /1/, a transition cone /2/, a cylindrical annulus /3/ with hollow distribution blades /4/ and an overflow nozzle /5/, a lower cone /6/ with an outlet nozzle /7/ and a collection chamber /8/ with an overflow /9/. The suspension enters the hydrocyclone through a tangential inlet /1/ through the transition cone /2/, passes through a cylindrical annulus /3/ with hollow distribution blades /4/ and enters the conical part /6/. Part of the suspension with coarser and heavier particles flows through the outlet nozzle /7/ under the influence of centrifugal and gravitational forces, the suspension with fine and light particles flows through the overflow nozzle /5/ with the cavities of the blades /4/ into the collection chamber /8/ with the overflow /9/. The use of a flow-through hydrocyclone is possible, for example, in the filtration devices of washing machines, where a flow-through hydrocyclone can replace classic filter screens.

Description

BACKGROUND OF THE INVENTION The present invention relates to a once-through hydrocyclone which operates at a low pressure drop or at a direct flow without a feed pump.

At present, hydrocyclones are used in particular as separators for separating coal from flue gas, sorters in ore processing plants and thickeners and general use. The slurry to be processed is conveyed to the hydrocyclones mainly by sludge pumps.

The classic hydrocyclone consists of a cylindrical and conical section with inlet, outlet and overflow nozzles. The cylindrical portion passes downwardly into the conical portion. The suspension is blown through the inlet tangential nozzle into the cylindrical portion of the hydroxyclone.

The solid particles under centrifugal forces and gravity direct the conical part into the lower discharge nozzle. The centrifuged liquid proceeds to the center of the hydrocyclones, rises upward and leaves the hydrocyclone through the overflow nozzle through the overflow nozzle.

Conventional hydrocyclones are not suited for the flow of large amounts of suspension at a small pressure drop, or for direct inlet without a sludge pump.

The flow rate of the hydrocyclone according to the invention solves the requirement of flowing a larger amount of suspension even at a small pressure drop. The flow-through hydrocyclone consists of a cylindrical and conical body, in the upper part of which there is an inlet of liquid with solid particles, in the middle part there is an overflow of liquid and in the lower part there is an outlet of solid particles.

The essence of the invention is that the tangential flow is followed by a conical transition and a cylindrical annulus with distributors. hollow blades and overflow nozzle.

The slurry enters the flow hydrocyclones through a tangential inlet at a larger radius, passes through the conical section where Coriolis acceleration increases the peripheral speed and enters the cylindrical annulus with hollow guide vanes, which further increase the peripheral speed.

Under the action of centrifugal force and gravitational force, the coarser and heavier particles are thrown to the circumference and move the elongated cone towards the lower discharge nozzle. The fine and light particles, which are subjected to a smaller centrifugal force, are carried upwardly to the overflow nozzle by an ascending jet and enter through the hollow vanes ₍ collection chamber and hydrocyclone overflow, which is lower than the inlet).

The main advantage of arrangement of hydrocyclones with inlet on larger radius, passing through smaller cylindrical annulus with guide hollow vanes and lower overflow under inlet is that hydrocyclone can work as flow with direct inlet without filling pump

In the accompanying drawing, FIG. 1 is a plan view of the flow hydrocyclones and FIG. 2 is a plan view thereof.

The device according to the invention consists of a tangential inlet 6, a transition cone 2, a cylindrical annulus 6 with hollow guide blades 6 and an overflow nozzle 6, a bottom cone 6 with an outlet nozzle 7 and a collecting chamber 6 with an overflow 6.

The slurry enters the hydrocyclones through a tangential inlet 6 through the transition cone 2, passes through the cylindrical annulus 6 and the guide hollow blades 6 and enters the conical portion 6.

Part of the suspension and the coarser and heavier particles flow through the outlet nozzle X under the influence of centrifugal forces and gravitational forces, the suspension with fine and light particles flows through the overflow nozzle a and the cavities of the blades do into the collecting chamber a and overflow £.

For example, the use of the flow hydroeyclone according to the invention is possible in filtering devices of washing machines, where the flow hydrocyclone can be replaced by conventional filter screens. The advantage of the flow hydroeyclone in this case lies in the saving of labor and spraying water, which are consumed during regular cleaning of conventional screens.

Claims (2)

A flow-through hydrocyclone for separating solid particles in a liquid, consisting of a cylindrical and conical body, in the upper part of which is a liquid inlet with solid particles, in the middle part there is a liquid overflow without solid particles and the tangential inflow (1) is connected to the conical transition (2) and the cylindrical annulus (3) with the guide hollow vanes (4) and the overflow nozzle (5). 2. A hydrocyclone according to claim 1, characterized in that the guide hollow vanes (4) are arranged in a helix and connect the overflow nozzle (5) to the collecting chamber (8) and the overflow (9).