RU1782669C - Suspension hydraulic-separator - Google Patents

Abstract

Usage: in the technique of purification of circulating water from enrichment plants and wastewater of metallurgical enterprises from fine suspension. SUBSTANCE: in a hydrocyclone containing a pipe for raising sludge arranged coaxially with the conical part of the body, the latter is made of a conically expanding shape and is equipped with nozzles for suctioning the boundary layer. 2 ill.

Description

FIELD OF THE INVENTION This invention relates to a technique for purifying circulating water from enrichment plants and wastewater from metallurgical enterprises from fine suspension.

A hydrocyclone is known in which slurry dewatering is of poor quality.

A slurry hydrocyclone separator is known, comprising a cylinder-conical housing with inlet and outlet nozzles, and in the conical part of the cyclone, a pipe for raising sludge is placed coaxially to the housing, under which a swirl with guide vanes is fixed.

The disadvantage of the hydrocyclone separator (prototype) is its low efficiency due to the fact that the rise of sludge in the non-rotating pipe occurs mainly due to the kinetic energy supplied to the sludge by the swirler, which limits the circulation of the sludge.

The purpose of the invention is to increase the operating efficiency of a separator hydrocyclone.

This goal is achieved in that the hydrocyclone separator suspensions containing a cylindrical conical housing with

the inlet and outlet nozzles, and in the conical part of the cyclone coaxially to the housing with a placed pipe for raising the slurry, under which the swirl with guide vanes is attached, according to the invention, the pipe for raising the slurry is made of a conically expanding shape and is equipped with nozzles for suctioning the boundary layer.

The implementation of the pipe for raising the sludge of a conically expanding shape allows the conversion of kinetic energy into potential and, accordingly, makes it possible to increase the circulated sludge, and supplying this pipe with nozzles for suctioning the boundary layer significantly reduces the hydraulic resistance in this pipe, which increases the efficiency of the hydrocyclone, since it increases accordingly amount of sludge transported up.

On Fig, 1 presents a hydrocyclone separator, top view; figure 2 is a section aa in figure 1.

sl c

h

00

Yu

The hydrocyclone consists of a cylinder-conical housing 1 with a tangential nozzle for supplying a suspension 2 and a clarified water pipe 3. In the lower part, the housing has a slurry nozzle 4 with an opening. A swirler 5 is installed inside the conical part of the casing, having windows b and guide vanes 7. A stationary conically expanding pipe 9 with nozzles for suctioning the boundary layer 10 in this pipe is installed concentrically using the rods 8 with a gap relative to the bottom of the swirl.

The proposed device operates as follows.

The suspension containing the fine suspension is fed into the housing 1 along the tangential pipe 2. When the suspension flow is rotated, the suspension contained in it is pressed against the walls of the hydrocyclone under the action of centrifugal sipes, as a result of which the suspension is thickened and its viscosity increases. The thickened sludge with increased viscosity, rotating by gravity, moves to the hole in the sludge nozzle 4. Part of the sludge, thanks to the blades 7 and the windows b, enters the swirler 5, where kinetic energy is transmitted to it, due to which the sludge enters and rises up through a stationary conically expanding pipe 9. The potential energy necessary for realizing the movement is transmitted to the sludge in the pipe 9 due to the fact that the pipe 9 is shaped like a diffuser, and the hydraulic resistances of which significantly reduce c through nozzles 10 by suctioning the boundary layer in the pipe 9

At

Q Q

0.02 - 0.03

where q is the flow rate of the suction medium through the nozzles 10;

Q is the total flow rate of this medium through the pipe 9, the diffuser resistance is reduced by 30-40%.

Moreover, own losses in the system

suction for these are relatively small.

When suctioning the boundary layer, torn off from the wall of the pipe 9, part of the flow again adheres to the surface, flow

becomes smoother and resistance decreases.

Thus, part of the sludge is returned to the zone of the suspension, which contributes to a more intensive deposition

suspend.

The clarified water through the upper part of the body and the pipe 3 is discharged from the apparatus. The proposed device, in comparison with the prototype, increases the efficiency of the hydrocyclone, since the implementation of the pipe for raising the sludge of a conically expanding form provides the conversion of kinetic energy into potential and, accordingly, makes it possible to increase the circulated sludge, and supplying this pipe with nozzles for suctioning the boundary the bed significantly reduces hydraulic resistance in this pipe and, accordingly, the amount of slurry transported upward increases.

Claims (1)

Claims Hydrocyclone Suspension Separator, comprising a cylindrical conical body with inlet and outlet nozzles, a pipe for raising sludge arranged coaxially with the conical part of the body, under which a swirl with guide trays is mounted, characterized in that, in order to increase work efficiency, the pipe for raising sludge is made of a conically expanding shape and equipped with nozzles for suctioning the boundary layer. fairy / e.J