RU1787566C - Hydraulic cyclone-separator - Google Patents

Abstract

Usage: in the technique of purification of circulation water from enrichment plants and wastewater of metallurgical enterprises from fine suspension. SUBSTANCE: in order to increase operating efficiency, a separator hydrocyclone is provided with a shaft 10 coaxially mounted in a rotatably housing with blades 11 fixed on it in the upper part and swirl 5 with blades 7 in its lower part. A shaft 10 is installed inside the pipe 9 to raise the sludge. Transverse stresses arise around the non-rotating pipe 9, due to which the slurry rises up the pipe 9 in the directions opposite to the centrifugal and gravitational forces, which contributes to a more intensive sedimentation of the suspension. 2 sludge.

Description

y (rig. 2

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.

It is known that the most intense sedimentation of suspended matter in wastewater occurs during the formation of flakes, which is partially facilitated by the partial circulation of chidam.

A hydrocyclone for separating suspensions is known, comprising a cylindrical body with inlet / outlet ports. The disadvantages of this device include the need for sludge circulation, which is associated with additional construction and maintenance costs.

A separator hydrocyclone device is known in which, in order to intensify the separation process by circulating sludge, a pipe for raising sludge is placed in the conical part of the cyclone, under which a swirl with guide vanes is mounted.

However, in the indicated design of the hydrocyclone, when the vertical pipe for raising the sludge is placed in the center of the hydrocyclone and the suspension is fed through the tangential nozzle, only a smaller part of the slag is involved in the circulation movement, and the larger part is carried away with the clarified water from the hydrocyclone. Moreover, the prototype design does not provide an appropriate proportionality between the amount of fine suspension supplied for separation and the size of the circulating slurry.

The purpose of the invention is to increase work efficiency.

This goal is achieved in that the slurry hydrocyclone comprising a cylindrical conical body with inlet and outlet nozzles, in which a pipe for raising sludge is placed in the conical part of the cyclone, under which a swirl with guide vanes is mounted, according to the invention, it is equipped with an installed but its axis is rotatable by a shaft and with blades fixed on it in its upper part, while the swirl is fixed in the lower part of the shaft.

The supply of the hydrocyclone-separator with a shaft mounted on its axis with blades fixed on it in its upper part and in the lower swirler ensures proportionally the return of a part of the sludge to the suspension supply zone, which contributes to a more intensive sedimentation of the suspension.

Comparison of the claimed technical solution with the prototype made it possible to establish compliance with its novelty criterion. In the study of other known technical solutions in the technical field, the features distinguishing the claimed invention from the prototype were not identified and therefore they provide the claimed technical solution that the criterion meets significant differences.

In FIG. 1 shows a hydrocyclone with sludge circulation, in plan; in FIG. 2 is a section AA in FIG. 1.

The hydrocyclone consists of a cylindrical housing 5 with a tangential nozzle for supplying suspensions 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; it has windows 6 and guide vanes 7. A stationary tube 9 is installed concentrically with the help of rods 8 with a gap relative to the bottom of swirl 5;

5 of which the shaft 10 is rotationally arranged along the axis of the hydrocyclone and with the blades 11 mounted on it in its upper part, and the swirler 5 is fixed in the lower part of the shaft 10.

0 The proposed device operates as follows. The suspension containing the finely dispersed mixture under pressure through the tangential pipe for supplying the suspension 2 enters the cylindrical housing 5.

Under the action of centrifugal forces, particles of fine suspension are thrown to the walls of the hydrocyclone, as a result of which the suspension is thickened at the wall and its viscosity increases. The thickened slurry with increased viscosity, rotating under the action of gravity, moves to the hole in the slurry nozzle 4.

At the same time when applying the suspension to

5 housing 1 along the tangential pipe 2, the flow drives the blades 11 and, accordingly, the shaft 10 with the swirler 5 installed on it in the lower part. Part of the sludge coming to the nozzle 4 thanks

To the vanes 7, the windows 6 are fed into the swirl 5 and continues to rotate. Under the action of stresses due to the presence of a velocity gradient resulting from the rotation of a viscous liquid / sludge /

5 around a non-rotating pipe 9, transverse stresses arise in it, due to which the slurry flows inward and rises up the pipe 9 in the directions opposite to centrifugal and gravitational forces.

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

The clarified water through the upper part of the housing 1 and the pipe 3 is discharged from the hydrocyclone.

The proposed device, in comparison with the prototype, increases the efficiency since it provides a proportionate amount of slurry fed into the hydrocyclone to return part of the sludge to the slurry supply zone, which contributes to a more intensive sedimentation of the suspension.

Claims (1)

Formula Invented 0 5 A hydrocyclone separator comprising a cylindrical conical body with inlet and outlet nozzles, in which a pipe for raising sludge is placed coaxially with the conical part of the body, under which a swirl with guide vanes is mounted, characterized in that, in order to increase work efficiency, it is equipped with an installed its axis with a shaft with blades fixed on it in the upper part and with the possibility of rotation, while the swirl is fixed in the lower part of the shaft.