SU1306604A1 - Combined hydrocyclone - Google Patents

Abstract

The invention relates to devices for carrying out hydromechanical processes for the separation of slurry and slurries used in the chemical, mining and processing industry, and improves the separation efficiency of hydraulic mixtures. The combined hydrocyclone contains an external hydrocyclone I with a tangential supply nozzle 2 and nozzle 3 for removal of a large fraction of the solid component of the slurry. Cone-shaped coaxial inserts 7 with longitudinal ribs located on the inner surface of the inserts 7 are concentrically mounted in the internal hydrocyclone 4 with nozzles 5 for withdrawing the fine product and the nozzle 6 for extracting the clarified liquid. The large base of the insert 7 faces the nozzle 3. Element 9 for feeding the slurry into the internal hydrocyclone 4 is installed in its lower part and made of two conical parts connected to each other by large bases. 2 Il. e (L with about 05 O5 about

Description

The invention relates to devices for carrying out hydromechanical separation processes of slurries (suspensions and nulls) and can be used in the chemical, mineral processing industry and a number of other sectors of the national economy.

The purpose of the invention is to increase the efficiency of separation of slurries.

FIG. 1 shows a combined hydrocyclone, a general view; in fig. 2 shows section A-A in FIG. one.

The combined hydrocyclone includes an outer hydrocyclone 1 with a tangential feed nozzle 2 and nozzle 3 for draining a large fraction of the solid slurry component. In the inner cavity of the outer hydrocyclone 1, an inner hydrocyclone 4 is installed with nozzles 5 for withdrawing small product and a drain nozzle 6 for evacuating the clarified liquid from the device. In the inner hydrocyclone 4 there are concentrically mounted conical eos axial inserts 7 with longitudinal ribs 8 placed on the inner surface of the inserts 7 and defined by a gap between them. Cone-shaped eoosny inserts 7 are turned with a large base towards the nozzle 3 of the combined hydrocyclone. In the lower part of the inner hydrocyclone 4, a slurry feed element 9 is installed, made of two conical parts connected with each other by large bases. The adjustment of the combined hydrocyclone operation is carried out using control valves 10 and 11, installed on the pipes 3 and 5, respectively.

Combined hydrocyclone works as follows.

The initial slurry through the tangential feed nozzle 2 enters the outer hydrocyclone 1, twists and, but in the space between the hydrocyclones 1 and 4, moves to the lower part of the apparatus in a descending spiral path. At the same time, the most steep solid particles under the action of m. The centrifugal inertial forces are thrown against the walls of the outer hydrocyclone 1, lowered and removed from the device through the nozzle 3. A part of the slurry containing mostly small solid particles moves along a spiral spiral path. internal hydro cyclone 4, is separated from the main stream and enters the internal cavity of the element 9. In its expanding part, the velocity of the slurry is reduced, and under the action of gravitational forces the particles are removed from element 9, fall into the lower part of the outer hydrocyclone 1 and are removed from the device

through pipe 3. From the upper constricted part of the element 9, where the speed of the slurry is increased to create conditions for even flow distribution in the upper part of the hydrocyclone 4, the slurry enters the zone of placement of the cone-shaped inserts 7. Here the slurry stream is distributed over the gaps between the cone-shaped inserts 7, changes the direction of its movement and moves in the gaps parallel to the walls of the inserts 7. At the same time, the longitudinal ribs 8, exchanged on the inner surface of the cone-shaped inserts 7, prep exist rotational movement of the slurry by converting the rotary motion into movement parallel stenka.m conical inserts 7. When moving slurry in the gap between the conical vstavka.mi 7, its velocity neprerEvno umenschaet- s; the remaining fine solid particles are placed on the outer surface of the cone-shaped inserts 7, where they are formed into a thin wall layer, which, under the influence of gravity, continuously slides off the conical surfaces of the inserts 7 and does not move towards the inner surface of the inner hydraulic cylinder 4. The fine fraction of the solid the slurry component in the form of sediment continuously slips and out through the outlet nozzles 5 from the apparatus. The clarified liquid rises in an upward flow to the upper part of the internal hydrocyclone 4 and is discharged from it through the drain connection 6.

Thus, equipping the combined hydrocyclone with cone-shaped inserts with fins on their internal surfaces allows to increase the efficiency of separation of slurries by performing centrifugal separation and thin-layer settling processes in one device, which reduces the content of solid particles in the clarified liquid.

Claims (1)

Invention Formula Combined hydrocyclone consisting of external and internal hydrocyclones, a tangential supply nozzle, nozzles for removal of coarse and fine fractions of the solid slurry component, a drain nozzle and a feed element The slurry into the internal hydrocyclone, characterized in that, in order to increase the efficiency of the separation of the slurry, it is provided with cone-shaped coaxial inserts with longitudinal ribs on their internal surfaces, concentrically mounted in the internal hydrocyclone and converted to their bases. the pipe for removal of the solid component component by the group, the element for feeding the slurry is made in the form of two conical parts connected to one another with large bases and installed in the lower part of the inner socket rotsiklona. F1lg.1