SU1660742A1 - Hydraulic classifier - Google Patents

Abstract

This invention relates to the hydraulic classification of minerals. The goal is to increase the separation efficiency. Along the axis of the cylindrical body (K) 1, a hollow shaft 4 is rotatably mounted. Radial pipes (TP) 5 are connected to shaft 4 with downwardly directed pipes (R) 6 and additional radial TP9 are connected to the inner space of shaft 4. On TP9, radial plates with a side slit of constant cross section, decreasing in width from the center to the periphery, are installed. Water chambers 12 are located outside of K 1, communicating with the inner space of K 1. Inside K 1, a hollow truncated cone 14 is installed with a smaller base. The hollow cylinder 15 adjoins the smaller base of the truncated cone 14. A baffle 16 is installed above the bottom 2 K 1 radial grooves. Vertical plates 18 are attached to the radial edges of the slots with a gap to the bottom 2 К 1. The upper base of the cone 14 is located at the level of the drain threshold 3. The cone 14 is connected to the shaft 4 and П 6. The lower part of the discharge pipe 11 is mounted with the possibility of vertical displacement 22 with a ring 23. To K 1 is attached a pipe in which a pusher 25 is mounted, attached to the lower part of the stem 22. The inner dia. Of the stem 22 is smaller than the inner dia. Of the tube 11, and the outer diameter of the ring 23 is larger than the inner dia. Of the pipe 11. Pulp It is fed to K1 through shaft 4, TP9 and the gaps between with other plates. The shaft rotates from the actuator 13. Water through P8, water supply device 7 is fed to TP5 and P. 6. Large particles fall into the slots of the partition 16 and accumulate between the plates 18. Water flows from the chambers 12 under the partition 16. Large product siphon devices MI 20 is fed into pipe 19 and is discharged through pipe 11. Rod 22 with ring 23 regulates the discharge of large cells. The subtle upstream stream is carried upwards and unloaded in drainage. 1 ch.p.7 ill.

Description

pipe 11 is mounted for vertical movement of the rod 22 with the ring 23, K K1 is attached to a pipe in which a pusher 25 is mounted attached to the lower part of the rod 22, the inner diameter of the rod 22 is smaller than the inner diameter of the coarse 11, and the outer diameter of the ring 23 is larger than the inner pipe diameter 11 Pulp is fed to K1 through shaft-4, TP9 and gaps between the radial plates. The shaft rotates or drive 13. Water through P8,

water supply device 7 supplies to TP5 and P6. Large particles fall into the slots of the partition 16 and accumulate between the plates 18. From the chambers 12 under the partition 16 water flows. The large product siphon device 20 is fed into the pipes 19 and is discharged through the pipe 11. The rod 22 with the ring 23 controls the unloading of the large class. The thin class is carried upward by the upward flow and collapses into the discharge chute. 1 з, п.ф-л, 7 Il.

The invention relates to the field of the classification of finely divided ores by size and can be used in the beneficiation plants,

The purpose of the invention is to increase the efficiency of separation,

FIG. 1 shows a hydraulic classifier, top view; figure 2 - the same general view; on fig.Z - section aa in figure 2; figure 4 - section bb in figure 2; figure 5 is a section bb In figure 2; FIG. 7 (b) shows a bottom tube with a raised stem; the cut in FIG. 7 is the same, with the stem lowered.

The hydraulic classifier includes a cylindrical body 1 with a bottom 2 and drains with a threshold 3 in its upper part. The axis of the housing 1 is rotatably located in the feces 4. Radial pipes 5 are connected to the downward directional pipe 6 with the hollow shaft 4. Fixture 7 is installed in the upper part of the shaft 4, VLR of the water supply to the radial pipes 5 is fed to the pipe 8. With the internal space of the hollow shaft 4 of the joints, additional radial pipes are made1 9. On additional pipes 9, the radial pl. Of the wires 10 are decreasing in width from the center to the periphery, with the lateral cheek of the constant, enu. In the lower part of the housing 1, there is a device for unloading large-sized j of the product with a rough unloading 11. There are water chambers 12 located outside the housing 1, which are connected with the internal space of the housing 1.

The hollow shaft 4 is connected to the drive 13 rotary / iq. Inside the body 1, a hollow truncated cone 14 is installed with a smaller base. With a large base of a truncated cone 14, we connect the hollow cylinder 15. A bottom 16 with a radial slot 17 is mounted to the bottom 2 of the body 1. Krepts with Gazprom) clearing At the case

vertical plates 18. A device for unloading a heavy product is made in the form of 11 radial pipes connected to the discharge pipe 19

with siphon devices 20. The lower edge of the siphon devices 20 is located below the radial edges of the slots 17. The upper base of the truncated cone 14 is located at the level of the drain

threshold 3. The truncated cone 19 is connected to a hollow shaft 4 and nozzles 6. Along the periphery of the housing 1 in its upper part is located a drainage chute 21. The upper end of the discharge pipe 11 is closed by a partition 16. At the bottom of the discharge pipe 11 is mounted with the possibility of vertical movement rod 22 with a ring 23. A pipe 24 is attached to the body 1. A pusher 25 is mounted with a vertical movement in the pipe 24. A pusher 25 is attached to the lower part of the stem 22. The internal diameter of the stem 22 is smaller than the internal diameter of the discharge bottom pipe 11, and outer diameter of the ring 23 is larger

the inner diameter of the discharge bottom pipe 11. The pipe 24 may be rigidly attached to the discharge chute 26.

Hydraulic classifier works as follows.

The pulp is fed into the hollow shaft 4 and the side slots between the radial plates 10, which are connected to the hollow shaft 4 by means of additional pipelines 9. In this case the slots are variable

hydraulic resistance coefficient, decreasing from the center to the periphery. The change in the coefficient of hydraulic resistance is ensured by decreasing the width of the radial plates 10 from the center to

periphery.

When rotating the hollow shaft 4, and together with

him a truncated cone 14 and additional

pipelines 9 with a radial plate and 10, the pulp is evenly distributed

over the cross section of the housing 1, water enters from the pipe 8 through the device 13 into the pipes 15 and is evenly distributed through the lower ends of the pipes 6 in the pulp layer above the rectangular slots 17. In the area of the lower ends of the pipes 6, local zones of increased upward flow rates are created which carry some of the large grains together with the grains of a given class. Above the radial tube 9, the velocity head decreases, the grains of a given class are removed upward by a common upward flow, and the coarse grains return to the pulp layer above the rectangular slots 17. The coarse grains fall into the rectangular slots 17 into the space between the vertical plates 18 and then liquefied with water coming from water chambers 12. Then the large fraction through siphon devices 20 enters the radial pipes 19 and into the discharge pipe 11. When filling the volume of the washing layer between the partition 16 and the By means of piping 9, the stem 22 is lowered downwards to contact between the pipe 24 and the ring 23. The upper end of the stem 22 is tapered and is always above the level of the radial tubes 19. Due to the diameter of the stem 22. smaller than the internal diameter of the discharge pipe 11, an annular space is formed Section, Vertical movement of the rod 22 eliminates the separation of the pulp in this volume and clogging of the discharge pipe 11. Changing the gap between the ring 23 and the lower edge of the discharge pipe 11 provides a smooth adjustment of sand discharge from the hydr classifier. Thin design classes are brought upward by upward flow.

As the upstream approaches the overflow threshold 3, the cross section of the classifier is reduced due to the truncated cone 14, which leads to an increase in the vertical velocity component. This reduces the loss of the thin class. Nozzles 6 contribute to the additional mixing of the material. The thin product is discharged into the discharge chute 21.

Claims (2)

1. Hydraulic classifier, including a cylindrical body with a bottom and a drain threshold in its upper part, located along the axis of the body with the possibility of rotation of the hollow shaft. radial pipes connected to the shaft with downwardly directed pipes, a device for supplying water to radial pipes, connected to the interior of a hollow shaft additional radial pipes installed on additional pipelines radial plates decreasing from the center of the housing to the periphery of the width with a side slot, a device for unloading a large product with a discharge pipe, water chambers and an actuator located outside the body, characterized in that, in order to increase efficiently During separation, it is provided with a smaller base mounted inside the body with a hollow truncated cone, adjacent to the large base of the truncated cone with a hollow cylinder, mounted over the bottom of the body with a partition with rectangular radial slots and located in slots with a gap to the bottom of the body with vertical plates This device for unloading heavy product is made in the form of radial pipes connected to the discharge pipe with siphon devices, and the upper base of the truncated cone is located at the skimming weir, and a truncated cone connected with the hollow shaft and the branch pipes. 2. Classifier according to claim 1, characterized in that it is provided with a rod installed at the bottom of the discharge pipe with the possibility of vertical movement with a ring, a pipe attached to the body and a pusher installed in the pipe, the rod being attached to the pusher, the internal diameter of the rod is less the inner diameter of the discharge pipe, and the outer diameter of the ring is larger than the inner diameter of the discharge pipe. /. "H ten nineteen 9 FIG L FI.5 Fy FIG. 6 Editor S. Pekar Compiled by V. Meat and N Tehred M. MorgentalKorrektor A.Osaulenko Bb FIG. 7