Underflow buffer pipeline for inclined plate thickener

Abstract

The utility model belongs to the technical field of inclined plate thickeners, and particularly relates to an underflow buffer pipeline for an inclined plate thickener, which comprises a discharge pipe at the bottom of the thickener, a reduction gearbox is arranged at the bottom of the discharge pipe, a speed reduction cavity is arranged in the reduction gearbox, the speed reduction cavity is communicated with the discharge pipe through a connecting cavity, a rotating shaft is arranged in the speed reduction cavity, and the connecting cavity is communicated with the discharge pipe. A plurality of material distributing rods are evenly distributed on the outer wall of the rotating shaft in the circumferential direction with the rotating shaft as the circle center, a material conveying cavity is defined by the adjacent material distributing rods and the inner wall of the reduction gearbox, a multi-way pipeline is arranged below the reduction gearbox, and the underflow pump pool is located below the multi-way pipeline. Ore pulp can be conveyed to the discharging port of the reduction gearbox from the feeding port of the reduction gearbox through rotation of the material distribution rod, the ore pulp is prevented from being blocked in the reduction gearbox, the multi-way pipeline is arranged below the reduction gearbox, the flow distribution effect on the ore pulp can be achieved, and impact on the underflow pump pool is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of inclined plate thickeners, in particular to an underflow buffer pipeline for an inclined plate thickener. Background Technique

[0002] At present, some titanium separation plants use fine-grained tailings after flotation as raw materials. After being concentrated by an inclined plate thickener, the slurry with a higher concentration (underflow) flows into the underflow pump sump through the underflow pipeline and is then transported to the subsequent spiral gravity separation process by an underflow pump. Due to the large height difference of the inclined plate thickener, the underflow velocity is fast and the impact force is large, and a large amount of foaming agent is contained in the flotation tailings. The existing underflow pipeline uses a straight pipeline, which will not only accelerate the erosion of the underflow pump sump, but also stir up bubbles and cause cavitation, affecting the pumping force of the underflow pump, greatly reducing the working efficiency of the underflow pump, and may cause the slurry to overflow, resulting in waste of resources.

[0003] CN220877835U discloses an underflow buffer pipeline for an inclined plate thickener, which includes an upper vertical pipeline and a lower bent pipeline. The upper end of the upper vertical pipeline is detachably connected to the conical hopper of the inclined plate thickener, the lower end of the upper vertical pipeline is detachably connected to the upper end of the lower bent pipeline, and the lower end of the lower bent pipeline extends into the underflow pump sump. The underflow buffer pipeline for the inclined plate thickener provided by the utility model can effectively reduce the underflow head, disperse the underflow impact force, reduce the erosion of the underflow pump sump, and at the same time is beneficial to reducing the generation of bubbles in the underflow pump sump, thereby reducing the influence of cavitation on the pumping force of the underflow pump, effectively preventing the underflow slurry from overflowing the underflow pump sump, and prolonging the service life of the underflow pump. However, in this utility model, the ability to slow down the flow rate is limited. If you want to further improve the buffering effect, you need to further increase the bending degree of the lower bent pipeline, but increasing the bending degree of the lower bent pipeline is likely to cause pipeline blockage. Content of the Utility Model

[0004] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides an underflow buffer pipeline for an inclined plate thickener.

[0005] An underflow buffer pipeline for an inclined plate thickener includes a discharge pipe at the bottom of the thickener. A speed reducer is provided at the bottom of the discharge pipe. A speed reduction cavity is provided in the speed reducer. The speed reduction cavity is communicated with the discharge pipe through a connection cavity. A rotating shaft is provided in the speed reduction cavity. A plurality of distributing rods are circumferentially distributed on the outer wall of the rotating shaft with the rotating shaft as the center. An operation cavity is formed by enclosing the adjacent distributing rods and the inner wall of the speed reducer. A multi-pass pipeline is provided below the speed reducer, and an underflow pump sump is located below the multi-pass pipeline.

[0006] Further, a first connection flange is provided at the top of the speed reducer, a second connection flange is provided below the discharge pipeline, and the first connection flange and the second connection flange are connected by bolts.

[0007] Further, one end of the rotating shaft extends out of the speed reducer and is connected to the output end of the driving motor, and the driving motor is fixedly installed on the speed reducer.

[0008] Further, the speed reducer is installed on the thickener through a bracket.

[0009] Further, a butterfly valve is provided at the top of the multi-pass pipeline.

[0010] Further, the multi-pass pipeline includes a feed pipe and a plurality of shunt pipes, and the feed pipe and the shunt pipes are distributed at an angle of 120° - 150°.

[0011] Due to the adoption of the above technical solutions, the beneficial technical effects of the present utility model are as follows: In the present utility model, a speed reducer is provided to effectively slow down the flow rate of the pulp. By controlling the rotation speed of the rotating shaft, the flow rate of the pulp can be effectively controlled, thereby reducing the impact on the underflow pump pool. At the same time, through the rotation of the material distribution rod, the pulp can be conveyed from the feed port of the speed reducer to the discharge port of the speed reducer, preventing the pulp from clogging in the speed reducer. A multi-pass pipeline is provided below the speed reducer, which can play a role in shunting the pulp and further reducing the impact on the underflow pump pool. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of an inclined plate thickener of the present utility model;

[0013] Figure 2 is a schematic structural diagram of an underflow buffer pipeline for an inclined plate thickener of the present utility model;

[0014] Figure 3 is a schematic cross-sectional structural diagram of the underflow buffer pipeline for an inclined plate thickener of the present utility model in the main viewing direction.

[0015] In the figure, 1. thickener, 2. discharge pipe, 3. speed reducer, 4. deceleration cavity, 5. connection cavity, 6. rotating shaft, 7. material distribution rod, 8. material transportation cavity, 9. multi-pass pipeline, 10. first connection flange, 11. second connection flange, 12. driving motor, 13. bracket, 14. butterfly valve. Detailed Embodiment

[0016] In order to more clearly illustrate the technical solutions of the present utility model, the present utility model will be further described below with reference to the drawings. Obviously, the drawings described below are only one embodiment of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments obtained based on this drawing and embodiment all fall within the protection scope of the present utility model.

[0017] According to Figures 1 - 3As shown in the figure, a bottom flow buffer pipeline for an inclined plate thickener 1 includes a discharge pipe 2 at the bottom of the thickener 1. A speed reducer 3 is provided at the bottom of the discharge pipe 2. A speed reduction cavity 4 is provided inside the speed reducer 3. The speed reduction cavity 4 communicates with the discharge pipe 2 through a connection cavity 5. A rotating shaft 6 is provided inside the speed reduction cavity 4. A plurality of distributing rods 7 are circumferentially and evenly distributed on the outer wall of the rotating shaft 6 with the rotating shaft 6 as the center. An operating chamber 8 is enclosed between the adjacent distributing rods 7 and the inner wall of the speed reducer 3. A multi-pass pipeline 9 is provided below the speed reducer 3. The underflow pump sump is located below the multi-pass pipeline 9.

[0018] In the above specific technical solution, the setting of the speed reducer 3 can effectively slow down the flow rate of the pulp. By controlling the rotation speed of the rotating shaft 6, the flow rate of the pulp can be effectively controlled, thereby reducing the impact on the underflow pump sump. At the same time, through the rotation of the distributing rods 7, the pulp can be transported from the inlet of the speed reducer 3 to the outlet of the speed reducer 3, preventing the pulp from clogging in the speed reducer 3. The multi-pass pipeline 9 is provided below the speed reducer 3, which can play a role in diverting the pulp and further reducing the impact on the underflow pump sump.

[0019] A first connection flange 10 is provided at the top of the speed reducer 3. A second connection flange 11 is provided below the discharge pipe 2. The first connection flange 10 and the second connection flange 11 are connected by bolts, which is convenient for the disassembly of the speed reducer 3.

[0020] One end of the rotating shaft 6 extends out of the speed reducer 3 and is connected to the output end of a driving motor 12. The driving motor 12 is fixedly installed on the speed reducer 3.

[0021] The speed reducer 3 is installed on the thickener 1 through a bracket 13.

[0022] A butterfly valve 14 is provided at the top of the multi-pass pipeline 9. Preferably, the speed reducer 3 and the butterfly valve 14 are connected by a flange, which is convenient for the disassembly of the butterfly valve 14. The butterfly valve 14 can control the opening and closing of the buffer pipeline.

[0023] The multi-pass pipeline 9 includes an inlet pipe and a plurality of shunt pipes. The inlet pipe and the shunt pipes are distributed at an angle of 120° - 150°, preventing the pulp from clogging in the shunt pipeline. Preferably, the multi-pass pipeline 9 and the butterfly valve 14 are connected by a flange, which is convenient for the disassembly of the multi-pass pipeline 9.

[0024] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. An underflow buffer pipeline for an inclined plate concentrator, comprising a discharge pipe (2) at the bottom of a concentrator (1), characterized in that: A reduction box (3) is provided at the bottom of the discharge pipe (2), a reduction cavity (4) is provided in the reduction box (3), the reduction cavity (4) is connected with the discharge pipe (2) through a connecting cavity (5), a rotating shaft (6) is provided in the reduction cavity (4), a plurality of distribution rods (7) are evenly distributed on the outer wall of the rotating shaft (6) with the rotating shaft (6) as the center, and the adjacent distribution rods (7) and the inner wall of the reduction box (3) enclose a material transport cavity (8), a multi-channel pipeline (9) is provided below the reduction box (3), and an underflow pump pool is located below the multi-channel pipeline (9).

2. The underflow buffer pipe for an inclined plate concentrator according to claim 1, characterized in that: A first connecting flange (10) is provided on the top of the reduction box (3), and a second connecting flange (11) is provided below the discharge pipe (2), and the first connecting flange (10) and the second connecting flange (11) are connected by bolts.

3. The underflow buffer pipe for an inclined plate concentrator according to claim 2, characterized in that: One end of the rotating shaft (6) extends out of the reduction box (3) and is connected to the output end of the driving motor (12), and the driving motor (12) is fixedly mounted on the reduction box (3).

4. The underflow buffer pipe for an inclined plate concentrator according to claim 3, characterized in that: The reduction box (3) is mounted on the concentrator (1) via a bracket (13).

5. The underflow buffer pipe for an inclined plate concentrator according to claim 4, characterized in that: A butterfly valve (14) is provided at the top of the multi-way pipeline (9).

6. The underflow buffer pipe for an inclined plate concentrator according to claim 5, characterized in that: The multi-channel pipeline (9) comprises a feed pipe and a plurality of branch pipes, and the feed pipe and the branch pipes are distributed at an angle of 120°-150°.

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