Deep-cone thickener with built-in mixing type feeding well

Abstract

The utility model discloses a deep-cone thickener with a built-in mixing type feeding well, which comprises a support frame, a deep-cone thickener main body is fixed at the top of the support frame, a walking frame is fixed at the top of the deep-cone thickener main body, a discharge pipe is fixed at the bottom end of the deep-cone thickener main body, a mixing main shaft is arranged above the discharge pipe, and the mixing main shaft is connected with the deep-cone thickener main body. A stirring paddle is fixed to the outer side of the mixing main shaft, the bottom end of the mixing main shaft is rotationally connected with the walking frame, an output motor is fixed to the top end of the mixing main shaft, the output motor is fixed to the walking frame, and a mixing box is arranged on the outer side of the top end of the mixing main shaft. According to the utility model, a flocculating agent and tailing pulp are added on the collector ring at the same time, so that the flocculating agent and the tailing pulp are mixed when flowing on the collector ring, enter the mixing funnel along with the preliminarily mixed flocculating agent and tailing pulp, and flow along the vortex-shaped drainage plate to form vortex; and the flocculating agent and the tailing pulp are fully mixed in a vortex state.

Description

Technical Field

[0001] This utility model relates to the field of deep cone thickener technology, specifically a deep cone thickener with a built-in mixing feed well. Background Technology

[0002] A deep cone thickener, also known as a deep cone condenser, is a type of thickening equipment. It has a cylindrical upper section and a conical lower section. As the name suggests, its cone is quite deep. The working principle of a deep cone thickener is as follows: with the addition of flocculant, flotation tailings are fed into the feed cylinder with a conical distribution port at the bottom. Most of the water in the coal slurry flows outwards in the clarification zone of the cylindrical section of the thickener, while a small portion forms small eddies in the floc settling zone. In the conical section of the machine, i.e., the compression zone, the sediment is compressed under gravity and discharged from the underflow port or pumped out.

[0003] However, existing deep cone thickeners suffer from insufficient and inefficient mixing of tailings slurry and flocculant in their feed wells, leading to increased settling time. Therefore, they do not meet current requirements. To address this, we propose a deep cone thickener with a built-in mixing feed well. Utility Model Content

[0004] The purpose of this invention is to provide a deep cone thickener with a built-in mixing feed well to solve the problems mentioned in the background art, such as insufficient mixing and low efficiency of the feed well of the deep cone thickener when the tailings slurry and flocculant enter the deep cone thickener, which increases the sedimentation time of the tailings slurry after entering the deep cone thickener.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a deep cone thickener with a built-in mixing feed well, comprising a support frame, a deep cone thickener body fixed to the top of the support frame, a traveling frame fixed to the top of the deep cone thickener body, a discharge pipe fixed to the bottom of the deep cone thickener body, a mixing main shaft above the discharge pipe, an agitator fixed to the outer side of the mixing main shaft, a bottom end of the mixing main shaft rotatably connected to the traveling frame, and an output motor fixed to the top of the mixing main shaft, the output motor being fixed to the traveling frame, a mixing box located on the outer side of the top of the mixing main shaft, the top of the mixing box being fixed to the traveling frame, one side of the mixing box being inserted through and connected to the feed pipe, and multiple flocculant addition pipes being inserted through and fixed to the upper surface of the mixing box, the flocculant addition pipes being distributed in a circular array around the axis of the mixing main shaft.

[0006] Preferably, a manifold ring is fixed inside the mixing box, and the manifold ring is located below the bottom end of the feed pipe.

[0007] Preferably, a partition baffle is fixedly provided on the upper surface of the manifold, and a drainage port is provided on one side of the partition baffle.

[0008] Preferably, a mixing funnel is fixed to the bottom of the manifold, and a diversion plate is fixed to the inner surface of the mixing funnel.

[0009] Preferably, the inner edge of the diversion plate is inclined upward at a 60-degree angle, and the diversion plate is vortex-shaped around the axis of the mixing main shaft.

[0010] Preferably, a flow divider is provided below the mixing chamber. The flow divider is fixed to the outside of the mixing main shaft and has a gap with the mixing chamber. The upper surface of the flow divider is an inclined slope.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention adds flocculant and tailings slurry to the confluence ring simultaneously, allowing them to mix as they flow through the ring. As the initially mixed flocculant and tailings slurry enter the mixing funnel, they flow along the vortex-shaped guide plate to form a vortex, ensuring thorough mixing of the flocculant and tailings slurry in the vortex state. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the mixing box of this utility model;

[0015] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0016] In the diagram: 1. Support frame; 2. Deep cone thickener body; 3. Mixing box; 4. Output motor; 5. Feed pipe; 6. Agitator; 7. Discharge pipe; 8. Flocculant addition pipe; 9. Combustion ring; 10. Drain plate; 11. Diverter plate; 12. Separator baffle; 13. Drain port; 14. Mixing funnel; 15. Mixing spindle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] like Figures 1 to 3As shown, a deep cone thickener with a built-in mixing feed well includes a support frame 1. A deep cone thickener body 2 is fixed to the top of the support frame 1. A traveling frame is fixed to the top of the deep cone thickener body 2. A discharge pipe 7 is fixed to the bottom of the deep cone thickener body 2. A mixing main shaft 15 is located above the discharge pipe 7. An agitator 6 is fixed to the outside of the mixing main shaft 15. The bottom of the mixing main shaft 15 is rotatably connected to the traveling frame, and an output motor 4 is fixed to the top of the mixing main shaft 15. The output motor 4 is fixed to the traveling frame. A mixing box 3 is provided on the outer side of the top of the mixing main shaft 15. The top of the mixing box 3 is fixed to the walking frame. One side of the mixing box 3 is inserted through the feed pipe 5. Multiple flocculant addition pipes 8 are inserted through and fixed on the upper surface of the mixing box 3. The flocculant addition pipes 8 are arranged in a circular array around the axis of the mixing main shaft 15. The mixing main shaft 15 and the stirring paddle 6 are driven to rotate by the output motor 4. The stirring paddle 6 stirs the tailings slurry inside the deep cone thickener body 2, accelerating the flocculation of the tailings slurry.

[0019] A manifold ring 9 is fixed inside the mixing tank 3. The manifold ring 9 is located below the bottom end of the feed pipe 5. A partition baffle 12 is fixed on the upper surface of the manifold ring 9. A flow inlet 13 is provided on one side of the partition baffle 12. The manifold ring 9 is separated by the partition baffle 12, so that the tailings slurry conveyed by the feed pipe 5 needs to flow around once before reaching the flow inlet 13 and entering the mixing funnel 14. During this process, the tailings slurry and the flocculant injected by the flocculant addition pipe 8 are initially mixed.

[0020] A mixing funnel 14 is fixed at the bottom of the confluence ring 9. A guide plate 10 is fixed on the inner surface of the mixing funnel 14. The inner edge of the guide plate 10 is inclined upward at a 60-degree angle. The guide plate 10 is vortex-shaped around the axis of the mixing main shaft 15. The tailings slurry of the mixed flocculant enters the mixing funnel 14 from the inlet 13 and flows along the upper surface of the guide plate 10 to form a vortex. During the flow, the tailings slurry and the flocculant are fully mixed.

[0021] A flow divider plate 11 is provided below the mixing box 3. The flow divider plate 11 is fixed to the outside of the mixing main shaft 15 and there is a gap between it and the mixing box 3. The upper surface of the flow divider plate 11 is an inclined slope. When the tailings slurry that is fully mixed with flocculant flows from the bottom of the mixing funnel 14 onto the surface of the flow divider plate 11, the mixing main shaft 15 drives the flow divider plate 11 to rotate at a constant speed, and the tailings slurry mixed with flocculant that falls on the surface of the flow divider plate 11 is evenly sprayed into the interior of the deep cone thickener body 2, ensuring that the tailings slurry is evenly distributed inside the deep cone thickener body 2.

[0022] Working principle: First, the deep cone thickener is powered on and started. After the power is on, the output motor 4 drives the mixing shaft 15 to rotate. At this time, the mixing shaft 15 drives the agitator 6 and the distributor plate 11 to rotate at a constant speed. Then, the tailings slurry to be treated is conveyed into the mixing tank 3 through the feed pipe 5. The tailings slurry reaches the space between the manifold ring 9 and the mixing tank 3 through the feed pipe 5. At the same time, the flocculant addition pipe 8 conveys the flocculant, so that the flocculant falls into the tailings slurry flowing along the surface of the manifold ring 9. The tailings slurry is initially mixed with the flocculant as it flows from the feed pipe 5 to the inlet 13. The tailings slurry with the initially mixed flocculant is then introduced through the inlet 13. The tailings slurry falls into the mixing funnel 14 through the outlet 13. The tailings slurry flowing into the mixing funnel 14 flows along the upper surface of the vortex-distributed guide plates 10. At this time, the tailings slurry forms a vortex along the inner wall of the mixing funnel 14 because of the guide plates 10. The tailings slurry in the vortex state is fully mixed with the flocculant. The fully mixed tailings slurry falls from the bottom of the mixing funnel 14 onto the surface of the uniformly rotating distribution plate 11. It is evenly sprayed into the deep cone thickener body 2 by the uniformly rotating distribution plate 11, ensuring that the tailings slurry and flocculant are fully mixed and evenly distributed in the deep cone thickener body 2, thereby improving the tailings slurry treatment efficiency and the working efficiency of the deep cone thickener.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deep cone thickener with built-in mixing feedwell shaft, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixed with a deep cone thickener body (2), the top of the deep cone thickener body (2) is fixed with a walking frame, the bottom end of the deep cone thickener body (2) is fixed with a discharge pipe (7), the upper side of the discharge pipe (7) is provided with a mixing main shaft (15), the outer side of the mixing main shaft (15) is fixed with a stirring paddle (6), the bottom end of the mixing main shaft (15) is rotatably connected with the walking frame, and the top end of the mixing main shaft (15) is fixed with an output motor (4), the output motor (4) is fixed with the walking frame, the top end of the mixing main shaft (15) is provided with a mixing box (3), the top of the mixing box (3) is fixed with the walking frame, one side of the mixing box (3) is inserted through a feeding pipe (5), and the upper surface of the mixing box (3) is inserted through and fixed with a plurality of flocculating agent adding pipes (8), the flocculating agent adding pipes (8) are circularly arranged around the axis of the mixing main shaft (15).

2. A deep cone thickener with built-in mixing feedwell according to claim 1, characterized in that: The inner side of the mixing box (3) is fixed with a flow collecting ring (9), and the flow collecting ring (9) is located below the bottom end of the feeding pipe (5).

3. A deep cone thickener with built-in mixing feedwell according to claim 2, characterized in that: The upper surface of the flow collecting ring (9) is fixed with a separation baffle (12), one side of the separation baffle (12) is provided with a flow guide opening (13).

4. A deep cone thickener with built-in mixing feedwell according to claim 3, wherein: The bottom of the flow collecting ring (9) is fixed with a mixing funnel (14), and the inner side surface of the mixing funnel (14) is fixed with a flow guide plate (10).

5. A deep cone thickener with built-in mixing feedwell according to claim 4, wherein: The inner side edge of the flow guide plate (10) is inclined upward at an angle of sixty degrees, and the flow guide plate (10) is in a vortex shape around the axis of the mixing main shaft (15).

6. A deep cone thickener with built-in mixing feedwell according to claim 1, characterized in that: The lower side of the mixing box (3) is provided with a flow distribution plate (11), the flow distribution plate (11) is fixed outside the mixing main shaft (15) and has a gap with the mixing box (3), and the upper surface of the flow distribution plate (11) is an inclined slope.

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