A bauxite deep-cone high-efficiency settling tank feeding device

Abstract

The utility model relates to bauxite washing technology field, more particularly, relates to a kind of bauxite deep cone high-efficiency settling tank feeding device, including feed pipe, and feed pipe is provided with horizontal pipe section on the settling tank body;Boosting pump is provided on horizontal pipe section;Flow distribution mechanism is set in the center cylinder of settling tank body, and flow distribution mechanism is provided with flow distribution cylinder, and flow distribution cylinder is provided with homogenizing tank, and homogenizing tank is annularly set on the outer circumferential wall of flow distribution cylinder;The circumferential wall of flow distribution cylinder is provided with overflow hole;Horizontal pipe section communicates homogenizing tank, and the cooperation of homogenizing tank and overflow hole makes slurry diffuse and decelerate, avoids the direct impact of high-speed fluid to the liquid level in center cylinder, to greatly weaken the generation of turbulence and vortex.Meanwhile, the design of boosting pump is also helpful to reduce pipeline pressure loss and energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of bauxite washing technology, and more specifically, to a feeding device for a deep cone high-efficiency settling tank for bauxite. Background Technology

[0002] Bauxite washing is a pretreatment process primarily used to remove adhering mud, fine clay, and some soluble impurities from the ore, thereby improving the ore grade (mainly the aluminum-silicon ratio) and subsequent smelting efficiency. The core processes of bauxite washing include crushing, screening, homogenization, ball milling, flotation, settling, and pressure filtration. Currently, the settling process utilizes large-scale vertical flow settling tanks to separate fine clay from the slurry and recover circulating water. Particularly for lower-grade bauxite, the settling process can remove most impurities from the slurry, reducing the dewatering load on the subsequent pressure filtration process.

[0003] Existing radial-flow deep cone settling tanks typically transport slurry via a central feed pipe; traditionally, the central feed pipe is inserted horizontally, vertically, or at an angle into the central cylinder. Driven by a pump, the slurry enters the central cylinder at high velocity and kinetic energy. When the high-speed slurry fluid impacts the liquid surface or cylinder wall within the central cylinder, strong turbulence and vortices are generated. This disturbance propagates upwards and outwards, causing disturbance in the clarification zone and consequently reducing clarification quality. Furthermore, as a non-Newtonian fluid, the slurry is characterized by high viscosity and high solids content. During long-distance pipeline transport, it generates significant frictional resistance against the pipe wall, resulting in pressure energy loss. To overcome this pressure drop and ensure sufficient feed velocity for the slurry reaching the settling tank, higher pumping pressure must be provided at the source. High-pressure transport means the slurry still possesses high kinetic energy at the outlet of the central feed pipe, which in turn exacerbates feed disturbance. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a high-efficiency bauxite deep cone settling trough feeding device, designed to reduce feeding disturbance.

[0005] A bauxite deep cone high-efficiency settling trough feeding device according to an embodiment of the present utility model includes: A feed pipe, wherein a horizontal section is provided on the settling tank body; a booster pump is provided on the horizontal section; A flow distribution mechanism is provided, which is located inside the central cylinder of the settling tank body. The flow distribution mechanism is provided with a flow distribution cylinder, which is provided with a homogenization tank. The homogenization tank is annularly sleeved on the outer peripheral wall of the flow distribution cylinder. An overflow hole is provided on the peripheral wall of the flow distribution cylinder. The horizontal pipe section is connected to the homogenization tank.

[0006] According to some embodiments of this utility model, the axis of the horizontal pipe section and the normal line of the sidewall of the homogenization tank are perpendicular to each other.

[0007] According to some embodiments of the present invention, the overflow hole is a slot, and the length direction of the slot extends in the vertical direction.

[0008] According to some embodiments of the present invention, a baffle plate is provided on one side of the overflow hole, and the baffle plate can restrict the slurry from entering the overflow hole in a spiral direction.

[0009] According to some embodiments of the present invention, the baffle plate is provided with reinforcing ribs.

[0010] According to some embodiments of the present invention, the feed pipe further includes a vertical pipe section, and a check valve is provided between the horizontal pipe section and the vertical pipe section.

[0011] According to some embodiments of the present invention, the distribution mechanism includes a foam cleaning component, wherein the foam cleaning component is provided with a screen in the homogenization tank, and the screen is used to clean foam and impurities on the surface of the slurry.

[0012] According to some embodiments of the present invention, the foam cleaning assembly includes a fixed base, a slider, and a fixed frame. The fixed base is fixedly connected to the side wall of the homogenization tank. The fixed base is provided with a sliding groove in the vertical direction. The slider is slidably installed in the sliding groove. The fixed frame is fixedly connected to the sliding groove. The fixed frame is used to install a mesh cover.

[0013] According to some embodiments of this utility model, a float is fixedly provided at the upper end of the fixed frame.

[0014] According to some embodiments of this utility model, the booster pump is a diaphragm pump.

[0015] A bauxite deep cone high-efficiency settling trough feeding device according to an embodiment of the present utility model has at least the following beneficial effects: According to the present invention, the slurry is transported through a horizontal section of the feed pipe, with a booster pump providing power to overcome pipe resistance. The slurry then enters the distribution cylinder of the distribution mechanism, which has an annular homogenization tank on its outer wall, and the horizontal section is directly connected to the homogenization tank. The slurry undergoes initial distribution and buffering within the homogenization tank, and then overflows evenly and slowly into the central cylinder through overflow holes on the peripheral wall of the distribution cylinder. This process transforms the concentrated high-speed feed of the slurry into multiple low-speed overflows, significantly reducing fluid kinetic energy. The combined use of the homogenization tank and overflow holes allows the slurry to diffuse and decelerate, avoiding direct impact of high-speed fluid on the liquid surface in the central cylinder, thereby greatly reducing the generation of turbulence and vortices. This not only reduces interference in the clarification zone and improves settling quality, but the design of the booster pump also helps reduce pipeline pressure loss and energy consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an assembly structure of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 For the present utility model Figure 2 A magnified schematic diagram of the local structure at point A; Figure 4 This is a schematic diagram of the foam cleaning component of this utility model.

[0017] In the picture: 100 - Feed pipe, 110 - Horizontal pipe section, 120 - Vertical pipe section, 130 - Booster pump, 140 - Check valve; 200-Distribution mechanism, 210-Distribution cylinder, 211-Overflow hole, 212-Baffle plate, 213-Reinforcing rib, 220-Equalization tank, 230-Foam cleaning component, 231-Net cover, 232-Fixed base, 233-Slider, 234-Fixed frame, 235-Float, 236-Groove; 300 - Settling tank body, 310 - Central cylinder. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 4 As shown, this utility model discloses a high-efficiency bauxite deep cone settling tank feeding device, including a feed pipe 100 and a distribution mechanism 200. The feed pipe 100 has a horizontal pipe section 110 on the settling tank body 300; a booster pump 130 is installed on the horizontal pipe section 110; the distribution mechanism 200 is located inside the central cylinder 310 of the settling tank, and includes a distribution cylinder 210. The distribution cylinder 210 has a homogenization tank 220, which is annularly sleeved on the outer peripheral wall of the distribution cylinder 210; an overflow hole 211 is provided on the peripheral wall of the distribution cylinder 210; the horizontal pipe section 110 connects to the homogenization tank 220. Specifically, in this embodiment, the slurry is transported through the horizontal pipe section 110 of the feed pipe 100, and the booster pump 130 provides power to overcome pipe resistance. The slurry then enters the distribution cylinder 210 of the distribution mechanism 200. The outer wall of the distribution cylinder 210 is provided with an annular homogenization tank 220, and the horizontal pipe section 110 is directly connected to the homogenization tank 220. The slurry undergoes initial distribution and buffering within the homogenization tank 220, and then overflows evenly and slowly into the central cylinder 310 through the overflow holes 211 on the peripheral wall of the distribution cylinder 210. This process transforms the concentrated high-speed feed of the slurry into multiple low-speed overflows, significantly reducing the fluid kinetic energy. The combined use of the homogenization tank 220 and the overflow holes 211 allows the slurry to diffuse and decelerate, avoiding direct impact of the high-speed fluid on the liquid surface inside the central cylinder 310, thereby greatly reducing the generation of turbulence and vortices. This not only reduces interference in the clarification zone and improves settling quality, but the design of the booster pump 130 also helps reduce pipeline pressure loss and energy consumption.

[0023] In some embodiments of this invention, the axis of the horizontal pipe section 110 is perpendicular to the normal line of the side wall of the homogenization tank 220. Through this structural design, the slurry forms a swirling flow upon entering the homogenization tank 220. Simultaneously, chemicals can be added to the homogenization tank 220 via a dosing device. Specifically, the axis of the horizontal pipe section 110 is perpendicular to the normal line of the side wall of the homogenization tank 220. This arrangement allows the slurry to naturally form a swirling flow after entering the homogenization tank 220 tangentially. This swirling motion effectively promotes the homogenization of the slurry itself. At the same time, the dosing device can directly add chemicals into the homogenization tank 220, which is in a swirling state, allowing the chemicals to fully mix with the slurry under dynamic conditions. This structural design integrates feeding, mixing, and pre-sedimentation functions. The generation of the swirling flow not only enhances the homogenization effect of the slurry but also ensures more complete contact and reaction between the chemicals and slurry particles, creating superior conditions for the subsequent sedimentation process. This integrated design simultaneously achieves fluid kinetic energy dissipation and efficient reagent dispersion within a single device, significantly improving the efficiency of the entire sedimentation process and the final clarification effect.

[0024] In some embodiments of this utility model, the overflow hole 211 is a slot, with its length extending vertically. Further, a baffle plate 212 is provided on one side of the overflow hole 211, which restricts the slurry from entering the overflow hole 211 in a spiral direction. Further, reinforcing ribs 213 are provided on the baffle plate 212. Specifically, the overflow hole 211 adopts a vertically extending slot shape. This design allows the slurry to obtain a wider and more uniform overflow cross-section in the vertical direction. Further, a baffle plate 212 is provided on one side of each slot, which effectively restricts the slurry from directly flowing into the overflow hole 211 in a spiral direction, thereby converting the tangential swirling flow into a more radially stable overflow. To enhance the structural stability of the baffle plate 212 under slurry flow, reinforcing ribs 213 are also specially provided on its surface. Through this structural design, precise control of the fluid outlet is achieved. The vertical slots provide an ideal outflow distribution, while the baffle 212 forcibly changes the direction of the fluid, effectively suppressing feed short-circuiting and vortex regeneration that may be caused by swirling inertia. The addition of reinforcing ribs 213 ensures the reliability of this flow guiding structure during long-term operation. The three work together to ensure a smooth and uniform transition of the slurry from the distribution cylinder 210 to the settling zone.

[0025] In some embodiments of this utility model, the feed pipe 100 further includes a vertical pipe section 120, and a check valve 140 is provided between the horizontal pipe section 110 and the vertical pipe section 120. Through this structural design, the feed pipe 100 is jointly formed by the horizontal pipe section 110 and the vertical pipe section 120. A check valve 140 is provided at the connection between these two pipe sections. This valve allows the slurry to pass smoothly from top to bottom, but effectively prevents the backflow of the slurry or medium. The slurry is transported through the vertical pipe section 120, passes through the check valve 140, enters the horizontal pipe section 110, and finally enters the homogenization tank 220 under the drive of the booster pump 130. The addition of the check valve 140 brings higher operational reliability to this system. The check valve 140 fundamentally prevents slurry backflow caused by pump shutdown or pressure fluctuations. This not only avoids equipment cavitation and pipeline impact caused by this, but also ensures the stability of the liquid level within the distribution mechanism 200, thus creating a continuous and stable feeding condition for the settling tank. This structure further enhances the safety and stability of the entire feeding device under complex operating conditions.

[0026] In some embodiments of this utility model, the distribution mechanism 200 includes a foam cleaning component 230. The foam cleaning component 230 has a mesh cover 231 installed inside the homogenization tank 220. The mesh cover 231 is used to clean foam and impurities from the surface of the slurry. The distribution mechanism 200 integrates a dedicated foam cleaning component 230. The mesh cover 231 inside the homogenization tank 220 of the foam cleaning component 230 can effectively contact and clean the foam and light impurities generated on the liquid surface during the slurry swirling process. When the slurry forms a swirling flow in the homogenization tank 220, the foam on the surface will be intercepted and captured by the mesh cover 231. The mesh cover 231 can continuously clean the slurry surface without interrupting the settling process or introducing additional disturbance, preventing foam from entering the settling body through the overflow hole 211. This design effectively avoids foam contamination of the subsequent clarification zone, ensures the quality of the overflow liquid, reduces the purification load of subsequent processes, and improves the cleanliness and stability of the entire system operation.

[0027] In some embodiments of this utility model, the foam cleaning assembly 230 includes a fixed base 232, a slider 233, and a fixed frame 234. The fixed base 232 is fixedly connected to the side wall of the homogenization tank 220. The fixed base 232 is provided with a vertical groove 236, and the slider 233 is slidably installed in the groove 236. The fixed frame 234 is fixedly connected to the slider 233. The fixed frame 234 is used to install the mesh cover 231. Further, a float 235 is fixedly provided at the upper end of the fixed frame 234. Specifically, the fixed base 232 is fixedly connected to the side wall of the homogenization tank 220, and the base is provided with a vertical groove. The slider is installed in this groove and can slide vertically. The fixed frame is fixedly connected to the slider, and the mesh cover 231 is installed on this fixed frame. In particular, a float is fixedly provided at the upper end of the fixed frame, and the float can rise and fall with the change of liquid level in the homogenization tank 220. This structural design enables the screen 231 to self-adaptively float. The buoyancy provided by the float allows the entire cleaning assembly to precisely follow liquid level fluctuations, ensuring that the screen 231 is always at the optimal working depth for continuous and efficient foam removal. The cooperation between the slider and the chute ensures smooth vertical movement of the assembly while preventing horizontal swaying. This adaptive characteristic allows the cleaning assembly to effectively cope with liquid level changes caused by feed fluctuations, maintaining stable foam removal capabilities even under complex operating conditions.

[0028] In some embodiments of this utility model, the booster pump 130 is a diaphragm pump. The advantages of using a diaphragm pump in this device are directly reflected in three aspects: stable flow rate, long wear resistance and service life, and high sealing reliability. This perfectly meets the strict requirements of high-pressure transportation conditions of bauxite slurry for the durability, stability and low maintenance cost of pump equipment.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-efficiency bauxite deep cone settling trough feeding device, characterized in that, include: A feed pipe (100) is provided with a horizontal pipe section (110) on the settling tank body (300); a booster pump (130) is provided on the horizontal pipe section (110). A distribution mechanism (200) is provided inside the central cylinder (310) of the settling tank body (300). The distribution mechanism (200) is provided with a distribution cylinder (210), and the distribution cylinder (210) is provided with a homogenization tank (220). The homogenization tank (220) is annularly sleeved on the outer peripheral wall of the distribution cylinder (210). An overflow hole (211) is provided on the peripheral wall of the distribution cylinder (210). The horizontal pipe section (110) is connected to the homogenization tank (220).

2. The bauxite deep cone high-efficiency settling trough feeding device according to claim 1, characterized in that, The axis of the horizontal pipe section (110) and the normal line of the side wall of the homogenization tank (220) are perpendicular to each other.

3. The bauxite deep cone high-efficiency settling trough feeding device according to claim 2, characterized in that, The overflow hole (211) is a slot, and the length of the slot extends in the vertical direction.

4. The bauxite deep cone high-efficiency settling trough feeding device according to claim 3, characterized in that, A baffle plate (212) is provided on one side of the overflow hole (211), which can restrict the slurry from entering the overflow hole (211) in a spiral direction.

5. The bauxite deep cone high-efficiency settling trough feeding device according to claim 4, characterized in that, The baffle (212) is provided with reinforcing ribs (213).

6. The bauxite deep cone high-efficiency settling trough feeding device according to claim 1, characterized in that, The feed pipe (100) also includes a vertical pipe section (120), and a check valve (140) is provided between the horizontal pipe section (110) and the vertical pipe section (120).

7. The bauxite deep cone high-efficiency settling tank feeding device according to claim 1, characterized in that, The distribution mechanism (200) includes a foam cleaning component (230), which has a mesh cover (231) installed in the homogenization tank (220). The mesh cover (231) is used to clean the foam and impurities on the surface of the slurry.

8. The bauxite deep cone high-efficiency settling trough feeding device according to claim 7, characterized in that, The foam cleaning component (230) includes a fixed base (232), a slider (233), and a fixed frame (234). The fixed base (232) is fixedly connected to the side wall of the homogenization tank (220). The fixed base (232) is provided with a groove (236) in the vertical direction. The slider (233) is slidably installed in the groove (236). The fixed frame (234) is fixedly connected to the slider (233). The fixed frame (234) is used to install a mesh cover (231).

9. The bauxite deep cone high-efficiency settling trough feeding device according to claim 8, characterized in that, A float (235) is fixedly installed at the upper end of the fixed frame (234).

10. The bauxite deep cone high-efficiency settling trough feeding device according to claim 1, characterized in that, The booster pump (130) is a diaphragm pump.

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