Efficient solid-liquid separation thickener

Abstract

The utility model relates to the field of thickeners, in particular to a high-efficiency solid-liquid separation thickener, which comprises a pool body, a walking frame arranged at the top of the pool body, a motor arranged at the top of the walking frame, a central feeding barrel arranged at the bottom of the walking frame, a stirring rod connected with an output end of the motor, and the other end of the stirring rod penetrating through the central feeding barrel and extending into the pool body. The top end of the central feeding barrel is communicated with a feeding pipe, an inclined plate is annularly arranged on the inner side wall of the pool body, the annular inclined plate for the efficient solid-liquid separation thickener shortens the sedimentation path, and the sedimentation time is reduced by more than 30%; a horizontal pipe nozzle rotates to wash an inclined plate to prevent blockage, and a floating cleaning rod automatically ascends and descends to break foam; slide block linkage, cross-shaped stirring and the guide rod enable functions to be cooperated, so that the problems of slow sedimentation and impurity carrying of bubbles in the prior art are solved, and the separation and purification effects are good.

Description

Technical Field

[0001] This utility model relates to the field of thickener technology, specifically a high-efficiency solid-liquid separation thickener. Background Technology

[0002] Thickeners are widely used in mineral processing plants, primarily for processes requiring solid-liquid separation, such as leachate concentration and wastewater treatment. A thickener is a solid-liquid separation device based on gravity settling, typically constructed from concrete, wood, or welded metal plates into a shallow cylindrical tank with a conical bottom. It can concentrate mineral slurry with a solids content of 10%–20% into an underflow slurry with a solids content of 45%–55% through gravity settling. The thickened underflow slurry is then discharged from the underflow outlet at the bottom of the thickener by the action of a slowly rotating rake installed inside.

[0003] Current thickeners typically employ a top-injection method for slurry, requiring minerals in the slurry to undergo a relatively long settling path from the top to the bottom of the tank to achieve solid-liquid separation. This process presents two major technical bottlenecks: Firstly, the long settling distance leads to low efficiency. Because slurry particles must slowly settle from the top to the bottom of the tank, the long gravity path significantly prolongs the overall settling time, especially for fine-grained minerals or high-viscosity slurries, further limiting the settling speed and making it difficult to meet the demands of efficient continuous production. Secondly, surface bubbles carrying mineral impurities result in poor effluent quality. During slurry injection, the impact easily generates numerous bubbles on the surface. These bubbles adsorb fine mineral particles, flocs, and other impurities, forming a "foam layer." Traditional thickeners lack a targeted bubble treatment mechanism, causing some impurity-laden bubbles to overflow without fully bursting, resulting in increased suspended solids content in the water and incomplete solid-liquid separation. Summary of the Invention

[0004] The main purpose of this invention is to solve the existing technical problems mentioned above and provide a high-efficiency solid-liquid separation thickener.

[0005] The specific solution of this utility model is as follows: a high-efficiency solid-liquid separation thickener includes a tank body, a traveling frame installed on the top of the tank body, a motor installed on the top of the traveling frame, a central feed tank installed at the bottom of the traveling frame, a stirring rod connected to the output end of the motor, the other end of the stirring rod passing through the central feed tank and extending into the tank body, a feed pipe connected to the top of the central feed tank, inclined plates arranged in a ring on the inner side wall of the tank body, the end of the inclined plates away from the tank body tilting downwards; a horizontal pipe connected to the surface of the stirring rod, high-pressure nozzles evenly arranged at the bottom of the horizontal pipe, the high-pressure nozzles being located above the inclined plates for rinsing the minerals deposited on the inclined plates; a guide rod vertically installed at the end of the horizontal pipe, a cleaning rod slidably installed on the guide rod, a floating structure installed at the bottom of the cleaning rod, the floating structure being used to adjust the height of the cleaning rod according to the water level, and the cleaning rod being used to eliminate foam.

[0006] According to the above technical solution, the sedimentation efficiency is improved by using inclined plates to accelerate sedimentation, high-pressure nozzles to rinse the inclined plates to improve sedimentation efficiency, and floating cleaning rods to automatically defoam, thereby enhancing the efficiency and stability of solid-liquid separation.

[0007] Furthermore, the guide rod has limit grooves on both sides, the floating structure includes a slider that is slidably connected to the guide rod, the top of the slider is fixedly connected to the cleaning rod, the inner side wall of the slider is provided with a limit block, the limit block matches and is slidably connected to the limit groove, and the surface of the slider is covered with an airbag.

[0008] According to the above technical solution, the guide rod limiting groove and the slider limiting block cooperate to limit the lateral sway of the cleaning rod and ensure that it slides vertically along the guide rod; the air bag on the surface of the slider drives the cleaning rod to rise and fall automatically with the water level through buoyancy, so that the cleaning rod always keeps in contact with the liquid surface to eliminate foam, thereby realizing the automation and adaptive adjustment of foam treatment.

[0009] Furthermore, the floating structure is provided in two sets, and the sliders in the two floating structures are connected to each other.

[0010] According to the above technical solution, the horizontal stability of the cleaning rod can be enhanced by connecting two sets of floating structures through sliders.

[0011] Furthermore, the stirring rod and the horizontal tube have a cross-shaped structure, and the guide rod has a T-shaped structure with a cylindrical body.

[0012] According to the above technical solution, the T-shaped head is larger than the rod body, forming a mechanical limit when it cooperates with the slider, while the cylindrical rod body reduces the resistance with the water surface.

[0013] Furthermore, the cleaning rod is inclined on both sides in the direction of rotation.

[0014] According to the above technical solution, the inclined surface facing the liquid in the direction of rotation can directly cut into the foam layer, which improves the foam elimination effect.

[0015] Compared with existing technologies, this utility model has the following advantages: This high-efficiency solid-liquid separation thickener shortens the mineral settling path through an annular inclined plate, allowing particles to settle and slide rapidly on the inclined plate surface. Compared with the traditional mode, the settling time is reduced by more than 30%, significantly improving separation efficiency. The horizontal high-pressure nozzle rotates with the stirring roller to rinse the inclined plate, preventing mineral accumulation and blockage, ensuring continuous operation. Furthermore, the floating structure drives the cleaning rod to automatically rise and fall with the water level. Its inclined surface design efficiently breaks up surface foam during rotation, allowing impurities within the foam to settle quickly. Two sets of linked sliders enhance the stability of the cleaning rod, and the cross-shaped stirring and T-shaped guide rod ensure smooth coordination of rinsing and defoaming functions. This solves the technical bottlenecks of slow settling and impurities carried by bubbles in traditional thickeners, achieving high-efficiency solid-liquid separation and water purification. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view of the structure at point A;

[0018] Figure 3 yes Figure 1 Sectional view at BB;

[0019] Figure 4 This is a detailed view of the guide rod and slider of this utility model;

[0020] In the diagram: 1. Pool body; 2. Walking frame; 3. Motor; 4. Central feed hopper; 5. Stirring roller; 6. Feed pipe; 7. Inclined plate; 8. Horizontal pipe; 9. High-pressure nozzle; 10. Guide rod; 11. Cleaning rod; 12. Limiting groove; 13. Sliding block; 14. Limiting block; 15. Airbag. Detailed Implementation

[0021] See Figure 1-4 This embodiment is a high-efficiency solid-liquid separation thickener. It comprises a tank body 1, a traveling frame 2 mounted on top of the tank body 1, a motor 3 mounted on top of the traveling frame 2, and a central feed tank 4 mounted on the bottom of the traveling frame 2. The output end of the motor 3 is connected to a stirring rod 5, the other end of which passes through the central feed tank 4 and extends into the tank body 1. A feed pipe 6 is connected to the top of the central feed tank 4. Inclined plates 7 are arranged in a ring around the inner sidewall of the tank body 1, with the end of the inclined plates 7 away from the tank body 1 tilting downwards. A horizontal pipe 8 is connected to the surface of the stirring rod 5, and high-pressure nozzles 9 are evenly arranged at the bottom of the horizontal pipe 8. The high-pressure nozzles 9 are located above the inclined plates 7 and are used to rinse the precipitated minerals on the inclined plates 7. A guide rod 10 is vertically installed at the end of the horizontal pipe 8, and a cleaning rod 11 is slidably installed on the guide rod 10. A floating structure is installed at the bottom of the cleaning rod 11. The floating structure is used to adjust the height of the cleaning plate according to the water level, and the cleaning rod 11 is used to eliminate foam. Specifically, the material enters the central feed tank 4 through the feed pipe 6. The solid particles in the mixture settle down on the annular inclined plate 7 on the inner wall of the tank 1 due to gravity and finally slide down to the bottom of the tank. The liquid flows upward through the gap of the inclined plate 7, achieving preliminary solid-liquid separation. At the same time, the high-pressure nozzle 9 at the bottom of the horizontal pipe 8, which rotates in conjunction with the stirring roller 5, continuously washes the inclined plate 7 to prevent the accumulation and blockage of sedimented minerals. The cleaning rod 11 on the guide rod 10 at the end of the horizontal pipe 8 adjusts its height according to the water level under the action of the floating structure to eliminate foam on the liquid surface in time, ensuring efficient and stable operation of the solid-liquid separation process.

[0022] Furthermore, limit grooves 12 are provided on both sides of the guide rod 10. The floating structure includes a slider 13 slidably connected to the guide rod 10. The top of the slider 13 is fixedly connected to the cleaning rod 11. A limit block 14 is provided on the inner side wall of the slider 13. The limit block 14 matches and is slidably connected to the limit groove 12. An airbag 15 is covered on the surface of the slider 13. Specifically, the limit grooves 12 on both sides of the guide rod 10 and the limit block 14 on the inner side wall of the slider 13 in the floating structure match each other to form a sliding guide structure, ensuring that the cleaning rod 11 rises and falls stably along the guide rod 10. The top of the slider 13 is fixedly connected to the cleaning rod 11. The airbag 15 covering its surface serves as a floating component and can generate buoyancy according to the water level changes in the pool 1. When the water level rises, the airbag 15 is driven by buoyancy to move the slider 13 and the cleaning rod 11 upward along the limit groove 12. When the water level falls, it moves downward synchronously, thereby realizing that the height of the cleaning rod 11 is automatically adjusted with the water level, ensuring that the cleaning rod 11 is always in a suitable position and eliminating foam on the liquid surface in a timely and effective manner.

[0023] Furthermore, the floating structure is provided in two sets, and the sliders 13 in the two floating structures are connected to each other. Specifically, through the synergistic buoyancy, the stability of the cleaning rod 11 is enhanced when the water level fluctuates, ensuring that it rises and falls smoothly along the guide rod 10 to continuously eliminate foam.

[0024] Furthermore, the stirring rod 5 and the horizontal tube are in a cross shape, and the guide rod 10 is in a T-shape with a cylindrical body. Specifically, the cross shape of the stirring rod 5 and the horizontal tube 8 facilitates the rotation of the stirring rod 5 to drive the horizontal tube 8 and the high-pressure nozzle 9 to make circular motion, so as to evenly rinse the inclined plate 7. The T-shaped cylindrical body of the guide rod 10 provides a stable sliding guide path for the cleaning rod 11, ensuring that it moves smoothly when the water level rises and falls.

[0025] Furthermore, the cleaning rod 11 is inclined on both the upper and lower sides in the direction of rotation. Specifically, the inclined design of the upper and lower sides of the cleaning rod 11 in the direction of rotation can more efficiently break up the foam on the liquid surface through the pushing action of the inclined surface when it rotates with the stirring rod 5, while reducing rotational resistance and improving the defoaming effect and operational stability.

[0026] The working principle of this embodiment is as follows: During use, the material enters the central feed tank 4 through the feed pipe 6, and then is transported to the pool 1. The annular inclined plate 7 inside the pool 1 causes the solid particles in the mixture to settle onto the inclined plate 7 for the first time, while the liquid rises through the gap of the inclined plate 7, completing the initial solid-liquid separation. The horizontal pipe 8 and the bottom high-pressure nozzle 9, which are linked with the stirring roller 5, wash the inclined plate 7 during rotation to prevent the accumulation and blockage of sedimented minerals. The airbag 15 in the floating structure generates buoyancy according to the water level change, which drives the slider 13 to slide along the limiting grooves 12 on both sides of the guide rod 10, realizing the automatic adjustment of the height of the cleaning rod 11. The two sets of interconnected sliders 13 enhance the stability of the cleaning rod 11 when the water level fluctuates, ensuring that it is always in the appropriate position. The cross-shaped structure of the stirring roller 5 and the horizontal pipe 8 facilitates the horizontal pipe to drive the high-pressure nozzle 9 to make a circular motion, realizing the uniform washing of the inclined plate 7. The cylindrical rod body provides a stable sliding path for the cleaning rod 11; the inclined design of the cleaning rod 11 on the upper and lower sides facing the direction of rotation enables it to efficiently push and break up foam when rotating, while reducing rotational resistance, thereby ensuring the efficient and stable operation of the entire solid-liquid separation process.

Claims

1. A high-efficiency solid-liquid separation thickener, comprising a tank body, a traveling frame mounted on the top of the tank body, a motor mounted on the top of the traveling frame, a central feed tank mounted on the bottom of the traveling frame, a stirring rod connected to the output end of the motor, and the other end of the stirring rod penetrating the central feed tank and extending into the tank body, characterized in that: The top of the central feed tank is connected to a feed pipe, and inclined plates are arranged in a ring on the inner side wall of the tank, with the end of the inclined plate away from the tank body tilting downwards. A horizontal pipe is connected to the surface of the stirring rod, and high-pressure nozzles are evenly arranged at the bottom of the horizontal pipe. The high-pressure nozzles are located above the inclined plates and are used to rinse the minerals deposited on the inclined plates. A guide rod is vertically connected to the end of the horizontal pipe, and a cleaning rod is slidably installed on the guide rod. A floating structure is installed at the bottom of the cleaning rod. The floating structure is used to adjust the height of the cleaning rod according to the water level, and the cleaning rod is used to eliminate foam.

2. The high-efficiency solid-liquid separation thickener according to claim 1, characterized in that: The guide rod has limit grooves on both sides. The floating structure includes a slider that is slidably connected to the guide rod. The top of the slider is fixedly connected to the cleaning rod. The inner side wall of the slider is provided with a limit block. The limit block matches the limit groove and is slidably connected. The surface of the slider is covered with an airbag.

3. A high-efficiency solid-liquid separation thickener according to claim 1 or 2, characterized in that: The floating structure is provided in two sets, and the sliders in the two floating structures are connected to each other.

4. A high-efficiency solid-liquid separation thickener according to claim 1 or 2, characterized in that: The stirring rod and the horizontal tube are in a cross shape, and the guide rod is in a T shape with a cylindrical body.

5. The high-efficiency solid-liquid separation thickener according to claim 4, characterized in that: The cleaning rod is inclined on both sides in the direction of rotation.

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