Thickener two-stage rotary mixing drum capable of regulating and controlling self-diluting water quantity

Abstract

The utility model discloses a thickener two-stage rotary mixing drum capable of regulating and controlling self-dilution water quantity, relates to the technical field of thickeners, and aims to overcome the defects of unreasonable pulp dilution concentration, deviation from optimal flocculation dilution concentration and poor process adaptability caused by frequent feeding fluctuation quantity of a traditional thickener. The wide adaptability of the thickener to fluctuation of a conventional process during industrial production practice is improved, so that the production efficiency of the thickener is improved, the agent adding amount is saved, the production cost is reduced, and the requirements of modern industry for efficient and environment-friendly production are met. The device comprises a dense sedimentation tank body, a bridge frame is arranged at the top end of the dense sedimentation tank body, a mixing cylinder, a mixing cylinder slurry distribution cylinder and a rotary mixing and diluting cylinder are installed at the bottom end of the bridge frame, one side of the top end of the rotary mixing and diluting cylinder is connected with the output end of a hydraulic motor, and the hydraulic motor is fixedly installed at the bottom end of the bridge frame. The other side of the top end of the rotary mixing and diluting barrel is connected to the bottom end of the bridge frame through an outer barrel supporting wheel.

Description

Technical Field

[0001] This utility model relates to the technical field of thickeners, specifically a two-stage rotary mixing drum for thickeners with adjustable self-dilution water volume. Background Technology

[0002] Thickeners play a crucial role in solid-liquid separation technology, particularly in the mining and environmental protection industries. While traditional thickeners meet industrial needs to some extent, their design limitations lead to several challenges in practical applications. For example, the non-rotatable outer cylinder restricts precise control of the dilution water volume, affecting the stability and adaptability of the thickening effect. Furthermore, uneven slurry mixing and excessive use of flocculants not only increase production costs but also impose a potential environmental burden. Therefore, developing a novel thickener that achieves precise control of the dilution water volume and uniform slurry mixing through a rotatable outer cylinder and a two-stage rotating mixing cylinder design is of significant importance for improving production efficiency, reducing costs, and mitigating environmental impact. Utility Model Content

[0003] To address the aforementioned problems, specifically those raised in the background section, this invention proposes a two-stage rotary mixing cylinder for a thickener with adjustable self-dilution water volume. The cylinder includes a thickening sedimentation tank, a bridge frame at the top, and a mixing cylinder at the bottom. The mixing cylinder comprises a slurry distribution cylinder and a rotary mixing and dilution cylinder. One side of the top of the rotary mixing and dilution cylinder is connected to the output of a hydraulic motor, which is fixedly mounted at the bottom of the bridge frame. The other side of the top of the rotary mixing and dilution cylinder is connected to the bottom of the bridge frame via an outer cylinder support roller. The sidewall of the rotary mixing and dilution cylinder has several self-dilution channels. A conical distribution plate is mounted at the bottom of the rotary mixing and dilution cylinder via angle steel. A buffer distribution plate is provided on the inner wall of the rotary mixing and dilution cylinder.

[0004] A further feature of this invention is that the top end of the slurry distribution cylinder is fixedly connected to the bottom end of the cable tray by bolts, a feeding pipe is installed at the inlet of the slurry distribution cylinder, a plurality of discharge channels are provided at the bottom end of the slurry distribution cylinder, and one side of the slurry distribution cylinder is connected to the rotating mixing and diluting cylinder by a limiting roller.

[0005] A further feature of this invention is that the rotation angle range of the rotating mixing and dilution cylinder is 0-20°.

[0006] A further feature of this invention is that the bottom of the thickening sedimentation tank is provided with several bottom flow discharge ports, and the top of the side wall of the thickening sedimentation tank is provided with an overflow collection weir.

[0007] A further feature of this invention is that a main drive motor is installed at the top of the bridge frame, the output of the main drive motor is connected to a stirring device via a transmission rod, the stirring device is provided with a plurality of stirring rakes, and the bottom outer wall of the thickening sedimentation tank is provided with a plurality of support legs.

[0008] The beneficial technical effects of this invention are as follows: First, the device demonstrates strong adaptability when facing frequent process fluctuations and numerous uncertainties. By adjusting the position of the self-dilution channel through the rotation of the mixing and dilution cylinder, the self-dilution water volume can be precisely controlled, thereby meeting the dilution requirements of different slurries under various complex operating conditions. This feature enables the equipment to maintain stable operation under different production conditions, greatly improving production reliability and flexibility.

[0009] Secondly, the two-stage mixing design, with the synergistic effect of the slurry distribution cylinder and the rotating mixing and dilution cylinder, ensures more uniform slurry distribution and mixing. This design effectively improves mixing efficiency, laying a solid foundation for the subsequent thickening and settling process. Simultaneously, the conical distribution disc evenly distributes the slurry throughout the thickening and settling tank, ensuring the uniformity and stability of the entire settling process. The buffer distribution disc further buffers and distributes the slurry, promoting thorough mixing between the slurry and dilution water, significantly improving the thickening and settling effect.

[0010] Furthermore, the stirring device driven by the main drive motor agitates the slurry, accelerating the settling of solid particles and greatly improving thickening efficiency. This not only shortens the thickening and settling time but also increases the equipment's processing capacity.

[0011] Furthermore, components such as the outer cylinder support rollers, limit rollers, and support legs collectively ensure the structural stability and reliable operation of the equipment. Even in complex working environments, it ensures safe and stable operation, reducing equipment failures and maintenance costs.

[0012] In practical applications, this device can also save on the amount of flocculant used. Through precise control of dilution water volume and efficient mixing and sedimentation processes, a good thickening effect can be achieved without increasing the amount of flocculant used, reducing production costs and environmental pollution. Attached Figure Description

[0013] Figure 1 A schematic diagram of a thickener structure is shown.

[0014] Figure 2 A schematic diagram of the mixing cylinder structure is shown.

[0015] Figure 3 A top view of the mixing cylinder is shown.

[0016] Figure 4A top view of the slurry distribution cylinder is shown.

[0017] Figure 5 A top view of the rotating mixing and dilution cylinder is shown.

[0018] Attached reference numerals: 1. Feeding pipeline, 2. Slurry distribution cylinder, 3. Rotary mixing and dilution cylinder, 4. Thickening and settling tank, 5. Cable tray, 6. Main drive motor, 7. Support leg, 8. Overflow weir, 9. Bottom flow discharge port, 10. Hydraulic motor, 11. Outer cylinder support roller, 12. Limiting roller, 13. Discharge channel, 14. Self-dilution channel, 15. Angle steel, 16. Conical distribution plate, 17. Stirring device, 18. Buffer distribution plate. Detailed Implementation

[0019] The following is a reference to the appendix. Figure 1-5 The preferred embodiments of this utility model are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0020] This utility model proposes a two-stage rotary mixing cylinder for a thickener with adjustable self-dilution water volume, including a thickening sedimentation tank 4, a bridge frame 5 at the top of the thickening sedimentation tank 4, and a mixing cylinder at the bottom of the bridge frame 5. The mixing cylinder is configured as a two-stage rotary type, with a slurry distribution cylinder 2 as the inner cylinder and a rotary mixing and dilution cylinder 3 as the outer cylinder. The rotary mixing and dilution cylinder 3 rotates to adjust the self-dilution water volume, and the rotation angle range of the rotary mixing and dilution cylinder 3 is 0-20°.

[0021] The mixing cylinder includes a slurry distribution cylinder 2 and a rotary mixing and dilution cylinder 3. The top end of the rotary mixing and dilution cylinder 3 is connected to the output end of a hydraulic motor 10. The hydraulic motor 10 is fixedly installed at the bottom end of the bridge frame 5. The hydraulic motor 10 converts hydraulic energy into mechanical energy and drives the rotary mixing and dilution cylinder 3 to rotate through the output end, providing rotational power to the rotary mixing and dilution cylinder 3 so that it can adjust the position of the self-dilution channel 14, thereby regulating the self-dilution water volume.

[0022] The top of the rotating mixing and dilution cylinder 3 is connected to the bottom of the bridge frame 5 via an outer cylinder support roller 11. The outer cylinder support roller 11 supports the rotating mixing and dilution cylinder 3, reduces frictional resistance when the cylinder rotates, makes the rotation smoother, and assists in supporting the rotating mixing and dilution cylinder 3 to ensure its stable rotation.

[0023] The rotating mixing and dilution cylinder 3 has several self-dilution channels 14 on its side wall. When the rotating mixing and dilution cylinder 3 rotates, the position of the self-dilution channels 14 changes, thereby changing the amount of dilution water entering the mixing cylinder and realizing the regulation of the self-dilution water volume to meet the dilution requirements of different slurries. When viewed from the vertical direction, the highest position of the opening of the self-dilution channel 14 should be lower than the lowest part of the overflow collection weir 8.

[0024] The self-dilution channel 14 and the discharge channel 13 are at the same horizontal level, and the number of self-dilution channels 14 and discharge channels 13 is the same. Each opening of the discharge channel 13 corresponds to the opening position of the self-dilution channel 14. The self-dilution channel 14 extends outward along the tangent direction of the rotating mixing and dilution cylinder 3 for a certain length. The cross-sectional shape of the self-dilution channel 14 includes, but is not limited to, geometric shapes such as rectangle, square, circle, rhombus, trapezoid, or triangle.

[0025] The bottom end of the rotary mixing and dilution cylinder 3 is equipped with a conical distribution plate 16 via angle steel 15. The conical distribution plate 16 distributes the slurry flowing out of the rotary mixing and dilution cylinder 3 evenly in 360 degrees, so that the slurry is more evenly distributed into the thickening and settling tank 4, and the thickening and settling effect is improved.

[0026] The inner wall of the rotary mixing and dilution cylinder 3 is provided with a buffer distribution plate 18. The buffer distribution plate 18 buffers the slurry entering the rotary mixing and dilution cylinder 3 from the slurry distribution cylinder 2, and at the same time distributes the slurry so that the slurry is mixed with the dilution water more evenly.

[0027] The top of the slurry distribution cylinder 2 is bolted to the bottom of the cable tray 5. A feed pipe 1 is installed at the inlet of the slurry distribution cylinder 2, and several discharge channels 13 are provided at the bottom of the slurry distribution cylinder 2. The slurry enters the slurry distribution cylinder 2 through the feed pipe 1 and then is discharged from the discharge channels 13 at the bottom into the rotary mixing and diluting cylinder 3. The slurry distribution cylinder 2 performs preliminary distribution of the slurry, preparing it for subsequent mixing and dilution. One side of the slurry distribution cylinder 2 is connected to the rotary mixing and diluting cylinder 3 through a limiting roller 12. The limiting roller 12 restricts the relative position between the two cylinders, ensuring that the slurry smoothly enters the rotary mixing and diluting cylinder 3 from the slurry distribution cylinder 2, ensuring the stability of the relative position between the two cylinders, and preventing slurry leakage.

[0028] The bottom of the thickening sedimentation tank 4 is provided with several bottom flow discharge ports 9. After thickening sedimentation, the solid particles are deposited to the bottom of the thickening sedimentation tank 4 under the action of gravity and discharged through the bottom flow discharge ports 9.

[0029] An overflow weir 8 is provided on the top of the side wall of the thickening sedimentation tank 4. When the slurry level in the thickening sedimentation tank 4 reaches a certain height, the supernatant flows out through the overflow weir 8. The overflow weir 8 is used to collect the supernatant to achieve solid-liquid separation.

[0030] The top of the bridge frame 5 is equipped with a main drive motor 6. The output of the main drive motor 6 is connected to the stirring device 17 through the transmission rod. The main drive motor 6 converts electrical energy into mechanical energy and drives the stirring device 17 to rotate through the transmission rod, providing power to the stirring device 17 so that the stirring device 17 can stir the slurry in the thickening sedimentation tank 4 and accelerate the sedimentation process.

[0031] The mixing device 17 is equipped with several mixing rakes, which rotate under the drive of the main drive motor 6. The mixing rakes on it mix the slurry, promote the sedimentation of solid particles in the slurry, and improve the thickening effect.

[0032] The bottom outer wall of the thickening sedimentation tank 4 is provided with several support legs 7. The support legs 7 support the thickening sedimentation tank 4 through their own structural strength, providing stable support for the thickening sedimentation tank 4.

[0033] The slurry enters the slurry distribution cylinder 2 through the feed pipe 1. After initial distribution in the distribution cylinder 2, it is discharged from the discharge channel 13 into the rotary mixing and dilution cylinder 3. Simultaneously, dilution water enters the cylinder through the self-dilution channel 14 on the rotary mixing and dilution cylinder 3 and mixes with the slurry. The hydraulic motor 10 drives the rotary mixing and dilution cylinder 3 to rotate, adjusting the relative position of the self-dilution channel 14 and the discharge channel 13. By adjusting the pressure difference between the two channels, the amount of self-dilution water is controlled, maintaining the optimal flocculation concentration of the slurry in the rotary mixing and dilution cylinder 3, improving reagent utilization efficiency, and enhancing sedimentation effect. After being buffered and distributed by the buffer distribution plate 18 in the rotary mixing and dilution cylinder 3, the slurry is thoroughly mixed with the dilution water. The mixed slurry is evenly distributed into the thickening and settling tank 4 through the conical distribution plate 16. The main drive motor 6 drives the stirring device 17 to stir the slurry, accelerating the sedimentation of solid particles. The supernatant flows out through the overflow collection weir 8, and the thickened solid particles are discharged through the underflow discharge port 9.

[0034] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0035] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0038] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A two-stage rotary mixing drum for a thickener with adjustable self-dilution water volume, comprising a thickening sedimentation tank (4), wherein a bridge frame (5) is provided at the top of the thickening sedimentation tank (4), and a mixing drum is installed at the bottom of the bridge frame (5), characterized in that: The mixing cylinder includes a slurry distribution cylinder (2) and a rotary mixing and dilution cylinder (3). One side of the top of the rotary mixing and dilution cylinder (3) is connected to the output end of a hydraulic motor (10). The hydraulic motor (10) is fixedly installed at the bottom of the bridge frame (5). The other side of the top of the rotary mixing and dilution cylinder (3) is connected to the bottom of the bridge frame (5) through an outer cylinder support roller (11). The side wall of the rotary mixing and dilution cylinder (3) is provided with several self-dilution channels (14). The bottom of the rotary mixing and dilution cylinder (3) is equipped with a conical distribution plate (16) through an angle steel (15). The inner wall of the rotary mixing and dilution cylinder (3) is provided with a buffer distribution plate (18).

2. The two-stage rotary mixing drum of a thickener with adjustable self-dilution water volume according to claim 1, characterized in that: The top end of the slurry distribution cylinder (2) is fixedly connected to the bottom end of the bridge frame (5) by bolts. A feeding pipeline (1) is installed at the inlet of the slurry distribution cylinder (2). Several discharge channels (13) are provided at the bottom end of the slurry distribution cylinder (2). One side of the slurry distribution cylinder (2) is connected to the rotating mixing and diluting cylinder (3) through a limiting roller (12).

3. The two-stage rotary mixing drum of a thickener with adjustable self-dilution water volume according to claim 1, characterized in that: The rotation angle range of the rotary mixing and dilution cylinder (3) is 0-20°.

4. The two-stage rotary mixing drum of a thickener with adjustable self-dilution water volume according to claim 1, characterized in that: The bottom of the thickening sedimentation tank (4) is provided with several bottom flow discharge ports (9), and the top of the side wall of the thickening sedimentation tank (4) is provided with an overflow collection weir (8).

5. The two-stage rotary mixing drum of a thickener with adjustable self-dilution water volume according to claim 1, characterized in that: The top of the bridge frame (5) is equipped with a main drive motor (6), and the output of the main drive motor (6) is connected to a stirring device (17) through a transmission rod. The stirring device (17) is equipped with several stirring rakes, and the bottom outer wall of the thickening sedimentation tank (4) is equipped with several support legs (7).

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