Large-torque deep-cone thickener

Abstract

A large-torque deep-cone thickener structurally comprises a deep-cone tank body, a supporting frame, a stirring assembly and a power assembly, the deep-cone tank body is arranged on the ground through the supporting frame, and the deep-cone tank body is divided into an upper half cylindrical tank body part and a lower half conical tank body part; the stirring assembly comprises a rake shaft and a rake frame, the rake frame is arranged at the bottom of the conical tank body and tightly attached to the wall face of the conical tank body, the rake shaft is vertically installed in the center of the rake frame, and the rake shaft is driven by the power assembly to drive the rake frame to stir materials in the deep conical tank body; a discharging barrel is further arranged at the bottom of the deep cone groove body, a bottom bearing is arranged in the discharging barrel, the bottom of the rake shaft is connected with the bottom bearing, the bottom bearing comprises four positioning columns which are arranged in a scattered mode, and the bottom bearing is fixedly installed on the discharging barrel through the positioning columns. According to the utility model, the positioning column is arranged at the bottom bearing, so that the bottom bearing structure is stabilized, and meanwhile, the stable operation of the rake shaft during rotation is ensured. And gaps are formed between the positioning columns, so that discharging is smoother.

Description

Technical Field

[0001] This utility model belongs to the field of thickener technology, specifically relating to a high-torque deep cone thickener. Background Technology

[0002] A thickener is a solid-liquid separation device based on gravity sedimentation. It concentrates low-concentration solid-liquid mixtures into high-concentration slurries through gravity sedimentation. The thickened slurry is then discharged from the bottom of the thickener by the stirring action of rakes inside, thus achieving solid-liquid separation. Deep cone thickeners, with their deep cone-shaped cylinder structure, offer higher concentration efficiency, larger volume, and a relatively smaller footprint, making them more widely applicable in industries such as mining, non-ferrous metal smelting and refining, and papermaking.

[0003] In the large, straight-edged tanks of deep cone thickeners, a bottom bearing is often installed at the bottom of the rake shaft for center positioning to prevent excessive offset during rake operation, which could damage the rake shaft or tank. The magnitude of the radial force generated by the rake shaft's eccentricity is closely related to the thickener's output torque; the greater the torque, the greater the eccentric force. Currently, most bottom bearings on the market are of the bottom-support type. To limit the eccentric oscillation of the rake shaft, the clearance between the bottom bearing and the rake shaft is often quite narrow, meaning that even a slight eccentric oscillation will exert a significant force on the bottom bearing. In actual production, the bottom bearing is subjected to frequent stress, easily leading to wear and even damage, causing significant inconvenience to production and maintenance. Utility Model Content

[0004] In response to the problems mentioned in the background art, this utility model optimizes the support structure of the bottom bearing in a deep cone thickener. The bottom bearing is fixed by the structure of the positioning column, which makes its bottom load capacity higher and the discharge smoother.

[0005] The technical solution adopted by this utility model is as follows:

[0006] A high-torque deep cone thickener, the structure of which includes:

[0007] The deep conical trough, support frame, mixing assembly, and power assembly are provided. The deep conical trough is installed on the ground via the support frame and is divided into an upper cylindrical trough section and a lower conical trough section.

[0008] The mixing assembly includes a rake shaft and a rake frame. The rake frame is located at the bottom of the conical trough and is in close contact with the wall of the conical trough. The rake shaft is vertically installed at the center of the rake frame. The rake shaft drives the rake frame to mix the material in the deep conical trough through the drive of the power assembly.

[0009] The bottom of the deep conical groove is provided with a discharge cylinder, and a bottom bearing is provided inside the discharge cylinder. The bottom of the rake shaft is connected to the bottom bearing. The bottom bearing includes four positioning columns arranged in a dispersed manner. The positioning columns are used to support the bottom bearing and determine the installation position of the bottom bearing in the discharge cylinder. The positioning columns are integrally connected by connecting steel bars.

[0010] The positioning post is also provided with wear-resistant blocks, which are used to reduce the wear on the positioning post.

[0011] The rake shaft is also equipped with a scraper, which is in close contact with the inner wall of the discharge cylinder.

[0012] The power assembly includes a drive unit and a control cabinet. The drive unit is located on top of the rake shaft and is used to drive the rake shaft to rotate.

[0013] The cylindrical tank is equipped with a feeding system, which includes a feeding pipe and a feeding well. The opening of the feeding pipe is located on the side wall of the cylindrical tank.

[0014] The feed well is equipped with a flocculant addition pipe.

[0015] The rake shaft is equipped with a rake mechanism, and the rake mechanism is equipped with a water-dissolving rod.

[0016] The bottom of the conical groove is provided with a circulation pump interface, and the side wall of the discharge cylinder is provided with an underflow pipe, which is connected to the circulation pump interface.

[0017] The bottom of the conical trough is also provided with a slag removal outlet.

[0018] The beneficial effects of this utility model are as follows: The use of positioning pins at the bottom bearing stabilizes the bottom bearing structure and ensures smooth operation of the rake shaft during rotation. Simultaneously, gaps between the positioning pins prevent material blockage when discharged from the discharge cylinder, resulting in smoother discharge. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a high-torque deep cone thickener.

[0020] Figure 2 This is a structural diagram of the discharge cylinder section of a high-torque deep cone thickener.

[0021] Figure 3 This is a top view of the rake frame.

[0022] Figure 4 This is a front view of the bottom bearing.

[0023] Figure 5 This is a top view of the bottom bearing structure.

[0024] Figure 6 This is a schematic diagram of the layering process during the operation of a high-torque deep cone thickener.

[0025] In the diagram: 1. Deep conical trough; 11. Cylindrical trough; 111. Liquid outlet; 12. Conical trough; 121. Circulating pump interface; 122. Slag removal outlet; 13. Discharge cylinder; 131. Underflow pipe; 2. Support frame; 3. Rake shaft; 31. Rake device; 32. Scraper; 33. Connecting rod; 4. Rake frame; 41. Agitator; 5. Feed pipe; 6. Feed well; 61. Flocculant addition pipe; 7. Bottom bearing; 71. Positioning column; 72. Connecting steel bar; 73. Wear-resistant block; 8. Drive device; 9. Control cabinet. Detailed Implementation

[0026] The structure, function, and beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 A high-torque deep cone thickener is disclosed, comprising a deep cone tank 1, a support frame 2, a stirring assembly, and a power assembly. The deep cone tank 1 is mounted on the ground via the support frame 2 and is divided into an upper cylindrical tank 11 and a lower conical tank 12. The cylindrical tank 11 contains a feeding system for feeding and separating the upper clarified liquid. The conical tank 12 contains the main body of the stirring assembly, used to stir the lower settled solid-liquid mixture to achieve solid-liquid separation.

[0028] like Figure 3 The mixing assembly includes a rake shaft 3 and a rake frame 4. The rake frame 4 is located at the bottom of the conical trough 12 and is in close contact with the wall of the conical trough 12. The rake shaft 3 is vertically installed at the center of the rake frame 4. The rake shaft 3 is driven by a power assembly to drive the rake frame to mix the material in the conical trough 1. The rake frame 4 is equipped with several mixing paddles 41, which can make the material mix more thoroughly and evenly, and avoid the material adhering to the rake frame 4 and causing the rake to be pressed down.

[0029] like Figure 1 , Figure 2 The bottom of the deep conical groove is also provided with a discharge cylinder 13, and a bottom bearing 7 is provided inside the discharge cylinder 13. The bottom of the rake shaft 3 is connected to the bottom bearing 7. The bottom bearing 7 is used to support and position the rotating part of the equipment, namely the rake shaft 3, to ensure that the rake shaft 3 can operate smoothly and accurately, and to avoid equipment damage or performance degradation caused by friction, vibration or displacement. The bottom bearing 7 includes a positioning column 71, and the bottom bearing 7 is fixedly installed in the discharge cylinder 13 by the positioning column 71.

[0030] like Figure 4 , Figure 5In this invention, four positioning posts 71 are provided, distributed at the four corners of the bottom bearing 7. The positioning posts 71 are connected as a whole by connecting steel bars 72. This structure can distribute the force on the positioning posts 71 more widely, while the bottom bearing 7 can still bear the radial force from the rake shaft 3 as a whole, thus improving the overall strength of the bottom bearing 7. The positioning posts 71 are also provided with wear-resistant blocks 72 to protect the easily worn parts of the positioning posts 71. The wear-resistant blocks 72 are detachable and replaceable, and can be replaced when the wear-resistant blocks 72 are worn to a certain extent.

[0031] The bottom bearing 7 of this invention employs four positioning pins 71 for four-point positioning. When the rake shaft 3 connected above the bottom bearing 7 becomes eccentric and generates radial force, the radial force is dispersed to the four positioning pins 71 by the four-point positioning structure and cannot act perpendicularly on the positioning pins 71. This reduces the force on each positioning pin 71 and increases the working load of the bottom bearing 7. Furthermore, the gaps between the four positioning pins 71 prevent material from accumulating when discharged from the discharge cylinder 13, resulting in smoother discharge.

[0032] The portion of the rake shaft 3 located in the discharge cylinder 13 is also equipped with a scraper 32, which is integrally connected to the rake shaft 3 via a connecting rod 33. The scraper 32 is in close contact with the inner wall of the discharge cylinder 13. The scraper 32 is used to scrape the material on the inner wall of the discharge cylinder 13 and send it to the underflow pipe 131 on the side wall of the discharge cylinder 13. The bottom of the conical trough 12 is equipped with a circulation pump interface 121, which is connected to the underflow pipe 131. The material scraped out by the scraper 32 returns to the conical trough 12 through the circulation pump interface 121 for further stirring, settling, and discharge. This arrangement reduces material waste and prevents clogging of the discharge cylinder 13.

[0033] The bottom of the conical trough 12 is also provided with a slag removal outlet 122. During the material stirring process in the conical trough 12, large solid particles will be generated. These solid particles are screened out in advance through the slag removal outlet 122, which makes the slurry material finally produced by the discharge port 13 more fine and of higher quality.

[0034] The cylindrical tank 11 is equipped with a feeding system, which includes a feeding pipe 5 and a feeding well 6. The opening of the feeding pipe 5 is located on the side wall of the cylindrical tank 11. The feeding well 6 is equipped with a flocculant addition pipe 61. The material enters the feeding well 6 through the feeding pipe 5 and mixes with the flocculant added from the flocculant addition pipe 61 before entering the deep conical tank 1 to begin settling. The cylindrical tank 11 is equipped with a liquid outlet 111, which is used to discharge the clear water that floats to the surface during the settling process.

[0035] The rake shaft 3 is equipped with a target device 31 for accelerating the solid-liquid separation process of the material, and the target device 31 is equipped with a water-dissolving rod. Through its special design and structure, the water-dissolving rod can effectively guide the water inside the material to the upper layer of the cylindrical tank 11, and further increase the concentration of the material in the lower layer of the cylindrical tank 11 and the conical tank 12, thereby optimizing the overall concentration and sedimentation efficiency.

[0036] The power assembly includes a drive unit 8 and a control cabinet 9. The drive unit 8 is located on top of the rake shaft 3 and is used to drive the rake shaft 3 to rotate. The drive unit 8 includes a motor and a reducer, etc., and can achieve precise drive control of the rotational speed of the rake shaft 3. The control cabinet 9 contains a PLC, which is used to issue real-time control commands to the drive unit 8.

[0037] The following is a detailed description of the workflow of this utility model.

[0038] The solid-liquid mixture to be separated enters the deep conical trough 1 through feed pipe 5 and flows towards feed well 6. Flocculant is added through flocculant addition pipe 61, and under the action of the flocculant, the solid components of the material gradually form flocs. For example... Figure 6 Under the influence of gravity, the material begins to separate into layers. The clear water rises to the upper layer of the cylindrical tank 11, becoming the clarification layer. The gradually concentrated and settling material forms the settling layer at the bottom of the cylindrical tank 11, while the highly concentrated material that settles to the conical tank 12 becomes the compression zone. The target device 31 mounted on the rake shaft 3 accelerates the stratification process of the solid-liquid mixture. The control cabinet 9 controls the drive device 8 to rotate the rake shaft 3, which in turn drives the rake frame 4 to stir the highly concentrated material within the conical tank, resulting in a more uniform distribution of solid particles. After the stratification is complete, the clear water from the clarification layer is discharged from the deep conical tank 1 through the outlet 111, while larger solid particles in the compression zone are screened out through the slag outlet 122 during the stirring process. After stirring, the material forms a highly viscous slurry and is discharged through the discharge cylinder 3. To prevent clogging of the discharge cylinder 3, the scraper 32 installed on the rake shaft 3 will scrape off the material adhering to the wall of the discharge cylinder 3 and transport the part that is difficult to discharge through the underflow pipe 131 to the circulation pump interface 121.

[0039] The above description outlines the structure, specific features, operational process, and advantages of this utility model. It should be noted that the specific implementation of this utility model is not limited to the above-described manner. Any non-substantial improvements made using the technical solution of this utility model, or the direct application of the concept and technical solution of this utility model to other situations without modification, are all within the protection scope of this utility model. The scope of protection claimed by this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-torque deep cone thickener, characterized in that, Its structure includes: The deep conical trough (1), support frame (2), stirring assembly and power assembly are provided. The deep conical trough (1) is installed on the ground by the support frame (2). The deep conical trough (1) is divided into an upper cylindrical trough (11) and a lower conical trough (12). The mixing assembly includes a rake shaft (3) and a rake frame (4). The rake frame (4) is located at the bottom of the conical trough (12) and is close to the wall of the conical trough (12). The rake shaft (3) is vertically installed at the center of the rake frame (4). The rake shaft (3) drives the rake frame (4) to mix the material in the deep conical trough (1) through the drive of the power assembly. The bottom of the deep conical groove (1) is provided with a discharge cylinder (13), and a bottom bearing (7) is provided inside the discharge cylinder (13). The bottom of the rake shaft (3) is connected to the bottom bearing (7). The bottom bearing (7) includes four positioning columns (71) arranged separately. The positioning columns (71) are used to support the bottom bearing (7) and determine the installation position of the bottom bearing (7) in the discharge cylinder (13). The positioning columns (71) are integrally connected by connecting steel bars (72).

2. The high-torque deep cone thickener according to claim 1, characterized in that: The positioning post (71) is also provided with a wear-resistant block (73), which is used to reduce the wear on the positioning post (71).

3. The high-torque deep cone thickener according to claim 1, characterized in that: The rake shaft (3) is also provided with a scraper (32), which is attached to the inner wall of the discharge cylinder (13).

4. A high-torque deep cone thickener according to claim 1, characterized in that: The power assembly includes a drive unit (8) and a control cabinet (9). The drive unit (8) is located on the top of the rake shaft (3) and is used to drive the rake shaft (3) to rotate.

5. A high-torque deep cone thickener according to claim 1, characterized in that: The cylindrical trough (11) is provided with a feeding system, which includes a feeding pipe (5) and a feeding well (6). The opening of the feeding pipe (5) is located on the side wall of the cylindrical trough (11).

6. A high-torque deep cone thickener according to claim 5, characterized in that: The feed well (6) is equipped with a flocculant addition pipe (61).

7. A high-torque deep cone thickener according to claim 1, characterized in that: The rake shaft (3) is equipped with a rake device (31), and the rake device (31) is equipped with a water-dissolving rod.

8. A high-torque deep cone thickener according to claim 1, characterized in that: The bottom of the conical groove (12) is provided with a circulation pump interface (121), and the side wall of the discharge cylinder (13) is provided with an underflow pipe (131), which is connected to the circulation pump interface (121).

9. A high-torque deep cone thickener according to claim 1, characterized in that: The bottom of the conical trough (12) is also provided with a slag removal outlet (122).

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