A deep-cone thickener for concentrating mine tailings slurry

Abstract

The application discloses a deep-cone thickener for concentrating mine tailings slurry and relates to the technical field of mine equipment. The top surface of the conical barrel is fixedly connected with a bridge, the top surface of the bridge is fixedly connected with a speed reducer, the output end of the speed reducer is transmissionally connected with a transmission shaft which is coincident with the axis of the conical barrel, the side surface of the transmission shaft is fixedly connected with multiple groups of cross frames, one end of the cross frame close to the inner wall of the conical barrel is fixedly connected with a mounting seat, and the adjacent two mounting seats which are vertically arranged are rotationally installed with a roller between them. In the application, when the transmission shaft drives the rake frame to slowly rotate, the roller which is tangent to the inner wall of the conical barrel makes the rotation of the rake frame more stable, and the concentricity of the rake frame and the transmission shaft is ensured; in addition, the rotation of the roller makes the rotating disc which is rotationally installed in the inner part of the guide plate reciprocatingly rotate through the cam, so that the contact surface between the floc attached to the guide plate and the rotating disc is damaged, and the floc is separated from the two guide plates.

Description

A deep cone thickener for thickening tailings slurry in mines Technical Field

[0001] This invention relates to the field of mining equipment technology, specifically to a deep cone thickener for thickening tailings slurry in mines. Background Technology

[0002] The deep cone thickener is a high-efficiency solid-liquid separation device designed based on the principle of gravity sedimentation. It mainly consists of a deep cone-shaped tank, a feeding mechanism, a slow agitator, and an underflow discharge mechanism. Its main feature is that the depth is greater than the diameter of the top opening, thereby achieving a longer sedimentation process. As the low-concentration slurry to be treated is injected into the tank, the particles settle under the action of gravity. The subsequent settling particles exert "static pressure" on the previously settling particles, squeezing out the water between the particles, which greatly increases the concentration of the underflow. The underflow is then discharged from the bottom to enter the subsequent processing stage. According to the height, the interior of the deep cone thickener is divided into a clarification zone, a sedimentation zone, a transition zone, and a compression zone.

[0003] During the mineral processing process, a large amount of tailings slurry is generated, which not only occupies a lot of tailings pond space but also affects the transportation and purification efficiency of tailings. When existing deep cone thickeners thicken tailings, some types of ore tailings have high viscosity. When particles accumulate between the guide plates, the efficiency of solid-liquid separation is greatly reduced (particles will spread to the surrounding areas due to agitation and the impact of the feed water flow. When particles spread to the clarification zone above, the water in the clarification zone will be polluted, leading to a decrease in mineral processing indicators). At the same time, when these loose deposits fall off and mix into the compression zone, the concentration of the underflow will decrease, forming a thin slurry. This makes the underflow concentration unstable, affecting the output of the underflow and the treatment effect of subsequent processing equipment (for example, when it is introduced into a filter press, due to uneven concentration, some filter cakes will have a higher moisture content than others, which will also increase the filtration time. When filling paste, areas with too low concentration will result in insufficient strength of the filler, reduced compressive strength, and risk of collapse). Summary of the Invention

[0004] The purpose of this invention is to provide a deep cone thickener for thickening tailings slurry in mines, so as to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep cone thickener for thickening mine tailings slurry, comprising a cone, a bridge frame fixedly connected to the top surface of the cone, a reducer fixedly connected to the top surface of the bridge frame, a drive shaft coinciding with the axis of the cone being driven at the output end of the reducer, multiple rake frames fixedly connected to the drive shaft, multiple sets of crossbeams fixedly connected to the side of the drive shaft, and a mounting base fixedly connected to one end of each crossbeam near the inner wall of the cone, with a vertically arranged pair of adjacent mounting bases rotatably mounted between them. Each set of the rollers has a guide plate fixedly connected to it. Multiple rotating disks are rotatably installed inside the guide plate. A cam is fixedly sleeved on the rotating shaft of the roller. The cam is located in the mounting base. A sliding frame is slidably connected inside the mounting base. The sliding frame abuts against the side of the cam. A horizontal sliding column is slidably connected inside the cross frame. The adjacent end of the horizontal sliding column is fixedly connected to the sliding frame. A vertical sliding column is slidably connected inside the guide plate. When the horizontal sliding column moves towards the drive shaft, the vertical sliding column slides downward and drives the rotating disk to rotate.

[0006] Preferably, a roller is movably sleeved on the side of the horizontal slide column, and a lower pressure block is fixedly connected to the side of the vertical slide column near the horizontal slide column. The side of the lower pressure block adjacent to the horizontal slide column is provided with an inclined groove. When the horizontal slide column moves linearly, the roller drives the lower pressure block to move vertically. A spring is fixedly connected to the end of the horizontal slide column facing the drive shaft.

[0007] Preferably, the rotating disk has an inner groove on its circumferential side, and the side of the vertical sliding column is connected to the inside of the inner groove with meshing tooth blocks. When the vertical sliding column moves in the vertical direction, it drives the rotating disk to rotate.

[0008] Preferably, the adjacent vertical sliding columns are located on different sides of the rotating disk, so that the rotation directions of the adjacent rotating disks are opposite.

[0009] Preferably, the roller abuts against the inner side of the cone, and the roller is located within the settling zone and transition zone of the cone.

[0010] Preferably, a return spring is fixedly connected to the bottom end of the vertical sliding column, and the return spring drives the vertical sliding column to slide upward after being released.

[0011] Preferably, the cam has symmetrical protruding sections, and when the sliding frame contacts the protruding sections, it drives the horizontal sliding column to slide in the direction of the transmission shaft.

[0012] Preferably, a feed hopper is fixedly connected to the bottom surface of the cable tray, and a liquid injection pipe is connected around the bottom of the feed hopper. A dispersion device is installed inside the feed hopper.

[0013] Preferably, a discharge cone is provided at the bottom of the cone barrel, the discharge cone is connected to the underflow discharge device, and multiple scraper blades are fixedly connected to the bottom end of the rake frame.

[0014] Preferably, a step ladder is fixedly provided on the outer side of the cone, and the top of the step ladder is connected to the cable tray.

[0015] The beneficial effects of this invention are as follows:

[0016] In this invention, the rollers, tangent to the inner wall of the cone, stabilize the rotation of the rake frame as the drive shaft drives it to rotate slowly, ensuring the concentricity of the rake frame and the drive shaft, as well as the perpendicularity of the drive shaft. Furthermore, the rotation of the rollers causes the rotating disk inside the guide plate to reciprocate via a cam, thereby disrupting the contact surface between the flocs attached to the guide plate and the rotating disk, allowing the flocs to detach from between the two guide plates and ensuring the flow between them. By rotating the rotating disks at the same height on adjacent guide plates in opposite directions, the disruptive effect of the rotating disks on the contact surface with the flocs is enhanced, further ensuring the floc separation effect. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic cross-sectional view of the conical barrel structure of the present invention;

[0019] Figure 3 is a schematic diagram of the transmission shaft and rake frame structure of the present invention;

[0020] Figure 4 is an enlarged view of point A in Figure 3 of this invention;

[0021] Figure 5 is a schematic diagram of the horizontal sliding rod, vertical sliding column and rotating disk structure of the present invention;

[0022] Figure 6 is a schematic diagram of the cam structure of the present invention.

[0023] In the diagram: 1. Cone; 11. Discharge cone; 12. Step ladder; 2. Bridge frame; 21. Reducer; 3. Feed hopper; 4. Drive shaft; 5. Rake frame; 51. Scraper; 6. Horizontal frame; 61. Horizontal slide column; 62. Roller; 7. Roller; 71. Mounting base; 72. Cam; 721. Outer protrusion section; 73. Sliding frame; 8. Guide plate; 81. Rotary disk; 811. Inner groove; 82. Vertical slide column; 821. Tooth block; 83. Lower pressure block; 831. Inclined groove; 84. Return spring. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] As shown in Figures 1 to 6, an embodiment of the present invention provides a deep cone thickener for thickening mine tailings slurry, comprising a cone 1, a bridge frame 2 fixedly connected to the top surface of the cone 1, a reducer 21 fixedly connected to the top surface of the bridge frame 2, a drive shaft 4 coinciding with the axis of the cone 1 being driven at the output end of the reducer 21, multiple rake frames 5 fixedly connected to the drive shaft 4, and multiple sets of cross frames 6 fixedly connected to the side of the drive shaft 4. A mounting base 71 is fixedly connected to one end of the cross frame 6 near the inner wall of the cone 1, and rollers 7 are rotatably mounted between two adjacent mounting bases 71 arranged vertically. Each of the crossbeams 6 is fixedly connected to a guide plate 8. Multiple rotating disks 81 are rotatably installed inside the guide plate 8. A cam 72 is fixedly sleeved on the rotating shaft of the roller 7. The cam 72 is located inside the mounting base 71. A sliding frame 73 is slidably connected inside the mounting base 71. The sliding frame 73 abuts against the side of the cam 72. A horizontal sliding column 61 is slidably connected inside the crossbeam 6. The adjacent ends of the horizontal sliding column 61 and the sliding frame 73 are fixedly connected. A vertical sliding column 82 is slidably connected inside the guide plate 8. When the horizontal sliding column 61 moves toward the drive shaft 4, the vertical sliding column 82 slides downward and drives the rotating disk 81 to rotate.

[0026] In this invention, the rollers 7, which are tangent to the inner wall of the cone barrel 1, make the rotation of the rake frame 5 more stable when the drive shaft 4 drives the rake frame 5 to rotate slowly, ensuring the concentricity of the rake frame 5 and the drive shaft 4, as well as the perpendicularity of the drive shaft 4. Secondly, the rotation of the rollers 7 causes the rotating disk 81, which is rotated inside the guide plate 8, to reciprocate through the cam 72, thereby destroying the contact surface between the flocs attached to the guide plate 8 and the rotating disk 81, causing the flocs to detach from between the two guide plates 8, ensuring the flow between the guide plates 8. Furthermore, by making the rotating disks 81 of the same height on adjacent guide plates 8 rotate in opposite directions, the destructive effect of the rotating disk 81 on the contact surface with the flocs is enhanced, further ensuring the separation effect of the flocs.

[0027] Meanwhile, the sliding frame 73, horizontal sliding column 61, and vertical sliding column 82 in this invention are respectively disposed inside the mounting base 71, the cross frame 6, and the guide plate 8, forming an isolation state with the external particles, thereby preventing the particles from wearing down the sliding frame 73, horizontal sliding column 61, and vertical sliding column 82, and improving the service life of the relevant structures.

[0028] In this embodiment, a roller 62 is movably sleeved on the side of the horizontal slide column 61, and a lower pressure block 83 is fixedly connected to the side of the vertical slide column 82 near the horizontal slide column 61. The side of the lower pressure block 83 adjacent to the horizontal slide column 61 is provided with an inclined groove 831. When the horizontal slide column 61 moves in a straight line, the roller 62 drives the lower pressure block 83 to move in the vertical direction. A spring is fixedly connected to one end of the horizontal slide column 61 facing the drive shaft 4, and the other end of the spring abuts against the side of the inner groove of the cross frame 6, so that when the spring rebounds, it drives the horizontal slide column 61 to move in the opposite direction to return.

[0029] As shown in Figures 3 to 5, as the cam 72 rotates, it pushes the sliding frame 73 to move. The horizontal slide column 61 moves synchronously with the sliding frame 73. When the sliding frame 73 is driven by the cam 72 to slide the horizontal slide column 61 towards the drive shaft 4, the roller 62 rolls within the cross frame 6. When the roller 62 enters the inclined groove 831, it continues to roll, driving the lower pressure block 83 to move downward, thereby driving the vertical slide column 82 to move downward. At this time, the rotating disk 8 corresponding to the vertical slide column 82... 1 is driven to rotate, and by using roller 62 to drive the lower pressure block 83 to move downward, the total contact area between roller 62 and lower pressure block 83 can be reduced, thereby reducing the probability of friction damage. In addition, by using roller 62 to roll in the cross frame 6, it can also prevent the horizontal slide column 61 from sliding to both sides when sliding in the cross frame 6, ensuring the stability of the horizontal slide column 61 during the sliding process, so that roller 62 can accurately enter the inclined groove 831, and prevent the end of roller 62 from colliding with the lower pressure block 83 and being damaged.

[0030] The inclined groove 831, which drives the pressing block 83 to move downward, is limited to the groove shape shown in the figure, which is formed on the side of the pressing block 83. The inner side of the inclined groove 831 can also be connected to the top surface of the pressing block 83 (that is, the pressing block 83 forms an "L" shape), so as to adapt to pressing parts of different shapes.

[0031] In this embodiment, the circumferential side of the rotating disk 81 is provided with an inner groove 811, and the side of the vertical sliding column 82 is connected to the inside of the inner groove 811 with meshing tooth blocks 821. When the vertical sliding column 82 moves in the vertical direction, it drives the rotating disk 81 to rotate. Adjacent vertical sliding columns 82 are located on different sides of the rotating disk 81, so that the rotation directions of adjacent rotating disks 81 are opposite.

[0032] As shown in Figures 3 to 5, the position of the vertical sliding column 82 determines the direction in which it drives the rotating disk 81 to rotate. When the two vertical sliding columns 82 in the figure slide downwards, the vertical sliding column 82 closer to the mounting base 71 will drive its corresponding rotating disk 81 to rotate clockwise, while the vertical sliding column 82 farther from the mounting base 71 will drive its corresponding rotating disk 81 to rotate counterclockwise. Since the two adjacent rotating disks 81 rotate in opposite directions, when there are adhering flocs between the two guide plates 8, the adjacent rotating disks 81 rotate in different directions, breaking the contact surface between the flocs and the guide plates 8 and the rotating disks 81. Under the impact of the feed water flow and the rotation of the rake frame 5, the flocs are detached from the guide plates 8, preventing the flocs from adhering to the guide plates 8 and corroding them. At the same time, the cleaning frequency of the guide plates 8 is reduced, allowing the equipment to operate continuously for a longer period of time.

[0033] In this embodiment, the roller 7 abuts against the inner side of the cone 1, and the roller 7 is located in the settling zone and transition zone inside the cone 1.

[0034] As shown in Figures 2 and 3, the crossbeam 6 is located directly above the rake frame 5.

[0035] Normally, during normal operation, the feed water flow needs to be kept at a low velocity. Under the mechanical thrust of the rake frame 5 and the structural guidance of the cone section, the particles will converge towards the central discharge cone 11. However, when the feed water flow increases or the rotation speed of the rake frame 5 increases, the particles are more likely to converge towards the inner side of the cone 1 under the mechanical thrust of the feed water flow and the rake frame 5. At this time, particles and flocs are very likely to quickly "short-circuit" upwards or laterally along the barrel wall and enter the upper clarification zone. Without sufficient settling, they are mixed into the overflow. However, through the roller 7, during normal operation, the roller 7 rolls on the inner wall of the cone 1, thereby... The rake frame 5 and drive shaft 4 are supported to ensure the stability of the drive shaft 4 and rake frame 5 during rotation. When the feed water flow increases or the speed of the rake frame 5 increases, the speed of the roller 7 will also increase. As the particles and flocs flow towards the inner wall of the cone 1, the particles and flocs will converge towards the roller 7 under the rotation of the roller 7 and be squeezed by the contact part between the roller 7 and the cone 1, thereby increasing the density of the flocs and causing them to move to the lower transition zone and compression zone. This prevents the particles and flocs from floating up and polluting the water in the clarification zone, ensuring that the overflow of the clarification zone can be directly recycled and reused, while improving the settling efficiency of the flocs.

[0036] In this embodiment, a reset spring 84 is fixedly connected to the bottom end of the vertical sliding column 82. After the reset spring 84 is released, it drives the vertical sliding column 82 to slide upward.

[0037] As shown in Figure 5, the return spring 84 stores energy when the vertical slide column 82 is pressed down. When the cam 72 does not push the horizontal slide column 61, the horizontal slide column 61 is driven back by the spring connected to it. At this time, the sliding frame 73 will abut against the side of the cam 72. Due to the limitation of the shape of the cam 72 and the rotation speed of the rake frame 5, the horizontal slide column 61 can only slide slowly. At this time, under the restriction of the roller 62 and the inclined groove 831, the vertical slide column 82 can also only slide slowly to avoid the vertical slide column 82 moving up quickly and causing the guide plate 8 to vibrate, affecting the sedimentation effect of particles and flocs. At the same time, the slow upward movement of the vertical slide column 82 will also drive the rotating disk 81 to rotate slowly, ensuring that the rotation of the rotating disk 81 will not throw the particles in the sedimentation zone upward and pollute the clarification zone.

[0038] In this embodiment, the cam 72 has symmetrical protruding sections 721. When the sliding frame 73 contacts the protruding section 721, it drives the horizontal sliding column 61 to slide in the direction of the transmission shaft 4.

[0039] As shown in Figure 6, the symmetrically arranged protruding sections 721 allow the horizontal sliding column 61 to slide rhythmically, thereby facilitating the elimination of vibrations in the drive shaft 4 and the rake frame 5. In addition, the symmetrical protruding sections 721 allow the horizontal sliding column 61 to slide at a higher frequency, thereby driving the rotating disk 81 to rotate at a higher frequency, reducing the adhesion of particles and flocs between the guide plates 8.

[0040] Secondly, since a spring is provided at the end of the horizontal sliding column 61 facing the drive shaft 4, and the rotation speed of the rake frame 5 is relatively slow, the rotation speed of the roller 7 is also relatively slow. This causes the horizontal sliding column 61 to slide at a relatively slow speed, thereby causing the rotating disk 81 to rotate at a relatively slow speed. This ensures that the rotation of the rotating disk 81 will not throw the particles in the sedimentation zone upwards and pollute the clarification zone, so that the purity of the water in the clarification zone meets the requirements.

[0041] In this embodiment, a feed tank 3 is fixedly connected to the bottom surface of the cable tray 2, and a liquid injection pipe is connected around the bottom of the feed tank 3. A dispersion device is installed inside the feed tank 3.

[0042] As shown in Figure 2, the feed tank 3 is set in the clarification zone of the cone tank 1, while the injection pipes around it face downward and are located in the settling zone. In this way, the low-concentration slurry injected into the cone tank 1 by the injection pipes will flow downward, thereby reducing the upward flow of particles and ensuring the purity of the overflow from the clarification zone.

[0043] In this embodiment, a discharge cone 11 is provided at the bottom of the cone 1, and the discharge cone 11 is connected to the underflow discharge device. Multiple scraper blades 51 are fixedly connected to the bottom end of the rake frame 5.

[0044] As the tailings slurry settles in cone 1, the particles accumulate in the discharge cone 11 at the bottom. With the suction of the slurry pump connected to discharge cone 11, the underflow is pressurized and transported to a filter press, tailings dam or reprocessing system. A control valve is also installed between discharge cone 11 and slurry pump.

[0045] In this embodiment, a step ladder 12 is fixedly installed on the outer side of the cone 1, and the top of the step ladder 12 is connected to the cable tray 2.

[0046] As shown in Figure 1, the height of the deep cone thickener used in the mine is usually 15 to 20 meters, and the diameter of the cone 1 is about 10 meters. In order to enable operators to better inspect and clean, it is necessary to install a ladder 12 connected to the cable tray 2.

[0047] Working principle:

[0048] When using this equipment to concentrate low-concentration tailings slurry, firstly, the low-concentration slurry and flocculant are injected into the feed tank 3. At this time, the dispersing device in the feed tank 3 will evenly sprinkle the injected tailings slurry into the cone 1. As the low-concentration tailings slurry settles in the cone 1, the particles contained therein will agglomerate under the action of the flocculant.

[0049] While the tailings slurry settles in the cone 1, the drive shaft 4 drives the rake frame 5 to rotate slowly. Since a high-concentration paste-like mud layer will form in the compression zone at the bottom of the cone section, it cannot flow to the bottom discharge cone 11 by gravity alone. Therefore, the stirring of the rake frame 5 can improve the fluidity of the mud layer in the compression zone, making it easier to be extracted. At the same time, for high-viscosity mud layers, the rotation of the rake frame 5 can slightly break up the hardened layer, release the water in the mud layer, and indirectly increase the underflow concentration.

[0050] When the rake frame 5 rotates, the rollers 7 connected to the rake frame 5 rotate together. At this time, the rollers 7 around the frame provide support to the drive shaft 4 through the cross frame 6, making the rotation of the drive shaft 4 smoother. Simultaneously, as the rollers 7 rotate, the cams 72 sleeved on the roller shafts drive the sliding frame 73 to slide within the cross frame 6. At this time, the horizontal sliding column 61 slides horizontally under the drive of the sliding frame 73, thereby driving the lower pressure block 83 to move downward through the rollers 62. At this time, the vertical sliding column 82 moves downward under the drive of the lower pressure block 83, thereby causing the rotating disk 81 to rotate through the toothed block 821. At this time, the flocculation adhering between the two guide plates 8 will be rotated. The rotation of the plate 81 causes the flocs to separate from the guide plate 81, thus allowing the guide plate 8 to maintain normal operation. At the same time, since the rake frame 5 rotates at a low speed, the roller 7 also rotates at a low speed, which ensures that the rotating plate 81 rotates at a low speed during the rotation process. This ensures that the rotating plate 81 will not cause water flow due to excessive speed during the rotation process, thus ensuring that when removing the flocs and other materials attached between the guide plates 8, it will not cause excessive impact on the surrounding water body. This also prevents particles and flocs in the sedimentation zone where the rotating plate 81 is located from floating to the clarification zone and overflowing into the recycling water device, ensuring the purity of the overflow.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A deep cone thickener for thickening tailings slurry in mines, comprising a cone (1), wherein a bridge (2) is fixedly connected to the top surface of the cone (1), and a reducer (21) is fixedly connected to the top surface of the bridge (2), characterized in that: The output end of the reducer (21) is connected to a drive shaft (4) that coincides with the axis of the cone (1). Multiple rake frames (5) are fixedly connected to the drive shaft (4). Multiple sets of cross frames (6) are fixedly connected to the side of the drive shaft (4). A mounting base (71) is fixedly connected to one end of the cross frame (6) near the inner wall of the cone (1). Rollers (7) are rotatably installed between two adjacent mounting bases (71) arranged vertically. A guide plate (8) is fixedly connected to each set of cross frames (6). The guide plate (8) rotates inward. Multiple rotating disks (81) are dynamically installed. A cam (72) is fixedly sleeved on the rotating shaft of the roller (7). The cam (72) is located in the mounting base (71). A sliding frame (73) is slidably connected in the mounting base (71). The sliding frame (73) abuts against the side of the cam (72). A horizontal sliding column (61) is slidably connected in the cross frame (6). The horizontal sliding column (61) is fixedly connected to the adjacent end of the sliding frame (73). A vertical sliding column (82) is slidably connected in the guide plate (8). The horizontal sliding column... (61) When moving towards the drive shaft (4), the vertical slide column (82) slides downward and drives the rotating disk (81) to rotate; the side of the horizontal slide column (61) is movably sleeved with a roller (62), and the side of the vertical slide column (82) near the horizontal slide column (61) is fixedly connected with a lower pressure block (83). The side of the lower pressure block (83) adjacent to the horizontal slide column (61) is provided with an inclined groove (831). When the horizontal slide column (61) moves in a straight line, the roller (62) drives the lower pressure block (83) to move in the vertical direction. The horizontal sliding column (61) is fixedly connected to a spring at one end facing the transmission shaft (4); the circumferential side of the rotating disk (81) is provided with an inner groove (811), and the side of the vertical sliding column (82) is connected to the inside of the inner groove (811) with meshing tooth blocks (821). When the vertical sliding column (82) moves in the vertical direction, it drives the rotating disk (81) to rotate; the roller (7) abuts against the inner side of the cone (1), and the roller (7) is located in the settling area and transition area inside the cone (1).

2. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: The adjacent vertical sliding columns (82) are located on different sides of the rotating disk (81), so that the rotation directions of the adjacent rotating disks (81) are opposite.

3. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: A reset spring (84) is fixedly connected to the bottom end of the vertical slide column (82). After the reset spring (84) is released, it drives the vertical slide column (82) to slide upward.

4. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: The cam (72) has symmetrical protruding sections (721). When the sliding frame (73) contacts the protruding section (721), it drives the horizontal sliding column (61) to slide in the direction of the transmission shaft (4).

5. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: The bottom surface of the bridge frame (2) is fixedly connected to the feed tank (3), and the bottom end of the feed tank (3) is connected to the injection pipe around the perimeter. The feed tank (3) is equipped with a dispersion device inside.

6. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: The bottom of the cone (1) is provided with a discharge cone (11), which is connected to the underflow discharge device. The bottom of the rake frame (5) is fixedly connected with multiple scraper blades (51).

7. A deep cone thickener for thickening mine tailings slurry according to claim 1, characterized in that: A step ladder (12) is fixedly installed on the outer side of the cone (1), and the top of the step ladder (12) is connected to the bridge frame (2).

Images