A discharge anti-blocking thickener for ore dressing

Abstract

The present invention belongs to the technical field of thickeners, and specifically is a discharge anti-blocking thickener for mineral processing, comprising a thickener main body, a support frame is fixed in the middle of the top of the thickener main body, a driving shaft is rotatably installed on the support frame, and a driving device for driving the driving shaft to rotate is provided on the top of the support frame; a rake frame assembly is rotatably installed below the support frame through the driving shaft, and the rake frame assembly comprises a cross beam, a plurality of concentric rings are provided below the cross beam, vertical rods are fixed below the plurality of rings, a scraper is fixed at the bottom of the vertical rod, and the bottom end of the scraper is in contact with the inner wall of the bottom of the thickener main body, and a connecting assembly is provided on the cross beam, and the connection or separation of the ring and the cross beam is controlled by the connecting assembly; the present invention connects a plurality of scrapers to the cross beam in batches by arranging a connecting assembly, so that the load on the driving device is gradually increased, thereby avoiding excessive resistance that may be caused by sudden startup and reducing the risk of burning out.

Description

Technical Field

[0001] The invention belongs to the technical field of thickeners, in particular to a discharge anti-blocking thickener for ore dressing. Background Art

[0002] The deep cone thickener is an important equipment widely used in the field of mineral processing, mainly used for solid-liquid separation. In the prior art, the deep cone thickener is usually composed of a conical trough, a feeding device, a rake, a scraper, a driving device, etc. The slurry is fed into the conical trough through the feeding device and enters the compression zone in the trough for compression, flocculation and sedimentation. The clarified overflow water is discharged through the overflow weir at the top of the trough, while the high-concentration underflow at the bottom is discharged from the bottom of the cone. The rake drives the scraper to rotate through the driving device, pushing the concentrated slurry to the center of the trough to prevent sediment blockage. During the operation of the deep cone thickener, the rake rotates to sink and evenly distribute the suspended particles in the slurry, and at the same time guides the water inside the slurry layer to the upper part. This process can not only effectively increase the concentration of the slurry, but also promote the efficiency of solid-liquid separation.

[0003] The invention patent with announcement number CN116899279B discloses an intelligent mineral processing thickener. The key points of its technical solution are: including a thickener, a feeder, a stirring rod and a support column; a feeder for slurry feeding is installed on the thickener; and a support column is installed at the center of the thickener top cover. The invention realizes the sampling of slurry at different levels by collecting slurry through the second feed pipe set on each sampling layer and feeding it into the first feed pipe, which can improve data accuracy and prevent single-layer sampling from causing more slurry agglomeration outside the sampling layer, affecting the normal operation of the equipment.

[0004] However, the above technologies often have the following defects: In the existing design, the stirring rod is fixed at the bottom of the central shaft. When the solid particles in the slurry settle and accumulate at the bottom of the thickener, the stirring rod will encounter greater resistance during rotation, which causes the drive device to bear a greater load when starting. Excessive load will cause the drive device to be easily overloaded during initial startup, increasing the risk of burning out, thereby affecting the normal operation and service life of the equipment. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention provides a discharge anti-blocking thickener for mineral processing.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a discharge anti-blocking thickener for ore dressing, comprising a thickener body, a support frame is fixed in the middle of the top of the thickener body, a driving shaft is rotatably mounted on the support frame, and a driving device for driving the driving shaft to rotate is provided on the top of the support frame; A rake frame assembly is rotatably installed below the support frame via a driving shaft, and the rake frame assembly includes a crossbeam, a plurality of concentric rings are arranged below the crossbeam, vertical rods are fixed below the plurality of rings, a scraper is fixed at the bottom of the vertical rod, and the bottom end of the scraper is in contact with the bottom inner wall of the thickener body, and a connecting assembly is provided on the crossbeam, and the connection or separation of the rings and the crossbeam is controlled by the connecting assembly.

[0007] Preferably, the connecting assembly includes a rotating rod installed on the top of the circular ring, the lower end surface of the beam is evenly distributed with limiting guide rails, and the plurality of circular rings are movably installed inside the limiting guide rails respectively. A through groove is provided on the beam and above the limiting guide rails, a movable cavity is provided inside the top of the through groove, a baffle is slidably installed in the movable cavity, springs for resetting the baffle are symmetrically installed under both sides of the baffle, and an electromagnetic block is installed under the baffle.

[0008] Preferably, the scraper is composed of a fixed frame, a reinforcement rod and an elastic plate, the fixed frame is fixedly connected to the bottom of the vertical rod, elastic plates are respectively fixed on both sides of the fixed frame, reinforcement rods are fixed on both sides of the fixed frame and on the inner sides of the elastic plates, a knocking rod is slidably installed in the middle of the reinforcement rod, and a spring three is sleeved on the knocking rod to reset it, the rotating rod passes through the middle hole of the vertical rod and extends to the inside of the fixed frame, a turntable is fixed to the bottom of the rotating rod through a connecting rod, a top rod is fixed to the top edge of the turntable, a movable block is slidably sleeved on the connecting rod, the movable block is a cylinder with an oblique bottom, a magnet is fixed on the side of the movable block, the magnet can attract the knocking rod, and an impeller is fixed on the top of the rotating rod.

[0009] Preferably, the limiting guide rail is composed of two symmetrically arranged L-shaped limiting plates, the circular ring is movably arranged in the middle of the limiting plates on both sides, a notch one is provided at the bottom of the limiting plates on both sides to allow the vertical rod to pass through, and a notch two is provided at the bottom of the through groove to allow the rotating rod to pass through.

[0010] Preferably, a guide hole is provided on the top of the movable block, a guide rod is slidably installed in the guide hole, the top end of the guide rod is fixedly connected to the fixed frame, and a second spring is sleeved on the guide rod.

[0011] Preferably, a circular feed box is fixed in the middle of the lower part of the support frame, a buffer box is fixed on the side of the feed box, a vertical cylinder is fixed at the bottom of the feed box, a feed pipe is installed under the support frame, and the end of the feed pipe extends to the top of the buffer box.

[0012] Preferably, a partition is fixed between the buffer box and the feed box.

[0013] Preferably, the driving shaft passes through the vertical cylinder, a material distribution plate is fixed on the driving shaft, and the material distribution plate is adjacent to the bottom of the vertical cylinder.

[0014] Preferably, the distance between the side wall of the movable block and the reinforcing rod is greater than the maximum extension length of spring three.

[0015] The beneficial effects of the present invention are as follows: 1. The anti-blocking thickener for ore dressing described in the present invention is provided with a rake frame assembly to stir the slurry to cause the suspended particles in the slurry to sink and be evenly distributed, and the circular ring and the corresponding scraper are connected to the crossbeam one by one from the inside to the outside by providing a connecting assembly. As the scrapers are started outward one by one, the scrapers of the inner ring have begun to rotate to clean up some particles and are subject to less resistance, and the sediment of the outer ring slowly moves along the inclined bottom surface to the middle, the sediment accumulation of the outer ring scraper gradually decreases, and the resistance at the start will not be too large. Therefore, this gradual starting method will keep the driving force required for the rotation of each layer of scrapers in a relatively stable and balanced state, so that the load on the drive device is gradually increased, avoiding the excessive resistance that may be caused by sudden starting, thereby reducing the risk of burning out, so as to ensure the normal operation of the equipment and help extend its service life.

[0016] 2. The present invention describes a discharge anti-blocking thickener for mineral processing. When the cross beam drives the circular ring to rotate together, the liquid flow inside the device simultaneously drives the impeller to rotate, thereby driving the rotating rod to rotate. The rotating rod drives the turntable and the top rod to rotate. The top of the top rod contacts the bottom inclined surface of the movable block, thereby driving the movable block to reciprocate up and down. At the same time, the movable block drives the magnet to move up and down. When the magnet approaches the knocking rod, the knocking rod is attracted to move toward the middle of the scraper. Spring three is stretched. When the magnet completely passes through and moves away from the knocking rod, the return force of spring three is greater than the suction force of the magnet on the knocking rod. The knocking rod is pulled back by spring three and knocks on the inner wall of the elastic plate to make the elastic plate vibrate, thereby making it difficult for sediment to adhere to the outer wall of the scraper, so as to reduce the influence of sediment resistance on the rotation of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 is a stereogram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 is a cross-sectional view from another angle of the present invention; Figure 5 yes Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a cross-sectional view of the scraper of the present invention.

[0019] In the figure: 1. thickener body; 2. support frame; 3. drive shaft; 4. crossbeam; 5. ring; 6. feed pipe; 7. vertical rod; 8. scraper; 9. feed box; 10. buffer box; 11. partition; 12. vertical cylinder; 13. distribution plate; 14. limit guide rail; 15. rotating rod; 16. impeller; 17. through groove; 18. spring one; 19. electromagnetic block; 20. baffle; 21. fixed frame; 22. spring two; 23. guide rod; 24. elastic plate; 25. knocking rod; 26. spring three; 27. reinforcement rod; 28. push rod; 29. ​​turntable; 30. movable block; 31. magnet. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] Embodiment 1: Figures 1 to 6 As shown, a discharge anti-blocking thickener for ore dressing according to an embodiment of the present invention comprises a thickener body 1, a support frame 2 is fixed in the middle of the top of the thickener body 1, a drive shaft 3 is rotatably mounted on the support frame 2, and a drive device for driving the drive shaft 3 to rotate is provided on the top of the support frame 2; A rake assembly is rotatably mounted below the support frame 2 through a drive shaft 3, and the rake assembly includes a crossbeam 4, a plurality of concentric rings 5 ​​are arranged below the crossbeam 4, a vertical rod 7 is fixed below each of the rings 5, a scraper 8 is fixed at the bottom of the vertical rod 7, and the bottom end of the scraper 8 is in contact with the bottom inner wall of the thickener body 1, and a connecting assembly is arranged on the crossbeam 4, and the connection or separation of the rings 5 ​​and the crossbeam 4 is controlled by the connecting assembly; During operation, the slurry is transported to the thickener body 1, and appropriate flocculants are added to cause the slurry to flocculate and settle in the compression zone. The clarified water rises to the overflow weir and is discharged outward through the drain pipe, and the high-concentration bottom flow is discharged outward from the discharge pipe at the bottom of the device; in addition, the driving device (the driving device is composed of existing technologies such as a motor and a reducer, which will not be repeated here) can drive the rake assembly to rotate through the driving shaft 3, wherein the crossbeam 4 in the rake assembly can stir the slurry during the rotation process to cause the suspended particles in the slurry to sink and be evenly distributed. In addition, during the sedimentation process, the connecting assembly can be controlled to connect the multiple rings 5 ​​to the crossbeam 4 respectively, so that the crossbeam 4 can simultaneously drive the multiple rings 5 ​​and the vertical rod 7 and the scraper 8 below to rotate, thereby further releasing the moisture inside the lower slurry layer to guide the moisture to the upper part; After the sedimentation process is completed, the solid particles settled at the bottom need to be discharged. In order to avoid the overall movement of the rake frame assembly being subject to greater resistance, resulting in the risk of burning out due to excessive load on the drive device during startup, the ring 5 is connected to the beam 4 from the inside to the outside through the connecting assembly, that is, the innermost ring 5 is connected to the beam 4 first. At this time, the beam 4 can only drive the innermost ring 5 and the vertical rod 7 and scraper 8 connected below to rotate, and the scraper 8 is used to scrape the innermost sediment and guide it to the middle discharge pipe. At this time, the scraper 8 scrapes away relatively less material, so the resistance encountered at the beginning is smaller, which means that the scraper 8 that has just started to rotate does not need to overcome much resistance; then the ring 5 and the beam 4 at the adjacent position on the outside are connected through the connecting assembly, and so on. , gradually connect multiple rings 5 ​​to the crossbeam 4, as the scrapers 8 start outward one by one, since the scrapers 8 of the inner circle have begun to rotate to clean up some particles, the resistance is small, and the sediment of the outer circle slowly moves along the inclined bottom surface to the middle, the sediment accumulation of the outer circle scrapers 8 gradually decreases, and the resistance at the start will not be too large. Therefore, this gradual start-up method will keep the driving force required for the rotation of each layer of scrapers 8 in a relatively stable and balanced state, so that the load on the drive device gradually increases, avoiding the excessive resistance that may be caused by sudden start-up, thereby reducing the risk of burning, so as to enable the normal operation of the equipment and help to extend its service life; in addition, the sediment at the bottom is guided layer by layer by the scrapers 8, and the discharge volume is small at one time, which can avoid clogging the discharge pipe.

[0022] The connecting assembly includes a rotating rod 15 installed on the top of the ring 5, and the lower end surface of the beam 4 is evenly distributed with a limit rail 14. The plurality of rings 5 ​​are movably installed inside the limit rail 14. A through slot 17 is provided on the beam 4 and above the limit rail 14. A movable cavity is provided inside the top of the through slot 17. A baffle 20 is slidably installed in the movable cavity. Springs 18 for resetting the baffle 20 are symmetrically installed below both sides of the baffle 20, and an electromagnetic block 19 is installed below the baffle 20. During operation, the circular ring 5 is limited by the limiting guide rail 14. When the circular ring 5 needs to be connected to the beam 4 one by one through the connecting assembly, the electromagnetic blocks 19 corresponding to the circular ring 5 are energized one by one from the inside to the outside. The electromagnetic blocks 19 generate suction to attract the baffle 20 to move downward to the outside of the active cavity. During the rotation of the beam 4, the baffle 20 is driven to move. When the baffle 20 contacts the rotating rod 15 at the top of the circular ring 5, the corresponding circular ring 5 can be synchronously pushed to rotate, thereby realizing the connection of the corresponding circular ring 5 to the beam 4 and rotating with the beam 4.

[0023] The scraper 8 is composed of a fixed frame 21, a reinforcing rod 27 and an elastic plate 24, the fixed frame 21 is fixedly connected to the bottom of the vertical rod 7, the elastic plates 24 are fixed on both sides of the fixed frame 21, the reinforcing rods 27 are fixed on both sides of the fixed frame 21 and on the inner side of the elastic plates 24, a knocking rod 25 is slidably installed in the middle of the reinforcing rod 27, and a spring 3 26 is sleeved on the knocking rod 25 for resetting it, the rotating rod 15 passes through the middle hole of the vertical rod 7 and extends to the inside of the fixed frame 21, a rotating disk 29 is fixed to the bottom of the rotating rod 15 through a connecting rod, a top rod 28 is fixed to the top edge of the rotating disk 29, a movable block 30 is slidably sleeved on the connecting rod, the movable block 30 is a cylinder with an oblique bottom, a magnet 31 is fixed on the side of the movable block 30, the magnet 31 can attract the knocking rod 25, and an impeller 16 is fixed on the top of the rotating rod 15; During operation, when the cross beam 4 drives the ring 5 to rotate together, the liquid flow inside the device simultaneously drives the impeller 16 to rotate, thereby driving the rotating rod 15 to rotate. The rotating rod 15 drives the turntable 29 and the top rod 28 to rotate. The top of the top rod 28 contacts the bottom inclined surface of the movable block 30, thereby driving the movable block 30 to reciprocate up and down. At the same time, the movable block 30 drives the magnet 31 to move up and down. When the magnet 31 approaches the knocking rod 25, the knocking rod 25 is attracted to move toward the middle of the scraper 8, and the spring three 26 is stretched. When the magnet 31 completely passes through and moves away from the knocking rod 25, the pullback force of the spring three 26 is greater than the suction force of the magnet 31 on the knocking rod 25. The knocking rod 25 is pulled back by the spring three 26 and knocks on the inner wall of the elastic plate 24, so that the elastic plate 24 vibrates, thereby making it difficult for the sediment to adhere to the outer wall of the scraper 8, so as to reduce the influence of the sediment resistance on the rotation of the scraper 8.

[0024] The limiting guide rail 14 is composed of two symmetrically arranged L-shaped limiting plates, the circular ring 5 is movably arranged in the middle of the limiting plates on both sides, and a notch 1 is provided at the bottom of the limiting plates on both sides to allow the vertical rod 7 to pass through, and a notch 2 is provided at the bottom of the through groove 17 to allow the rotating rod 15 to pass through; when working, the circular ring 5 is limited by the two symmetrically arranged L-shaped limiting plates; by setting the notch 1 and the notch 2, the circular ring 5 and the cross beam 4 can rotate relative to each other, so that the cross beam 4 can drive the specified circular ring 5 to rotate, thereby preventing the non-working circular ring 5 from affecting the rotation of the cross beam 4.

[0025] A guide hole is provided at the top of the movable block 30, in which a guide rod 23 is slidably installed. The top of the guide rod 23 is fixedly connected to the fixed frame 21, and a spring 22 is sleeved on the guide rod 23. When working, the guide rod 23 and the guide hole cooperate to limit the movement direction of the movable block 30, so that the movable block 30 can only move up and down and will not rotate. The movable block 30 can be reset by setting the spring 22, so that the movable block 30 is always in contact with the top rod 28.

[0026] A circular feed box 9 is fixed to the middle part below the support frame 2, a buffer box 10 is fixed to the side of the feed box 9, a vertical cylinder 12 is fixed to the bottom of the feed box 9, and a feed pipe 6 is installed below the support frame 2, and the end of the feed pipe 6 extends to the top of the buffer box 10; when working, a pipeline for filling flocculant is arranged above the buffer box 10 (not shown in the figure). When adding materials, the slurry is introduced into the buffer box 10 through the feed pipe 6, and the flocculant is injected through the pipeline. The slurry is buffered and energy is released through the buffer box 10, and the slurry and the flocculant collide in the buffer box 10 to make the two better mixed. Then the slurry enters the feed box 9, and then flows into the inside of the thickener body 1 through the vertical cylinder 12 to complete the feeding work.

[0027] A partition 11 is fixed between the buffer box 10 and the feed box 9; during operation, the slurry is blocked by the partition 11 when entering the feed box 9 from the buffer box 10, so that the slurry refluxes, so that the slurry and the flocculant are better mixed; after the slurry and the flocculant are effectively mixed, they flow into the feed box 9 from the gaps at both ends of the partition 11 and are discharged downward.

[0028] The driving shaft 3 passes through the vertical cylinder 12, and a distribution plate 13 is fixed on the driving shaft 3, and the distribution plate 13 is adjacent to the bottom of the vertical cylinder 12; when working, the slurry flows downward from the vertical cylinder 12, and the slurry is diffused to the surroundings in a parabolic trend through the action of the distribution plate 13, so that the slurry is quickly settled and separated in the water.

[0029] Embodiment 2: Figure 6 As shown, compared with Example 1, another implementation of the present invention is: the distance between the side wall of the movable block 30 and the reinforcing rod 27 is greater than the maximum extension length of the spring three 26; when working, when the magnet 31 is opposite to the knocking rod 25, the knocking rod 25 will not be adsorbed together with the magnet 31; when the knocking rod 25 is reset and knocked on the inner wall of the elastic plate 24 under the action of the spring three 26, the generated reverse force causes the knocking rod 25 to be vibrated again, thereby achieving multiple knocks.

[0030] Working principle: When feeding, the slurry is introduced into the buffer box 10 through the feed pipe 6, and the flocculant is injected through the pipeline. The slurry is buffered and released through the buffer box 10, and the slurry and the flocculant collide in the buffer box 10 to make the two better mixed. Then the slurry enters the feed box 9, and then flows into the thickener body 1 through the vertical cylinder 12 to complete the feeding work; Afterwards, the slurry flocculates and settles in the compression zone, and the clarified water rises to the overflow weir and is discharged outward through the drainage pipe, and the high-concentration bottom flow is discharged outward from the discharge pipe at the bottom of the device; in addition, the driving device can drive the rake assembly to rotate through the driving shaft 3, wherein the crossbeam 4 in the rake assembly can stir the slurry during the rotation process to cause the suspended particles in the slurry to sink and be evenly distributed. In addition, during the sedimentation process, the connecting assembly can be controlled to connect the multiple rings 5 ​​with the crossbeam 4 respectively, so that the crossbeam 4 can simultaneously drive the multiple rings 5 ​​and the vertical rod 7 and scraper 8 below to rotate, thereby further releasing the moisture inside the lower slurry layer to guide the moisture to the upper part; When the sedimentation process is completed, the solid particles settled at the bottom need to be discharged. In order to avoid the rake frame assembly from being subjected to large resistance when moving at the same time, resulting in the risk of burning out due to excessive load on the drive device during startup, the ring 5 is connected to the beam 4 from the inside to the outside through the connecting assembly, that is, the innermost ring 5 is connected to the beam 4 first. At this time, the beam 4 can only drive the innermost ring 5 and the vertical rod 7 and scraper 8 connected below to rotate, and the scraper 8 is used to scrape the innermost sediment and guide it to the middle discharge pipe. At this time, the scraper 8 scrapes away relatively less material, so the resistance encountered at the beginning is small, which means that the scraper 8 does not need to overcome a lot of resistance when it starts to rotate. Large resistance; then, the circular ring 5 and the crossbeam 4 at the adjacent position on the outside are connected by the connecting assembly, and so on, and multiple circular rings 5 ​​are gradually connected to the crossbeam 4. As the scrapers 8 start outward one by one, since the scrapers 8 of the inner circle have begun to rotate to clean up some particles, the resistance is small, and the sediment of the outer circle slowly moves along the inclined bottom surface to the middle, the sediment accumulation of the outer circle scrapers 8 gradually decreases, and the resistance at the start will not be too large. Therefore, this gradual start-up method will keep the driving force required for the rotation of each layer of scrapers 8 in a relatively stable and balanced state, so that the load on the drive device gradually increases, avoiding excessive resistance that may be caused by sudden start-up; When the cross beam 4 drives the ring 5 to rotate together, the liquid flow inside the device simultaneously drives the impeller 16 to rotate, thereby driving the rotating rod 15 to rotate. The rotating rod 15 drives the turntable 29 and the top rod 28 to rotate. The top of the top rod 28 contacts the bottom inclined surface of the movable block 30, thereby driving the movable block 30 to reciprocate up and down. At the same time, the movable block 30 drives the magnet 31 to move up and down. When the magnet 31 approaches the knocking rod 25, the knocking rod 25 is attracted to move toward the middle of the scraper 8, and the spring three 26 is stretched. When the magnet 31 completely passes through and moves away from the knocking rod 25, the pull-back force of the spring three 26 is greater than the suction force of the magnet 31 on the knocking rod 25. The knocking rod 25 is pulled back by the spring three 26 and knocks on the inner wall of the elastic plate 24, so that the elastic plate 24 vibrates, thereby making it difficult for the sediment to adhere to the outer wall of the scraper 8, so as to reduce the influence of the sediment resistance on the rotation of the scraper 8.

[0031] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A discharge anti-blocking thickener for mineral processing, comprising a thickener body (1), a support frame (2) being fixed in the middle of the top of the thickener body (1), a drive shaft (3) being rotatably mounted on the support frame (2), and a drive device for driving the drive shaft (3) to rotate is provided at the top of the support frame (2); Features: A rake frame assembly is rotatably mounted below the support frame (2) via a drive shaft (3), the rake frame assembly comprising a crossbeam (4), a plurality of concentric circular rings (5) are arranged below the crossbeam (4), vertical rods (7) are fixed below the plurality of circular rings (5), a scraper (8) is fixed at the bottom of the vertical rod (7), the bottom end of the scraper (8) is in contact with the bottom inner wall of the thickener body (1), and a connecting assembly is arranged on the crossbeam (4), and the connection or separation of the circular rings (5) and the crossbeam (4) is controlled by the connecting assembly.

2. The anti-blocking thickener for mineral processing according to claim 1, characterized in that: The connecting assembly comprises a rotating rod (15) mounted on the top of the circular ring (5); the lower end surface of the cross beam (4) is evenly distributed with limiting guide rails (14); a plurality of the circular rings (5) are movably mounted inside the limiting guide rails (14); a through slot (17) is provided on the cross beam (4) and above the limiting guide rails (14); a movable cavity is provided inside the top of the through slot (17); a baffle (20) is slidably mounted in the movable cavity; springs (18) for resetting the baffle (20) are symmetrically mounted below both sides of the baffle (20); and an electromagnetic block (19) is mounted below the baffle (20).

3. The anti-blocking thickener for mineral processing according to claim 2, characterized in that: The scraper (8) is composed of a fixed frame (21), a reinforcing rod (27) and an elastic plate (24). The fixed frame (21) is fixedly connected to the bottom of the vertical rod (7). The elastic plates (24) are respectively fixed on both sides of the fixed frame (21). The reinforcing rods (27) are fixed on both sides of the fixed frame (21) and located inside the elastic plates (24). A knocking rod (25) is slidably mounted in the middle of the reinforcing rod (27). The knocking rod (25) is sleeved with a spring (26) for returning the knocking rod to its original position. The rotating rod (25) is 15) passes through the middle hole of the vertical rod (7) and extends to the inside of the fixed frame (21); a rotating disk (29) is fixed to the bottom of the rotating rod (15) through a connecting rod; a top rod (28) is fixed to the top edge of the rotating disk (29); a movable block (30) is slidably sleeved on the connecting rod; the movable block (30) is a cylinder with an oblique bottom; a magnet (31) is fixed to the side of the movable block (30); the magnet (31) is capable of attracting the knocking rod (25); and an impeller (16) is fixed to the top of the rotating rod (15).

4. The anti-blocking thickener for mineral processing according to claim 2, characterized in that: The limiting guide rail (14) is composed of two symmetrically arranged L-shaped limiting plates, the circular ring (5) is movably arranged in the middle of the limiting plates on both sides, the bottom of the limiting plates on both sides is provided with a notch 1 for allowing the vertical rod (7) to pass through, and the bottom of the through groove (17) is provided with a notch 2 for allowing the rotating rod (15) to pass through.

5. The anti-blocking thickener for mineral processing according to claim 3, characterized in that: A guide hole is provided at the top of the movable block (30), a guide rod (23) is slidably installed in the guide hole, the top end of the guide rod (23) is fixedly connected to the fixed frame (21), and a second spring (22) is sleeved on the guide rod (23).

6. The anti-blocking thickener for mineral processing according to claim 1, characterized in that: A circular feed box (9) is fixed in the middle of the lower part of the support frame (2), a buffer box (10) is fixed on the side of the feed box (9), a vertical cylinder (12) is fixed at the bottom of the feed box (9), and a feed pipe (6) is installed below the support frame (2), and the end of the feed pipe (6) extends to the top of the buffer box (10).

7. The anti-blocking thickener for ore dressing according to claim 6, characterized in that: A partition plate (11) is fixed between the buffer box (10) and the feed box (9).

8. The anti-blocking thickener for ore dressing according to claim 6, characterized in that: The driving shaft (3) passes through the vertical cylinder (12), and a material distribution plate (13) is fixed on the driving shaft (3), and the material distribution plate (13) is adjacent to the bottom of the vertical cylinder (12).

9. The anti-blocking thickener for mineral processing according to claim 3, characterized in that: The distance between the side wall of the movable block (30) and the reinforcing rod (27) is greater than the maximum extension length of the spring three (26).

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