A thickener with a sealing mechanism

Abstract

This invention discloses a thickener with a sealing mechanism, relating to the field of thickener technology. The invention includes a thickener body, a rotating shaft, a rake frame, and a movable box. The mixing mechanism includes a mixing rod with a spiral blade fixed to it, and a sealing mechanism also fixed to the mixing rod. A shifting mechanism is slidably disposed on the outer circumference of the rotating shaft. The rotating shaft drives the movable box to rotate, thereby causing the friction wheel to drive the mixing rod and spiral blade to rotate and mix the slurry, ensuring thorough mixing of the flocculant and slurry. The rotating shaft drives the dispersion disc to rotate, which can disperse the slurry to various positions within the thickener body, ensuring the flocculant is also evenly distributed within the thickener body. The shifting mechanism causes the dispersion disc to rise, reducing the opening of the discharge tank and thus decreasing the discharge speed. The movable box moves downwards, making the mixing rod parallel to the bottom of the thickener body. At this time, the rotating spiral blade stirs up the mud layer at the bottom of the thickener body, reducing the resistance on the rake frame and preventing deformation or jamming of the rake frame.

Description

Technical Field

[0001] This invention relates to the field of thickener technology, and more specifically to a thickener with a sealing mechanism. Background Technology

[0002] A thickener is an indispensable piece of equipment in the mineral processing industry. Its main function is to separate solid particles from liquid in the slurry through gravity settling, thereby concentrating the slurry. The working principle of the thickener is primarily based on gravity settling. The slurry enters the thickener through the feed pipe, and the solid particles in the slurry gradually settle to the bottom of the thickener under the action of gravity, forming a concentrated sludge layer. At the same time, the clear supernatant is discharged from the thickener through the overflow weir. A scraper is installed at the bottom of the thickener, which scrapes the settled sludge towards the discharge port, thus achieving slurry concentration.

[0003] During operation, thickeners typically require mixing the slurry to be settled with flocculants to achieve rapid settling. Most flocculants are added to the feed pipe for mixing with the slurry before entering the thickener. This allows the slurry particles to combine with the flocculants, forming flocs that settle to the bottom of the thickener. However, in current technology, thickeners are often fed from a fixed point, resulting in minimal flocculant movement after entering the thickener. This leads to less flocculant in the slurry further from the feed point, while flocculant accumulates at the feed point, preventing it from fully combining with the slurry. Consequently, the uniformity of the sludge layer within the thickener is poor, with inconsistent thickness and density in different areas. This results in fluctuating sludge concentrations at the discharge, hindering the stable operation of subsequent sludge treatment processes and impacting overall sedimentation and thickening efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a thickener with a sealing mechanism to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a thickener with a sealing mechanism, comprising a thickener body and a rotating shaft rotatably disposed within the thickener body, wherein multiple rakes are fixedly disposed on the rotating shaft, a feeding mechanism is fixedly disposed on the thickener body, and a movable box is slidably disposed on the rotating shaft; a stirring mechanism, comprising four stirring rods rotatably disposed on the outer circumference of the movable box, each stirring rod being fixedly disposed with a spiral blade for stirring the slurry, and a sealing mechanism being fixedly disposed on each stirring rod; a shifting mechanism, which is slidably disposed on the outer circumference of the rotating shaft, wherein when the rotating shaft rotates, the spiral blades are driven by the movable box to stir the slurry; when the mud layer at the bottom of the thickener body is thick, the shifting mechanism drives each spiral blade to descend parallel to the bottom of the thickener body, while simultaneously changing the rotation direction of the spiral blades, stirring the mud layer at the bottom of the thickener body to thin the mud layer, and causing the feeding mechanism to reduce the amount of slurry fed.

[0006] Preferably, a lifting ring is slidably arranged inside the movable box, and four fixing plates are fixedly arranged on the top of the lifting ring. Each fixing plate is slidably connected to the inner wall of the thickener body, and a driving component for driving each stirring rod to rotate is arranged at the bottom of the lifting ring.

[0007] Preferably, a rotating ring is provided inside the thickener body, each of the fixed plates is rotatably connected to the rotating ring, a movable cylinder is slidably provided at the end of each stirring rod away from the rotating shaft, a rotating plate is rotatably provided on each movable cylinder, and the end of each rotating plate away from the stirring rod is fixedly connected to the rotating ring.

[0008] Preferably, the driving component includes a first friction ring fixedly disposed inside the movable box, a telescopic rod fixedly disposed on the first friction ring, and the end of each telescopic rod away from the first friction ring is fixedly connected to a lifting ring, and a first spring is fixedly disposed between the first friction ring and the lifting ring.

[0009] Preferably, the sealing mechanism includes four rotating balls rotatably disposed on the outer periphery of the movable box, each stirring rod being rotatably connected to each of the rotating balls in a one-to-one correspondence, and each stirring rod having a sealing bladder fixedly disposed on the side near the movable box, with the end of each sealing bladder away from the rotating ring being fixedly connected to the movable box.

[0010] Preferably, a friction wheel is fixedly provided at the end of the stirring rod away from the rotating ring, and a second friction ring is rotatably provided on the bottom wall of the movable box, with multiple connecting posts fixedly provided between the second friction ring and the first friction ring.

[0011] Preferably, a support frame is fixedly installed on the thickener body, and the feeding mechanism includes a buffer box fixedly installed on the support frame. A liquid discharge trough is opened at the bottom of the buffer box, and a dispersing disc is slidably installed on the rotating shaft. A dispersing groove is opened on the dispersing disc.

[0012] Preferably, a rotating ring is rotatably mounted on the rotating shaft, and a drive rod is fixedly mounted on the rotating ring. The shifting mechanism includes an inner sleeve sleeved on the rotating shaft, a first arc groove adapted to the drive rod being formed on the inner sleeve, an outer sleeve sleeved on the outer circumference of the inner sleeve, a second arc groove adapted to the drive rod being formed on the inner wall of the outer sleeve, a dispersing disc rotatably connected to the outer sleeve, and a connecting frame fixedly mounted at the bottom of the inner sleeve, which is rotatably connected to the top of the moving box.

[0013] Preferably, connecting plates are fixedly provided on both sides of the outer sleeve, and a hydraulic cylinder is fixedly provided on the side of each connecting plate away from the outer sleeve. The side of each hydraulic cylinder away from the outer sleeve is fixedly connected to the bottom of the support frame.

[0014] Preferably, the rake frame includes four push frames fixedly connected to the rotating shaft, each push frame has a sliding plate slidably disposed therein, each sliding plate has several scraper blades fixedly disposed on the side near the bottom of the thickener body, and each push frame and sliding plate has multiple second springs fixedly disposed between them.

[0015] In the above technical solution, the present invention provides a thickener with a sealing mechanism, which has the following beneficial effects: 1. The rotating shaft drives the moving box to rotate, thereby causing the friction wheel to drive the stirring rod and the spiral blade to rotate and stir the slurry, so that the flocculant and the slurry are fully mixed and the sedimentation effect is improved; 2. The rotating shaft drives the dispersing disc to rotate, and the dispersing disc can disperse the slurry to various positions in the thickener body, so that the flocculant is also evenly sprinkled in the thickener body; 3. The shifting mechanism drives the dispersing disc to rise, so that the opening of the discharge tank becomes smaller, thereby reducing the discharge speed and reducing the amount of particle sedimentation, preventing the mud layer at the bottom of the thickener body from accumulating more and more; 4. When the dispersing disc rises, it drives the moving box to move down and makes the stirring rod parallel to the bottom of the thickener body. At this time, when the spiral blade rotates, it stirs up the mud layer at the bottom of the thickener body, reduces the thickness of the mud layer, thereby reducing the resistance when the rake frame scrapes the mud layer, and preventing the rake frame from deforming or getting stuck. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the dispersion disk provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the stirring rod provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the mobile box provided in an embodiment of the present invention;

[0021] Figure 5 Provided for embodiments of the present invention Figure 4 Enlarged view of the structure at point A in the middle;

[0022] Figure 6 This is a schematic diagram of the structure of the rotating ring provided in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the friction wheel provided in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the inner sleeve provided in an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of the pusher frame provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Thickener body; 2. Discharge pipe; 3. Support frame; 4. Drive motor; 5. Rake frame; 10. Rotary shaft; 11. Buffer tank; 12. Discharge trough; 13. Dispersion disc; 131. Dispersion tank; 14. Connecting plate; 15. Hydraulic cylinder; 16. Outer sleeve; 161. First arc groove; 17. Inner sleeve; 171. Second arc groove; 18. Rotary ring; 181. Drive rod; 19. Connecting frame; 21. Moving box; 22. Stirring rod ; 23. Spiral blade; 24. Rotating ball; 25. Friction wheel; 26. Sealing bladder; 31. Lifting ring; 32. Fixed plate; 33. Rotating ring; 34. Moving cylinder; 35. Turning plate; 36. Limiting groove; 41. First friction ring; 42. Second friction ring; 43. Connecting column; 44. First spring; 45. Telescopic rod; 51. Pushing frame; 52. Slide plate; 53. Scraper; 54. Second spring; 55. Pressure sensor. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-9A thickener with a sealing mechanism includes a thickener body 1 and a rotating shaft 10 rotatably disposed within the thickener body 1. Multiple rake frames 5 are fixedly mounted on the rotating shaft 10. A feeding mechanism is fixedly mounted on the thickener body 1. A movable box 21 is slidably disposed on the rotating shaft 10. A mixing mechanism includes four mixing rods 22 rotatably disposed on the outer periphery of the movable box 21. Each mixing rod 22 is fixedly equipped with a spiral blade 23 for mixing the slurry. A sealing mechanism is fixedly mounted on each mixing rod 22. A shifting mechanism is slidably disposed on the outer periphery of the rotating shaft 10. When the rotating shaft 10 rotates, it drives the spiral blades 23 to mix the slurry via the movable box 21. When the mud layer at the bottom of the thickener body 1 is thick, the shifting mechanism... The mechanism drives each spiral blade 23 to descend parallel to the bottom of the thickener body 1, simultaneously changing the rotation direction of the spiral blades 23, stirring the mud layer at the bottom of the thickener body 1 to thin it, and reducing the amount of slurry fed by the feeding mechanism. The upper part of the thickener body 1 is cylindrical, and the lower part is conical. The rotating shaft 10 is coaxially arranged with the thickener body 1, and the moving box 21 can only slide up and down on the rotating shaft 10. When the rotating shaft 10 rotates, it can drive the moving box 21 to rotate together. The discharge port of the feeding mechanism is close to the rotating shaft 10, so the flocculant will also accumulate near the rotating shaft 10 when it enters the thickener body 1. Each stirring rod 22 is rotatably connected to the outer circumference of the moving box 21. When the stirring rod 22 rotates, it drives the corresponding spiral blade 23 to rotate. While rotating around the rotating shaft 10, the stirring rod 22 and the spiral blade 23 also rotate. The spiral blade 23 stirs the slurry during rotation and simultaneously pushes the flocculant near the rotating shaft 10 to a position away from it. This ensures thorough mixing of the slurry and flocculant within the thickener body 1, significantly increasing the flocculant utilization rate. It also makes the sediment at the bottom of the thickener body 1 more uniform, preventing inconsistencies in sludge thickness and density due to poor uniformity of the sludge layer within the thickener body 1, which could lead to unstable sludge concentrations. This improves the overall sedimentation and thickening efficiency. Four rake frames 5 are used. The rake frame 5 scrapes the mud layer settled at the bottom of the thickener body 1 toward the center of the thickener body 1, and thus the concentrated mud layer is discharged through the discharge pipe 2 at the bottom of the thickener body 1. When processing high-concentration, high-specific-gravity slurry, the slurry and flocculant combine to quickly settle a thick layer of high-concentration sediment at the bottom of the thickener body 1. Under normal circumstances, in order not to stir up the settled mud layer, the rotation speed of the rake frame 5 is set relatively slowly. However, when processing high-concentration, high-specific-gravity slurry, the high-concentration mud layer in front of the rake frame 5 will accumulate thicker and thicker, causing the rake frame 5 to be subject to great resistance when rotating, causing the rake frame 5 to jam, deform or even break, affecting the scraping and conveying of the bottom sediment.When a thick, high-concentration sediment appears at the bottom of the thickener body 1, the moving boxes 21 are moved downwards by the shifting mechanism. After the moving boxes 21 move downwards a certain distance, the ends of the stirring rods 22 away from the rotating shaft 10 rotate upwards. When the moving boxes 21 move to the designated position, they stop moving downwards. At this time, the stirring rods 22 are parallel to the conical inner wall at the bottom of the thickener body 1, and the spiral blades 23 are in contact with the upper layer of the mud. When the rotating shaft 10 rotates, it drives the rake frame 5 to rotate, which in turn drives the moving boxes 21 to rotate. When the moving boxes 21 rotate, they drive the stirring rods 22 to rotate synchronously with the rake frame 5, while also driving the stirring rods 22 to rotate on their own axis. When the stirring rods 22 rotate on their own axis, they drive the spiral blades 23 to rotate. At this time, the rotation of the spiral blades 23 will stir up the thick mud layer at the bottom, causing the upper layer of mud to float back to the slurry, thereby thinning the thick mud layer at the bottom and reducing the rake's resistance. The resistance encountered when the frame 5 rotates, and simultaneously, when the moving box 21 moves to the bottom of the thickener body 1, the rotation direction of the stirring rod 22 changes. At this time, when the stirring rod 22 drives the spiral blade 23 to rotate, it pushes the slurry away from the rotating shaft 10 towards the direction closer to the rotating shaft 10 and the discharge pipe 2. It also causes the upper mud layer at the bottom of the thickener body 1 and the stirred sediment to move towards the discharge pipe 2, and as the sediment settles again, it falls into the discharge pipe 2 and its surroundings, improving the discharge efficiency of the mud layer at the bottom of the thickener body 1. While the shifting mechanism drives the moving box 21 to move downward, it reduces the feeding speed of the feeding mechanism, reducing the speed at which particles enter the thickener body 1, thereby preventing the mud layer at the bottom of the thickener body 1 from accumulating more and more, effectively protecting the rake frame 5 and avoiding deformation, jamming, and other phenomena caused by the large resistance of the rake frame 5.

[0030] Furthermore, a lifting ring 31 is slidably installed inside the moving box 21. Four fixing plates 32 are fixedly installed on the top of the lifting ring 31, and each fixing plate 32 is slidably connected to the inner wall of the thickener body 1. A driving component for driving the rotation of each stirring rod 22 is provided at the bottom of the lifting ring 31. The lifting ring 31 is sleeved on the rotating shaft 10, and the lifting ring 31 can slide up and down while rotating on the rotating shaft 10. The switching mechanism drives the moving box 21 to move up and down, and the moving box 21 drives the lifting ring 31 to move together. The lifting ring 31 does not rotate when the moving box 21 rotates because the four fixing plates 32 are slidably connected to the inner wall of the thickener body 1. When the rotating shaft 10 drives the moving box 21 to rotate, the four stirring rods 22 also rotate around the rotating shaft 10. When each stirring rod 22 rotates around the rotating shaft 10, the end of the stirring rod 22 near the rotating shaft 10 abuts against the driving component. As the moving box 21 rotates, the abutment between the stirring rods 22 and the driving component causes each stirring rod 22 to rotate, thereby stirring the slurry. The lifting ring 31 is slidably connected to the moving box 21. After the moving box 21 moves downward to a certain distance, the lifting ring 31 stops moving. At this time, the moving box 21 continues to move downward, thereby causing the stirring rods 22 on the moving box 21 to rotate and become parallel to the bottom of the thickener body 1.

[0031] Furthermore, a rotating ring 33 is provided inside the thickener body 1. Each fixed plate 32 is rotatably connected to the rotating ring 33. A movable cylinder 34 is slidably provided at the end of each stirring rod 22 away from the rotating shaft 10. A rotating plate 35 is rotatably provided on each movable cylinder 34. The end of each rotating plate 35 away from the stirring rod 22 is fixedly connected to the rotating ring 33. The rotating ring 33 is located on the lower side of each fixed plate 32 and is rotatably connected to each fixed plate 32. Each movable cylinder 34 is sleeved on the tail end of the corresponding stirring rod 22. The movable cylinder 34 can slide along the stirring rod 22 while rotating on the stirring rod 22. When the shifting mechanism moves the movable box 21 downward, the rotating ring 33 moves downward simultaneously with each fixed plate 32. Four limiting grooves 36 adapted to each fixed plate 32 are opened on the inner wall of the thickener body 1. Each fixed plate 32 is slidably disposed in each limiting groove 36 corresponding to each other. Inside, when the moving box 21 drives the lifting ring 31 and each fixed plate 32 to move downward to the bottom of the limiting groove 36, the limiting groove 36 prevents the fixed plates 32 and the lifting ring 31 from moving downward. At this time, the moving box 21 continues to move downward. Since the rotating ring 33 cannot move downward, the end of each stirring rod 22 away from the rotating shaft 10 also cannot move downward. When the moving box 21 continues to move downward, it drives the end of each stirring rod 22 close to the rotating shaft 10 to move downward. At this time, each stirring rod 22 gradually tilts. When each stirring rod 22 is parallel to the conical part at the bottom of the thickener body 1, the moving box 21 stops moving downward. At this time, the spiral blade 23 is on the upper side of the mud layer at the bottom of the thickener body 1. At this time, the rotation of the rotating shaft 10 will drive the spiral blade 23 to stir up the mud layer at the bottom of the thickener body 1 and push it towards the discharge pipe 2.

[0032] In another embodiment of the present invention: the driving component includes a first friction ring 41 fixedly disposed inside the movable box 21, and a telescopic rod 45 fixedly disposed on the first friction ring 41. The end of each telescopic rod 45 away from the first friction ring 41 is fixedly connected to a lifting ring 31. A first spring 44 is fixedly disposed between the first friction ring 41 and the lifting ring 31. When each fixed plate 32 abuts against the bottom of the limiting groove 36, the lifting ring 31 and each fixed plate 32 will no longer move downward. At this time, the movable box 21 continues to move downward through the switching mechanism, and the lifting ring 31 moves upward relative to the movable box 21. The first spring 44 is stretched at this time, and each telescopic rod 45 also extends. Each stirring rod 22 Gradually becoming parallel to the bottom of the thickener body 1, after the thick, high-density mud layer at the bottom of the thickener body 1 is cleared and the resistance received by the rake frame 5 is greatly reduced, the moving box 21 is moved upward to the initial position through the switching mechanism. At this time, the first spring 44 is reset, thereby causing each stirring rod 22 to rotate parallel to the fixed plate 32. At this time, the rotation direction of the stirring rod 22 changes, and the slurry is stirred by the spiral blade 23, pushing the slurry containing more flocculant near the rotating shaft 10 to a position away from the rotating shaft 10. It should be noted that in the initial state, the stirring rod 22 is a certain distance from the bottom of the thickener body 1, and the rotation of the stirring rod 22 will not affect the settling at the bottom of the thickener body 1.

[0033] Specifically, the sealing mechanism includes four rotating balls 24 rotatably mounted on the outer periphery of the movable box 21. Each stirring rod 22 is rotatably connected to each rotating ball 24. A sealing bladder 26 is fixedly mounted on the side of each stirring rod 22 closest to the movable box 21. The end of each sealing bladder 26 away from the rotating ring 33 is fixedly connected to the movable box 21. The end of the sealing bladder 26 away from the movable box 21 is fixedly connected to the stirring rod 22, and the end of the sealing bladder 26 close to the movable box 21 is fixedly connected to the movable box 21 and encloses the rotating balls 24. When the stirring rod 22 rotates, the sealing bladder 26 also deforms accordingly. The sealing bladder 26 prevents slurry and particles from contacting the rotating ball 24. The outer wall of the rotating ball 24 is in contact with the outer wall of the moving box 21. When slurry and particles enter the sealing bladder 26, the rotating ball 24 can also prevent slurry and particles from entering the moving box 21, thereby protecting the components inside the moving box 21. Sealing rings (not shown in the diagram) are provided at the bottom of the moving box 21 where it connects to the rotating shaft 10, at the bottom of the moving box 21 where it connects to the lifting ring 31, and at the bottom of the lifting ring 31 where it connects to the rotating shaft 10. The sealing rings, the rotating ball 24, and the sealing bladder 26 can prevent particles and slurry from entering the moving box 21.

[0034] Furthermore, a friction wheel 25 is fixedly installed at the end of the stirring rod 22 away from the rotating ring 33, and a second friction ring 42 is rotatably installed on the bottom wall of the moving box 21. Multiple connecting posts 43 are fixedly installed between the second friction ring 42 and the first friction ring 41. The second friction ring 42 is rotatably connected to the moving box 21, and the first friction ring 41 and the second friction ring 42 are fixedly connected via the connecting posts 43. The lifting ring 31 prevents the first friction ring 41 and the second friction ring 42 from rotating with the moving box 21 via the telescopic rod 45. Initially, each stirring rod 22 and each fixed plate 32 are parallel in the horizontal direction. At this time, the friction wheel 25 abuts against the first friction ring 41. As the moving box 21 rotates, the abutment between the first friction ring 41 and the friction wheel 25 causes the stirring rod 22 to rotate, thereby causing the spiral blade 23 to... The slurry is stirred. The friction wheel 25 is frustoconical. The first friction ring 41 abuts against the end of the friction wheel 25 with the smaller outer diameter away from the stirring rod 22. Since the rotating shaft 10 needs to drive the rake frame 5 to rotate, the rotation speed of the rotating shaft 10 is relatively slow. By abutting the end of the friction wheel 25 with the smaller outer diameter of the first friction ring 41, the rotation speed of the stirring rod 22 can be increased, thereby improving the stirring efficiency. When the moving box 21 moves downward and the stirring rod 22 is parallel to the bottom of the thickener body 1, the friction wheel 25 rotates downward around the rotating ball 24 and abuts against the second friction ring 42. At this time, the second friction ring 42 abuts against the end of the frustoconical friction wheel 25 with the larger diameter, thereby reducing the rotation speed of the friction wheel 25, and thus reducing the rotation speed of the stirring rod 22, thereby preventing the stirring rod 22 from rotating too fast and causing all the mud layer at the bottom of the thickener body 1 to be stirred up.

[0035] In another embodiment of the present invention: a support frame 3 is fixedly installed on the thickener body 1, and the feeding mechanism includes a buffer box 11 fixedly installed on the support frame 3. A discharge trough 12 is opened at the bottom of the buffer box 11, and a dispersion disc 13 is slidably installed on the rotating shaft 10. A dispersion groove 131 is opened on the dispersion disc 13. The support frame 3 supports the buffer box 11. The slurry is pumped into the buffer box 11, and then the flocculant is added into the buffer box 11 to mix with the slurry. The slurry entering the buffer box 11 falls from the discharge trough 12. The dispersion disc 13 is used for... The slurry, shaped like a frustum, falls from the discharge tank 12 onto the top of the frustum-shaped dispersion disc 13. Then, the slurry falls from the bottom of the dispersion disc 13 into the thickener body 1. Part of the slurry passes through the dispersion groove 131 of the dispersion disc 13 and falls near the rotating shaft 10, while another part of the slurry falls through the conical outer wall of the dispersion disc 13 into the thickener body 1 away from the rotating shaft 10. The dispersion disc 13 rotates with the rotating shaft 10, so that the slurry mixed with flocculant can fall into various positions within the thickener body 1, thereby reducing the accumulation of flocculant.

[0036] In another embodiment of the present invention: a rotating ring 18 is rotatably mounted on the rotating shaft 10, and a drive rod 181 is fixedly mounted on the rotating ring 18. The shifting mechanism includes an inner sleeve 17 sleeved on the rotating shaft 10, a first arc groove 161 adapted to the drive rod 181 is formed on the inner sleeve 17, an outer sleeve 16 is sleeved on the outer circumferential surface of the inner sleeve 17, and a second arc groove 171 adapted to the drive rod 181 is formed on the inner wall of the outer sleeve 16. The dispersing disc 13 is rotatably connected to the outer sleeve 16, and a connecting frame 19 is fixedly mounted at the bottom of the inner sleeve 17. The connecting frame 19 is rotatably connected to the top of the moving box 21. Figure 8 As shown, the first arc groove 161 and the second arc groove 171 have the same spiral direction. The first arc groove 161 spirals upward, and the second arc groove 171 spirals downward. The drive rod 181 is located within the first arc groove 161 and the second arc groove 171. In the initial state, the drive rod 181 is at the lower end of the first arc groove 161 and extends into the upper end of the second arc groove 171. When the mud layer at the bottom of the thickener body 1 has a high density and is thick, it generates a huge resistance to the rake frame 5. The dispersing disc 13 is lifted upward. When the dispersing disc 13 moves upward, part of the disc extends into the discharge trough 12, reducing the area of ​​the discharge trough 12 used for discharge. This reduces the speed at which the slurry in the buffer tank 11 falls into the thickener body 1, preventing the mud layer at the bottom of the thickener body 1 from accumulating and thickening. As the dispersing disc 13 rises, it drives the outer sleeve 16 to move upward. The inner sleeve 17 rotates and slides with the rotating shaft 10. The outer sleeve 16 and the inner sleeve 17 slide and rotate together. Figure 8 As shown, when the outer sleeve 16 moves upward, the drive rod 181 rotates to the right around the rotating shaft 10 through the second arc groove 171. When the drive rod 181 rotates to the right, the inner sleeve 17 moves downward through the first sliding groove. When the inner sleeve 17 moves downward, it drives the moving box 21 to move downward, thereby causing the stirring rod 22 and the spiral blade 23 to move downward and parallel to the bottom wall of the thickener body 1. Similarly, when the mud layer at the bottom of the thickener body 1 is cleaned, the dispersing plate 13 moves downward to restore the liquid discharge tank 12. At this time, the inner sleeve 17 moves upward through the cooperation of the first arc groove 161, the second arc groove 171 and the drive rod 181, thereby raising the moving box 21 to the initial position.

[0037] Furthermore, connecting plates 14 are fixedly installed on both sides of the outer sleeve 16, and a hydraulic cylinder 15 is fixedly installed on the side of each connecting plate 14 away from the outer sleeve 16. The side of each hydraulic cylinder 15 away from the outer sleeve 16 is fixedly connected to the bottom of the support frame 3. When the movable box 21 needs to move up and down, the connecting plates 14 are raised and lowered by the hydraulic cylinder 15, thereby driving the outer sleeve 16 and the dispersing plate 13 to move up and down.

[0038] Specifically, the rake frame 5 includes four push frames 51 fixedly connected to the rotating shaft 10. Each push frame 51 has a sliding plate 52 slidably installed inside. Several scraper blades 53 are fixedly installed on the side of each sliding plate 52 near the bottom of the thickener body 1. Multiple second springs 54 are fixedly installed between each push frame 51 and the sliding plate 52. Each push frame 51 has a fixed pressure sensor 55, which is electrically connected to the hydraulic cylinder 15. The four push frames 51 are staggered from the four stirring rods 22. The bottom of the scraper blades 53 is parallel to the bottom wall of the thickener body 1. The scraper blades 53 scrape the mud layer on the bottom wall of the thickener body 1 towards the discharge pipe 2. When a thick, high-density mud layer appears on the bottom wall of the thickener body 1, the scraper blades 53 will be subjected to pressure when each push frame 51 drives the scraper blades 53 to rotate. When encountering significant resistance, the slide plate 52 will slide into the push frame 51, and the second springs 54 will compress. When the resistance on the scraper blade 53 is large enough, the slide plate 52 will come into contact with the pressure sensor 55 located at the innermost side of the push frame 51. After receiving pressure, the pressure sensor 55 will transmit a signal to the hydraulic cylinder 15. This is existing technology. Subsequently, the hydraulic cylinder 15 will start to lift the dispersing disc 13, reduce the size of the discharge tank 12, and move the moving box 21 downward so that the spiral blade 23 will agitate the mud layer on the bottom wall of the thickener body 1, reduce the resistance on the scraper blade, and effectively prevent the push frame 51 and the slide plate 52 from deforming, jamming, or even breaking. A drive motor 4 is fixedly installed on the buffer box 11. The output end of the drive motor 4 is fixedly connected to the rotating shaft 10, and the rotating shaft 10 is driven to rotate by the drive motor 4.

[0039] 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 thickener with a sealing mechanism, comprising a thickener body (1) and a rotating shaft (10) rotatably disposed within the thickener body (1), wherein a plurality of rake frames (5) are fixedly disposed on the rotating shaft (10), characterized in that, A feeding mechanism is fixedly installed on the body (1) of the thickener, and a movable box (21) is slidably installed on the rotating shaft (10). The stirring mechanism includes four stirring rods (22) rotatably disposed on the outer periphery of the movable box (21), each stirring rod (22) is fixedly provided with a spiral blade (23) for stirring the slurry, and each stirring rod (22) is fixedly provided with a sealing mechanism; The shifting mechanism is slidably disposed on the outer circumference of the rotating shaft (10). When the rotating shaft (10) rotates, it drives each spiral blade (23) to stir the slurry through the moving box (21). When the mud layer at the bottom of the thickener body (1) is thick, the shifting mechanism drives each spiral blade (23) to descend and be parallel to the bottom of the thickener body (1). At the same time, it changes the rotation direction of the spiral blade (23), stirs the mud layer at the bottom of the thickener body (1) to make the mud layer thinner, and makes the feeding mechanism reduce the amount of slurry fed.

2. A thickener with a sealing mechanism according to claim 1, characterized in that, The movable box (21) has a sliding and set lifting ring (31). The top of the lifting ring (31) is fixedly set with four fixed plates (32). Each fixed plate (32) is slidably connected to the inner wall of the thickener body (1). The bottom of the lifting ring (31) is set with a driving component for driving each stirring rod (22) to rotate.

3. A thickener with a sealing mechanism according to claim 2, characterized in that, The thickener body (1) is provided with a rotating ring (33), and each of the fixed plates (32) is rotatably connected to the rotating ring (33). Each of the stirring rods (22) has a movable cylinder (34) slidably arranged at the end away from the rotating shaft (10). Each of the movable cylinders (34) has a rotating plate (35) rotatably arranged on it. The end of each rotating plate (35) away from the stirring rod (22) is fixedly connected to the rotating ring (33).

4. A thickener with a sealing mechanism according to claim 3, characterized in that, The driving component includes a first friction ring (41) fixedly disposed in the movable box (21), a telescopic rod (45) fixedly disposed on the first friction ring (41), and the end of each telescopic rod (45) away from the first friction ring (41) is fixedly connected to the lifting ring (31). A first spring (44) is fixedly disposed between the first friction ring (41) and the lifting ring (31).

5. A thickener with a sealing mechanism according to claim 4, characterized in that, The sealing mechanism includes four rotating balls (24) rotatably disposed on the outer periphery of the movable box (21). Each stirring rod (22) is rotatably connected to each of the rotating balls (24) in a one-to-one correspondence. Each stirring rod (22) is fixedly provided with a sealing bag (26) on the side of the movable box (21) near the moving box (21). The end of each sealing bag (26) away from the rotating ring (33) is fixedly connected to the movable box (21).

6. A thickener with a sealing mechanism according to claim 5, characterized in that, A friction wheel (25) is fixedly provided at the end of the stirring rod (22) away from the rotating ring (33), and a second friction ring (42) is rotatably provided on the bottom wall of the moving box (21). Multiple connecting columns (43) are fixedly provided between the second friction ring (42) and the first friction ring (41).

7. A thickener with a sealing mechanism according to claim 6, characterized in that, The thickener body (1) is fixedly provided with a support frame (3), and the feeding mechanism includes a buffer box (11) fixedly provided on the support frame (3). The bottom of the buffer box (11) is provided with a liquid discharge trough (12). A dispersing disc (13) is slidably provided on the rotating shaft (10), and a dispersing groove (131) is provided on the dispersing disc (13).

8. A thickener with a sealing mechanism according to claim 7, characterized in that, A rotating ring (18) is rotatably mounted on the rotating shaft (10), and a drive rod (181) is fixedly mounted on the rotating ring (18). The shifting mechanism includes an inner sleeve (17) sleeved on the rotating shaft (10). A first arc groove (161) adapted to the drive rod (181) is opened on the inner sleeve (17). An outer sleeve (16) is sleeved on the outer circumference of the inner sleeve (17). A second arc groove (171) adapted to the drive rod (181) is opened on the inner wall of the outer sleeve (16). The dispersing disc (13) is rotatably connected to the outer sleeve (16). A connecting frame (19) is fixedly mounted at the bottom of the inner sleeve (17). The connecting frame (19) is rotatably connected to the top of the moving box (21).

9. A thickener with a sealing mechanism according to claim 8, characterized in that, Connecting plates (14) are fixedly installed on both sides of the outer sleeve (16). A hydraulic cylinder (15) is fixedly installed on the side of each connecting plate (14) away from the outer sleeve (16). The side of each hydraulic cylinder (15) away from the outer sleeve (16) is fixedly connected to the bottom of the support frame (3).

10. A thickener with a sealing mechanism according to claim 9, characterized in that, The rake frame (5) includes four push frames (51) fixedly connected to the rotating shaft (10). Each push frame (51) has a sliding plate (52) slidably installed inside. Each sliding plate (52) has several scraper blades (53) fixedly installed on the side near the bottom of the thickener body (1). Each push frame (51) and sliding plate (52) has multiple second springs (54) fixedly installed between them.

Images