Slurry circulating double-tank sand mill based on weight sensing

Abstract

The present application relates to the technical field of sand mill, and discloses a slurry circulating double-barrel sand mill based on weight sensing, which comprises a base and a barrel body, a support is installed on the top surface of the base through a bearing, a load plate is fixedly installed on the top surface of the support, the barrel body is symmetrically arranged above the load plate with the support as the center, and a supporting plate is installed on the outer wall surface of the barrel body through a bearing, the slurry circulating double-barrel sand mill based on weight sensing is provided with a double-barrel structure, realizes alternating and circulating operation, improves the overall processing efficiency, can monitor the weight of slurry in the barrel in real time, is convenient for accurately controlling the feeding amount and grasping the sand grinding progress, reduces product quality fluctuation caused by human judgment errors, guarantees the product quality stability, can lift the bottom slurry to the upper part to form a circulation, ensures that the whole barrel of material is uniformly ground, avoids excessive sand grinding or agglomeration phenomenon, improves the sand grinding effect, and the overall structure design is ingenious, which significantly improves the efficiency and quality of slurry production.

Description

Technical Field

[0001] This invention relates to the field of sand mill technology, specifically to a weight-sensing-based slurry circulation dual-bucket sand mill. Background Technology

[0002] In modern industrial production, sand mills are widely used as important material grinding equipment in many fields such as coatings, inks, pharmaceuticals, and electronic materials. Their function is to grind large raw materials into fine particles that meet production requirements, thereby satisfying product quality standards and performance demands. However, existing sand mills still have certain shortcomings, such as: The vertical sand mill, application number CN202120143625.9, has many limitations in its use: The single-bucket design requires that after each grinding operation, the grinding material in the bucket must be completely emptied before the grinding slurry can be refilled to start the next round of operation. This results in a large amount of non-productive waiting time, which seriously restricts the improvement of overall processing efficiency and affects work efficiency. At the same time, it is impossible to monitor the weight of the material, making it difficult to control the amount of material fed. During the sand milling process, it is impossible to monitor the weight change of the slurry in real time and accurately. Operators find it difficult to accurately grasp the amount of material added and the progress of sand milling. This not only increases the difficulty and workload of manual operation, but also makes it easy for product quality to fluctuate due to human judgment errors. For example, in paint production, if the weight of pigment slurry cannot be accurately controlled, the color, hiding power and other properties of the paint will deviate. During the sand milling process, the slurry is prone to local stagnation due to problems such as gravity settling and insufficient flow power, which makes it impossible to achieve uniform circulation throughout the entire tank. This not only leads to insufficient sand milling and uneven particle size distribution, affecting the stability of the final product quality, but may also cause excessive sand milling or agglomeration due to prolonged accumulation of local slurry, further reducing the sand milling effect and hindering the improvement of the slurry's sand milling effect. In view of this, in order to address the above problems, we conducted in-depth research and proposed a weight-sensing-based slurry circulation dual-bucket sand mill. Summary of the Invention

[0003] The purpose of this invention is to provide a weight-sensing-based slurry circulation dual-bucket sand mill to solve the existing problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a weight-sensing-based slurry circulation dual-barrel sand mill, comprising a base and a barrel; The base has a support column mounted on its top bearing, and a carrier plate is fixedly mounted on the top surface of the support column. The barrel is symmetrically positioned above the carrier plate with the support column as the center. A support plate is mounted through the outer wall of the barrel via a bearing. The bottom surface of the support plate is connected to a weighing platform mounted on the top surface of the carrier plate. A weight sensor is installed on the weighing platform. An electric telescopic rod is fixedly mounted on the top surface of the base. A lifting plate is installed at the output end of the electric telescopic rod. A rotating shaft is movably mounted on the lifting plate, and multiple grinding discs are mounted on the rotating shaft. The base is equipped with a power mechanism, the lifting plate is equipped with a drive mechanism, the bottom surface of the lifting plate is equipped with a telescopic mechanism, the bottom of the drive mechanism is equipped with a transmission mechanism, the barrel is equipped with a return mechanism that uses its rotation to circulate the slurry, and the barrel is struck by a striking mechanism when it revolves with the support column. The inner side of the striking mechanism is equipped with a linkage mechanism for generating the barrel's rotation when it revolves.

[0005] The above technical solution facilitates the alternating operation of the two material tanks to improve efficiency. The slurry status is monitored in real time through weight sensing, and the circulation of the slurry improves the grinding effect, thereby improving the slurry production efficiency and quality.

[0006] As a preferred embodiment of the present invention, a positioning rod is provided longitudinally and slidably through the pallet, and the positioning rod is fixedly installed on the top surface of the carrier plate.

[0007] The above technical solution facilitates vertical guidance of the pallet via the positioning rod, ensuring that the barrel maintains a stable posture during revolution, rotation, and weighing, and avoiding the impact of shaking on the grinding accuracy or weight monitoring accuracy.

[0008] As a preferred embodiment of the present invention, the power mechanism includes a servo motor, which is fixedly mounted on the top surface of the base, and a worm gear is keyed to the shaft end of the servo motor. The worm gear meshes with a worm wheel, and the worm wheel is fixedly mounted on the surface of the support column.

[0009] By adopting the above technical solution, it is easy to drive the worm gear to rotate through the servo motor, and use the meshing transmission between the worm gear and the worm wheel to drive the support column to rotate, so as to realize the smooth revolution switching of the two barrels on the carrier plate.

[0010] As a preferred embodiment of the present invention, the driving mechanism includes a drive motor, which is fixedly mounted on the top surface of the bracket, and the bracket is fixedly mounted on the top surface of the base. The output shaft bearing of the drive motor passes through the top of the bracket, and a square rod is coaxially fixedly mounted on the shaft end of the drive motor. A sleeve is slidably sleeved on the outer side of the square rod, and the sleeve has an outer circle and inner square structure that matches the square rod. The longitudinal bearing of the sleeve passes through the lifting plate, and the sleeve is connected to the top end of the rotating shaft through a belt drive device.

[0011] By adopting the above technical solution, it is easy to maintain effective power transmission during the lifting and lowering of the lifting plate through the sliding cooperation between the square rod and the sleeve, ensuring that the drive motor can stably drive the rotating shaft and the grinding disc to rotate, thereby realizing the grinding of the slurry.

[0012] As a preferred embodiment of the present invention, the telescopic mechanism includes a movable rod that slides longitudinally through a lifting plate. A limit block is provided at the top of the movable rod, and a ring is fixedly installed at the bottom of the movable rod. A first spring is sleeved on the outer side of the movable rod. The top of the first spring is fixedly connected to the bottom surface of the lifting plate, and the bottom of the first spring is fixedly connected to the top surface of the ring. A cover plate is bearing-connected to the bottom surface of the ring, and a rotating shaft moves through the cover plate. A sealing ring is installed on the bottom surface of the cover plate.

[0013] By adopting the above technical solution, the elastic thrust of the first spring can be used to make the cover plate fit tightly against the top of the barrel, and the sealing ring can be used to achieve a seal to prevent slurry splashing. At the same time, the cover plate connected by the bearing can rotate synchronously with the barrel to avoid interference with the sanding operation. In addition, the telescopic design can ensure that when the cover plate is in contact with the barrel, the lifting plate can continuously drive the sanding disc to move, so as to realize sanding operation from different height positions and improve the sanding effect.

[0014] As a preferred technical solution of the present invention, the transmission mechanism includes a transmission shaft, which is coaxially fixedly installed at the bottom end of a square rod, and a fixing plate is sleeved on the surface of the transmission shaft. The transmission shaft is connected to the fixing plate by a bearing, and the fixing plate is fixedly installed on the inner wall of the bracket. A transmission gear is coaxially fixedly installed at the bottom end of the transmission shaft, and the transmission gear is alternately meshed with two fixing gear rings fixedly installed on the surfaces of the two barrels.

[0015] By adopting the above technical solution, it is convenient to transmit the power of the drive motor to the transmission gear through the transmission shaft. By utilizing the alternating meshing of the transmission gear and the fixed gear ring, the barrel in the working position is driven to rotate in the opposite direction to the sand grinding disc, thereby improving the uniformity of sand grinding.

[0016] As a preferred embodiment of the present invention, the material return mechanism includes a material return cylinder, which is fixedly installed on the outer wall of the barrel. The material return cylinder sequentially passes through a fixed toothed ring and a support plate, and passes through a circular hole opened on the carrier plate. The lower end of the side plate of the material return cylinder is fixedly connected to one end of a through pipe, and one end of the through pipe is fixedly connected to the bottom of the barrel. A solenoid valve is provided on the through pipe. An auger is installed on the central bearing of the inner top surface of the material return cylinder, and the auger bearing passes through the center of the bottom of the material return cylinder. A connecting gear is coaxially fixedly installed at the bottom end of the auger, and the connecting gear meshes with an inner toothed ring fixedly installed on the bottom surface of the carrier plate. The upper end of the side wall of the material return cylinder is fixedly connected to one end of the material return pipe, and the other end of the material return pipe is fixedly connected to the upper end of the side wall of the barrel.

[0017] By adopting the above technical solution, when the barrel rotates, the connecting gear drives the auger to rotate under the meshing action of the inner ring gear. The slurry at the bottom of the barrel is drawn to the return cylinder through the pipe. After being lifted by the auger, it is sent back to the upper part of the barrel through the return pipe, forming a closed loop circulation, solving the problem of slurry sedimentation, and ensuring that the material in the whole barrel is uniformly ground.

[0018] As a preferred embodiment of the present invention, the striking mechanism includes wedge-shaped push blocks fixedly installed on the left and right sides of the carrier plate and an annular plate fixedly installed on the top surface of the base via a mounting rod. The longitudinal centerline of the annular plate is collinear with the longitudinal centerline of the support column, and a notch is provided on the left side of the annular plate. Multiple sliding rods are slidably installed through the annular plate in the radial direction, and the inner end of the sliding rod is provided with an inclined block adapted to the wedge-shaped push block, and the inclined block and the wedge-shaped push block are movably abutting against each other. A second spring is sleeved on the outer side of the sliding rod, and the outer end of the second spring is fixedly connected to the inner side of the annular plate, and the inner end of the second spring is fixedly connected to the outer side of the inclined block. A connecting plate is fixedly installed on the outer end of the sliding rod, and a striking rod is fixedly installed on the upper end of the inner side of the connecting plate. The striking rod slides through the upper end of the annular plate, and the inner end of the striking rod is movably abutting against the outer wall surface of the barrel.

[0019] By adopting the above technical solution, when the barrel revolves and passes through the annular plate, the wedge-shaped pusher squeezes the inclined block, causing the slide rod to move the striking rod outward. When the wedge-shaped pusher disengages, the second spring resets and drives the striking rod to strike the barrel, using vibration to dislodge the slurry adhering to the inner wall and avoid material waste.

[0020] As a preferred embodiment of the present invention, the linkage mechanism includes multiple fixed rods fixedly installed on the inner side of the annular plate, and a residual tooth ring is fixedly installed at the inner end of the fixed rod, the residual tooth ring being movably engaged with the fixed tooth ring.

[0021] By adopting the above technical solution, when the barrel revolves and passes the residual tooth ring, the fixed tooth ring meshes with it and rotates, so that the auger rotates continuously, ensuring that all the slurry in the return cylinder is sent back to the barrel, avoiding the residual slurry in the return cylinder, and enhancing the wall-breaking effect with the knocking vibration. At the same time, it ensures that the barrel can maintain a certain material flowability when rotating in the non-operation state, which can facilitate material discharge.

[0022] As a preferred embodiment of the present invention, one end of the through pipe is provided with a screen, the other end of the return pipe is fixedly connected to one end of the ring pipe, and the ring pipe is fixedly installed through the side wall of the barrel. A filter screen is provided through the inner side of the ring pipe, and a guide tube is installed through the other end of the ring pipe. A receiving box installed on the barrel wall is provided below the guide tube. A sliding plate is longitudinally slidably connected to the inner wall of the receiving box, and the bottom end of the sliding plate is fixedly connected to one end of the first connecting rod. The sliding plate slides through the bottom of the receiving box, and a first rack is fixedly installed at the other end of the sliding plate. The first rack meshes with the first gear, which is mounted on the surface of the shaft. The shaft bearing is mounted on the wall of the barrel. A second gear is mounted on the shaft and meshes with the second rack. The second rack is fixedly connected to one end of a second connecting rod, which slides through the bottom of the cylinder. The cylinder is fixedly mounted on the side wall of the barrel. A push plate is fixedly mounted on the other end of the second connecting rod and slides longitudinally with the inner wall of the cylinder. A dispensing pipe is fixedly connected through the upper end of the side wall of the cylinder, and the dispensing pipe is fixedly connected through the upper end of the side wall of the barrel.

[0023] By adopting the above technical solution, it is convenient to screen out the less worn grinding media through the screen and let it flow with the slurry. The slurry flows back into the barrel through the filter screen, and the worn grinding media falls into the receiving box, causing the sliding plate to move downward. The differential transmission composed of the first rack, the first gear, the second gear and the second gear causes the second connecting rod to drive the push plate to move upward, thereby pushing the new grinding media in the cylinder to enter the barrel through the delivery pipe, realizing the renewal and replacement of the grinding media.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: This weight-sensing-based slurry circulation dual-barrel sand mill, by setting a dual-barrel structure, allows for feeding or unloading operations in the other barrel while one barrel is performing sand milling operations, realizing alternating cyclic operations. This effectively reduces downtime during single-barrel operation, significantly improves overall processing efficiency, and enables real-time monitoring of the slurry weight in the barrel, facilitating precise control of the feeding amount and monitoring of the sand milling progress. This reduces product quality fluctuations caused by human error and ensures product quality stability. Simultaneously, it can lift the bottom slurry to the top to form a circulation, solving the problem of local stagnation caused by gravity settling of the slurry. This ensures that the material in the entire barrel is ground evenly, avoiding over-grinding or agglomeration, and improving the sand milling effect. The overall structural design is ingenious, significantly improving the efficiency and quality of slurry production. The worm gear is driven by a servo motor to rotate, and the worm wheel drives the support column and the carrier plate to rotate, realizing the switching between the two barrels. This ensures that while one barrel is loading and unloading, the other barrel is performing sanding operations, which greatly reduces the downtime for loading and unloading when operating a single barrel and significantly improves the overall processing efficiency. By installing a weighing platform with a weight sensor at the bottom of the pallet, the weight change of the slurry in the tank can be monitored in real time and accurately. This makes it easier for operators to accurately control the amount of material fed and to keep track of the grinding progress, effectively reducing product quality fluctuations caused by human error. The lifting plate is moved up and down by an electric telescopic rod, which can drive the rotating shaft and sand grinding disc to move down into the barrel of the processing position. The square rod drives the sleeve to rotate by the drive motor, which in turn drives the rotating shaft and sand grinding disc to rotate through the belt drive device, so as to realize the sand grinding operation. The lifting plate can move the cover plate downwards to fit the top of the barrel, and achieve a seal through the elastic thrust of the first spring and the sealing ring. The cover plate, which is connected to the ring bearing, can rotate synchronously with the barrel to avoid interference with the sanding operation. At the same time, while sealing, the lifting plate can be raised and lowered by the electric telescopic rod to adjust the height of the rotating shaft and the sanding disc, so that sanding can be carried out from different heights to improve the sanding effect. In addition, by monitoring the weight change of the slurry in real time during the sanding process, the lifting plate can be used to move the cover plate upwards, so that materials can be added during the sanding process. When the square rod rotates, it drives the transmission gear to rotate through the transmission shaft. At this time, due to the meshing of the transmission gear with the fixed toothed ring on the processing position barrel, the processing position barrel rotates on its own and in the opposite direction to the grinding disc. When the barrel rotates, the meshing of the connecting gear with the inner toothed ring drives the auger to rotate, which draws the slurry and grinding media at the bottom of the barrel to the return cylinder through the through pipe and sends it back to the top of the barrel through the return pipe, forming a closed loop circulation. This solves the problem of local stagnation of slurry due to gravity settling, ensures that the material in the whole barrel is ground evenly, avoids local over-grinding or agglomeration, and improves the grinding effect. When the barrel rotates with the support column to switch work positions, the wedge-shaped pusher that rotates with the carrier plate will push the inclined block during the rotation process, causing the slide rod to move the striking rod outward to compress the second spring. After the wedge-shaped pusher separates from the inclined block, the striking rod strikes the barrel under the reset action of the second spring, using vibration to remove the slurry adhering to the inner wall and reduce material waste. During the switching of the barrel's revolution station, the fixed toothed ring on the barrel at the processing station will disengage from the transmission gear and mesh with the residual toothed ring, causing the barrel to rotate again during the station switching process. This ensures that the auger continues to rotate and that all the slurry in the return cylinder is sent back to the barrel. At the same time, the barrel's rotation, combined with the knocking, enhances the slurry's wall-breaking effect while ensuring the fluidity of the slurry in non-operational states and ensuring the smoothness of material feeding during the revolution. After being fed, the barrel is also struck during its revolution to the processing position and rotates through the fixed toothed ring and the residual toothed ring, causing the auger to rotate and the slurry to circulate, thus achieving pretreatment of the material and improving work efficiency. The abrasive media can be separated by a filter screen, ensuring that the slurry is circulated while the worn grinding media are discharged and new, compliant abrasive media are added at the same time. This achieves automatic renewal of the grinding media, ensuring stable long-term sanding results and reducing manual maintenance costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure when the transmission gear of the present invention meshes with the fixed gear ring; Figure 3 This is a schematic diagram of the worm gear and worm wheel connection structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the rotating shaft, the lifting plate, and the grinding disc of the present invention; Figure 5 This is a schematic diagram of the connection structure between the ring, the rotating shaft, and the sealing ring of the present invention; Figure 6 This is a schematic diagram of the connection structure between the support column and the carrier plate of the present invention; Figure 7 This is a schematic diagram of the connection structure between the connecting gear and the inner ring gear of the present invention; Figure 8 This is a schematic diagram of the connection structure between the barrel body, the pallet, and the return cylinder of the present invention; Figure 9 This is a schematic diagram of the cross-sectional connection structure between the storage tank and the return cylinder of the present invention; Figure 10 This is a schematic diagram of the connection structure between the base and the annular plate of the present invention; Figure 11 This is a schematic diagram of the connection structure between the annular plate and the striking rod of the present invention; Figure 12 This is a schematic diagram of the connection structure between the connecting plate, the sliding rod, and the striking rod of the present invention; Figure 13 This is a schematic diagram of the connection structure between the barrel and the ring pipe in Embodiment 2 of the present invention; Figure 14 This is a schematic diagram of the cross-sectional structure of the barrel in Embodiment 2 of the present invention; Figure 15 This is a schematic diagram of the cross-sectional structure of the receiving box in Embodiment 2 of the present invention.

[0026] In the diagram: 1. Base; 2. Support column; 3. Carrier plate; 4. Barrel body; 5. Pallet; 6. Weighing platform; 7. Bracket; 8. Lifting plate; 9. Rotating shaft; 10. Grinding disc; 11. Electric telescopic rod; 12. Positioning rod; 13. Servo motor; 14. Worm gear; 15. Worm wheel; 16. Drive motor; 17. Square rod; 18. Sleeve; 19. Belt drive device; 20. Movable rod; 21. Ring; 22. First spring; 23. Cover plate; 24. Sealing ring; 25. Drive shaft; 26. Fixed plate; 27. Drive gear; 28. Fixed gear ring; 29. ​​Return cylinder; 30. Through pipe; 31. Screwdriver 32. Connecting gear; 33. Inner ring gear; 34. Return pipe; 35. Wedge-shaped push block; 36. Ring plate; 37. Sliding rod; 38. Inclined block; 39. Second spring; 40. Connecting plate; 41. Striking rod; 42. Fixing rod; 43. Residual tooth ring; 44. Discharge pipe; 45. Material box; 46. Ring pipe; 47. Filter screen; 48. Guide tube; 49. Receiver box; 50. Sliding plate; 51. First connecting rod; 52. First rack; 53. First gear; 54. Shaft; 55. Second gear; 56. Second rack; 57. Second connecting rod; 58. Cylinder; 59. Push plate; 60. Feeding pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0028] Please see Figure 1 - Figure 12The technical solution of this invention is as follows: A weight-sensing-based slurry circulation dual-barrel sand mill includes a base 1 and a barrel 4. A controller for controlling the electrical components of the control equipment is installed on the top surface of the base 1. A material box 45 for receiving material is installed on the top surface of the base 1. A support column 2 is mounted on the top surface of the base 1, and a carrier plate 3 is fixedly installed on the top surface of the support column 2. The barrel 4 is symmetrically positioned above the carrier plate 3 with the support column 2 as the center. Grinding media, specifically steel balls, are placed inside the barrel 4. A discharge pipe 44 with a valve is fixedly installed through the bottom of the barrel 4. A separator mesh is installed at the top of the discharge pipe 44 to separate the slurry from the grinding media, preventing the grinding media from being discharged during material discharge. A support plate 5 is installed through the outer wall of the barrel 4 via a bearing. A positioning rod 12 is longitudinally slidably installed through the support plate 5. Four positioning rods 12 are symmetrically arranged in pairs on each support plate 5, and the positioning rods 12 are fixedly installed on the carrier plate 4. The top surface of plate 3 and the bottom surface of support plate 5 are connected to the weighing platform 6 installed on the top surface of the support plate 3. The weighing platform 6 is equipped with a weight sensor. An electric telescopic rod 11 is fixedly installed on the top surface of the base 1. A lifting plate 8 is installed at the output end of the electric telescopic rod 11. A rotating shaft 9 is installed through the longitudinal bearing on the lifting plate 8. Multiple sand grinding discs 10 are evenly arranged on the rotating shaft 9. The diameter of the sand grinding discs 10 is smaller than the inner diameter of the barrel 4. The center line of the longitudinal axis of the rotating shaft 9 is collinear with the center line of the longitudinal axis of the barrel 4 located below it. A power mechanism is installed on the base 1. A drive mechanism is installed on the lifting plate 8. A telescopic mechanism is installed on the bottom surface of the lifting plate 8. A transmission mechanism is installed at the bottom of the drive mechanism. A return mechanism is installed on the barrel 4 to circulate the slurry by its own rotation. When the barrel 4 revolves with the support column 2, it is struck by a striking mechanism. A linkage mechanism for generating the rotation of the barrel 4 when it revolves is installed inside the striking mechanism.

[0029] The power mechanism includes a servo motor 13, which is fixedly mounted on the top surface of the base 1. The shaft end of the servo motor 13 is keyed to a worm gear 14, which meshes with a worm wheel 15. The worm wheel 15 is fixedly mounted on the surface of the support column 2.

[0030] The drive mechanism includes a drive motor 16, which is fixedly mounted on the top surface of the bracket 7. The bracket 7 is fixedly mounted on the top surface of the base 1. The output shaft bearing of the drive motor 16 passes through the top of the bracket 7. A square rod 17 is coaxially fixedly mounted on the shaft end of the drive motor 16. A sleeve 18 is slidably sleeved on the outer side of the square rod 17. The sleeve 18 has an outer circle and inner square structure that matches the square rod 17. The longitudinal bearing of the sleeve 18 passes through the lifting plate 8. The sleeve 18 is connected to the top end of the rotating shaft 9 through a belt drive device 19.

[0031] The telescopic mechanism includes a movable rod 20, which slides longitudinally through the lifting plate 8. A limit block is provided at the top of the movable rod 20. A ring 21 is fixedly installed at the bottom of the movable rod 20. A first spring 22 is sleeved on the outer side of the movable rod 20. The top of the first spring 22 is fixedly connected to the bottom surface of the lifting plate 8, and the bottom of the first spring 22 is fixedly connected to the top surface of the ring 21. A cover plate 23 is connected to the bottom surface of the ring 21 by a bearing. A rotating shaft 9 moves through the cover plate 23. A sealing ring 24 is installed on the bottom surface of the cover plate 23. The inner and outer diameters of the sealing ring 24 are equal to the inner and outer diameters of the barrel 4, respectively.

[0032] The transmission mechanism includes a transmission shaft 25, which is coaxially fixedly installed at the bottom end of a square rod 17. A fixing plate 26 is sleeved on the surface of the transmission shaft 25. The transmission shaft 25 is connected to the fixing plate 26 by a bearing. The fixing plate 26 is fixedly installed on the inner wall of the bracket 7. A transmission gear 27 is coaxially fixedly installed at the bottom end of the transmission shaft 25. The transmission gear 27 is alternately meshed with the fixing gear rings 28 fixedly installed on the surfaces of the two barrels 4.

[0033] The material return mechanism includes a material return cylinder 29, which is fixedly installed on the outer wall of the barrel 4. The material return cylinder 29 passes through the fixed toothed ring 28 and the support plate 5 in sequence. The material return cylinder 29 passes through a round hole opened on the carrier plate 3. The lower end of the side plate of the material return cylinder 29 is fixedly connected to one end of the through pipe 30. The other end of the through pipe 30 is fixedly connected to the bottom of the barrel 4. A solenoid valve is installed on the through pipe 30. An auger 31 is installed on the central bearing of the inner top surface of the material return cylinder 29. The auger 31 bearing passes through the bottom center of the material return cylinder 29. A connecting gear 32 is coaxially fixedly installed at the bottom end of the auger 31. The connecting gear 32 meshes with the inner toothed ring 33 fixedly installed on the bottom surface of the carrier plate 3. The upper end of the side wall of the material return cylinder 29 is fixedly connected to one end of the material return pipe 34. The other end of the material return pipe 34 is fixedly connected to the upper end of the side wall of the barrel 4.

[0034] The striking mechanism includes wedge-shaped push blocks 35 fixedly installed on the left and right sides of the carrier plate 3 and an annular plate 36 fixedly installed on the top surface of the base 1 via a mounting rod. The longitudinal centerline of the annular plate 36 is collinear with the longitudinal centerline of the support column 2, and a notch is provided on the left side of the annular plate 36. Multiple sliding rods 37 are slidably installed through the annular plate 36 in the radial direction, and the inner end of the sliding rod 37 is provided with an inclined block 38 that matches the wedge-shaped push block 35. The inclined block 38 and the wedge-shaped push block 35 are in movable contact. A second spring 39 is sleeved on the outer side of the sliding rod 37, and the outer end of the second spring 39 is fixedly connected to the inner side of the annular plate 36. The inner end of the second spring 39 is fixedly connected to the outer side of the inclined block 38. A connecting plate 40 is fixedly installed on the outer end of the sliding rod 37, and a striking rod 41 is fixedly installed on the upper end of the inner side of the connecting plate 40. The striking rod 41 slides through the upper end of the annular plate 36, and the inner end of the striking rod 41 is in movable contact with the outer wall surface of the barrel 4.

[0035] The linkage mechanism includes multiple fixed rods 42 fixedly installed on the inner side of the annular plate 36, and a residual tooth ring 43 is fixedly installed on the inner end of the fixed rod 42. The residual tooth ring 43 is movably engaged with the fixed tooth ring 28. When the fixed tooth ring 28 is engaged with the residual tooth ring 43, the rotation direction of the barrel 4 as it revolves with the carrier plate 3 is the same as the rotation direction of the fixed tooth ring 28 when the transmission gear 27 drives it.

[0036] Working principle: When in use, first add the slurry to be ground into one of the barrels 4. The weight sensor on the weighing platform 6 will monitor the weight of the slurry in real time and transmit the data to the controller. The controller will determine whether the amount of material fed meets the requirements based on the initial weight. When the equipment is started, the electric telescopic rod 11 drives the lifting plate 8 to descend, so that the rotating shaft 9 and the sand grinding disc 10 enter the barrel 4 of the processing position. At the same time, the cover plate 23 tightly fits the top of the barrel 4 under the action of the first spring 22, and the sealing ring 24 achieves a seal. The drive motor 16 starts and drives the rotating shaft 9 and the sand grinding disc 10 to rotate through the square rod 17, the sleeve 18 and the belt drive device 19. The ring 21 and the cover plate 23 rotate relative to each other to ensure effective sand grinding. During this process, the height position of the lifting plate 8, the rotating shaft 9 and the sand grinding disc 10 can be adjusted by the electric telescopic rod 11. At the same time, the cover plate 23 is always attached to the top of the barrel 4 to realize sand grinding of the slurry at different height positions. When the square rod 17 rotates, it drives the transmission gear 27 to rotate through the transmission shaft 25. At this time, the transmission gear 27 meshes with the fixed gear ring 28 on the processing position barrel 4, driving the barrel 4 to rotate in the opposite direction to the sanding disc 10, thereby improving the uniformity of sanding. When the barrel 4 rotates, the connecting gear 32 drives the auger 31 to rotate under the meshing action of the inner ring gear 33. The solenoid valve on the through pipe 30 opens, drawing the slurry and grinding media at the bottom of the barrel 4 to the return cylinder 29. After being lifted by the auger 31, it is sent back to the upper part of the barrel 4 through the return pipe 34, forming a closed loop. During this process, the weight sensor monitors the change in slurry weight in real time, which facilitates precise control of the feeding amount and the control of the grinding progress. If necessary, the cover plate 23 can be moved upward by the lifting plate 8 to add materials during the grinding process. After the barrel 4 completes the sanding operation, the electric telescopic rod 11 retracts, causing the lifting plate 8 to rise, so that the sanding disc 10 is separated from the barrel 4. The servo motor 13 starts, driving the worm gear 14 to rotate, which in turn drives the support column 2 and the carrier plate 3 to rotate through the worm wheel 15, thus realizing the revolution switching of the two barrels 4. As the processing tank 4 revolves, it immediately discharges material through the discharge pipe 44. When the tank 4 revolves past the annular plate 36, the wedge-shaped pusher 35 squeezes the inclined block 38, causing the slide rod 37 to drive the striking rod 41 to move outward and compress the second spring 39. When the wedge-shaped pusher 35 disengages from the inclined block 38, the second spring 39 resets and drives the striking rod 41 to strike the tank 4, causing the slurry adhering to the inner wall to fall off. At the same time, during the revolving process of the tank 4, the fixed toothed ring 28 will mesh with the residual toothed ring 43 to generate rotation, ensuring that the auger 31 continues to rotate, sending the residual slurry in the return cylinder 29 back to the tank 4, and enhancing the wall removal effect, ensuring effective material discharge, and feeding after the material discharge is completed. After being loaded, the barrel 4 is struck by the striking rod 41 during its revolution to the processing position. It rotates by the engagement of the fixed toothed ring 28 and the residual toothed ring 43 on its surface, ensuring that the auger 31 rotates synchronously to achieve slurry circulation and pre-treatment of the slurry. The barrel 4 rotates to the processing position, and the fixed toothed ring 28 and the residual toothed ring 43 on its surface disengage and engage with the transmission gear 27. After the switching is completed, the electric telescopic rod 11 drives the lifting plate 8 again, so that the sand grinding disc 10 enters the barrel 4 of the current processing position to carry out sand grinding operations, realizing the alternating cycle operation of the two barrels. Example

[0037] For details, please refer to [link / reference]. Figures 13-15The difference between this embodiment and embodiment one is that: the other end of the return pipe 34 is fixedly connected to one end of the ring pipe 46, and the ring pipe 46 is fixedly installed through the side wall of the barrel 4. A filter screen 47 is provided through the inner side of the ring pipe 46. The pore size of the filter screen 47 is smaller than the diameter of the grinding media and larger than the pore size of the separator on the discharge pipe 44. A guide tube 48 is installed through the other end of the ring pipe 46. The connection between the ring pipe 46 and the guide tube 48 is lower than the connection between the ring pipe 46 and the return pipe 34. A receiving box 49 installed on the wall of the barrel 4 is provided below the guide tube 48. A sliding plate 50 is slidably connected longitudinally to the inner wall of the receiving box 49, and the bottom end of the sliding plate 50 is fixedly connected to one end of the first connecting rod 51. The sliding plate 50 slides through the bottom of the receiving box 49, and a first connecting rod 51 is fixedly installed at the other end of the sliding plate 50. A rack 52 is connected to a first gear 53, which is mounted on the surface of a shaft 54. The shaft 54 ​​is bearing-mounted on the wall of the barrel 4. A second gear 55 is mounted on the shaft 54 ​​and is connected to a second rack 56. The second rack 56 is fixedly connected to one end of a second connecting rod 57, which slides through the bottom of a cylinder 58. The cylinder 58 is fixedly mounted on the side wall of the barrel 4. A push plate 59 is fixedly mounted on the other end of the second connecting rod 57 and slides longitudinally with the inner wall of the cylinder 58. A dispensing pipe 60 is fixedly connected to the upper end of the side wall of the cylinder 58 and passes through the upper end of the side wall of the barrel 4. The connection between the dispensing pipe 60 and the cylinder 58 is higher than the connection between the dispensing pipe 60 and the barrel 4.

[0038] During the sand milling operation, the barrel 4 rotates, causing the slurry and grinding media inside to mix and move. The screen at one end of the through pipe 30 will screen out the grinding media that has shrunk in size after wear, and let it enter the return cylinder 29 along with the slurry. The slurry and the worn grinding media are lifted to the return pipe 34 by the auger 31 and then enter the ring pipe 46. The filter screen 47 on the inside of the ring pipe 46 separates the slurry from the worn grinding media. The slurry enters the barrel 4 through the filter screen 47 to continue the sand milling operation, while the worn grinding media falls into the receiving box 49 through the guide tube 48. After the worn grinding media falls into the receiving box 49, its gravity will push the sliding plate 50 to move downward. The sliding plate 50 drives the first rack 52 to move downward synchronously through the first connecting rod 51. The first rack 52 meshes with the first gear 53, causing the shaft 54 ​​to drive the second gear 55 to rotate. The second gear 55 meshes with the second rack 56, driving the second connecting rod 57 to move upward. The push plate 59 at the top of the second connecting rod 57 moves upward in the cylinder 58, pressing the new grinding media stored in the cylinder 58 into the barrel 4 through the feeding pipe 60, realizing the automatic replenishment of grinding media and ensuring the stability of the total amount of media and grinding efficiency during the sand grinding process. When the barrel 4 finishes the sanding operation and switches stations, the wear grinding media in the receiving box 49 can be cleaned to prepare for the next sanding cycle.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weight-sensing-based slurry circulation dual-bucket sand mill, comprising a base (1) and a bucket body (4), characterized in that: The top surface of the base (1) is bearing-mounted with a support column (2), and the top surface of the support column (2) is fixedly mounted with a carrier plate (3). The barrel (4) is symmetrically positioned above the carrier plate (3) with the support column (2) as the center. The outer wall of the barrel (4) is mounted with a support plate (5) through a bearing. The bottom surface of the support plate (5) is connected to the weighing platform (6) mounted on the top surface of the carrier plate (3). The weighing platform (6) is equipped with a weight sensor. The top surface of the base (1) is fixedly mounted with an electric telescopic rod (11). The output end of the electric telescopic rod (11) is equipped with a lifting plate (8). The lifting plate (8) is movably mounted with a rotating shaft (9), and multiple sand grinding discs (10) are mounted on the rotating shaft (9). The base (1) is provided with a power mechanism, the lifting plate (8) is provided with a drive mechanism, the bottom surface of the lifting plate (8) is provided with a telescopic mechanism, the bottom of the drive mechanism is provided with a transmission mechanism, the barrel (4) is provided with a return mechanism that uses its rotation to circulate the slurry, and the barrel (4) is struck by a striking mechanism when it revolves with the support column (2), and the inner side of the striking mechanism is provided with a linkage mechanism for generating rotation when the barrel (4) revolves. The material return mechanism includes a material return cylinder (29), which is fixedly installed on the outer wall of the barrel (4). The material return cylinder (29) passes through the fixed toothed ring (28) and the support plate (5) in sequence. The material return cylinder (29) passes through a round hole opened on the carrier plate (3). The lower end of the side plate of the material return cylinder (29) is fixedly connected to one end of the through pipe (30), and one end of the through pipe (30) is fixedly connected to the bottom of the barrel (4). A solenoid valve is provided on the through pipe (30). (29) has an auger (31) installed on the inner top surface center bearing, and the auger (31) bearing passes through the bottom center of the return cylinder (29). The bottom end of the auger (31) is coaxially fixedly installed with a connecting gear (32), and the connecting gear (32) meshes with the inner ring gear (33) fixedly installed on the bottom surface of the carrier plate (3). The upper end of the side wall of the return cylinder (29) is fixedly connected to one end of the return pipe (34), and the other end of the return pipe (34) is fixedly connected to the upper end of the side wall of the barrel (4). One end of the through pipe (30) is provided with a screen, and the other end of the return pipe (34) is fixedly connected to one end of the ring pipe (46). The ring pipe (46) is fixedly installed through the side wall of the barrel (4). A filter screen (47) is provided through the inner side of the ring pipe (46), and a guide pipe (48) is connected to the other end of the ring pipe (46). A receiving box (49) installed on the wall of the barrel (4) is provided below the guide pipe (48). A sliding plate (50) is longitudinally slidably connected to the inner wall of the receiving box (49), and the bottom end of the sliding plate (50) is fixedly connected to one end of the first connecting rod (51). The sliding plate (50) slides through the bottom of the receiving box (49), and a first rack (52) is fixedly installed at the other end of the sliding plate (50). The first rack (52) meshes with the first... A gear (53) is mounted on the surface of a shaft (54), and the shaft (54) is mounted on the wall of the barrel (4). A second gear (55) is mounted on the shaft (54), and the second gear (55) meshes with a second rack (56). The second rack (56) is fixedly connected to one end of a second connecting rod (57), and the second connecting rod (57) slides through the bottom of a cylinder (58). The cylinder (58) is fixedly mounted on the side wall of the barrel (4). A push plate (59) is fixedly mounted on the other end of the second connecting rod (57), and the push plate (59) slides longitudinally with the inner wall of the cylinder (58). A dispensing pipe (60) is fixedly connected to the upper end of the side wall of the cylinder (58), and the dispensing pipe (60) is fixedly connected to the upper end of the side wall of the barrel (4).

2. The weight-sensing-based slurry circulation dual-bucket sand mill according to claim 1, characterized in that, A positioning rod (12) is longitudinally slidably installed on the pallet (5), and the positioning rod (12) is fixedly installed on the top surface of the carrier plate (3).

3. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 1, characterized in that, The power mechanism includes a servo motor (13), which is fixedly installed on the top surface of the base (1). The shaft end of the servo motor (13) is keyed to a worm gear (14), which meshes with a worm wheel (15), and the worm wheel (15) is fixedly installed on the surface of the support column (2).

4. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 1, characterized in that, The driving mechanism includes a drive motor (16), which is fixedly installed on the top surface of the bracket (7). The bracket (7) is fixedly installed on the top surface of the base (1). The output shaft bearing of the drive motor (16) passes through the top of the bracket (7), and a square rod (17) is coaxially fixedly installed on the shaft end of the drive motor (16). A sleeve (18) is slidably sleeved on the outside of the square rod (17), and the sleeve (18) has an outer circle and inner square structure that matches the square rod (17). The longitudinal bearing of the sleeve (18) passes through the lifting plate (8), and the sleeve (18) is connected to the top of the rotating shaft (9) through a belt drive device (19).

5. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 1, characterized in that, The telescopic mechanism includes a movable rod (20), which slides longitudinally through the lifting plate (8). A limit block is provided at the top of the movable rod (20). A ring (21) is fixedly installed at the bottom of the movable rod (20). A first spring (22) is sleeved on the outside of the movable rod (20). The top of the first spring (22) is fixedly connected to the bottom surface of the lifting plate (8), and the bottom of the first spring (22) is fixedly connected to the top surface of the ring (21). A cover plate (23) is connected to the bottom surface of the ring (21) by a bearing. A rotating shaft (9) moves through the cover plate (23). A sealing ring (24) is installed on the bottom surface of the cover plate (23).

6. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 4, characterized in that, The transmission mechanism includes a transmission shaft (25), which is coaxially fixedly installed at the bottom end of a square rod (17), and a fixing plate (26) is sleeved on the surface of the transmission shaft (25). The transmission shaft (25) is connected to the fixing plate (26) by a bearing, and the fixing plate (26) is fixedly installed on the inner wall of the bracket (7). A transmission gear (27) is coaxially fixedly installed at the bottom end of the transmission shaft (25), and the transmission gear (27) is alternately meshed with the fixing gear rings (28) fixedly installed on the surfaces of the two barrels (4).

7. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 6, characterized in that, The striking mechanism includes wedge-shaped push blocks (35) fixedly installed on the left and right sides of the carrier plate (3) and an annular plate (36) fixedly installed on the top surface of the base (1) by a mounting rod. The longitudinal centerline of the annular plate (36) is collinear with the longitudinal centerline of the support column (2), and a notch is provided on the left side of the annular plate (36). Multiple sliding rods (37) are slidably installed through the annular plate (36) in the radial direction, and the inner end of the sliding rod (37) is provided with an inclined block (38) adapted to the wedge-shaped push block (35), and the inclined block (38) and the wedge-shaped push block (35) are flexibly connected. The sliding rod (37) is fitted with a second spring (39) on its outer side, and the outer end of the second spring (39) is fixedly connected to the inner side of the annular plate (36), and the inner end of the second spring (39) is fixedly connected to the outer side of the inclined block (38). The outer end of the sliding rod (37) is fixedly installed with a connecting plate (40), and the upper end of the inner side of the connecting plate (40) is fixedly installed with a striking rod (41). The striking rod (41) slides through the upper end of the annular plate (36), and the inner end of the striking rod (41) is in movable contact with the outer wall of the barrel (4).

8. A weight-sensing-based slurry circulation dual-bucket sand mill according to claim 7, characterized in that, The linkage mechanism includes multiple fixed rods (42) fixedly installed on the inner side of the annular plate (36), and a residual tooth ring (43) is fixedly installed on the inner end of the fixed rod (42), and the residual tooth ring (43) is movably engaged with the fixed tooth ring (28).

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