A vertical centrifugal separation nano sand mill

Abstract

The present invention discloses a vertical centrifugal separation nano sand mill, which includes a grinding cylinder, a main shaft and a rotor. A main shaft is rotatably installed on the grinding cylinder, and a rotor is installed on the main shaft. A top plate is hermetically installed at the top end of the grinding cylinder. A separation mechanism is installed on the part of the main shaft between the bottom end of the top plate and the rotor. A medium dispersion mechanism is arranged below the rotor in the grinding cylinder. The medium dispersion mechanism conveys the ground materials and grinding media at the bottom upward by rotation. By driving the rotor to rotate through the main shaft, the rotor grinds the materials in the grinding cylinder. At the same time, the medium dispersion mechanism is started, so that the medium dispersion mechanism conveys the materials and grinding media accumulated at the bottom of the grinding cylinder upward, so that the materials and grinding media will not accumulate at the bottom of the grinding cylinder, improving the grinding media, making the grinding media evenly distributed in the grinding cylinder and improving the utilization rate of the grinding media.

Description

Technical Field

[0001] The present invention relates to the technical field of sand mills, and specifically to a vertical centrifugal separation nano sand mill. Background Art

[0002] As is well known, a sand mill is the most versatile, advanced, and efficient grinding equipment for materials. Its grinding chamber is the narrowest, the gap between the stirring rods is the smallest, and the grinding energy is the most concentrated. With a high-performance cooling system and an automatic control system, continuous processing and discharging of materials can be achieved, greatly improving production efficiency. Sand mills are mainly used for wet grinding of chemical liquid products. Generally, they can be divided into horizontal sand mills, basket sand mills, vertical sand mills, etc. They mainly consist of a machine body, a grinding cylinder, a sand grinding disc (stirring rod), grinding media, a motor, and a feeding pump. The feeding speed is controlled by the feeding pump. The grinding media of this equipment are generally divided into zirconia beads, glass beads, zirconium silicate beads, etc. When discharging materials, traditional sand mills usually use a sieve to screen the materials and grinding media. The grinding media and materials with larger particles are screened out through the sieve and re-entered into the grinding cylinder, while the materials with smaller particles are discharged from the grinding cylinder through the sieve, and thus the materials after grinding and screening are obtained.

[0003] For example, a nano sand mill with efficient centrifugal separation disclosed in the patent with publication number CN117753517A and publication date of March 26, 2024. This invention relates to the technical field of nano sand mills and discloses a nano sand mill with efficient centrifugal separation, including a machine body, a fixed frame is installed on the machine body, a driving motor is fixedly connected to the fixed frame, the output end of the driving motor is connected to a driving shaft, one end of the driving shaft is fixedly connected to a pin rotor, a grinding tank is installed outside the pin rotor, and a partition plate movably connected to the grinding tank is rotatably connected outside the pin rotor. A feeding member is installed on one side of the partition plate, multiple groups of discharge pipes arranged in a circular pattern are connected to the feeding member, several groups of first discharge holes are opened on the discharge pipes, and a discharging member for managing the discharging of the discharge pipes is installed inside the discharge pipes. By setting the discharge pipes and the discharging member for managing the discharging of the discharge pipes, the materials are evenly distributed in the grinding tank, solving the problem in the prior art that the feeding port for material transportation is single and located on one side of the grinding tank, resulting in poor feeding uniformity and affecting the grinding efficiency of the materials.

[0004] The deficiencies of the prior art are that when traditional vertical sand mills grind materials, the ground materials and grinding media are prone to concentrate at the bottom of the grinding cylinder due to gravity, resulting in low utilization rate of the grinding media, and thus affecting the grinding quality and efficiency of the materials. Summary of the Invention

[0005] The purpose of the present invention is to provide a vertical centrifugal separation nano sand mill to solve the technical problems in the related art.

[0006] To achieve the above object, the present invention provides the following technical solution: a vertical centrifugal separation nano sand mill, comprising a grinding cylinder, a main shaft and a rotor. A main shaft is rotatably installed on the grinding cylinder, and a rotor is installed on the main shaft. A top plate is hermetically installed at the top end of the grinding cylinder. A separation mechanism is installed on the part of the main shaft between the bottom end of the top plate and the rotor. A medium dispersion mechanism is arranged below the rotor in the grinding cylinder, and the medium dispersion mechanism conveys the ground materials and grinding media at the bottom upward by rotation.

[0007] As described above, the medium dispersion mechanism includes a medium dispersion plate. A medium dispersion plate is rotatably installed at the bottom end of the grinding cylinder. A plurality of protruding parts are evenly arranged along the circumferential direction of the medium dispersion plate. Each of the protruding parts is arc-shaped and is arranged clockwise along the rotation direction of the medium dispersion plate.

[0008] As described above, the top end of the medium dispersion plate is connected to the bottom end of the main shaft.

[0009] As described above, the separation mechanism includes a first separator. A first separator is installed on the part of the main shaft between the bottom end of the top plate and the rotor. The first separator includes an annular structure with an annular hollow groove inside. A plurality of arc-shaped through grooves are evenly formed in the outer wall of the annular structure along its circumferential direction. An arc-shaped plate is slidably installed in each of the arc-shaped through grooves. The gap between the arc-shaped plate and the side wall of the arc-shaped through groove is the feed port, and the size of the feed port of the first separator is adjusted by adjusting the position of the arc-shaped plate in the arc-shaped through groove.

[0010] As described above, a sealing ring is installed on the outer wall of the top side of the first separator, and the sealing ring is slidably and hermetically connected to the inner wall of the grinding cylinder.

[0011] As described above, the top end of each of the arc-shaped plates penetrates through the arc-shaped through groove and is installed with a first triangular block, and each of the arc-shaped plates and the inner wall of the arc-shaped through groove are connected by a first elastic member.

[0012] As described above, a first ring is installed at the top end of each of the first triangular blocks. A second ring is installed inside the first ring at the top end of each of the first triangular blocks. Two vertically arranged first slide rails are symmetrically installed about the main shaft on the outside of the first ring at the top end of the first separator. Two vertically arranged second slide rails are symmetrically installed about the main shaft on the inside of the second ring at the top end of the first separator. A first slider is slidably installed in each of the two first slide rails, and both of the two first sliders are connected to the first ring. A second slider is slidably installed in each of the two second slide rails, and both of the two second sliders are connected to the second ring. A plurality of second triangular blocks that are in contact with the first triangular blocks are uniformly arranged along the circumferential direction at the bottom end of the first ring. A plurality of third triangular blocks that are in contact with the first triangular blocks are uniformly arranged along the circumferential direction at the bottom end of the second ring. Each of the second triangular blocks is located on one side of the corresponding first triangular block, and each of the third triangular blocks is located on the other side of the corresponding first triangular block. The two first sliders and the two second sliders are connected to the top end of the first separator through second elastic members.

[0013] As described above, a first driving member is provided on the top plate. A first pressing member is installed at the output end of the first driving member. The first pressing member and the top end of the first ring are in the same vertical direction.

[0014] As described above, a second driving member is provided on the side of the top plate where the first driving member is located. A second pressing member is installed at the output end of the second driving member. The second pressing member and the top end of the second ring are in the same vertical direction.

[0015] As described above, the separation mechanism further includes a second separator. The second separator is installed inside the first separator. The second separator is a planar spiral plate that is wound step by step from one inner end to the outer end.

[0016] The beneficial effects of the present invention are as follows: The main shaft drives the rotor to rotate, so that the rotor grinds the materials in the grinding cylinder. At the same time, the medium dispersion mechanism is started, so that the medium dispersion mechanism conveys the materials and grinding media accumulated at the bottom of the grinding cylinder upward, so that the materials and grinding media will not accumulate at the bottom of the grinding cylinder, improving the grinding media, making the grinding media evenly distributed in the grinding cylinder, and improving the utilization rate of the grinding media. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 Schematic diagram of the partial three-dimensional structure of another embodiment provided by the present invention;

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the first internal view;

[0021] Figure 4 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the second internal view;

[0022] Figure 5 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the third internal view;

[0023] Figure 6 For the present invention Figure 3 Schematic diagram of the sectional structure;

[0024] Figure 7 For the present invention Figure 3 Front view;

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the sectional structure in the A-A direction;

[0026] Figure 9 For the present invention Figure 7 Schematic diagram of the sectional structure in the B-B direction;

[0027] Figure 10 Schematic diagram of the three-dimensional structure of the second separator of the present invention;

[0028] Figure 11 Schematic diagram of the three-dimensional structure of the positive angle blade of the present invention;

[0029] Figure 12 Schematic diagram of the three-dimensional structure of the radial blade of the present invention;

[0030] Figure 13 Schematic diagram of the three-dimensional structure of the negative angle blade of the present invention;

[0031] Figure 14 Schematic diagram of the three-dimensional structure of the medium dispersion plate and the convex part of the present invention;

[0032] Figure 15 Schematic diagram of the partial sectional structure of the rotor composite structure of the present invention.

[0033] Explanation of reference numerals:

[0034] 1. Grinding cylinder; 2. Main shaft; 3. Rotor; 311. Rod pin type; 312. Turbine type; 4. Top plate; 5. First separator; 6. Arc-shaped through groove; 7. Arc-shaped plate; 8. Feed inlet; 9. Feed pipe; 10. Medium dispersion plate; 11. Protrusion; 12. Frame; 17. Discharge port; 18. Discharge chute; 19. Discharge pipe; 20. Second separator; 201. Positive angle blade; 202. Radial blade; 203. Negative angle blade; 21. Sealing ring; 22. First triangular block; 23. First elastic member; 24. First ring; 25. Second ring; 26. First slide rail; 27. Second slide rail; 28. First slider; 29. Second slider; 30. Second triangular block; 31. Third triangular block; 32. Second elastic member; 33. First driving member; 34. First pressing member; 35. Second driving member; 36. Second pressing member; 37. Ball; 41. First rack; 42. Second rack; 43. Connecting rod; 44. Driving gear; 45. Third ring; 46. Fourth ring; 47. Flat groove; 48. Positioning rod; 49. Third elastic member; 50. Arc-shaped groove; 51. Arc-shaped baffle plate. Detailed implementation manner

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the attached Figure 1 to the attached Figure 15 The present invention will be further introduced in detail.

[0036] An embodiment provided by the present invention relates to a vertical centrifugal separation nano sand mill, including a grinding cylinder 1, a main shaft 2 and a rotor 3. A main shaft 2 is rotatably installed on the grinding cylinder 1, and a rotor 3 is installed on the main shaft 2. A top plate 4 is hermetically installed at the top of the grinding cylinder 1. A separation mechanism is installed on the part of the main shaft 2 between the bottom of the top plate 4 and the rotor 3. A medium dispersion mechanism is arranged below the rotor 3 in the grinding cylinder 1. The medium dispersion mechanism conveys the materials and grinding media at the bottom upward by rotation.

[0037] Specifically, the grinding cylinder 1 is a barrel structure with a hollow middle. The grinding cylinder 1 is used to hold materials. An inlet pipe 9 is installed at the bottom end of the grinding cylinder 1. The inlet pipe 9 is used to transport materials into the interior of the grinding cylinder 1. The medium dispersion mechanism includes a medium dispersion plate 10. A medium dispersion plate 10 is rotatably installed at the bottom end of the grinding cylinder 1. A plurality of protrusions 11 are evenly arranged along the circumferential direction of the medium dispersion plate. Each protrusion 11 is arc-shaped and is arranged clockwise / counterclockwise along the rotation direction of the medium dispersion plate 10. The top end of the medium dispersion plate 10 is connected to the bottom end of the main shaft 2. The main shaft 2 drives the medium dispersion plate 10 to rotate. The medium dispersion plate 10 is used to guide the moving directions of the grinding medium and the materials. When it is necessary to grind the materials, the materials are transported to the bottom of the grinding cylinder 1 through the inlet pipe 9. The main shaft 2 is driven to rotate. The main shaft 2 drives the rotor 3 (the rotor 3 can be a grinding rotor 3 in different forms such as a turbine type 312, a rod pin type 311, a disc type, etc. The form of the rotor 3 is adjusted according to various different grinding objects (i.e., materials) so that the materials can be ground more evenly) to rotate. The grinding medium and the materials are mixed by the rotor 3. The grinding medium is continuously impacted, rubbed, and extruded under the centrifugal force generated by the high-speed rotation of the rotor 3, so that extrusion force, shear force, and impact force are generated between the materials and the grinding medium, breaking the agglomeration between the materials and reducing the fineness, so as to achieve the purpose of reducing the particle size of the materials. At the same time, the main shaft 2 drives the medium dispersion plate 10 to rotate. Since the particle size of the materials is small, the medium dispersion plate 10 generates negative pressure when rotating to suck out the materials, while the grinding medium is left in the grinding cylinder 1. The materials are transported upward along the inner wall of the grinding cylinder 1 with the eddy current generated when the main shaft 2, the rotor 3, and the medium dispersion plate 10 rotate, so that the materials and the grinding medium will not accumulate at the bottom of the grinding cylinder 1, making the distribution of the grinding medium in the grinding cylinder uniform and improving the utilization rate of the grinding medium. The deficiencies of the prior art are that when the traditional vertical sand mill grinds materials, the ground materials and the grinding medium are easily concentrated at the bottom of the grinding cylinder 1 due to gravity, resulting in low utilization rate of the grinding medium, and further affecting the grinding quality and efficiency of the materials. In this embodiment, the main shaft 2 drives the rotor 3 to rotate, so that the rotor 3 grinds the materials in the grinding cylinder 1. At the same time, the medium dispersion mechanism is started, so that the medium dispersion mechanism transports the materials and the grinding medium accumulated at the bottom of the grinding cylinder 1 upward, so that the materials and the grinding medium will not accumulate at the bottom of the grinding cylinder 1, improving the utilization rate of the grinding medium, making the distribution of the grinding medium in the grinding cylinder uniform, and improving the utilization rate of the grinding medium.

[0038] Preferably, refer to Figure 15, the rotor 3 is arranged in a composite structure. The part of the rotor 3 located at the top of the medium dispersion plate 10 is of a rod pin type 311 structure, and the middle part of the rotor 3 is of a turbine type 312 structure. Specifically, after the rotor 3 is arranged in a composite structure, when the rotor 3 rotates and starts, the torque of the rotor 3 can be reduced. And when the rod pin type 311 structure of the rotor 3 rotates, the rod pin type 311 structure can drive the grinding medium at the bottom end of the grinding cylinder 1 to rotate, so that the grinding medium can rotate along the inner wall of the grinding cylinder 1, preventing the grinding medium from accumulating at the bottom end of the grinding cylinder 1, making the grinding medium evenly distributed in the grinding cylinder, and improving the utilization rate of the grinding medium.

[0039] Furthermore, the separation mechanism includes a first separator 5. The first separator 5 includes an annular structure with an annular hollow groove inside. A plurality of arc-shaped through grooves 6 are evenly arranged on the outer wall of the annular structure along its circumferential direction. An arc-shaped plate 7 is slidably installed in each of the arc-shaped through grooves 6. The feeding port 8 is between the arc-shaped plate 7 and the side wall of the arc-shaped through groove 6. The size of the feeding port 8 of the first separator 5 is adjusted by adjusting the position of the arc-shaped plate 7 in the arc-shaped through groove 6.

[0040] A second separator 20 is installed in the first separator 5. The second separator 20 is a planar spiral plate wound step by step from one inner end to the outer end. The spiral pitch between the spirals of the second separator 20 gradually decreases from the inner end to the outer end. The second separator 20 can also be assembled with different separation forms such as a spiral structure plate, a positive angle blade 201, a radial blade 202, a negative angle blade 203, and a wedge-shaped structure, and different second separators 20 can be replaced based on different grinding objects.

[0041] Specifically, when grinding treatment is required for materials, the materials are conveyed to the bottom of the grinding cylinder 1 through the feeding pipe 9. The main shaft 2 is driven to rotate by a driving part (the driving part is a device capable of driving the main shaft 2 to rotate forward and backward, preferably a permanent magnet motor). The main shaft 2 drives the rotor 3 (the rotor 3 can be a grinding rotor 3 in different forms such as a turbine type, a rod pin type, a disc type, etc. The form of the rotor 3 is adjusted according to various different grinding objects (i.e., materials) so that the materials can be ground more evenly) to rotate. The grinding medium and the materials are mixed by the rotor 3. The materials are continuously impacted, rubbed and extruded under the centrifugal force generated by the high-speed rotation of the rotor 3, so that extrusion force, shear force and impact force are generated between the materials and the grinding medium, breaking the agglomeration between the materials and crushing the fineness to achieve the purpose of reducing the particle size of the materials. At the same time, the medium dispersion plate 10 is driven to rotate by the main shaft 2. Since the particle size of the materials is small, the medium dispersion plate 10 generates negative pressure when rotating to suck out the materials, while the grinding medium is left in the grinding cylinder 1. The materials move along the inner wall of the grinding cylinder 1 to the position of the first separator 5 along with the eddy current generated when the main shaft 2, the rotor 3 and the medium dispersion plate 10 rotate. The materials are sucked into the first separator 5 through the feeding port 8. The materials and the grinding medium with larger particle sizes enter the grinding cylinder 1 from the discharge port of the first separator 5 under the action of centrifugal force, while the materials with smaller particle sizes are sucked into the spiral gap (i.e., the arc-shaped spiral path) of the second separator 20, so that the materials with smaller particle sizes enter the inside of the second separator 20. The suction force is provided for the discharge pipe 19 by a suction device. The materials enter the discharge chute 18 from the discharge port 17 on the main shaft 2, and then are sucked out of the grinding cylinder 1 from the discharge chute 18 and the discharge pipe 19. The discharge path of the materials is the feeding port 8 - the first separator 5 - the second separator 20 - the discharge port 17 - the discharge chute 18 - the discharge pipe 19, so that the materials can be screened and discharged after grinding is completed. That is, the grinding medium and the ground materials are separated through the feeding port 8 of the first separator 5. The ground materials enter the first separator 5 through the feeding port 8. The materials with larger mass (or volume) enter the grinding cylinder 1 from the outside of the first separator 5 for re-grinding treatment. The materials in the first separator 5 move to the inside of the second separator 20 along the spiral path of the second separator 20, and then the materials are discharged from the second separator 20 through the discharge port 17. And because the spiral pitch between the spirals of the second separator 20 gradually decreases from the inner end to the outer end, it has a better suction effect, so that the materials can be quickly discharged from the second separator 20 after entering the inside of the second separator 20, thus completing the further separation of the materials and the grinding medium. Since the number of the spiral channels of the second separator 20 is limited, the suction force of the discharge pipe 19 on the materials is large, and the materials will not be dispersed like on a sieve, so that the suction force of the discharge pipe 19 is evenly distributed in the spiral channels, greatly reducing the probability of blockage of the second separator 20.Moreover, the suction force in the discharge pipe 19 will generate a vortex in the spiral channel of the second separator 20, thereby increasing the suction force and further reducing the clogging probability of the second separator 20. The centers of the arc-shaped through groove 6 and the arc-shaped plate 7 coincide with the center of the first separator 5. The arc-shaped through groove 6 is arranged on the annular side wall of the first separator 5. By adjusting the size of the feed port 8 of the first separator 5, the feed amount of the first separator 5 can be controlled, that is, essentially the overall grinding rhythm can be controlled. By synchronously driving the sliding of the arc-shaped plate 7 in the arc-shaped through groove 6, when the arc-shaped plate 7 moves to a suitable position (that is, when the gap between the arc-shaped plate 7 and the side wall of the arc-shaped through groove 6 is adapted to the particle size of the material after grinding), the size of the feed port 8 of the first separator 5 is adjusted.

[0042] Furthermore, a sealing ring 21 is installed on the outer wall of the top side of the first separator 5, and the sealing ring 21 is slidably and sealingly connected between the inner wall of the grinding cylinder 1. Specifically, when the vortex generated by the rotation of the material along with the main shaft 2, the rotor 3 and the medium dispersion plate 10 reaches the position of the first separator 5 along the inner wall of the grinding cylinder 1, the sealing treatment is carried out between the first separator 5 and the inner wall of the grinding cylinder 1 through the sealing ring 21, so that the material enters the first separator 5 from the bottom end of the sealing ring 21, and the material can be guided, which is convenient for the material to enter the first separator 5 from the grinding cylinder 1.

[0043] Further, the top ends of the arc-shaped plates 7 all penetrate through the arc-shaped through grooves 6 and are each provided with a first triangular block 22. Between the inner walls of each of the arc-shaped plates 7 and the arc-shaped through grooves 6, they are each connected by a first elastic member 23. Above each of the first triangular blocks 22, a first ring 24 is installed. Above each of the first triangular blocks 22 and inside the first ring 24, a second ring 25 is installed. On the top end of the first separator 5, symmetrically about the main shaft 2 and outside the first ring 24, two vertically arranged first slide rails 26 are installed. On the top end of the first separator 5, symmetrically about the main shaft 2 and inside the second ring 25, two vertically arranged second slide rails 27 are installed. In each of the two first slide rails 26, a first slider 28 is slidably installed, and both of the two first sliders 28 are connected to the outer wall of the first ring 24. In each of the two second slide rails 27, a second slider 29 is slidably installed, and both of the two second sliders 29 are connected to the outer wall of the second ring 25. Along the circumferential direction of the bottom end of the first ring 24, a plurality of second triangular blocks 30 that are in mutual abutment with the first triangular blocks 22 are evenly arranged. Along the circumferential direction of the bottom end of the second ring 25, a plurality of third triangular blocks 31 that are in mutual abutment with the first triangular blocks 22 are evenly arranged. Each of the second triangular blocks 30 is located on one side of the corresponding first triangular block 22, and each of the third triangular blocks 31 is located on the other side of the corresponding first triangular block 22 (that is, the width of each of the first triangular blocks 22 is very large, spanning the first ring 24 (or the second triangular block 30) and the second ring 25 (the third triangular block 31), so that the second triangular block 30 abuts against the inclined surface on one side of the first triangular block 22, and the third triangular block 31 abuts against the inclined surface on the other side of each of the first triangular blocks 22). Between the two first sliders 28 and the two second sliders 29 and the top end of the first separator 5, they are connected by second elastic members 32. On the top plate 4, a first driving member 33 is provided, and the output end of the first driving member 33 is installed with a first pressing member 34. The first pressing member 34 and the top end of the first ring 24 are in the same vertical direction. On the top plate 4, on the side of the first driving member 33, a second driving member 35 is provided, and the output end of the second driving member 35 is installed with a second pressing member 36. The second pressing member 36 and the top end of the second ring 25 are in the same vertical direction.

[0044] Specifically, (1) when the second elastic member 32 (the second elastic member 32 is a member capable of telescopic reset, preferably a spring) is in its original length under the extrusion of the first ring 24, the first slider 28, the second ring 25, the second slider 29, the second triangular block 30, and the third triangular block 31, the first triangular block 22 is an equilateral triangular block, the second triangular block 30 and the third triangular block 31 are right-angled triangular blocks, and the two hypotenuses of the same first triangular block 22 are respectively abutted against the second triangular block 30 and the third triangular block 31, so that the second triangular block 30 and the third triangular block 31 perform positioning operations on the first triangular block 22, preventing the first triangular block 22 from sliding, and further positioning the arc plate 7 in the arc-shaped through groove 6, so that the feed port 8 between the arc plate 7 and the side wall of the arc-shaped through groove 6 remains stable; (2) when it is necessary to increase the opening of the feed port 8, start the first driving member 33 (the first driving member 33 is a device capable of linear reciprocating motion, such as a cylinder, an electric push rod, and a hydraulic cylinder, etc., which are structures capable of linear reciprocating motion) to drive the first pressing member 34 to press against the outer wall of the top end of the first ring 24. Since the main shaft 2 drives the first separator 5 to rotate continuously, the first pressing member 34 is always in frictional contact with the top end of the first ring 24, so that the first pressing member 34 pushes the first ring 24 to slide towards the end close to the first separator 5 (since the two first sliders 28 are both connected to the outer wall of the first ring 24, the first ring 24 is circumferentially restricted by the first sliders 28, so that the first ring 24 can only slide linearly in the first slide rail 26 following the first sliders 28), causing the first ring 24 to drive the first slider 28 to slide towards the end close to the first separator 5 in the first slide rail 26. The first slider 28 exerts a certain extrusion on the second elastic member 32, causing the second elastic member 32 to be in a compressed state. The first ring 24 abuts against the inclined surface of the second triangular member through the inclined surface of the first triangular member, so that the second triangular member pushes the first triangular member and the arc plate 7 to slide towards the inner end of the arc-shaped through groove 6, thereby increasing the feed port 8 between the arc plate 7 and the side wall of the arc-shaped through groove 6. The arc plate 7 exerts a certain extrusion operation on the first elastic member 23 (the first elastic member 23 is a member capable of telescopic reset, preferably a spring), causing the first elastic member 23 to be in a compressed state. At the same time, the first triangular member pushes the third triangular member and the second ring 25 to slide towards the end away from the first separator 5, causing the second ring 25 to stretch the second elastic member 32 at its bottom end, so that the second elastic member 32 at the bottom end of the second ring 25 is in a stretched state;(3) When it is necessary to reduce the opening of the feed inlet 8, start the second driving member 35 (the second driving member 35 is a device capable of performing linear reciprocating motion, such as: a cylinder, an electric push rod, a hydraulic cylinder, etc., which are structures capable of performing linear reciprocating motion), so that it drives the second pressing member 36 to press against the outer wall of the top end of the second ring 25. Since the main shaft 2 drives the first separator 5 to rotate all the time, the second pressing member 36 has frictional contact with the top end of the second ring 25 all the time, so that the second pressing member 36 pushes the second ring 25 to slide towards the end close to the first separator 5 (since both second sliders 29 are connected to the outer wall of the second ring 25, the second ring 25 is circumferentially restricted by the second sliders 29, so that the second ring 25 can only slide linearly in the second slide rail 27 following the second sliders 29), so that the second ring 25 drives the second sliders 29 to slide towards the end close to the first separator 5 in the second slide rail 27. The second sliders 29 exert a certain extrusion on the second elastic member 32, so that the second elastic member 32 is in a compressed state. The second ring 25 is in mutual abutment with the inclined surface of the first triangular member through the inclined surface of the third triangular member, so that the third triangular member pushes the first triangular member and the arc-shaped plate 7 to slide towards the outer end of the arc-shaped through groove 6, thereby reducing the feed inlet 8 between the arc-shaped plate 7 and the side wall of the arc-shaped through groove 6. The arc-shaped plate 7 performs a certain stretching operation on the first elastic member 23 (the first elastic member 23 is a component capable of telescopic reset, preferably a spring), so that the first elastic member 23 is in a stretched state. At the same time, the first triangular member pushes the second triangular member and the first ring 24 to slide towards the end away from the first separator 5, so that the first ring 24 exerts a certain stretching on the second elastic member 32 at its bottom end, so that the second elastic member 32 at the bottom end of the first ring 24 is in a stretched state; both the first ring 24 and the second ring 25 are reset by the elastic force provided by the second elastic member 32. By adjusting the distance between the first ring 24 (or the second ring 25) and the first separator 5, the second triangular member (or the third triangular member) pushes the first triangular member, thereby adjusting the size of the feed inlet 8 between the arc-shaped plate 7 and the side wall of the arc-shaped through groove 6, so that the material screened from the first separator 5 reaches the standard value, and the size of the feed inlet 8 of the first separator 5 can be adjusted when the main shaft 2 drives the first separator 5 to rotate at a high speed, so that the ground material reaches the grinding standard.

[0045] Preferably, a ball 37 is rotatably installed in each of the first pressing member 34 and the second pressing member 36. Annular grooves are formed at the top ends of the first ring 24 and the second ring 25. The balls 37 in the first pressing member 34 and the second pressing member 36 are respectively matched with the annular grooves on their corresponding first ring 24 and second ring 25.

[0046] Specifically, when the first pressing member 34 presses against the first ring 24, or when the second pressing member 36 presses against the second ring 25, since the main shaft 2 drives the first separator 5 to rotate continuously, the first separator 5 drives the first ring 24 and the second ring 25 to rotate, causing the first pressing member 34 and the first ring 24 to be frictionally pressed together, or the second pressing member 36 and the second ring 25 to be frictionally pressed together, resulting in frictional damage to one end of the first pressing member 34, the first ring 24, the second pressing member 36, and the second ring 25. By providing balls 37 at the bottom ends of the first pressing member 34 and the second pressing member 36, the frictional abutment between the first pressing member 34 and the first ring 24 and the frictional abutment between the second pressing member 36 and the second ring 25 are converted into rolling abutment, reducing the abutment damage between the first pressing member 34 and the first ring 24 and between the second pressing member 36 and the second ring 25.

[0047] Preferably, on the top end of the first separator 5, an arc surface groove 50 is provided on each side of each of the arc-shaped through grooves 6. An arc surface baffle 51 is slidably installed in each of the arc surface grooves 50. The end of each arc surface baffle 51 is connected to the top side of its corresponding arc-shaped plate 7.

[0048] Specifically, when the arc-shaped plate 7 slides in the arc-shaped through groove 6, the arc-shaped plate 7 drives the arc surface baffle 51 to slide in the arc surface groove 50, so that the arc surface baffle 51 seals the arc-shaped through groove 6, preventing the material from entering the cavity between the top plate 4 and the first separator 5 through the arc-shaped through groove 6.

[0049] In another embodiment provided by the present invention, two first racks 41 are symmetrically installed on the part of the first ring 24 between the first slide rail 26 and the second slide rail 27. Two second racks 42 are symmetrically installed on the part of the second ring 25 between the first slide rail 26 and the second slide rail 27. Two connecting rods 43 are symmetrically installed between the first slide rail 26 and the second slide rail 27. A transmission gear 44 is rotatably installed between two connecting rods 43 on the same side. The first rack 41 and the second rack 42 are both meshed with the transmission gear 44. A third ring 45 is installed at the top end of the first rack 41. A fourth ring 46 is installed at the top end of the second rack 42. In this embodiment, the annular grooves are provided on the third ring 45 and the fourth ring 46, and are no longer provided on the first ring 24 and the second ring 25. The balls 37 are arranged in cooperation with the annular grooves on the third ring 45 and the fourth ring 46.

[0050] Specifically, when the second triangular member pushes the first triangular member to slide, the third triangular member has a certain blocking effect on the sliding of the first triangular member. When the third triangular member pushes the first triangular member to slide, the second triangular member also has a certain blocking effect on the sliding of the first triangular member. (1) After the material is discharged from the grinding cylinder 1 and the particle size of the material is small, it is necessary to increase the opening of the feed port 8. Start the first driving member 33 to drive the first pressing member 34 and the ball 37 to press against the annular groove at the top of the third ring 45. Since the main shaft 2 drives the first separator 5 to rotate continuously, the first pressing member 34 and the ball 37 are in rolling contact with the top of the third ring 45, so that the first pressing member 34 pushes the third ring 45 to slide towards the end close to the first separator 5. The third ring 45 drives the first rack 41 to slide towards the end close to the first separator 5. The first rack 41 drives the first ring 24 to slide towards the end close to the first separator 5. The first ring 24 drives the first slider 28 to slide towards the end close to the first separator 5 in the first slide rail 26. The first slider 28 exerts a certain extrusion on the second elastic member 32, so that the second elastic member 32 at the bottom of the first slider 28 is in a compressed state. The first ring 24 is in mutual abutment with the inclined surface of the first triangular member through the inclined surface of the second triangular member, so that the second triangular member pushes the first triangular member and the arc-shaped plate 7 to slide towards the inner end of the arc-shaped through groove 6, thereby increasing the feed port 8 between the arc-shaped plate 7 and the side wall of the arc-shaped through groove 6. The arc-shaped plate 7 exerts a certain extrusion operation on the first elastic member 23 (the first elastic member 23 is a component that can be telescoped and reset, preferably a spring), so that the first elastic member 23 is in a compressed state. At the same time, since the first rack 41 and the transmission gear 44 are meshed with each other, the first rack 41 drives the transmission gear 44 to rotate during the process of sliding towards the end close to the first separator 5. The transmission gear 44 drives the second rack 42 to slide towards the end away from the first separator 5. The second rack 42 drives the second ring 25 and the fourth ring 46 to slide towards the end away from the first separator 5, so that the third triangular member and the first triangular member are separated from each other, so that the third triangular member will not block the second triangular member when it pushes the first triangular member to move. At the same time, the second rack 42 drives the second ring 25 to slide towards the end away from the first separator 5. The second ring 25 exerts a certain stretching on the second elastic member 32 at its bottom, so that the second elastic member 32 at the bottom of the second ring 25 is in a stretched state;(2) When the material is discharged from the grinding cylinder 1 and the particle size of the material is relatively large, it is necessary to reduce the opening of the feed port 8. Start the second driving member 35 (the second driving member 35 is a device capable of linear reciprocating motion, such as a cylinder, an electric push rod, a hydraulic cylinder, etc., which are structures capable of linear reciprocating motion) to drive the second pressing member 36 and the ball 37 to press against the annular groove at the top of the fourth ring 46. Since the main shaft 2 drives the first separator 5 to rotate continuously, the second pressing member 36 and the ball 37 are in rolling contact with the top of the fourth ring 46, so that the second pressing member 36 pushes the fourth ring 46 to slide towards the first separator 5. The fourth ring 46 drives the second rack 42 to slide towards the first separator 5. The second rack 42 drives the second ring 25 to slide towards the first separator 5. The second ring 25 drives the second slider 29 to slide towards the first separator 5 in the second slide rail 27. The second slider 29 compresses the second elastic member 32 to a certain extent, so that the second elastic member 32 at the bottom of the second slider 29 is in a compressed state. The second ring 25 is in contact with the inclined surface of the third triangular member and the inclined surface of the first triangular member, so that the third triangular member pushes the first triangular member and the arc plate 7 to slide towards the outer end of the arc-shaped through groove 6, thereby reducing the feed port 8 between the arc plate 7 and the side wall of the arc-shaped through groove 6. The arc plate 7 stretches the first elastic member 23 (the first elastic member 23 is an element capable of telescopic reset, preferably a spring) to a certain extent, so that the first elastic member 23 is in a stretched state. At the same time, since the second rack 42 and the transmission gear 44 are meshed with each other, when the second rack 42 slides towards the first separator 5, it drives the transmission gear 44 to rotate. The transmission gear 44 drives the first rack 41 to slide away from the first separator 5. The first rack 41 drives the first ring 24 and the third ring 45 to slide away from the first separator 5, so that the second triangular member and the first triangular member are separated from each other, so that the second triangular member will not block the first triangular member when the third triangular member pushes the first triangular member to move. At the same time, the first rack 41 drives the first ring 24 to slide away from the first separator 5. The first ring 24 stretches the second elastic member 32 at its bottom to a certain extent, so that the second elastic member 32 at the bottom of the first ring 24 is in a stretched state;When resetting, both the first ring 24 and the second ring 25 are reset by the elastic force provided by the second elastic member 32. However, it is possible that the elastic force of the second elastic member 32 is insufficient to ensure the reset of the first ring 24 and the second ring 25 (that is, when the first slider 28 and the first slide rail 26 are stuck or the second slide rail 27 and the second slider 29 are stuck): when the resilience of the second elastic member 32 is insufficient to push the first ring 24 back to its original position, the second driving member 35 is activated to drive the second pressing member 36 and the ball 37 to press against the annular groove at the top of the fourth ring 46, so that the fourth ring 46 drives the second rack 42 to slide towards the end close to the first separator 5, and the second rack 42 drives the first rack 41 and the first ring 24 to slide through the transmission gear 44, so as to solve the problem that the first ring 24 cannot be reset; when the resilience of the second elastic member 32 is insufficient to push the second ring 25 back to its original position, the first driving member 33 is activated to drive the first pressing member 34 and the ball 37 to press against the annular groove at the top of the third ring 45, so that the third ring 45 drives the first rack 41 to slide towards the end close to the first separator 5, and the first rack 41 drives the second rack 42 and the second ring 25 to slide through the transmission gear 44, so as to solve the problem that the first ring 24 or the second ring 25 cannot be reset when the first slider 28 and the first slide rail 26 are stuck or the second slide rail 27 and the second slider 29 are stuck.;

[0051] In another preferred embodiment provided by the present invention, preferably, two flat grooves 47 are symmetrically formed on the outer side of the first slide rail 26 at the top of the first separator 5. A positioning rod 48 is slidably installed in each of the two flat grooves 47. Each of the two positioning rods 48 and the corresponding flat groove 47 are connected by a third elastic member 49. The ends of the two first sliders 28 close to the positioning rod 48 and the tops of the two positioning rods 48 are wedge-shaped surfaces that slope upward from the side close to the main shaft 2 to the side away from the main shaft 2.

[0052] Specifically, (1) when the second triangular block 30 and the third triangular block 31 perform a positioning operation on the first triangular block 22, the first triangular block 22 will not slide. Furthermore, when positioning the arc-shaped plate 7 in the arc-shaped through groove 6, under the pushing action of the third elastic member 49 (the third elastic member 49 is a component capable of telescopic reset, preferably a spring), the wedge surfaces on the positioning rod 48 and the first slider 28 abut against each other, so that the first slider 28 will not slide in the first slide rail 26. Furthermore, a certain positioning operation is performed on the first slider 28, and the second slider 29 can be positioned synchronously by positioning the first slider 28; (2) when the first driving member 33 drives the first pressing member 34 and the ball 37 to be pressed against the annular groove at the top of the third ring 45, the first pressing member 34 pushes the third ring 45 to slide towards the end close to the first separator 5. The third ring 45 drives the first rack 41 to slide towards the end close to the first separator 5. The first rack 41 drives the first ring 24 to slide towards the end close to the first separator 5. The first ring 24 drives the first slider 28 to slide towards the end close to the first separator 5 in the first slide rail 26. The first slider 28 pushes the positioning rod 48 to slide away from the first separator 5, so that the first slider 28 abuts against the outer wall of the positioning rod 48, and the positioning rod 48 releases the positioning of the first slider 28. At the same time, since the second elastic member 32 is in a compressed state, the second elastic member 32 provides an elastic force to the bottom end of the first ring 24. The top end of the first ring 24 is subjected to the extrusion force applied by the first driving member 33 and the first pressing member 34 to the third ring 45 and the first rack 41, so that the first ring 24 will not slide, realizing the positioning operation of the first ring 24.

[0053] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above 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 vertical centrifugal separation nano sand mill, comprising a grinding cylinder, a main shaft and a rotor. A main shaft is rotatably installed on the grinding cylinder, and a rotor is installed on the main shaft. A top plate is hermetically installed at the top end of the grinding cylinder. A separation mechanism is installed on the part of the main shaft between the bottom end of the top plate and the rotor. It is characterized in that, A medium dispersion mechanism is arranged below the rotor inside the grinding cylinder. The medium dispersion mechanism conveys the ground materials and grinding media at the bottom upward by rotation. The separation mechanism includes a first separator. A first separator is installed on the part of the main shaft between the bottom end of the top plate and the rotor. The first separator includes an annular structure with an annular hollow groove inside. A plurality of arc-shaped through grooves are evenly formed in the circumferential direction on the outer wall of the annular structure. An arc-shaped plate is slidably installed in each of the arc-shaped through grooves. The space between the arc-shaped plate and the side wall of the arc-shaped through groove is the feed inlet. The size of the feed inlet of the first separator is adjusted by adjusting the position of the arc-shaped plate in the arc-shaped through groove. The top end of each arc-shaped plate penetrates through the arc-shaped through groove and is provided with a first triangular block. Each of the arc-shaped plates and the inner wall of the arc-shaped through groove is connected by a first elastic member. The top end of each first triangular block is provided with a first ring. A second ring is installed inside the first ring at the top end of each first triangular block. Two vertically arranged first slide rails are symmetrically installed on the top end of the first separator about the main shaft and are located outside the first ring. Two vertically arranged second slide rails are symmetrically installed on the top end of the first separator about the main shaft and are located inside the second ring. A first slider is slidably installed in each of the two first slide rails. Both of the two first sliders are connected to the first ring. A second slider is slidably installed in each of the two second slide rails. Both of the two second sliders are connected to the second ring. A plurality of second triangular blocks that are in contact with the first triangular blocks are evenly arranged along the circumferential direction at the bottom end of the first ring. A plurality of third triangular blocks that are in contact with the first triangular blocks are evenly arranged along the circumferential direction at the bottom end of the second ring. Each of the second triangular blocks is located on one side of the corresponding first triangular block. Each of the third triangular blocks is located on the other side of the corresponding first triangular block. The two first sliders and the two second sliders are connected to the top end of the first separator by second elastic members. A first driving member is arranged on the top plate. The output end of the first driving member is installed with a first pressing member. The first pressing member and the top end of the first ring are in the same vertical direction. A second driving member is arranged on the side of the first driving member on the top plate. The output end of the second driving member is installed with a second pressing member. The second pressing member and the top end of the second ring are in the same vertical direction.

2. The vertical centrifugal separation nano sand mill according to claim 1, wherein, The medium dispersion mechanism includes a medium dispersion plate. A medium dispersion plate is rotatably installed at the bottom end of the grinding cylinder. A plurality of convex portions are evenly arranged along the circumferential direction on the medium dispersion plate.

3. The vertical centrifugal separation nanometer sand mill according to claim 2, characterized in that, Each of the convex portions is arc-shaped and is arranged clockwise along the rotation direction of the medium dispersion plate.

4. The vertical centrifugal separation nano sand mill according to claim 2, characterized in that, The top end of the medium dispersion plate is connected to the bottom end of the main shaft.

5. The vertical centrifugal separation nano sand mill according to claim 1, characterized in that, A sealing ring is installed on the outer wall of the top side of the first separator. The sealing ring is slidably and sealingly connected with the inner wall of the grinding cylinder.

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