High-speed mixing granulation device capable of achieving multi-stage cutting

Abstract

The invention relates to a high-speed mixing granulation device capable of achieving multi-stage cutting, in particular to the technical field of granulation, the high-speed mixing granulation device comprises a mixing cavity, a stirring main shaft is connected to the center of the top of the mixing cavity through a bearing, and radial fan-shaped cutters are fixedly connected to the outer wall of the top of the stirring main shaft; a radial fan-shaped cutter is arranged in the mixing cavity, a cutting blade is arranged at the bottom of the radial fan-shaped cutter, a crossed spiral cutter is arranged at the bottom of the cutting blade, the crossed spiral cutter is fixedly connected with the outer wall of the stirring main shaft, a servo motor is fixedly connected to the center of the top of the mixing cavity, and the output end of the servo motor is connected with the stirring main shaft. Powder can be radially thrown and agglomerated through the radial fan-shaped cutters, wet agglomerates are crushed into fine particles through the cutting blades, sphere-like particles are formed through repeated collision and extrusion, the cross spiral cutters on the lower layer rotate to generate vortex to compact the particles, and the mixing time is shortened through the synergistic effect of the three stages of cutter sets.

Description

Technical Field

[0001] The present application relates to the technical field of granulation, and in particular to a high-speed mixing granulation device capable of multi-stage cutting. Background Art

[0002] Currently, the powder granulation technology mainly realizes granulation through high-speed shear mixing. The mainstream equipment includes single-shaft mixing granulators, fluidized bed granulators, etc. Single-shaft equipment relies on the rotation of a single cutter group to generate shear force, and the mixing efficiency is limited by the cutter group structure and rotation speed. Although the fluidized bed technology can achieve uniform granulation, it has high energy consumption and strict requirements for the fluidity of materials. In recent years, with the increasing demand of the pharmaceutical industry for particle uniformity and production efficiency, problems such as insufficient mixing and wide particle size distribution of traditional equipment have become increasingly prominent, and breakthrough solutions are still needed.

[0003] In the prior art, a single-cutter group high-speed shear granulator and a multi-layer staggered cutter group equipment are mostly used. The single-cutter group high-speed shear granulator uses a single-layer blade at the bottom to rotate and cut wet materials. It has a simple structure but has mixing dead angles, and the particle sizes are uneven. The multi-layer staggered cutter group equipment improves the mixing degree through the reverse rotation of the upper and lower layers of blades, but the fixed distance between the cutter groups leads to fine powder agglomeration, and it is easy to cause power loss. The single-stage cutter group has uneven shear force distribution, poor axial flow of materials, and a long mixing cycle. Summary of the Invention

[0004] The purpose of the present application is to provide a high-speed mixing granulation device capable of multi-stage cutting.

[0005] In a first aspect, a high-speed mixing granulation device capable of multi-stage cutting provided by the present application adopts the following technical solution: A high-speed mixing granulation device capable of multi-stage cutting, including a mixing cavity. The center of the top of the mixing cavity is connected to a stirring main shaft through a bearing. A radial fan-shaped cutter is fixedly connected to the outer wall of the top of the stirring main shaft. A cutting blade is arranged at the bottom of the radial fan-shaped cutter. A cross spiral cutter is arranged at the bottom of the cutting blade. Connecting holes are arranged in an array on the middle surface of the stirring main shaft. The cutting blade is connected to the connecting hole through a bolt. The cross spiral cutter is fixedly connected to the outer wall of the stirring main shaft. A servo motor is fixedly connected to the center of the top of the mixing cavity. The output end of the servo motor is connected to the stirring main shaft. A feed inlet is arranged on one side of the servo motor. A spray interface is arranged on one side of the feed inlet. The inner wall of the top of the mixing cavity is slidably connected to an upper rotating ring through an annular slide rail. A tooth groove is arranged on the inner wall of the upper rotating ring.

[0006] By adopting the above technical solution, the upper rotating ring can rotate at the top of the mixing cavity. The powder material can enter the mixing cavity through the feeding port. The spray interface can be connected to the adhesive storage tank, and the adhesive is atomized and sprayed into the mixing cavity under high pressure through the spray interface. After the material is wetted to form a soft material, the stirring main shaft is driven by a servo motor to rotate. The rotation of the stirring main shaft drives the radial fan-shaped knife, the cutting blade and the cross spiral knife to rotate synchronously. Among them, the radial fan-shaped knife is fixed at an inclination of 15°, which can radially sprinkle the powder, break the agglomeration. The cutting blade is composed of multiple groups of V-shaped blades, and the distance can be changed through multiple connecting holes and bolts to achieve dynamic grading cutting. The wet mass is broken into fine particles by the cutting blade, and spherical particles are formed through repeated collision and extrusion. The cross spiral knife at the lower layer rotates to generate a vortex to make the particles dense, and the mixing time is shortened through the synergistic effect of the three-stage knife group.

[0007] A driving gear is fixedly connected to the outer wall of the top of the stirring main shaft. One side of the inner wall of the top of the mixing cavity is connected with a driven shaft through a bearing. A driven gear is fixedly connected to the outer wall of the driven shaft. The driving gear meshes with the driven gear, and the side of the driven gear away from the driving gear meshes with a tooth groove.

[0008] By adopting the above technical solution, the rotation of the stirring main shaft can drive the driving gear to rotate synchronously. The rotation of the driving gear drives the driven gear to rotate in the opposite direction. The rotation of the driven gear drives the tooth groove to rotate. The rotation of the tooth groove drives the upper rotating ring to rotate synchronously. At the same time, due to the drive of the driven gear, the rotation direction of the upper rotating ring is opposite to that of the stirring main shaft.

[0009] Connecting rods are arranged at equal intervals on the outer wall of the bottom of the upper rotating ring. A cleaning scraper is connected to the outer wall of the connecting rod. The end of the cleaning scraper is in contact with the inner wall of the mixing cavity. A flow guiding partition is fixedly connected between the inner walls of multiple groups of connecting rods. There are two groups of the flow guiding partitions, and the two groups of flow guiding partitions are respectively arranged on the upper and lower sides of the cutting blade.

[0010] By adopting the above technical solution, the rotation of the upper rotating ring drives the connecting rods to rotate synchronously. The rotation of the connecting rods drives the cleaning scraper to rotate synchronously. The cleaning scraper rotates to scrape the inner wall of the mixing cavity, so as to prevent the powder from adhering to the inner wall. At the same time, it drives the flow guiding partition and the auxiliary blade to rotate synchronously. The auxiliary blade and the cutting blade rotate in opposite directions to make the material subject to a two-way shearing force, thereby shortening the mixing time.

[0011] The flow guiding partition is of a conical umbrella-shaped structure, and a through groove is arranged at the center of the flow guiding partition. The stirring main shaft passes through the middle of the through groove. Stopping strips are arranged at equal intervals on the upper surface of the flow guiding partition. An auxiliary blade is arranged in the middle of the two groups of flow guiding partitions. The auxiliary blade is fixedly connected to the outer wall of the connecting rod.

[0012] By adopting the above technical solution, the radial fan-shaped knife, the cutting blade and the cross spiral knife are separated by two groups of diversion partition plates to avoid interference between layers. At the same time, the diversion partition plates use gravity to guide the material to fall centrally, avoiding edge accumulation, and can control the falling path of the material. At the same time, the rotation drives the baffle to rotate to rotate the material, so that the residence time of the material at each level is increased, ensuring the granulation effect.

[0013] The bottom end of the connecting rod is fixedly connected with a lower rotating ring, the bottom end of the lower rotating ring is connected with a toothed ring, the bottom of the mixing cavity is connected with a screening bin, the mixing cavity is communicated with the screening bin, one side of the screening bin is provided with a discharge port, the end of the screening bin far away from the discharge port is provided with a recovery port, and the bottom end of the screening bin is provided with a powder collection port.

[0014] By adopting the above technical solution, the lower rotating ring can move synchronously with the connecting rod to drive the toothed ring to rotate. The screening bin can screen the particles, so as to screen out the larger particles and the unformed powder, and the particles meeting the standards can be discharged through the discharge port.

[0015] An activity frame is arranged in the middle of the screening bin. The top of the activity frame is fixedly connected with a first screening plate, the bottom end of the activity frame is fixedly connected with a second screening plate. The outer walls of the first screening plate and the second screening plate are both close to the screening bin. The aperture of the first screening plate is larger than that of the second screening plate. The first screening plate and the second screening plate are both inclined and the inclination directions are opposite. One side of the bottom of the second screening plate is matched with the discharge port, and one side of the bottom of the first screening plate is matched with the recovery port.

[0016] By adopting the above technical solution, through the screening of the first screening plate and the second screening plate, the particles remaining on the surface of the first screening plate can be discharged into the recovery port and then enter the recovery bin, and the particles remaining on the surface of the second screening plate can be discharged into the drying bin through the discharge port.

[0017] Both outer walls of the activity frame are fixedly connected with connecting pieces. Limit grooves are arranged in the middle of the two inner walls of the screening bin close to the connecting pieces. The outer wall of the connecting piece far away from the activity frame is fixedly connected with a limit block, and the limit block is embedded in the limit groove. And a support spring is fixedly connected to the bottom inner wall of the limit groove, and the top of the support spring is connected with the limit block.

[0018] By adopting the above technical solution, the connecting piece plays a role in connecting the limit block. At the same time, the connecting piece can prevent particles from entering the limit groove. The limit block can move up and down and slide in the limit groove, and the support spring plays a supporting role and compresses, contracts and rebounds under pressure.

[0019] The top of the inner wall of the screening bin is connected with a linkage rod through a bearing. One outer wall of the linkage rod is fixedly connected with a linkage gear, and the linkage gear meshes with a toothed ring. Both sides of the middle outer wall of the linkage rod are provided with cams. Both sides of the upper surface of the first screening plate are provided with abutting platforms, and the outer wall of the cam abuts against the abutting platform.

[0020] By adopting the above technical solution, the lower rotating ring rotates with the connecting rod to drive the toothed ring to rotate. The toothed ring meshes with the linkage gear to drive the linkage rod and the cam to rotate. The cam periodically presses against the abutting platform, so that the first screening plate and the movable frame vibrate up and down under the action of the supporting spring. The first screening plate and the second screening plate vibrate synchronously for screening. Qualified particles slide into the discharge port along the inclined direction through the second screening plate and then enter the drying bin. Oversized particles stay on the surface of the first screening plate and then slide to the recovery port for collection. The collected oversized particles can re-enter the mixing cavity for secondary granulation. Fine powder falls into the powder collection port for convenient centralized recovery or mixing with new materials.

[0021] One side of the discharge port is communicated with a drying bin. A conveyor is arranged at the inner bottom end of the drying bin. Electric heating wires are arranged in an array on the inner wall of the drying bin. One outer wall of the drying bin is fixedly connected with a circulation pipeline.

[0022] By adopting the above technical solution, a temperature sensor is arranged inside the drying bin. The drying bin can quickly dry qualified particles to avoid adhesion due to moisture retention. The conveyor is a prior art and can convey the particles to the outside. The power of the electric heating wire is 5 - 30 kW, and multi-stage temperature control can be performed. The conveyor is used to adjust the residence time of the particles. Both ends of the circulation pipeline are communicated with the drying bin, and can drive the internal air circulation to achieve uniform drying of the particles.

[0023] One end of the linkage rod passes through the outer wall of the screening bin and is fixedly connected with a first bevel gear. One outer wall of the screening bin is fixedly connected with an auxiliary frame. A rotating rod is connected through a bearing in the middle of the auxiliary frame. A second bevel gear is connected to one outer wall of the rotating rod. The second bevel gear meshes with the first bevel gear. The end of the rotating rod far away from the second bevel gear extends into the circulation pipeline and is connected with a spiral fan.

[0024] By adopting the above technical solution, the rotation of the linkage rod drives the first bevel gear to rotate synchronously. The first bevel gear meshes with the second bevel gear to drive the rotating rod to rotate, and then drives the spiral fan to rotate, so as to draw back the hot air in the drying bin through the circulation pipeline for reheating, improving the uniformity of particle drying. The screening vibration and the heat circulation share the same power source, without an additional motor, reducing the equipment cost.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The stirring main shaft is driven to rotate by a servo motor. The rotation of the stirring main shaft drives the radial fan-shaped knives, cutting blades and cross spiral knives to rotate synchronously. Among them, the radial fan-shaped knives can radially sprinkle the powder, break the agglomeration, the cutting blades break the wet mass into fine particles, and through repeated collisions and squeezes, spherical particles are formed. The cross spiral knives at the lower layer rotate to generate eddies to make the particles dense, and the cooperation of the three-stage knife group shortens the mixing time. 2. The rotation of the linkage rod drives the cam to rotate. The cam periodically presses against the abutting platform, so that the first sieve plate and the movable frame vibrate up and down under the action of the support spring. The first sieve plate and the second sieve plate vibrate synchronously for screening. At the same time, the rotation of the linkage rod drives the first bevel gear to rotate synchronously. The first bevel gear meshes with the second bevel gear to drive the rotating rod and the spiral fan to rotate, so as to draw back the hot air in the drying bin through the circulation pipeline and reheat it, improving the uniformity of particle drying. The screening vibration and the heat circulation share the same power source, without an additional motor, reducing the equipment cost. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 It is a schematic diagram of the connection structure between the connecting rod and the upper rotating ring of the embodiment of the present application; Figure 3 It is a schematic diagram of the connection structure between the linkage rod and the cam of the embodiment of the present application; Figure 4 It is a schematic diagram of the connection structure between the stirring main shaft and the cutting blade of the embodiment of the present application; Figure 5 It is a schematic diagram of the connection structure between the first sieve plate and the second sieve plate of the embodiment of the present application; Figure 6 It is a schematic diagram of the connection structure between the limiting groove and the limiting block of the embodiment of the present application; Figure 7 It is a schematic diagram of the overall top view structure of the embodiment of the present application; Figure 8 It is a schematic diagram of the connection structure between the tooth groove and the driven gear of the embodiment of the present application.

[0027] Description of reference numerals: 1. Mixing cavity; 2. Stirring main shaft; 201. Connecting hole; 3. Radial fan-shaped knife; 4. Cutting blade; 5. Cross spiral knife; 6. Servo motor; 7. Feed inlet; 8. Spray interface; 9. Upper rotating ring; 10. Tooth groove; 11. Driving gear; 12. Driven shaft; 13. Driven gear; 14. Connecting rod; 141. Cleaning scraper; 15. Flow guiding partition; 16. Through groove; 17. Stop bar; 18. Auxiliary blade; 19. Lower rotating ring; 191. Tooth ring; 20. Screening bin; 21. Discharge port; 22. Recovery port; 23. Powder collection port; 24. Movable frame; 25. First screening plate; 26. Second screening plate; 27. Connecting piece; 28. Limit groove; 29. Limit block; 30. Support spring; 31. Linking rod; 32. Linking gear; 33. Cam; 34. Contact platform; 35. Drying bin; 36. Conveyor; 37. Electric heating wire; 38. Circulation pipeline; 39. First bevel gear; 40. Auxiliary frame; 41. Rotating rod; 42. Second bevel gear; 43. Spiral blade fan. Detailed implementation manners

[0028] The following will Figure 1 - with reference Figure 8 to the attached drawings, further elaborate on this application.

[0029] Embodiment: A high-speed mixing granulation device capable of multi-stage cutting, including a mixing cavity 1. The top center of the mixing cavity 1 is connected to a stirring main shaft 2 through a bearing. A radial fan-shaped knife 3 is fixedly connected to the outer wall of the top of the stirring main shaft 2. A cutting blade 4 is arranged at the bottom of the radial fan-shaped knife 3. A cross spiral knife 5 is arranged at the bottom of the cutting blade 4. Connecting holes 201 are arranged in an array on the middle surface of the stirring main shaft 2. The cutting blade 4 is connected to the connecting holes 201 through bolts. The cross spiral knife 5 is fixedly connected to the outer wall of the stirring main shaft 2. A servo motor 6 is fixedly connected to the top center of the mixing cavity 1. The output end of the servo motor 6 is connected to the stirring main shaft 2. A feed inlet 7 is arranged on one side of the servo motor 6. A spray interface 8 is arranged on one side of the feed inlet 7. The inner wall of the top of the mixing cavity 1 is slidably connected to an upper rotating ring 9 through an annular slide rail. A tooth groove 10 is arranged on the inner wall of the upper rotating ring 9. The upper rotating ring 9 can rotate on the top of the mixing cavity 1. Powders can enter the mixing cavity 1 through the feed inlet 7. The spray interface 8 can be communicated with an adhesive storage tank. The adhesive is sprayed into the mixing cavity 1 in a high-pressure atomized manner through the spray interface 8. After the materials are wetted to form soft materials, the servo motor 6 drives the stirring main shaft 2 to rotate. The rotation of the stirring main shaft 2 drives the radial fan-shaped knife 3, the cutting blade 4 and the cross spiral knife 5 to rotate synchronously. Among them, the radial fan-shaped knife 3 is fixed at an angle of 15°, which can radially sprinkle the powder and break the agglomeration. The cutting blade 4 is composed of multiple V-shaped blades. The distance can be changed through the connection of multiple connecting holes 201 and bolts to achieve dynamic grading cutting. The wet mass is broken into fine particles by the cutting blade 4, and spherical particles are formed through repeated collisions and squeezes. The lower cross spiral knife 5 rotates to generate a vortex to make the particles dense. The synergistic effect of the three-stage knife group shortens the mixing time.

[0030] A driving gear 11 is fixedly connected to the outer wall of the top of the stirring main shaft 2. One side of the inner wall of the top of the mixing cavity 1 is connected to a driven shaft 12 through a bearing. A driven gear 13 is fixedly connected to the outer wall of the driven shaft 12. The driving gear 11 meshes with the driven gear 13, and the side of the driven gear 13 away from the driving gear 11 meshes with the tooth groove 10. Among them, the rotation of the stirring main shaft 2 can drive the driving gear 11 to rotate synchronously. The rotation of the driving gear 11 drives the driven gear 13 to rotate in the opposite direction. The rotation of the driven gear 13 drives the tooth groove 10 to rotate. The rotation of the tooth groove 10 drives the upper rotating ring 9 to rotate synchronously. At the same time, due to the drive of the driven gear, the rotation direction of the upper rotating ring 9 is opposite to that of the stirring main shaft 2.

[0031] The outer wall of the bottom of the upper rotating ring 9 is connected with connecting rods 14 arranged at equal intervals. The outer wall of the connecting rod 14 is connected with a cleaning scraper 141. The end of the cleaning scraper 141 is in contact with the inner wall of the mixing cavity 1. A flow guiding partition 15 is fixedly connected between the inner walls of multiple groups of connecting rods 14. There are two groups of flow guiding partitions 15, and the two groups of flow guiding partitions 15 are respectively arranged on the upper and lower sides of the cutting blade 4. The flow guiding partition 15 is of a conical umbrella-shaped structure, and a through groove 16 is arranged at the center of the flow guiding partition 15. The stirring main shaft 2 passes through the middle of the through groove 16. The upper surface of the flow guiding partition 15 is arranged with blocking strips 17 at equal intervals. An auxiliary blade 18 is arranged in the middle of the two groups of flow guiding partitions 15. The auxiliary blade 18 is fixedly connected with the outer wall of the connecting rod 14. The rotation of the upper rotating ring 9 drives the connecting rod 14 to rotate synchronously. The rotation of the connecting rod 14 drives the cleaning scraper 141 to rotate synchronously. The cleaning scraper 141 rotates to scrape the inner wall of the mixing cavity 1, thereby preventing powder from adhering to the inner wall. At the same time, it drives the flow guiding partition 15 and the auxiliary blade 18 to rotate synchronously. The auxiliary blade 18 and the cutting blade 4 rotate in opposite directions to make the material subject to a double shear force, thereby shortening the mixing time. The radial fan-shaped knife 3, the cutting blade 4, and the cross spiral knife 5 are separated by the two groups of flow guiding partitions 15 to avoid interlayer interference. At the same time, the flow guiding partition 15 uses gravity to guide the material to concentrate and fall towards the center, avoiding edge accumulation, being able to control the falling path of the material. At the same time, the rotation drives the blocking strip 17 to rotate to rotate the material and increase the residence time of the material at each level, ensuring the granulation effect.

[0032] The bottom end of the connecting rod 14 is fixedly connected with a lower rotating ring 19. The bottom end of the lower rotating ring 19 is connected with a toothed ring 191. The bottom of the mixing cavity 1 is connected with a screening bin 20. The mixing cavity 1 is communicated with the screening bin 20. One side of the screening bin 20 is provided with a discharge port 21. One end of the screening bin 20 far from the discharge port 21 is provided with a recovery port 22. The bottom end of the screening bin 20 is provided with a powder collection port 23. The middle of the screening bin 20 is provided with a movable frame 24. The top of the movable frame 24 is fixedly connected with a first screening plate 25. The bottom end of the movable frame 24 is fixedly connected with a second screening plate 26. The outer walls of the first screening plate 25 and the second screening plate 26 are both close to the screening bin 20. The aperture of the first screening plate 25 is larger than that of the second screening plate 26. Both the first screening plate 25 and the second screening plate 26 are inclined and the inclined directions are opposite. One side of the bottom of the second screening plate 26 is matched with the discharge port 21. One side of the bottom of the first screening plate 25 is matched with the recovery port 22. Among them, the lower rotating ring 19 can move synchronously with the connecting rod 14 to drive the toothed ring 191 to rotate. Through the screening bin 20, the particles can be screened, so as to screen out the larger particles and the unformed powder. The particles meeting the standard can be discharged through the discharge port 21. Through the screening of the first screening plate 25 and the second screening plate 26, the particles remaining on the surface of the first screening plate 25 can be discharged to the recovery port 22 and then enter the recovery bin, and the particles remaining on the surface of the second screening plate 26 can be discharged into the drying bin 35 through the discharge port 21.

[0033] Both outer walls of the movable frame 24 are fixedly connected with connecting pieces 27. The middle parts of the inner walls on both sides of the screening bin 20 close to the connecting pieces 27 are provided with limiting grooves 28. The outer wall of one side of the connecting piece 27 far from the movable frame 24 is fixedly connected with a limiting block 29. The limiting block 29 is embedded in the limiting groove 28. And the bottom inner wall of the limiting groove 28 is fixedly connected with a support spring 30. The top of the support spring 30 is connected with the limiting block 29. The connecting piece 27 plays a role in connecting the limiting block 29. At the same time, the connecting piece 27 can prevent particles from entering the limiting groove 28. The limiting block 29 can move up and down and slide in the limiting groove 28. The support spring 30 plays a supporting role and compresses, contracts and rebounds under pressure.

[0034] At the top of the inner wall of the screening bin 20, a linkage rod 31 is connected by a bearing. On one outer wall of the linkage rod 31, a linkage gear 32 is fixedly connected. The linkage gear 32 meshes with the toothed ring 191. On both sides of the middle outer wall of the linkage rod 31, cams 33 are provided. On both sides of the upper surface of the first screening plate 25, abutting platforms 34 are provided. The outer wall of the cam 33 abuts against the abutting platform 34. The lower rotating ring 19 rotates with the connecting rod 14 to drive the toothed ring 191 to rotate. The toothed ring 191 meshes with the linkage gear 32 to drive the linkage rod 31 and the cam 33 to rotate. The cam 33 periodically presses against the abutting platform 34, so that the first screening plate 25 and the movable frame 24 vibrate up and down under the action of the support spring 30. The first screening plate 25 and the second screening plate 26 vibrate synchronously for screening. Qualified particles slide into the discharge port 21 along an inclined direction through the second screening plate 26 and then enter the drying bin 35. Oversized particles stay on the surface of the first screening plate 25 and then slide towards the recovery port 22 for collection. The collected oversized particles can re-enter the mixing cavity 1 for secondary granulation. Fine powder falls into the powder collection port 23 for convenient centralized recovery or mixing with new materials.

[0035] On one side of the discharge port 21, a drying bin 35 is communicated. At the bottom end of the inside of the drying bin 35, a conveyor 36 is provided. Electric heating wires 37 are arranged in an array on the inner wall of the drying bin 35. On one outer wall of the drying bin 35, a circulation pipeline 38 is fixedly connected. A temperature sensor is provided inside the drying bin 35. The drying bin 35 can quickly dry qualified particles to avoid sticking due to moisture retention. The conveyor 36 is a prior art and can convey particles to the outside. The power of the electric heating wires 37 is 5 - 30 kW and can be temperature-controlled in multiple sections. In cooperation with the conveyor 36, the residence time of the particles is adjusted. Both ends of the circulation pipeline 38 are communicated with the drying bin 35, and can drive the internal air to circulate to achieve uniform drying of the particles.

[0036] One end of the linkage rod 31 passes through the outer wall of the screening bin 20 and is fixedly connected with a first bevel gear 39. On one outer wall of the screening bin 20, an auxiliary frame 40 is fixedly connected. In the middle of the auxiliary frame 40, a rotating rod 41 is connected by a bearing. On one outer wall of the rotating rod 41, a second bevel gear 42 is connected. The second bevel gear 42 meshes with the first bevel gear 39. One end of the rotating rod 41 away from the second bevel gear 42 extends into the circulation pipeline 38 and is connected with a spiral blade fan 43. The rotation of the linkage rod 31 drives the first bevel gear 39 to rotate synchronously. The first bevel gear 39 meshes with the second bevel gear 42 to drive the rotating rod 41 to rotate, and then drives the spiral blade fan 43 to rotate, so as to draw back the hot air in the drying bin 35 through the circulation pipeline 38 for reheating, improving the uniformity of particle drying. The screening vibration and the heat circulation share the same power source, without an additional motor, reducing the equipment cost.

[0037] The implementation principle of the embodiments of this application is as follows: First, the powder material enters the mixing cavity 1 through the feed port 7, and the binder is atomized and sprayed into the mixing cavity 1 under high pressure through the spray interface 8. After the material is wetted to form a soft material, the servo motor 6 drives the stirring main shaft 2 to rotate. The rotation of the stirring main shaft 2 drives the radial fan-shaped knife 3, the cutting blade 4, and the cross spiral knife 5 to rotate synchronously. Among them, the radial fan-shaped knife 3 can radially sprinkle the powder, breaking the agglomeration. The wet mass is broken into fine particles by the cutting blade 4, and spherical-like particles are formed through repeated collisions and squeezes. The lower cross spiral knife 5 rotates to generate a vortex to densify the particles. The rotation of the stirring main shaft 2 can drive the driving gear 11 to rotate synchronously. The rotation of the driving gear 11 drives the driven gear 13 to rotate in the opposite direction. The rotation of the driven gear 13 drives the tooth groove 10 to rotate. The rotation of the tooth groove 10 drives the upper rotating ring 9 to rotate synchronously. At the same time, due to the drive of the driven gear 13, the rotation direction of the upper rotating ring 9 is opposite to that of the stirring main shaft 2. The rotation of the upper rotating ring 9 drives the connecting rod 14 to rotate synchronously. The rotation of the connecting rod 14 drives the cleaning scraper 141 to rotate synchronously. The cleaning scraper 141 rotates to scrape the inner wall of the mixing cavity 1, thus preventing the powder material from adhering to the inner wall. At the same time, it drives the guide baffle 15 and the auxiliary blade 18 to rotate synchronously. The auxiliary blade 18 and the cutting blade 4 rotate in opposite directions to make the material subject to a two-way shearing force, thus shortening the mixing time. The two guide baffles 15 separate the radial fan-shaped knife 3, the cutting blade 4, and the cross spiral knife 5 to avoid interlayer interference. At the same time, the guide baffle 15 uses gravity to guide the material to concentrate and fall towards the center, avoiding edge accumulation, and can control the falling path of the material. At the same time, it rotates to drive the baffle 17 to rotate to rotate the material and make its residence time at each level longer, ensuring the granulation effect. The screening bin 20 can screen the particles, thus screening out the larger particles and the unformed powder. The qualified particles can be discharged through the discharge port 21. Screening is carried out through the first screening plate 25 and the second screening plate 26. The particles remaining on the surface of the first screening plate 25 can be discharged to the recovery port 22 and then enter the recovery bin. The particles remaining on the surface of the second screening plate 26 can be discharged into the drying bin 35 through the discharge port 21. The drying bin 35 can quickly dry the qualified particles to avoid adhesion due to remaining wet. The conveyor 36 is a prior art and can convey the particles to the outside. The power of the electric heating wire 37 is 5 - 30 kW, and it can be temperature-controlled in multiple segments. It cooperates with the conveyor 36 to adjust the residence time of the particles. Both ends of the circulation pipeline 38 are connected to the drying bin 35, and it can drive the internal air to circulate to achieve uniform drying of the particles. The linkage rod 31 rotates to drive the first bevel gear 39 to rotate synchronously. The first bevel gear 39 meshes with the second bevel gear 42 to drive the rotating rod 41 to rotate, thereby driving the spiral fan 43 to rotate, so as to draw back the hot air in the drying bin 35 through the circulation pipeline 38 and reheat it, improving the uniformity of particle drying. The screening vibration and the heat circulation share the same power source, without an additional motor, reducing the equipment cost.

[0038] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A high-speed hybrid granulation device capable of multi-stage cutting, comprising a mixing cavity (1), characterized in that: At the center of the top of the mixing cavity (1), a stirring main shaft (2) is connected by a bearing. On the outer wall of the top of the stirring main shaft (2), a radial fan-shaped knife (3) is fixedly connected. At the bottom of the radial fan-shaped knife (3), a cutting blade (4) is provided. At the bottom of the cutting blade (4), a cross spiral knife (5) is provided. On the middle surface of the stirring main shaft (2), connection holes (201) are arranged in an array. The cutting blade (4) is connected to the connection holes (201) by bolts. The cross spiral knife (5) is fixedly connected to the outer wall of the stirring main shaft (2). At the center of the top of the mixing cavity (1), a servo motor (6) is fixedly connected. The output end of the servo motor (6) is connected to the stirring main shaft (2). On one side of the servo motor (6), a feed inlet (7) is provided. On one side of the feed inlet (7), a spray interface (8) is provided. On the inner wall of the top of the mixing cavity (1), an upper rotating ring (9) is slidably connected by an annular slide rail. On the inner wall of the upper rotating ring (9), a tooth groove (10) is provided.

2. The high-speed mixing granulation device capable of multi-stage cutting according to claim 1, wherein: On the outer wall of the top of the stirring main shaft (2), a driving gear (11) is fixedly connected. On one side of the inner wall of the top of the mixing cavity (1), a driven shaft (12) is connected by a bearing. On the outer wall of the driven shaft (12), a driven gear (13) is fixedly connected. The driving gear (11) meshes with the driven gear (13), and on the side of the driven gear (13) away from the driving gear (11), it meshes with the tooth groove (10).

3. The high-speed hybrid granulation device capable of multi-stage cutting according to claim 2, wherein: On the outer wall of the bottom of the upper rotating ring (9), connecting rods (14) are arranged at equal intervals. On the outer wall of the connecting rods (14), cleaning scrapers (141) are connected. The end of the cleaning scraper (141) is in contact with the inner wall of the mixing cavity (1). Between the inner walls of multiple groups of the connecting rods (14), a flow guiding partition (15) is fixedly connected. There are two groups of the flow guiding partitions (15), and the two groups of the flow guiding partitions (15) are respectively arranged on the upper and lower sides of the cutting blade (4).

4. A high-speed hybrid granulation device capable of multi-stage cutting according to claim 3, characterized in that: The flow guiding partition (15) is of a conical umbrella-shaped structure, and a through groove (16) is provided at the center of the flow guiding partition (15). The stirring main shaft (2) passes through the middle of the through groove (16). On the upper surface of the flow guiding partition (15), blocking strips (17) are arranged at equal intervals. In the middle of the two groups of the flow guiding partitions (15), an auxiliary blade (18) is provided. The auxiliary blade (18) is fixedly connected to the outer wall of the connecting rod (14).

5. A high-speed hybrid granulation device capable of multi-stage cutting according to claim 4, characterized in that: At the bottom end of the connecting rod (14), a lower rotating ring (19) is fixedly connected. At the bottom end of the lower rotating ring (19), a tooth ring (191) is connected. At the bottom of the mixing cavity (1), a screening bin (20) is connected. The mixing cavity (1) is communicated with the screening bin (20). On one side of the screening bin (20), a discharge port (21) is provided. At one end of the screening bin (20) away from the discharge port (21), a recovery port (22) is provided. At the bottom end of the screening bin (20), a powder collection port (23) is provided.

6. A high-speed mixing granulation device capable of multi-stage cutting according to claim 2, characterized in that: A movable frame (24) is arranged in the middle of the screening bin (20). A first screening plate (25) is fixedly connected to the top of the movable frame (24), and a second screening plate (26) is fixedly connected to the bottom end of the movable frame (24). The outer walls of the first screening plate (25) and the second screening plate (26) are both close to the screening bin (20). The aperture of the first screening plate (25) is larger than that of the second screening plate (26). Both the first screening plate (25) and the second screening plate (26) are inclined and in opposite inclined directions. One side of the bottom of the second screening plate (26) is matched with the discharge port (21), and one side of the bottom of the first screening plate (25) is matched with the recovery port (22).

7. A high-speed mixing granulation device capable of multi-stage cutting according to claim 6, characterized in that: Connecting pieces (27) are fixedly connected to the outer walls on both sides of the movable frame (24). Limiting grooves (28) are arranged in the middle of the inner walls on both sides of the screening bin (20) close to the connecting pieces (27). A limiting block (29) is fixedly connected to the outer wall of the connecting piece (27) away from the movable frame (24). The limiting block (29) is embedded in the limiting groove (28), and a supporting spring (30) is fixedly connected to the bottom inner wall of the limiting groove (28). The top of the supporting spring (30) is connected to the limiting block (29).

8. A high-speed mixing granulation device capable of multi-stage cutting according to claim 7, characterized in that: A linkage rod (31) is connected to the top of the inner wall of the screening bin (20) through a bearing. A linkage gear (32) is fixedly connected to the outer wall of one side of the linkage rod (31). The linkage gear (32) is meshed with the toothed ring (191). Cams (33) are arranged on both sides of the outer wall in the middle of the linkage rod (31). Contact platforms (34) are arranged on both sides of the upper surface of the first screening plate (25). The outer wall of the cam (33) is in contact with the contact platform (34).

9. The high-speed hybrid granulation device capable of multi-stage cutting according to claim 6, wherein: A drying bin (35) is communicated with one side of the discharge port (21). A conveyor (36) is arranged at the bottom end inside the drying bin (35). Electric heating wires (37) are arranged in an array on the inner wall of the drying bin (35). A circulation pipeline (38) is fixedly connected to the outer wall of one side of the drying bin (35).

10. A high-speed hybrid granulation device capable of multi-stage cutting according to claim 9, characterized in that: One end of the linkage rod (31) passes through the outer wall of the screening bin (20) and is fixedly connected to a first bevel gear (39). An auxiliary frame (40) is fixedly connected to the outer wall of one side of the screening bin (20). A rotating rod (41) is connected to the middle of the auxiliary frame (40) through a bearing. A second bevel gear (42) is connected to the outer wall of one side of the rotating rod (41). The second bevel gear (42) is meshed with the first bevel gear (39). One end of the rotating rod (41) away from the second bevel gear (42) extends into the circulation pipeline (38) and is connected to a spiral blade fan (43).

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