A new triple granulator

Abstract

The application discloses a novel three-in-one granulator, characterized in that the three-in-one granulator comprises a rack and a barrel arranged on the rack, the lower part of the barrel is provided with a feeding structure, a discharging structure and an air inlet structure, the barrel is internally provided with a stirring structure and a cutting knife, and the upper part of the barrel is communicatively provided with a ventilation structure. The novel three-in-one granulator feeds materials into the barrel through the feeding structure, then performs stirring and cutting work through the stirring structure and the cutting knife, performs boiling granulation work through the air inlet structure and the ventilation structure, and finally discharges materials through the discharging structure, so that the whole process of finished product granule production is completed by one device, the production process is simpler and more convenient, the efficiency is higher, the density and size of the granules can be controlled through cooperation of the structures, and the applicability is stronger.

Description

Technical Field

[0001] This invention relates to the field of granulator technology, and specifically to a novel three-in-one granulator. Background Technology

[0002] Currently, there are various types of granulators on the market, including wet granulators, fluidized bed dryer granulators, spinning granulators, and swing granulators.

[0003] Wet granulation machines are generally used to produce tablet granules, but they can only process certain specific raw materials, have limited applicability, and require specialized supporting equipment, resulting in higher costs. For example, Chinese invention patent application number 202210457734.7 discloses a wet granulation machine. Fluidized bed granulation machines are generally used for producing granules for oral solutions, but their production costs are high and the process is relatively cumbersome. For example, Chinese utility model patent application number 202320408592.5 discloses a fluidized bed dryer. Spin granulation machines have high requirements for the material's adhesiveness, extrudability, and expandability, and are suitable for certain special materials. Special materials are difficult to granulate to achieve the desired effect, and the energy consumption is high. For example, Chinese utility model patent application number 202120342507.0 discloses a spin granulator. In the case of a swing granulator, the powder particles will collide repeatedly in the granulation chamber. Some particles will gather together, while others will be dispersed around, resulting in uneven particle distribution and relatively dense particles, which can easily cause blockage and affect normal production. The granulation speed is relatively slow. For example, Chinese utility model patent application number 202320160972.1 discloses a swing granulator.

[0004] When producing certain special Chinese medicines, the content of the extract must be taken into account. The above-mentioned granulation equipment cannot reach the standard in one go. Multiple granulation operations or multiple granulation equipment working together are required to produce granules that meet the standards. The production process is relatively complicated, and the semi-finished products are easily contaminated during the movement, which reduces the yield. Therefore, there is an urgent need for a granulation machine that can complete all processes to replace multiple pieces of equipment. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a new type of three-in-one granulator with a simpler and more convenient production process, higher yield, and controllable particle density and size.

[0006] Therefore, the present invention is implemented using the following technical solution:

[0007] A novel three-component pellet mill is characterized by comprising a frame and a barrel mounted on the frame. The lower part of the barrel is provided with a feeding structure, a discharging structure, and an air inlet structure. The barrel is provided with a stirring structure and a pelletizing knife. The upper part of the barrel is connected to a ventilation structure.

[0008] Furthermore, the barrel body includes an upper barrel, a middle barrel, and a bottom barrel arranged from top to bottom. The upper barrel and the middle barrel, as well as the middle barrel and the bottom barrel, are detachably connected by clamps. The clamps include a left clamp body and a right clamp body arranged opposite each other. The two ends of the left clamp body are hinged to connecting rods, and the other end of the connecting rods is detachably connected to the right clamp body. The inner walls of the left clamp body and the right clamp body are provided with multiple protruding strips along the circumferential direction. The outer rings of the upper barrel, the middle barrel, and the bottom barrel are provided with annular grooves for inserting the protruding strips. The upper barrel and the middle barrel, and the middle barrel and the bottom barrel are respectively provided with opposite grooves, and annular airbags are provided between the grooves.

[0009] Furthermore, the left hoop has a first lug at both ends and a second lug at both ends. One end of the connecting rod is hinged to the first lug, and the second lug has an opening for inserting the other end of the connecting rod. The other end of the connecting rod is screwed with a nut that can abut against the outer surface of the second lug. The nut has a handle, and the cross-section of the protrusion and the annular groove is trapezoidal.

[0010] Furthermore, the air inlet structure includes multiple arc-shaped grooves on the outer ring of the bottom barrel, the upper end of the arc-shaped grooves is provided with a cap, and the bottom of the arc-shaped grooves is provided with several air inlets. The outer edge of the inner side wall of the bottom barrel is provided with an air duct that communicates with the air inlets. The bottom barrel is provided with a blocking device that can block the air duct, and the bottom barrel is provided with an inlet that communicates with the arc-shaped grooves. The inlet is connected to a hot air cabinet through an air duct.

[0011] Furthermore, the outer wall of the bottom barrel is provided with a channel communicating with the air duct. The blocking device is an integrated cylinder located in the channel. The integrated cylinder includes a cylinder body and a piston rod. The piston rod is a square shaft, and a chuck is provided on the outer side of the piston rod. The outer wall of the bottom barrel is provided with a baffle surrounding several channels. The outer side of the channel is provided with a first step that allows the chuck to abut. A first air chamber is formed between the first step and the baffle to allow the disc and part of the piston rod to move. The cylinder body can move within the channel and the air duct. A locking block is provided on the inner side of the piston rod. A second step that can abut against the locking block is provided on the inner wall of the cylinder body. A third step is provided on the inner side of the channel. A sliding sleeve part aligned with the second step is provided on the outer wall of the cylinder body. The outer ring of the sliding sleeve part is slidably connected to the inner wall of the channel. When the second step abuts against the locking block, the inner end face of the cylinder body is flush with the inner wall of the bottom barrel and blocks the air duct. A second air chamber that allows the cylinder body to move is formed between the third step and the sliding sleeve part.

[0012] Furthermore, the lower end face of the bottom barrel is provided with a first air passage communicating with the first air chamber and a second air passage communicating with the second air chamber. The second air passage is located on the left side of the second step. Both the first and second air passages are equipped with pneumatic connectors. Multiple sealing rings are provided between the cylinder and the passage. The air passage is eccentrically arranged on the bottom barrel with the center of the bottom barrel as the center. The air inlets are evenly distributed at the bottom of the arc-shaped groove.

[0013] Furthermore, the stirring structure includes a base located at the center of the bottom of the bottom barrel, and a stirring blade is detachably mounted on the base. The stirring blade includes a blade holder and several blades that are circumferentially and inclinedly arranged on the outer ring of the blade holder. The blades include an inclined portion and a horizontal portion that are connected to each other from the inside out. The inclined portion is inclined downwards. The bottom of the bottom barrel is provided with an annular boss surface that cooperates with the inclined portion and an annular surface that cooperates with the horizontal portion.

[0014] Furthermore, the outer side of the horizontal section is provided with an upward-sloping ramp at the bottom, and the bottom of the bottom barrel is provided with an annular slope that matches the ramp. The ramp and the annular slope form an angle from bottom to top. The base is frustum-shaped, and the inclined section is a ramp or an arc-shaped slope. The base is provided with an annular slot, and the lower end of the blade holder is provided with an annular step that can be inserted into the annular slot. The center of the base and the blade holder is provided with a through hole for inserting the motor shaft of the second motor. The blade holder is provided with a locking nut that can be screwed to the rotating shaft. The pelletizing blade is driven by the first motor, and the stirring blade is driven by the second motor. The inner wall of the through hole of the base is provided with an annular groove, and multiple skeleton sealing rings that can abut against the outer ring of the rotating shaft are provided in the annular groove. The number of blades is 4-5.

[0015] Furthermore, the ventilation structure includes a partition inside the upper bucket, which divides the upper bucket into multiple dust collection chambers. Each dust collection chamber is equipped with an exhaust pipe, and the outlets of the multiple exhaust pipes are all located on the same side of the upper bucket. The outlets of the multiple exhaust pipes are connected to a collecting pipe, and the other end of the collecting pipe is connected to the inlet of the fan through a ventilation pipe. An explosion relief valve is connected to the upper end of the outlet side of the collecting pipe. Each exhaust pipe outlet is connected to a pneumatic butterfly valve. The inlet side of the collecting pipe is provided with an interface connected to the pneumatic butterfly valve. The pneumatic butterfly valve is equipped with a pneumatic actuator. The partition is a cross partition, which divides the upper bucket into four dust collection chambers. A silencer is provided at the outlet of the fan.

[0016] Furthermore, the feeding structure includes multiple first spray guns communicating with the middle of the bottom barrel, the multiple first spray guns being circumferentially distributed around the outer ring of the middle of the bottom barrel, a second spray gun aligned with the bottom barrel being inserted through the middle of the middle barrel, and the discharging structure includes a guide tube communicating with the lower part of one side of the bottom barrel, a discharging cylinder being provided at the other end of the guide tube, and a discharging pipe being connected to the lower end of the guide tube, and a baffle plate being provided on the piston rod of the discharging cylinder that can fit against the inner wall of the bottom barrel.

[0017] After adopting the above scheme, the material is first fed into the barrel through the feeding structure, then stirred and granulated through the stirring structure and granulator, then boiled granulation through the air inlet and ventilation structures, and finally discharged through the discharge structure. One machine completes the entire process of producing finished granules, making the production process simpler, more convenient, and more efficient. Moreover, the entire process is carried out in a closed space, which is not easy to be contaminated, resulting in a higher yield. The coordination of each structure can also control the density and size of the granules to meet production needs. In addition, when preparing granules for some special Chinese medicines, the above work can be repeated by adding material through the feeding structure after boiling granulation, which makes it easier to control the content of the extract and has wider applicability. Attached Figure Description

[0018] The present invention includes the following figures:

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the clamp in this invention;

[0021] Figure 3 This is a partial cross-sectional view of the clamp after it is assembled with the bottom and middle barrels in this invention.

[0022] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the bottom barrel in this invention;

[0023] Figure 5 This is a cross-sectional view of the bottom barrel and part of the air inlet structure in this invention (the cylinder blocks the air duct).

[0024] Figure 6 This is a partial cross-sectional view of the air intake structure cylinder body in this invention, where the air duct is not blocked.

[0025] Figure 7 This is a cross-sectional view of the air inlet and air duct of the air intake structure in this invention;

[0026] Figure 8 This is a top view of the bottom tank and stirring structure in this invention;

[0027] Figure 9 for Figure 8Sectional view along line AA. Reference numerals: 1. Frame; 2. Barrel; 3. Pelletizer; 4. Upper barrel; 5. Middle barrel; 6. Bottom barrel; 7. Left hoop; 8. Right hoop; 9. Connecting rod; 10. Protrusion; 11. Annular groove; 12. Groove; 13. Annular air bladder; 14. First vertical lug; 15. Second vertical lug; 16. Opening; 17. Nut; 18. Handle; 19. Arc-shaped groove; 20. Cover; 21. Air inlet; 22. Air duct; 23. Hot air cabinet; 24. Channel; 25. Cylinder; 26. Piston rod; 27. Chuck; 28. Baffle; 29. ​​First step; 30. First air chamber; 31. Clamping block; 32. Second step; 33. Third step; 34. Sliding sleeve; 35. Second air chamber; 36. 37. First air duct; 38. Second air duct; 39. Pneumatic connector; 40. Sealing ring; 41. Base; 42. Knife holder; 43. Blade; 44. Inclined part; 45. Horizontal part; 46. Annular boss surface; 47. Annular surface; 48. Slope; 49. Annular slot; 50. Annular step; 51. First motor; 52. Through hole; 53. Locking nut; 55. Skeleton sealing ring; 56. Exhaust pipe; 57. Collecting pipe; 58. Ventilation pipe; 59. Fan; 60. Explosion relief valve; 61. Pneumatic butterfly valve; 62. Pneumatic actuator; 63. Silencer; 64. First spray gun; 65. Second spray gun; 66. Conduit; 67. Discharge cylinder; 68. Discharge pipe; 69. Air duct. Detailed Implementation

[0028] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0029] Referring to the above figures, the present invention provides a novel three-component pelletizing machine including a frame 1 and a barrel 2 mounted on the frame 1. The lower part of the barrel 2 is provided with a feeding structure, a discharging structure, and an air inlet structure. The barrel 2 is provided with a stirring structure and a pelletizing blade 3, and the upper part of the barrel 2 is connected to a ventilation structure. The barrel 2 includes an upper barrel 4, a middle barrel 5, and a bottom barrel 6 arranged from top to bottom. The upper barrel 4 and the middle barrel 5, and the middle barrel 5 and the bottom barrel 6 are detachably connected by clamps. The clamps include a left clamp 7 and a right clamp 8 arranged opposite to each other. The two ends of the left clamp 7 are hinged to connecting rods 9, and the other end of the connecting rod 9 is detachably connected to the right clamp 8. The inner walls of the left clamp 7 and the right clamp 8 are provided with multiple protruding strips 10 along the circumferential direction. The upper barrel 4, the middle barrel 5, and the bottom barrel 6 are connected from top to bottom. The outer ring of the bottom bucket 6 is provided with an annular groove 11 for inserting a protruding strip 10. Corresponding grooves 12 are provided between the upper bucket 4 and the middle bucket 5, and between the middle bucket 5 and the bottom bucket 6. An annular airbag 13 is provided between the grooves 12. The two ends of the left hoop 7 are provided with first upright ears 14, and the two ends of the right hoop 8 are provided with second upright ears 15. One end of the connecting rod 9 is hinged to the first upright ear 14. The second upright ear 15 has an opening 16 for inserting the other end of the connecting rod 9. The other end of the connecting rod 9 is screwed with a nut 17 that abuts against the outer surface of the second upright ear 15. The nut 17 has a handle 18. The cross-section of the protruding strip 10 and the annular groove 11 is trapezoidal. The air inlet structure includes multiple arc-shaped grooves 19 on the outer ring of the bottom bucket 6. The upper end of the arc-shaped groove 19 is provided with a cover 20, and the bottom of the arc-shaped groove 19 is provided with several air inlets 21. The outer edge of the inner side wall of the bottom barrel 6 is provided with an air duct 22 communicating with the air inlets 21. The bottom barrel 6 is provided with a blocking device that can block the air duct 22. The bottom barrel 6 is provided with an inlet communicating with the arc-shaped groove 19. The inlet is connected to a hot air cabinet 23 through an air duct 69. The outer side wall of the bottom barrel 6 is provided with a channel 24 communicating with the air duct 22. The blocking device is an integrated cylinder provided in the channel 24. The integrated cylinder includes a cylinder body 25 and a piston rod 26. The piston rod 26 is a square shaft, and a chuck 27 is provided on the outer side of the piston rod 26. The outer side wall of the bottom barrel 6 is provided with a baffle 28 surrounding several channels 24. The outer side of the channel 24 is provided with a chuck 27 to abut. The cylinder 25 has a first step 29, which forms a first air chamber 30 between the first step 29 and the baffle 28, allowing the disc and part of the piston rod 26 to move. The cylinder 25 can move within the channel 24 and the air duct 22. The piston rod 26 has a locking block 31 on its inner side. The inner wall of the cylinder 25 has a second step 32 that can abut against the locking block 31. The channel 24 has a third step 33 on its inner side. The outer wall of the cylinder 25 has a sliding sleeve 34 that aligns with the second step 32. The outer ring of the sliding sleeve 34 is slidably connected to the inner wall of the channel 24. When the second step 32 abuts against the locking block 31, the inner end face of the cylinder 25 is flush with the inner wall of the bottom barrel 6 and blocks the air duct 22. The third step 33 and the sliding sleeve 34 form a second air chamber 35 that allows the cylinder 25 to move.The lower end face of the bottom barrel 6 is provided with a first air passage 36 communicating with the first air chamber 30 and a second air passage 37 communicating with the second air chamber 35. The second air passage 37 is located to the left of the second step 32. Both the first air passage 36 and the second air passage 37 are equipped with pneumatic connectors 38. Multiple sealing rings 39 are provided between the cylinder body 25 and the channel 24. The air passage 22 is eccentrically arranged on the bottom barrel 6 with the center of the bottom barrel 6 as the center. The air inlets 21 are evenly distributed at the bottom of the arc-shaped groove 19. The stirring structure includes a base 40 located at the center of the bottom of the bottom barrel 6. A stirring blade is detachably mounted on the base 40. The stirring blade includes a blade holder 41 and several blades 42 that are circumferentially evenly inclined and arranged on the outer ring of the blade holder 41. The blades 42 include inclined portions that are interconnected from the inside to the outside. 43 and horizontal part 44, the inclined part 43 is inclined downward, the bottom of the bottom barrel 6 is provided with an annular boss surface 45 that cooperates with the inclined part 43 and an annular surface 46 that cooperates with the horizontal part 44, and the lower outer edge of the inner side wall of the bottom barrel 6 is provided with a plurality of air channels 22 aligned with the stirring blades. The outer side of the horizontal part 44 is provided with a slope 47 that is inclined upward at the bottom. The bottom of the bottom barrel 6 is provided with an annular slope surface 48 that cooperates with the slope 47. The slope 47 and the annular slope surface 48 form an angle from bottom to top. The base 40 is frustum shaped. The inclined part 43 is a slope 47 or an arc slope. The base 40 is provided with an annular slot 49. The lower end of the blade holder 41 is provided with an annular step 50 that can be inserted into the annular slot 49. The center of the base 40 and the blade holder 41 is through. The base 40 has a through hole 52 for inserting the motor shaft of the second motor. A locking nut 53, which can be screwed onto the rotating shaft, is provided on the blade holder 41. The pelletizing blade 3 is driven by the first motor 51, and the stirring blade is driven by the second motor. An annular groove is provided on the inner wall of the through hole 52 of the base 40. Multiple skeleton sealing rings 55, which can abut against the outer ring of the rotating shaft, are provided in the annular groove. The number of blades 42 is 4-5. The ventilation structure includes a partition plate located inside the upper tank 4, which divides the upper tank 4 into multiple dust collection chambers. Each dust collection chamber is equipped with an exhaust pipe 56. The outlets of the multiple exhaust pipes 56 are all located on the same side of the upper tank 4, and the outlets of the multiple exhaust pipes 56 are connected to a collecting pipe 57. The other end of the collecting pipe 57 is connected to the inlet of the ventilator 59 via a ventilation pipe 58. The outlet of the collecting pipe 57... A pressure relief valve 60 is connected to the upper side of the upper part of the air duct 56. Each outlet of the exhaust pipe 56 is connected to a pneumatic butterfly valve 61. The inlet side of the air collecting pipe 57 is provided with an interface communicating with the pneumatic butterfly valve 61. The pneumatic butterfly valve 61 is equipped with a pneumatic actuator 62. The partition is a cross partition, which divides the upper barrel 4 into four dust collection chambers. The outlet of the fan 59 is provided with a silencer 63. The feeding structure includes multiple first spray guns 64 communicating with the middle of the bottom barrel 6. The multiple first spray guns 64 are circumferentially distributed on the outer ring of the middle of the bottom barrel 6. A second spray gun 65 is inserted through the middle of the middle barrel 5 and aligned with the bottom barrel 6. The discharging structure includes a conduit 66 communicating with the lower part of one side of the bottom barrel 6. The other end of the conduit 66 is provided with a discharge cylinder 67, and the lower end of the conduit 66 is connected to a discharge pipe 68.The piston rod 26 of the discharge cylinder 67 is equipped with a baffle plate that can fit against the inner wall of the bottom barrel 6.

[0030] In this embodiment, material is first fed into the bottom tank 6 through the feeding structure, then stirred and granulated by the stirring structure and granulator 3, followed by fluidized bed granulation through the air inlet and ventilation structures, and finally discharged through the outlet structure. One device completes the entire process of finished granule production, making the production process simpler, more convenient, and more efficient. Moreover, the entire process is carried out in a closed space, reducing the risk of contamination and increasing the yield. The coordinated structure also allows for control of granule density and size to meet production requirements. When preparing granules for certain special traditional Chinese medicines, the above process can be repeated by adding material through the feeding structure after fluidized bed granulation, facilitating control of the extract content and broadening its applicability. Multiple exhaust pipes 56 outlets are connected to a single air collection pipe 57 for exhaust, requiring only one fan 59 connected to the air collection pipe 57. This not only results in a simple and practical structure but also lower production costs and reduced exhaust pressure. When the pressure is high, the explosion relief valve 60 can assist in ventilation, improving equipment safety and increasing ventilation efficiency; the pneumatic butterfly valve 61 and pneumatic actuator 62 enable the exhaust pipe 56 to automatically exhaust air according to the pressure set by the pneumatic actuator 62; the cross partition divides the upper tank 4 into four dust collection chambers, each of which operates independently and is equipped with a separate exhaust pipe 56 for ventilation; the silencer 63 can eliminate some of the noise from the fan 59, reducing the noise during equipment operation; multiple first spray guns 64 are circumferentially distributed on the outer ring of the middle of the bottom tank 6, which improves the initial feeding speed and the feeding speed during stirring or other processes, resulting in faster mixing; when producing loose granules such as powder granules and capsule granules, the second spray gun 65 is used to spray liquid until the qualified granules are obtained, and the entire production process is completed in this equipment, completing the production of finished granules in one step.

[0031] Reference Figure 2-4 As shown, the cooperation of the convex strip 10 and the annular groove 11 makes the positioning of the left hoop 7 and the right hoop 8 more accurate when clamping the upper bucket 4 and the middle bucket 5, and the middle bucket 5 and the bottom bucket 6. The airbag is not easy to be misaligned, which ensures the sealing between the upper bucket 4 and the middle bucket 5, and between the middle bucket 5 and the bottom bucket 6. Moreover, the structure is more stable and firm. The cross-section of the convex strip 10 and the annular groove 11 is trapezoidal, which makes the contact surface between the two larger and the structural stability better. The handle 18 is set to facilitate the rotation of the nut 17, making the operation simple.

[0032] Reference Figure 4-7As shown, the existing fluidized bed dryer uses an arc-shaped groove 19, an air inlet 21, and an air duct 22 instead of the air outlet and channel. This results in a simpler, more compact structure with a smaller volume, reducing the space occupied by the air inlet structure. The arrangement of several air ducts 22 ensures more uniform heating and airflow for the material within the drum 2. Because the air ducts 22 are eccentrically positioned on the drum 2 with the center of the bottom drum 6 as the center, the hot airflow can rotate after entering the drum 2 through the air ducts 22, further enhancing the uniformity of heating and airflow for the material, resulting in more even drying and faster drying. The air inlets 21 are evenly distributed at the bottom of the arc-shaped groove 19, ensuring a smoother flow of air into the air ducts 22 and the drum 2, reducing the likelihood of turbulent hot airflow. The air ducts 22 are integrated into the lower part of the inner wall of the bottom drum 6. Furthermore, the bottom barrel 6 is equipped with a blocking device that can block the air duct 22. When stirring is being carried out in the barrel 2, the blocking device blocks the air duct 22, preventing materials from entering the air duct 22. This not only reduces energy consumption and saves resources, but also results in a smaller size and less space occupation. The piston rod 26 adopts a square shaft, which can prevent the piston rod 26 and the cylinder 25 from rotating relative to each other, thus preventing the inner end face of the cylinder 25 from being uneven with the inner side wall of the barrel 2. This also prevents the stirring blade from hitting the cylinder 25 when stirring is being carried out in the bottom barrel 6, resulting in better structural stability. In addition, the cylinder 25 can be positioned at any position in the air duct 22, which can control the inlet and outlet air volume and outlet speed of the air duct 22 to meet the needs of different materials with different air volume and speed, making it more versatile.

[0033] When the cylinder 25 needs to block the air duct 22, the first air duct 36 sends air into the first air chamber 30. At this time, the disc and piston rod 26 move outward and the disc abuts against the baffle 28. Then, the cylinder 25 moves inward under air pressure and the second step 32 abuts against the locking block 31. At this time, the inner end face of the cylinder 25 is flush with the inner side wall of the bottom barrel 6 and blocks the air duct 22. The air duct 22 cannot send air, and stirring can be carried out in the bottom barrel 6. When the air duct 22 needs to be filled with air, the first air duct 36 draws in air and the disc abuts against the first step 29. At the same time, the second air duct 37 sends air into the second air chamber 35, causing the cylinder 25 to move outward and disengage from the air duct 22. At this time, the hot air can enter the barrel 2 from the air duct 22 for boiling drying granulation.

[0034] Reference Figure 8-9As shown, hot air enters the barrel 2 through the air duct 22, flows from the annular surface 46 to the annular boss surface 45, and finally flows to the frustum-shaped base 40. During this process, the hot air rises upwards. Because the stirring blade includes a blade holder 41 and several blades 42 evenly spaced and inclined around the outer ring of the blade holder 41, and the blades 42 have downward-sloping inclined portions 43, these two inclined structures increase the distance the hot air lifts the material. Furthermore, these structures reduce the air resistance of the hot air flow, making it suitable for ordinary wet granulation machines or this equipment, thus offering greater applicability. The angled opening allows the hot air to enter the bottom barrel. When the material is continuously blown upwards at an angle, it achieves a near-boiling effect. When the blades 42 are set with 4 or 5 blades, when the blades 42 reach a certain speed, the material can be lifted into the air by centrifugal force, making it easier for the hot air to enter the barrel 2 and make more uniform contact with the material, resulting in uniform boiling and thus improving the boiling drying efficiency. The base 40 and the blade holder 41 are connected by annular slots 49 and annular steps 50, and finally fixed by locking nuts 53 and rotating shaft screws, which makes the structure more stable. The setting of multiple skeleton sealing rings 55 makes the sealing performance between the base 40 and the rotating shaft better. The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A novel three-component pellet mill, characterized by: The device includes a frame and a barrel mounted on the frame. The lower part of the barrel has a feeding structure, a discharging structure, and an air inlet structure. The barrel contains a stirring structure and a pelletizing knife. The upper part of the barrel is connected to a ventilation structure. The air inlet structure includes multiple arc-shaped grooves on the outer ring of the bottom barrel. The upper end of each arc-shaped groove is covered, and the bottom of each arc-shaped groove has several air inlets. The outer edge of the inner sidewall of the bottom barrel has an air duct communicating with the air inlets. The bottom barrel contains a blocking device to block the air duct. The bottom barrel also has an inlet communicating with the arc-shaped grooves, which is connected to a hot air cabinet via an air duct. The outer sidewall of the bottom barrel has a channel communicating with the air duct. The blocking device is an integrated cylinder located within the channel, and the integrated cylinder includes a cylinder body and a piston rod. The piston rod is a square shaft, and a chuck is provided on the outer side of the piston rod. The outer wall of the bottom barrel is provided with a baffle surrounding several channels. The outer side of the channel is provided with a first step to accommodate the chuck. A first air chamber is formed between the first step and the baffle to accommodate the movement of the disc and part of the piston rod. The cylinder moves within the channels and air ducts. A locking block is provided on the inner side of the piston rod. A second step is provided on the inner wall of the cylinder to abut against the locking block. A third step is provided on the inner side of the channel. A sliding sleeve is provided on the outer wall of the cylinder to align with the second step. The outer ring of the sliding sleeve is slidably connected to the inner wall of the channel. When the second step abuts against the locking block, the inner end face of the cylinder is flush with the inner wall of the bottom barrel and blocks the air duct. A second air chamber is formed between the third step and the sliding sleeve to accommodate the movement of the cylinder.

2. The novel three-component granulator according to claim 1, characterized in that: The barrel body includes an upper barrel, a middle barrel, and a bottom barrel arranged from top to bottom. The upper barrel and the middle barrel, as well as the middle barrel and the bottom barrel, are detachably connected by clamps. Each clamp includes a left clamp and a right clamp arranged opposite each other. The two ends of the left clamp are hinged to connecting rods, and the other end of the connecting rods is detachably connected to the right clamp. The inner walls of the left and right clamps are provided with multiple protruding strips along the circumferential direction. The outer rings of the upper barrel, the middle barrel, and the bottom barrel are provided with annular grooves for inserting the protruding strips. There are corresponding grooves between the upper barrel and the middle barrel, and between the middle barrel and the bottom barrel. Annular airbags are provided between the grooves.

3. The novel three-component granulator according to claim 2, characterized in that: The left hoop has a first lug at both ends and a second lug at both ends. One end of the connecting rod is hinged to the first lug. The second lug has an opening for inserting the other end of the connecting rod. The other end of the connecting rod is screwed to a nut that abuts against the outer surface of the second lug. The nut has a handle. The cross-section of the protrusion and the annular groove is trapezoidal.

4. A novel three-component granulator according to claim 1, 2, or 3, characterized in that: The lower end face of the bottom barrel is provided with a first air passage communicating with the first air chamber and a second air passage communicating with the second air chamber. The second air passage is located on the left side of the second step. Both the first and second air passages are equipped with pneumatic connectors. Multiple sealing rings are provided between the cylinder and the passage. The air passage is eccentrically set on the bottom barrel with the center of the bottom barrel as the center. The air inlets are evenly distributed at the bottom of the arc-shaped groove.

5. A novel three-component granulator according to claim 1, characterized in that: The stirring structure includes a base located at the center of the bottom of the bottom barrel. A stirring blade is detachably mounted on the base. The stirring blade includes a blade holder and several blades that are circumferentially and inclinedly arranged on the outer ring of the blade holder. The blades include an inclined part and a horizontal part that are connected to each other from the inside out. The inclined part is inclined downward. The bottom of the bottom barrel is provided with an annular boss surface that cooperates with the inclined part and an annular surface that cooperates with the horizontal part.

6. A novel three-component granulator according to claim 5, characterized in that: The horizontal part has an upward-sloping ramp on its outer side, and the bottom of the bottom barrel has an annular slope that matches the ramp. The ramp and the annular slope form an angle from bottom to top. The base is frustum-shaped, and the inclined part is a ramp or an arc-shaped slope. The base has an annular slot, and the lower end of the blade holder has an annular step for inserting into the annular slot. The pelletizing blade is driven by a first motor, and the stirring blade is driven by a second motor. The center of the base and the blade holder has a through hole for inserting the motor shaft of the second motor. The blade holder has a locking nut that is screwed to the rotating shaft. The inner wall of the through hole of the base has an annular groove, and multiple skeleton sealing rings that abut against the outer ring of the rotating shaft are provided in the annular groove. The number of blades is 4-5.

7. A novel three-component granulator according to claim 1, characterized in that: The ventilation structure includes a partition inside the upper tank, which divides the upper tank into multiple dust collection chambers. Each dust collection chamber is equipped with an exhaust pipe. The outlets of the multiple exhaust pipes are all located on the same side of the upper tank, and the outlets of the multiple exhaust pipes are connected to a collection pipe. The other end of the collection pipe is connected to the inlet of the fan through a ventilation pipe. An explosion relief valve is connected to the upper end of the outlet side of the collection pipe. Each exhaust pipe outlet is connected to a pneumatic butterfly valve. The inlet side of the collection pipe is provided with an interface communicating with the pneumatic butterfly valve. The pneumatic butterfly valve is equipped with a pneumatic actuator. The partition is a cross partition, which divides the upper tank into four dust collection chambers. A silencer is provided at the outlet of the fan.

8. A novel three-component pellet mill according to claim 2 or 3, characterized in that: The feeding structure includes multiple first spray guns connected to the middle of the bottom barrel, and the multiple first spray guns are circumferentially distributed on the outer ring of the middle of the bottom barrel. A second spray gun aligned with the bottom barrel is inserted through the middle of the middle barrel. The discharging structure includes a guide tube connected to the lower part of one side of the bottom barrel. A discharging cylinder is provided at the other end of the guide tube, and a discharging pipe is connected to the lower end of the guide tube. A baffle plate that fits against the inner wall of the bottom barrel is provided on the piston rod of the discharging cylinder.

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