Process for producing granules of a wdg formulation and apparatus therefor

Abstract

The application discloses a WDG dosage form granule production process and a production device thereof, and relates to the technical field of granule production; the application comprises the following steps: S1, adding materials in a receiving kettle into a wet mixing device to perform wet processing on the materials; and S2, feeding the materials after wet processing into an extrusion granulator through a feeder, extruding and granulating the materials by the extrusion granulator to form WDG; in the application, the original temporary storage kettle is changed into a wet mixing device, a high-speed mixer is cancelled, a material distributor is arranged in the wet mixing device after wet processing, one device process is reduced in the production process, the materials are processed by wet processing through the wet mixing device, the materials are slowly bonded in the wet processing process without dust floating, the production environment is improved, the semi-finished WDG is dried by adopting a vertical screw vibration fluidized bed, the vertical screw vibration fluidized bed has high heat energy utilization, the drying efficiency of the semi-finished WDG is improved, and the preparation efficiency of the finished WDG dosage form granule is improved.

Description

Technical Field

[0001] This invention relates to the field of granule production technology, specifically to a WDG granule production process and production apparatus. Background Technology

[0002] Granules: Granules are a solid dosage form obtained by mixing and granulating the active pharmaceutical ingredient with carriers, binders, dispersants, wetting agents, stabilizers, and other adjuvants. Their performance requirements mainly include fineness, uniformity, storage stability, hardness, and disintegration properties. Granules have the largest particle size among solid dosage forms and offer advantages such as ease of use, minimal outward diffusion, and long-lasting efficacy. Floating granules, microparticles, and microcapsules have been developed based on granules. However, existing technologies for producing WDG granules present the following problems:

[0003] 1. Currently, in the production of WDG granules, existing technologies generate dust during the high-speed rotation of materials, which affects the production environment. At the same time, the production process cannot be reduced, resulting in low production capacity and thus affecting the preparation efficiency of WDG granules.

[0004] 2. Meanwhile, in the production of WDG granules, existing technologies, while humidifying the material, do not allow the droplets to fully contact the material, nor do they allow for extrusion and stirring of the material. This results in poor humidification of the material, which in turn affects the quality of the WDG granules subsequently prepared. To address these issues, the inventors propose a WDG granule production process and its production apparatus. Summary of the Invention

[0005] To address the problems of high dust levels, low production capacity, and poor material humidification during the production of WDG granules, the present invention aims to provide a WDG granule production process and production apparatus.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a production process for WDG granules, comprising the following steps:

[0007] S1. Add the material from the receiving vessel into the wet mixing equipment for wet processing;

[0008] S2. The wet-processed material is fed into the extrusion granulator through the feeder. The extrusion granulator extrudes and granulates the material to form WDG agent.

[0009] S3. The formed WDG agent enters a vertical spiral vibrating fluidized bed for drying and processing. After drying, the finished WDG granules are obtained.

[0010] Preferably, in S3, the vertical spiral vibrating fluidized bed uses 8 layers of spiral bed plates, and the contact time with WDG agent is 15-20 minutes. The vertical spiral vibrating fluidized bed uses a DN40 steam inlet pipe with a flow rate of 600 kg / h.

[0011] A WDG granule production apparatus includes a wet mixing device comprising a mixing vessel, a feed pipe fixedly installed on the outer wall of the mixing vessel, a fixed plate fixedly installed on the inner wall of the mixing vessel, a screw feeder fixedly installed at the axis of the fixed plate, a discharge pipe fixedly installed at the bottom of the mixing vessel, the end of the screw feeder away from the fixed plate being fixedly connected to one end of the discharge pipe, an equipment sleeve fixedly installed on the outer wall of the mixing vessel, an extrusion mechanism inside the mixing vessel, a stirring mechanism inside the mixing vessel, and a humidification mechanism inside the equipment sleeve.

[0012] Preferably, the extrusion mechanism includes an extrusion disc, which is coaxial with a fixed disc. An annular array of extrusion protrusions is fixedly installed on the lower surface of the extrusion disc. A U-shaped seat is fixedly installed on the side of the extrusion disc away from the extrusion protrusions. A first rotating shaft is rotatably installed on the inner wall of the U-shaped seat. A push rod is fixedly installed on the outer wall of the first rotating shaft. A first rotating rod is rotatably installed on the inner wall of the mixing vessel. A rotating disc is fixedly installed at one end of the first rotating rod. A drive rod is fixedly installed on the side of the rotating disc away from the first rotating rod. The end of the drive rod away from the rotating disc is rotatably connected to one end of the push rod.

[0013] Preferably, the inner wall of the mixing vessel has two guide grooves, and guide blocks are slidably connected to the inner walls of the two guide grooves. L-shaped connecting rods are fixedly installed on opposite sides of the two guide blocks, and the end of the L-shaped connecting rod away from the guide block is fixedly connected to the upper surface of the extrusion plate.

[0014] Preferably, the stirring mechanism includes a stirring rod, one end of which is fixedly mounted with a base. Two rotating plates are fixedly mounted on the outer wall of the base. A ring-shaped array of stirring blades is fixedly mounted on the surface of each of the two rotating plates. A hollow rod is rotatably mounted at the axis of the extrusion disc. The end of the stirring rod away from the base is in movable contact with the inner wall of the hollow rod. A transmission rod is provided on the side of the extrusion disc away from the extrusion protrusion. A bevel gear is fixedly mounted on one end of the transmission rod and the end of the hollow rod away from the extrusion disc. The two bevel gears mesh with each other. A transmission gear is fixedly mounted on the other end of the transmission rod. A toothed plate is fixedly mounted on the inner wall of the mixing vessel. The toothed plate and the transmission gear are meshed together.

[0015] Preferably, a support rod is fixedly installed on the side of the extrusion disc away from the extrusion protrusion, and a rotating sleeve is fixedly installed on the end of the support rod away from the extrusion disc. The transmission rod passes through the rotating sleeve and is rotatably connected to the inner wall of the rotating sleeve.

[0016] Preferably, a telescopic rod is fixedly installed on the inner wall of the hollow rod, the end of the stirring rod away from the base is fixedly connected to the piston end of the telescopic rod, a telescopic spring is movably sleeved on the outer wall of the telescopic rod, one end of the telescopic spring is fixedly connected to the inner wall of the hollow rod, and the end of the stirring rod away from the base is fixedly connected to the other end of the telescopic spring.

[0017] Preferably, the humidification mechanism includes an atomizing nozzle. Two fixed rods are fixedly installed on the inner wall of the equipment sleeve, and a fixed frame is fixedly installed between the two fixed rods. A second rotating shaft is rotatably installed on one side of the fixed frame, and a swing rod is provided on one side of the fixed frame. The swing rod passes through the second rotating shaft and is fixedly connected to it. A connecting rod is fixedly installed at one end of the swing rod, and the end of the connecting rod away from the swing rod is fixedly connected to the end of the atomizing nozzle. An arc-shaped panel is fixedly installed at the end of the swing rod away from the connecting rod. An arc-shaped groove is formed on the side of the arc-shaped panel away from the swing rod. A fixed... The device includes a servo motor, with a second rotating rod fixedly mounted on the drive output end of the servo motor. The end of the device sleeve away from the mixing vessel is rotatably connected to the second rotating rod. The end of the second rotating rod away from the servo motor is rotatably connected to the other side of the fixed frame. A crank is fixedly mounted on the end of the second rotating rod near the fixed frame. A protruding rod is fixedly mounted on the end of the crank away from the second rotating rod. The end of the protruding rod away from the crank is in movable contact with the inner wall of the arc groove. Synchronous pulleys are fixedly mounted on both the end of the second rotating rod near the servo motor and the end of the first rotating rod away from the rotating disk. A synchronous belt drives between the two synchronous pulleys.

[0018] Preferably, a connecting hose is fixedly installed at one end of the atomizing nozzle, the connecting hose passes through the equipment sleeve and is movably inserted into one end of the equipment sleeve, a fixing block is fixedly installed on the outer wall of the servo motor, and the end of the equipment sleeve away from the mixing vessel is fixedly connected to one side of the fixing block.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In this invention, finished WDG granules are prepared through S1-S3. The original temporary storage vessel is replaced with a wet mixing device, eliminating the high-speed mixer. A material distributor is connected after the wet mixing process in the wet mixing device, reducing one equipment step in the production process. The material is processed by wet mixing, which is slow and binds without dust, improving the production environment. The semi-finished WDG agent is dried by using a vertical spiral vibrating fluidized bed. The vertical spiral vibrating fluidized bed has high thermal energy utilization, thereby improving the drying efficiency of the semi-finished WDG agent and thus improving the preparation efficiency of finished WDG granules.

[0021] 2. In this invention, the spiral bed plate of the vertical spiral vibrating fluidized bed adopts a fish-scale hole spiral disk, which is beneficial to improve the fluidization effect and enhance the thermal efficiency, making it suitable for 100-200 mesh powder and 80-120 mesh micro particles.

[0022] 3. By adding material to the upper surface of the fixed plate and driving the extrusion protrusion to move up and down, the extrusion protrusion extrudes the material on the fixed plate. Combined with the rotation of the stirring blade, the stirring blade mixes the material on the fixed plate, thus conveniently realizing the extrusion and mixing of the material, making the material in a dispersed state, which facilitates the subsequent full humidification treatment of the material.

[0023] 4. By driving the swing rod to swing back and forth, the swing rod, through the connecting rod, causes the atomizing nozzle to swing back and forth synchronously. While the atomizing nozzle swings back and forth, it sprays the atomized droplets evenly onto the surface of the material, so that the material is fully wetted. This facilitates the humidification of the material, making the granules formed by subsequent extrusion granulation finer and more delicate, thereby effectively improving the quality of the prepared granules. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the wet mixing equipment of the present invention.

[0026] Figure 2 This is another overall structural schematic diagram of the wet mixing equipment of the present invention.

[0027] Figure 3 This is a cross-sectional structural diagram of the mixing vessel of the present invention.

[0028] Figure 4 This is a schematic diagram showing the connection between the extrusion mechanism, stirring mechanism, and humidification mechanism of the present invention and the fixed plate.

[0029] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part A in the diagram.

[0030] Figure 6 For the present invention Figure 4 Enlarged schematic diagram of part B in the diagram.

[0031] Figure 7 For the present invention Figure 4 Enlarged schematic diagram of part C in the diagram.

[0032] Figure 8 This is a schematic diagram showing the connection between the stirring rod, the hollow rod, and the extrusion disc of the present invention.

[0033] Figure 9 This is a cross-sectional structural diagram of the hollow rod, extrusion disc, and extrusion protrusion of the present invention.

[0034] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of part D in the diagram.

[0035] In the diagram: 10. Wet mixing equipment; 1. Mixing vessel; 11. Feed pipe; 12. Fixed plate; 13. Screw feeder; 14. Discharge pipe; 15. Equipment sleeve; 2. Extrusion mechanism; 21. Extrusion plate; 22. Guide groove; 23. Guide block; 24. L-shaped connecting rod; 25. Extrusion protrusion; 26. U-shaped seat; 27. First rotating shaft; 28. Push rod; 29. ​​First rotating rod; 3. Rotating plate; 31. Drive rod; 4. Stirring mechanism; 41. Stirring rod; 42. Base; 43. Rotating plate; 44. Stirring blade; 45. 46. ​​Hollow rod; 47. Transmission rod; 48. Support rod; 49. Rotating sleeve; 50. Bevel gear; 61. Transmission gear; 52. Tooth plate; 53. Telescopic rod; 64. Telescopic spring; 65. Humidification mechanism; 66. Atomizing nozzle; 67. Connecting hose; 68. Fixing rod; 69. Fixing frame; 60. Second rotating shaft; 61. Swing rod; 62. Connecting rod; 73. Arc panel; 74. Arc groove; 75. Servo motor; 76. Fixing block; 77. Second rotating rod; 78. Crank; 79. Protruding rod; 70. Synchronous pulley; 71. Synchronous belt. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Figure 1-10 As shown, the present invention provides a manufacturing process for WDG granules, comprising the following steps:

[0038] S1. The material in the receiving vessel is added to the wet mixing equipment 10 for wet processing.

[0039] S2. The wet-processed material is fed into the extrusion granulator through the feeder. The extrusion granulator extrudes and granulates the material to form WDG agent.

[0040] S3. The formed WDG agent enters a vertical spiral vibrating fluidized bed for drying and processing. After drying, the finished WDG granules are obtained.

[0041] In S3, the vertical spiral vibrating fluidized bed uses 8 layers of spiral bed plates, and the contact time with WDG agent is 15-20 minutes. The vertical spiral vibrating fluidized bed uses a DN40 steam inlet pipe, with a flow rate of 600 kg / h.

[0042] By adopting the above technical solution, the finished WDG granules are prepared through S1-S3. The original temporary storage vessel is replaced by a wet mixing device 10, eliminating the high-speed mixer. A material distributor is connected after the wet mixing process in the wet mixing device 10, reducing one equipment step in the production process. The wet mixing device 10 performs wet processing on the materials. The wet process is slow and adhesive with no dust emission, improving the production environment. A vertical spiral vibrating fluidized bed is used to dry the semi-finished WDG agent. The vertical spiral vibrating fluidized bed has high thermal energy utilization, thereby improving the drying efficiency of the semi-finished WDG agent and thus improving the preparation efficiency of the finished WDG granules. At the same time, the spiral bed plate in the vertical spiral vibrating fluidized bed adopts a fish scale hole spiral disk, which is conducive to improving the fluidization effect and enhancing the thermal efficiency, making it suitable for 100-200 mesh powder and 80-120 mesh micro particles.

[0043] A WDG granule production apparatus includes a wet mixing device 10 comprising a mixing vessel 1, a feed pipe 11 fixedly installed on the outer wall of the mixing vessel 1, a fixed plate 12 fixedly installed on the inner wall of the mixing vessel 1, a screw feeder 13 fixedly installed at the axis of the fixed plate 12, a discharge pipe 14 fixedly installed at the bottom end of the mixing vessel 1, one end of the screw feeder 13 away from the fixed plate 12 being fixedly connected to one end of the discharge pipe 14, an equipment sleeve 15 fixedly installed on the outer wall of the mixing vessel 1, an extrusion mechanism 2 provided inside the mixing vessel 1, a stirring mechanism 4 provided inside the mixing vessel 1, and a humidification mechanism 6 provided inside the equipment sleeve 15.

[0044] By adopting the above technical solution, when the material enters the interior of the mixing vessel 1 through the feed pipe 11, the material falls onto the upper surface of the fixed plate 12. By setting the extrusion mechanism 2 and the stirring mechanism 4, the stirring mechanism 4 mixes and stirs the material on the upper surface of the fixed plate 12, and the extrusion mechanism 2 extrudes the material. By setting the humidification mechanism 6, the humidification mechanism 6 makes the atomized droplets evenly contact the material on the fixed plate 12, thereby achieving full mixing and full wetting of the material, thereby improving the effect of wet processing of the material. At the same time, it makes the granules formed by subsequent extrusion granulation more fine and delicate.

[0045] The extrusion mechanism 2 includes an extrusion disc 21, which is coaxial with a fixed disc 12. An annular array of extrusion protrusions 25 are fixedly installed on the lower surface of the extrusion disc 21. A U-shaped seat 26 is fixedly installed on the side of the extrusion disc 21 away from the extrusion protrusions 25. A first rotating shaft 27 is rotatably installed on the inner wall of the U-shaped seat 26. A push rod 28 is fixedly installed on the outer wall of the first rotating shaft 27. A first rotating rod 29 is rotatably installed on the inner wall of the mixing vessel 1. A rotating disc 3 is fixedly installed at one end of the first rotating rod 29. A drive rod 31 is fixedly installed on the side of the rotating disc 3 away from the first rotating rod 29. The end of the drive rod 31 away from the rotating disc 3 is rotatably connected to the end of the push rod 28.

[0046] By adopting the above technical solution, the first rotating rod 29 is driven to rotate, and the first rotating rod 29 causes the driving rod 31 to rotate around the axis of the rotating disk 3 via the rotating disk 3. The driving rod 31 causes the extrusion disk 21 to reciprocate up and down via the push rod 28, the first rotating shaft 27 and the U-shaped seat 26. The extrusion disk 21 causes the extrusion protrusion 25 to reciprocate vertically up and down. When the extrusion protrusion 25 contacts the material on the fixed disk 12, the extrusion protrusion 25 extrudes the material.

[0047] The inner wall of the mixing vessel 1 has two guide grooves 22. The inner walls of the two guide grooves 22 are slidably connected to guide blocks 23. L-shaped connecting rods 24 are fixedly installed on opposite sides of the two guide blocks 23. The end of the L-shaped connecting rod 24 away from the guide block 23 is fixedly connected to the upper surface of the extrusion plate 21.

[0048] By adopting the above technical solution, and by setting the guide groove 22, guide block 23 and L-shaped connecting rod 24, the guide block 23 keeps the extrusion plate 21 moving up and down in a vertical direction through the L-shaped connecting rod 24.

[0049] The stirring mechanism 4 includes a stirring rod 41, one end of which is fixedly mounted with a base 42. Two rotating plates 43 are fixedly mounted on the outer wall of the base 42. The surfaces of the two rotating plates 43 are fixedly mounted with stirring blades 44 arranged in a ring. A hollow rod 45 is rotatably mounted at the axis of the extrusion plate 21. The end of the stirring rod 41 away from the base 42 is in contact with the inner wall of the hollow rod 45. A transmission rod 46 is provided on the side of the extrusion plate 21 away from the extrusion protrusion 25. A bevel gear 49 is fixedly mounted on one end of the transmission rod 46 and the end of the hollow rod 45 away from the extrusion plate 21. The two bevel gears 49 mesh with each other. A transmission gear 5 is fixedly mounted on the other end of the transmission rod 46. A toothed plate 51 is fixedly mounted on the inner wall of the mixing vessel 1. The toothed plate 51 and the transmission gear 5 are meshed together.

[0050] By adopting the above technical solution, when the extrusion disc 21 is raised and lowered vertically, the extrusion disc 21 causes the hollow rod 45, the transmission rod 46 and the transmission gear 5 to rise and fall synchronously. The toothed plate 51 drives the transmission gear 5 to rotate, the transmission gear 5 causes the transmission rod 46 to rotate, the transmission rod 46 causes the hollow rod 45 to rotate through two bevel gears 49, the hollow rod 45 causes the stirring rod 41 to rotate, the stirring rod 41 causes the rotating plate 43 and the stirring blade 44 to rotate through the base 42, and the stirring blade 44 mixes and stirs the material on the upper surface of the fixed disc 12.

[0051] A support rod 47 is fixedly installed on the side of the extrusion disc 21 away from the extrusion protrusion 25. A rotating sleeve 48 is fixedly installed on the end of the support rod 47 away from the extrusion disc 21. A transmission rod 46 passes through the rotating sleeve 48 and is rotatably connected to the inner wall of the rotating sleeve 48.

[0052] By adopting the above technical solution, and by setting up the support rod 47 and the rotating sleeve 48, when the extrusion plate 21 is raised and lowered vertically, the extrusion plate 21 causes the transmission rod 46 to rise and fall synchronously through the support rod 47 and the rotating sleeve 48. At the same time, the support rod 47 supports the transmission rod 46 through the rotating sleeve 48.

[0053] A telescopic rod 52 is fixedly installed on the inner wall of the hollow rod 45. The end of the stirring rod 41 away from the base 42 is fixedly connected to the piston end of the telescopic rod 52. A telescopic spring 53 is movably sleeved on the outer wall of the telescopic rod 52. One end of the telescopic spring 53 is fixedly connected to the inner wall of the hollow rod 45, and the end of the stirring rod 41 away from the base 42 is fixedly connected to the other end of the telescopic spring 53.

[0054] By adopting the above technical solution, when the extrusion plate 21 descends vertically, the extrusion plate 21 causes the hollow rod 45 to descend synchronously. Affected by the stirring rod 41, the telescopic rod 52 and the telescopic spring 53 contract. When the extrusion plate 21 rises vertically, the extrusion plate 21 causes the hollow rod 45 to rise synchronously, and the telescopic rod 52 and the telescopic spring 53 extend. At the same time, the telescopic rod 52 and the telescopic spring 53 keep the bottom end of the stirring rod 41 in contact with the upper surface of the fixed plate 12. Meanwhile, when the hollow rod 45 rotates, the hollow rod 45 causes the stirring rod 41 to rotate synchronously through the telescopic rod 52 and the telescopic spring 53.

[0055] The humidification mechanism 6 includes an atomizing nozzle 61. Two fixed rods 63 are fixedly installed on the inner wall of the equipment sleeve 15. A fixed frame 64 is fixedly installed between the two fixed rods 63. A second rotating shaft 65 is rotatably installed on one side of the fixed frame 64. A swing rod 66 is provided on one side of the fixed frame 64. The swing rod 66 passes through the second rotating shaft 65 and is fixedly connected to the second rotating shaft 65. A connecting rod 67 is fixedly installed on one end of the swing rod 66. The end of the connecting rod 67 away from the swing rod 66 is fixedly connected to the end of the atomizing nozzle 61. An arc panel 68 is fixedly installed on the end of the swing rod 66 away from the connecting rod 67. An arc groove 69 is opened on the side of the arc panel 68 away from the swing rod 66. A servo is fixedly installed on the end of the equipment sleeve 15 away from the mixing vessel 1. The drive output end of the servo motor 7 is fixedly mounted with a second rotating rod 72. The end of the equipment sleeve 15 away from the mixing vessel 1 is rotatably connected to the second rotating rod 72. The end of the second rotating rod 72 away from the servo motor 7 is rotatably connected to the other side of the fixed frame 64. A crank 73 is fixedly mounted on the end of the second rotating rod 72 near the fixed frame 64. A protruding rod 74 is fixedly mounted on the end of the crank 73 away from the second rotating rod 72. The end of the protruding rod 74 away from the crank 73 is in movable contact with the inner wall of the arc groove 69. Synchronous pulleys 75 are fixedly mounted on both the end of the second rotating rod 72 near the servo motor 7 and the end of the first rotating rod 29 away from the rotating disk 3. A synchronous belt 76 is connected between the two synchronous pulleys 75.

[0056] By adopting the above technical solution, the servo motor 7 is turned on, and the drive shaft of the servo motor 7 causes the second rotating rod 72 to rotate. The second rotating rod 72 causes the convex rod 74 to rotate around the axis of the second rotating rod 72 via the crank 73. The convex rod 74 causes the arc panel 68 and the swing rod 66 to swing back and forth around the axis of the second rotating shaft 65 via the arc groove 69. The swing rod 66 causes the atomizing nozzle 61 to swing back and forth synchronously via the connecting rod 67. While the atomizing nozzle 61 swings back and forth, it sprays the atomized droplets evenly onto the surface of the material, so that the material is fully wetted.

[0057] A connecting hose 62 is fixedly installed at one end of the atomizing nozzle 61. The connecting hose 62 passes through the equipment sleeve 15 and is movably inserted into one end of the equipment sleeve 15. A fixing block 71 is fixedly installed on the outer wall of the servo motor 7. The end of the equipment sleeve 15 away from the mixing vessel 1 is fixedly connected to one side of the fixing block 71.

[0058] By adopting the above technical solution, when the connecting hose 62 is connected to the external water pump, the external water pump delivers humidifying water to the atomizing nozzle 61 through the connecting hose 62. By setting the fixing block 71, the fixing block 71 supports and fixes the servo motor 7, thereby improving the stability of the servo motor 7.

[0059] Working principle: In this invention, finished WDG granules are prepared through S1-S3. The original temporary storage vessel is replaced by a wet mixing device 10, eliminating the need for a high-speed mixer. A material distributor is connected after the wet mixing process in the wet mixing device 10, reducing one equipment step in the production process. The wet mixing device 10 performs wet processing on the materials. The wet process is slow and adhesive with no dust emission, improving the production environment. The semi-finished WDG agent is dried by using a vertical spiral vibrating fluidized bed. The vertical spiral vibrating fluidized bed has high thermal energy utilization, thereby improving the drying efficiency of the semi-finished WDG agent and thus improving the preparation efficiency of finished WDG granules.

[0060] In this invention, the spiral bed plate of the vertical spiral vibrating fluidized bed adopts a fish-scale hole spiral disk, which is beneficial to improve the fluidization effect and enhance the thermal efficiency, making it suitable for 100-200 mesh powder and 80-120 mesh micro particles.

[0061] When it is necessary to humidify the material, the staff first adds the material to be humidified into the mixing vessel 1 through the feed pipe 11. The added material falls onto the upper surface of the fixed plate 12. At the same time, the end of the connecting hose 62 is connected to the external water pump. The external water pump delivers the humidification water to the atomizing nozzle 61 through the connecting hose 62.

[0062] At this time, the staff simultaneously turns on the servo motor 7 and the atomizing nozzle 61. The drive shaft of the servo motor 7 causes the second rotating rod 72 to rotate. The second rotating rod 72 causes the first rotating rod 29 to rotate through two synchronous pulleys 75 and a synchronous belt 76. The first rotating rod 29 causes the drive rod 31 to rotate around the axis of the rotating disk 3 through the rotating disk 3. The drive rod 31 causes the extrusion disk 21 to reciprocate up and down through the push rod 28, the first rotating shaft 27 and the U-shaped seat 26. The extrusion disk 21 causes multiple extrusion protrusions 25 to reciprocate vertically up and down. When the multiple extrusion protrusions 25 come into contact with the material on the fixed disk 12, the extrusion protrusions 25 extrude the material.

[0063] At the same time, the extrusion disc 21 causes the hollow rod 45, transmission rod 46 and transmission gear 5 to rise and fall synchronously. The toothed plate 51 drives the transmission gear 5 to rotate, the transmission gear 5 causes the transmission rod 46 to rotate, the transmission rod 46 causes the hollow rod 45 to rotate through two bevel gears 49, the hollow rod 45 causes the stirring rod 41 to rotate through the telescopic rod 52 and the telescopic spring 53, the stirring rod 41 causes the two rotating plates 43 and multiple stirring blades 44 to rotate through the base 42, and the multiple stirring blades 44 mix and stir the material on the upper surface of the fixed disc 12 while rotating, thus conveniently realizing the extrusion and mixing of the material, so that the material is in a dispersed state, which facilitates the subsequent full humidification treatment of the material;

[0064] Meanwhile, the second rotating rod 72 causes the convex rod 74 to rotate around the axis of the second rotating rod 72 via the crank 73. The convex rod 74 causes the arc panel 68 and the swing rod 66 to swing back and forth around the axis of the second rotating shaft 65 via the arc groove 69. The swing rod 66 causes the atomizing nozzle 61 to swing back and forth synchronously via the connecting rod 67. While the atomizing nozzle 61 swings back and forth, it sprays the atomized droplets evenly onto the surface of the material, so that the material is fully wetted. This facilitates the humidification of the material, making the granules formed by subsequent extrusion granulation finer and more delicate, thereby effectively improving the quality of the prepared granules.

[0065] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A WDG formulation granule production device comprising a wet mixing apparatus (10), characterized in that, The wet mixing equipment (10) comprises a mixing kettle (1), an inlet pipe (11) is fixedly installed on the outer wall of the mixing kettle (1), a fixed disc (12) is fixedly installed on the inner wall of the mixing kettle (1), a screw feeder (13) is fixedly installed at the shaft center of the fixed disc (12), a discharge pipe (14) is fixedly installed at the bottom end of the mixing kettle (1), one end of the screw feeder (13) away from the fixed disc (12) is fixedly connected with one end of the discharge pipe (14), an equipment sleeve (15) is fixedly installed on the outer wall of the mixing kettle (1), an extrusion mechanism (2) is arranged in the mixing kettle (1), a stirring mechanism (4) is further arranged in the mixing kettle (1), a humidifying mechanism (6) is arranged in the equipment sleeve (15). The extrusion mechanism (2) comprises an extrusion disc (21), the extrusion disc (21) is coaxial with the fixed disc (12), a plurality of extrusion protrusions (25) in annular array are fixedly installed on the lower surface of the extrusion disc (21), a U-shaped seat (26) is fixedly installed on the side of the extrusion disc (21) away from the extrusion protrusions (25), a first rotating shaft (27) is rotatably installed on the inner wall of the U-shaped seat (26), a push rod (28) is fixedly installed on the outer wall of the first rotating shaft (27), a first rotating rod (29) is rotatably installed on the inner wall of the mixing kettle (1), a rotating disc (3) is fixedly installed at one end of the first rotating rod (29), a driving rod (31) is fixedly installed on the side of the rotating disc (3) away from the first rotating rod (29), one end of the driving rod (31) away from the rotating disc (3) is rotatably connected with one end of the push rod (28). Two guide grooves (22) are formed in the inner wall of the mixing kettle (1), guide blocks (23) are slidably connected to the inner walls of the two guide grooves (22), L-shaped connecting rods (24) are fixedly installed on the opposite sides of the two guide blocks (23), and one end of the L-shaped connecting rod (24) away from the guide block (23) is fixedly connected with the upper surface of the extrusion disc (21).

2. The WDG granule production device according to claim 1, wherein The stirring mechanism (4) comprises a stirring rod (41), a base (42) is fixedly installed at one end of the stirring rod (41), two rotating plates (43) are fixedly installed on the outer wall of the base (42), a plurality of stirring blades (44) in annular array are fixedly installed on the surfaces of the two rotating plates (43), a hollow rod (45) is rotatably installed at the shaft center of the extrusion disc (21), the stirring rod (41) movably contacts the inner wall of the hollow rod (45) away from the base (42), a transmission rod (46) is arranged on the side of the extrusion disc (21) away from the extrusion protrusions (25), a bevel gear (49) is fixedly installed at one end of the transmission rod (46) and one end of the hollow rod (45) away from the extrusion disc (21), the two bevel gears (49) are meshed with each other, a transmission gear (5) is fixedly installed at the other end of the transmission rod (46), a toothed plate (51) is fixedly installed on the inner wall of the mixing kettle (1), and the toothed plate (51) is meshedly connected with the transmission gear (5).

3. The WDG granule production device according to claim 2, wherein The side, away from the extrusion protrusion (25), of the extrusion disc (21) is fixedly provided with a supporting rod (47), one end, away from the extrusion disc (21), of the supporting rod (47) is fixedly provided with a rotating sleeve (48), and the transmission rod (46) penetrates through the rotating sleeve (48) and is rotationally connected with the inner wall of the rotating sleeve (48).

4. The WDG granule production device according to claim 2, wherein The inner wall of the hollow rod (45) is fixedly provided with a telescopic rod (52), one end, away from the base (42), of the stirring rod (41) is fixedly connected with the piston end of the telescopic rod (52), the outer wall of the telescopic rod (52) movably sleeves a telescopic spring (53), one end of the telescopic spring (53) is fixedly connected with the inner wall of the hollow rod (45), and the other end of the telescopic spring (53) is fixedly connected with the stirring rod (41), away from the base (42).

5. The WDG granule production device according to claim 1, wherein The humidifying mechanism (6) comprises an atomizing nozzle (61), the inner wall of the equipment sleeve (15) is fixedly provided with two fixed rods (63), the two fixed rods (63) are fixedly provided with a fixed frame (64) therebetween, one side of the fixed frame (64) is rotationally provided with a second rotating shaft (65), one side of the fixed frame (64) is provided with an oscillating rod (66), the oscillating rod (66) penetrates through the second rotating shaft (65) and is fixedly connected with the second rotating shaft (65), one end of the oscillating rod (66) is fixedly provided with a connecting rod (67), one end of the connecting rod (67), away from the oscillating rod (66), is fixedly connected with one end of the atomizing nozzle (61), one end of the oscillating rod (66), away from the connecting rod (67), is fixedly provided with an arc surface plate (68), one side of the arc surface plate (68), away from the oscillating rod (66), is provided with an arc surface groove (69), one end of the equipment sleeve (15), away from the mixing kettle (1), is fixedly provided with a servo motor (7), the driving output end of the servo motor (7) is fixedly provided with a second rotating rod (72), one end of the equipment sleeve (15), away from the mixing kettle (1), is rotationally connected with the second rotating rod (72), one end of the second rotating rod (72), away from the servo motor (7), is rotationally connected with the other side of the fixed frame (64), one end of the second rotating rod (72), close to the fixed frame (64), is fixedly provided with a crank (73), one end of the crank (73), away from the second rotating rod (72), is fixedly provided with a convex rod (74), one end of the convex rod (74), away from the crank (73), movably contacts with the inner wall of the arc surface groove (69), and one end of the second rotating rod (72), close to the servo motor (7), is fixedly provided with a synchronous wheel (75), and one end of the first rotating rod (29), away from the rotating disc (3), is fixedly provided with a synchronous wheel (75), and the two synchronous wheels (75) are transmissionally connected with a synchronous belt (76).

6. The WDG granule production device according to claim 5, wherein One end of the atomizing nozzle (61) is fixedly provided with a connecting hose (62), the connecting hose (62) penetrates through the equipment sleeve (15) and movably inserts into one end of the equipment sleeve (15), the outer wall of the servo motor (7) is fixedly provided with a fixed block (71), and one end of the equipment sleeve (15), away from the mixing kettle (1), is fixedly connected with one side of the fixed block (71).

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