A modulation device for preparing pullulan hollow capsules

Abstract

The invention provides a modulation device for proportioning pullulan hollow capsules, which relates to the technical field of hollow capsule production. The device comprises a storage barrel, a transmission branch pipe, a mixing pipe and a modulation box. A conveying assembly is arranged at the bottom end of each storage barrel. The conveying assembly comprises a metering solenoid valve, a discharge pipe, a rotating outer sleeve and a rotating outer sleeve. A mixing mechanism is arranged inside the mixing pipe. The mixing mechanism comprises a docking cover plate, a transmission rod, a stirring blade and a material slow flow ring. The driving rod drives a conical gear ring to rotate. The rotating outer sleeve is sleeved on the outer side of the discharge pipe. Two arc grooves are also arranged on the outer side of the rotating outer sleeve. The rotating outer sleeve continuously rotates at a uniform speed on the outer side of the discharge pipe, so that pullulan and a plasticizer intermittently enter the inside of the discharge pipe. When intermittent feeding is adopted, solid particles have more time to disperse and move in the pipeline, so as to prevent pullulan from accumulating inside the pipeline to form a blockage.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow capsule production, and more specifically, particularly relates to a modulation device for proportioning pullulan hollow capsules. Background Art

[0002] Pullulan hollow capsules are hollow capsules made of pullulan as the main raw material. Pullulan is first produced by microbial fermentation, then dissolved in an appropriate solvent, filtered, defoamed, and then processed by a mold for a series of process steps such as dipping, drying, and demolding to finally make hollow capsules. In actual applications, the equipment usually requires the following technologies:

[0003] 1. Batching silo, used to store various powder raw materials;

[0004] 2. Mixer, which fully mixes various powder raw materials added in proportion;

[0005] 3. Feeding mechanism, which can accurately control the feeding speed and feeding amount of powder raw materials;

[0006] Pullulan is slowly added to an appropriate amount of solvent, and the commonly used solvent is water. During the dissolution process, it needs to be added while stirring. After the pullulan is completely dissolved, the pre-prepared plasticizer is slowly added to the solution, and stirring is continued to fully mix the plasticizer and the pullulan solution. In the process of proportioning and modulation, there are the following deficiencies;

[0007] 1. The pullulan raw material is in solid state, and the plasticizer is in liquid state. The density of solid pullulan is relatively large. During static placement, it may gradually sink, resulting in a high solid content at the bottom and relatively more liquid plasticizer at the top. Stratification is likely to occur during the mixing process. If the stirring is not sufficient or the plasticizer is left to stand for a period of time, the pigment particles may gradually settle to the bottom, which will affect the quality and performance of the product.

[0008] 2. Since pullulan is a solid, its particle size and shape may be uneven. When it is quantitatively transported through a pipeline, larger particles or agglomerated parts may get stuck inside the pipeline, causing pipeline blockage and affecting the ratio and modulation of the raw materials. Summary of the invention

[0009] In order to solve the above technical problems, the present invention provides a modulation device for preparing pullulan hollow capsules to solve the above problems.

[0010] A modulation device for the proportioning of pullulan hollow capsules, comprising a storage barrel, a transmission branch pipe, a mixing tube and a modulation box, a conveying assembly is arranged at the bottom end of each storage barrel, the conveying assembly comprises a metering solenoid valve, a discharge pipe, a rotating outer sleeve, and a rotating outer sleeve, a mixing mechanism is arranged inside the mixing tube, the mixing mechanism comprises a docking cover plate, a transmission rod, a stirring blade, and a material slow flow ring, the top end of each transmission branch pipe is through-connected with the discharge pipe, a gear box and a motor are arranged on the outside of each metering solenoid valve, the same control box is fixedly installed on the outside of the two storage barrels, and vertically arranged heating rods are arranged inside the transmission rod.

[0011] Preferably, each of the material slow-flow rings is fixed at equal distances inside the mixing tube, and the top of the material slow-flow ring is designed to be inwardly concave, and each of the stirring blades is a group of three, which are staggered and fixed on the surface of the transmission rod;

[0012] The transmission rods all penetrate the top end of the docking cover plate and are rotatably connected to the bottom end of the control box;

[0013] The top of the docking cover plate is provided with a sliding collar for vertical sliding, and each of the sliding collars is provided with two sliding sleeve rods for conveying water flow;

[0014] A trapezoidal support block for supporting the connection is fixedly mounted on the bottom end of each sliding sleeve rod, and at least a vertically arranged high-pressure nozzle is fixedly mounted on the outer side of each trapezoidal support block.

[0015] Preferably, a sealing docking block for docking with the docking cover plate is fixedly mounted at the bottom end of each of the trapezoidal support blocks, and sealing strips are arranged on both sides of each of the sealing docking blocks;

[0016] Two compressible telescopic sleeves are fixedly installed on the top of the sliding sleeve ring, and a flexible connecting hose is fixedly installed on the top of each sliding sleeve rod;

[0017] The outer side of each of the discharge pipes is provided with two arc-shaped grooves for conveying materials, and the outer side of each of the rotating outer sleeves is fixedly installed with a bevel tooth support plate for horizontal rotation;

[0018] A sealing top cover that can slide vertically is slidably mounted on the top of each storage barrel, and a driving rod connected to a conical gear ring is rotatably mounted on both side ends of the control box;

[0019] The bottom end of the modulation box is provided with two discharge pipes for discharging materials.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, a driving rod drives a stirring blade to rotate inside a mixing tube, and pullulan and a plasticizer entering the mixing tube are pre-mixed. Meanwhile, a heating rod is installed inside the driving rod, and the heating rod is preheated by electric heating. Through heating and mixing, the plasticizer can quickly wrap the pullulan particles as the material flows. This instant mixing method can avoid the agglomeration of solid particles that may occur during storage or separate transportation, and avoid stratification.

[0022] In the present invention, the bevel gear ring is driven to rotate by a driving rod, and the rotating outer sleeve and the bevel gear ring are an integrated structure. The rotating outer sleeve is sleeved on the outside of the discharge pipe. Two arc grooves are provided at the top of the discharge pipe, and two arc grooves are also provided on the outside of the rotating outer sleeve. The rotating outer sleeve is continuously rotated at a uniform speed on the outside of the discharge pipe, so that pullulan and plasticizer intermittently enter the interior of the discharge pipe. When intermittent feeding is used, solid particles have more time to disperse and move in the pipeline, preventing pullulan from accumulating inside the pipeline to form a blockage.

[0023] In the present invention, by rotating the outer sleeve continuously and uniformly on the outside of the discharge pipe, when the two arc grooves are aligned with each other, pullulan and plasticizer enter the interior of the discharge pipe through the arc grooves, and the liquid flow rate can be more accurately adjusted to better match the solid feed amount, thereby ensuring the accuracy of the mixing ratio.

[0024] In the present invention, the opening is sealed by turning the knob in the opposite direction, and the sealing top cover can slide vertically freely inside the storage barrel to seal the material inside the storage barrel, thereby preventing the pullulan and plasticizer inside the storage barrel from mixing into impurities and affecting the purity of the material.

[0025] In the present invention, a cleaning solution is sprayed into the interior of the mixing tube through a high-pressure nozzle, and at the same time, the cleaning solution is sprayed onto the surface of the stirring blades and the material slow-flow ring to clean the components inside the mixing tube. At the same time, the inclined high-pressure nozzle can spray the cleaning solution into the interior of the transmission branch pipe, and the transmission branch pipe and the interior of the mixing tube are cleaned through a sliding sleeve rod, thereby improving the service life of the components.

[0026] In the present invention, a plurality of material slow-flow rings are installed inside the mixing tube, the material slow-flow rings are equidistantly installed inside the mixing tube, the top of the material slow-flow rings are concavely designed, and the plurality of material slow-flow rings buffer and intercept the mixed pullulan and plasticizer, slow down the falling speed of the pullulan and plasticizer inside the mixing tube, and make it easier for the transmission rod to drive the stirring blade to rotate, so that the flowing pullulan and plasticizer are stirred and mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the storage barrel structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the control box of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the mixing tube of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the stirring blade of the present invention;

[0031] Figure 5 This is a schematic diagram of the material slow flow ring structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the sliding collar of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the rotating outer sleeve of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the discharge pipe of the present invention;

[0035] Fig. 9 The present invention Figure 6 A is an enlarged structural diagram of FIG.

[0036] In the figure, 11, storage barrel; 12, transmission branch pipe; 13, mixing pipe; 14, modulation box; 15, discharge pipe; 16, metering solenoid valve; 17, sealing top cover; 18, control box; 19, docking cover plate; 21, driving rod; 22, telescopic sleeve; 23, transmission rod; 24, stirring blade; 25, material slow flow ring; 26, heating rod; 27, connecting hose; 28, sliding sleeve; 29, sliding sleeve rod; 31, discharge pipe; 32, rotating outer sleeve; 33, conical gear ring; 34, arc groove; 35, oblique gear support plate; 36, trapezoidal support block; 37, high-pressure nozzle; 38, sealing docking block. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0038] See also Figure 1 - Fig. 9The present invention provides a modulation device for the proportioning of pullulan hollow capsules, comprising a storage barrel 11, a transmission branch pipe 12, a mixing pipe 13 and a modulation box 14. A conveying assembly is arranged at the bottom end of each storage barrel 11, and the conveying assembly comprises a metering solenoid valve 16, a discharge pipe 31, a rotating outer sleeve 32, and a rotating outer sleeve 32. The rotating outer sleeve 32 is continuously rotated at a uniform speed on the outer side of the discharge pipe 31. When the two arc grooves 34 are aligned with each other, the pullulan and the plasticizer enter the inside of the discharge pipe 31 through the arc groove 34. The rotating outer sleeve 32 cooperates with the rotation of the discharge pipe 31 to allow the pullulan and the plasticizer to intermittently enter the inside of the discharge pipe 31. When intermittent feeding is adopted, the solid particles have more time to disperse and move in the pipeline, so as to prevent the pullulan from accumulating inside the pipeline to form a blockage.

[0039] A mixing mechanism is arranged inside the mixing tube 13, and the mixing mechanism includes a docking cover plate 19, a transmission rod 23, a stirring blade 24, and a material slow flow ring 25. The top of each transmission branch pipe 12 is connected to the discharge pipe 31, and a gear box and a motor are arranged on the outside of each metering solenoid valve 16. The same control box 18 is fixedly installed on the outside of the two storage barrels 11. Each material slow flow ring 25 is fixed at an equal distance inside the mixing tube 13, and the top of the material slow flow ring 25 is designed to be inwardly concave. Each stirring blade 24 is a group of three, which are staggered and fixed on the transmission. The surface of the rod 23 and the interior of the transmission rod 23 are provided with vertically arranged heating rods 26. The transmission rods 23 all penetrate the top end of the docking cover plate 19 and are rotatably connected to the bottom end of the control box 18. The transmission rods 23 drive the stirring blades 24 to rotate inside the mixing tube 13, and the pullulan and the plasticizer entering the mixing tube 13 are pre-mixed. At the same time, a heating rod 26 is installed inside the transmission rod 23, and the heating rod 26 is preheated by electric heating. Through heating and mixing, the pullulan and the plasticizer are pre-mixed inside the mixing tube 13.

[0040] A sliding collar 28 for vertical sliding is provided at the top of the docking cover plate 19, and two sliding sleeve rods 29 for conveying water flow are provided inside each sliding collar 28, and a trapezoidal support block 36 for supporting connection is fixedly installed at the bottom end of each sliding sleeve rod 29, and at least a vertically arranged high-pressure nozzle 37 is fixedly installed on the outer side of each trapezoidal support block 36, and two compressible telescopic sleeves 22 are fixedly installed at the top of the sliding collar 28, and a bendable connecting hose 27 is fixedly installed at the top of each sliding sleeve rod 29, and at least two high-pressure nozzles 37 are installed at the side end of the trapezoidal support block 36, and the cleaning solution is splashed into the interior of the mixing tube 13 through the high-pressure nozzle 37, and the cleaning solution is splashed onto the surface of the stirring blade 24 and the material slow flow ring 25, so as to clean the parts inside the mixing tube 13;

[0041] The bottom end of each trapezoidal support block 36 is fixedly mounted with a sealing docking block 38 for docking the docking cover plate 19. Sealing strips are arranged on both sides of each sealing docking block 38. The docking cover plate 19 drives the sliding sleeve rod 29 to slide upward, and the sliding sleeve rod 29 drives the sealing docking block 38 to enter the interior of the docking cover plate 19. Sealing strips are arranged on both sides of the sealing docking block 38. The docking cover plate 19 is sealed by the sealing docking block 38 to ensure sealing performance.

[0042] The outer side of each discharge pipe 31 is provided with two arc grooves 34 for conveying materials, and the outer side of each rotating outer sleeve 32 is fixedly installed with a beveled tooth support plate 35 for horizontal rotation. The rotating outer sleeve 32 drives the beveled tooth support plate 35 to rotate inside the storage barrel 11. The beveled tooth support plate 35 rotates inside the pullulan and the plasticizer respectively to ensure the stability of the discharge and prevent the stratification phenomenon when the plasticizer is stored.

[0043] A sealing top cover 17 that can slide vertically is slidably mounted on the top of each storage barrel 11, and a driving rod 21 connected to a bevel gear ring 33 is rotatably mounted on both side ends of the control box 18. The two driving rods 21 are driven to rotate by the control box 18, and a gear is mounted on the top of the driving rod 21, which is fitted and connected with the bevel gear ring 33. The bevel gear ring 33 is pushed to rotate by the driving rod 21. At the same time, the rotating outer sleeve 32 and the bevel gear ring 33 are an integrated structure, and the rotating outer sleeve 32 is sleeved on the outside of the discharge pipe 31, driving the two rotating outer sleeves 32 to rotate synchronously for feeding;

[0044] Two discharge pipes 15 for discharging materials are provided at the bottom end of the modulation box 14. Pullulan and plasticizer enter the interior of the modulation box 14 through the mixing pipe 13, and the materials are strongly stirred, sheared and conveyed so that the pullulan and plasticizer are fully mixed in the modulation box 14 and then discharged through the discharge pipe 15.

[0045] Working principle:

[0046] In the first step, we carefully installed a sealing top cover 17 at the top of the storage barrel 11, and the top of the sealing top cover 17 is designed with an opening, which is convenient for the staff to add the required pullulan and plasticizer to the inside of the two storage barrels 11 through this opening. In order to ensure the convenience and safety of the adding process, the opening is designed with a reverse knob, and the staff can easily seal the opening through the knob to prevent external impurities from mixing in. The sealing top cover 17 not only has a sealing function, but it can also slide vertically freely inside the storage barrel 11, thereby effectively sealing the material inside the storage barrel 11 to ensure that the purity of the pullulan and plasticizer is not affected. At the side end of the metering solenoid valve 16, we set a motor and a gear box. The gear box is driven by the motor, and then the torque generated by the motor is used to drive the opening and closing of the metering solenoid valve 16. By accurately controlling the operating angle and speed of the motor, we can achieve precise adjustment of the opening of the metering solenoid valve 16, so that the pullulan and plasticizer inside the storage barrel 11 can be smoothly transported downward through the discharge pipe 31.

[0047] In addition, we have also designed a control box 18 to drive the two driving rods 21 to rotate. Gears are installed on the top of the driving rods 21. These gears are perfectly connected with the bevel gear ring 33. When the driving rod 21 rotates, it will push the bevel gear ring 33 to rotate. At the same time, the rotating outer sleeve 32 and the bevel gear ring 33 are an integrated structure. The rotating sleeve of the rotating outer sleeve 32 is connected to the outside of the discharge pipe 31. At the top of the discharge pipe 31, we set two arc grooves 34, and two arc grooves 34 are also correspondingly set on the outside of the rotating outer sleeve 32. Through the uniform rotation of the rotating outer sleeve 32, when the two arc grooves 34 are aligned with each other, pullulan and plasticizer can smoothly enter the interior of the discharge pipe 31 through these arc grooves 34. Through the coordinated rotation of the rotating outer sleeve 32 and the discharge pipe 31, pullulan Sugar and plasticizer can intermittently enter the inside of the discharge pipe 31. This intermittent feeding method allows solid particles to have more time to disperse and move in the pipeline, effectively preventing pullulan from accumulating inside the pipeline to form a blockage, while improving the stability of the pullulan flow rate. At the same time, the plasticizer inside the storage barrel 11 enters the inside of the discharge pipe 31 through intermittent feeding, which can more accurately adjust the liquid flow rate to better match it with the solid feed amount, ensuring the accuracy of the mixing ratio. At the same time, the rotating outer sleeve 32 drives the beveled tooth support plate 35 to rotate inside the storage barrel 11. The beveled tooth support plate 35 rotates inside the pullulan and plasticizer respectively to ensure the stability of the discharge. It also prevents stratification when the plasticizer is stored, ensuring the efficient and stable operation of the entire system.

[0048] In the second step, pullulan and plasticizer are transported to the interior of the transmission branch pipe 12 through the discharge pipe 31. This process is continuous and stable. The transmission branch pipe 12 is tightly connected to the mixing pipe 13 to ensure the smooth transition of the materials. Pullulan and plasticizer begin to mix inside the mixing pipe 13. In order to optimize the mixing effect, a plurality of material slow-flow rings 25 are specially installed inside the mixing pipe 13. These material slow-flow rings 25 are installed equidistantly at a certain interval, and their top ends are designed to be concave. Such a design can effectively buffer and intercept the pullulan and plasticizer in the mixture. In this way, the material slow-flow ring 25 slows down the pullulan and plasticizer. The falling speed of the agent inside the mixing tube 13 is increased, thereby improving the uniformity and efficiency of mixing. Inside the docking cover plate 19, the transmission rod 23 is designed to rotate, and a plurality of stirring blades 24 are installed at the end of the transmission rod 23. These stirring blades 24 are staggered to ensure that the materials in the mixing process can be fully stirred and mixed. The transmission rod 23 drives the stirring blades 24 to rotate inside the mixing tube 13 through mechanical transmission, and pre-mixes the pullulan and plasticizer entering the mixing tube 13. In addition, a heating rod 26 is also installed inside the transmission rod 23, and the heating rod 26 is preheated by electric heating to provide necessary heat for the mixing process.

[0049] Through the dual effects of heating and mixing, pullulan and plasticizer can be pre-mixed more evenly inside the mixing tube 13. In the mixing tube 13, the plasticizer can quickly wrap the pullulan particles as the material flows. This instant mixing method can effectively avoid the agglomeration of solid particles that may occur during storage or separate transportation. At the same time, this mixing method can also prevent the occurrence of stratification and ensure the quality consistency of the final product.

[0050] The sliding collar 28 is slowly pushed downward by the two telescopic sleeves 22. At this time, the sliding collar 28 will slide downward along a specific direction at the top of the docking cover plate 19. As the sliding collar 28 moves, it will drive the two sliding sleeve rods 29 connected thereto to move downward together. In this way, the sliding sleeve rod 29 will gradually insert into the interior of the docking cover plate 19. At the same time, since the top of the sliding sleeve rod 29 is connected to the connecting hose 27, and the connecting hose 27 is made of soft material and has the characteristics of stretchability and bending, when the sliding sleeve rod 29 is moved downward, the connecting hose 27 is moved downward. When the control box 18 moves downward, its top end will pull the connecting hose 27. Two interfaces are installed at the top of the control box 18, through which the cleaning solution can be transported to the inside of the control box 18. The cleaning solution will enter the inside of the sliding sleeve rod 29 along the connecting hose 27. A trapezoidal support block 36 is installed at the bottom end of the sliding sleeve rod 29. The side end of the trapezoidal support block 36 adopts a bevel design. This design has its unique function. At least two high-pressure nozzles 37 are installed at the side end of the trapezoidal support block 36. When the cleaning solution flows into the sliding sleeve rod 29, it will pass through these nozzles. The high-pressure nozzle 37 sprays into the interior of the mixing tube 13. During this process, the cleaning solution will not only spray onto the surfaces of the stirring blades 24 and the material slow-flow ring 25, effectively cleaning these parts inside the mixing tube 13, but also because the high-pressure nozzle 37 is tilted, the cleaning solution can also be sprayed into the interior of the transmission branch pipe 12. By moving the sliding sleeve 29 up and down, the interior of the transmission branch pipe 12 and the mixing tube 13 can be fully cleaned. This measure can greatly increase the service life of these parts. When it is necessary to stop cleaning, During operation, the two telescopic sleeves 22 are stretched upward. During the stretching process, the telescopic sleeves 22 will pull the docking cover plate 19 to move upward. When the docking cover plate 19 moves upward, the sliding sleeve rod 29 will also slide upward. As the sliding sleeve rod 29 moves upward, the sliding sleeve rod 29 will drive the sealing docking block 38 to enter the interior of the docking cover plate 19. Sealing strips are installed on both sides of the sealing docking block 38. These sealing strips can play a good sealing role. The docking cover plate 19 is sealed by the sealing docking block 38, which can effectively ensure the sealing of the entire device.

[0051] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. A preparation device for preparing pullulan hollow capsules, comprising a storage barrel (11), a transmission branch pipe (12), a mixing pipe (13) and a preparation box (14), characterized in that: A conveying assembly is arranged at the bottom end of each storage barrel (11), and the conveying assembly includes a metering solenoid valve (16), a discharge pipe (31), a rotating outer sleeve (32), and a rotating outer sleeve (32). A mixing mechanism is arranged inside the mixing tube (13), and the mixing mechanism includes a docking cover plate (19), a transmission rod (23), a stirring blade (24), and a material slow flow ring (25). The top end of each transmission branch pipe (12) is through-connected with the discharge pipe (31). A gear box and a motor are arranged on the outside of each metering solenoid valve (16). The outside of the two storage barrels (11) is fixedly mounted with a same control box (18), and the inside of the transmission rod (23) is provided with a vertically arranged heating rod (26).

2. A preparation device for preparing pullulan hollow capsules as claimed in claim 1, characterized in that: Each of the material slow-flow rings (25) is fixed at equal distances inside the mixing tube (13), and the top of the material slow-flow ring (25) is designed to be inwardly concave. Each of the stirring blades (24) is grouped into three and fixed on the surface of the transmission rod (23) in an interlaced manner.

3. A preparation device for preparing pullulan hollow capsules according to claim 1, characterized in that: The transmission rods (23) all penetrate the top end of the docking cover plate (19) and are rotatably connected to the bottom end of the control box (18).

4. A preparation device for preparing pullulan hollow capsules according to claim 1, characterized in that: A sliding collar (28) for vertical sliding is arranged at the top end of the docking cover plate (19), and two sliding sleeve rods (29) for conveying water are arranged inside each sliding collar (28).

5. A preparation device for preparing pullulan hollow capsules as claimed in claim 4, characterized in that: A trapezoidal support block (36) for supporting the connection is fixedly mounted on the bottom end of each sliding sleeve rod (29), and at least a vertically arranged high-pressure nozzle (37) is fixedly mounted on the outer side of each trapezoidal support block (36).

6. A preparation device for preparing pullulan hollow capsules as claimed in claim 5, characterized in that: A sealing docking block (38) for docking with the docking cover plate (19) is fixedly mounted at the bottom end of each trapezoidal support block (36), and sealing strips are arranged on both sides of each sealing docking block (38).

7. A preparation device for preparing pullulan hollow capsules as claimed in claim 4, characterized in that: Two compressible telescopic sleeves (22) are fixedly mounted on the top of the sliding sleeve ring (28), and a bendable connecting hose (27) is fixedly mounted on the top of each sliding sleeve rod (29).

8. A preparation device for preparing pullulan empty capsules as claimed in claim 1, characterized in that: The outer side of each of the discharge pipes (31) is provided with two arc-shaped grooves (34) for conveying materials, and the outer side of each of the rotating outer sleeves (32) is fixedly provided with a bevel tooth support plate (35) for horizontal rotation.

9. A preparation device for preparing pullulan empty capsules as claimed in claim 1, characterized in that: A sealing top cover (17) that can slide vertically is slidably mounted on the top of each storage barrel (11), and a driving rod (21) connected to a bevel gear ring (33) is rotatably mounted on both side ends of the control box (18).

10. A preparation device for preparing pullulan empty capsules as claimed in claim 1, characterized in that: The bottom end of the modulation box (14) is provided with two discharge pipes (15) for discharging materials.

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