Triple helix extrusion device and pelletizer

Abstract

The utility model discloses a three spiral extruding device relates to small honeyed pill preparation technical field, including casing, go out strip disc, first three spiral propeller and second three spiral propeller, is provided with feed hopper and discharge gate on the casing, and first three spiral propeller is arranged in parallel with second three spiral propeller, and rotates and is arranged in the casing, and can rotate around the own axis, and first three spiral propeller and second three spiral propeller all include rotating shaft and three groups of spiral vane, and three groups of spiral vane fixedly arranged in the outer periphery of rotating shaft, the end of first three spiral propeller rotates and is arranged on go out strip disc, go out strip disc fixedly arranged at discharge gate place and with discharge gate intercommunication, and go out strip disc is provided with strip outlet. The utility model discloses still a kind of pill making machine, including the three spiral extruding device as described above. The utility model can have more uniform strip speed, guarantee the production quality of pill.

Description

Technical Field

[0001] This utility model relates to the field of small honey pill preparation technology, and in particular to a triple helix extrusion device and a pill-making machine. Background Technology

[0002] Currently, most pelleting machines used in the production of small honey pills employ a dual-helix extruder, which consists of a rotating shaft and two helical blades fixed to the shaft. However, dead zones of material easily form between the two parallel helical blades and in the gaps between the blades and the inner wall of the shaft. The material in these dead zones is relatively stationary and cannot be effectively pushed. During operation, due to pressure changes and the viscoelasticity of the material, the material in these dead zones may suddenly collapse or detach, irregularly mixing into the main feed stream, forming an additional, uncontrolled flow that disrupts uniform extrusion, thus affecting the appearance and quality of the pills. Therefore, a triple-helix extruder and pelleting machine are urgently needed to solve the aforementioned technical problems. Utility Model Content

[0003] The purpose of this invention is to provide a triple helix extrusion device and a pelletizing machine to solve the problems existing in the prior art, thereby achieving a more uniform extrusion speed and ensuring the production quality of the pellets.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a triple helix extrusion device, including a housing, an extrusion disc, a first triple helix propeller, and a second triple helix propeller. The housing is provided with a feed hopper and an outlet. The first triple helix propeller and the second triple helix propeller are arranged parallel to each other and rotatably disposed within the housing, and both can rotate around their own axes. Both the first triple helix propeller and the second triple helix propeller include a rotating shaft and three sets of helical blades. The three sets of helical blades are fixedly disposed on the outer periphery of the rotating shaft. The end of the first triple helix propeller is rotatably disposed on the extrusion disc. The extrusion disc is fixedly disposed at the outlet and communicates with the outlet, and the extrusion disc is provided with an extrusion port.

[0005] In some embodiments, the feed hopper is located at the top of the housing and at one end away from the output disc.

[0006] In some embodiments, both the end of the first triple helical propeller away from the discharge port and the end of the second triple helical propeller away from the discharge port are connected to a drive device.

[0007] In some embodiments, the end of the housing away from the drive device includes a first plane and a first inclined plane. The first plane is parallel to the plane of the housing on the side where the drive device is mounted. The first inclined plane gradually approaches the first plane from the side of the housing along the length direction of the housing. The second triple propeller is rotatably connected to the first inclined plane.

[0008] In some embodiments, a guide disk is also included, which is fixedly disposed at the first inclined surface. The first inclined surface is open, and the tilt angle of the guide disk is the same as the tilt angle of the first inclined surface. The guide disk can cover the outside of the first inclined surface.

[0009] In some embodiments, a positioning disk is also included, which is fixedly disposed at the first inclined surface. The positioning disk has an opening, and a guide disk covers the outside of the positioning disk and is fixedly connected to the positioning disk.

[0010] In some embodiments, the guide plate and the positioning plate are connected by a hinge on their sides, and both the guide plate and the positioning plate are provided with a plurality of bolt holes along the circumference, so that the guide plate and the positioning plate can be connected by bolts.

[0011] In some embodiments, a locking nut is also included. The discharge port extends outward to a discharge pipe, and the outer periphery of the discharge pipe is provided with threads. The locking nut includes a threaded portion and a limiting portion. The limiting portion is annular and vertically fixedly connected to the end of the threaded portion. The diameter of the annular opening of the limiting portion is smaller than the diameter of the extrusion disc. The extrusion disc is located between the limiting portion and the discharge pipe. The threaded portion is threadedly connected to the discharge pipe.

[0012] In some embodiments, the extrusion disc has a plurality of extrusion ports evenly arranged circumferentially.

[0013] This utility model also provides a pelletizing machine, including the triple spiral extrusion device as described above.

[0014] The present invention achieves the following technical advantages over the prior art: The triple-helix extrusion device provided by this invention features two sets of triple-helix propellers (each set containing three sets of helical blades) working in parallel. Through the symmetrical distribution and meshing of multiple sets of blades, a more balanced extrusion and thrust can be generated on the material. Compared with single-helix or double-helix structures, the triple-helix structure reduces material slippage and voids, resulting in a higher material filling rate within the shell, a more continuous conveying rhythm, and ultimately better consistency in the diameter of the strips extruded from the output disc, avoiding fluctuations in thickness. Furthermore, the three sets of helical blades provide more thorough shearing and mixing of the material during rotation, making it particularly suitable for powders and pastes containing excipients (such as pharmaceutical materials for pelleting and food ingredients). The staggered pushing of the multiple blades allows for more uniform mixing of the internal components of the material, while simultaneously expelling air during extrusion, reducing air bubbles or loose defects inside the strips, and improving the material density. Moreover, the parallel operation of the two sets of propellers can increase the material throughput and improve the strip output efficiency; at the same time, by adjusting the speed ratio of the two sets of propellers (such as synchronous or differential rotation), the extrusion strength and conveying speed of the material can be flexibly controlled to adapt to different material characteristics (such as humidity and particle size differences). Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the first angle of the three-spiral extrusion device in some embodiments of this utility model; Figure 2 This is a schematic diagram of the second angle of the triple helix extrusion device in some embodiments of this utility model; Figure 3 This is a top view of the three-spiral extrusion device in some embodiments of the present invention; Figure 4 This is a schematic diagram of the structure of the triple helix extrusion device without a housing in some embodiments of this utility model.

[0017] In the diagram: 1-Shell; 2-First triple helix propeller; 3-Second triple helix propeller; 4-Feed hopper; 5-Helical blade; 6-Outlet disc; 7-Locking nut; 8-Guide disc; 801-Second ear plate; 802-Fourth ear plate; 803-Contact platform; 9-Positioning disc; 901-First ear plate; 902-Third ear plate; 10-Bolt; 11-First pin; 12-Second pin; 13-Fixing disc; 14-Receiving cylinder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this invention is to provide a triple helix extrusion device and a pelletizing machine to solve the problems existing in the prior art, thereby achieving a more uniform extrusion speed and ensuring the production quality of the pellets.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-4 As shown, this utility model provides a triple-helix extrusion device, including a housing 1, an extrusion disc 6, a first triple-helix propeller 2, and a second triple-helix propeller 3. The housing 1 is provided with a feed hopper 4 and a discharge port. The first triple-helix propeller 2 and the second triple-helix propeller 3 are arranged parallel to each other and rotatably mounted within the housing 1, each capable of rotating around its own axis. Both the first triple-helix propeller 2 and the second triple-helix propeller 3 include a rotating shaft and three sets of helical blades 5. The three sets of helical blades 5 are fixedly mounted on the outer circumference of the rotating shaft, and the three sets of helical blades 5 on the first triple-helix propeller 2 are parallel to each other, as are the three sets of helical blades 5 on the second triple-helix propeller 3. The end of the first triple-helix propeller 2 is rotatably mounted on the extrusion disc 6, which is fixedly mounted at the discharge port and communicates with it. The extrusion disc 6 is provided with an extrusion port. The two sets of triple-helix propellers (each containing three sets of helical blades 5) work in parallel. Through the symmetrical distribution and meshing of multiple sets of blades, a more balanced extrusion and thrust can be formed on the material. Compared to single or double helical structures, the triple helical structure reduces material slippage and voids, resulting in a higher filling rate and more continuous conveying rhythm within the shell 1. This leads to better consistency in the diameter of the strips extruded from the output disc 6, avoiding fluctuations in thickness. Furthermore, the three sets of helical blades 5 provide more thorough shearing and mixing of the material during rotation, making it particularly suitable for powders and pastes containing excipients (such as pharmaceutical materials for pelleting and food ingredients). The staggered pushing of the multiple blades ensures more uniform mixing of the material's internal components, while simultaneously expelling air during extrusion, reducing air bubbles or loose defects within the strips and improving material density. Moreover, the parallel operation of the two sets of propellers increases material throughput and improves extrusion efficiency. Additionally, by adjusting the speed ratio of the two sets of propellers (such as synchronous or differential rotation), the extrusion intensity and conveying speed can be flexibly controlled to adapt to different material characteristics (such as moisture content and particle size differences).

[0022] In some embodiments, the feed hopper 4 is located at the top of the housing 1 and at the end furthest from the output disc 6. Material is fed from the top of the housing 1 at the end furthest from the output disc 6, and can be gradually propelled along the entire length of the screw propeller. During the pushing process, the material has sufficient time to be compressed and vented, avoiding insufficient material filling due to the feed point being too close, thus improving the density of the output strip. With the feed hopper 4 located at the top, the material falls with the aid of its own gravity, and the gripping force of the screw blades 5 reduces material bridging and stagnation within the hopper.

[0023] In some embodiments, both the end of the first triple-helix propeller 2 furthest from the discharge port and the end of the second triple-helix propeller 3 furthest from the discharge port are connected to a drive device, which is a motor or a drive motor. The two propellers are driven by independent motors or drive motors, allowing for flexible adjustment of their speed and direction of rotation according to actual production needs. For example, when processing materials with different properties, the extrusion and conveying speed of the material within the housing 1 can be changed by adjusting the speeds of the two motors or drive motors to achieve the optimal extrusion effect.

[0024] In some embodiments, the end of the housing 1 away from the drive device includes a first plane and a first inclined plane. The first plane is parallel to the plane of the housing 1 on the drive device mounting side. The first inclined plane gradually approaches the first plane from the side of the housing 1 along the length direction of the housing 1. The second triple-helix propeller 3 is rotatably connected to the first inclined plane. The first inclined plane slopes towards the first plane along the length direction of the housing 1, which is equivalent to providing guiding support for the second helix propeller. The material pushed by it will converge towards the side of the first helix propeller under the constraint of the inclined plane. The synergistic effect of the two sets of helices can guide the material to the discharge port more efficiently, avoid the material from lingering and accumulating at the corner of the end of the housing 1, and improve the material utilization rate and the continuity of conveying.

[0025] In some embodiments, the triple helix extrusion apparatus further includes a guide disc 8, which is fixedly disposed at the position of the first inclined surface. The first inclined surface is open, and the inclination angle of the guide disc 8 is consistent with the inclination angle of the first inclined surface. The guide disc 8 can cover the outside of the first inclined surface. The guide disc 8, with its angle consistent with the first inclined surface and covering the outside of the first inclined surface, provides a clear flow guide for the material pushed by the second triple helix propeller 3, allowing the material to flow along a predetermined path towards the discharge port. This prevents the material from randomly spreading or stagnating inside the housing 1, ensuring the orderliness and stability of the material flow, thereby improving the quality and consistency of the extruded material. The guide disc 8, as an independent component, is fixedly disposed at the position of the first inclined surface, facilitating positioning and installation during equipment installation. During equipment maintenance, if the guide disc 8 shows signs of wear or damage, it can be relatively easily disassembled and replaced, avoiding the need to replace the entire housing 1.

[0026] In some embodiments, the triple helix extrusion apparatus further includes a positioning disk 9, which is fixedly disposed at the first inclined surface. The positioning disk 9 has an opening, and a guide disk 8 covers the outside of the positioning disk 9 and is fixedly connected to the positioning disk 9. Preferably, the positioning disk 9 is integrally formed with the housing 1. The positioning disk 9 can provide a precise installation position reference for the guide disk 8, ensuring that the guide disk 8 accurately covers the first inclined surface and that its tilt angle is completely consistent with the first inclined surface. This ensures that the guide disk 8 can stably and accurately guide the material flow. The fixed connection between the positioning disk 9 and the guide disk 8 can enhance the stability of the guide disk 8 in the apparatus, making it less prone to displacement or deformation when subjected to the pressure and friction of the material.

[0027] In some embodiments, the guide plate 8 and the side of the positioning plate 9 are connected by a hinge (or by a lug and a pin; the positioning plate 9 is provided with two first lugs 901, and the guide plate 8 is provided with a second lug 801, the second lug 801 being located between the two first lugs 901; both the first lugs 901 and the second lug 801 are provided with through holes; a first pin 11 extends into the through holes of the first lugs 901 and the second lug 801 to connect the guide plate 8 and the positioning plate 9). Both the guide plate 8 and the positioning plate are provided with multiple bolt holes along the circumference, and the guide plate 8 and the positioning plate 9 can be connected by bolts 10. Simply loosening the bolts 10 allows the guide plate 8 to be rotated around the hinge to open, facilitating internal cleaning, maintenance, or replacement of parts, greatly improving maintenance convenience. Multiple bolt holes arranged circumferentially can form a multi-point fastening connection between the guide plate 8 and the positioning plate 9. Compared with a single connection method, it can provide stronger connection strength and stability, ensuring that the guide plate 8 will not easily shift or loosen when subjected to the pressure and friction of the material, thereby ensuring the stability and accuracy of material conveying.

[0028] More specifically, the positioning disk 9 is provided with multiple third ear plates 902, the nut end of the bolt 10 is provided with a through hole, the second pin 12 can pass through the through hole and both ends of the second pin 12 are inserted into a third ear plate 902, the end of the second pin 12 is provided with a pin hole, and a fixing nail is inserted into the pin hole to achieve locking. The guide disk 8 is provided with multiple fourth ear plates 802, the bolt 10 can slide between two fourth ear plates 802 and then connect with a nut, the bottom of the nut can abut against the top of the fourth ear plate 802 on the guide disk 8 to achieve locking.

[0029] It should be noted that a fixed disk 13 is also provided at the end of the second triple helical propeller 3 furthest from the drive device. The rotating shaft of the second triple helical propeller 3 is rotatably connected to the fixed disk 13. The fixed disk 13 is fixedly installed inside the housing 1, and there is a certain distance between the fixed disk 13 and the first inclined surface. The fixed disk 13 has multiple arc-shaped slots along its circumference. Part of the material propelled by the second triple helical propeller 3 can enter the operating space of the first triple helical propeller 2 before reaching the fixed disk 13, and another part can enter the operating space of the first triple helical propeller 2 through the arc-shaped slots on the fixed disk 13. The fixed disk 13 is rotatably connected to the rotating shaft of the second triple helical propeller 3, preventing the second triple helical propeller 3 from being installed on the guide disk 8. The fixed disk 13 provides an additional support point for the propeller, reducing the shaking and offset of the propeller during rotation, making the material conveying more stable.

[0030] Furthermore, a receiving cylinder 14 is provided at the center of the fixed disk 13, the rotating shaft of the second triple helical propeller 3 extends into the receiving cylinder 14, and a contact platform 803 is provided in the middle of the guide disk 8. The end of the receiving cylinder 14 is fitted to the contact platform 803, which to a certain extent prevents the fixed disk 13 from shifting.

[0031] In some embodiments, the triple helix extruder further includes a locking nut 7. A discharge pipe extends outward from the discharge port, and the outer circumference of the discharge pipe is threaded. The locking nut 7 includes a threaded portion and a limiting portion. The limiting portion is annular and vertically fixedly connected to the end of the threaded portion. The diameter of the annular opening of the limiting portion is smaller than the diameter of the extrusion disc 6. The extrusion disc 6 is located between the limiting portion and the discharge pipe, and the threaded portion is threadedly connected to the discharge pipe. Because the diameter of the annular opening of the limiting portion is smaller than the diameter of the extrusion disc 6, and the extrusion disc 6 is located between the limiting portion and the discharge pipe, when the locking nut 7 is tightened, the limiting portion can limit and fix the extrusion disc 6, preventing it from loosening or shifting during material extrusion and ensuring that the extrusion disc 6 can stably perform its function. Furthermore, the extrusion disc 6 is a separate unit from the housing 1, allowing for the production of pills of different specifications simply by replacing the extrusion disc 6, and making maintenance and replacement convenient and cost-effective.

[0032] In some embodiments, the extrusion disc 6 has multiple extrusion ports evenly arranged circumferentially. The even distribution of multiple extrusion ports circumferentially ensures uniform material discharge around the extrusion disc 6, preventing localized over- or under-discharge. Simultaneous discharge from multiple extrusion ports allows for the discharge of more material per unit time compared to a single extrusion port, thereby improving the overall production efficiency of the extrusion unit.

[0033] This utility model also provides a pelletizing machine, including the triple-spiral extrusion device of Embodiment 1, which can generate more balanced extrusion and thrust on the material, reduce material slippage and voids, and make the material filling rate in the shell 1 higher and the conveying rhythm more continuous. Finally, the diameter of the strips extruded from the strip extrusion disc 6 is more consistent, avoiding fluctuations in thickness. Furthermore, when the three sets of spiral blades 5 rotate, the shearing and mixing effect on the material is more thorough, which is especially suitable for powders and pastes containing excipients (such as pharmaceutical materials and food ingredients for pelleting). The staggered pushing of multiple blades can make the internal components of the material more uniformly mixed, and at the same time, air is discharged during the extrusion process, reducing air bubbles or loose defects inside the strips, improving the material density, and ensuring production quality.

[0034] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A triple-spiral extrusion device, characterized in that: The device includes a housing, a strip feeding disc, a first triple-helix propeller, and a second triple-helix propeller. The housing is provided with a feed hopper and a discharge port. The first and second triple-helix propellers are arranged parallel to each other and rotatably disposed within the housing, and each can rotate around its own axis. Both the first and second triple-helix propellers include a rotating shaft and three sets of helical blades. The three sets of helical blades are fixedly disposed on the outer periphery of the rotating shaft. The end of the first triple-helix propeller is rotatably disposed on the strip feeding disc. The strip feeding disc is fixedly disposed at the discharge port and communicates with the discharge port, and the strip feeding disc is provided with a strip feeding outlet.

2. The triple spiral extrusion apparatus according to claim 1, characterized in that: The feed hopper is located at the top of the housing and at the end away from the output disc.

3. The triple helix extrusion apparatus according to claim 1, characterized in that: Both the end of the first triple-helix propeller furthest from the discharge port and the end of the second triple-helix propeller furthest from the discharge port are connected to a drive device.

4. The triple spiral extrusion apparatus according to claim 3, characterized in that: The end of the housing away from the drive device includes a first plane and a first inclined plane. The first plane is parallel to the plane of the housing on the side where the drive device is mounted. The first inclined plane gradually approaches the first plane from the side of the housing along the length direction of the housing. The second triple helical propeller is rotatably connected to the first inclined plane.

5. The triple spiral extrusion apparatus according to claim 4, characterized in that: It also includes a guide disk, which is fixedly disposed at the first inclined surface. The first inclined surface is open, and the tilt angle of the guide disk is the same as the tilt angle of the first inclined surface. The guide disk can cover the outside of the first inclined surface.

6. The triple helix extrusion apparatus according to claim 5, characterized in that: It also includes a positioning disk, which is fixedly disposed at the first inclined surface. The positioning disk has an opening, and a guide disk covers the outside of the positioning disk and is fixedly connected to the positioning disk.

7. The triple helix extrusion apparatus according to claim 6, characterized in that: The guide plate and the positioning plate are connected by a hinge on the side, and both the guide plate and the positioning plate are provided with multiple bolt holes along the circumference, so that the guide plate and the positioning plate can be connected by bolts.

8. The triple spiral extrusion apparatus according to claim 1, characterized in that: It also includes a locking nut, and the discharge port extends outward to a discharge pipe. The outer circumference of the discharge pipe is provided with threads. The locking nut includes a threaded part and a limiting part. The limiting part is annular and vertically fixedly connected to the end of the threaded part. The diameter of the annular opening of the limiting part is smaller than the diameter of the extrusion disc. The extrusion disc is located between the limiting part and the discharge pipe. The threaded part is threadedly connected to the discharge pipe.

9. The triple helix extrusion apparatus according to claim 1, characterized in that: The extrusion disc has multiple extrusion ports evenly arranged circumferentially.

10. A pellet-making machine, characterized in that: Includes the triple helix extrusion apparatus as described in any one of claims 1-9.

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