Medicine powder feeding device for tablet medicine pressing
By designing multiple powder channels and a rotatable discharge plate and separator in the powder feeding device, the problems of inaccurate feeding and uneven filling were solved, thereby improving the uniformity of tablet thickness and pressing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-04-03
AI Technical Summary
The feeding rate of the existing feed pipe is difficult to control accurately, resulting in uneven filling of powdered materials, uneven thickness of the compressed tablets, and ultimately tablet cracking.
A powder feeding device was designed, including a storage pipe, a distribution pipe, and a feeding pipe. By setting multiple powder channels and rotatable discharge plates and separators on the distribution pipe, the volume of each powder channel is determined. The discharge plates and separators are driven to rotate synchronously by a synchronizing rod, so as to achieve continuous and accurate powder feeding.
It achieves accurate control of the feed rate, ensuring uniform filling of powder in the mold, improving the pressing quality and efficiency of tablets, and avoiding problems such as uneven tablet thickness and cracking.
Smart Images
Figure CN224075115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tablet drug preparation technology, and more specifically, to a powder feeding device for tablet drug compression. Background Technology
[0002] A tablet compressor is a machine that compresses powdered materials into tablets using a mold, to meet the requirements of the pharmaceutical industry for compressing various products. Current tablet compressors first use a feed tube to load the powdered medicine into the mold, then the upper and lower molds extrude it to form tablets. However, the current feed rate is mainly controlled by sensors collecting signals, which can lead to operational lag and inaccurate feed rates. Furthermore, due to the shape characteristics of the powdered material, it is difficult to fill the entire mold cavity evenly, resulting in uneven tablet thickness. This, in turn, causes uneven stress during tablet compression, leading to cracking and reducing the tablet yield.
[0003] In view of the above, this application is hereby submitted. Utility Model Content
[0004] The technical problem this invention aims to solve is that the feeding amount of existing feed tubes is difficult to control accurately, and the feeding is uneven, which will cause uneven thickness of the compressed tablets. The purpose is to provide a powder feeding device for tablet compression. By improving the structure of the feed tube, the accuracy of the feeding amount can be improved, and the powder can be filled into the mold with a uniform thickness, thus avoiding tablet cracking during compression.
[0005] This utility model is achieved through the following technical solution:
[0006] A powder feeding device for tablet compression includes a storage tube, a distribution tube coaxially arranged at the lower end of the storage tube, and multiple powder channels coaxially extending through the upper and lower ends of the distribution tube along the circumferential direction.
[0007] The lower end of the distribution pipe is provided with a discharge plate, and the discharge plate has a discharge hole. The discharge plate is in contact with the lower end face of the distribution pipe and can rotate horizontally around the axis of the distribution pipe. The discharge hole can be connected to multiple powder channels in sequence during the rotation of the discharge plate.
[0008] A baffle plate is provided at the upper end of the dispensing pipe. The baffle plate is located directly above the discharge hole. The baffle plate is in contact with the upper end face of the dispensing pipe and can rotate horizontally around the axis of the dispensing pipe. During rotation, the baffle plate can block the upper end of the powder channel that is communicating with the discharge hole.
[0009] The feed pipe is connected to the bottom of the feed distribution pipe and communicates with the discharge hole.
[0010] This invention relates to a feeding device that improves the accuracy of feeding by modifying the structure of the feeding pipe. Specifically, the storage pipe stores powdered materials, which then enter multiple powder channels in the distribution pipe. Each powder channel has a defined volume; the required feeding amount is achieved when a channel is full. When the discharge hole on the discharge plate rotates to align with the lower end of a powder channel, the upper end of the channel is closed by a partition plate, isolating the channel from the storage pipe. The drug in the channel is then discharged through the feeding pipe. After one channel has discharged its drug, the discharge plate rotates to align with the next channel. The lower end of the channel that has discharged its drug is then closed by the discharge plate, and the upper partition plate rotates to reconnect the channel with the storage pipe, allowing powdered materials to refill. By repeating this process, the powder channels can be continuously filled and filled, ensuring accurate feeding while improving efficiency.
[0011] In one specific embodiment, a synchronizing rod is provided at the center of the distributing pipe. The upper end of the synchronizing rod is connected to the partition plate, and the lower end of the synchronizing rod is connected to the discharge plate. The synchronizing rod can rotate relative to the distributing pipe around its own axis, thereby driving the partition plate and the discharge plate to rotate synchronously.
[0012] In one specific embodiment, the partition plate is a fan-shaped plate covering the upper end face of the distribution pipe.
[0013] In one specific embodiment, the angle of the sector plate is 45° to 270°.
[0014] This utility model limits the structure of the partition plate so that, during use, it can ensure that there is enough area to close multiple powder channels while leaving enough area for the powder channels that have already discharged material to be refilled.
[0015] In one specific embodiment, the end face of the partition plate has an inclined structure.
[0016] This invention designs the end face of the partition plate as a sloping structure, that is, the end forms a conical structure. In this way, the partition plate can better separate the upper end face of the distribution pipe from the material during rotation, thereby ensuring the accuracy of the material quantity in the closed powder channel.
[0017] In one specific embodiment, the partition plate is a circular plate covering the entire upper surface of the distribution pipe. The partition plate has a feed hole that can communicate with the powder channel, and the feed hole and the discharge hole are staggered.
[0018] This utility model designs the material separator as a circular plate structure that covers the entire structure. This ensures that only the powder channel that needs to be filled is connected to the storage pipe, while other filled powder channels are separated from the storage pipe. This avoids the material in the storage pipe from compressing the material in the powder channel for a long time, and avoids excessive compression of the powder inside the powder channel, which could lead to an overfilling.
[0019] In one specific embodiment, the feed hole can cover 2 to 3 powder channels.
[0020] In one specific embodiment, a funnel-shaped material gathering hopper is also provided between the material distribution pipe and the feed pipe, which can conveniently gather all the material into the feed pipe.
[0021] In one specific embodiment, the feed pipe has multiple drug feeding channels evenly distributed inside. After the drug powder enters the hopper, it is evenly distributed into the multiple drug feeding channels, so that the material that finally flows into the die pressing hole is evenly dispersed, ensuring uniform thickness and avoiding the problem of uneven thickness when tableting due to excessive local drug powder, thereby improving the quality of the pressed tablets.
[0022] In one specific embodiment, the dispensing tube is made of a transparent material, which allows for easy external observation.
[0023] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0024] 1. The present invention provides a powder feeding device for tablet compression. By improving the structure of the feeding pipe, the powder channel can be continuously discharged and filled, ensuring accurate feeding while improving feeding efficiency.
[0025] 2. The present invention provides a powder feeding device for tablet drug compression, which is limited by the structure of the partition plate. While ensuring that there is enough area to close multiple powder channels, there is also enough area to fill the powder channels that have discharged material. At the same time, the partition plate can better separate the upper end of the distribution pipe from the material during the rotation process, thereby ensuring the accuracy of the amount of material in the closed powder channels.
[0026] 3. The present invention provides a powder feeding device for tablet compression. After the powder enters the hopper, it is evenly distributed into multiple feeding channels, so that the material flowing into the die pressing hole is evenly dispersed, ensuring uniform thickness and avoiding uneven thickness when tablets are compressed due to excessive local powder, thereby improving the quality of the compressed tablets. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the feeding device structure provided in an embodiment of the present utility model;
[0029] Figure 2 A schematic diagram of a partition plate structure provided in an embodiment of this utility model;
[0030] Figure 3 This is a schematic diagram of another partition plate structure provided in an embodiment of the present utility model;
[0031] Figure 4 This is a schematic diagram of the feed pipe structure provided in an embodiment of the present utility model.
[0032] The attached diagram shows the markings and corresponding component names:
[0033] 1-Storage pipe, 2-Distribution pipe, 3-Powder channel, 4-Discharge plate, 5-Discharge hole, 6-Separator plate, 7-Feed pipe, 8-Synchronizing rod, 9-Feed hole, 10-Gathering hopper. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.
[0035] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures are not specifically described in order to avoid obscuring the present invention.
[0036] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0037] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0038] Example 1
[0039] like Figures 1-4 As shown in the figure, the present invention provides a powder feeding device for tablet drug compression, including a storage pipe 1, a distribution pipe 2 coaxially arranged at the lower end of the storage pipe 1, and a plurality of powder channels 3 coaxially opened along the circumferential direction through the upper and lower ends of the distribution pipe 2.
[0040] The lower end of the material distribution pipe 2 is provided with a material discharge plate 4, and a material discharge hole 5 is provided on the material discharge plate 4. The material discharge plate 4 is in contact with the lower end face of the material distribution pipe 2 and can rotate horizontally around the axis of the material distribution pipe 2. The material discharge hole 5 can be connected to multiple powder channels 3 in sequence during the rotation of the material discharge plate 4.
[0041] A baffle plate 6 is provided at the upper end of the dispensing pipe 2. The baffle plate 6 is located directly above the discharge hole 5. The baffle plate 6 is in contact with the upper end face of the dispensing pipe 2 and can rotate horizontally around the axis of the dispensing pipe 2. During the rotation, the baffle plate 6 can block the upper end of the powder channel 3 that is communicating with the discharge hole 5.
[0042] The feed pipe 7, which communicates with the discharge hole 5, is connected to the lower part of the feed pipe 2.
[0043] This invention relates to a feeding device that improves the accuracy of feeding by modifying the structure of the feeding pipe. Specifically, the storage pipe stores powdered materials, which then enter multiple powder channels in the distribution pipe. Each powder channel has a defined volume; the required feeding amount is achieved when a channel is full. When the discharge hole on the discharge plate rotates to align with the lower end of a powder channel, the upper end of the channel is closed by a partition plate, isolating the channel from the storage pipe. The drug in the channel is then discharged through the feeding pipe. After one channel has discharged its drug, the discharge plate rotates to align with the next channel. The lower end of the channel that has discharged its drug is then closed by the discharge plate, and the upper partition plate rotates to reconnect the channel with the storage pipe, allowing powdered materials to refill. By repeating this process, the powder channels can be continuously filled and filled, ensuring accurate feeding while improving efficiency.
[0044] In one specific embodiment, a synchronizing rod 8 is provided at the center of the distributing pipe 2. The upper end of the synchronizing rod 8 is connected to the partition plate 6, and the lower end of the synchronizing rod 8 is connected to the discharge plate 4. The synchronizing rod 8 can rotate relative to the distributing pipe 2 around its own axis, thereby driving the partition plate 6 and the discharge plate 4 to rotate synchronously.
[0045] In one specific embodiment, the material separator 6 is a fan-shaped plate covering the upper end face of the material distribution pipe 2.
[0046] In one specific embodiment, the angle of the sector plate is 45° to 270°.
[0047] This utility model limits the structure of the partition plate so that, during use, it can ensure that there is enough area to close multiple powder channels while leaving enough area for the powder channels that have already discharged material to be refilled.
[0048] In one specific embodiment, the end face of the partition plate 6 is a beveled structure.
[0049] This invention designs the end face of the partition plate as a sloping structure, that is, the end forms a conical structure. In this way, the partition plate can better separate the upper end face of the distribution pipe from the material during rotation, thereby ensuring the accuracy of the material quantity in the closed powder channel.
[0050] In one specific embodiment, the partition plate 6 is a circular plate covering the entire upper surface of the distribution pipe 2. The partition plate 6 has a feed hole 9 that can communicate with the powder channel 3. The feed hole 9 and the discharge hole 5 are staggered.
[0051] This utility model designs the material separator as a circular plate structure that covers the entire structure. This ensures that only the powder channel that needs to be filled is connected to the storage pipe, while other filled powder channels are separated from the storage pipe. This avoids the material in the storage pipe from compressing the material in the powder channel for a long time, and avoids excessive compression of the powder inside the powder channel, which could lead to an overfilling.
[0052] In one specific embodiment, the feed hole 9 can cover 2 to 3 powder channels 3.
[0053] In one specific embodiment, a funnel-shaped material gathering hopper 10 is also provided between the material distribution pipe 2 and the feed pipe 7, which can conveniently gather all the material into the feed pipe.
[0054] In one specific embodiment, the feed pipe 7 has multiple drug feeding channels evenly distributed inside. After the drug powder enters the hopper, it is evenly distributed into the multiple drug feeding channels, so that the material that finally flows into the die pressing hole is evenly dispersed, ensuring uniform thickness and avoiding the problem of uneven thickness when pressing tablets due to excessive local drug powder, thereby improving the quality of pressed tablets.
[0055] In one specific embodiment, the dispensing tube 2 is made of a transparent material, which allows for easy external observation.
[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A powder feeding device for tablet compression, characterized in that, It includes a storage pipe (1), and a distribution pipe (2) is coaxially provided at the lower end of the storage pipe (1). Multiple powder channels (3) are coaxially opened along the circumferential direction on the distribution pipe (2) and pass through the upper and lower ends. The lower end of the distribution pipe (2) is provided with a discharge plate (4), and a discharge hole (5) is provided on the discharge plate (4). The discharge plate (4) is in contact with the lower end face of the distribution pipe (2) and can rotate horizontally around the axis of the distribution pipe (2). The discharge hole (5) can be connected to multiple powder channels (3) in sequence during the rotation of the discharge plate (4). The upper end of the distribution pipe (2) is provided with a partition plate (6), which is located directly above the discharge hole (5). The partition plate (6) is in contact with the upper end face of the distribution pipe (2) and can rotate horizontally around the axis of the distribution pipe (2). During the rotation, the partition plate (6) can block the upper end of the powder channel (3) that is connected to the discharge hole (5). The feed pipe (7) is connected to the lower part of the feed pipe (2) and communicates with the discharge hole (5).
2. The powder feeding device for tablet compression according to claim 1, characterized in that, A synchronizing rod (8) is installed at the center of the distributing pipe (2). The upper end of the synchronizing rod (8) is connected to the partition plate (6), and the lower end of the synchronizing rod (8) is connected to the discharge plate (4). The synchronizing rod (8) can rotate relative to the distributing pipe (2) around its own axis, thereby driving the partition plate (6) and the discharge plate (4) to rotate synchronously.
3. The powder feeding device for tablet compression according to claim 1, characterized in that, The partition plate (6) is a fan-shaped plate covering the upper end face of the distribution pipe (2).
4. A powder feeding device for tablet compression according to claim 3, characterized in that, The angle of the sector plate is 45°~270°.
5. A powder feeding device for tablet compression according to claim 3, characterized in that, The end face of the partition plate (6) is inclined.
6. A powder feeding device for tablet compression according to claim 3, characterized in that, The partition plate (6) is a circular plate covering the entire upper surface of the distribution pipe (2). The partition plate (6) has a feed hole (9) that can communicate with the powder channel (3). The feed hole (9) and the discharge hole (5) are staggered.
7. A powder feeding device for tablet compression according to claim 6, characterized in that, The feed hole (9) can cover 2 to 3 powder channels (3).
8. A powder feeding device for tablet compression according to claim 1, characterized in that, A funnel-shaped material collection hopper (10) is also provided between the material distribution pipe (2) and the feed pipe (7).
9. A powder feeding device for tablet compression according to claim 1, characterized in that, The feed pipe (7) has multiple drug feeding channels evenly distributed inside.
10. A powder feeding device for tablet compression according to claim 1, characterized in that, The feed tube (2) is made of transparent material.