Tensioning device for a dry granulator

Abstract

The utility model relates to dry granulation technical field discloses a kind of tensioning device for dry granulator, including external shell, the outer wall side of external shell is connected with conveying structure, it is used to convey medicine, the output end of conveying structure is equipped with adjusting rolling mechanism, it is used to roll and press into block with medicine, the outer wall side of adjusting rolling mechanism is equipped with granulating structure, it is sheared into granular with block medicine.The utility model in, the sliding block is slid along recess by the telescopic link of adjusting rolling mechanism, the interval of two rolling rollers can be accurately controlled, different hardness, viscous medicine raw materials are adapted, avoid due to interval improper and lead to uneven density of block medicine;Meanwhile, connecting shaft is linked with the sliding slot of receiving plate through synchronous lever, when rolling roller interval is adjusted, receiving plate can be synchronously driven to adjust inclination angle, ensure that block medicine is stably slid to electric cutter, from rolling to shearing, whole link guarantee medicine forming consistency.

Description

Technical Field

[0001] This utility model relates to the field of dry granulation technology, and in particular to a tensioning device for a dry granulator. Background Technology

[0002] In the granulation production of pharmaceuticals, food, and other industries, dry granulators have become the core equipment for drug granulation due to their advantages of eliminating the need for binders and preserving the original properties of raw materials. Currently, mainstream dry granulators typically include core processes such as raw material conveying, crushing into blocks, and shearing granulation. However, in practical applications, structural design flaws in existing equipment make it difficult to balance production efficiency with drug granulation quality, mainly due to the following key issues: The existing dry granulators suffer from insufficient precision in adjusting the roller spacing and a lack of coordinated design. Most roller mechanisms use fixed spacing or manual coarse adjustment, failing to precisely adjust the roller spacing based on the hardness and viscosity differences of the raw materials. Excessive spacing leads to insufficient compaction and uneven density of lumpy drugs; insufficient spacing causes over-compression, resulting in sticking to the rollers and clumping, affecting subsequent granulation processes. Furthermore, the roller mechanism and the receiving component below operate independently. When the roller spacing is adjusted, the angle of the receiving plate cannot be synchronized, causing lumpy drugs to accumulate or slip off the receiving plate, resulting in inaccurate alignment in subsequent shearing processes and further reducing the consistency of drug formation. Summary of the Invention

[0003] To overcome the above deficiencies, this utility model provides a tensioning device for a dry pellet mill, which aims to improve the problems of insufficient adjustment accuracy of the rolling gap and lack of linkage adaptation design in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a tensioning device for a dry granulator, comprising an outer shell, wherein a conveying structure is connected to one side of the outer wall of the outer shell for conveying medicine, and an adjusting crushing mechanism is provided at the output end of the conveying structure for crushing the medicine into blocks, and a granulation structure is provided on one side of the outer wall of the adjusting crushing mechanism for shearing the blocky medicine into granules.

[0005] As a further description of the above technical solution: The conveying structure includes a conveying pipe, which is installed on one side of the outer wall of the outer shell. The top of the conveying pipe is connected to a feed hopper. One end of the conveying pipe extends into the interior of the outer shell. A servo motor is fixedly connected to one side of the outer wall of the conveying pipe. The output end of the servo motor passes through the conveying pipe and is fixedly connected to a long rod. An auger is fixedly connected to the outer wall of the long rod.

[0006] As a further description of the above technical solution: The adjusting rolling mechanism includes a fixed frame, which is installed on one side of the outer wall of the outer shell. Telescopic rods are installed on the upper and lower ends of the inner wall of the fixed frame. A slider is installed on the output end of the telescopic rod. One end of a connecting shaft is installed on one side of the outer wall of the slider. A servo motor is fixedly connected to the other end of the connecting shaft. A rolling roller is fixedly connected to the output end of the servo motor. The servo motor, the connecting shaft, and the slider are all arranged symmetrically with respect to the rolling roller.

[0007] As a further description of the above technical solution: The granulation structure includes a fixed shaft, one end of which is fixedly connected to the inner wall of the outer shell, and the other end of which is rotatably connected to a receiving plate. A knife groove is provided on one side of the outer wall of the receiving plate, and a sliding groove is provided on the other side of the outer wall of the receiving plate. One end of a synchronizing rod is slidably connected inside the sliding groove, and the other end of the synchronizing rod is fixedly connected to one side of the outer wall of the connecting shaft. An electric cutter is installed on one side of the inner wall of the outer shell.

[0008] As a further description of the above technical solution: The granulation structure also includes a granulation frame with a semi-circular ring structure as its main body. The granulation frame is installed on the inner wall of the outer shell, and an electric granulation knife is installed inside the granulation frame. The blade of the electric granulation knife has a beveled surface.

[0009] As a further description of the above technical solution: The axis of the electric granulator is coaxial with the main body of the granulator frame.

[0010] As a further description of the above technical solution: The inner wall of the fixed frame has grooves on both the left and right sides, and the slider is slidably connected inside the grooves.

[0011] This utility model has the following beneficial effects: In this invention, the device adjusts the telescopic rod of the crushing mechanism to push the slider to slide along the groove, which can precisely control the distance between the two crushing rollers, adapting to drug raw materials with different hardness and viscosity, and avoiding uneven density of lumpy drugs due to improper spacing; at the same time, the connecting shaft is linked to the slide groove of the receiving plate through the synchronous rod, so that when the distance between the crushing rollers is adjusted, the receiving plate can be adjusted to adjust the tilt angle simultaneously, ensuring that the lumpy drugs slide stably to the electric cutter. The entire process from crushing to shearing ensures the consistency of drug forming and improves the quality of finished products.

[0012] In this invention, the auger of the conveying structure fits tightly against the inner wall of the conveying pipe, enabling continuous and uniform delivery of raw materials and preventing material accumulation or interruption of delivery. In the granulation structure, the electric cutter and the blade groove work together to achieve precise cutting of block-shaped medicines. The inclined design of the electric granulator, combined with the coaxial setting of the granulation mesh frame, efficiently granulates strip-shaped medicines, reducing residual loss of medicines in each stage. Furthermore, the various structures achieve automated coordination through mechanical linkage, eliminating the need for frequent manual adjustments, reducing operational complexity, and improving overall production efficiency. Attached Figure Description

[0013] Figure 1 This is a perspective view of a tensioning device for a dry granulator proposed in this utility model; Figure 2 This is a diagram illustrating a tensioning device for a dry granulator according to the present invention. Figure 3 This is a schematic diagram of a tensioning device for a dry granulator proposed in this utility model; Figure 4 This is an exploded view of a tensioning device for a dry granulator proposed in this utility model.

[0014] Legend: 1. Outer shell; 2. Conveying structure; 201. Conveying pipe; 202. Feed hopper; 203. Servo motor; 204. Long rod; 205. Screw; 3. Adjustable crushing mechanism; 301. Fixed frame; 302. Telescopic rod; 303. Slider; 304. Connecting shaft; 305. Servo motor; 306. Crushing roller; 307. Groove; 4. Granulation structure; 401. Fixed shaft; 402. Receiving plate; 403. Knife groove; 404. Slide groove; 405. Synchronizing rod; 406. Electric cutter; 407. Granulation frame; 408. Electric granulator. Detailed Implementation

[0015] 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.

[0016] Reference Figure 1-4 One embodiment of this utility model is a tensioning device for a dry granulator, including an outer shell 1. A conveying structure 2 is connected to one side of the outer wall of the outer shell 1 for conveying medicine. An adjusting crushing mechanism 3 is provided at the output end of the conveying structure 2 for crushing the medicine into blocks. A granulation structure 4 is provided on one side of the outer wall of the adjusting crushing mechanism 3 for shearing the blocky medicine into granules.

[0017] The conveying structure 2 includes a conveying pipe 201, which is installed on one side of the outer wall of the outer shell 1. The top of the conveying pipe 201 is connected to a feed hopper 202. One end of the conveying pipe 201 extends into the interior of the outer shell 1. A servo motor 203 is fixedly connected to one side of the outer wall of the conveying pipe 201. The output end of the servo motor 203 passes through the conveying pipe 201 and is fixedly connected to a long rod 204. An auger 205 is fixedly connected to the outer wall of the long rod 204.

[0018] Specifically, the pharmaceutical raw materials are first fed into the conveying pipe 201 through the feed hopper 202. At this time, the servo motor 203 starts, and its output end drives the long rod 204 to rotate synchronously. The auger 205 on the outer wall of the long rod 204 rotates together with the long rod 204. The spiral blades of the auger 205 are in close contact with the inner wall of the conveying pipe 201, and can generate a continuous propulsive force during rotation, which stably conveys the pharmaceutical raw materials along the axial direction of the conveying pipe 201 into the outer shell 1, and finally accurately conveys them between the two rolling rollers 306 of the adjusting rolling mechanism 3, providing a continuous and uniform supply of raw materials for the subsequent rolling process and avoiding raw material accumulation or conveying interruption.

[0019] The adjusting compaction mechanism 3 includes a fixed frame 301, which is installed on one side of the outer wall of the outer shell 1. Telescopic rods 302 are installed on the upper and lower ends of the inner wall of the fixed frame 301. A slider 303 is installed on the output end of the telescopic rod 302. One end of a connecting shaft 304 is installed on one side of the outer wall of the slider 303. A servo motor 305 is fixedly connected to the other end of the connecting shaft 304. A compaction roller 306 is fixedly connected to the output end of the servo motor 305. The servo motor 305, the connecting shaft 304, and the slider 303 are all symmetrically arranged with respect to the compaction roller 306.

[0020] The inner wall of the fixed frame 301 has grooves 307 on both the left and right sides, and the slider 303 is slidably connected inside the grooves 307.

[0021] Specifically, before the raw pharmaceutical material is conveyed between the two crushing rollers 306, the distance between the two crushing rollers 306 can be adjusted by controlling the extension and retraction of the telescopic rod 302 according to the characteristics of the raw material, such as hardness and viscosity. When the telescopic rod 302 extends, its output end pushes the slider 303 to slide along the groove 307 on the inner wall of the fixed frame 301 towards the other crushing roller 306. The slider 303 drives the servo motor 305 and the crushing roller 306 to move synchronously through the connecting shaft 304, reducing the distance between the two crushing rollers 306. Conversely, when the telescopic rod 302 shortens, the distance increases, ensuring that the distance is adapted to the characteristics of the raw material. After the raw material is in place, the servo motor 305 drives the two crushing rollers 306 to rotate in opposite directions, using rotational pressure to compress the raw material into uniformly dense block-shaped medicine. The groove 307 simultaneously restricts the slider 303 from deviating, ensuring the stable operation of the crushing rollers 306.

[0022] The pelletizing structure 4 includes a fixed shaft 401. One end of the fixed shaft 401 is fixedly connected to the inner wall of the outer shell 1, and the other end of the fixed shaft 401 is rotatably connected to a receiving plate 402. A knife groove 403 is provided on one side of the outer wall of the receiving plate 402, and a sliding groove 404 is provided on the other side of the outer wall of the receiving plate 402. One end of a synchronizing rod 405 is slidably connected inside the sliding groove 404, and the other end of the synchronizing rod 405 is fixedly connected to one side of the outer wall of the connecting shaft 304. An electric cutter 406 is installed on one side of the inner wall of the outer shell 1.

[0023] The pelleting structure 4 also includes a pelleting frame 407 with a semi-circular ring structure as the main body. The pelleting frame 407 is installed on the inner wall of the outer shell 1. An electric pelleting knife 408 is installed inside the pelleting frame 407. The blade of the electric pelleting knife 408 has a bevel.

[0024] The shaft of the electric granulator 408 is coaxial with the main body of the granulator frame 407.

[0025] Specifically, after the lumpy medicine falls between the two crushing rollers 306, it first lands on the receiving plate 402. Since the receiving plate 402 is rotatably connected to the inner wall of the outer shell 1 through the fixed shaft 401, and is slidably connected to the synchronous rod 405 on the connecting shaft 304 through the slide groove 404, when the telescopic rod 302 of the crushing mechanism 3 is adjusted to drive the connecting shaft 304 to move, the synchronous rod 405 will slide in the slide groove 404 and push the receiving plate 402 to rotate around the fixed shaft 401, so that the receiving plate 402 always maintains an inclination angle that matches the falling trajectory of the lumpy medicine, ensuring that the lumpy medicine can slide along the receiving plate 402 to the electric cutter 406. At this time, the electric cutter 406 starts, and its cutter head cooperates with the cutter groove 403 on the receiving plate 402 to cut the block medicine into strip medicine. The strip medicine then falls into the granulation frame 407. The electric granulation cutter 408 rotates at high speed coaxially with the granulation frame 407. The inclined surface of its cutter head can reduce the contact resistance with the strip medicine, and press the strip medicine through the mesh of the granulation frame 407 to finally form granular medicine with uniform particle size, thus completing the entire granulation process.

[0026] Working principle: The raw material is first fed into the feed hopper 202 at the top of the conveying pipe 201 in the conveying structure 2. Then, the servo motor 203 starts, and its output drives the long rod 204 and the auger 205 on the outer wall of the long rod 204 to rotate. The auger 205 uses the cooperation of its spiral blades with the inner wall of the conveying pipe 201 to generate propulsion force, stably conveying the raw material along the conveying pipe 201 to the adjusting and crushing mechanism 3 inside the outer shell 1. During the raw material conveying process, the adjusting and crushing mechanism 3 can control the extension and retraction of the telescopic rods 302 at the upper and lower ends of the inner wall of the fixed frame 301 according to the characteristics of the raw material, such as hardness and viscosity. This pushes the slider 303 to slide along the grooves 307 on the left and right sides of the inner wall of the fixed frame 301. The slider 303 then drives the servo motor 305 and the crushing rollers 306 to move synchronously through the connecting shaft 304, achieving tension adjustment of the distance between the two crushing rollers 306. After the raw material reaches between the two crushing rollers 306, the servo motor 305 drives the two crushing rollers 306 to rotate in opposite directions, thus... The raw material is extruded into block-shaped medicine. After falling, the block-shaped medicine lands on the receiving plate 402 of the granulation structure 4. Since the receiving plate 402 is rotatably connected to the inner wall of the outer shell 1 through the fixed shaft 401 and slidably connected to the synchronous rod 405 on the connecting shaft 304 through the slide groove 404, when the connecting shaft 304 moves, it will push the receiving plate 402 to rotate around the fixed shaft 401 through the synchronous rod 405, so that the receiving plate 402 maintains a suitable tilt angle and guides the block-shaped medicine to slide towards the electric cutter. 406. The electric cutter 406 cooperates with the cutting groove 403 on the receiving plate 402 to cut the block-shaped medicine into strip-shaped medicine. The strip-shaped medicine then falls into the granulation frame 407, which is in the shape of a semi-circular ring. The electric granulating knife 408, which is coaxially arranged with the granulation frame 407, rotates at high speed. The inclined surface of its blade reduces the contact resistance with the strip-shaped medicine, and crushes the strip-shaped medicine through the mesh of the granulation frame 407, finally forming granules with uniform particle size, thus completing the entire granulation process.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioning device for a dry granulator, comprising an outer shell (1), characterized in that: The outer wall of the outer shell (1) is connected to a conveying structure (2) for conveying medicine. The output end of the conveying structure (2) is provided with an adjusting crushing mechanism (3) for crushing medicine into blocks. The outer wall of the adjusting crushing mechanism (3) is provided with a granulation structure (4) for cutting the block medicine into granules.

2. The tensioning device for a dry granulator according to claim 1, characterized in that: The conveying structure (2) includes a conveying pipe (201), which is installed on one side of the outer wall of the outer shell (1). The top of the conveying pipe (201) is connected to a feed hopper (202). One end of the conveying pipe (201) extends into the interior of the outer shell (1). A servo motor (203) is fixedly connected to one side of the outer wall of the conveying pipe (201). The output end of the servo motor (203) passes through the conveying pipe (201) and is fixedly connected to a long rod (204). An auger (205) is fixedly connected to the outer wall of the long rod (204).

3. The tensioning device for a dry granulator according to claim 1, characterized in that: The adjusting rolling mechanism (3) includes a fixed frame (301), which is installed on one side of the outer wall of the outer shell (1). The upper and lower ends of the inner wall of the fixed frame (301) are equipped with telescopic rods (302). The output end of the telescopic rod (302) is equipped with a slider (303). One end of the connecting shaft (304) is installed on one side of the outer wall of the slider (303). The other end of the connecting shaft (304) is fixedly connected to a servo motor (305). The output end of the servo motor (305) is fixedly connected to a rolling roller (306). The servo motor (305), the connecting shaft (304) and the slider (303) are all symmetrically arranged with respect to the rolling roller (306).

4. The tensioning device for a dry granulator according to claim 1, characterized in that: The granulation structure (4) includes a fixed shaft (401), one end of which is fixedly connected to the inner wall of the outer shell (1), and the other end of which is rotatably connected to a receiving plate (402). A knife groove (403) is provided on one side of the outer wall of the receiving plate (402), and a sliding groove (404) is provided on the other side of the outer wall of the receiving plate (402). One end of a synchronizing rod (405) is slidably connected inside the sliding groove (404), and the other end of the synchronizing rod (405) is fixedly connected to one side of the outer wall of the connecting shaft (304). An electric cutter (406) is installed on one side of the inner wall of the outer shell (1).

5. A tensioning device for a dry granulator according to claim 4, characterized in that: The granulation structure (4) also includes a granulation frame (407) with a semi-circular ring structure in the main body. The granulation frame (407) is installed on the inner wall of the outer shell (1). An electric granulation knife (408) is installed inside the granulation frame (407). The blade of the electric granulation knife (408) has a bevel.

6. A tensioning device for a dry granulator according to claim 5, characterized in that: The axis of the electric granulator (408) is coaxial with the main body of the granulator frame (407).

7. A tensioning device for a dry granulator according to claim 3, characterized in that: The inner wall of the fixed frame (301) is provided with grooves (307) on both the left and right sides, and the slider (303) is slidably connected inside the grooves (307).

Images