A granulator feeding mechanism

Abstract

This utility model relates to the field of pharmaceutical production equipment technology, and in particular to a granulator feeding mechanism, including a feeding hopper and a screw conveyor. The top of the feeding hopper has an installation notch into which a large-diameter screen plate is fitted. A placement platform is fixedly connected to the outer wall of the feeding hopper, and a drive motor is fixedly connected to the placement platform. A screw conveying structure is provided at the output end of the drive motor. A crushing mechanism for crushing larger raw materials is provided at the bottom of the feeding hopper. The feed inlet of the screw conveyor is located below the discharge outlet of the crushing mechanism. This utility model effectively intercepts larger materials by using the large-diameter screen plate installed at the top of the feeding hopper, preventing them from entering the screw conveyor and causing blockages. In the screw conveying structure, the cooperation between the rotating shaft and the screw block enables stable and efficient material transport. The crushing mechanism can pre-crush larger raw materials, making the particle size of the material entering the screw conveyor more uniform and suitable.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical production equipment technology, and in particular to a feeding mechanism for a granulator. Background Technology

[0002] In the field of pharmaceutical manufacturing equipment, granulators are key pieces of equipment for processing powdered materials into granules. The operational stability of their feeding mechanism directly affects the efficiency and quality of pharmaceutical production. Currently, most granulators use screw conveyors as feeding devices. These devices use the rotation of screw blades to propel materials along the conveying pipeline, achieving continuous material transport.

[0003] However, in actual production, due to the uneven particle size of the raw materials used in production, there are often large lumps or impurities mixed in. These larger raw materials are easy to get stuck in the feed inlet or inside the pipe of the screw conveyor, causing the screw conveyor to become blocked. Once a blockage occurs, it will not only reduce the efficiency of drug production and increase the cost of downtime maintenance, but may also cause deterioration due to the long-term retention of materials, affecting the quality and safety of drugs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing screw conveyors, which, once blocked, not only reduce drug production efficiency and increase downtime maintenance costs, but also may cause deterioration due to prolonged material retention, affecting drug quality and safety. Therefore, this invention proposes a feeding mechanism for a granulator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pellet mill feeding mechanism includes a feeding hopper and a screw conveyor. The top of the feeding hopper has an installation notch, in which a large-diameter screen plate is fitted. A placement platform is fixedly connected to the outer wall of the feeding hopper, and a drive motor is fixedly connected to the placement platform. The output end of the drive motor is provided with a screw conveying structure. A crushing mechanism for crushing larger raw materials is provided at the bottom of the feeding hopper, and the feed inlet of the screw conveyor is located below the discharge outlet of the crushing mechanism.

[0007] Preferably, the bottom of the installation notch is provided with a threaded groove, and the side wall of the large-diameter screen plate is fixedly connected with a fixing block that matches the installation notch, and the fixing block is threaded with a connecting bolt.

[0008] Preferably, the spiral conveying structure includes a rotating shaft rotatably disposed inside the hopper, a spiral block is welded and fixed to the outer wall of the rotating shaft, and a discharge port is provided below the end of the spiral block away from the drive motor.

[0009] Preferably, one end of the rotating shaft passes through the outer wall of the feeding hopper and is fixedly connected to the output end of the drive motor. The bottom of the feeding hopper is arranged in an inverted triangle shape, and the lowest point is arc-shaped. The spiral block is arranged at the lowest point inside the feeding hopper. Guide strips with their bottoms inclined towards the discharge port are fixedly connected to the inner walls on both sides of the feeding hopper.

[0010] Preferably, the crushing mechanism includes a housing connected to the bottom of the feeding hopper via a flange, and a crushing roller 1 and a crushing roller 2 arranged in parallel are rotatably connected inside the housing. A gear 1 and a gear 2 are rotatably connected to one side of the outer wall of the housing, and a drive motor 2 is fixedly connected to the other side of the housing.

[0011] Preferably, the output end of the second drive motor is fixedly connected to one end of the drive shaft of the second crushing roller, the other end of the drive shaft of the second crushing roller is fixedly connected to the first gear, and the drive shaft of the first crushing roller is fixedly connected to the second gear.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. When in use, this utility model can effectively intercept larger materials by using the large-diameter screen plate installed at the top of the hopper, preventing them from entering the screw conveyor and causing blockages. In the screw conveyor structure, the cooperation between the rotating shaft and the screw block can stably and efficiently transport materials. The inverted triangular and arc-shaped design at the bottom of the hopper, together with the guide strip, allows the materials to quickly converge and move towards the discharge port, reducing material residue and accumulation, lowering the risk of blockages, and thus significantly improving the efficiency of pharmaceutical production and reducing downtime caused by blockages.

[0014] 2. When in use, this utility model can pre-crush larger raw materials through the crushing mechanism, so that the particle size of the material entering the screw conveyor is more uniform and suitable, which helps the material to be mixed more evenly in the subsequent granulation process, improves the quality of medicines, further reduces the probability of equipment failure, and saves maintenance costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a pellet mill feeding mechanism proposed in this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of a large-diameter screen plate 4 for a pellet mill feeding mechanism proposed in this utility model;

[0017] Figure 3 A cross-sectional view of a pellet mill feeding mechanism proposed in this utility model. Figure 1 ;

[0018] Figure 4 A cross-sectional view of a pellet mill feeding mechanism proposed in this utility model. Figure 2 .

[0019] In the diagram: 1. Feeding hopper; 2. Screw conveyor; 3. Installation notch; 4. Large-diameter screen plate; 5. Placement platform; 6. Drive motor one; 7. Crushing mechanism; 8. Threaded groove; 9. Fixing block; 10. Connecting bolt; 11. Rotating shaft; 12. Screw block; 13. Guide bar; 14. Discharge port; 15. Outer shell; 16. Crushing roller one; 17. Crushing roller two; 18. Gear one; 19. Gear two; 20. Drive motor two. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-4 A pellet mill feeding mechanism includes a feeding hopper 1 and a screw conveyor 2. The top of the feeding hopper 1 has an installation notch 3, in which a large-diameter screen plate 4 is fitted. A placement platform 5 is fixedly connected to the outer wall of the feeding hopper 1, and a drive motor 6 is fixedly connected to the placement platform 5. The output end of the drive motor 6 is provided with a screw conveying structure. A crushing mechanism 7 for crushing larger raw materials is provided at the bottom of the feeding hopper 1. The feed inlet of the screw conveyor 2 is located below the discharge outlet of the crushing mechanism 7.

[0022] Furthermore, a threaded groove 8 is provided at the bottom of the installation notch 3, and a fixing block 9 that is compatible with the installation notch 3 is fixedly connected to the side wall of the large-diameter screen plate 4. A connecting bolt 10 is threadedly connected to the fixing block 9.

[0023] The threaded groove 8 at the bottom of the installation notch 3 cooperates with the fixing block 9 and connecting bolt 10 on the side wall of the large-diameter screen plate 4, enabling the quick disassembly and installation of the large-diameter screen plate 4. This detachable design facilitates timely cleaning and replacement when the screen plate is blocked or damaged, effectively reducing downtime for maintenance.

[0024] Furthermore, the screw conveyor structure includes a rotating shaft 11 rotatably disposed inside the hopper 1, a screw block 12 welded and fixed to the outer wall of the rotating shaft 11, and a discharge port 14 is provided below the end of the screw block 12 away from the drive motor 6.

[0025] The position and size of the discharge port 14 are precisely calculated to ensure that the material is discharged at a suitable speed and flow rate, and to connect smoothly with subsequent equipment. The spiral block 12, which is welded and fixed to the outer wall, adopts a special spiral angle design and is combined with the adaptation structure at the bottom of the feed hopper 1 to achieve efficient pushing of different materials according to the characteristics of the materials.

[0026] Furthermore, one end of the rotating shaft 11 passes through the outer wall of the feeding hopper 1 and is fixedly connected to the output end of the drive motor 6. The bottom of the feeding hopper 1 is arranged in an inverted triangle shape, and the lowest point is arc-shaped. The spiral block 12 is arranged at the lowest point inside the feeding hopper 1. The inner walls on both sides of the feeding hopper 1 are fixedly connected with guide strips 13 whose bottoms are inclined towards the discharge port 14.

[0027] Among them, the guide strips 13 on both sides of the inner wall of the feeding hopper 1 are designed with the bottom inclined towards the discharge port 14, which can effectively guide the material to the discharge port 14, prevent the material from being scattered in the hopper, further improve the material conveying efficiency, and reduce the material loss during the conveying process.

[0028] Furthermore, the crushing mechanism 7 includes a housing 15 connected to the bottom of the feeding hopper 1 via a flange. Inside the housing 15, a first crushing roller 16 and a second crushing roller 17 are rotatably connected. A first gear 18 and a second gear 19 are rotatably connected to one side of the outer wall of the housing 15. A second drive motor 20 is fixedly connected to the other side of the housing 15.

[0029] Driven by the second drive motor 20, the two crushing rollers can rotate in opposite directions and at different speeds through the meshing transmission of the first gear 18 and the second gear 19, forming a strong crushing force to fully squeeze and shear the larger raw materials that enter.

[0030] Furthermore, the output end of the second drive motor 20 is fixedly connected to one end of the drive shaft of the second crushing roller 17, the other end of the drive shaft of the second crushing roller 17 is fixedly connected to the first gear 18, and the drive shaft of the first crushing roller 16 is fixedly connected to the second gear 19.

[0031] The outer shell 15, which is connected to the bottom of the feeding hopper 1 via a flange, not only achieves a stable connection with the feeding hopper 1, but also provides reliable protection for the internal crushing components, preventing material splashing and dust overflow during the crushing process and ensuring a safe working environment.

[0032] It should be noted that the specific models and specifications of drive motor 6 and drive motor 20 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here. Both can be powered by external devices and controlled to turn on and off.

[0033] Working principle:

[0034] The material first enters the feeding hopper 1 through the large-diameter screen plate 4. The large-diameter screen plate 4 can filter out large impurities and ensure the uniformity of the raw materials. The drive motor 6 drives the screw conveyor structure to rotate. The screw block 12 pushes the material towards the discharge port 14. At the same time, the guide strip 13 guides the material to fall in a concentrated manner to avoid accumulation. The material falls into the crushing mechanism 7 below through the discharge port 14. The drive motor 20 drives the crushing roller 16 and crushing roller 27 to rotate in opposite directions through the gear 18 and gear 19, which squeezes and shears the larger raw materials. The crushed material enters the screw conveyor 2 through the discharge port to complete the subsequent conveying.

[0035] Throughout the process, the detachable large-diameter screen plate 4 facilitates cleaning and maintenance, the special design of the screw conveyor structure ensures efficient material delivery, and the differential speed double roller design of the crushing mechanism 7 achieves thorough crushing of the raw materials. The coordinated work of all components improves feeding efficiency and reduces material loss, while the flange connection and sealing design ensure operational safety and environmental cleanliness.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A granulator feeding mechanism comprising a feeding hopper (1) and a screw conveyor (2), characterized in that, The top of the feeding hopper (1) is provided with an installation notch (3), in which a large-diameter screen plate (4) is fitted. A placement platform (5) is fixedly connected to the outer wall of the feeding hopper (1), and a drive motor (6) is fixedly connected to the placement platform (5). A screw conveyor structure is provided at the output end of the drive motor (6). A crushing mechanism (7) for crushing large raw materials is provided at the bottom of the feeding hopper (1), and the feed inlet of the screw conveyor (2) is located below the discharge outlet of the crushing mechanism (7).

2. A granulator feed mechanism according to claim 1, wherein The bottom of the installation notch (3) is provided with a threaded groove (8), and the side wall of the large-diameter screen plate (4) is fixedly connected with a fixing block (9) that is compatible with the installation notch (3), and the fixing block (9) is threadedly connected with a connecting bolt (10).

3. A granulator feed mechanism according to claim 1, wherein The spiral conveying structure includes a rotating shaft (11) rotatably disposed inside the hopper (1), and a spiral block (12) is welded and fixed to the outer wall of the rotating shaft (11). A discharge port (14) is provided below the end of the spiral block (12) away from the drive motor (6).

4. The pellet mill feeding mechanism according to claim 3, characterized in that, One end of the rotating shaft (11) passes through the outer wall of the feeding hopper (1) and is fixedly connected to the output end of the drive motor (6). The bottom of the feeding hopper (1) is set in an inverted triangle shape, and the lowest point is set in an arc shape. The spiral block (12) is set at the lowest point inside the feeding hopper (1). The inner walls on both sides of the feeding hopper (1) are fixedly connected with guide strips (13) that are inclined towards the discharge port (14) at the bottom.

5. A granulator feed mechanism according to claim 1 wherein, The crushing mechanism (7) includes a housing (15) connected to the bottom of the feeding hopper (1) via a flange. Inside the housing (15) are two crushing rollers (16) and two crushing rollers (17) arranged in parallel. On one side of the outer wall of the housing (15) are two gears (18) and two gears (19). On the other side of the housing (15) is a drive motor (20).

6. A granulator feed mechanism according to claim 5, wherein The output end of the second drive motor (20) is fixedly connected to one end of the drive shaft of the second crushing roller (17), the other end of the drive shaft of the second crushing roller (17) is fixedly connected to the first gear (18), and the drive shaft of the first crushing roller (16) is fixedly connected to the second gear (19).

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