Medicine grinding device
By using a motor-driven moving rod and a rubber sleeve impact block structure, the problem of clogging in the colloidal abrasive hopper is solved, enabling efficient operation of the pharmaceutical grinding device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN GLALEI PHARM CO LTD
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-28
AI Technical Summary
Existing colloid mills are prone to hopper blockage when processing materials with high moisture content due to increased viscosity, which affects production efficiency.
A pharmaceutical grinding device was designed, which uses a motor to drive a moving rod to move up and down, combined with the vibration force transmission of a rubber sleeve and an impact block to prevent material blockage and break up the adhesion between particles, ensuring smooth material flow.
It effectively prevents material blockage, improves the efficiency and anti-blocking effect of grinding, and ensures the normal falling of materials and the continuity of the grinding process.
Smart Images

Figure CN224167661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding technology, and in particular to a pharmaceutical grinding device. Background Technology
[0002] Pharmaceutical processing and production is a process that involves a series of complex operations and processes to ultimately produce drugs that can be used clinically. It covers multiple stages from raw materials to finished products. During the processing, in order to grind the raw materials into extremely fine particles so that the drugs can be absorbed and utilized by the human body more quickly, colloid mills are used for grinding.
[0003] Currently, when using existing colloid mills, operators first pour the drugs to be ground into the hopper, and the grinding is carried out by the blades inside the colloid mill. Due to the small inner diameter of the bottom of the hopper, when the material has a high moisture content, the viscosity between the materials increases, making them prone to sticking together and agglomerating. This leads to poor flow in the funnel-shaped hopper and blockage. At this time, operators need to stop production to clean and unclog the blocked hopper, which undoubtedly increases the additional auxiliary time and extends the production cycle. To address these issues, we propose a drug grinding device. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pharmaceutical grinding device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A pharmaceutical grinding device includes a colloid mill, a hopper mounted on the top of the colloid mill, a motor installed inside the hopper, a connecting shaft connected to the output end of the motor, a moving rod sleeved on the outside of the connecting shaft, a limit block connected to the inner wall of the hopper, and a connecting groove adapted to the moving rod inside the limit block, and support rods distributed on the side of the motor.
[0007] Preferably, a protective cover is fitted around the outside of the motor, and the top of the protective cover is arc-shaped, with the end of the support rod connected to the outer wall of the protective cover.
[0008] Preferably, the top end of the movable rod is connected to a blocking block, and the blocking block is configured as a semi-circular structure.
[0009] Preferably, a connecting ring is fitted at the bottom of the hopper, and the bottom of the connecting ring is fixedly connected to the colloid mill. The side of the connecting ring is connected to the hopper by bolts.
[0010] Preferably, a crossbar is symmetrically connected to the outer side of the connecting shaft, and a slot is opened inside the crossbar. A return spring is connected to the inner wall of the slot, and the other end of the return spring is connected to the linkage rod. An impact rod is connected to the side of the linkage rod, and an impact block is connected to the inner wall of the hopper.
[0011] Preferably, the impact rod is configured as a cylindrical structure, and a rubber sleeve is provided on the outer side of the impact rod.
[0012] Preferably, the impact blocks are distributed in a ring array structure inside the hopper, and the impact blocks are configured as trapezoidal structures.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This device is equipped with a motor and a moving rod. During use, the motor drives the moving rod to move up and down, thereby clearing the material discharge part of the motor and effectively preventing material from clogging the bottom of the motor. This ensures the normal operation of the grinding process and effectively improves the working efficiency of the device.
[0015] 2. This device is equipped with rubber sleeves and impact blocks. During the forward and reverse rotation of the connecting shaft driven by the motor, the rubber sleeves intermittently collide with each set of impact blocks, transmitting the vibration force to the hopper. This causes relative movement between the material particles, breaking the adhesion and aggregation between the particles, reducing the cohesive force of the material, and allowing the material to redisperse and flow more easily, further improving the anti-clogging effect of this device. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a pharmaceutical grinding device proposed in this utility model;
[0017] Figure 2 for Figure 1 A three-dimensional cross-sectional schematic diagram of the colloid mill and hopper structure in the image;
[0018] Figure 3 for Figure 1 A three-dimensional cross-sectional view of the crossbar and return spring structure in the middle;
[0019] Figure 4 for Figure 1 A three-dimensional cross-sectional schematic diagram of the protective cover and support rod structure in the middle;
[0020] Figure 5 for Figure 1 A three-dimensional cross-sectional diagram of the barrier block and connecting ring structure.
[0021] In the diagram: 1. Colloid mill; 2. Hopper; 3. Motor; 4. Connecting shaft; 5. Moving rod; 6. Limiting block; 7. Blocking block; 8. Protective cover; 9. Support rod; 10. Connecting ring; 11. Crossbar; 12. Return spring; 13. Linkage rod; 14. Impact rod; 15. Rubber sleeve; 16. Impact block. Detailed Implementation
[0022] 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.
[0023] Reference Figure 1-5 A pharmaceutical grinding device includes a colloid mill 1, a hopper 2 mounted on the top of the colloid mill 1, a motor 3 inside the hopper 2, a connecting shaft 4 connected to the output end of the motor 3, a moving rod 5 sleeved on the outer side of the connecting shaft 4, a limit block 6 connected to the inner wall of the hopper 2, and a connecting groove adapted to the moving rod 5 inside the limit block 6, support rods 9 distributed on the side of the motor 3, an external thread on the outer wall of the connecting shaft 4, and a threaded groove adapted to the connecting shaft 4 inside the moving rod 5. Therefore, as the motor 3 drives the connecting shaft 4 to rotate forward and backward, the moving rod 5 can continuously move up and down. The forward and reverse rotation principle of the motor 3 is existing technology, and its speed and other parameters can be adjusted. The specific adjustment principle and working principle will not be described in detail here.
[0024] Furthermore, refer to Figure 2 It can be seen that a protective cover 8 is fitted on the outside of the motor 3, and the top of the protective cover 8 is set in an arc shape. The end of the support rod 9 is connected to the outer wall of the protective cover 8. The protective cover 8 can protect the outside of the motor 3. Since the top of the protective cover 8 is set in an arc shape, it can prevent the accumulation of materials. In addition, one end of the support rod 9 is connected to the protective cover 8, and the other end of the support rod 9 is connected to the inner wall of the hopper 2. Since the motor 3 and the protective cover 8 are fixedly connected, the support rod 9 can support the motor 3 and the protective cover 8.
[0025] Furthermore, refer to Figure 5 It can be seen that the top of the moving rod 5 is connected to the blocking block 7, and the blocking block 7 is set as a semi-circular structure. By setting the blocking block 7, the top of the moving rod 5 can be limited, thereby effectively preventing the moving rod 5 from being completely pulled out from the inside of the limiting block 6. Since the blocking block 7 is set as a semi-circular structure, it can also prevent the accumulation of materials.
[0026] Furthermore, refer to Figure 5It can be seen that the bottom end of the hopper 2 is fitted with a connecting ring 10, and the bottom end of the connecting ring 10 is fixedly connected to the colloid mill 1. The side of the connecting ring 10 is connected to the hopper 2 by bolts. The disassembly and assembly requirements of the hopper 2 can be met by the cooperation of the connecting ring 10 and the bolts.
[0027] Furthermore, refer to Figure 3 It can be seen that a crossbar 11 is symmetrically connected to the outer side of the connecting shaft 4, and a slot is opened inside the crossbar 11. A return spring 12 is connected to the inner wall of the slot, and the other end of the return spring 12 is connected to the linkage rod 13. An impact rod 14 is connected to the side of the linkage rod 13, and an impact block 16 is connected to the inner wall of the hopper 2. During use, through the cooperation of the linkage rod 13 and the impact rod 14, the impact rod 14 can be driven to intermittently collide with each set of impact blocks 16 during the forward and reverse rotation of the connecting shaft 4, and the vibration force is transmitted to the hopper 2, thereby accelerating the flow rate of the material.
[0028] Furthermore, refer to Figure 3 It can be seen that the impact rod 14 is set as a cylindrical structure, and a rubber sleeve 15 is fitted on the outside of the impact rod 14. Through the connection of the rubber sleeve 15, the outside of the impact rod 14 can be protected to effectively prevent it from directly colliding with the impact block 16. Since the impact rod 14 is set as a cylinder, its edge is arc-shaped, so when it collides with the impact block 16, it can drive the linkage rod 13 to move inside the slot of the crossbar 11.
[0029] Furthermore, refer to Figure 3 It can be seen that the impact blocks 16 are distributed in a ring array inside the hopper 2. The impact blocks 16 are set in a trapezoidal structure. The setting of multiple sets of impact blocks 16 can improve the unblocking effect of the hopper 2. Since the impact blocks 16 are set in a trapezoidal shape, it can effectively prevent materials from accumulating on the top of the impact blocks 16.
[0030] Working Principle: When using this invention, the operator first places the device in a suitable position, then connects the colloid mill 1 to the power supply and pours the material to be ground into the hopper 2. The material then falls into the grinding assembly under gravity for grinding. During the feeding process, the motor 3 drives the connecting shaft 4 to rotate continuously in both directions, causing the moving rod 5 and the bottom of the connecting shaft 4 to engage with a threaded connection. Through the restriction of two sets of limit blocks 6, the moving rod 5 can move up and down continuously to unclog the bottom of the colloid mill 1. Simultaneously, when the connecting shaft 4 rotates, it can also... The moving rubber sleeve 15 intermittently impacts the impact block 16. During the impact, the rubber sleeve 15 compresses the lateral movement of the linkage rod 13 and causes the return spring 12 connected to the end of the linkage rod 13 to deform, so as to ensure the impact and reset work of the impact rod 14 and the rubber sleeve 15. The vibration force generated when the impact rod 14 and the impact block 16 collide can realize the re-dredging of the hopper 2, which can effectively ensure the normal falling of materials. After grinding, the workers can pour clean water into the inside of the hopper 2 for cleaning, so as to prepare for subsequent work. The above is the entire working principle of this utility model.
[0031] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0032] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0033] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A pharmaceutical grinding apparatus, comprising a colloid mill (1), characterized in that, The top of the colloid mill (1) is equipped with a hopper (2), and the inside of the hopper (2) is equipped with a motor (3). The output end of the motor (3) is connected to a connecting shaft (4), and a moving rod (5) is sleeved on the outside of the connecting shaft (4). A limiting block (6) is connected to the inner wall of the hopper (2), and a connecting groove adapted to the moving rod (5) is opened inside the limiting block (6). Support rods (9) are distributed on the side of the motor (3).
2. The pharmaceutical grinding apparatus according to claim 1, characterized in that, The motor (3) is fitted with a protective cover (8) on its outer side, and the top of the protective cover (8) is set in an arc shape. The end of the support rod (9) is connected to the outer wall of the protective cover (8).
3. The pharmaceutical grinding apparatus according to claim 1, characterized in that, The top of the moving rod (5) is connected to a blocking block (7), and the blocking block (7) is set as a semi-circular structure.
4. The pharmaceutical grinding apparatus according to claim 1, characterized in that, The bottom end of the hopper (2) is fitted with a connecting ring (10), and the bottom end of the connecting ring (10) is fixedly connected to the colloid mill (1). The side of the connecting ring (10) is connected to the hopper (2) by bolts.
5. A pharmaceutical grinding apparatus according to claim 1, characterized in that, A crossbar (11) is symmetrically connected to the outside of the connecting shaft (4), and a slot is provided inside the crossbar (11). A return spring (12) is connected to the inner wall of the slot, and the other end of the return spring (12) is connected to the linkage rod (13). An impact rod (14) is connected to the side of the linkage rod (13), and an impact block (16) is connected to the inner wall of the hopper (2).
6. A pharmaceutical grinding apparatus according to claim 5, characterized in that, The impact rod (14) is configured as a cylindrical structure, and a rubber sleeve (15) is fitted on the outer side of the impact rod (14).
7. A pharmaceutical grinding apparatus according to claim 5, characterized in that, The impact blocks (16) are arranged in a ring array inside the hopper (2), and the impact blocks (16) are configured as trapezoidal structures.