Grinding machine with cooling function for medicine inspection
By combining a rotary drive mechanism and a semiconductor cooling chip, the problems of temperature rise and cross-contamination during the grinding process of pharmaceutical testing grinders are solved, achieving efficient and uniform pharmaceutical grinding and convenient equipment maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Liaoning Provincial Drug Inspection and Testing Institute (Liaoning Provincial Drug Research Institute)
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-04
AI Technical Summary
Existing grinding mills for pharmaceutical testing are prone to overheating during the grinding process, which can cause heat-sensitive drugs to deteriorate. They also have low grinding efficiency and poor uniformity, and the grinding components are difficult to disassemble and are prone to cross-contamination.
A rotary drive mechanism is used to achieve synchronous counter-rotation of the grinding head and the inner cylinder. Combined with a semiconductor cooling chip and a heat dissipation system, dual cooling is achieved. The inner cylinder design facilitates disassembly and cleaning.
It improves grinding efficiency and sample powder uniformity, avoids deterioration of heat-sensitive drugs, ensures the accuracy of test results, prevents cross-contamination, and reduces maintenance costs.
Smart Images
Figure CN224585969U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical testing equipment technology, specifically a pharmaceutical testing grinder with a cooling function. Background Technology
[0002] In the pharmaceutical testing process, drug samples must first be ground into a uniform fine powder before subsequent testing operations such as component analysis and content determination can be performed. Currently, most pharmaceutical testing grinders on the market achieve crushing and grinding by driving the grinding components to rotate at high speed and rubbing against the sample. However, this mechanical friction generates a large amount of heat, causing the temperature inside the grinding chamber to rise.
[0003] For heat-sensitive drugs such as vitamins and enzyme preparations, elevated temperatures can easily cause sample components to volatilize, degrade, or denature, directly leading to deviations in test results. Although some grinders have attempted to add heat dissipation structures (such as external heat sinks), their heat dissipation efficiency is low, making it impossible to quickly balance the heat generated during grinding. In addition, most existing grinders grind in one direction, resulting in low grinding efficiency and poor uniformity of sample powder, which makes the grinding effect of the drugs insufficient and affects subsequent testing. Furthermore, the grinding components are inconvenient to disassemble and clean, easily causing cross-contamination between different samples, making it difficult to meet the stringent requirements of drug testing for equipment accuracy, cleanliness, and stability. Utility Model Content
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a pharmaceutical testing grinder with a cooling function, which solves the problems of easy temperature rise during the grinding process leading to deterioration of heat-sensitive drugs, low grinding efficiency and poor uniformity, and inconvenient disassembly of grinding components that easily cause cross-contamination.
[0005] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A pharmaceutical grinding machine with a cooling function includes a base and a frame fixedly connected to the base. Lifting mechanisms are installed on both sides of the frame, and a liftable grinding cylinder is disposed between the two lifting mechanisms. The grinding cylinder includes an outer cylinder and a rotating ring. The rotating ring is rotatably connected to the top of the outer cylinder, and a removable inner cylinder is disposed on the rotating ring. A rotating rod is rotatably connected to the top center of the frame, and a grinding head with a semi-circular cross-section is fixedly connected to the lower end of the rotating rod. A rotation drive mechanism is installed on one side of the frame near the rotating rod. The rotation drive mechanism can drive the grinding head and the inner cylinder to rotate synchronously in opposite directions, thereby increasing the pharmaceutical grinding effect.
[0006] Furthermore, the lifting mechanism includes a cylinder, a slider, and a support member, wherein the slider is slidably connected to a corresponding track groove on the frame, the cylinder is installed on one side of the frame, and the bottom of its output shaft is connected and fixed to the slider, and the support member is fixedly connected to the slider.
[0007] Furthermore, the grinding cylinder also includes a base plate, and the side of the support member away from the slider is fixedly connected to the base plate. A spring extension component is provided between the upper surface of the base plate and the lower surface of the outer cylinder. The spring extension component includes an inverted block fixedly connected to the lower surface of the outer cylinder, a round rod slidably connected to the inverted block, and a spring sleeved on the round rod. The lower end of the round rod is fixedly connected to the base plate, and a protective cap is fixedly connected to the upper end of the round rod. The outer diameter of the protective cap is larger than the inner diameter of the sliding hole on the inverted block, which can prevent the inverted block from slipping off the upper end of the round rod.
[0008] Furthermore, an array of inserted rods are fixedly connected to the upper surface of the rotating ring, and an annular convex edge is provided at the outer edge of the top of the inner cylinder. The convex edge is provided with a insertion hole that matches the inserted rod at the corresponding position of the inserted rod, and a clamping nut is threadedly connected to the inserted rod above the convex edge.
[0009] Furthermore, the rotary drive mechanism includes an annular plate, which is fixedly connected to the frame via a connecting rod; a gear ring, which is rotatably connected to the inner wall of the annular plate; two levers, which are symmetrically fixed to the lower surface of the gear ring, and ear plates are fixedly connected to both sides of the rotating ring, with the levers inserted into corresponding holes in the ear plates; a driven gear, which is coaxially fixedly connected to the outer wall of the rotating rod; and a motor, which is mounted on the frame, with a driving gear coaxially arranged at the bottom of the motor output shaft, the driving gear meshing with the gear ring and the driven gear respectively.
[0010] Furthermore, an array of semiconductor cooling chips are embedded at the bottom of the outer cylinder. The cold end of the semiconductor cooling chip extends to the inner side of the outer cylinder, forming a cooling space between the outer cylinder and the inner cylinder. The cooling space can gather the cold air generated by the cold end of the semiconductor cooling chip, improving the cooling efficiency of the inner cylinder. The hot end of the semiconductor cooling chip extends to the outer side of the outer cylinder and is fixedly connected to a heat sink plate. The heat sink plate is provided with equidistantly distributed heat sink fins.
[0011] Furthermore, an L-shaped plate is fixedly connected to the lower surface of the outer cylinder on one side of the semiconductor cooling chip, and fans are installed on the L-shaped plate at equal intervals. The fans are used to blow air onto the heat sink and heat sink fins to accelerate the dissipation of heat from the hot end.
[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a pharmaceutical grinding machine with a cooling function, which has the following beneficial effects: 1. In this utility model, the rotary drive mechanism drives the grinding head and the inner cylinder to rotate synchronously in opposite directions through the simultaneous meshing of the active gear with the driven gear and the gear ring. This bidirectional friction crushes the sample, increasing the grinding efficiency by more than 30% compared to traditional unidirectional grinding. The sample powder has a higher uniformity in particle size, meeting the stringent requirements for sample fineness in pharmaceutical testing. At the same time, the lever is slidably connected in the corresponding hole in the ear plate. By levering the rotating ring and the inner cylinder, the rotation of the grinding cylinder is not affected during the lifting and lowering process. This design is highly functional and has a good performance.
[0013] 2. This utility model utilizes a semiconductor cooling chip whose cold end directly acts on the cooling space between the outer and inner cylinders. Combined with an active cooling system consisting of a heat sink, heat dissipation fins, and a fan, it forms a dual cooling structure, ensuring that the temperature inside the inner cylinder remains below 25°C. This effectively prevents the degradation and denaturation of heat-sensitive drug components, ensuring the accuracy of subsequent test results. Furthermore, the inner cylinder is installed by engaging the insertion hole on the convex edge with the insertion rod on the swivel ring. The inner cylinder can be quickly disassembled simply by unscrewing the clamping nut, facilitating the cleaning of residual samples on the inner wall and preventing cross-contamination between different samples. The connection structure of each component is simple, making it convenient to replace parts during later maintenance and reducing equipment maintenance costs. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the grinding cylinder and grinding head of this utility model when separated; Figure 2 This is a schematic diagram of the lifting mechanism in this utility model; Figure 3 This is a schematic diagram of the structure of the grinding cylinder when disassembled in this utility model; Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a bottom perspective view of the grinding cylinder in this utility model; Figure 6 This utility model Figure 5 Enlarged view of the structure at point B; Figure 7 This is a schematic diagram of the rotary drive mechanism in this utility model; Figure 8 This is a schematic diagram of the structure of this utility model in use.
[0015] In the diagram: 1. Frame; 2. Lifting mechanism; 201. Cylinder; 202. Slider; 203. Support component; 3. Base; 4. Track groove; 5. Grinding cylinder; 501. Outer cylinder; 502. Rotary ring; 503. Inner cylinder; 504. Protruding edge; 505. Insertion hole; 506. Insertion rod; 507. Ear plate; 508. Base plate; 509. C-shaped block; 5010. Round rod; 5011. Spring; 5012. Protective cap; 5013. L-shaped plate; 5014. Fan; 5015. Semiconductor cooling chip; 5016. Heat sink; 5017. Heat sink fins; 6. Grinding head; 7. Rotating rod; 8. Rotary drive mechanism; 801. Connecting rod; 802. Ring plate; 803. Gear ring; 804. Motor; 805. Driven gear; 806. Drive gear; 807. Lever. Detailed Implementation
[0016] 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.
[0017] Example like Figure 1 , Figure 3 , Figure 5 and Figure 8 As shown in the figure, an embodiment of the present invention provides a grinding machine for pharmaceutical testing with a cooling function, including a base 3 and a frame 1 fixedly connected to the base 3. Lifting mechanisms 2 are installed on both sides of the frame 1, and a lifting grinding cylinder 5 is provided between the two lifting mechanisms 2. The grinding cylinder 5 includes an outer cylinder 501 and a rotating ring 502. The rotating ring 502 is rotatably connected to the top of the outer cylinder 501, and a removable inner cylinder 503 is provided on the rotating ring 502. A rotating rod 7 is rotatably connected to the top center of the frame 1, and a grinding head 6 with a semi-circular cross section is fixedly connected to the lower end of the rotating rod 7. A rotation drive mechanism 8 is installed on one side of the frame 1 located on the rotating rod 7. The rotation drive mechanism 8 can drive the grinding head 6 and the inner cylinder 503 to rotate synchronously in opposite directions, thereby increasing the pharmaceutical grinding effect.
[0018] It should be noted that the base 3 provides stable support for the equipment, the frame 1 serves as the main frame to support all functional components, and the lifting mechanisms 2 on both sides can drive the grinding cylinder 5 to rise and fall, so as to achieve contact or separation between the grinding head 6 and the grinding cylinder 5. The outer cylinder 501 of the grinding cylinder 5 is the basic support component, and the rotating ring 502 can rotate on the top of the outer cylinder 501 and drive the inner cylinder 503 to rotate synchronously. The inner cylinder 503 is used to hold the drug sample to be ground. The rotating rod 7 on the top of the frame 1 can drive the grinding head 6, which has a semi-circular cross section at the lower end, to rotate, and work with the inner cylinder 503 to grind the sample. The rotation drive mechanism 8, through a specific transmission structure, makes the grinding head 6 and the inner cylinder 503 rotate synchronously in opposite directions, using bidirectional friction to increase the grinding force, shorten the grinding time, and at the same time improve the uniformity of the sample powder, so as to meet the requirements of drug testing for sample fineness.
[0019] like Figure 1 and Figure 2 As shown, in some embodiments, the lifting mechanism 2 includes a cylinder 201, a slider 202 and a support member 203, wherein the slider 202 is slidably connected to the corresponding track groove 4 opened on the frame 1, the cylinder 201 is installed on one side of the frame 1 and its output shaft bottom is connected and fixed to the slider 202, and the support member 203 is fixedly connected to the slider 202.
[0020] It should be noted that when the height of the grinding cylinder 5 needs to be adjusted, the cylinder 201 is activated. The output shaft of the cylinder 201 retracts, which can drive the slider 202 to slide up and down along the track groove 4 opened on the frame 1. The track groove 4 plays a limiting and guiding role in the movement direction of the slider 202, preventing the slider 202 from deviating. The support member 203, which is fixedly connected to the slider 202, moves synchronously with the slider 202, thereby driving the grinding cylinder 5, which is connected to the support member 203, to rise and fall, so as to realize the contact grinding or separation of the grinding head 6 and the sample in the grinding cylinder 5, which can meet the grinding needs of samples of different batches and different heights.
[0021] like Figure 3 and Figure 4 As shown, in some embodiments, the grinding cylinder 5 further includes a base plate 508. The side of the support member 203 away from the slider 202 is fixedly connected to the base plate 508. An elastic member is provided between the upper surface of the base plate 508 and the lower surface of the outer cylinder 501. The elastic member includes an inverted block 509 fixedly connected to the lower surface of the outer cylinder 501, a round rod 5010 slidably connected to the inverted block 509, and a spring 5011 sleeved on the round rod 5010. The lower end of the round rod 5010 is fixedly connected to the base plate 508, and a protective cap 5012 is fixedly connected to the upper end of the round rod 5010. The outer diameter of the protective cap 5012 is larger than the inner diameter of the sliding hole on the inverted block 509, which can prevent the inverted block 509 from slipping off the upper end of the round rod 5010.
[0022] It should be noted that the support member 203 provides stable support for the grinding cylinder 5 through the base plate 508. The elastic extension component between the base plate 508 and the outer cylinder 501 can buffer the pressure during the grinding process. When the grinding head 6 presses down to contact the sample, the outer cylinder 501 is subjected to downward pressure, which drives the inverted block 509 fixed on the lower surface of the outer cylinder 501 to slide down along the round rod 5010. At this time, the spring 5011 sleeved on the round rod 5010 is compressed. The elastic reaction force generated by the spring 5011 can keep the sample in the inner cylinder 503 in proper contact with the grinding head 6, avoiding excessive pressure that could lead to excessive squeezing of the sample or damage to the equipment. It can also ensure that the medicine is in full contact with the inner cylinder 503 and the grinding head 6, thus ensuring the grinding effect. The protective cap 5012 at the upper end of the round rod 5010 has an outer diameter larger than the inner diameter of the sliding hole on the inverted block 509, which can prevent the inverted block 509 from slipping off the upper end of the round rod 5010, ensuring the structural stability of the elastic extension component.
[0023] like Figure 1 and Figure 3 As shown, in some embodiments, the upper surface of the rotating ring 502 is fixedly connected with an array of inserted rods 506, and an annular flange 504 protrudes from the outer edge of the top of the inner cylinder 503. The flange 504 has an insertion hole 505 that is adapted to the inserted rod 506 at the corresponding position of the inserted rod 506, and a clamping nut is threadedly connected to the inserted rod 506 above the flange 504.
[0024] It should be noted that the array of inserted rods 506 on the upper surface of the rotating ring 502 is compatible with the insertion holes 505 on the top flange 504 of the inner cylinder 503. When installing the inner cylinder 503, align the insertion holes 505 with the inserted rods 506 and insert them to achieve initial positioning of the inner cylinder 503 and the rotating ring 502. A clamping nut is threaded onto the inserted rods 506 above the flange 504. After tightening the nut, the lower surface of the nut abuts tightly against the upper surface of the flange 504, firmly fixing the inner cylinder 503 onto the rotating ring 502 and ensuring that the inner cylinder 503 rotates synchronously with the rotating ring 502. When disassembling, simply unscrew the clamping nut to remove the inner cylinder 503 upwards, which facilitates cleaning of residual samples on the inner wall of the inner cylinder 503, avoids cross-contamination between different samples, and facilitates replacement of the inner cylinder 503 to adapt to grinding different types of samples.
[0025] like Figure 1 , Figure 3 , Figure 5 and Figure 7As shown, in some embodiments, the rotary drive mechanism 8 includes an annular plate 802, which is fixedly connected to the frame 1 via a connecting rod 801; a gear ring 803, which is rotatably connected to the inner wall of the annular plate 802; two levers 807, which are symmetrically fixed to the lower surface of the gear ring 803, and ear plates 507 are fixedly connected to both sides of the rotating ring 502, with the levers 807 inserted into corresponding holes in the ear plates 507; a driven gear 805, which is coaxially fixedly connected to the outer wall of the rotating rod 7; and a motor 804, which is mounted on the frame 1, with a driving gear 806 coaxially arranged at the bottom of the output shaft of the motor 804, which meshes with the gear ring 803 and the driven gear 805 respectively.
[0026] It should be noted that the annular plate 802 is fixed to the frame 1 by the connecting rod 801, providing mounting support for the gear ring 803. The gear ring 803 can rotate freely on the inner wall of the annular plate 802. After the motor 804 is started, its output shaft drives the coaxially fixed driving gear 806 to rotate. The driving gear 806 simultaneously meshes with the driven gear 805 and the gear ring 803 for transmission: on the one hand, the driving gear 806 drives the driven gear 805 to rotate, and the driven gear 805 drives the coaxially fixed rotating rod 7 and the lower grinding head 6 to rotate; on the other hand, the driving gear 806 drives the gear ring 803 to rotate, and the gear ring... Two symmetrical levers 807 on the lower surface of 803 rotate synchronously with the gear ring 803. The levers 807 are inserted into the holes of the ear plates 507 on both sides of the rotating ring 502, thereby driving the rotating ring 502 and the inner cylinder 503 to rotate. Since the meshing direction of the driving gear 806 is opposite to that of the driven gear 805 and the gear ring 803, the grinding head 6 and the inner cylinder 503 are finally rotated synchronously in opposite directions, which enhances the grinding effect of the sample. At the same time, the levers 807 and the holes of the ear plates 507 are slidably connected. When the grinding cylinder 5 is raised and lowered, the levers 807 can slide up and down in the holes of the ear plates 507 without affecting the transmission relationship and ensuring the functionality of the equipment.
[0027] like Figure 5 and Figure 6 As shown, in some embodiments, an array of semiconductor cooling chips 5015 are embedded at the bottom of the outer cylinder 501. The cold end of the semiconductor cooling chip 5015 extends to the inner side of the outer cylinder 501, so that a cooling space is formed between the outer cylinder 501 and the inner cylinder 503. The cooling space can gather the cold air generated by the cold end of the semiconductor cooling chip 5015, thereby improving the cooling efficiency of the inner cylinder 503. The hot end of the semiconductor cooling chip 5015 extends to the outer side of the outer cylinder 501 and is fixedly connected to a heat sink 5016. The heat sink 5016 is provided with heat dissipation fins 5017 that are evenly distributed.
[0028] It should be noted that when the array of semiconductor cooling chips 5015 embedded at the bottom of the outer cylinder 501 is energized, the cold end generates a low temperature and extends to the inside of the outer cylinder 501. This causes cold air to accumulate in the closed cooling space formed between the outer cylinder 501 and the inner cylinder 503. The cold air conducts heat through the side wall of the inner cylinder 503, absorbing the heat generated by the friction between the sample and the grinding head 6 and the inner cylinder 503 during the grinding process, thereby reducing the internal temperature of the inner cylinder 503 and preventing the degradation and denaturation of heat-sensitive drug components. The heat generated by the hot end of the semiconductor cooling chip 5015 is transferred to the heat dissipation plate 5016 extending to the outside of the outer cylinder 501. The equidistantly distributed heat dissipation fins 5017 on the heat dissipation plate 5016 increase the heat exchange area, which can quickly disperse and transfer heat to the air, improve heat dissipation efficiency, and ensure continuous and stable cooling at the cold end of the semiconductor cooling chip 5015.
[0029] like Figure 6 As shown, in some embodiments, an L-shaped plate 5013 is fixedly connected to the lower surface of the outer cylinder 501 on one side of the semiconductor cooling chip 5015, and fans 5014 are installed on the L-shaped plate 5013 at equal intervals. The fans 5014 are used to blow air onto the heat sink 5016 and the heat sink fins 5017 to accelerate the dissipation of heat at the hot end.
[0030] It should be noted that the L-shaped plate 5013 on the lower surface of the outer cylinder 501 provides a mounting carrier for the fan 5014. After the fan 5014 is powered on and started, its airflow direction is towards the heat sink 5016 and heat sink fins 5017, which accelerates the airflow on the surface of the heat sink 5016 and heat sink fins 5017, and quickly removes the heat transferred from the hot end of the thermoelectric cooler 5015 to the heat sink 5016 and heat sink fins 5017. This prevents heat accumulation from causing a decrease in the cooling efficiency of the thermoelectric cooler 5015, further ensuring the cooling effect in the cooling space and ensuring that the temperature inside the inner cylinder 503 is always below 25°C, meeting the grinding requirements of heat-sensitive drugs.
[0031] The working principle and usage steps of this utility model are as follows: First, the drug sample to be ground is placed into the inner cylinder 503. The inner cylinder 503 is installed on the rotating ring 502 by the insertion hole 505 of the top protrusion 504 of the inner cylinder 503 engaging with the insertion rod 506 on the upper surface of the rotating ring 502. Then, the clamping nut on the insertion rod 506 is tightened to fix the inner cylinder 503 and the rotating ring 502. Subsequently, the cylinder 201 of the lifting mechanism 2 is activated. The output shaft of the cylinder 201 retracts, and the slider 202 slides upward along the track groove 4 on the frame 1. The slider 202 drives the support member 203 to rise synchronously. The support member 203 further pushes the bottom plate 508 of the grinding cylinder 5 to rise until the drug sample in the grinding cylinder 5 is ground. When the grinding head 6 at the lower end of the rotating rod 7 at the top of the frame 1 contacts the bottom plate 508 and the outer cylinder 501, the spring extension component between them comes into play. After the outer cylinder 501 is subjected to the pressure of the grinding head 6, it drives the incised block 509 to slide down along the round rod 5010 and compress the spring 5011. The elastic reaction force of the spring 5011 keeps the sample in the inner cylinder 503 in proper contact with the grinding head 6. At the same time, the protective cap 5012 prevents the incised block 509 from slipping off the upper end of the round rod 5010. Then, the motor 804 of the rotary drive mechanism 8 and the semiconductor cooling chip 5015 at the bottom of the outer cylinder 501 and the fan 5014 on the L-shaped plate 5013 are started. The output shaft of the motor 804 drives the drive gear 806 to rotate. The driving gear 806 meshes with and drives the driven gear 805 to rotate. The driven gear 805 drives the rotating rod 7 and the grinding head 6 at its lower end to rotate. On the other hand, the driving gear 806 meshes with and drives the gear ring 803 to rotate. The gear ring 803 rotates along the inner wall of the annular plate 802, and the two levers 807 on its lower surface rotate synchronously. The levers 807 drive the rotating ring 502 to rotate through the ear plates 507 on both sides of the inserted rotating ring 502. The rotating ring 502 then drives the inner cylinder 503 to rotate. Since the meshing transmission directions of the driving gear 806, the driven gear 805, and the gear ring 803 are opposite, the grinding head 6 and the inner cylinder 503 rotate synchronously in opposite directions. The bidirectional friction enhances the grinding effect on the drug sample. As a result, the grinding efficiency and the uniformity of the fine powder in the sample are improved. During the grinding process, the cold end of the semiconductor cooling chip 5015 extends to the inside of the outer cylinder 501, so that the cooling space between the outer cylinder 501 and the inner cylinder 503 accumulates cold air. The heat generated by grinding is absorbed through the side wall of the inner cylinder 503, which prevents the temperature inside the inner cylinder 503 from rising and causing the heat-sensitive medicine to deteriorate. At the same time, the heat generated by the hot end of the semiconductor cooling chip 5015 is transferred to the heat sink 5016 on the outside. The heat sink fins 5017 on the heat sink 5016 increase the heat exchange area. The fan 5014 blows air on the heat sink 5016 and the heat sink fins 5017 to accelerate the heat dissipation and ensure that the semiconductor cooling chip 5015 continues to cool efficiently.After grinding is complete, turn off motor 804, semiconductor cooling chip 5015, and fan 5014. Extend the output shaft of control cylinder 201 to lower the grinding cylinder 5, separating the grinding head 6 from the inner cylinder 503. Unscrew the clamping nut on the insertion rod 506 to remove the inner cylinder 503 and pour out the ground sample. This also facilitates cleaning of the inner cylinder 503, preventing cross-contamination between different samples, thus completing the entire pharmaceutical grinding operation.
[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A pharmaceutical grinding machine with a cooling function, comprising a base (3) and a frame (1) fixedly connected to the base (3), characterized in that: Lifting mechanisms (2) are installed on both sides of the frame (1), and a liftable grinding cylinder (5) is provided between the two lifting mechanisms (2). The grinding cylinder (5) includes... outer cylinder(501); A rotating ring (502) is rotatably connected to the top of the outer cylinder (501), and a removable inner cylinder (503) is provided on the rotating ring (502). A rotating rod (7) is rotatably connected to the top center of the frame (1), and a grinding head (6) with a semi-circular cross section is fixedly connected to the lower end of the rotating rod (7). A rotating drive mechanism (8) is installed on one side of the frame (1) located on the rotating rod (7). The rotating drive mechanism (8) can drive the grinding head (6) and the inner cylinder (503) to rotate synchronously in opposite directions, thereby increasing the grinding effect of the medicine.
2. The pharmaceutical grinding mill with cooling function according to claim 1, characterized in that: The lifting mechanism (2) includes a cylinder (201), a slider (202) and a support (203). The slider (202) is slidably connected to the corresponding track groove (4) of the frame (1). The cylinder (201) is installed on one side of the frame (1) and its output shaft is fixedly connected to the slider (202). The support (203) is fixedly connected to the slider (202).
3. A pharmaceutical grinding mill with cooling function according to claim 2, characterized in that: The grinding cylinder (5) also includes a base plate (508). The support member (203) is fixedly connected to the base plate (508) on the side away from the slider (202). An elastic member is provided between the upper surface of the base plate (508) and the lower surface of the outer cylinder (501). The elastic member includes a U-shaped block (509) fixedly connected to the lower surface of the outer cylinder (501), a round rod (5010) slidably connected to the U-shaped block (509), and a spring (5011) sleeved on the round rod (5010). The lower end of the round rod (5010) is fixedly connected to the base plate (508), and a protective cap (5012) is fixedly connected to the upper end of the round rod (5010). The outer diameter of the protective cap (5012) is larger than the inner diameter of the sliding hole on the U-shaped block (509), which can prevent the U-shaped block (509) from slipping off the upper end of the round rod (5010).
4. A pharmaceutical grinding mill with cooling function according to claim 1, characterized in that: The upper surface of the rotating ring (502) is fixedly connected with an array of inserted rods (506), and an annular flange (504) is provided at the outer edge of the top of the inner cylinder (503). The flange (504) is provided with a hole (505) that is adapted to the inserted rod (506) at the corresponding position of the inserted rod (506), and a clamping nut is threaded on the inserted rod (506) above the flange (504).
5. A pharmaceutical grinding mill with cooling function according to claim 1, characterized in that: The rotary drive mechanism (8) includes The annular plate (802) is fixedly connected to the frame (1) by a connecting rod (801); A toothed ring (803) is rotatably connected to the inner wall of an annular plate (802); Two levers (807) are provided. The two levers (807) are symmetrically fixed on the lower surface of the toothed ring (803), and ear plates (507) are fixedly connected to both sides of the rotating ring (502). The levers (807) are inserted into the corresponding holes opened in the ear plates (507). Driven gear (805) is coaxially fixedly connected to the outer wall of rotating rod (7); The motor (804) is mounted on the frame (1), and the bottom of the output shaft of the motor (804) is coaxially provided with a drive gear (806), which meshes with the gear ring (803) and the driven gear (805) respectively.
6. A pharmaceutical grinding mill with cooling function according to claim 1, characterized in that: The bottom of the outer cylinder (501) is embedded with an array of semiconductor cooling chips (5015). The cold end of the semiconductor cooling chip (5015) extends to the inner side of the outer cylinder (501), so that a cooling space is formed between the outer cylinder (501) and the inner cylinder (503). The cooling space can gather the cold air generated by the cold end of the semiconductor cooling chip (5015) to improve the cooling efficiency of the inner cylinder (503). The hot end of the semiconductor cooling chip (5015) extends to the outer side of the outer cylinder (501) and is fixedly connected to a heat sink (5016). The heat sink (5016) is provided with heat sink fins (5017) that are evenly distributed.
7. A pharmaceutical grinding mill with cooling function according to claim 6, characterized in that: The lower surface of the outer cylinder (501) is fixedly connected to an L-shaped plate (5013) on one side of the semiconductor cooling chip (5015), and fans (5014) are installed on the L-shaped plate (5013) at equal intervals. The fans (5014) are used to blow air onto the heat sink (5016) and heat sink fins (5017) to accelerate the dissipation of heat at the hot end.