Medicine quality detection sampling device

Abstract

The utility model relates to the technical field of pharmaceutical quality detection, and discloses a medicine quality detection sampling device which comprises a workbench, a supporting seat is fixedly connected to the top of the workbench, a center gear is movably connected to the center of the top of the supporting seat, and three sets of planetary gears are annularly arranged at the top of the supporting seat around the center gear at equal intervals. The output end of the outer side of the planetary gear is in meshed connection with an inner gear ring, the bottom of the inner gear ring is in frictional contact with the top of the supporting seat, the top of the inner gear ring is fixedly connected with a sampling disc, sample grooves are annularly formed in the top of the sampling disc at equal intervals, and a servo motor is fixedly connected to the bottom of the supporting seat; according to the device, through a central gear and a planetary gear system driven by a servo motor, stable rotation of a sampling disc and uniform exposure of a sample groove are realized, the sampling stability is improved, the representativeness and the accuracy of a sampling result are also ensured, and compared with traditional manual operation or a simple rotation mechanism, the device has higher efficiency and lower error rate, and the device is suitable for popularization and application. The practicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical quality testing technology, specifically a drug quality testing sampling device. Background Technology

[0002] In the pharmaceutical production and quality control process, pharmaceutical quality testing sampling devices are indispensable key equipment. Their core function is to randomly extract samples from pharmaceutical production batches for subsequent quality testing and analysis, ensuring that the quality of the drugs meets relevant standards and regulations. This step is crucial for ensuring the safety, efficacy, and consistency of pharmaceuticals. With the development of the modern pharmaceutical industry, the types of drugs are becoming increasingly diverse, and the scale of production is constantly expanding, leading to increasingly higher requirements for pharmaceutical quality testing. Therefore, developing a device capable of efficient and accurate pharmaceutical sampling is of great significance for improving the efficiency and accuracy of pharmaceutical quality testing and ensuring public medication safety. However, traditional pharmaceutical quality testing sampling techniques have revealed many shortcomings in practical applications. On the one hand, traditional sampling devices often rely on manual operation, which is not only time-consuming and labor-intensive but also easily affected by human factors such as the operator's skill level and fatigue, leading to unstable and non-repeatable sampling results. On the other hand, traditional sampling devices have defects in the design and rotation mechanism of the sampling plate, failing to guarantee uniform exposure of the sample slot and the stability of the sampling process, thus affecting the representativeness and accuracy of the sampling. These shortcomings not only reduce the efficiency of drug quality testing but may also mislead drug quality assessment and even endanger patients' lives and health. Therefore, there is an urgent need for a drug quality testing sampling device that can overcome the deficiencies of traditional technologies and achieve efficient, accurate, and automated sampling to meet the high requirements of the modern pharmaceutical industry for drug quality testing.

[0003] For example, Chinese patent CN221883184U discloses a drug quality testing sampling device. This patented device includes components such as a workbench, a support base, and a sampling tray, with multiple sample slots on the sampling tray for placing drug samples. In use, the operator needs to manually align the sampling device with the sample slots and then perform the sampling. While this method can achieve basic sampling functions, it has significant shortcomings: First, the sampling tray design is relatively simple, making it difficult to ensure stability and uniform exposure of the sample slots during the sampling process, potentially affecting the representativeness and accuracy of the sampling. Second, the sampling process relies on manual operation, which is inefficient and prone to introducing human error. Therefore, we propose a drug quality testing sampling device. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a drug quality testing sampling device that solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a drug quality testing sampling device, comprising a workbench, a support base fixedly connected to the top of the workbench, a central gear movably connected to the center of the top of the support base, three sets of planetary gears equidistantly arranged around the central gear on the top of the support base, the planetary gears meshing with the central gear, an internal gear ring meshing with the outer output end of the planetary gears, the bottom of the internal gear ring being in frictional contact with the top of the support base, a sampling disk fixedly connected to the top of the internal gear ring, sample slots equidistantly formed on the top of the sampling disk, a servo motor fixedly connected to the bottom of the support base, the servo motor rotation shaft passing through the top of the support base, and the servo motor rotation shaft fixedly connected to the bottom of the central gear.

[0008] Preferably, a fixed frame is fixedly connected to the top of the workbench on the side away from the support base. The fixed frame is perpendicular to the workbench. A pulley is movably connected to the outer wall of the top side of the fixed frame. A forward and reverse motor is fixedly connected to the outer wall of the top of the fixed frame near the pulley. The rotating shaft of the forward and reverse motor is fixedly connected to the outer wall of the pulley. A second pulley is movably connected to the outer wall of the bottom side of the fixed frame. A belt is sleeved between the pulley and the second pulley.

[0009] Preferably, a movable block is fixedly connected to the outer wall of the belt, and a limit rod is fixedly connected to the outer wall of the fixing frame near the positive and negative motors, with the outer wall of the limit rod movably sleeved on the movable block.

[0010] Preferably, a movable arm is movably connected to the outer wall of the movable block on the side away from the belt, a connecting arm is movably connected to the output end of the movable arm away from the movable block, and a movable seat is movably connected to the output end of the connecting arm on the side away from the movable arm.

[0011] Preferably, the pulley, forward and reverse motor, second pulley, belt, moving block, limit rod, movable arm, and connecting arm are provided in three sets and arranged in an XYZ axis on the top of the worktable. The ends of the connecting arms are all movably connected to the movable seat.

[0012] Preferably, an air pump is fixedly connected to the top of the movable seat, the bottom output end of the air pump extends to the bottom of the movable seat, and a sampling pump head is fixedly connected to the bottom output end of the air pump.

[0013] Preferably, the sampling pump head is located above the sampling disk.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a drug quality testing sampling device, which has the following beneficial effects:

[0016] 1. This drug quality testing sampling device, compared to prior art document CN221883184U, discloses a sampling technique relying on manual operation. However, this application effectively improves the automation level of sampling by introducing a servo motor-driven central gear and planetary gear system. This design is more efficient and stable than traditional manual operation techniques, avoiding sampling errors caused by human factors and ensuring the accuracy and repeatability of sampling results. Automated sampling not only reduces labor costs but also greatly improves sampling efficiency, making the drug quality testing process smoother and more reliable.

[0017] 2. Regarding the prior art document CN221883184U, the sampling disc design in that document is relatively simple and cannot guarantee uniform exposure of the sample slots. This application, through an optimized sampling disc design and a stable rotation mechanism, significantly improves the representativeness and accuracy of the sampling. Driven by a servo motor, the sampling disc rotates smoothly, ensuring that each sample slot is uniformly exposed at the sampling position, avoiding sampling deviations caused by uneven sampling positions. This design is more scientific and reasonable than traditional sampling discs, effectively improving the accuracy and reliability of drug quality testing.

[0018] 3. Regarding the prior art document CN221883184U, which did not address the precise positioning and automated sampling technology of the sampling pump head, this application achieves precise positioning and automated sampling of the sampling pump head through an XYZ shaft transmission system and the coordination of an air pump with the sampling pump head. This innovative design not only improves sampling accuracy but also significantly simplifies the sampling process and reduces operator intervention. Compared to traditional sampling methods, this automated sampling technology offers higher efficiency and a lower error rate, providing more reliable technical support for drug quality testing. This substantial advancement represents a qualitative leap in the performance of the drug quality testing sampling device, meeting the urgent needs of the modern pharmaceutical industry for efficient, accurate, and automated sampling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the sampling tray of this utility model;

[0021] Figure 3 This is a front view schematic diagram of the present utility model.

[0022] In the diagram: 1. Workbench; 2. Support base; 3. Central gear; 4. Planetary gear; 5. Internal gear ring; 6. Sampling plate; 7. Sample slot; 8. Fixing frame; 9. Pulley; 10. Forward and reverse motor; 11. Second pulley; 12. Belt; 13. Moving block; 14. Limiting rod; 15. Movable arm; 16. Connecting arm; 17. Moving base; 18. Air pump; 19. Sampling pump head. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 A drug quality testing sampling device includes a workbench 1, a support base 2 fixedly connected to the top of the workbench 1, a central gear 3 movably connected to the center of the top of the support base 2, three sets of planetary gears 4 equidistantly arranged in a ring around the central gear 3 on the top of the support base 2, the planetary gears 4 being meshed with the central gear 3, an internal gear ring 5 being meshed with the outer output end of the planetary gear 4, the bottom of the internal gear ring 5 being in frictional contact with the top of the support base 2, a sampling disk 6 fixedly connected to the top of the internal gear ring 5, sample slots 7 being equidistantly opened in a ring on the top of the sampling disk 6, a servo motor 20 fixedly connected to the bottom of the support base 2, the rotation shaft of the servo motor 20 passing through the top of the support base 2, and the rotation shaft of the servo motor 20 being fixedly connected to the bottom of the central gear 3.

[0025] Furthermore, a fixed frame 8 is fixedly connected to the top of the workbench 1 on the side away from the support base 2. The fixed frame 8 is perpendicular to the workbench 1. A pulley 9 is movably connected to the outer wall of the top side of the fixed frame 8. A forward and reverse motor 10 is fixedly connected to the outer wall of the top side of the fixed frame 8 near the pulley 9. The rotation shaft of the forward and reverse motor 10 is fixedly connected to the outer wall of the pulley 9. A second pulley 11 is movably connected to the outer wall of the bottom side of the fixed frame 8. A belt 12 is sleeved between the pulley 9 and the second pulley 11.

[0026] Furthermore, a movable block 13 is fixedly connected to the outer wall of the belt 12, and a limit rod 14 is fixedly connected to the outer wall of the fixed frame 8 near the positive and negative motors 10. The outer wall of the limit rod 14 is movably sleeved on the movable block 13.

[0027] Furthermore, a movable arm 15 is movably connected to the outer wall of the movable block 13 on the side away from the belt 12, a connecting arm 16 is movably connected to the output end of the movable arm 15 away from the movable block 13, and a movable seat 17 is movably connected to the output end of the connecting arm 16 on the side away from the movable arm 15.

[0028] Furthermore, there are three sets of pulley 9, forward and reverse motor 10, second pulley 11, belt 12, moving block 13, limit rod 14, movable arm 15, and connecting arm 16, which are arranged in an XYZ axis on the top of the workbench 1. The ends of the connecting arms 16 are movably connected to the movable seat 17.

[0029] Furthermore, an air pump 18 is fixedly connected to the top of the movable base 17, and the bottom output end of the air pump 18 extends to the bottom of the movable base 17. A sampling pump head 19 is fixedly connected to the bottom output end of the air pump 18.

[0030] Furthermore, the sampling pump head 19 is located above the sampling disk 6.

[0031] Structural Description: 1. Workbench 1: Its function is to serve as the basic support platform for the entire sampling device, ensuring the stable installation and normal operation of each component. It is located at the bottom of the device, and the support base 2, fixing frame 8, etc. are all fixedly connected to it.

[0032] 2. Support base 2: Its function is to support and fix the core components such as the central gear 3, planetary gear 4, internal gear ring 5 and sampling disk 6, to ensure their correct positional relationship and stable operation. It is located at the top center of the worktable 1.

[0033] 3. Center gear 3: Its function is to receive the power from the servo motor 20 and transmit the power to the planetary gear 4 through meshing connection, driving the planetary gear system to operate. It is located at the top center of the support base 2 and is fixedly connected to the rotating shaft of the servo motor 20.

[0034] 4. Planetary gear 4: Its function is to receive the power transmitted by the central gear 3 and rotate around the central gear 3. At the same time, through meshing with the internal gear ring 5, it transmits the power to the internal gear ring 5 to drive the sampling disk 6 to rotate. It is located on the top of the support base 2 and is arranged in three sets at equal intervals around the central gear 3.

[0035] 5. Internal gear ring 5: Its function is to act as the meshing object of planetary gear 4, receive the power transmitted by planetary gear 4, and drive the sampling disk 6 to rotate smoothly. It is located on the outside of planetary gear 4, with its bottom in frictional contact with the top of support base 2, and its top fixedly connected to sampling disk 6.

[0036] 6. Sampling tray 6: Its function is to carry the drug sample. By rotating, the sample slot 7 is evenly exposed at the sampling position. It is located on the top of the inner toothed ring 5 and is fixedly connected to the inner toothed ring 5.

[0037] 7. Sample slot 7: Its function is to place drug samples for sampling pump head 19 to take samples. It is located on top of sampling plate 6 and is arranged in a ring at equal intervals.

[0038] 8. Servo motor 20: Its function is to provide a power source to drive the central gear 3 to rotate, thereby driving the entire planetary gear system and sampling disk 6 to operate. It is located at the bottom of the support base 2, and the rotating shaft passes through the top of the support base 2 and is fixedly connected to the bottom of the central gear 3.

[0039] 9. Fixing frame 8: Its function is to support and fix the pulley 9, forward and reverse motor 10, second pulley 11 and limit rod 14, etc., to provide a stable support platform for the XYZ axis transmission system. It is located on the top of the worktable 1 away from the support seat 2 and is perpendicular to the worktable 1.

[0040] 10. Pulley 9: Its function is to serve as one of the core components of the transmission system. It is connected to the second pulley 11 via belt 12, receives power from the forward and reverse motors 10 and transmits it to the moving block 13. It is located on the outer wall of the top side of the fixed frame 8.

[0041] 11. Forward and reverse motor 10: Its function is to provide a power source to drive the pulley 9 to rotate in the forward and reverse directions, thereby driving the moving block 13 to move back and forth in the X-axis direction. It is located on the outer wall of the top of the fixed frame 8 near the pulley 9.

[0042] 12. Second pulley 11: Its function is to serve as the other end of the transmission system. It is connected to pulley 9 via belt 12 and together drives the moving block 13 to move. It is located on the outer wall of the bottom side of the fixed frame 8.

[0043] 13. Belt 12: Its function is to connect the pulley 9 and the second pulley 11, transmit the power of the forward and reverse motor 10 to the moving block 13, and is sleeved between the pulley 9 and the second pulley 11.

[0044] 14. Moving block 13: Its function is to receive the power transmitted by the belt 12, move back and forth along the X-axis under the guidance of the limit rod 14, and drive the movable arm 15 and the connecting arm 16 to move. It is located on the outer wall of the belt 12 and is movably sleeved on the limit rod 14.

[0045] 15. Limiting rod 14: Its function is to limit the movement direction of the moving block 13 and ensure its stable movement in the X-axis direction. It is located on the outer wall of the fixed frame 8 near the forward and reverse motor 10.

[0046] 16. Movable arm 15: Its function is to connect the moving block 13 and the connecting arm 16, converting the movement of the moving block 13 into the displacement of the connecting arm 16. It is located on the outer wall of the moving block 13 away from the belt 12.

[0047] 17. Connecting arm 16: Its function is to connect the movable arm 15 and the moving seat 17, and to further transmit the displacement of the movable arm 15 to the moving seat 17 to realize the displacement in the Y-axis and Z-axis directions. It is located at the output end of the movable arm 15 away from the moving block 13.

[0048] 18. Movable seat 17: Its function is to support the air pump 18 and the sampling pump head 19. Driven by the XYZ axis transmission system, it enables the sampling pump head 19 to be precisely positioned in three-dimensional space. It is located at the output end of the connecting arm 16 on the side away from the movable arm 15.

[0049] 19. Air pump 18: Its function is to provide a power source to drive the sampling pump head 19 to perform sampling operations. It is located on top of the movable base 17.

[0050] 20. Sampling pump head 19: Its function is to directly extract drug samples from the sample slot 7 for subsequent quality testing and analysis. It is located at the bottom output end of the movable seat 17 and above the sampling plate 6.

[0051] Working Principle: First, the core of the device lies in the planetary gear system built on the support base 2, including a central gear 3 and planetary gears 4 surrounding it. When the servo motor acts on the central gear 3, it drives the planetary gears 4 to rotate around it, while simultaneously revolving along the inner wall of the internal gear ring 5. This design not only achieves smooth rotation of the sampling disk 6 but also ensures that the sample slot 7 is uniformly and continuously exposed to the sampling position, providing a stable platform for subsequent sampling operations. Next, to achieve precise control of the sampling position, the device employs a transmission system where the pulley 9 driven by the forward and reverse motors 10 is connected to the second pulley 11 via a belt 12. The bidirectional rotation capability of the forward and reverse motors 10 allows the belt 12 to drive the moving block 13 to move back and forth along the X-axis on the limiting rod 14 of the fixed frame 8. This action is further converted into flexible displacement of the moving seat 17 in the Y and Z-axis directions through the transmission of the movable arm 15 and connecting arm 16. Three sets of such transmission systems (one set each for the X, Y, and Z axes) work together to ensure that the sampling pump head 19 can be accurately positioned above any sample slot 7, achieving precise positioning in three-dimensional space. Finally, the sampling process is completed jointly by the air pump 18 and the sampling pump head 19. After the moving seat 17 carries the sampling pump head 19 and accurately aligns it with the target sample slot, the air pump 18 starts, providing power to the sampling pump head 19 through its bottom output end, causing it to extract the drug sample from the sample slot. After sampling is completed, the sampling pump head 19 releases the sample under the control of the air pump 18 for subsequent quality testing and analysis.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pharmaceutical quality control sampling device comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected with a support seat (2), the top center of the support seat (2) is movably connected with a center gear (3), three groups of planetary gears (4) are arranged on the top of the support seat (2) around the center gear (3) at equal intervals, the planetary gears (4) are in meshing connection with the center gear (3), the outer side output end of the planetary gear (4) is in meshing connection with an internal gear (5), the bottom of the internal gear (5) is in frictional contact with the top of the support seat (2), the top of the internal gear (5) is fixedly connected with a sampling disc (6), a sample groove (7) is formed in the top of the sampling disc (6) at equal intervals, the bottom of the support seat (2) is fixedly connected with a servo motor (20), the rotating shaft of the servo motor (20) penetrates through the top of the support seat (2), and the rotating shaft of the servo motor (20) is fixedly connected to the bottom of the center gear (3).

2. The device of claim 1, wherein: The top of the workbench (1) is fixedly connected with a support seat (2), the top center of the support seat (2) is movably connected with a center gear (3), three groups of planetary gears (4) are arranged on the top of the support seat (2) around the center gear (3) at equal intervals, the planetary gears (4) are in meshing connection with the center gear (3), the outer side output end of the planetary gear (4) is in meshing connection with an internal gear (5), the bottom of the internal gear (5) is in frictional contact with the top of the support seat (2), the top of the internal gear (5) is fixedly connected with a sampling disc (6), a sample groove (7) is formed in the top of the sampling disc (6) at equal intervals, the bottom of the support seat (2) is fixedly connected with a servo motor (20), the rotating shaft of the servo motor (20) penetrates through the top of the support seat (2), and the rotating shaft of the servo motor (20) is fixedly connected to the bottom of the center gear (3).

3. The device of claim 2, wherein: The outer side wall of the belt (12) is fixedly connected with a moving block (13), the outer side wall of the side of the fixed frame (8) close to the reversible motor (10) is fixedly connected with a limiting rod (14), and the outer side wall of the limiting rod (14) is movably sleeved with the moving block (13).

4. The device of claim 3, wherein: The outer side wall of the side of the moving block (13) away from the belt (12) is movably connected with a movable arm (15), the output end of one end of the movable arm (15) away from the moving block (13) is movably connected with a connecting arm (16), and the output end of the side of the connecting arm (16) away from the movable arm (15) is movably connected with a moving seat (17).

5. The device of claim 4, wherein: The belt pulley (9), the reversible motor (10), the second belt pulley (11), the belt (12), the moving block (13), the limiting rod (14), the movable arm (15), and the connecting arm (16) are provided with three groups, and are arranged on the top of the workbench (1) in the form of XYZ axes, and the ends of the connecting arms (16) are movably connected with the moving seat (17).

6. The device of claim 4, wherein: The top of the moving seat (17) is fixedly connected with an air pump (18), the bottom output end of the air pump (18) extends to the bottom of the moving seat (17), and the bottom output end of the air pump (18) is fixedly connected with a sampling pump head (19).

7. The device of claim 6, wherein: The sampling pump head (19) is located above the sampling disc (6).

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