Sampling device for pharmaceutical detection

Abstract

The utility model discloses a sampling device for pharmacy detection, and relates to the technical field of pharmacy detection sampling, the sampling device comprises a protective box body, the upper end of the protective box body is fixedly connected with an external rack, the upper end of the external rack is provided with an air cylinder, the output end of the air cylinder is fixedly connected with a pull rod, and the pull rod is fixedly connected with a pull rod. The sampling device comprises an air cylinder, a pull rod is arranged on the outer side of the air cylinder, a first piston is fixedly connected to the outer side of the pull rod, a liquid medicine containing pipe is arranged on the outer side of the first piston, and the liquid medicine containing pipe is arranged on the inner side of an external rack. When the first piston moves upwards, negative pressure can be formed in an inner cavity of a liquid medicine containing pipe, liquid medicine enters a feeding pipe through a feeding hole and then flows into the liquid medicine containing pipe through a connecting pipe, at the moment, the second piston can be blocked and limited through a limiting block, and then the sampling amount of the liquid medicine can be accurately controlled.

Description

A sampling device for pharmaceutical testing Technical Field

[0001] This utility model relates to the field of pharmaceutical testing and sampling, and in particular to a sampling device for pharmaceutical testing. Background Technology

[0002] In the pharmaceutical field, liquid drugs occupy an important position in clinical applications due to their advantages such as rapid absorption, high bioavailability, and ease of dosage adjustment. Therefore, accurate and uncontaminated sampling is crucial for drug quality control during pharmaceutical testing.

[0003] Existing sampling devices for testing lack precision in controlling the sample volume, making it difficult to accurately limit the amount of drug solution taken. This can easily lead to over- or under-sampling, which may not only waste pharmaceutical raw materials but also result in inaccurate test results. Secondly, after sampling, the feed tube of traditional sampling devices is prone to leaving drug solution residues on its exterior. If not cleaned thoroughly and promptly, these residues may dry and solidify, affecting the accuracy of subsequent sampling and potentially causing bacterial growth that contaminates subsequent drug solution samples, thus impacting the reliability of drug quality testing. To address these issues, we propose a sampling device for pharmaceutical testing. Summary of the Invention

[0004] The main objective of this invention is to provide a sampling device for pharmaceutical testing, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sampling device for pharmaceutical testing includes a protective housing. An external frame is fixedly connected to the upper end of the protective housing. A cylinder is mounted on the upper end of the external frame. A pull rod is fixedly connected to the output end of the cylinder. A first piston is fixedly connected to the outer side of the pull rod. A liquid medicine holding tube is disposed on the outer side of the first piston. The liquid medicine holding tube is disposed on the inner side of the external frame. A connecting pipe is fixedly connected to the lower end of the liquid medicine holding tube. The connecting pipe is disposed at the lower end of the protective housing. A feed pipe is fixedly connected to the lower end of the connecting pipe. A cleaning component is disposed on the outer side of the feed pipe.

[0007] Preferably, the feed tube has multiple feed holes on its outer side, a second piston is slidably connected to the inner side of the feed tube, the second piston is fixedly connected to the lower end of the pull rod, and a limit block is fixedly connected to the inner side of the upper end of the feed tube, the inner diameter of the limit block being smaller than the outer diameter of the second piston.

[0008] Preferably, the cleaning component includes a cleaning ring, which is slidably connected to the outside of the feed pipe. Two rotating seats are fixedly installed on the outside of the cleaning ring, and a drive component is rotatably connected to the inner side of each of the two rotating seats.

[0009] Preferably, the drive assembly includes an electric telescopic rod, which is fixedly installed inside the protective housing. An L-shaped connecting rod is fixedly connected to the output end of the electric telescopic rod. The L-shaped connecting rod is located at the lower end of the protective housing, and the other end of the L-shaped connecting rod is rotatably connected to the inner side of the rotating seat.

[0010] Preferably, a rotating shaft is fixedly connected to the inner side of the rotating seat, and a through hole corresponding to the rotating shaft is opened on the outer side of the L-shaped connecting rod. The L-shaped connecting rod is rotatably connected to the outer side of the rotating shaft through the through hole.

[0011] Preferably, two sliders are fixedly connected to the inner side of the cleaning ring, and two grooves corresponding to the sliders are opened on the outer side of the feed pipe, with the sliders slidably connected to the inner side of the grooves.

[0012] Preferably, an insertion head is fixedly connected to the lower end of the feed tube, and the insertion head is a conical design.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This sampling device for pharmaceutical testing, by activating a cylinder, the output end of the cylinder pulls the lever upward, thereby driving the first piston and the second piston to rise synchronously. When the first piston moves upward, it will cause a negative pressure to be formed in the inner cavity of the liquid holding tube. The liquid enters the feed tube through the feed hole, and then flows into the liquid holding tube through the connecting tube. At this time, the second piston can be blocked and limited by the limiting block, thereby achieving precise control of the liquid sampling volume. Moreover, the second piston is in contact with the limiting block to prevent the liquid from flowing back and avoid reducing the sampling volume, which would cause inaccurate test results.

[0015] 2. This sampling device for pharmaceutical testing, after sampling is completed, activates an electric telescopic rod. The output end of the electric telescopic rod drives an L-shaped connecting rod to move. The L-shaped connecting rod is connected to a cleaning ring via a rotating seat, which in turn causes the cleaning ring to slide downwards on the outside of the feed tube to clean the outside of the feed tube and scrape off any residual drug liquid adhering to the outside of the feed tube, thereby ensuring the cleanliness of the outside of the feed tube and improving the reliability of drug quality testing. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of a sampling device for pharmaceutical testing according to this utility model;

[0017] Figure 2 is a cross-sectional view of the overall structure of a sampling device for pharmaceutical testing according to this utility model;

[0018] Figure 3 is a partial structural schematic diagram of a sampling device for pharmaceutical testing according to this utility model;

[0019] Figure 4 is an enlarged structural schematic diagram of point A of a sampling device for pharmaceutical testing according to this utility model;

[0020] Figure 5 is an enlarged structural diagram of section B of a sampling device for pharmaceutical testing according to this utility model.

[0021] In the diagram: 1. Protective housing; 2. External frame; 3. Cylinder; 4. Liquid container pipe; 5. Pull rod; 6. First piston; 7. Second piston; 8. Connecting pipe; 9. Feed pipe; 10. Insert head; 11. Feed hole; 12. Electric telescopic rod; 13. L-shaped connecting rod; 14. Cleaning ring; 15. Sliding block; 16. Slide groove; 17. Rotating seat; 18. Rotating shaft; 19. Limit block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As shown in Figures 1-5, a sampling device for pharmaceutical testing includes a protective housing 1. An external frame 2 is fixedly connected to the upper end of the protective housing 1. A cylinder 3 is installed on the upper end of the external frame 2. A pull rod 5 is fixedly connected to the output end of the cylinder 3. A first piston 6 is fixedly connected to the outside of the pull rod 5. A liquid holding tube 4 is provided on the outside of the first piston 6. The liquid holding tube 4 is located on the inside of the external frame 2. A connecting pipe 8 is fixedly connected to the lower end of the liquid holding tube 4. The connecting pipe 8 is located at the lower end of the protective housing 1. A feed pipe 9 is fixedly connected to the lower end of the connecting pipe 8. A cleaning component is provided on the outside of the feed pipe 9.

[0024] In this embodiment, a plurality of feed holes 11 are provided on the outer side of the feed pipe 9, and a second piston 7 is slidably connected to the inner side of the feed pipe 9. The second piston 7 is fixedly connected to the lower end of the pull rod 5, and a limit block 19 is fixedly connected to the inner side of the upper end of the feed pipe 9. The inner diameter of the limit block 19 is smaller than the outer diameter of the second piston 7.

[0025] Specifically, the protective housing 1 is first installed at the lower end of the external frame 2. Before sampling the liquid medicine, the first piston 6 is at the bottom of the liquid medicine holding tube 4, and the second piston 7 is at the bottom of the feed tube 9. When sampling the liquid medicine, the protective housing 1 can be easily moved by the external frame 2, so that the feed tube 9 can be inserted into the liquid medicine to be sampled. At this time, the cylinder 3 is activated, and the output end of the cylinder 3 will pull the lever 5 upward, which will drive the first piston 6 and the second piston 7 upward. When the first piston 6 moves upward, a negative pressure will be formed in the inner cavity of the liquid medicine holding tube 4. At this time, the liquid medicine enters through the feed hole 11. The feed pipe 9 then flows into the inner cavity of the liquid medicine container 4 through the connecting pipe 8. At this time, the design of the limiting block 19 can easily block and limit the second piston 7, thereby controlling the amount of liquid medicine sampled. Furthermore, the contact between the second piston 7 and the limiting block 19 can also block the liquid medicine sampled in the liquid medicine container 4, preventing backflow of the liquid medicine and loss of the sampled liquid medicine, thus reducing the amount of sampled liquid medicine. More specifically, the external frame 2 is existing technology, and its operation principle is similar to that of a robotic arm when it moves. It is familiar to and used by those skilled in the art, so it will not be described in detail in this application document.

[0026] In this embodiment, the cleaning component includes a cleaning ring 14, which is slidably connected to the outside of the feed pipe 9. Two rotating seats 17 are fixedly installed on the outside of the cleaning ring 14. A drive component is rotatably connected to the inside of each of the two rotating seats 17. The drive component includes an electric telescopic rod 12, which is fixedly installed inside the protective housing 1. An L-shaped connecting rod 13 is fixedly connected to the output end of the electric telescopic rod 12. The L-shaped connecting rod 13 is located at the lower end of the protective housing 1. The other end of the L-shaped connecting rod 13 is rotatably connected to the inside of the rotating seat 17. A rotating shaft 18 is fixedly connected to the inside of the rotating seat 17. A through hole corresponding to the rotating shaft 18 is opened on the outside of the L-shaped connecting rod 13. The L-shaped connecting rod 13 is rotatably connected to the outside of the rotating shaft 18 through the through hole.

[0027] Specifically, after sampling is completed, two electric telescopic rods 12 are activated simultaneously. The output end of the electric telescopic rod 12 will drive the L-shaped connecting rod 13 to move. The L-shaped connecting rod 13 is connected to the cleaning ring 14 through the rotating seat 17, which in turn causes the cleaning ring 14 to slide downward on the outside of the feed pipe 9 to clean the outside of the feed pipe 9 and scrape off the residual medicine adhering to the outside of the feed pipe 9, thereby ensuring the cleanliness of the feed pipe 9.

[0028] In this embodiment, two sliders 15 are fixedly connected to the inner side of the cleaning ring 14, and two grooves 16 corresponding to the sliders 15 are opened on the outer side of the feed pipe 9. The sliders 15 are slidably connected to the inner side of the grooves 16.

[0029] Specifically, by having the slider 15 inside the cleaning ring 14 slide within the groove 16, the stability of the cleaning ring 14 when sliding on the outside of the feed pipe 9 can be improved.

[0030] In this embodiment, an insertion head 10 is fixedly connected to the lower end of the feed pipe 9, and the insertion head 10 has a conical design.

[0031] Specifically, the insert 10 connected to the lower end of the feed tube 9 is a conical design. Its tip can easily overcome the tension and resistance of the liquid surface and be smoothly inserted into the container. Compared with other shapes of insert 10, the conical insert 10 experiences less resistance during insertion, so that the operator does not need to spend too much effort to insert the feed tube 9 into the appropriate sampling position, which greatly improves the efficiency of the sampling operation.

[0032] It should be noted that this utility model is a sampling device for pharmaceutical testing. The user installs the protective housing 1 at the lower end of the external frame 2. Before sampling the liquid medicine, the first piston 6 is at the bottom of the liquid medicine holding tube 4, and the second piston 7 is at the bottom of the feed tube 9. When sampling the liquid medicine, the external frame 2 can easily move the protective housing 1, allowing the conical insert 10 to be inserted into the liquid medicine to be sampled. At this time, the cylinder 3 is activated, and the output end of the cylinder 3 pulls the pull rod 5 upward, which in turn moves the first piston 6 and the second piston 7 upward. When the first piston 6 moves upward, a negative pressure will be formed in the inner cavity of the liquid medicine holding tube 4. At this time, the liquid medicine enters the feed tube 9 through the feed hole 11 and then flows into the feed tube 9 through the connecting pipe 8. The inner cavity of the holding tube 4, through the design of the limiting block 19, can conveniently block and limit the second piston 7, thereby controlling the amount of medicine sampled. Furthermore, the contact between the second piston 7 and the limiting block 19 can also block the medicine sampled in the holding tube 4, preventing backflow of the medicine and loss of the sampled medicine, thus reducing the amount of medicine sampled. After sampling is completed, the electric telescopic rod 12 is activated. The output end of the electric telescopic rod 12 will drive the L-shaped connecting rod 13 to move. The L-shaped connecting rod 13 is connected to the cleaning ring 14 through the rotating seat 17, thereby causing the cleaning ring 14 to slide downward on the outside of the feed tube 9 to clean the outside of the feed tube 9 and scrape off the residual medicine adhering to the outside of the feed tube 9, thus ensuring the cleanliness of the feed tube 9, which is quite practical.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sampling device for pharmaceutical testing, comprising a protective housing (1), characterized in that: An external frame (2) is fixedly connected to the upper end of the protective housing (1). A cylinder (3) is installed on the upper end of the external frame (2). A pull rod (5) is fixedly connected to the output end of the cylinder (3). A first piston (6) is fixedly connected to the outside of the pull rod (5). A liquid holding pipe (4) is provided on the outside of the first piston (6). The liquid holding pipe (4) is located on the inside of the external frame (2). A connecting pipe (8) is fixedly connected to the lower end of the liquid holding pipe (4). The connecting pipe (8) is located at the lower end of the protective housing (1). A feed pipe (9) is fixedly connected to the lower end of the connecting pipe (8). A cleaning component is provided on the outside of the feed pipe (9).

2. The sampling device for pharmaceutical inspection according to claim 1, characterized in that: The feed pipe (9) has multiple feed holes (11) on its outer side. The feed pipe (9) is slidably connected to a second piston (7). The second piston (7) is fixedly connected to the lower end of the pull rod (5). The upper end of the feed pipe (9) is fixedly connected to a limit block (19). The inner diameter of the limit block (19) is smaller than the outer diameter of the second piston (7).

3. The sampling device for pharmaceutical inspection according to claim 1, characterized in that: The cleaning assembly includes a cleaning ring (14), which is slidably connected to the outside of the feed pipe (9). Two rotating seats (17) are fixedly installed on the outside of the cleaning ring (14), and a drive assembly is rotatably connected to the inside of each of the two rotating seats (17).

4. A sampling device for pharmaceutical testing according to claim 3, characterized in that: The drive assembly includes an electric telescopic rod (12), which is fixedly installed on the inner side of the protective housing (1). An L-shaped connecting rod (13) is fixedly connected to the output end of the electric telescopic rod (12). The L-shaped connecting rod (13) is located at the lower end of the protective housing (1), and the other end of the L-shaped connecting rod (13) is rotatably connected to the inner side of the rotating seat (17).

5. A sampling device for pharmaceutical testing according to claim 4, characterized in that: The rotating seat (17) is fixedly connected to the inner side of the rotating shaft (18), and the L-shaped connecting rod (13) is provided with a through hole corresponding to the rotating shaft (18) on the outer side. The L-shaped connecting rod (13) is rotatably connected to the outer side of the rotating shaft (18) through the through hole.

6. A sampling device for pharmaceutical testing according to claim 3, characterized in that: Two sliders (15) are fixedly connected to the inner side of the cleaning ring (14), and two grooves (16) corresponding to the sliders (15) are opened on the outer side of the feed pipe (9). The sliders (15) are slidably connected to the inner side of the grooves (16).

7. The sampling device for pharmaceutical inspection according to claim 1, characterized in that: The lower end of the feed tube (9) is fixedly connected to an insert head (10), which is a conical design.

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