Liquid medicine experiment sampling equipment and sampling method thereof

Abstract

The invention discloses liquid medicine experiment sampling equipment and a sampling method thereof, and belongs to the field of liquid medicine experiments. Liquid medicine experiment sampling equipment comprises a sampler and a piston pad sliding on the inner wall of the sampler, the top of the piston pad is rotationally connected with a threaded rod through a bearing, the threaded rod is in threaded connection with the top of the sampler, and the bottom of the sampler is fixedly connected with a sampling head. The connecting sleeve is detachably connected to the surface of the sampling head, and a filter screen is attached between the connecting sleeve and the sampling head; the rotating mechanism rotates on the inner wall of the sampling head; components in liquid sampling can be uniformly distributed, the situation that the later-stage test quality is affected by too high or too low local concentration of liquid medicine components is avoided, meanwhile, mixing and stirring can be conducted synchronously during sampling, the problem that an independent driving source is needed for working is avoided, the manufacturing cost is further reduced, and the working efficiency is improved. Therefore, the consistency of the quality and the curative effect of each batch of liquid experiments is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of liquid medicine experiments, and in particular to a liquid medicine experiment sampling device. Background Art

[0002] In the fields of medicine, food, chemistry, etc., when pharmaceutical companies develop drugs, they need to use drug experiments to mix and test various ingredients. In order to ensure the safety and stability of sampling, they need to use corresponding sampling equipment for sampling.

[0003] At present, when sampling liquid medicines, a sampling tube is often used to insert into the liquid container of the liquid medicine for extraction. In this way, sampling can be successfully completed for pure liquid medicines, but the liquid inside the liquid container is precipitated for a long time, which can easily cause the local concentration of the liquid component to be too high or too low, affecting the quality of subsequent tests. At the same time, when there is drug residue in the drug solution, directly using the sampling tube to extract the drug solution will cause the drug residue to block the sampling hole, affecting the smooth progress of the drug solution sampling work. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the local concentration of liquid components is too high or too low, which affects the quality of later tests, and to propose a liquid medicine experiment sampling device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A liquid medicine experimental sampling device comprises a sampler and a piston pad sliding on the inner wall of the sampler, the top of the piston pad is rotatably connected to a threaded rod through a bearing, the threaded rod is threadedly connected to the top of the sampler, the bottom of the sampler is fixedly connected to a sampling head, and also comprises: a connecting sleeve detachably connected to the surface of the sampling head, a filter screen is attached between the connecting sleeve and the sampling head; a rotating mechanism rotating on the inner wall of the sampling head, the end of the rotating mechanism is attached just below the filter screen, the rotating mechanism comprises a connecting frame fixed to the inner wall of the sampling head, the surface of the connecting frame is rotatably connected to a driving shaft through a bearing, the end of the driving shaft penetrates the filter screen and is detachably connected to a cleaning stirring blade, the cleaning stirring blade is attached to the surface of the filter screen.

[0006] Preferably, the side wall of the sampler is provided with a driving mechanism, and the driving mechanism includes a mounting shell fixed on the side wall of the sampler, the interior of the mounting shell is rotatably connected to a connecting shaft through a bearing, the top of the connecting shaft is fixedly connected to a small gear plate, the surface of the small gear plate is meshingly connected to a large gear plate, the large gear plate is threadedly connected to the surface of the threaded rod, the surfaces of the mounting shell and the sampling head are rotatably connected to a linkage shaft through bearings, and the linkage shaft is respectively connected to the drive shaft and the end of the mounting shell through gears.

[0007] Preferably, the sampler and the mounting shell are provided with a mounting mechanism on their surfaces, the mounting mechanism comprising a sliding sleeve mounted on the sampler and the mounting shell surfaces, the bottom of the sliding sleeve is fixedly connected with a concave clamping plate, the surface of the concave clamping plate is threadedly connected with a limiting bolt.

[0008] Preferably, a support block is fixedly connected to the top of the sliding sleeve, an adjusting bolt is penetrated and connected to the support block, a plurality of threaded holes are opened on the surface of the mounting shell, and the adjusting bolt is threadedly connected to the inner wall of the threaded hole.

[0009] Preferably, a guide rod is fixedly connected to the interior of the driving shaft, a sliding plate is slidably connected to the surface of the guide rod, and a knocking rod is fixedly connected to the bottom of the sliding plate.

[0010] Preferably, the rotating mechanism further comprises a corrugated gasket fixed inside the sampling head, and the corrugated gasket is in contact with the bottom of the sliding plate.

[0011] Preferably, a return spring is sleeved on the surface of the guide rod, and ends of the return spring are respectively fixedly connected to the drive shaft and the sliding plate.

[0012] Preferably, an L-shaped annular groove is stuck inside the large gear plate, an L-shaped limit block is slidably connected inside the L-shaped annular groove, and the L-shaped limit block is fixedly connected to the top of the sampler.

[0013] Preferably, an observation slot is provided on the front side of the sampler, and glass is inlaid and installed inside the observation slot.

[0014] A liquid drug experimental sampling method mainly comprises the following steps: S1. Installation: The staff can first install the sampler above the liquid container, and place the sampling head at the bottom of the sampler inside the liquid container, so as to extend the sampling head into the liquid for later extraction; S2. Sampling: By rotating the threaded rod upward, the piston pad can be driven to slowly rise inside the sampler, thereby generating a negative pressure state inside the sampler, so that the liquid can be extracted for sampling. Under the setting of the filter net inside the connecting sleeve, the liquid Chinese medicine residue can be filtered to prevent the residue from entering the sampler and affecting the quality of subsequent detection. S3, mixing; during the liquid extraction process, the rotating mechanism can be driven synchronously, and the liquid inside the liquid container can be mixed by the driving of the rotating mechanism, and the precipitated drugs inside the liquid can be fully mixed, so as to ensure the quality of the sampled liquid. At the same time, under the driving of the rotating mechanism, the surface of the connecting sleeve can be scraped back and forth to avoid drug residues clogging inside the connecting sleeve and affecting the efficiency of liquid extraction. Compared with the prior art, the present invention provides a liquid medicine experimental sampling device, which has the following beneficial effects: 1. The liquid medicine experimental sampling equipment can mix and stir the liquid during the liquid sampling process through the cooperation between the rotating mechanism, the connecting frame, the driving shaft and the cleaning stirring blades. Through this setting, the components in the liquid sampling can be evenly distributed, avoiding the local concentration of the liquid components being too high or too low to affect the quality of the later test, thereby ensuring the consistency of the quality and efficacy of each batch of liquid experiments.

[0015] 2. The liquid medicine experimental sampling equipment can synchronously drive the driving shaft during the sampling process of the liquid medicine by installing the shell, connecting shaft, small gear plate, large gear plate and linkage shaft. Through this setting, simultaneous mixing and stirring can be achieved during sampling, avoiding the need for a separate driving source to work, and further reducing the manufacturing cost.

[0016] 3. The liquid medicine experimental sampling equipment can be installed on the side wall of the liquid container through the cooperation between the mounting mechanism, the sliding sleeve, the concave splint, and the limit bolt. By setting it in this way, it can be firmly fixed on the side wall of the liquid container, avoiding the problem of shaking caused by the staff holding it for a long time, and further improving the operability of sampling.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention realizes that the components in the liquid sampling can be evenly distributed, avoiding the local concentration of the liquid components being too high or too low affecting the quality of the subsequent tests. At the same time, mixing and stirring can be carried out synchronously during sampling, avoiding the need for a separate driving source to work, further reducing the manufacturing cost, thereby ensuring the consistency of the quality and efficacy of each batch of liquid experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a liquid medicine experimental sampling device proposed by the present invention; Figure 2 This is a schematic diagram of the cutaway structure of a liquid medicine experimental sampling device proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a rotating mechanism of a liquid medicine experimental sampling device proposed by the present invention; Figure 4 A schematic diagram of the structure of a corrugated gasket for a liquid medicine experimental sampling device proposed by the present invention; Figure 5 This is a front structural schematic diagram of a liquid medicine experimental sampling device proposed by the present invention; Figure 6A liquid medicine experimental sampling device proposed by the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the right side structure of a liquid medicine experimental sampling device proposed by the present invention; Figure 8 A liquid medicine experimental sampling device proposed by the present invention Figure 7 Enlarged structural diagram at B in the middle.

[0019] In the figure: 1. sampler; 11. piston pad; 12. threaded rod; 13. sampling head; 14. observation slot; 2. connecting sleeve; 21. filter screen; 3. rotating mechanism; 31. connecting frame; 32. driving shaft; 33. cleaning stirring blade; 34. guide rod; 35. sliding plate; 36. corrugated gasket; 37. knocking rod; 38. reset spring; 4. driving mechanism; 41. mounting shell; 42. connecting shaft; 43. small gear plate; 44. large gear plate; 441. L annular groove; 442. L limit block; 45. linkage shaft; 5. mounting mechanism; 51. sliding sleeve; 52. concave splint; 53. limit bolt; 54. support block; 55. adjusting bolt; 56. threaded hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In one embodiment, referring to Figure 1-Figure 8, a liquid medicine experimental sampling device, comprising a sampler 1, and a piston pad 11 sliding on the inner wall of the sampler 1, the top of the piston pad 11 is rotatably connected to a threaded rod 12 through a bearing, the threaded rod 12 is threadedly connected to the top of the sampler 1, and the bottom of the sampler 1 is fixedly connected to a sampling head 13, and also comprises: a connecting sleeve 2 detachably connected to the surface of the sampling head 13, a filter screen 21 is attached between the connecting sleeve 2 and the sampling head 13; a rotating mechanism 3 rotating on the inner wall of the sampling head 13, the end of the rotating mechanism 3 is attached to the filter screen 21 directly below, the rotating mechanism 3 comprises a connecting frame 31 fixed to the inner wall of the sampling head 13, the surface of the connecting frame 31 is rotatably connected to a driving shaft 32 through a bearing, the end of the driving shaft 32 penetrates the filter screen 21 and is detachably connected to a cleaning stirring blade 33, the cleaning stirring blade 33 is attached to the surface of the filter screen 21, and an observation slot 14 is provided on the front of the sampler 1, and glass is inlaid and installed inside the observation slot 14.

[0023] By adopting such a scheme, mixing and stirring can be performed during the liquid sampling process. Through this setting, the components in the liquid sampling can be evenly distributed, avoiding the local concentration of liquid components being too high or too low to affect the quality of subsequent tests, thereby ensuring the consistency of the quality and efficacy of each batch of liquid experiments.

[0024] During specific operation, the sampling head 13 at the bottom of the sampler 1 penetrates into the liquid, and then the threaded rod 12 is rotated and moved up and down, thereby driving the piston pad 11 to move upward inside the sampler 1, thereby generating negative pressure inside the sampler 1 to extract liquid, and the connecting sleeve 2 is installed at the end of the sampling head 13, and at the same time, the filter screen 21 is set between the connecting sleeve 2 and the sampling head 13 to filter the extracted liquid to prevent the drug residue from entering the sampler 1 and affecting the quality of later detection. Under the setting of the rotating mechanism 3, the rotation of the driving shaft 32 connected to the bearing of the connecting frame 31 can drive the cleaning and stirring The stirring blade 33 rotates, and the liquid can be mixed and stirred by the rotation of the cleaning stirring blade 33, so that the cost in the liquid can be evenly mixed, preventing the local concentration of the sampled liquid components from being too high or too low and affecting the quality of the subsequent tests. At the same time, the bottom of the filter screen 21 can be scraped and cleaned under the rotation of the cleaning stirring blade 33. By scraping and cleaning the bottom of the filter screen 21, the possibility of the filter screen 21 being blocked by the residue can be reduced. With the opening of the observation slot 14, it is convenient for the staff to check the sampled liquid inside the sampler 1, so that the different capacities of the sampled liquid can be accurately controlled.

[0025] In one embodiment, referring to Figure 2 , Figure 5 and Figure 6A liquid medicine experimental sampling device comprises a sampler 1, and a piston pad 11 sliding on the inner wall of the sampler 1, the top of the piston pad 11 is rotatably connected to a threaded rod 12 through a bearing, the threaded rod 12 is threadedly connected to the top of the sampler 1, and the bottom of the sampler 1 is fixedly connected to a sampling head 13, and also comprises: a connecting sleeve 2 detachably connected to the surface of the sampling head 13, a filter screen 21 is attached between the connecting sleeve 2 and the sampling head 13; a rotating mechanism 3 rotating on the inner wall of the sampling head 13, the end of the rotating mechanism 3 is attached directly below the filter screen 21, the rotating mechanism 3 comprises a connecting frame 31 fixed to the inner wall of the sampling head 13, the surface of the connecting frame 31 is rotatably connected to a driving shaft 32 through a bearing, the end of the driving shaft 32 penetrates the filter screen 21 and is detachably connected to a cleaning stirring blade 33, the cleaning stirring blade 33 is attached to the surface of the filter screen 21, and a driving mechanism 4 is provided on the side wall of the sampler 1. The driving mechanism 4 includes a mounting shell 41 fixed on the side wall of the sampler 1, and the interior of the mounting shell 41 is rotatably connected with a connecting shaft 42 through a bearing, and the top of the connecting shaft 42 is fixedly connected with a small gear plate 43, and the surface of the small gear plate 43 is meshed with a large gear plate 44, and the large gear plate 44 is threadedly connected to the surface of the threaded rod 12. The surfaces of the mounting shell 41 and the sampling head 13 are rotatably connected with a linkage shaft 45 through bearings, and the linkage shaft 45 is respectively connected to the drive shaft 32 and the end of the mounting shell 41 through gears, and the interior of the large gear plate 44 is stuck with an L annular groove 441, and the interior of the L annular groove 441 is slidably connected with an L limit block 442, and the L limit block 442 is fixedly connected to the top of the sampler 1.

[0026] With such a scheme, under the setting of the driving mechanism 4, when the threaded rod 12 rotates upward, it can synchronously drive the small gear plate 43 engaged with the large gear plate 44 to rotate, and the rotation of the small gear plate 43 can drive the connecting shaft 42 and the linkage shaft 45 to rotate in turn. Since the linkage shaft 45 is engaged with the end of the driving shaft 32 through gears, it can synchronously drive the driving shaft 32 to rotate. The synchronous rotation can provide a power source and reduce power loss at the same time.

[0027] During specific operation, when the threaded rod 12 rotates upward, the large gear plate 44 can be synchronously driven to rotate. With the opening of the L-annular groove 441 at the bottom of the large gear plate 44, the L limit block 442 is located inside the L-annular groove 441, which can limit the large gear plate 44 upward when it rotates. When the large gear plate 44 rotates, the small gear plate 43 engaged on the surface can be driven to rotate, and the connecting shaft 42 inside the mounting shell 41 can be driven to rotate through the small gear plate 43. When the connecting shaft 42 rotates, the linkage shaft 45 can be driven to rotate. Under the coordination of the gears, the power can be diverted to drive the drive shaft 32 to rotate, thereby providing a power source for the drive shaft 32. The gear ring ratios of the large gear plate 44 and the small gear plate 43 are different. When the large gear plate 44 rotates one circle, the small gear plate 43 can be rotated at least four to six times, so that the rotating mechanism 3 can be rotated under the differential ratio.

[0028] In addition, the side wall of the sampler 1 can be provided with a servo motor, through which the motor can be connected to the gear to drive the meshing large gear disk 44 to rotate, so that the sampling capacity can be automatically controlled, further reducing the manual fatigue intensity.

[0029] In one embodiment, referring to Figure 5 , Figure 7 and Figure 8 A liquid medicine experimental sampling device comprises a sampler 1, and a piston pad 11 sliding on the inner wall of the sampler 1, the top of the piston pad 11 is rotatably connected to a threaded rod 12 through a bearing, the threaded rod 12 is threadedly connected to the top of the sampler 1, and the bottom of the sampler 1 is fixedly connected to a sampling head 13, and further comprises: a connecting sleeve 2 detachably connected to the surface of the sampling head 13, a filter screen 21 is attached between the connecting sleeve 2 and the sampling head 13; a rotating mechanism 3 rotating on the inner wall of the sampling head 13, the end of the rotating mechanism 3 is attached directly below the filter screen 21, the rotating mechanism 3 comprises a connecting frame 31 fixed to the inner wall of the sampling head 13, the surface of the connecting frame 31 is rotatably connected to a driving mechanism 21 through a bearing The end of the driving shaft 32 passes through the filter 21 and is detachably connected with a cleaning stirring blade 33. The cleaning stirring blade 33 is attached to the surface of the filter 21. The surface of the sampler 1 and the mounting shell 41 is sleeved with a mounting mechanism 5. The mounting mechanism 5 includes a sliding sleeve 51 sleeved on the surface of the sampler 1 and the mounting shell 41. The bottom of the sliding sleeve 51 is fixedly connected with a concave clamping plate 52. The surface of the concave clamping plate 52 is threadedly connected with a limiting bolt 53. The top of the sliding sleeve 51 is fixedly connected with a support block 54. The support block 54 is penetrated and connected with an adjusting bolt 55. The surface of the mounting shell 41 is provided with a plurality of threaded holes 56. The adjusting bolt 55 is threadedly connected to the inner wall of the threaded hole 56.

[0030] By adopting such a scheme, under the setting of the installation mechanism 5, the sliding sleeve 51 can be installed on the side wall of the liquid container, and then rotated to contact the side wall of the liquid container through the limiting bolt 53, thereby realizing the overall installation of the sampler 1, thereby eliminating the need for the staff to hold the sampler 1 for a long time.

[0031] During specific operation, the sliding sleeve 51 is sleeved on the surface of the sampler 1 and the mounting shell 41. When the sampling head 13 at the end of the sampler 1 is located inside the liquid container, it can be clamped at the port of the liquid container through the concave clamping plate 52, and then the limiting bolt 53 passing through the side wall of the concave clamping plate 52 is rotated to make the limiting bolt 53 contact the side wall of the liquid container, so as to install the sampler 1 inside the liquid container. At this time, the staff can release the grip force on the surface of the sampler 1. By rotating the adjusting bolt 55 on the surface of the supporting block 54 at the top of the sliding sleeve 51, the adjusting bolt 55 and the threaded hole 56 can be separated, so that the upper and lower heights of the sampler 1 can be adjusted, thereby controlling the sampling head 13 at the end of the sampler 1 to penetrate into the liquid container at different depths, and then the adjusting bolt 55 is threadedly connected to the nearest threaded hole 56 to fix the sampler 1. By adjusting the sampler 1 at different heights, the accuracy of the capacity can be more accurately controlled when sampling the liquid.

[0032] In one embodiment, referring to Figure 2 , Figure 3 and Figure 4 A guide rod 34 is fixedly connected to the inside of the driving shaft 32, a sliding plate 35 is slidably connected to the surface of the guide rod 34, a knocking rod 37 is fixedly connected to the bottom of the sliding plate 35, the rotating mechanism 3 also includes a corrugated gasket 36 fixed to the inside of the sampling head 13, the corrugated gasket 36 is in contact with the bottom of the sliding plate 35, a return spring 38 is sleeved on the surface of the guide rod 34, and the ends of the return spring 38 are fixedly connected to the driving shaft 32 and the sliding plate 35 respectively.

[0033] By adopting such a scheme, the rotation of the driving shaft 32 can synchronously drive the knocking rod 37 to rotate synchronously. The rotation of the knocking rod 37 can knock on the top of the connecting sleeve 2 to generate vibration. The vibration generated by the knocking can more effectively remove the drug residue blocking the surface of the connecting sleeve 2.

[0034] During specific operation, the guide rod 34 is fixed inside the driving shaft 32. When the driving shaft 32 rotates, the sliding plate 35 sliding on the surface of the guide rod 34 can be synchronously driven to rotate synchronously, so that the top of the connecting sleeve 2 can be reciprocated and knocked. The sliding plate 35 is attached to the surface of the corrugated gasket 36, and can be reciprocated up and down along the corrugations of the corrugated gasket 36. The reciprocating up and down movement of the sliding plate 35 synchronously drives the knocking rod 37 to move, so that the knocking rod 37 is knocked to the top of the filter screen 21 to generate vibration, so that the drug residues blocked inside the filter screen 21 are easier to be vibrated and removed. At the same time, under the spring force of the reset spring 38, the sliding plate 35 can be automatically moved downward, so that the sliding plate 35 is quickly moved downward and knocked to the top of the filter screen 21. At the same time, with the rotation of the driving shaft 32, the top of the filter screen 21 can be evenly knocked, avoiding local knocking in place, and failing to better vibrate and drop the drug residues blocked in the filter screen 21.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid medicine experimental sampling device, comprising a sampler (1), and a piston pad (11) sliding on the inner wall of the sampler (1), the top of the piston pad (11) being rotatably connected to a threaded rod (12) via a bearing, the threaded rod (12) being threadedly connected to the top of the sampler (1), and the bottom of the sampler (1) being fixedly connected to a sampling head (13), characterized in that: Also includes: A connecting sleeve (2) detachably connected to the surface of the sampling head (13), wherein a filter screen (21) is attached between the connecting sleeve (2) and the sampling head (13); A rotating mechanism (3) rotates on the inner wall of the sampling head (13), the end of the rotating mechanism (3) being in contact with the filter screen (21) directly below the rotating mechanism (3), the rotating mechanism (3) comprising a connecting frame (31) fixed to the inner wall of the sampling head (13), the surface of the connecting frame (31) being rotatably connected to a driving shaft (32) via a bearing, the end of the driving shaft (32) passing through the filter screen (21) being detachably connected to a cleaning stirring blade (33), the cleaning stirring blade (33) being in contact with the surface of the filter screen (21).

2. A liquid medicine experimental sampling device according to claim 1, characterized in that: The side wall of the sampler (1) is provided with a driving mechanism (4), and the driving mechanism (4) comprises a mounting shell (41) fixed to the side wall of the sampler (1); the interior of the mounting shell (41) is rotatably connected to a connecting shaft (42) via a bearing; the top of the connecting shaft (42) is fixedly connected to a small gear plate (43); the surface of the small gear plate (43) is meshingly connected to a large gear plate (44); the large gear plate (44) is threadedly connected to the surface of the threaded rod (12); the surfaces of the mounting shell (41) and the sampling head (13) are rotatably connected to a linkage shaft (45) via a bearing; the linkage shaft (45) is respectively connected to the drive shaft (32) and the end of the mounting shell (41) via gears.

3. A liquid medicine experimental sampling device according to claim 1, characterized in that: The surfaces of the sampler (1) and the mounting shell (41) are sleeved with a mounting mechanism (5), the mounting mechanism (5) comprising a sliding sleeve (51) sleeved on the surfaces of the sampler (1) and the mounting shell (41), a concave clamping plate (52) being fixedly connected to the bottom of the sliding sleeve (51), and a limit bolt (53) being threadedly connected to the surface of the concave clamping plate (52).

4. A liquid medicine experimental sampling device according to claim 3, characterized in that: A support block (54) is fixedly connected to the top of the sliding sleeve (51), an adjusting bolt (55) is penetrated and connected to the support block (54), a plurality of threaded holes (56) are formed on the surface of the mounting housing (41), and the adjusting bolt (55) is threadedly connected to the inner wall of the threaded hole (56).

5. A liquid medicine experimental sampling device according to claim 1, characterized in that: A guide rod (34) is fixedly connected to the interior of the driving shaft (32), a sliding plate (35) is slidably connected to the surface of the guide rod (34), and a knocking rod (37) is fixedly connected to the bottom of the sliding plate (35).

6. A liquid medicine experimental sampling device according to claim 5, characterized in that: The rotating mechanism (3) further comprises a corrugated gasket (36) fixed inside the sampling head (13), wherein the corrugated gasket (36) is in contact with the bottom of the sliding plate (35).

7. A liquid medicine experimental sampling device according to claim 6, characterized in that: A return spring (38) is sleeved on the surface of the guide rod (34), and ends of the return spring (38) are respectively fixedly connected to the drive shaft (32) and the sliding plate (35).

8. A liquid medicine experimental sampling device according to claim 2, characterized in that: An L-shaped annular groove (441) is locked inside the large gear plate (44), an L-shaped limit block (442) is slidably connected inside the L-shaped annular groove (441), and the L-shaped limit block (442) is fixedly connected to the top of the sampler (1).

9. A liquid medicine experimental sampling device according to claim 1, characterized in that: An observation slot (14) is provided on the front of the sampler (1), and glass is inlaid and installed inside the observation slot (14).

10. A liquid drug experimental sampling method, comprising a liquid drug experimental sampling device according to claim 7, characterized in that: The main steps include: S1. Installation: The staff can first install the sampler (1) above the liquid container, and place the sampling head (13) at the bottom of the sampler (1) inside the liquid container, so as to extend the sampling head (13) into the liquid to facilitate the subsequent extraction work; S2, sampling; the threaded rod (12) is rotated upward to drive the piston pad (11) to slowly rise inside the sampler (1), thereby generating a negative pressure state inside the sampler (1), so that the liquid can be extracted for sampling. Under the setting of the filter net (21) inside the connecting sleeve (2), the liquid Chinese medicine residue can be filtered to prevent the residue from entering the sampler (1) and affecting the quality of subsequent detection; S3, mixed; During the process of extracting the liquid, the rotating mechanism (3) can be driven synchronously. Under the drive of the rotating mechanism (3), the liquid inside the liquid container can be mixed, and the precipitated medicine inside the liquid can be fully mixed, thereby ensuring the quality of the sampled liquid. At the same time, under the drive of the rotating mechanism (3), the surface of the connecting sleeve (2) can be scraped back and forth to avoid the clogging of the medicine residue inside the connecting sleeve (2) and affecting the efficiency of the liquid extraction work.

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