A bacteria sampling device for preventive medicine

Abstract

The application discloses a kind of including sampling box and multiple sampling tubes arranged in the inside of the sampling box;The bottom of the sampling box is fixedly provided with the support seat with U-shaped section, the top plate and the bottom plate of the sampling box are respectively provided with corresponding access pipe hole and abutting hole, the abutting hole is slidably provided with the top rod, and the lower end of the top rod is fixedly connected with the telescopic end of the ejection cylinder fixedly arranged at the bottom of the sampling box;Two mounting plates are fixedly arranged symmetrically outside the side of the sampling box close to the access pipe hole, two limiting sliding rods are fixedly arranged symmetrically between the two mounting plates, and a swab cutting mechanism and a sampling tube dismounting mechanism are slidably arranged on the two limiting sliding rods.In the process of sampling bacteria, the application can automatically complete the cutting of the swab after sampling, the automatic dismounting and tightening operation of the cap of the sampling tube, thereby reducing the human operation content and improving the sampling efficiency.

Description

Technical Field

[0001] This invention relates to the field of preventive medicine pathogen sampling technology, and in particular to a pathogen sampling device for preventive medicine. Background Technology

[0002] In the fields of preventive medicine, public health, and clinical diagnostics, sampling and monitoring of pathogenic microorganisms (including bacteria, viruses, fungi, etc., hereinafter referred to as "pathogens") in the environment and on object surfaces are crucial for timely detection of sources of infection, assessment of disinfection effectiveness, and prevention and control of disease transmission. Efficient and reliable sampling devices are the fundamental tools for accomplishing this task.

[0003] Currently, common methods for pathogen sampling include cotton swab sampling, imprinting, air sampling, and liquid rinsing. Among these, cotton swab sampling is the most widely used due to its simplicity and low cost. However, existing cotton swab sampling devices have several inherent drawbacks: the traditional cotton swab sampling process typically requires multiple independent steps: medical personnel take a sample using a swab, open the cap of the sampling tube, insert the sampled swab into the tube and break it along the tube wall at the break point, and finally tighten the cap to complete the sampling. This sampling process is cumbersome, not only reducing sampling efficiency but also easily leading to inconsistent sample quality due to improper operation. When manually breaking the swab, the preservation solution in the sampling tube is prone to spillage. Furthermore, there is a high risk of direct contact with the sample during the process of unscrewing or closing the cap, posing a potential biosafety threat to the sampling personnel. Summary of the Invention

[0004] The purpose of this invention is to provide a pathogen sampling device for preventive medicine, thereby solving the technical problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This invention discloses a pathogen sampling device for preventive medicine, comprising a sampling box and a plurality of sampling tubes disposed inside the sampling box; a U-shaped support base is fixedly disposed at the bottom of the sampling box; two drive wheels are rotatably disposed at both ends of the sampling box; a transfer drive motor for driving one of the drive wheels is fixedly disposed on the top plate of the sampling box; a drive belt is disposed between the two drive wheels; a plurality of mounting sleeves are fixedly disposed at even intervals on the outer side of the drive belt; and the plurality of sampling tubes are slidably inserted into each of the mounting sleeves. The top and bottom plates are respectively provided with corresponding inlet / outlet pipe holes and abutment holes. A push rod is slidably installed in the abutment hole. The lower end of the push rod is fixedly connected to the telescopic end of the ejection cylinder fixedly installed at the bottom of the sampling box. Two mounting plates are symmetrically fixedly installed on the outside of the sampling box near the inlet / outlet pipe holes. Two limiting slide rods are symmetrically fixedly installed between the two mounting plates. A swab cutting mechanism and a sampling tube disassembly / assembly mechanism are slidably installed on the two limiting slide rods. An adjustment mechanism for adjusting the position of the swab cutting mechanism and the sampling tube disassembly / assembly mechanism is provided between the two mounting plates.

[0007] Furthermore, each of the sampling tubes includes a tube body inserted into the mounting sleeve, and the upper end of each tube body has an open structure and is provided with a tube cap. The inner peripheral wall of the tube cap is connected to the upper outer peripheral wall of the tube body by a threaded connection.

[0008] Furthermore, a limiting flange is fixedly provided on the outer peripheral wall of the tube body below the tube cover. The outer diameter of the limiting flange is larger than the inner diameter of the mounting sleeve and smaller than the inner diameter of the inlet / outlet pipe hole.

[0009] Furthermore, two clamping cylinders are fixedly installed on the top plate of the sampling box on opposite sides of the inlet and outlet pipe holes, and pipe clamping blocks are fixedly installed on the extension and retraction ends of the two clamping cylinders respectively.

[0010] Furthermore, the swab cutting mechanism includes a first translation seat slidably disposed on the two limiting slide rods. A first bracket with an L-shaped cross-section is fixedly disposed on the upper part of the first translation seat. The horizontal part of the first bracket extends to the upper part of the sampling box and has a vertical swab passage hole. A cutter assembly is disposed on the horizontal part of the first bracket at a position corresponding to the swab passage hole.

[0011] Furthermore, the horizontal portion of the first bracket is provided with a cutter groove that passes through the swab passage hole in the horizontal direction. The cutter assembly includes a cutter that is slidably disposed in the cutter groove and two symmetrically fixed cutting cylinders that are fixedly disposed on the outside of the first bracket. The telescopic ends of the two cutting cylinders are respectively fixedly connected to a connecting plate fixedly disposed on the side end of the cutter.

[0012] Furthermore, the sampling tube assembly / disassembly mechanism includes a second translation seat slidably mounted on the two limiting slide rods. A second bracket with an F-shaped cross-section is fixedly mounted on the upper part of the second translation seat. A vertical guide rail is fixedly mounted on the side of the vertical part of the second bracket facing the sampling box. A lifting platform is slidably mounted between the two horizontal parts of the second bracket. A lifting drive assembly for driving the lifting platform to slide linearly in the vertical direction is provided on the second bracket. A slider that slides and limits with the guide rail is fixedly mounted on one end of the lifting platform. A tube cap screwing assembly is provided on the other end of the lifting platform.

[0013] Furthermore, the lifting drive assembly includes a vertical screw rotatably disposed between two horizontal portions of the second bracket, a lifting drive motor for driving the vertical screw to rotate is fixedly disposed on the top of the second bracket, and a threaded through hole adapted to the vertical screw is provided on the lifting platform.

[0014] Furthermore, the cap screwing assembly includes a cap screwing drive motor fixedly mounted on the upper part of the lifting platform. The drive shaft of the cap screwing drive motor is connected to a rotary table rotatably mounted on the lower part of the lifting platform. A vertical cap screwing cylinder is fixedly mounted at the bottom of the rotary table. Multiple first connecting ears are evenly fixedly mounted circumferentially on the outer peripheral wall of the main body of the cap screwing cylinder. A drive seat is fixedly mounted on the telescopic end of the cap screwing cylinder. A pair of second connecting ears are fixedly mounted on the outer peripheral wall of the drive seat at positions corresponding to each of the first connecting ears. The two second connecting ears of each pair are respectively hinged to one end of a connecting arm. A cap clamping block is fixedly mounted on the other end of each connecting arm. The two sides of the middle part of each connecting arm are respectively hinged to one end of two connecting rods. The other ends of the two connecting rods hinged to the same connecting arm are respectively hinged to the corresponding first connecting ears.

[0015] Furthermore, the adjustment mechanism includes a horizontal screw rotatably disposed between the two mounting plates, and an adjustment drive motor for driving the horizontal screw to rotate is fixedly disposed on the outer side of one of the mounting plates. Both the first translation seat and the second translation seat are provided with horizontal threaded through holes that are adapted to the horizontal screw.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] The sampling box in the preventive medicine germ sampling device disclosed in this invention can sequentially transport multiple sampling tubes stored inside. The external part of the sampling tube is equipped with a swab cutting mechanism and a sampling tube disassembly and assembly mechanism. During the germ sampling process, the cutting of the swab after sampling and the automatic disassembly and tightening of the tube cap can be automatically completed, thereby reducing the amount of manual operation and improving the efficiency of sampling work. In particular, it avoids the risk of direct contact with the sample during the process of unscrewing or closing the tube cap, effectively improving the safety of sampling personnel. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the working state when the sampling swab is cut according to the present invention;

[0020] Figure 2 This is a schematic diagram of the working state when the sampling tube cap of the present invention is screwed on;

[0021] Figure 3 This is a schematic diagram of the internal structure of the sampling box of the present invention;

[0022] Figure 4 This is a schematic diagram of the top plate structure of the sampling box of the present invention;

[0023] Figure 5 This is a schematic diagram of the sampling tube structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the swab cutting mechanism of the present invention;

[0025] Figure 7 This is a schematic diagram of the sampling tube assembly / disassembly mechanism of the present invention;

[0026] Explanation of reference numerals in the attached drawings: 1. Sampling box; 1-1. Inlet / outlet port; 1-2. Top hole; 2. Sampling tube; 2-1. Tube body; 2-2. Tube cap; 2-3. Limiting flange; 3. Support base; 4. Transmission wheel; 5. Transfer drive motor; 6. Transmission belt; 7. Mounting sleeve; 8. Top rod; 9. Top ejection cylinder; 10. Clamping cylinder; 11. Tube body clamping block; 12. Mounting plate; 13. Limiting slide rod; 14. First translation seat; 15. First bracket; 15-1. Swab passage hole; 15-2. 16. Cutter slide; 17. Cutter; 18. Cutting cylinder; 19. Connecting plate; 20. Second translation seat; 21. Second bracket; 22. Guide rail; 23. Lifting platform; 24. Slider; 25. Vertical screw; 26. Lifting drive motor; 27. Capping drive motor; 28. Rotary table; 29. ​​Capping cylinder; 30. First connecting ear; 31. Drive seat; 32. Second connecting ear; 33. Connecting arm; 34. Pipe cap clamping block; 35. Connecting rod; 36. Horizontal screw; 37. Positioning drive motor. Detailed Implementation

[0027] like Figures 1-7 As shown, a pathogen sampling device for preventive medicine includes a sampling box 1 and a plurality of sampling tubes 2 disposed inside the sampling box 1. A support base 3 with a U-shaped cross-section is fixedly disposed at the bottom of the sampling box 1.

[0028] Two drive wheels 4 are rotatably mounted at both ends inside the sampling box 1. A transfer drive motor 5 for driving one of the drive wheels 4 to rotate is fixedly mounted on the top plate of the sampling box 1. A drive belt 6 is installed between the two drive wheels 4. When the transfer drive motor 5 drives the corresponding drive wheel 4 to rotate, the drive belt 6 can reciprocate. Multiple vertical mounting sleeves 7 are fixedly connected at even intervals on the outer side of the drive belt 6. Multiple sampling tubes 2 are slidably inserted into each of the mounting sleeves 7.

[0029] The top and bottom plates of the sampling box 1 are respectively provided with corresponding inlet / outlet pipe holes 1-1 and push-out holes 1-2. The inlet / outlet pipe holes 1-1 are used for placing and pushing out the sampling tube 2 inside the sampling box 1. A push rod 8 is slidably installed in the push-out hole 1-2, and the lower end of the push rod 8 is fixedly connected to the telescopic end of the push-out cylinder 9 fixedly installed at the bottom of the sampling box 1.

[0030] In this embodiment, each sampling tube 2 includes a tube body 2-1 inserted into the mounting sleeve 7. The upper end of each tube body 2-1 is open and equipped with a matching tube cap 2-2. The inner peripheral wall of the tube cap 2-2 is connected to the upper outer peripheral wall of the tube body 2-1 by a threaded connection. A limiting flange 2-3 is fixedly provided on the outer peripheral wall of the tube body 2-1 below the tube cap 2-2. The limiting flange 2-3 and the tube body 2-1 are integrally formed. The outer diameter of the limiting flange 2-3 is larger than the inner diameter of the mounting sleeve 7 and smaller than the inner diameter of the inlet / outlet hole 1-1.

[0031] On the top plate of the sampling box 1, two horizontal clamping cylinders 10 are fixedly installed opposite each other on both sides of the inlet and outlet pipe holes 1-1. The extension and retraction ends of the two clamping cylinders 10 are respectively fixedly installed with pipe clamping blocks 11.

[0032] Two mounting plates 12 are symmetrically fixed on the outside of the sampling box 1 near the inlet / outlet port 1-1. Two horizontal limiting slide rods 13 are symmetrically fixed between the two mounting plates 12. A swab cutting mechanism and a sampling tube disassembly / assembly mechanism are slidably mounted on the two limiting slide rods 13. An adjustment mechanism for adjusting the position of the swab cutting mechanism and the sampling tube disassembly / assembly mechanism is provided between the two mounting plates 12.

[0033] In this embodiment, the swab cutting mechanism includes a first translation seat 14 slidably mounted on the two limiting slide rods 13. A first bracket 15 with an L-shaped cross-section is fixedly mounted on the upper part of the first translation seat 14. The lower end of the first bracket 15 is fixedly connected to the upper part of the first translation seat 14. The horizontal part of the first bracket 15 extends above the sampling box 1 and has a vertical swab passage hole 15-1 at a position flush with the inlet / outlet tube hole 12. A cutter assembly is mounted on the horizontal part of the first bracket 15 at a position corresponding to the swab passage hole 15-1.

[0034] Specifically: The horizontal part of the first bracket 15 is provided with a cutter groove 15-2 that passes through the swab passage hole 15-1 in the horizontal direction. The cutter assembly includes a cutter 16 that is slidably installed in the cutter groove 15-2 and two symmetrically fixedly installed on the outside of the first bracket 15. The telescopic ends of the two cutter cylinders 17 are respectively fixedly connected to the connecting plate 18 fixedly installed on the side of the cutter 16. When the cutter cylinders 17 telescopically move, the cutter 16 slides in the cutter groove 15-2.

[0035] In this embodiment, the sampling tube disassembly and assembly mechanism includes a second translation seat 19 slidably mounted on two limiting slide rods 13. A second bracket 20 with an F-shaped cross-section is fixedly mounted on the upper part of the second translation seat 19. A vertical guide rail 21 is fixedly mounted on the vertical part of the second bracket 20 facing the sampling box 1. A lifting platform 22 is slidably arranged between the two horizontal parts of the second bracket 20. A lifting drive assembly for driving the lifting platform 20 to slide linearly in the vertical direction is provided on the second bracket 20. A slider 23 that slides and limits with the guide rail 21 is fixedly mounted on one end of the lifting platform 22. A tube cap screwing assembly is provided on the other end of the lifting platform 22.

[0036] The lifting drive assembly includes a vertical screw 24 rotatably mounted between two horizontal parts of the second bracket 20. A lifting drive motor 25 for driving the vertical screw 24 to rotate is fixedly mounted on the top of the second bracket 20. A threaded through hole adapted to the vertical screw 24 is provided on the lifting platform 22.

[0037] The cap screwing assembly includes a cap screwing drive motor 26 fixedly installed on the upper part of the lifting platform 22. The drive shaft of the cap screwing drive motor 26 is connected to a rotary table 27 rotatably installed on the lower part of the lifting platform 22. A vertical cap screwing cylinder 28 is fixedly installed at the bottom of the rotary table 27. A plurality of first connecting ears 29 are evenly fixedly arranged circumferentially on the outer peripheral wall of the main body of the cap screwing cylinder 28. A drive seat 30 is fixedly installed at the telescopic end of the cap screwing cylinder 29. A pair of second connecting ears 31 are fixedly arranged on the outer peripheral wall of the drive seat 30 at positions corresponding to each of the first connecting ears 29. The two second connecting ears 31 in each pair are respectively hinged to one end of a connecting arm 32. A cap clamping block 33 is fixedly arranged at the other end of each connecting arm 32. The two sides of the middle part of each connecting arm 32 are respectively hinged to one end of two connecting rods 34. The other ends of the two connecting rods 34 hinged to the same connecting arm 32 are respectively hinged to the corresponding first connecting ear 29.

[0038] In this embodiment, the adjustment mechanism includes a horizontal screw 35 rotatably mounted between the two mounting plates 12, and an adjustment drive motor 36 for driving the horizontal screw 35 to rotate is fixedly mounted on the outer side of one of the mounting plates 12. The first translation seat 14 and the second translation seat 19 are both provided with horizontal threaded through holes that are adapted to the horizontal screw 35.

[0039] The specific working method of this invention is as follows:

[0040] During the process of medical staff using cotton swabs to collect germs, the ejector cylinder 9 in this sampling device extends, causing the ejector rod 8 to move upwards. As the ejector rod 8 moves upwards, it gradually pushes the sampling tube 2, which is directly opposite it, outwards to above the inlet / outlet port 1-1. After reaching the set extension distance, the ejector cylinder 9 stops moving, and the two clamping cylinders 10 extend in opposite directions, clamping and fixing the tube body 2-1 of the sampling tube 2 together through the two tube clamping blocks 11. During this process, the positions of the swab cutting mechanism and the sampling tube assembly / disassembly mechanism are as follows... Figure 2 As shown, at this time, the second bracket 20 of the sampling tube disassembly and assembly mechanism corresponds to the position of the inlet / outlet tube hole 1-1. When the sampling tube 2 is pushed out and clamped, the lifting drive motor 25 drives the lifting platform 22 to move downward through the vertical screw 24. When the multiple tube cap clamping blocks 33 of the tube cap screwing assembly correspond to the position of the pushed-out sampling tube 2, the cap screwing cylinder 28 retracts. Under the transmission action of multiple connecting arms 32 and connecting rods 34, the multiple tube cap clamping blocks 33 clamp the tube cap of the sampling tube 2 together. Then, the cap screwing drive motor 26 drives the rotating platform 27 to rotate. At the same time, the lifting drive motor 25 rotates in the opposite direction to make the lifting platform 22 move upward, automatically completing the automatic cap removal operation of the sampling tube 2. After the tube cap 2-2 of the sampling tube 2 is removed, the adjustment drive motor 36 drives the first translation seat 14 and the second translation seat 19 to move synchronously in a straight line through the horizontal screw 35. Figure 1 As shown in the diagram, the position of the swab passage hole 15-1 of the first bracket 15 of the swab cutting mechanism corresponds to the position of the inlet / outlet tube hole 1-1.

[0041] After medical staff complete the bacterial sampling using a cotton swab, they insert the sampled swab into the swab passage hole 15-1 on the first support 15 from top to bottom. Once the swab head passes through the swab passage hole 15-1 and enters the body 2-1 of the ejected sampling tube 2, the extension action of the two cutting cylinders 17 causes the cutter to automatically cut the swab. The swab head is then automatically dropped into the sampling tube 2. Medical staff can then discard the remaining upper part of the swab into the waste collection bin and use a new swab for the next sampling.

[0042] After the cotton swab is cut, the adjustment drive motor rotates in direction 36, causing the first translation seat 14 and the second translation seat 19 to return to their linear motion. Figure 2In the indicated state, the second bracket 20 of the sampling tube assembly / disassembly mechanism corresponds to the position of the inlet / outlet port 1-1. The lifting drive motor 25 again drives the lifting platform 22 downward via the vertical screw 24. When the multiple cap clamping blocks 33 holding the cap 2-2 of the sampling tube 2 approach the upper end of the sampling tube 2, the cap drive motor 26 drives the rotating platform 27 to rotate in the opposite direction. At the same time, the lifting drive motor 25 continues to drive the lifting platform 22 downward, so that the cap screwing assembly gradually screws the clamped cap 2-2 onto the tube body of the sampling tube 2. Afterward, the cap screwing cylinder 28 extends, and under the transmission action of multiple connecting arms 32 and connecting rods 34, the multiple cap clamping blocks 33 release their clamping action on the sampling tube cap 2-2.

[0043] Then, the two clamping cylinders 10 and the ejection cylinder 9 retract and reset, causing the sampling tube 2 with the swab to fall back into its corresponding mounting sleeve 7 after sampling is completed. The transfer drive motor 5 starts, causing the transmission belt 6 to drive all the sampling tubes 2 to run synchronously. When the subsequent sampling tube 2 is aligned with the inlet and outlet tube holes 1-1, the above series of actions are repeated to complete the batch sampling operation.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A pathogen sampling device for preventive medicine, characterized in that: The sampling device includes a sampling box and multiple sampling tubes disposed inside the sampling box. A U-shaped support base is fixedly mounted at the bottom of the sampling box. Two drive wheels are rotatably mounted at each end of the sampling box's interior. A transfer drive motor for driving one of the drive wheels is fixedly mounted on the top plate of the sampling box. A drive belt is provided between the two drive wheels. Multiple mounting sleeves are fixedly mounted at even intervals on the outer side of the drive belt. Multiple sampling tubes are slidably inserted into each of the mounting sleeves. The top and bottom plates of the sampling box... The sampling box has corresponding inlet / outlet holes and abutment holes. A push rod is slidably installed in the abutment hole, and the lower end of the push rod is fixedly connected to the telescopic end of the ejection cylinder fixedly installed at the bottom of the sampling box. Two mounting plates are symmetrically fixedly installed on the outside of the sampling box near the inlet / outlet holes. Two limiting slide rods are symmetrically fixedly installed between the two mounting plates. A swab cutting mechanism and a sampling tube disassembly / assembly mechanism are slidably installed on the two limiting slide rods. An adjustment mechanism for adjusting the position of the swab cutting mechanism and the sampling tube disassembly / assembly mechanism is provided between the two mounting plates.

2. The preventive medicine pathogen sampling device according to claim 1, characterized in that: Each of the sampling tubes includes a tube body inserted into the mounting sleeve. The upper end of each tube body is an open structure and is provided with a tube cap. The inner peripheral wall of the tube cap is connected to the upper outer peripheral wall of the tube body by a threaded connection.

3. The preventive medicine pathogen sampling device according to claim 2, characterized in that: The outer peripheral wall of the tube body is fixedly provided with a limiting flange below the tube cover. The outer diameter of the limiting flange is larger than the inner diameter of the mounting sleeve and smaller than the inner diameter of the inlet and outlet tube hole.

4. The preventive medicine pathogen sampling device according to claim 2, characterized in that: Two clamping cylinders are fixedly installed on the top plate of the sampling box on both sides of the inlet and outlet pipe holes, and pipe clamping blocks are fixedly installed on the extension and retraction ends of the two clamping cylinders respectively.

5. The preventive medicine pathogen sampling device according to claim 2, characterized in that: The swab cutting mechanism includes a first translation seat slidably mounted on the two limiting slide rods. The upper part of the first translation seat is fixedly mounted with a first bracket with an L-shaped cross section. The horizontal part of the first bracket extends to the upper part of the sampling box and has a vertical swab passage hole. A cutter assembly is provided on the horizontal part of the first bracket at a position corresponding to the swab passage hole.

6. The preventive medicine pathogen sampling device according to claim 5, characterized in that: The first bracket has a horizontal section with a cutter groove that passes through the swab passage hole. The cutter assembly includes a cutter that is slidably disposed in the cutter groove and two symmetrically fixed cutting cylinders that are fixedly disposed on the outside of the first bracket. The telescopic ends of the two cutting cylinders are respectively fixedly connected to a connecting plate fixedly disposed on the side of the cutter.

7. The preventive medicine pathogen sampling device according to claim 5, characterized in that: The sampling tube assembly / disassembly mechanism includes a second translation seat slidably mounted on two limiting slide rods. A second bracket with an F-shaped cross-section is fixedly mounted on the upper part of the second translation seat. A vertical guide rail is fixedly mounted on the side of the vertical part of the second bracket facing the sampling box. A lifting platform is slidably mounted between the two horizontal parts of the second bracket. A lifting drive assembly for driving the lifting platform to slide linearly in the vertical direction is mounted on the second bracket. A slider that slides and limits the guide rail is fixedly mounted on one end of the lifting platform. A tube cap screwing assembly is mounted on the other end of the lifting platform.

8. The preventive medicine pathogen sampling device according to claim 7, characterized in that: The lifting drive assembly includes a vertical screw rotatably disposed between two horizontal parts of the second bracket. A lifting drive motor for driving the vertical screw to rotate is fixedly disposed on the top of the second bracket. A threaded through hole adapted to the vertical screw is provided on the lifting platform.

9. The preventive medicine pathogen sampling device according to claim 7, characterized in that: The cap screwing assembly includes a cap screwing drive motor fixedly mounted on the upper part of the lifting platform. The drive shaft of the cap screwing drive motor is connected to a rotary table rotatably mounted on the lower part of the lifting platform. A vertical cap screwing cylinder is fixedly mounted at the bottom of the rotary table. Multiple first connecting ears are evenly fixedly mounted circumferentially on the outer peripheral wall of the main body of the cap screwing cylinder. A drive seat is fixedly mounted on the telescopic end of the cap screwing cylinder. A pair of second connecting ears are fixedly mounted on the outer peripheral wall of the drive seat at positions corresponding to each of the first connecting ears. The two second connecting ears in each pair are respectively hinged to one end of a connecting arm. A cap clamping block is fixedly mounted on the other end of each connecting arm. The two sides of the middle part of each connecting arm are respectively hinged to one end of two connecting rods. The other ends of the two connecting rods hinged to the same connecting arm are respectively hinged to the corresponding first connecting ears.

10. The preventive medicine pathogen sampling device according to claim 7, characterized in that: The adjustment mechanism includes a horizontal screw rotatably disposed between the two mounting plates. An adjustment drive motor for driving the horizontal screw to rotate is fixedly disposed on the outer side of one of the mounting plates. Both the first translation seat and the second translation seat have horizontal threaded through holes adapted to the horizontal screw.

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