A fully automatic sample detection device

Abstract

The application discloses a full-automatic stool sample detection device, which comprises a bottom plate, a first guide device, a second guide device, a sampling device, a support, a third guide device and a detection mechanism, a sampling hole is formed in the middle of the top surface of the bottom plate, the first guide device is installed on the top surface of the bottom plate, the second guide device can move along the length direction of the first guide device, the sampling device can move along the length direction of the second guide device, the support is installed on one side of the first guide device, a containing groove for containing a sampling stick is arranged on the end of the support close to the sampling device, the reagent box seat can move along the length direction of the third guide device, and the detection mechanism is installed on the side surface of the support away from the sampling device. The application can be installed at the water tank position of a toilet bowl, can replace manual sampling and detection of stool samples, and can also be used as an independent mechanism.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a fully automated stool sample testing device. Background Technology

[0002] With people increasingly focusing on their health, stool is an important indicator of physical condition. Various fully and semi-automatic stool analysis and testing instruments have emerged. However, traditional stool analysis instruments only detect the reaction of stool samples. Obtaining a stool sample still requires the person being tested to collect it from the toilet, seal it, and then deliver it to the testing room where personnel seal it again and transfer it to the relevant testing instrument. The entire process is cumbersome, inconvenient, unhygienic, and unsafe. It also generates odors and aerosols, and stool samples from individuals with infectious diseases pose a risk of transmission, putting close contacts at risk of infection. Furthermore, the entire process is tedious and complex, making it difficult for elderly or seriously ill individuals with mobility issues to complete independently, causing significant inconvenience.

[0003] Therefore, those skilled in the art have provided a fully automated stool sample testing device to solve the problems mentioned in the background art. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic stool sample testing device that can be installed in the toilet tank to replace manual sampling and testing of stool samples, and can also be used as an independent unit.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention discloses a fully automated stool sample testing device, comprising:

[0007] A base plate, wherein a sampling hole is provided in the center of the top surface of the base plate;

[0008] A first guide device is mounted on the top surface of the base plate;

[0009] A second guide device is mounted on the first guide device and is capable of moving along the length of the first guide device;

[0010] A sampling device, which is mounted on a second guide device and is movable along the length of the second guide device;

[0011] A bracket is installed on one side of the first guide device and disposed on the top surface of the base plate. The bracket has a receiving groove for accommodating the sampling rod at the end near the sampling device.

[0012] The third guide device is mounted on the side of the bracket near the sampling device. A reagent kit holder is mounted on the end of the third guide device near the sampling device. The reagent kit holder can move along the length of the third guide device. A reagent kit push rod is mounted on the end of the bracket away from the reagent kit holder. A through hole is provided on the side of the reagent kit holder near the reagent kit push rod. The reagent kit push rod can extend into the through hole.

[0013] The testing mechanism is mounted on the side of the bracket away from the sampling device;

[0014] The detection mechanism includes two puncture mechanisms, both of which are mounted on the side of the bracket away from the sampling device, and each puncture mechanism is connected to a corresponding peristaltic pump.

[0015] Furthermore, the piercing mechanism includes:

[0016] The first piercing rod, the power input end of the first piercing rod is connected to the output end of the first motor;

[0017] The second piercing rod is installed below the first piercing rod, and the power input end of the second piercing rod is connected to the output end of the second motor;

[0018] A piercing rod mounting bracket is provided, on which both the first and second piercing rods are mounted. Both the first and second piercing rods are also connected to a peristaltic pump. The piercing rod mounting bracket is mounted on the support.

[0019] Furthermore, a camera bracket is mounted on the base plate. The camera bracket is positioned close to the sampling device and installed between the peristaltic pump and the bracket. A camera is mounted on the camera bracket.

[0020] Furthermore, a sampling rod unlocking push rod is installed on the end of the bracket near the camera bracket, and the sampling rod unlocking push rod is connected to the third motor.

[0021] Furthermore, the third guiding device includes two first guide rails, which are respectively installed at the top and bottom of the bracket. Each of the two first guide rails is provided with a first slider that can move along its length. The first slider away from the bottom plate is connected to a first lead screw. The rotation of the first lead screw drives the first slider to move along the corresponding first guide rail. The first lead screw is driven to rotate by a seventh motor. The first lead screw and the seventh motor are installed on the bracket. The reagent holder is installed on the two first sliders.

[0022] Furthermore, a first sensor, a second sensor, a third sensor, a fourth sensor, and a fifth sensor are sequentially installed on the end of the bracket away from the base plate, with the first sensor positioned near the sampling rod unlocking push rod.

[0023] Furthermore, a drop groove is installed on the top surface of the base plate, the drop groove is located below the first guide rail, the discharge end of the drop groove passes through the base plate and is set near the end of the base plate; the discharge end of the drop groove is set near the peristaltic pump.

[0024] Furthermore, the sampling device includes:

[0025] A sampling module mounting base, which is movable along the length direction of the second guide device.

[0026] The second guide rail, the bottom end of which is mounted on the sampling module mounting base via the first fixing member;

[0027] The second slider is movable along the length of the second guide rail. A sampling rod gripper is mounted on the second slider. The sampling rod gripper is driven by a fourth motor, which is mounted on the second slider.

[0028] The second lead screw is installed on the outside of the second guide rail. The rotation of the second lead screw drives the second slider to move on the second guide rail.

[0029] Furthermore, the second guiding device includes a third guide rail, the bottom surfaces of both ends of the third guide rail being connected to a third slider via second fixing members, the third slider being able to move along the length direction of the first guiding device; a third lead screw is mounted on the side of the third guide rail away from the bracket, the third lead screw being driven by a fifth motor, the fifth motor being mounted on the end of the third guide rail away from the second guide rail, a fourth slider is mounted on the third lead screw, the fourth slider driving the sampling module fixing seat to move along the length direction of the third guide rail.

[0030] Furthermore, the first guiding device includes two fifth guide rails, which are respectively installed on both sides of the sampling hole. Two third sliders move along the length of the two fifth guide rails. A fourth lead screw is installed on the inner side of one of the fifth guide rails. The fourth lead screw drives the corresponding third slider to move on the fifth guide rail through a sixth motor.

[0031] In the above technical solution, the fully automatic stool sample detection device provided by the present invention has the following advantages:

[0032] Compared with existing technologies, the fully automated stool sample detection device designed in this invention has the following advantages:

[0033] 1. The device of this application can be installed above the toilet or used alone.

[0034] 2. This application is capable of moving to a predetermined location to collect stool samples.

[0035] 3. After the sampling stick extracts the sample, the device of this application, under the control of the controller, delivers the sample into the test strip box in the reagent kit holder to complete the detection action and provide the results.

[0036] 4. This device replaces the test strip packaging card for each test, avoiding the risk of cross-infection, ensuring the accuracy of the results, and is suitable for public testing sites.

[0037] 6. The device of this application can be controlled by a controller to realize automatic stool sample detection and post-detection sample removal, replacing manual labor and eliminating the impact of foul odors, viruses, etc. on personnel during sampling. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0039] Figure 1 This is a schematic diagram of the structure of a fully automated stool sample testing device disclosed in this invention;

[0040] Figure 2 This is a schematic diagram of the structure of a fully automated stool sample testing device disclosed in this invention;

[0041] Figure 3 This is a schematic diagram of the structure of a fully automated stool sample testing device disclosed in this invention;

[0042] Figure 4 This is a schematic diagram of the structure of a fully automated stool sample testing device disclosed in this invention;

[0043] Figure 5 This is a schematic diagram of the connection structure of the first guide device, the second guide device, and the third guide device in a fully automatic stool sample detection device disclosed in this invention;

[0044] Figure 6 This is a schematic diagram of the sampling device in a fully automated stool sample detection device disclosed in this invention;

[0045] Figure 7 This is a schematic diagram of a puncture mechanism in a fully automated stool sample detection device disclosed in this invention;

[0046] Figure 8This is a schematic diagram of another puncture mechanism in a fully automatic stool sample detection device disclosed in this invention;

[0047] Figure 9 This is the front view of the reagent kit;

[0048] Figure 10 This is a rear view of the kit.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Base plate; 11. Sampling port; 12. Camera bracket; 13. Camera; 14. Drop groove; 15. T-junction

[0051] 20. Support; 21. Sampling rod; 22. Reagent kit push rod; 23. Sampling rod unlock push rod; 24. Third motor; 25. First sensor; 26. Second sensor; 27. Third sensor; 28. Fourth sensor; 29. ​​Fifth sensor;

[0052] 30. Receptacle holder; 31. Through hole; 32. First guide rail; 33. First slider; 34. First lead screw; 35. Seventh motor;

[0053] 40. Peristaltic pump; 41. First piercing rod; 42. First motor; 43. Second piercing rod; 44. Second motor; 45. Piercing rod mounting bracket;

[0054] 50. Sampling module mounting base; 51. Second guide rail; 52. Second slider; 53. Sampling rod clamping head; 54. Fourth motor; 55. Second lead screw; 56. First fixing component;

[0055] 60. Third guide rail; 61. Second fixing component; 62. Third slider; 63. Third lead screw; 64. Fifth motor; 65. Fourth slider;

[0056] 70. Fifth guide rail; 71. Fourth lead screw; 72. Sixth motor;

[0057] 80. Test strip box; 81. First pinhole; 82. Second pinhole; 83. Third pinhole; 84. Sample storage area; 85. Flow guide. Detailed Implementation

[0058] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0059] See Figure 1-4 As shown;

[0060] The fully automatic stool sample detection device of the present invention includes:

[0061] The base plate 10 has a sampling hole 11 in the middle of its top surface. The base plate 10 can be installed on a toilet (including but not limited to a seated toilet or a squat toilet).

[0062] A first guide device is mounted on the top surface of the base plate 10;

[0063] A second guide device is mounted on the first guide device and is capable of moving along the length of the first guide device;

[0064] A sampling device, which is mounted on a second guide device and is movable along the length of the second guide device;

[0065] The bracket 20 is installed on one side of the first guide device and is set on the top surface of the base plate 10. The end of the bracket 20 near the sampling device is provided with a receiving groove to accommodate the sampling rod 21.

[0066] A third guiding device is mounted on the side of the bracket 20 near the sampling device. A reagent kit holder 30 is mounted on the end of the third guiding device near the sampling device. The reagent kit holder 30 can move along the length of the third guiding device. A reagent kit push rod 22 is mounted on the end of the bracket 20 away from the reagent kit holder 30. A through hole 31 is provided on the side of the reagent kit holder 30 near the reagent kit push rod 22. The reagent kit push rod 22 can extend into the through hole 31.

[0067] The testing mechanism is mounted on the side of the bracket 20 away from the sampling device.

[0068] The detection mechanism includes two puncture mechanisms, both of which are mounted on the side of the bracket 20 away from the sampling device, and each puncture mechanism is connected to a corresponding peristaltic pump 40.

[0069] Specifically, the sampling device can be moved to the sampling hole 11 position for sampling via the first and second guide devices, and the collected sample is sent to the reagent kit 30 position. The movement of the third guide device, in coordination with the detection mechanism, can mix the collected sample with the detection liquid and detect it via the test strip box.

[0070] See Figure 1-4 As shown in Figures 7-8;

[0071] The piercing mechanism includes:

[0072] The first piercing rod 41 has its power input end connected to the output end of the first motor 42;

[0073] The second piercing rod 43 is installed below the first piercing rod 41, and the power input end of the second piercing rod 43 is connected to the output end of the second motor 44.

[0074] A piercing rod mounting bracket 45 is provided, on which both the first piercing rod 41 and the second piercing rod 43 are mounted. Both the first piercing rod 41 and the second piercing rod 43 are also connected to a peristaltic pump 40. The piercing rod mounting bracket 45 is mounted on the support 20. The peristaltic pump 40 controls the corresponding second piercing rod 43 to draw in diluent or extract gas, and controls the corresponding first piercing rod 41 to inject diluent or extract gas.

[0075] A camera bracket 12 is mounted on the base plate 10. The camera bracket 12 is positioned near the sampling device and installed between the peristaltic pump 40 and the bracket 20. A camera 13 is mounted on the camera bracket 12, and the camera is used to capture the color of the test strip. A sampling rod unlocking push rod 23 is mounted on the end of the bracket 20 near the camera bracket 12. The sampling rod unlocking push rod 23 is connected to the third motor 24.

[0076] See Figure 1-4 As shown in Figure 5;

[0077] The third guiding device includes two first guide rails 32, which are respectively installed at the top and bottom of the bracket 20. Each of the two first guide rails 32 is provided with a first slider 33 that can move along its length. The first slider 33 away from the base plate 10 is connected to a first lead screw 34. The rotation of the first lead screw 34 drives the first slider 33 to move along the corresponding first guide rail 32. The first lead screw 34 is driven to rotate by a seventh motor 35. The first lead screw 34 and the seventh motor 35 are installed on the bracket 20. The reagent kit holder 30 is installed on the two first sliders 33.

[0078] The first sensor 25, the second sensor 26, the third sensor 27, the fourth sensor 28 and the fifth sensor 29 are sequentially installed on the end of the bracket 20 away from the base plate 10. The first sensor 25 is set close to the sampling rod unlocking push rod 23.

[0079] A drop trough 14 is installed on the top surface of the base plate 10. The drop trough 14 is located below the first guide rail 32. The discharge end of the drop trough 14 passes through the base plate 10 and is located near the end of the base plate 10. The discharge end of the drop trough 14 is located near the peristaltic pump 40.

[0080] See Figure 1-4 As shown in Figure 6;

[0081] The sampling device includes:

[0082] The sampling module mounting base 50 is movable along the length direction of the second guide device.

[0083] The second guide rail 51 is mounted on the sampling module mounting base 50 by the first fixing member 52 at its bottom end.

[0084] The second slider 52 is movable along the length direction of the second guide rail 51. A sampling rod clamping head 53 is installed on the second slider 52. The sampling rod clamping head 53 is driven by a fourth motor 54, which is installed on the second slider 52.

[0085] The second lead screw 55 is mounted on the outside of the second guide rail 51. The rotation of the second lead screw 55 drives the second slider 52 to move on the second guide rail 51.

[0086] See Figure 1-4 As shown;

[0087] The second guiding device includes a third guide rail 60. The bottom surfaces at both ends of the third guide rail 60 are connected to a third slider 62 via a second fixing member 61. The third slider 33 can move along the length direction of the first guiding device. A third lead screw 63 is installed on the side of the third guide rail 60 away from the bracket. The third lead screw 63 is driven by a fifth motor 64. The fifth motor 64 is installed on the end of the third guide rail 60 away from the second guide rail 51. A fourth slider 65 is installed on the third lead screw 63. The fourth slider 65 drives the sampling module fixing seat 50 to move along the length direction of the third guide rail 60.

[0088] The first guiding device includes two fifth guide rails 70, which are respectively installed on both sides of the sampling hole 11. Two third sliders 62 move along the length of the two fifth guide rails 70. A fourth lead screw 71 is installed on the inner side of one of the fifth guide rails 70. The fourth lead screw 71 drives the corresponding third slider 33 to move on the fifth guide rail 70 through a sixth motor 72.

[0089] For specific usage, please refer to Figure 1-10As shown, after the test strip box 80 is inserted into the test strip box holder 30, the fourth motor 54 drives the sampling rod clamping head 53 to move downward through the second lead screw 55 and the second slider 52. After moving to the set position, the sampling rod clamping head 53 clamps the sampling rod 21, and then the sampling rod clamping head 53 drives the sampling rod 21 to return to the initial position. According to the defecation position command issued by the controller, the sixth motor 72 drives the sampling module fixing seat 50 to move towards the sampling hole 11 through the fourth lead screw 71 and the second guide device. The fifth motor 64 drives the fourth slider 65 to move through the third lead screw 63, thereby driving the sampling module fixing seat 50 to move towards the sampling hole 11 and reach the target position. After being positioned (above sampling hole 11), the fourth motor 54 drives the sampling rod gripper head 53 to move downward via the second lead screw 55 and the second slider 52, and the sampling rod 21 collects the stool sample. After collection, the sampling rod 21 is reset under the drive of the fourth motor 54. The sixth motor 72 and the fifth motor 64 drive the sampling module fixing frame to reset. The fourth motor 54 drives the sampling rod gripper head 53 to move downward. After reaching the set position, the third motor 24 drives the sampling rod unlocking push rod 23 to move forward via the rack and pinion, squeezing the sampling rod gripper head 53 to separate it from the sampling rod 21. Then the sampling rod gripper head 53 is reset, and the sampling rod 21 is inserted into the sample storage area 84 of the test paper box 80.

[0090] The seventh motor 35 rotates via the first lead screw 34, driving the test strip holder on the first slider 33 of the test strip box to move. When it reaches the third sensor 27, it stops moving. The first motor 42 and the second motor 43, which are close to the sampling rod unlocking push rod 23, drive the first piercing rod 41 and the second piercing rod 43 to move respectively. The needles at the ends of the first piercing rod 41 and the second piercing rod 43 pierce the test strip sealing film of the test strip box 80 through the first needle hole 81 and the second needle hole 82. The corresponding peristaltic pump 40 starts and draws diluent through the second piercing rod 43. The first piercing rod 41 injects the diluent into the sample storage area 84 to form a stool test solution. After the action is completed, the first piercing rod 41 stops working, and the test strip holder 30 continues to move until it reaches the fourth sensor 28 and stops moving.

[0091] The first motor 42, located near the seventh motor, drives the corresponding first piercing rod 41 to move. The needle at the end of the first piercing rod 41 pierces the test strip box seal at the first needle hole 81. The corresponding peristaltic pump 40 starts, extracting gas and drawing out the gas inside the test strip box 80, while simultaneously allowing the diluent to fully mix with the stool sample. After extraction, the second motor 43 drives the second piercing rod 43 to move. The needle at the end of the second piercing rod 43 pierces the test strip box seal at the third needle hole 83. The pipeline channel is switched through the three-way valve 15 on the base plate 10, and the peristaltic pump 40 extracts gas from the third needle hole 83. The stool sample flows along the guide groove 85 inside the test strip box 80 to the test strip reaction area 86. The test strip 80 comes into contact with the liquid in the guide tube 85 at the bottom of the test strip 0, and a reaction occurs. After the reaction is complete, the seventh motor 35 drives the test strip holder to move forward until it reaches the second sensor 26, at which point the movement stops. The camera 13 takes a picture of the test strip in the reaction area and uploads it. After the picture is taken, the seventh motor 35 drives the test strip holder 30 to move towards the test strip holder push rod 31. During the movement, the test strip holder push rod 23 inserts into the through hole 41 on the test strip holder 30 and pushes the test strip box 80 down. The test strip box 80 is discharged from the drop groove 14 and reaches the fifth sensor 29, at which point the movement stops. The seventh motor 35 drives the test strip holder 30 to move in the opposite direction until it reaches the second sensor 26, at which point the movement stops, and the measurement ends.

[0092] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fully automatic stool sample testing device, characterized in that, include: A sampling hole (11) is provided in the middle of the top surface of the base plate (10). A first guide device is installed on the top surface of the base plate (10); A second guide device is mounted on the first guide device and is capable of moving along the length of the first guide device; A sampling device, which is mounted on a second guide device and is movable along the length of the second guide device; The bracket (20) is installed on one side of the first guide device and is set on the top surface of the base plate (10). The bracket (20) has a receiving groove for accommodating the sampling rod (21) at the end near the sampling device. The third guide device is mounted on the side of the bracket (20) near the sampling device. A reagent kit holder (30) is mounted on the end of the third guide device near the sampling device. The reagent kit holder (30) can move along the length of the third guide device. A reagent kit push rod (22) is mounted on the end of the bracket (20) away from the reagent kit holder (30). A through hole (31) is provided on the side of the reagent kit holder (30) near the reagent kit push rod (22). The reagent kit push rod (22) can extend into the through hole (31). The testing mechanism is mounted on the side of the bracket (20) away from the sampling device; The detection mechanism includes two puncture mechanisms, both of which are mounted on the side of the bracket (20) away from the sampling device, and each puncture mechanism is connected to a corresponding peristaltic pump (40); The piercing mechanism includes: The first piercing rod (41) has its power input end connected to the output end of the first motor (42); The second piercing rod (43) is installed below the first piercing rod (41), and the power input end of the second piercing rod (43) is connected to the output end of the second motor (44); The first piercing rod (41) and the second piercing rod (43) are both mounted on the piercing rod mounting bracket (45). The first piercing rod (41) and the second piercing rod (43) are also connected to a peristaltic pump (40). The piercing rod mounting bracket (45) is mounted on the bracket (20). The peristaltic pump (40) controls the corresponding second puncture rod (43) to draw up the diluent or extract the gas, and controls the corresponding first puncture rod (41) to inject the diluent or extract the gas.

2. The fully automatic stool sample detection device according to claim 1, characterized in that: A camera bracket (12) is mounted on the base plate (10). The camera bracket (12) is located near the sampling device and is installed between the peristaltic pump (40) and the bracket (20). A camera (13) is mounted on the camera bracket (12).

3. The fully automatic stool sample detection device according to claim 2, characterized in that: A sampling rod unlocking push rod (23) is installed on the end of the bracket (20) near the camera bracket (12), and the sampling rod unlocking push rod (23) is connected to the third motor (24).

4. The fully automatic stool sample detection device according to claim 1, characterized in that: The third guiding device includes two first guide rails (32), which are respectively installed on the top and bottom of the bracket (20). Each of the two first guide rails (32) is provided with a first slider (33) that can move along its length. The first slider (33) away from the base plate (10) is connected to the first lead screw (34). The rotation of the first lead screw (34) drives the first slider (33) to move along the corresponding first guide rail (32). The first lead screw (34) is driven to rotate by the seventh motor (35). The first lead screw (34) and the seventh motor (35) are installed on the bracket (20). The reagent kit holder (30) is installed on the two first sliders (33).

5. The fully automatic stool sample detection device according to claim 4, characterized in that: The first sensor (25), the second sensor (26), the third sensor (27), the fourth sensor (28) and the fifth sensor (29) are sequentially installed on the end of the bracket (20) away from the base plate (10). The first sensor (25) is set close to the sampling rod unlocking push rod (23).

6. The fully automatic stool sample detection device according to claim 5, characterized in that: A drop groove (14) is installed on the top surface of the base plate (10). The drop groove (14) is located below the first guide rail (32). The discharge end of the drop groove (14) passes through the base plate and is set near the end of the base plate (10). The discharge end of the drop groove (14) is set near the peristaltic pump (40).

7. The fully automatic stool sample detection device according to claim 1, characterized in that: The sampling device includes: The sampling module mounting base (50) is movable along the length direction of the second guide device. The bottom end of the second guide rail (51) is mounted on the sampling module mounting base (50) by the first fixing member (56); The second slider (52) is capable of moving along the length direction of the second guide rail (51). A sampling rod clamping head (53) is installed on the second slider (52). The sampling rod clamping head (53) is driven by a fourth motor (54). The fourth motor (54) is installed on the second slider (52). The second lead screw (55) is mounted on the outside of the second guide rail (51). The rotation of the second lead screw (55) drives the second slider (52) to move on the second guide rail (51).

8. The fully automatic stool sample detection device according to claim 1, characterized in that: The second guiding device includes a third guide rail (60), the bottom surfaces of both ends of the third guide rail (60) are connected to the third slider (62) by the second fixing member (61) respectively, and the third slider (62) can move along the length direction of the first guiding device; a third lead screw (63) is installed on the side of the third guide rail (60) away from the bracket, and the third lead screw (63) is driven by a fifth motor (64), the fifth motor (64) is installed on the end of the third guide rail (60) away from the second guide rail (51), and a fourth slider (65) is installed on the third lead screw (63), and the fourth slider (65) drives the sampling module fixing seat (50) to move along the length direction of the third guide rail (60).

9. The fully automatic stool sample detection device according to claim 1, characterized in that: The first guiding device includes two fifth guide rails (70), which are respectively installed on both sides of the sampling hole (11). Two third sliders (62) move along the length of the two fifth guide rails (70). A fourth lead screw (71) is installed on the inner side of one of the fifth guide rails (70). The fourth lead screw (71) drives the corresponding third slider (62) to move on the fifth guide rail (70) through a sixth motor (72).

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