A fully automatic absorption tube sampling and cleaning machine and method

Abstract

The present invention discloses a fully automatic absorption tube sampling and cleaning integrated machine and method, comprising a base, and also comprising: an absorption tube fixing mechanism, comprising an articulated seat, an absorption tube rack group, a multifunctional rotating module, and a customized rubber group, wherein the multifunctional rotating module is used to control the absorption tube rack group to undergo reciprocating angular deflection along its own axial direction; a cleaning component, comprising a liquid storage tank and a pure water peristaltic pump disposed on the base, wherein the liquid storage tank has a pure water tank and a waste liquid tank isolated from the pure water tank; a sampling component, comprising a test tube rack disposed on the base, a plurality of sampling needles, and a high-precision peristaltic pump; and a drive component, which is used to control the sampling needle to extend into a test tube or a pure water tank. The present application, through the automated coordination of the absorption tube rack group, the drive component, the sampling component, and the cleaning component, can simultaneously rinse, add liquid, sample, and clean multiple absorption tubes fixed to the absorption tube rack, effectively improving experimental efficiency and reducing labor costs.

Description

Technical Field

[0001] The present invention relates to the technical field of atmospheric pollutant detection, and in particular to a fully automatic absorption tube sampling and cleaning integrated machine. Background Art

[0002] In atmospheric pollutant detection experiments, porous glass plate absorption tubes are often required. Specifically, a reagent solution is injected into the absorption tube. Pollutants in the air enter the absorption tube through the air inlet tube of the absorption tube and mix with the reagent solution. The reagent solution reacts with the air to absorb the pollutants in the air to form a sample solution. The sample solution is quantitatively sampled and reacts with the reaction reagent to detect the pollutant content.

[0003] However, the above-mentioned absorption tubes need to be manually operated by the experimenter throughout the entire experimental process, including but not limited to manually adding reagents, rinsing the absorption tubes with reagents, transferring the solution into an empty test tube using an ear bulb after the absorption reaction is complete, and cleaning the used absorption tubes with pure water. Manual operation is inefficient and has high labor costs.

[0004] Therefore, the present application designs a fully automatic absorption tube sampling and cleaning all-in-one machine and method to address one or more of the above problems. Summary of the Invention

[0005] The present invention provides a fully automatic absorption tube sampling and cleaning integrated machine and method, which can effectively solve the above problems.

[0006] The present invention relates to a fully automatic absorption tube sampling and cleaning integrated machine, comprising a base and:

[0007] The absorption tube fixing mechanism includes an articulated seat, an absorption tube rack group, a multifunctional rotating module, and a customized rubber group. The absorption tube rack group includes several absorption tube racks, each having a plurality of hole-shaped connectors for placing the absorption tubes and a fixing member for locking the absorption tubes in the hole-shaped connectors. The customized rubber group is arranged corresponding to the hole-shaped connectors and includes a first rubber ring connected to the air inlet pipe of the absorption tube and a second rubber ring connected to the air outlet pipe. The articulated seat is arranged on the base, and the absorption tube rack group is rotatably connected to the articulated seat. The multifunctional rotating module is used to control the reciprocating angle deflection of the absorption tube rack group along its own axis.

[0008] The cleaning assembly includes a liquid storage tank and a pure water peristaltic pump disposed on the base, wherein the liquid storage tank has a pure water tank and a waste liquid tank isolated from the pure water tank; the pure water peristaltic pump is connected to the pure water tank to pump pure water into the pure water tank;

[0009] The sampling assembly includes a test tube rack arranged on the base, several sampling needles and a high-precision peristaltic pump. Infusion tubes are arranged between the sampling needle and the high-precision peristaltic pump, and between the high-precision peristaltic pump and the second rubber ring on the air outlet of the absorption tube. The high-precision peristaltic pump is used to pump the reagent or pure water sucked by the sampling needle into the absorption tube through the air outlet of the absorption tube;

[0010] The driving assembly is used to control the sampling needle to extend into the test tube or the pure water tank.

[0011] As a further improvement, the absorption tube rack includes a first positioning plate, the hole-shaped connecting piece includes a plurality of first positioning holes opened on the first positioning plate, the first positioning hole includes an enlarged ball hole and a supporting groove arranged on both sides of the diameter direction of the enlarged ball hole, the enlarged ball and the air outlet pipe of the absorption tube can pass through the enlarged ball hole at the same time, and the bottom of the air inlet pipe and the air outlet pipe of the absorption tube are abutted against the inner wall of the supporting groove.

[0012] As a further improvement, the first rubber ring and the second rubber ring both have elastic tension, and the first rubber ring and the second rubber ring are respectively slidably connected to both sides of the length direction of the first positioning plate; when the absorption tube is placed in the hole-shaped connecting piece on the absorption tube rack, the first rubber ring and the second rubber ring can move toward each other until the first rubber ring is wrapped around the fixed air inlet tube and the second rubber ring is wrapped around the fixed air outlet tube.

[0013] As a further improvement, the absorption tube rack also includes a top plate rotatably connected to the first positioning plate. When the absorption tube is placed in the positioning hole, the top plate can be rotated toward the first positioning plate until it is against the top of the absorption tube's air inlet pipe and air outlet pipe. The fixing member is an eccentric wheel rotatably set on the first positioning plate, and the eccentric wheel is used to lock the top plate in a state of being against the top of the absorption tube's air inlet pipe and air outlet pipe.

[0014] As a further improvement, adjacent hole-shaped connectors are staggered on the absorber tube rack.

[0015] As a further improvement, the absorption pipe rack is provided with a rotating shaft on both sides opposite to each other, and the absorption pipe rack is rotatably connected to the hinge seat through the rotating shaft. The multifunctional rotating module includes a rotating motor, a first transmission roller, a second transmission roller and a transmission belt wrapped around the first transmission roller and the second transmission roller. The output shaft of the rotating motor is fixedly connected to the rotation center of the first transmission roller, and the second transmission roller is fixedly connected to the circumferential side of the rotating shaft.

[0016] As a further improvement, the sampling assembly further includes a mounting arm, and a plurality of sampling needles are spaced apart along the length direction of the mounting arm.

[0017] As a further improvement, the drive assembly includes a horizontal connecting block slidably connected to the base, a vertical connecting block sliding along the height direction of the horizontal connecting block, and the vertical mounting block is connected to the mounting arm; the drive assembly also includes a horizontal motor screw structure arranged on the base and used to control the horizontal connecting block to slide in the horizontal direction, and a vertical motor screw structure arranged on the horizontal connecting block and used to control the vertical connecting block to slide in the vertical direction.

[0018] The present invention also relates to a method for a fully automatic absorption tube sampling and cleaning machine, comprising the following steps:

[0019] S100: Add the prepared quantitative solution to the test tubes in sequence, and place the test tubes in a test tube rack. Use a sampling needle and a high-precision peristaltic pump to quantitatively pump the reagent into the absorption tube. Start the multifunctional rotating module to make the absorption tube rack group reciprocate along its own axis, so that the reagent fully contacts the inner wall of the absorption tube and rinses it.

[0020] S200: After air enters the absorption tube through the air inlet tube and reacts completely with the reagent in the absorption tube to form a sample solution, a new empty test tube for receiving the reaction solution is placed in the test tube rack. The sample solution in the absorption tube is quantitatively pumped into the empty test tube again using the sampling needle to complete sampling of the absorption tube;

[0021] S300: With the help of the driving component, the sampling needle is moved to the pure water tank. Under the action of the high-precision peristaltic pump, pure water is peristaltically pumped into the absorption tube. The multi-functional rotating module is started to make the absorption tube rack group reciprocate along its own axis to perform oscillation cleaning on the inner wall of the absorption tube. After cleaning, the sampling needle is moved to the waste liquid tank. At this time, the high-precision peristaltic pump pumps the waste liquid into the waste liquid tank, and then discharges the waste liquid out of the base to complete the cleaning of the absorption tube.

[0022] The beneficial effects of the present invention are:

[0023] The present application uses the automated coordination of the absorption tube rack group, drive assembly, sampling assembly and cleaning assembly to simultaneously rinse, add liquid, sample and clean multiple absorption tubes fixed on the absorption tube rack, thereby effectively improving experimental efficiency and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0026] Figure 2 This is a schematic structural diagram of an absorber tube fixing mechanism provided by an embodiment of the present invention;

[0027] Figure 3 This is a schematic structural diagram of a supporting groove provided by an embodiment of the present invention;

[0028] Figure 4 is a schematic cross-sectional view of a first transmission roller provided by an embodiment of the present invention;

[0029] Figure 5 is a structural diagram of a horizontal connection block provided by an embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of the overall structure of the absorption tube.

[0031] The accompanying drawings are marked as follows:

[0032] 10. Absorption tube fixing mechanism; 11. Absorption tube rack; 111. First positioning plate; 1111. Ball expansion hole; 1112. Landing groove; 112. Second positioning plate; 1121. Second positioning hole; 113. Top plate; 114. Connecting plate; 115. Sliding seat; 116. Sliding rod; 117. Mounting plate; 118. Reinforcement plate; 12. Multifunctional rotating module; 121. Rotating motor; 122. First transmission roller; 123. Second transmission roller; 124. Transmission belt; 13. Customized rubber group; 14. Articulated seat; 141. Bottom plate; 142. Vertical plate; 143. Assembly seat; 15. First rubber ring; 16. Second rubber ring; 17. Fixing part; 20. Sampling assembly; 21. Test tube rack; 22. Sampling part; 221. Mounting arm; 222. Sampling needle; 23. High-precision peristaltic pump; 30. Cleaning assembly; 31. Liquid storage tank; 311. Pure water tank; 312. Waste liquid tank; 313. Waste discharge chamber; 32. Pure water peristaltic pump; 40. Driving assembly; 41. Horizontal connecting block; 42. Horizontal motor; 43. Vertical connecting block; 431. Vertical connecting plate; 44. Vertical motor; 50. Base; 60. Absorption tube; 61. Air inlet pipe; 611. Air inlet pipe; 612. Enlarging ball; 62. Air outlet pipe; 621. Air outlet pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0035] The fully automatic absorption tube sampling and cleaning machine of the present invention is mainly designed for the structure of the porous glass plate absorption tube 60, such as Figure 6 As shown, the porous glass plate absorption tube 60 includes an air inlet pipe 61 and an air outlet pipe 62 connected to the air inlet pipe 61, an expansion ball 612 is formed near the top of the air inlet pipe 61, an air inlet pipe 611 connected to the air inlet pipe 61 is formed at one end of the air inlet pipe 61 away from the air outlet pipe 62, and an air outlet pipe 621 connected to the air outlet pipe 62 is formed at one end of the air outlet pipe 62 away from the air inlet pipe 61, the air inlet pipe 611 and the air outlet pipe 621 extend in opposite directions, and the central axes of the air inlet pipe 611 and the air outlet pipe 621 are arranged collinearly.

[0036] like Figure 1 As shown, a fully automatic absorption tube sampling and cleaning machine includes a base 50. The machine also includes an absorption tube fixing mechanism 10, a sampling assembly 20, a cleaning assembly 30, and a drive assembly 40 disposed on the base 50. The drive assembly 40 is used to control the connection between the absorption tube fixing mechanism 10 and the sampling assembly 20 or the cleaning assembly 30.

[0037] like Figure 1 、 Figure 2As shown, the absorption tube fixing mechanism 10 comprises an articulated seat 14, an absorption tube rack assembly, a multifunctional rotating module 12, and a custom rubber assembly 13. The absorption tube rack assembly comprises several absorption tube racks 11, each with a hole-shaped connector for accommodating the absorption tubes. The custom rubber assembly 13 corresponds to the hole-shaped connector. The articulated seat 14 is fixedly connected to the base 50, and the absorption tube rack assembly is rotatably connected within the articulated seat 14. The multifunctional rotating module 12 controls the reciprocating angular deflection of the absorption tube racks 11 along their axis to rinse or clean the absorption tubes.

[0038] like Figure 2 As shown, because the absorber tubes have enlarged balls 612, and their diameter is much larger than that of the outlet pipe 62, the absorber tubes occupy a large amount of space when they are secured to the hole-shaped connectors. To address this issue, adjacent hole-shaped connectors on the absorber tube rack 11 are staggered, with their central axes offset. This increases the number of absorber tubes that can be secured to an absorber tube rack 11 of the same size. Similarly, the mounting position of the custom rubber assembly 13 corresponding to the hole-shaped connectors also requires adaptive adjustment.

[0039] In this embodiment, the number of absorption tube racks 11 in one absorption tube rack group is two. In other embodiments, the number of absorption tube racks 11 may be multiple, depending on the experimental requirements and the number of absorption tubes used.

[0040] like Figure 2 As shown, the absorber tube rack 11 includes a first positioning plate 111, a connecting plate 114 vertically and fixedly connected to both ends of the length direction of the first positioning plate 111, and a second positioning plate 112 fixedly connected to the end of the connecting plate 114 away from the first positioning plate 111. The length direction of the second positioning plate 112 is parallel to the length direction of the first positioning plate 111.

[0041] like Figure 2 As shown, the hole-shaped connector includes a first positioning hole defined in the first positioning plate 111 and a second positioning hole 1121 defined in the second positioning plate 112. The first and second positioning holes 1121 are positioned opposite each other along the height of the connecting plate 114. The first positioning hole allows for the simultaneous passage of the expansion ball 612 and the outlet pipe 62. After the absorption tube is sequentially placed into the first and second positioning holes 1121 from top to bottom along the height of the connecting plate 114, the inlet pipe 611 and the outlet pipe 621 rest against the inner wall of the first hole, achieving initial positioning of the absorption tube.

[0042] Further, such as Figure 2 、 Figure 3As shown, the first positioning hole includes an enlarged ball hole 1111 and two supporting grooves 1112 connected to the enlarged ball hole 1111. The two supporting grooves 1112 are located at opposite ends of the enlarged ball hole 1111 in the diameter direction. When the absorber tube is placed, the enlarged ball 612 and the outlet tube 62 of the absorber tube can pass through the enlarged ball hole 1111 at the same time, and the bottoms of the inlet tube 611 and the outlet tube 621 abut against the inner wall of the supporting grooves 1112.

[0043] like Figure 2 、 Figure 3 As shown, the absorption tube rack 11 also includes a top plate 113, and the length of the top plate 113 in the longitudinal direction is the same as the length of the first positioning plate 111 in the longitudinal direction. The top plate 113 is rotatably connected to one end of the first positioning plate 111 in the longitudinal direction. The first positioning plate 111 is provided with a fixing member 17 at one end away from the rotation center of the top plate 113. The fixing member 17 is used to lock the top plate 113 in a state of abutting against the top of the air inlet pipe 611 and the air outlet pipe 621. In this embodiment, an eccentric wheel structure is used as the fixing member 17, and the specific eccentric wheel structure is installed on the first positioning plate 111. In other embodiments, a locking and fixing structure such as screws, snap buckles, and hasps can also be used as the fixing member 17.

[0044] Specifically, such as Figure 2 、 Figure 3 As shown, when the bottom of the air inlet tube 611 and the air outlet tube 621 of the absorption tube are resting on the inner wall of the resting groove 1112, the top plate 113 is rotated toward the direction close to the first positioning plate 111 until the top plate 113 and the top of the air inlet tube 611 and the air outlet tube 621 are all in contact with each other. At this time, with the help of the fixing member 17, the top plate 113 is locked in a state of being in contact with the top of the air inlet tube 611 and the air outlet tube 621, and the absorption tube can be locked in the hole-shaped connecting member.

[0045] like Figure 1 、 Figure 2 、 Figure 3 As shown, the customized rubber assembly 13 includes two customized rubber rings. One customized rubber ring is used to connect to the air inlet tube 611 to prevent the liquid in the absorption tube from overflowing through the air inlet tube 61, and the other customized rubber ring is connected to the air outlet tube 621 to connect the air outlet tube 621 to the cleaning assembly 30 or the sampling assembly 20. For ease of description, the customized rubber ring connected to the air inlet tube 611 is defined as the first rubber ring 15, and the customized rubber ring connected to the air outlet tube 621 is defined as the second rubber ring 16.

[0046] like Figure 2 、 Figure 3As shown, the absorber tube rack 11 also includes sliding seats 115 slidably connected to opposite sides of the first positioning plate 111. Mounting plates 117 are fixedly mounted on opposite sides of the connecting plate 114 in the height direction. A plurality of sliding rods 116 are perpendicularly and fixedly connected to the distal ends of the two mounting plates 117. The sliding seats 115 have sliding holes for the sliding rods 116 to slide through. A reinforcement plate 118 is fixedly connected to the ends of the plurality of sliding rods 116 distal from the mounting plates 117. It should be noted that the sliding seats 115 are high-friction sliders, meaning that the friction between the sliding rods 116 and the sliding holes is relatively high, requiring a significant external force to move the sliding seats 115.

[0047] like Figure 2 、 Figure 3 As shown, the first rubber ring 15 is fixedly connected to the sliding seat 115 on the side away from the sampling assembly 20, while the second rubber ring 16 is fixedly connected to the other sliding seat 115. The rubber rings are made of a rubber material with elastic tension and can wrap and secure the air inlet tube 611 or the air outlet tube 621. When the absorption tube is locked in the hole-shaped connector, the two sliding seats 115 are moved toward each other until the first rubber ring 15 wraps and secures the air inlet tube 611 and the second rubber ring 16 wraps and secures the air outlet tube 621.

[0048] like Figure 2 、 Figure 3 As shown, the hinged base 14 comprises a base plate 141 and vertical plates 142 fixed perpendicularly to the longitudinal ends of the base plate 141. The base plate 141 is fixedly connected to the base 50. The absorber tube racks 11 have protruding rotation axes formed on opposite sides. The rotation axes on the sides of the two absorber tube racks 11 that are spaced apart are rotationally connected to the vertical plates 142, while the rotation axes on the sides of the two absorber tube racks 11 that are close to each other are fixedly connected.

[0049] like Figure 2 、 Figure 4 As shown, an assembly base 143 is vertically fixed in the middle of the base plate 141. The assembly base 143 is a half-spliced structure and is installed using a threaded connection. The multifunctional rotating module 12 is installed within the assembly base 143. Specifically, the multifunctional rotating module 12 includes a rotating motor 121, a first drive roller 122, a second drive roller 123, and a transmission belt 124 that loops around the first and second drive rollers 122, 123. The first and second drive rollers 122, 123 are both rotatably connected within the assembly base 143. The rotating motor 121 is mounted on the assembly base 143. The output shaft of the rotating motor 121 extends into the assembly base 143 and is fixedly connected to the rotation center of the first drive roller 122. The second drive roller 123 is sleeved and fixed to the rotating shaft on the adjacent side of the two absorber tube racks 11. It should be noted that in this embodiment, the rotating motor 121 is a forward and reverse rotating motor.

[0050] like Figure 1 、 Figure 5 As shown, the sampling assembly 20 includes a test tube rack 21, a sampling component 22, and a high-precision peristaltic pump 23. The test tube rack 21 is fixedly connected to the base 50 and has several test tube slots for placing test tubes. The sampling component 22 includes a mounting arm 221 and a plurality of sampling needles 222 arranged in an array along the length of the mounting arm 221. The sampling needles 222 correspond to the number of test tube slots. When the sampling needles 222 are sampling, they are positioned relative to the test tube slots. Infusion tubes (not shown) are installed between the sampling needles 222 and the high-precision peristaltic pump 23, and between the high-precision peristaltic pump 23 and the second rubber ring 16.

[0051] like Figure 5 As shown, the drive assembly 40 includes a horizontal connecting block 41, a vertical connecting block 43, a horizontal motor 42, and a vertical motor 44. A linear bearing structure is provided on the base 50 for sliding connection of the horizontal connecting block 41. The horizontal motor 42 is fixedly connected to the base 50. A lead screw is fixedly welded to the output end of the horizontal motor 42. The lead screw extends in the horizontal direction and is threadedly connected to the horizontal connecting block 41.

[0052] like Figure 5 As shown, a vertical connecting plate 431 is fixedly connected to one side of the horizontal connecting block 41. The vertical connecting plate 431 extends along the height of the workbench, and the vertical motor 44 is mounted on the vertical connecting plate 431 via bolts. A linear bearing structure for sliding connection of the vertical connecting block 43 is fixedly connected to the vertical connecting plate 431. One end of the vertical connecting block 43 is fixedly connected to the mounting arm 221. A lead screw is fixedly welded to the output end of the vertical motor 44. The lead screw extends in the vertical direction and is threadedly connected to the vertical connecting block 43.

[0053] like Figure 1 As shown, the cleaning assembly 30 includes a liquid reservoir 31 and a pure water peristaltic pump 32. The liquid reservoir 31 is located between the high-precision peristaltic pump 23 and the test tube rack 21. The liquid reservoir 31 has a pure water tank 311 for storing pure water and a waste liquid tank 312 for storing waste liquid. The pure water tank 311 and the waste liquid tank 312 are two independent chambers that are not connected. A pure water pipe (not shown) is provided between the pure water peristaltic pump 32 and the pure water tank 311 to connect the two. When the pure water peristaltic pump 32 is activated, pure water is pumped into the pure water tank 311. The liquid reservoir 31 also has a waste discharge chamber 313. A waste discharge hole (not shown) is provided between the waste discharge chamber 313 and the waste liquid tank 312 to connect the two. Waste liquid flows from the waste liquid tank 312 through the waste discharge hole into the waste discharge chamber 313 and then out of the base 50.

[0054] A method for fully automatic absorption tube sampling and cleaning comprises the following steps:

[0055] S100: Add the prepared quantitative solutions to the test tubes in sequence, and place the test tubes in the test tube rack 21. Use the sampling needle 222 and the high-precision peristaltic pump 23 to pump all the reagents into the absorption tube 60. Start the multifunctional rotating module 12 to rotate the absorption tube rack assembly back and forth along its own axis, so that the reagents fully contact the inner wall of the absorption tube 60 and rinse.

[0056] S200: After air enters the absorption tube 60 through the air inlet tube 611 and completely absorbs and reacts with the reagent in the absorption tube 60 to form a sample solution, a new empty test tube for receiving the reaction solution is placed in the test tube rack 21. The sample solution in the absorption tube 60 is quantitatively pumped into the empty test tube again using the sampling needle 222, completing the sampling of the absorption tube 60.

[0057] S300: With the help of the driving component 40, the sampling needle 222 is moved to extend into the pure water tank 311. Under the action of the high-precision peristaltic pump 23, the pure water peristaltic pump 32 enters the absorption tube 60, and the multi-functional rotating module 12 is started to make the absorption tube rack group reciprocate along its own axial direction to perform oscillation cleaning on the inner wall of the absorption tube 60. After cleaning is completed, the sampling needle 222 is moved to extend into the waste liquid tank 312. At this time, the high-precision peristaltic pump 23 pumps the waste liquid into the waste liquid tank 312, and then discharges the waste liquid out of the base 50 to complete the cleaning of the absorption tube 60.

[0058] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A fully automatic absorption tube sampling and cleaning machine, characterized by: It includes a base (50), and further includes: An absorption tube fixing mechanism (10) comprises an articulated seat (14), an absorption tube rack group, a multifunctional rotating module (12) and a customized rubber group (13), wherein the absorption tube rack group comprises a plurality of absorption tube racks (11), the absorption tube rack (11) comprises a plurality of hole-shaped connectors for placing absorption tubes and a fixing member (17) for locking the absorption tubes in the hole-shaped connectors, the customized rubber group (13) is arranged corresponding to the hole-shaped connectors, and the customized rubber group (13) comprises a first rubber ring (15) connected to the absorption tube air inlet pipe (611) and a second rubber ring (16) connected to the air outlet pipe (621); the articulated seat (14) is arranged on the base (50), the absorption tube rack group is rotatably connected to the articulated seat (14), and the multifunctional rotating module (12) is used to control the absorption tube rack group to reciprocate along its own axis. The cleaning assembly (30) includes a liquid storage tank (31) and a pure water peristaltic pump (32) disposed on a base (50); the liquid storage tank (31) has a pure water tank (311) and a waste liquid tank (312) isolated from the pure water tank (311); the pure water peristaltic pump (32) is connected to the pure water tank (311) to pump pure water into the pure water tank (311); The sampling assembly (20) includes a test tube rack (21) arranged on a base (50), a plurality of sampling needles (222) and a high-precision peristaltic pump (23), and a liquid infusion tube is provided between the sampling needle (222) and the high-precision peristaltic pump (23), and between the high-precision peristaltic pump (23) and the second rubber ring (16) on the air outlet tube (621) of the absorption tube. The high-precision peristaltic pump (23) is used to pump the reagent or pure water sucked by the sampling needle (222) into the absorption tube through the air outlet of the absorption tube; A driving assembly (40) for controlling the sampling needle (222) to extend into the test tube or the pure water tank (311); The absorption tube rack (11) includes a first positioning plate (111), and the hole-shaped connecting piece includes a plurality of first positioning holes opened on the first positioning plate (111). The first positioning holes include a ball expansion hole (1111) and a supporting groove (1112) provided on both sides of the ball expansion hole (1111) in a diameter direction. The expansion ball (612) and the air outlet pipe (62) of the absorption tube can pass through the ball expansion hole (1111) at the same time, and the bottom of the air inlet pipe (611) and the air outlet pipe (621) of the absorption tube can abut against the inner wall of the supporting groove (1112). The first rubber ring (15) and the second rubber ring (16) both have elastic tension, and the first rubber ring (15) and the second rubber ring (16) are respectively slidably connected to both sides of the length direction of the first positioning plate (111); when the absorption tube is placed in the hole-shaped connector on the absorption tube rack (11), the first rubber ring (15) and the second rubber ring (16) can move toward a direction close to each other until the first rubber ring (15) is wrapped around the fixed air inlet tube (611) and the second rubber ring (16) is wrapped around the fixed air outlet tube (621); The absorption tube rack (11) further includes a top plate (113) rotatably connected to the first positioning plate (111); when the absorption tube is placed in the positioning hole, the top plate (113) can be rotated toward the first positioning plate (111) until it abuts against the tops of the absorption tube air inlet pipe (611) and the air outlet pipe (621); the fixing member (17) is an eccentric wheel rotatably arranged on the first positioning plate (111); the eccentric wheel is used to lock the top plate (113) in a state of abutting against the tops of the absorption tube air inlet pipe (611) and the air outlet pipe (621); Adjacent hole-shaped connectors are staggered on the absorber tube rack (11).

2. The fully automatic absorption tube sampling and cleaning machine according to claim 1, characterized in that: The absorption tube rack (11) is provided with a rotating shaft on both opposite sides. The absorption tube rack (11) is rotatably connected to the hinge seat (14) via the rotating shaft. The multifunctional rotating module (12) includes a rotating motor (121), a first transmission roller (122), a second transmission roller (123), and a transmission belt (124) wrapped around the first transmission roller (122) and the second transmission roller (123). The output shaft of the rotating motor (121) is fixedly connected to the rotation center of the first transmission roller (122), and the second transmission roller (123) is fixedly connected to the circumference of the rotating shaft.

3. The fully automatic absorption tube sampling and cleaning machine according to claim 1, characterized in that: The sampling assembly (20) further comprises a mounting arm (221), and a plurality of sampling needles (222) are arranged at intervals along the length direction of the mounting arm (221).

4. The fully automatic absorption tube sampling and cleaning machine according to claim 3, characterized in that: The drive assembly (40) includes a horizontal connecting block (41) slidably connected to the base (50), a vertical connecting block (43) sliding in the height direction of the horizontal connecting block (41), and the vertical mounting block is connected to the mounting arm (221); the drive assembly (40) also includes a horizontal motor screw structure arranged on the base (50) and used to control the horizontal connecting block (41) to slide in the horizontal direction, and a vertical motor screw structure arranged on the horizontal connecting block (41) and used to control the vertical connecting block (43) to slide in the vertical direction.

5. A method for a fully automatic absorption tube sampling and cleaning machine according to any one of claims 1 to 4, comprising the following steps: S100: Add the prepared quantitative solution to the test tubes in sequence, and place the test tubes in the test tube rack (21). Pump all the reagents into the absorption tubes with the help of the sampling needle (222) and the high-precision peristaltic pump (23). Start the multifunctional rotating module (12) to make the absorption tube rack group reciprocate along its own axis, so that the reagents are fully in contact with the inner wall of the absorption tube and rinsed. S200: After the air enters the absorption tube (60) through the air inlet tube (611) and reacts completely with the reagent in the absorption tube (60) to form a sample solution, a new empty test tube for receiving the reaction solution is placed in the test tube rack (21), and the sample solution in the absorption tube (60) is quantitatively pumped into the empty test tube again with the aid of the sampling needle (222), thereby completing the sampling of the absorption tube (60); S300: With the help of the driving component (40), the sampling needle (222) is moved to extend into the pure water tank (311). Under the action of the high-precision peristaltic pump (23), the pure water peristaltic pump (32) enters the absorption tube, and the multifunctional rotating module (12) is started to make the absorption tube rack group reciprocate along its own axis to perform vibration cleaning on the inner wall of the absorption tube. After the cleaning is completed, the sampling needle (222) is moved to extend into the waste liquid tank (312). At this time, the high-precision peristaltic pump (23) pumps the waste liquid into the waste liquid tank (312), and then discharges the waste liquid from the base (50), completing the cleaning of the absorption tube.

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