Parallel concentration system and treatment method

Abstract

The invention discloses a parallel concentration system and a treatment method, and belongs to the field of sample pretreatment, and the parallel concentration system comprises a rack, and a three-axis manipulator, a parallel concentration assembly, a mixing assembly, a single-point constant volume assembly and a liquid treatment assembly which are arranged on the rack, the three-axis mechanical arm is located above the parallel concentration assembly, the mixing assembly and the single-point constant-volume assembly, the liquid treatment assembly is located below the single-point constant-volume assembly, and the single-point constant-volume assembly is communicated with the liquid treatment assembly. According to the parallel concentration system and the processing method, through the integrated and automatic parallel concentration system, automatic sample feeding and discharging, automatic vacuum parallel concentration, automatic vortex and automatic high-precision constant volume are achieved, and the parallel concentration system is simple in structure, convenient to operate, high in efficiency and high in accuracy.

Description

Technical Field

[0001] The invention belongs to the field of sample pre-treatment, and in particular relates to a parallel concentration system and a treatment method. Background Art

[0002] Physical and chemical sample pretreatment is a crucial step in chemical analysis. It involves multiple steps such as sample preparation, extraction, purification and concentration, aiming to eliminate matrix interference, improve detection accuracy and protect instruments.

[0003] The existing sample pretreatment uses manual sample concentration, manual mixing, and manual volume determination, which is inefficient, labor-intensive, and affects the accuracy of the experiment.

[0004] In order to solve the problem of manual mixing, an automatic oscillating mixing device for sample pretreatment with application number CN202020610936.7 belongs to the field of experimental instrument technology, including a frame, a voice coil motor, a slide, a position measurement sensor, a rocker, a sample tube clamp mechanism and a controller. The voice coil motor is fixed on the frame, the voice coil motor is vertically connected to the slide, the position measurement sensor is arranged on the slide, the rocker is pivoted on the frame, the slide is rotatably connected to the head end of the rocker, the head end of the rocker to the pivot is a short arm, and the rotation connection leaves a sliding gap parallel to the short arm, the tail end of the rocker is fixed to the sample tube clamp mechanism, and the tail end of the rocker to the pivot is a long arm; the controller is connected to the voice coil motor and the position measurement sensor respectively. It achieves mixing by driving the sample tube clamp mechanism to swing up and down, but it is difficult to ensure that the sample tube clamp mechanism stops at a fixed position every time after stopping, which makes it difficult to cooperate with other automation devices such as manipulators to achieve automatic insertion and extraction of sample tubes. Summary of the invention

[0005] The object of the present invention is to provide a parallel concentration system and a processing method to overcome at least one of the above-mentioned defects in the prior art.

[0006] To achieve this object, the present invention adopts the following technical solutions: The present invention provides a parallel concentration system, comprising a frame, and a three-axis manipulator, a parallel concentration component, a mixing component, a single-point constant volume component, and a liquid processing component arranged on the frame. The three-axis manipulator is located above the parallel concentration component, the mixing component, and the single-point constant volume component, and the liquid processing component is located below the single-point constant volume component, and the single-point constant volume component is connected to the liquid processing component.

[0007] Preferably, the rack has a docking position and a buffer space, the docking position is provided with an identification induction switch, and the buffer space has a positioning pin.

[0008] Preferably, the parallel concentration component is a vacuum parallel concentrator having two independently arranged vacuum extraction modules.

[0009] Preferably, the mixing assembly includes a shell, a Y-axis linear module, a Z-axis linear module, a mounting plate, a first motor, a transmission member, a stirring member, and a pipe rack. The shell is fixed to the frame, the Y-axis linear module and the pipe rack are fixed to the inner bottom wall of the shell, the sliding end of the Y-axis linear module is fixed to the Z-axis linear module, the Z-axis linear module passes through the top wall of the shell, the sliding end of the Z-axis linear module is fixed to the mounting plate, the mounting plate is located above the shell, the top of the mounting plate is fixed with the first motor, the mounting plate is provided with a stirring member, the stirring member has two stirring ends, the first motor is respectively connected to the two stirring ends through the transmission member, and the stirring end can extend through the top wall of the shell into the pipe rack.

[0010] Preferably, the stirring member includes a hollow shaft, a first bearing, a piston, a telescopic rod, blades, a spring, and an air supply portion. The first bearings are fixed on both sides of the left and right sides of the mounting plate. The hollow shaft passes through the first bearing. The piston is slidably connected to the inside of the hollow shaft. The telescopic rod and the spring are fixed to the bottom of the piston. The bottom end of the telescopic rod passes through the bottom wall of the hollow shaft and extends to the bottom of the hollow shaft where blades are fixed. The bottom end of the spring is fixed to the bottom wall of the hollow shaft. An air supply portion is provided on the upper part of the hollow shaft, and the air supply portion is connected to an external air source.

[0011] Preferably, the air supply part includes a second bearing, a sealing ring, a branch pipe, a main pipe, and a solenoid valve. The second bearing is fixed to the inner top wall of the hollow shaft. The bottom end of the branch pipe is located inside the hollow shaft and above the piston. The top end of the branch pipe passes through the second bearing and the top wall of the hollow shaft to be connected to the main pipe. A sealing ring is arranged between the branch pipe and the top wall of the hollow shaft. The branch pipe is provided with a solenoid valve, and the main pipe is connected to an external air source.

[0012] Preferably, the pipe rack includes a first leg, a first layer frame, a second layer frame, and a second leg, the first leg is fixed to the bottom wall of the shell, the first layer frame is fixed to the top of the first leg, the second leg is fixed to the top wall of the first layer frame, and the second layer frame is fixed to the top of the second leg.

[0013] Preferably, it also includes a third bearing, a gear ring, a first gear, a rotating shaft, a fourth bearing seat, a second gear, an elastic pad, and a second motor. The third bearing is fixed on the left and right sides of the first shelf and the second shelf, a fourth bearing seat is fixed at the center of the bottom wall of the first shelf, the top of the rotating shaft is inserted into the fourth bearing seat, the bottom end of the rotating shaft is fixed with a first gear, a gear ring is fixed at the bottom of the inner ring of the third bearing of the first shelf, the first gear is respectively meshed with the left and right gear rings, a second motor is fixed to the inner bottom wall of the shell, a second gear is fixed at the top of the second motor, the second gear is meshed with one of the gear rings, and an elastic pad is fixed to the inner side wall of the inner ring of the third bearing.

[0014] Preferably, the transmission member includes a driving wheel, a driven wheel, a first transmission belt, and a second transmission belt. The driving wheel is fixed to the top of the first motor, and a driven wheel is fixed to the upper part of each hollow shaft. The driving wheel and one of the driven wheels are connected by the first transmission belt, and the two driven wheels are connected by the second transmission belt.

[0015] The present invention also provides a processing method, which adopts the above-mentioned parallel concentration system for processing, including the following steps: an external device places a sample rack with sample tubes on a rack, a three-axis manipulator grabs the sample tubes from the sample rack, and then sends them to the parallel concentration component for concentration processing; after the concentration processing, the three-axis manipulator takes the sample tubes from the parallel concentration component and sends them to the mixing component for mixing processing; after the mixing processing, the three-axis manipulator takes the sample tubes from the mixing component and sends them to the single-point constant volume component for constant volume processing; after the constant volume processing, the three-axis manipulator takes the sample tubes from the single-point constant volume component and sends them to the sample rack, and the excess waste liquid from the constant volume processing enters the liquid processing component for processing.

[0016] The beneficial effects of the present invention are: 1. Through the integrated and automated parallel concentration system, automatic loading and unloading of samples, automatic vacuum parallel concentration, automatic vortexing, and automatic high-precision volume determination are realized. It has a simple structure, convenient operation, high efficiency, and high accuracy.

[0017] 2. The docking position is used to dock the sample rack with the outside to realize the automatic transfer of the sample rack and other equipment. The docking position is equipped with a sample rack identification sensor switch to determine whether there is a sample rack in place and what type of sample rack is transferred.

[0018] 3. By setting several cache sample rack positions in the cache space, samples can be temporarily stored during batch processing; positioning pins are set to cooperate with the positioning holes of the sample rack to achieve positioning of the sample rack.

[0019] 4. Two independently set vacuum extraction modules are used, one for backup and the other for use, which greatly improves the processing efficiency.

[0020] 5. Use a fixed tube rack combined with a stirring piece to ensure that the sample tube can be accurately placed and taken every time without changing the position of the tube rack.

[0021] 6. Through the first motor, the transmission member, and the setting of the stirring member with two stirring ends, sample mixing processing can be achieved simultaneously at two workstations without the need for an extra drive source, greatly improving efficiency and reducing costs.

[0022] 7. While the blades are rotating, the up and down positions of the blades can be changed to make the mixing more uniform, speed up the flow and dispersion of the sample, and improve the mixing efficiency.

[0023] 8. Compressed air is provided uniformly through the main pipe, and the air intake and exhaust volume of each hollow shaft are controlled through the branch pipe and solenoid valve. The positions of the two blades can be controlled separately to meet different operating requirements.

[0024] 9. Through the cooperation of the second bearing, the branch pipe, and the hollow shaft, it is ensured that the air can flow in and out normally during the rotation of the hollow shaft without causing entanglement in the pipeline.

[0025] 10. The elastic cushion is provided with elasticity, which not only protects the sample tube but also ensures that the sample tube is firmly fixed to the inner ring of the third bearing.

[0026] 11. On the basis of stirring and mixing by the stirring blade, the setting of the sample tube rotating in the opposite direction is combined to enhance the stirring and mixing effect, accelerate the mixing process, and further improve the mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a main structural schematic diagram of the present invention.

[0028] Figure 2 It is a three-dimensional structural schematic diagram of the rack and the identification induction switch of the present invention (with the sample rack and the sample tube placed thereon).

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the frame of the present invention.

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the parallel concentration assembly of the present invention.

[0031] Figure 5 It is a rear structural schematic diagram of the mixing assembly of the present invention.

[0032] Figure 6 It is a schematic diagram of the rear view structure of the mixing assembly of the present invention (excluding the housing).

[0033] Figure 7 It is a schematic diagram of the matching structure of the stirring member, the transmission member, the first motor, the mounting plate, and the first bearing of the present invention.

[0034] Figure 8 It is a schematic cross-sectional structural diagram of the hollow shaft of the present invention.

[0035] Fig. 9 It is a schematic diagram of the matching structure of the tube rack, the third bearing, the gear ring, the first gear, and the sample tube of the present invention.

[0036] The markings in the attached drawings are: 1-frame, 2-three-axis manipulator, 3-parallel concentration component, 4-mixing component, 5-single-point constant volume component, 6-liquid handling component, 7-docking position, 8-cache space, 9-identification sensor switch, 10-locating pin, 31-vacuum extraction module, 41-housing, 42-Y-axis linear module, 43-Z-axis linear module, 44-mounting plate, 45-first motor, 46-transmission part, 47-stirring part, 48-pipe rack, 471-hollow shaft, 472-first bearing, 473-piston, 474-telescopic rod, 475-blade, 476-spring , 477-air supply part, 4771-second bearing, 4772-sealing ring, 4773-branch pipe, 4774-main pipe, 4775-solenoid valve, 481-first leg, 482-first shelf, 483-second shelf, 484-second leg, 11-third bearing, 12-gear ring, 13-first gear, 14-rotating shaft, 15-fourth bearing seat, 16-second gear, 17-elastic cushion, 18-second motor, 461-driving wheel, 462-driven wheel, 463-first transmission belt, 464-second transmission belt, 19-sample rack, 20-sample tube. DETAILED DESCRIPTION

[0037] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0038] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] like Figures 1 to 9 As shown, a parallel concentration system provided in this embodiment includes a frame 1, and a three-axis manipulator 2, a parallel concentration component 3, a mixing component 4, a single-point constant volume component 5, and a liquid processing component 6 arranged on the frame 1, the three-axis manipulator 2 is located above the parallel concentration component 3, the mixing component 4, and the single-point constant volume component 5, the liquid processing component 6 is located below the single-point constant volume component 5, and the single-point constant volume component 5 is connected to the liquid processing component 6.

[0040] This embodiment also provides a processing method, which uses the above-mentioned parallel concentration system for processing, comprising the following steps: The external device places the sample rack 19 with the sample tube 20 on the rack 1, the three-axis manipulator 2 grabs the sample tube 20 from the sample rack 19, and then sends it to the parallel concentration component 3 for concentration processing. After the concentration processing, the three-axis manipulator 2 takes the sample tube 20 from the parallel concentration component 3 and sends it to the mixing component 4 for mixing processing. After the mixing processing, the three-axis manipulator 2 takes the sample tube 20 from the mixing component 4 and sends it to the single-point constant volume component 5 for constant volume processing. After the constant volume processing, the three-axis manipulator 2 takes the sample tube 20 from the single-point constant volume component 5 and sends it to the sample rack 19. The excess waste liquid from the constant volume processing enters the liquid processing component 6 for processing.

[0041] The present invention realizes automatic loading and unloading of samples, automatic vacuum parallel concentration, automatic vortexing, and automatic high-precision volume determination through an integrated and automated parallel concentration system, and has the advantages of simple structure, convenient operation, high efficiency, and high accuracy.

[0042] Among them, the rack 1 has a docking position 7 and a cache space 8, the docking position 7 is provided with an identification induction switch 9, and the cache space 8 has a positioning pin 10. The docking position 7 is used to dock with the external sample rack 19 to realize the automatic transfer of the sample rack 19 and the other equipment. The docking position 7 is equipped with an identification induction switch 9 of the sample rack 19, which is used to determine whether there is a sample rack 19 in place and to determine which type of sample rack 19 is transferred. The cache space 8 of this embodiment is provided with positions for five cache sample racks 19, which are used for temporary storage of samples during batch processing. The positioning pin 10 is provided to cooperate with the positioning hole of the sample rack 19 to realize the positioning of the sample rack 19.

[0043] The parallel concentration component 3 is a vacuum parallel concentrator, and has two independently arranged vacuum extraction modules 31. The two independently arranged vacuum extraction modules 31 are used, one for backup and the other for use, which greatly improves the processing efficiency.

[0044] Among them, the mixing component 4 includes a shell 41, a Y-axis linear module 42, a Z-axis linear module 43, a mounting plate 44, a first motor 45, a transmission member 46, a stirring member 47, and a pipe rack 48. The shell 41 is fixed to the frame 1, and the Y-axis linear module 42 and the pipe rack 48 are fixed to the inner bottom wall of the shell 41. The sliding end of the Y-axis linear module 42 is fixed with the Z-axis linear module 43, and the Z-axis linear module 43 passes through the top wall of the shell 41. The sliding end of the Z-axis linear module 43 is fixed with a mounting plate 44, and the mounting plate 44 is located above the shell 41. The top of the mounting plate 44 is fixed with a first motor 45. The mounting plate 44 is provided with a stirring member 47, and the stirring member 47 has two stirring ends. The first motor 45 is respectively connected to the two stirring ends through the transmission member 46, and the stirring end can pass through the top wall of the shell 41 and extend into the pipe rack 48. When mixing is required, the three-axis manipulator 2 grabs the sample tube 20 to the tube rack 48, and the Y-axis linear module 42 drives the Z-axis linear module 43 and its upper structure to move backward, so that the stirring end is located directly above the sample tube 20, and then the stirring member 47 is driven downward by the Y-axis linear module 42, so that the stirring end extends into the sample tube 20, and the first motor 45 rotates, and the stirring member 47 is driven to rotate through the transmission member 46 to stir and mix the sample in the sample tube 20. In this way, a fixed tube rack 48 is used in combination with the setting of the stirring member 47, and the position of the tube rack 48 is not changed, ensuring that the sample tube 20 can be accurately taken and placed every time. In addition, through the first motor 45, the transmission member 46, and the setting of the stirring member 47 with two stirring ends, sample mixing processing can be achieved simultaneously for two workstations without the need for an extra drive source, greatly improving efficiency and reducing costs.

[0045] The stirring member 47 includes a hollow shaft 471, a first bearing 472, a piston 473, a telescopic rod 474, a blade 475, a spring 476, and an air supply unit 477. The first bearing 472 is fixed to both sides of the mounting plate 44. The hollow shaft 471 passes through the first bearing 472. The piston 473 is slidably connected inside the hollow shaft 471. The bottom of the piston 473 is fixed with a telescopic rod 474 and a spring 476. The bottom end of the telescopic rod 474 passes through the bottom wall of the hollow shaft 471 and extends to the bottom of the hollow shaft 471. A blade 475 is fixed. The bottom end of the spring 476 is fixed to the bottom wall of the hollow shaft 471. The upper part of the hollow shaft 471 is provided with an air supply unit 477, and the air supply unit 477 is connected to an external air source. The hollow shaft 471 rotates, driving the piston 473 to rotate, and then driving the telescopic rod 474 to rotate, so that the blade 475 rotates to stir and mix the sample. In combination with the setting of the air supply unit 477, the upper and lower positions of the blades 475 can be changed while the blades 475 are rotating, so that the mixing is more uniform, the flow and dispersion of the sample are accelerated, and the mixing efficiency is improved. Specifically, when the position of the blades 475 needs to be adjusted downward, the air supply unit 477 supplies air, pushes the piston 473 to move downward, so that the telescopic rod 474 moves downward, drives the blades 475 to move downward, and the spring 476 contracts. When the position of the blades 475 needs to be adjusted upward, the air supply unit 477 withdraws air, and under the action of the spring 476, pushes the piston 473 to move upward, so that the telescopic rod 474 moves upward, and drives the blades 475 to move upward.

[0046] The air supply unit 477 includes a second bearing 4771, a sealing ring 4772, a branch pipe 4773, a main pipe 4774, and a solenoid valve 4775. The second bearing 4771 is fixed to the inner top wall of the hollow shaft 471. The bottom end of the branch pipe 4773 is located inside the hollow shaft 471 and above the piston 473. The top end of the branch pipe 4773 passes through the second bearing 4771 and the top wall of the hollow shaft 471 and is connected to the main pipe 4774. A sealing ring 4772 is provided between the branch pipe 4773 and the top wall of the hollow shaft 471. The branch pipe 4773 is provided with a solenoid valve 4775. The main pipe 4774 is connected to an external air source. Compressed air is uniformly provided through the main pipe 4774, and the air intake and exhaust volume of each hollow shaft 471 are controlled through the branch pipe 4773 and the solenoid valve 4775. The positions of the two blades 475 can be controlled separately to meet different operation requirements. The cooperation of the second bearing 4771, the branch pipe 4773 and the hollow shaft 471 ensures that the hollow shaft 471 can normally inlet and outlet air during rotation without causing entanglement of the pipeline. The sealing ring 4772 is provided to ensure sealing performance.

[0047] Among them, the pipe rack 48 includes a first leg 481, a first layer frame 482, a second layer frame 483, and a second leg 484. The first leg 481 is fixed to the bottom wall of the shell 41, the first layer frame 482 is fixed to the top of the first leg 481, the second leg 484 is fixed to the top wall of the first layer frame 482, and the second layer frame 483 is fixed to the top of the second leg 484. It also includes a third bearing 11, a gear ring 12, a first gear 13, a rotating shaft 14, a fourth bearing seat 15, a second gear 16, an elastic cushion 17 and a second motor 18. The third bearing 11 is fixed to the left and right sides of the first layer frame 482 and the second layer frame 483. The fourth bearing seat 15 is fixed to the center of the bottom wall of the first layer frame 482. The top end of the rotating shaft 14 is inserted into the fourth bearing seat 15. The first gear 13 is fixed to the bottom end of the rotating shaft 14. The bottom of the inner ring of the third bearing 11 of the first layer frame 482 is fixed with a gear ring 12. The first gear 13 is respectively engaged with the left and right gear rings 12. The second motor 18 is fixed to the inner bottom wall of the shell 41. The second gear 16 is fixed to the top of the second motor 18. The second gear 16 is engaged with one of the gear rings 12. The inner side wall of the inner ring of the third bearing 11 is fixed with an elastic cushion 17. The elastic cushion 17 is provided with elasticity, which not only protects the sample tube 20, but also ensures that the sample tube 20 is firmly fixed to the inner ring of the third bearing 11. The second motor 18 rotates, driving the second gear 16 to rotate, so that the gear ring 12 meshing with it rotates, driving the first gear 13 to rotate, and then driving another gear ring 12 to rotate. The gear ring 12 rotates and drives the inner ring of the third bearing 11 of the first shelf 482 to rotate, so that the sample tube 20 rotates. The first motor 45 and the second motor 18 of this embodiment have the same rotation direction. Through the cooperation of the second gear 16, the gear ring 12, and the first gear 13, the stirring blade and the two sample tubes 20 rotate in opposite directions. In this way, on the basis of stirring and mixing by the stirring blade, combined with the setting of the sample tube 20 rotating in the opposite direction, the stirring and mixing effect is enhanced, the mixing process is accelerated, and the mixing efficiency is further improved. Moreover, through the structural design, the normal placement and removal of the sample tube 20 is not affected, and the design is ingenious.

[0048] The transmission member 46 includes a driving wheel 461, a driven wheel 462, a first transmission belt 463, and a second transmission belt 464. The driving wheel 461 is fixed to the top of the first motor 45, and a driven wheel 462 is fixed to the upper part of each hollow shaft 471. The driving wheel 461 and one of the driven wheels 462 are connected to each other through the first transmission belt 463, and the two driven wheels 462 are connected to each other through the second transmission belt 464. During mixing, the first motor 45 rotates, driving the driving wheel 461 to rotate, driving one of the driven wheels 462 to rotate through the first transmission belt 463, and then driving the other driven wheel 462 to rotate through the second transmission belt 464, so that the stirring member 47 can achieve synchronous stirring and mixing in the same direction.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A parallel concentration system, characterized in that: It includes a frame, and a three-axis manipulator, a parallel concentration component, a mixing component, a single-point constant volume component, and a liquid processing component arranged on the frame; The three-axis manipulator is located above the parallel concentration component, the mixing component, and the single-point constant volume component; The liquid processing component is located below the single-point constant volume component; The single-point constant volume component is communicated with the liquid processing component.

2. The parallel concentration system according to claim 1, characterized in that: The rack has a docking position and a buffer space; The docking position is provided with an identification induction switch; The buffer space has a positioning pin.

3. The parallel concentration system according to claim 1, characterized in that: The parallel concentration component is a vacuum parallel concentrator and has two independently arranged vacuum extraction modules.

4. The parallel concentration system according to claim 1, characterized in that: The mixing assembly includes a housing, a Y-axis linear module, a Z-axis linear module, a mounting plate, a first motor, a transmission member, a stirring member, and a pipe rack; The housing is fixed to the frame; The inner bottom wall of the housing is fixed with a Y-axis linear module and a pipe rack, and the sliding end of the Y-axis linear module is fixed with a Z-axis linear module; The Z-axis linear module passes through the top wall of the housing; A mounting plate is fixed to the sliding end of the Z-axis linear module, and the mounting plate is located above the housing; A first motor is fixed on the top of the mounting plate; The mounting plate is provided with a stirring member, and the stirring member has two stirring ends. The first motor is respectively connected to the two stirring ends through the transmission member, and the stirring ends can extend through the top wall of the shell into the pipe rack.

5. The parallel concentration system according to claim 4, characterized in that: The stirring member comprises a hollow shaft, a first bearing, a piston, a telescopic rod, blades, a spring, and an air supply portion; First bearings are fixed on both left and right sides of the mounting plate, and the hollow shaft passes through the first bearings; A piston is slidably connected inside the hollow shaft, and a telescopic rod and a spring are fixed to the bottom of the piston; The bottom end of the telescopic rod passes through the bottom wall of the hollow shaft and extends to the bottom of the hollow shaft where a blade is fixed; The bottom end of the spring is fixed to the bottom wall of the hollow shaft; An air supply portion is disposed on the upper portion of the hollow shaft, and the air supply portion is communicated with an external air source.

6. The parallel concentration system according to claim 5, characterized in that: The air supply part includes a second bearing, a sealing ring, a branch pipe, a main pipe, and a solenoid valve; A second bearing is fixed to the inner top wall of the hollow shaft, the bottom end of the branch pipe is located inside the hollow shaft and above the piston, and the top end of the branch pipe passes through the second bearing and the top wall of the hollow shaft to communicate with the main pipe; A sealing ring is provided between the branch pipe and the top wall of the hollow shaft; The branch pipe is provided with a solenoid valve, and the main pipe is connected with an external gas source.

7. The parallel concentration system according to claim 4, characterized in that: The pipe rack includes a first leg, a first frame, a second frame, and a second leg; A first leg is fixed to the inner bottom wall of the shell, a first shelf is fixed to the top of the first leg, a second leg is fixed to the top wall of the first shelf, and a second shelf is fixed to the top of the second leg.

8. The parallel concentration system according to claim 7, characterized in that: It also includes a third bearing, a gear ring, a first gear, a rotating shaft, a fourth bearing seat, a second gear, an elastic cushion, and a second motor; The third bearings are fixed on both the left and right sides of the first and second shelves; A fourth bearing seat is fixed at the center of the bottom wall of the first shelf, the top end of the rotating shaft is inserted into the fourth bearing seat, and a first gear is fixed at the bottom end of the rotating shaft; A gear ring is fixed at the bottom of the inner ring of the third bearing of the first shelf, and the first gear is meshed with the left and right gear rings respectively; A second motor is fixed to the inner bottom wall of the housing, a second gear is fixed to the top of the second motor, and the second gear is meshed with one of the gear rings; An elastic cushion is fixed to the inner side wall of the inner ring of the third bearing.

9. The parallel concentration system according to claim 5, characterized in that: The transmission member includes a driving wheel, a driven wheel, a first transmission belt, and a second transmission belt; A driving wheel is fixed on the top of the first motor, a driven wheel is fixed on the upper part of each hollow shaft, the driving wheel is connected to one of the driven wheels through a first transmission belt, and the two driven wheels are connected through a second transmission belt.

10. A processing method, characterized in that: The process is carried out using the parallel concentration system according to any one of claims 1 to 9, comprising the following steps: The external equipment places the sample rack with sample tubes on the rack, and the three-axis manipulator grabs the sample tubes from the sample rack and sends them to the parallel concentration component for concentration processing. After the concentration processing, the three-axis manipulator takes the sample tubes from the parallel concentration component and sends them to the mixing component for mixing processing. After the mixing processing, the three-axis manipulator takes the sample tubes from the mixing component and sends them to the single-point constant volume component for constant volume processing. After the constant volume processing, the three-axis manipulator takes the sample tubes from the single-point constant volume component and sends them to the sample rack. The excess waste liquid from the constant volume processing enters the liquid processing component for processing.

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