Intelligent equipment system for gas chromatography experiment

Abstract

The invention relates to the technical field of gas chromatography experiment automation equipment, and provides an intelligent equipment system for a gas chromatography experiment, which comprises a special liquid preparation machine, a special sample preparation machine, a special uniform shaking machine, a special centrifugation machine, a special extraction and filtration machine and a robot, the intervention of the transfer robot ensures that the material arrives at each station on time, and equipment idling caused by waiting for the material is avoided. An experimenter only needs to complete initial loading and parameter setting, and the system can complete the remaining procedures independently. Through cooperative work of a special liquid preparation machine, a special sample preparation machine, a special uniform shaking machine, a special centrifugal machine, a special extraction and filtration machine and a robot, full-process automatic operation from sample preparation to gas chromatography experiment is realized, manual intervention is reduced, the experiment efficiency and data consistency are improved, and the experiment cost is reduced. The method has the advantages of improving the experiment efficiency, reducing manual intervention and realizing a standardized operation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas chromatography experiment automation equipment, and particularly to an intelligent equipment system for gas chromatography experiment. BACKGROUND

[0002] When the current laboratory carries out gas chromatography detection of a solution, all operation processes are completed by manual operation. The experimental personnel need to sequentially perform a series of operation steps such as sampling, sample preparation, metering, weighing, centrifugation, precipitation, shaking, filtering, and liquid taking. These operations are not only tedious, but also have strict timeliness requirements for each experimental link, and a single processing process often takes several minutes to several hours. This working mode causes the experimental personnel to have to be on standby at any time, resulting in a serious waste of human resources. Especially in the case of 24-hour continuous testing, the experimental personnel have to work overtime, which is a heavy burden on the already manpower-tight laboratory environment. In addition, manual operation also has problems such as non-uniform operation standards and poor repeatability of experimental data. The traditional manual operation mode has been difficult to meet the needs of modern laboratories for detection efficiency, data accuracy, and optimal allocation of human resources. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides an intelligent equipment system for gas chromatography experiment, which aims to improve experimental efficiency, reduce manual intervention, and realize a standardized operation process.

[0004] The intelligent equipment system for gas chromatography experiment according to an embodiment of the present application comprises: a liquid preparation special machine, the liquid preparation special machine comprising a peristaltic pump, a liquid preparation assembly, a test tube, and at least two solution bottles, the peristaltic pump being connected to the solution bottles and the liquid preparation assembly respectively, each of the solution bottles being used to store one of a similar marker and a solvent, the test tube being placed on the liquid preparation assembly, and the liquid preparation assembly being used to inject the similar marker and the solvent into the test tube; a sample preparation special machine, the sample preparation special machine comprising a liquid preparation machine, a first syringe, and a weighing table, the liquid preparation machine being located downstream of the work of the liquid preparation special machine, the first syringe being placed in the liquid preparation machine, the first syringe containing a sample, and the weighing table being used to place the test tube, the liquid preparation machine being used to transfer the first syringe above the weighing table to inject the sample into the test tube; a shaking special machine, the shaking special machine being located downstream of the work of the sample preparation special machine, the shaking special machine being used to place the test tube and perform shaking operation; a centrifugation special machine, the centrifugation special machine being located downstream of the work of the sample preparation special machine, the centrifugation special machine being used to place the test tube and perform centrifugation operation; A liquid extraction and filtration machine is located downstream of the centrifuge and is used to place the test tubes and perform liquid aspiration and sampling operations. A robot is movably positioned between the liquid preparation machine, the sample preparation machine, the mixing machine, the centrifugation machine, and the extraction and filtration machine. The robot is used to transfer the test tube and the first syringe.

[0005] The intelligent equipment system for gas chromatography experiments according to embodiments of the present invention achieves fully automated operation from solution preparation to sampling through the coordinated work of a dedicated liquid preparation machine, a dedicated sample preparation machine, a dedicated shaking machine, a dedicated centrifuge machine, a dedicated extraction and filtration machine, and a robot. This reduces manual intervention, improves experimental efficiency and data consistency, and has the advantages of improving experimental efficiency, reducing manual intervention, and achieving standardized operating procedures.

[0006] According to one embodiment of the present invention, the solution preparation assembly includes: The injection tube is connected to the output end of the peristaltic pump; The first slide rail is located below the injection tube; The test tube is placed on the injection stage, which is slidably mounted on the first slide rail. The injection stage is adapted to slide below the injection tube so that the test tube is opposite to the injection tube.

[0007] According to one embodiment of the present invention, the liquid preparation machine includes a plurality of peristaltic pumps, a plurality of solution bottles and a plurality of liquid preparation components, wherein each peristaltic pump, solution bottle and liquid preparation component is provided in a one-to-one correspondence.

[0008] According to one embodiment of the present invention, the liquid dispensing machine includes: A support is provided adjacent to the weighing platform and is used to place the first syringe. The second slide rail extends in a direction parallel to the line connecting the support and the weighing platform. A gripping component is slidably disposed on the second slide rail. The gripping component is adapted to grip the first syringe on the support and transfer the first syringe along the second slide rail to above the weighing platform, so that the first syringe is opposite the test tube on the weighing platform.

[0009] According to one embodiment of the present invention, the dispensing machine further includes a pusher head movably disposed on the gripping assembly, the pusher head being adapted to approach or move away from the first syringe to inject the sample in the first syringe into a test tube on the weighing platform.

[0010] According to an embodiment of the present application, the mixing machine comprises: a direct current motor; an eccentric shaft arranged at the output end of the direct current motor; a tube rack arranged at the eccentric shaft, and the test tube is placed on the tube rack.

[0011] According to an embodiment of the present application, the mixing machine further comprises a bottle plug arranged beside the direct current motor, and the bottle plug is sealed to the test tube mouth under the transfer of the robot.

[0012] According to an embodiment of the present application, the centrifugal machine comprises: a box body provided with a receiving groove; a box cover movably connected with the box body, and the box cover is used for opening or covering the receiving groove; a driving cylinder connected with the box cover and used for driving the box cover to move relative to the box body to open or cover the receiving groove; a rotating disc rotatably arranged in the receiving groove; an encoder arranged on the rotating disc.

[0013] According to an embodiment of the present application, the extraction and filtration machine comprises: a first tube seat used for placing the test tube; a first transfer track arranged beside the first tube seat; a liquid suction machine movably arranged on the first transfer track; a transfer slide rail arranged adjacent to one end of the first transfer track; a transfer table movably arranged on the transfer slide rail, and the transfer table is used for placing the test tube; a second syringe, the liquid suction machine is adapted to grab the second syringe and extract the solution in the test tube, and the second syringe is adapted to be placed on the transfer table under the transfer of the liquid suction machine; a second transfer track, and the extending direction of the second transfer track is parallel to the extending direction of the first transfer track; a liquid injection machine movably arranged on the second transfer track, and the transfer table is adapted to move from the end corresponding to the first transfer track to the end corresponding to the second transfer track, and the liquid injection machine is adapted to grab the second syringe on the transfer table; a second tube seat used for placing a detection tube, and the liquid injection machine is adapted to inject the liquid in the second syringe into the detection tube.

[0014] According to one embodiment of the present application, the extraction and filtration special machine further comprises an injection support and a needle clamping component, the second syringe is placed on the injection support, the injection support is arranged at one end of the first transfer track, the needle clamping component is arranged at the other end of the first transfer track, the liquid suction machine is adapted to pick up the second syringe on the injection support and transfer to the needle clamping component, and the needle clamping component is adapted to clamp the needle of the second syringe to remove the needle. And / or, the extraction and filtration special machine further comprises a filter, which is arranged on the second tube seat and above the detection tube, and is used to be sleeved on the liquid outlet of the second syringe.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a structural schematic diagram of the intelligent equipment system for gas chromatography experiment provided by the embodiment of the present application.

[0018] Figure 2 It is a structural schematic diagram of the liquid preparation special machine provided by the embodiment of the present application.

[0019] Figure 3 It is a structural schematic diagram of the sample preparation special machine provided by the embodiment of the present application.

[0020] Figure 4 It is a structural schematic diagram of the shaking special machine provided by the embodiment of the present application.

[0021] Figure 5 It is a structural schematic diagram of the extraction and filtration special machine provided by the embodiment of the present application.

[0022] Reference signs: 1, liquid preparation machine; 11, peristaltic pump; 12, liquid preparation assembly; 121, liquid injection pipe; 122, first sliding rail; 123, liquid injection table; 13, test tube; 14, solution bottle; 2, shaking machine; 21, DC motor; 22, eccentric shaft; 23, pipe rack; 24, bottle plug; 3, sample preparation machine; 31, liquid preparation machine; 311, support; 312, second sliding rail; 313, grabbing assembly; 314, push head; 32, first syringe; 33, weighing table; 4, centrifuge machine; 41, box body; 42, box cover; 43, driving cylinder; 5, extraction and filtration machine; 51, first pipe seat; 52, first transfer track; 53, liquid suction machine; 54, transfer sliding rail; 55, transfer table; 56, second syringe; 57, second transfer track; 58, liquid injection machine; 59, second pipe seat; 591, detection tube; 510, injection support; 511, needle clamping part. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0024] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature can be "under", "below" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0027] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0028] In the prior art, the gas chromatography detection process has long relied on manual operation, and the experimental personnel need to manually complete more than ten processes such as sampling, sample preparation, centrifugation, etc. Especially in the continuous detection scene, the operator needs to be on duty throughout the process to deal with the process connection between each step, resulting in low utilization of human resources.

[0029] Therefore, as Figure 1 shown, the present application proposes a gas chromatography experimental system including a liquid preparation special machine 1, a sample preparation special machine 3, a shaking special machine 2, a centrifugal special machine 4, a extraction and filtration special machine 5, and a transfer robot. The liquid preparation special machine 1 connects the solution bottle 14 and the liquid preparation assembly 12 through the peristaltic pump 11 to realize the quantitative mixing of the standard substance and the solvent. The sample preparation special machine 3 is configured with a weighing table 33 and a transferable first syringe 32 to complete accurate sample addition. The shaking special machine 2 receives the test tube 13 after sample preparation to perform shaking treatment. The centrifugal special machine 4 separates and processes the mixed sample. The extraction and filtration special machine 5 performs the final sampling operation. The transfer robot transfers the test tube 13 and the syringe between the special machines along the preset path.

[0030] The peristaltic pump 11 refers to a device for realizing liquid delivery by rolling wheels extruding a hose. Specifically, a structure of a stepping motor driving a rolling wheel set can be adopted to adjust the liquid flow by controlling the motor speed. The liquid preparation assembly 12 refers to a positioning mechanism for carrying the test tube 13. Specifically, a moving platform with a sliding rail can be adopted to accurately align the test tube 13 with the liquid injection pipe 121. The weighing table 33 refers to a carrying device with a mass detection function. Specifically, an electromagnetic force balance sensor can be adopted to monitor the weight change of the test tube 13 in real time. The transfer robot refers to a multi-axis mechanical arm device. Specifically, a six-degree-of-freedom joint type mechanical hand can be adopted, and a vacuum suction cup and a clamp are arranged at the end to realize the grabbing and conversion of different materials. It should be noted that the downstream of the work refers to the downstream step of the robot operation process, and is not limited to the specific installation position. The specific installation position can be adjusted according to the movement path of the robot.

[0031] Specifically, the liquid preparation special machine 1 delivers the labeled substance and the solvent in the solution bottle 14 to the test tube 13 in a certain proportion through the peristaltic pump 11, and the sliding rail type liquid preparation assembly 12 ensures the accurate alignment of the liquid injection pipe 121 and the test tube 13. The test tube 13 after completing the liquid preparation is transferred to the sample preparation special machine 3 by the robot, the liquid preparation machine 31 grabs the first syringe 32 preloaded with the sample and moves above the weighing table 33, and the sample injection amount is controlled according to the weight feedback. The test tube 13 after completing the injection is transferred to the shaking special machine 2 by the robot, and three-dimensional shaking is generated by driving the eccentric wheel. The test tube 13 after shaking is transferred to the centrifugal special machine 4 by the robot for solid-liquid separation, and finally the supernatant extraction and filtration are completed by the extraction and filtration special machine 5. The special machines can be arranged in a straight line, the robot circulates along the fixed path to form a closed material flow transfer channel.

[0032] Through the above technical solution, the full-process automatic operation of gas chromatographic detection is realized, and the interval between processes caused by manual operation is eliminated. The modular design of each special machine allows parallel operation, for example, when the liquid preparation special machine 1 is preparing the next batch of liquid, the shaking special machine 2 can simultaneously process the current batch of test tubes 13. The intervention of the transfer robot ensures that the materials arrive at each station on time, avoiding idle equipment caused by waiting for materials. The experimenter only needs to complete the initial loading and parameter setting, and the system can automatically complete the remaining processes.

[0033] The liquid preparation assembly 12 includes a liquid injection pipe 121, a first sliding rail 122, and a liquid injection table 123. The liquid injection pipe 121 is connected with the output end of the peristaltic pump 11. The first sliding rail 122 is arranged below the liquid injection pipe 121. The test tube 13 is placed on the liquid injection table 123. The liquid injection table 123 is slidably arranged on the first sliding rail 122, and the liquid injection table 123 is adapted to slide to the lower side of the liquid injection pipe 121, so that the test tube 13 is opposite to the liquid injection pipe 121.

[0034] The injection tube 121 is a liquid delivery channel connected to the peristaltic pump 11, used to directionally deliver the solution from the output end of the peristaltic pump 11 into the test tube 13. The first slide rail 122 is a guide structure that supports the movement of the injection platform 123; it can be implemented using a linear guide rail or a ball bearing slide rail, used to define the movement path of the injection platform 123 and ensure its sliding accuracy. The injection platform 123 is a positioning platform that supports the test tube 13; it can be implemented using a movable base with a slot for the test tube 13, used to fix the position of the test tube 13 and adjust its relative position to the injection tube 121 under the drive of the slide rail.

[0035] Specifically, the peristaltic pump 11 delivers a measured amount of liquid from the solution bottle 14 to the outlet of the injection tube 121 via the injection tube 121. The injection platform 123 moves along the first slide rail 122 to a position directly below the injection tube 121, ensuring that the opening of the test tube 13 is vertically aligned with the injection tube 121. Once the injection platform 123 is in position, the peristaltic pump 11 starts and injects a preset volume of solution into the test tube 13. After injection, the injection platform 123 moves out of the injection area along the slide rail, facilitating the robot to transfer the test tube 13 to the next process. The closed connection between the injection tube 121 and the peristaltic pump 11 prevents evaporation or contamination during solution delivery. The linear guiding mechanism of the first slide rail 122 eliminates positional deviations caused by manual placement of the test tube 13. The sliding positioning function of the injection platform 123 enables continuous automated injection of multiple test tubes 13.

[0036] Through the above technical solutions, this application realizes the automated and precise preparation of standard substances and solvents. The vertical alignment structure of the injection tube 121 and the test tube 13 ensures the stability of the solution injection path. The positioning mechanism of the slide rail driven injection stage 123 improves the switching efficiency of the test tube 13 station. The closed liquid delivery system reduces the risk of solution contamination, thereby significantly improving the operational accuracy and process continuity of the preparation process.

[0037] Please refer to the reference. Figure 1 and Figure 2 This application further proposes a liquid preparation machine 1 including multiple peristaltic pumps 11, multiple solution bottles 14 and multiple liquid preparation components 12, with each peristaltic pump 11, solution bottle 14 and liquid preparation component 12 being set up in a one-to-one correspondence.

[0038] Specifically, multiple independently configured peristaltic pumps 11 are connected to corresponding solution bottles 14. Each peristaltic pump 11 independently controls the extraction of a specific solution. For example, three solution bottles 14 contain a standard substance, and five solution bottles 14 contain a solvent. The solution preparation assembly 12 corresponds one-to-one with the peristaltic pumps 11, so that each solution channel has a dedicated injection tube 121 and a movable injection stage 123. When mixing multiple solutions, different solutions are extracted by their respective peristaltic pumps 11 and injected into test tubes 13 located at different injection stages 123 along the independent injection tubes 121. For example, one injection stage 123 is used for injecting the standard substance, while another injection stage 123 is used for injecting the solvent. The test tubes 13 can be transferred to different injection stages 123 by a robot, thereby achieving the mixing of solvent and standard substance.

[0039] Through the above technical solution, this application realizes the parallel processing of multi-solution mixing operations, effectively reducing the frequency of manual intervention, improving the efficiency of solution preparation, and avoiding the problem of cross-contamination of solutions, thus providing high-purity mixed samples for subsequent automated processes.

[0040] like Figure 3 As shown, this application further proposes a liquid preparation machine 31 including a support 311, a second slide rail 312, and a gripping assembly 313. The support 311 is disposed adjacent to the weighing platform 33 and is used to place the first syringe 32; the extension direction of the second slide rail 312 is parallel to the line connecting the support 311 and the weighing platform 33; the gripping assembly 313 is slidably disposed on the second slide rail 312 and is used to grip the first syringe 32 on the support 311 and transfer the first syringe 32 along the second slide rail 312 to the top of the weighing platform 33, so that the first syringe 32 is opposite to the test tube 13 on the weighing platform 33.

[0041] The support 311 is a fixed base for supporting the first syringe 32. Its adjacent arrangement with the weighing platform 33 shortens the transfer path of the first syringe 32. The second slide rail 312 is a linear track that guides the movement of the gripping component 313. Specifically, it can be implemented using a transmission mechanism combining a ball screw and a servo motor. Its extension direction is parallel to the line connecting the support 311 and the weighing platform 33, ensuring that the syringe transfer trajectory completely coincides with the target path. The gripping component 313 is a mechanical device that performs the clamping operation. Specifically, it can be implemented using a structure that combines a pneumatic gripper and a pressure sensor. The precise displacement of the syringe between the support 311 and the weighing platform 33 is achieved through sliding control.

[0042] Specifically, when the first syringe 32 is placed on the support 311, the gripping component 313 slides along the second slide rail 312 to the position of the support 311, and fixes the first syringe 32 by the clamping mechanism. Then, the gripping component 313 carries the first syringe 32 and moves linearly along the second slide rail 312 to a predetermined coordinate point above the weighing platform 33, ensuring that the needle of the first syringe 32 is precisely aligned with the opening of the test tube 13. Because the extension direction of the second slide rail 312 is strictly parallel to the line connecting the support 311 and the weighing platform 33, no lateral deviation occurs during the movement, ensuring that the syringe maintains a linear trajectory throughout the transfer path. This process completely replaces manual operation, eliminating positioning errors caused by robot transfer.

[0043] Through the above technical solution, this application effectively solves the problems of low transfer efficiency and poor positioning accuracy of the first syringe 32 during sample preparation. The automated gripping component 313 and the directional slide rail system can quickly complete the gripping, transfer, and alignment operations of the first syringe 32, ensuring that the sample injection process is executed completely according to the predetermined coordinates, while realizing continuous operation capability and meeting the needs of high-throughput experiments.

[0044] This application further proposes that the liquid preparation machine 31 also includes a pusher 314, which is movably disposed on the gripping assembly 313 and is adapted to approach or move away from the first syringe 32 to inject the sample in the first syringe 32 into the test tube 13 on the weighing platform 33.

[0045] The pusher 314 is a mechanical component that can move axially along the gripping assembly 313. It can be driven by a linear motor or a pneumatic pusher and is used to contact and push the piston rod of the first syringe 32 to complete the sample ejection action. This component precisely controls the displacement to achieve accurate adjustment of the injection volume, avoiding sample residue or over-injection caused by uneven manual injection force. The gripping assembly 313 is a clamping mechanism mounted on the second slide rail 312, used to fix the first syringe 32 and transfer it along the slide rail to the weighing platform 33. This assembly ensures the vertical alignment of the syringe needle with the opening of the test tube 13 through slide rail positioning, eliminating positional deviations during manual operation.

[0046] Specifically, after the gripping assembly 313 transfers the first syringe 32 above the weighing platform 33, the pusher head 314 moves along the axial path of the gripping assembly 313 towards the first syringe 32 until it contacts the piston rod of the first syringe 32. The pusher head 314 continuously applies a linear thrust to press down the piston rod, injecting the sample into the test tube 13 through the needle. After the injection is completed, the pusher head 314 moves in the reverse direction to reset, and the gripping assembly 313 transfers the first syringe 32 back to its original position.

[0047] like Figure 4As shown, this application further proposes a shaking machine 2 including a DC motor 21, an eccentric shaft 22 and a tube rack 23. The eccentric shaft 22 is located at the output end of the DC motor 21, and the tube rack 23 is located on the eccentric shaft 22 for placing test tubes 13.

[0048] The DC motor 21 is the driving component that serves as the power source. Specifically, it can be a brushless DC motor 21 with speed control. The rotational speed is controlled by adjusting the input voltage or pulse signal, thereby changing the vibration frequency to adapt to the mixing requirements of different solutions. The eccentric shaft 22 is a rotating shaft with an asymmetrical mass distribution. Specifically, it can be implemented using a structure with an eccentric block at the end of the shaft. When the shaft rotates, it generates periodic centrifugal force, converting the rotational motion of the motor into the reciprocating vibration of the tube frame 23. The tube frame 23 is a rigid support structure that supports the test tubes 13. Specifically, it can be implemented using a metal frame with spring clamping grooves. Multi-point fixing ensures that the test tubes 13 do not shift during vibration, while maintaining a preset angle between the axis of the test tubes 13 and the vibration direction.

[0049] Specifically, when the DC motor 21 is powered on, the output shaft drives the eccentric shaft 22 to rotate at high speed. By adjusting the motor speed, the low-viscosity solution is quickly mixed through high-frequency small-amplitude vibration, while the high-viscosity solution avoids the generation of bubbles through low-frequency large-amplitude vibration.

[0050] Through the above technical solution, this application realizes the automated mixing operation of the solution in test tube 13, eliminating individual differences caused by manual operation. The device can be directly connected to an automated production line to complete the continuous shaking and mixing of batches of test tubes 13 without human intervention.

[0051] Please refer to the reference. Figure 1 and Figure 4 This application further proposes that the shaking machine 2 also includes a stopper 24, which is placed next to the DC motor 21 and is sealed at the mouth of the test tube 13 by the robot.

[0052] The stopper 24 is a sealing component used to seal the opening of the test tube 13. It can be made of rubber or silicone and its shape is adapted to the size of the test tube 13 opening to achieve an airtight seal. The location beside the DC motor 21 means that the storage area of ​​the stopper 24 and the drive mechanism of the DC motor 21 are on the same plane. This can be achieved using a fixed bracket or tray to minimize the movement path when the robot performs its grasping action. The robot's transfer refers to the gripping, positioning, and releasing of the stopper 24 using the end effector of the robotic arm. This can be achieved using a pneumatic gripper or an electromagnetic adsorption device for precise grasping, and the stopper 24 is transferred to a position directly above the opening of the test tube 13 according to a preset motion trajectory.

[0053] Specifically, during the shaking process, test tube 13 needs to be sealed to prevent solution spillage. A stopper 24 is pre-positioned at a fixed location next to the DC motor 21. The robot moves to this location according to control commands, picks up the stopper 24, and then transfers it to the opening of test tube 13 where the shaking process will take place, sealing the tube by pressing it down vertically. By using a robot to perform the sealing action, replacing traditional manual operation, the robot ensures that test tube 13 remains sealed during the shaking process, preventing interruptions to the experimental procedure.

[0054] Through the above technical solution, this application solves the problem of process interruption caused by the need for manual sealing of the 13 ports of the test tube during shaking, and improves the continuity and reliability of the experimental process.

[0055] like Figure 1 As shown, this application further proposes a centrifuge 4 including a housing 41, a cover 42, a drive cylinder 43, a turntable, and an encoder. The housing 41 is provided with a receiving groove, the cover 42 is movably connected to the housing 41, the drive cylinder 43 is connected to the cover 42 to drive it to open and close the receiving groove, the turntable is rotatably disposed in the receiving groove, and the encoder is disposed on the turntable.

[0056] The enclosure 41 is a shell structure that forms a closed space for centrifugation operations. It can be made of metal or engineering plastic, and its receiving slots are used to hold the turntable and test tubes 13. The cover 42 is an opening and closing component that cooperates with the enclosure 41. It can be connected by hinges or slide rails and is used to seal the receiving slots to prevent liquid splashing during centrifugation. The drive cylinder 43 is a power device that drives the cover 42. It can be a pneumatic transmission mechanism that automatically opens and closes the cover 42 through a linear push-pull action. The turntable is a rotating component that carries the test tubes 13. It can be driven by a motor to rotate around an axis, and its surface can be provided with slots to fix the test tubes 13. The encoder is a sensor that monitors the rotation parameters of the turntable. It can be a photoelectric or magnetoelectric encoder used to record the number of rotations and angular position of the turntable in real time.

[0057] Specifically, after the robot places test tube 13 onto the turntable, the drive cylinder 43 pushes the lid 42 to close the receiving slot, and the turntable begins to rotate under the drive of the motor. The encoder continuously monitors the number of rotations and angular position of the turntable and transmits the data to the control system. After centrifugation, the drive cylinder 43 automatically opens the lid 42, and the robot accurately positions test tube 13 based on the turntable position information recorded by the encoder. The sealing structure of the chamber 41 and the lid 42 avoids safety hazards during manual operation, the coordinated action of the encoder and the turntable achieves closed-loop control of centrifugation parameters, and the automated opening and closing of the drive cylinder 43 replaces manual intervention.

[0058] Through the above technical solution, this application achieves fully automated control of the centrifugation process, solving the problems of low efficiency and uncontrollable parameters in manual operation. The mechanical drive of the lid 42 replaces manual opening and closing actions, the data feedback from the encoder ensures the accurate execution of centrifugation parameters, the closed structure of the turntable and the box 41 avoids operational risks, and the robot can accurately position the test tube 13 based on the encoder data, thus forming a complete automated centrifugation process.

[0059] like Figure 5 As shown, this application further proposes an extraction and filtration machine 5 including a first tube seat 51, a first transfer track 52, a liquid suction machine 53, a transfer slide rail 54, a transfer table 55, a second syringe 56, a second transfer track 57, a liquid injection machine 58, and a second tube seat 59. The first tube holder 51 is used to place the test tube 13; the first transfer track 52 is located beside the first tube holder 51; the liquid aspirator 53 is movably located on the first transfer track 52; the transfer slide rail 54 is located near one end of the first transfer track 52; the transfer platform 55 is movably located on the transfer slide rail 54 and is used to place the test tube 13; the liquid aspirator 53 grabs the second syringe 56 and draws the solution from the test tube 13 and transfers it to the transfer platform 55; the second transfer track 57 extends parallel to the first transfer track 52; the liquid injection machine 58 is movably located on the second transfer track 57 and grabs the second syringe 56 on the transfer platform 55; the second tube holder 59 is used to place the test tube 591, and the liquid injection machine 58 injects the liquid in the second syringe 56 into the test tube 591.

[0060] The first tube holder 51 refers to the support structure for fixing the test tube 13, which can be implemented using a metal frame with positioning slots. Its function is to provide stable positioning for the test tube 13 during liquid aspiration. The first transfer track 52 refers to the linear motion guide device, which can be implemented using a ball screw slide. Its function is to provide a horizontal movement path for the liquid aspiration machine 53 to achieve multi-station operation. The intermediate transfer slide 54 refers to the conveying mechanism parallel to the first transfer track 52, which can be implemented using a screw drive platform. Its function is to transfer the second syringe 56, which has completed liquid aspiration, to the liquid injection station. The second syringe 56 refers to the liquid transfer container with a needle, which is used to seal and transfer the extracted solution to avoid contamination. The second tube holder 59 refers to the fixing bracket for the detection tube 591 with positioning holes, which can be made of corrosion-resistant plastic. Its function is to provide standardized positioning for the detection tube 591 for final liquid injection.

[0061] Specifically, test tube 13 is fixed in the positioning slot of the first tube seat 51. The aspirator 53 moves along the first transfer track 52 to the location of the second syringe 56, picks up the second syringe 56, and returns to the position of test tube 13. After the needle is inserted into the liquid in test tube 13, the piston of the second syringe 56 is mechanically driven to draw a set volume of solution. The aspirated second syringe 56 is transferred to the transfer platform 55, which moves along the transfer slide rail 54 to the side of the second transfer track 57. The injector 58 moves along the second transfer track 57 to the position of the transfer platform 55, picks up the second syringe 56, and moves above the second tube seat 59. The detection tube 591 is precisely placed in the positioning hole of the second tube seat 59. After the second syringe 56 is inserted into the detection tube 591, the piston is pushed to complete the liquid injection. Throughout the process, the first transfer track 52 and the second transfer track 57 are arranged in parallel to form a dual working channel. The transfer slide rail 54 serves as an intermediate conveyor belt to facilitate the transfer of materials between different processes; the second syringe 56 serves as an independent carrier to prevent cross-contamination of liquids during the transfer process.

[0062] Through the above technical solution, this application achieves fully automated operation of the liquid aspiration and sampling process. The liquid aspiration machine 53 and the liquid injection machine 58 operate synchronously on independent tracks, allowing the processing of test tubes 13 in the preceding process and the liquid injection of test tubes 591 in the subsequent process to be carried out simultaneously, thereby improving equipment utilization. The setting of the transfer station 55 solves the problem of timing matching of material transfer between different processes, ensuring that there is no interruption or waiting in the continuous production process.

[0063] This application further proposes that the extraction and filtration machine 5 also includes an injection holder 510 and a needle-clamping component 511. The second syringe 56 is placed on the injection holder 510, which is set at one end of the first transfer track 52. The needle-clamping component 511 is set at the other end of the first transfer track 52. The liquid aspirator 53 is adapted to grab the second syringe 56 on the injection holder 510 and transfer it to the needle-clamping component 511. The needle-clamping component 511 is adapted to clamp the needle of the second syringe 56 to remove the needle.

[0064] The injection support 510 is a support structure used to fix the second syringe 56. Specifically, it can be implemented using a metal support with a positioning groove or clamping mechanism. It is located at the beginning of the first transfer track 52 to ensure accurate positioning when the aspirator 53 grasps the second syringe 56. The needle clamping component 511 is a mechanical device used to fix and separate the needle tip. Specifically, it can be implemented using a metal block with elastic claws or grooves. It is located at the end of the first transfer track 52 and generates a reverse force through mechanical clamping, causing the needle tip to separate from the syringe.

[0065] Specifically, the aspirator 53 moves along the first transfer track 52 to the injection holder 510 to grasp the second syringe 56, then transfers it to the first tube seat 51 to draw the solution from the test tube 13. After completing the aspiration, it continues to move along the track to the location of the needle-clamping component 511. The needle-clamping component 511 holds the needle tip with elastic claws. As the aspirator 53 continues to move, it generates a reverse pulling force, fixing the needle tip to the claws and disengaging it from the syringe. This process requires no manual intervention; the needle tip removal is automated through track positioning and mechanical clamping.

[0066] Through the above technical solution, this application realizes the automated removal of needles during liquid aspiration and sampling in gas chromatography experiments, solving the problems of low efficiency and safety hazards of manual operation, ensuring the accuracy and repeatability of needle separation action, and reducing the risk of liquid contamination during the experiment.

[0067] In one embodiment, the extraction and filtration machine 5 further includes a filter element disposed on the second tube seat 59 and located above the detection tube 591. The filter element is used to fit over the outlet of the second syringe 56. Understandably, when the aspirator 53 picks up the second syringe 56 and transfers it above the detection tube 591, the aspirator 53 drives the outlet of the second syringe 56 to be inserted into the filter element. The liquid in the second syringe 56 is then injected into the detection tube 591 after being filtered by the filter element, thus achieving the filtration operation. Understandably, the robot places the detection tube 591 into the gas chromatograph for detection, completing the entire process.

[0068] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. An intelligent equipment system for gas chromatography experiments, characterized in that, include: A solution preparation machine includes a peristaltic pump, a solution preparation assembly, test tubes, and at least two solution bottles. The peristaltic pump is connected to the solution bottles and the solution preparation assembly respectively. Each solution bottle is used to store one of a standard substance and a solvent. The test tubes are placed on the solution preparation assembly, which is used to inject the standard substance and the solvent into the test tubes. A sample preparation machine includes a liquid preparation machine, a first syringe, and a weighing platform. The liquid preparation machine is located downstream of the liquid preparation machine. The first syringe is placed in the liquid preparation machine and contains a sample. The weighing platform is used to place the test tube. The liquid preparation machine is used to transfer the first syringe above the weighing platform to inject the sample into the test tube. A shaking machine is located downstream of the sample preparation machine and is used to place the test tubes and perform a shaking operation. A centrifuge is located downstream of the sample preparation machine and is used to place the test tubes and perform centrifugation. A liquid extraction and filtration machine is located downstream of the centrifuge and is used to place the test tubes and perform liquid aspiration and sampling operations. A robot is movably positioned between the liquid preparation machine, the mixing machine, the sample preparation machine, the centrifugation machine, and the extraction and filtration machine. The robot is used to transfer the test tube and the first syringe.

2. The intelligent equipment system for gas chromatography experiments according to claim 1, characterized in that, The solution preparation assembly includes: The injection tube is connected to the output end of the peristaltic pump; The first slide rail is located below the injection tube; The test tube is placed on the injection stage, which is slidably mounted on the first slide rail. The injection stage is adapted to slide below the injection tube so that the test tube is opposite to the injection tube.

3. The intelligent equipment system for gas chromatography experiments according to claim 2, characterized in that, The solution preparation machine includes multiple peristaltic pumps, multiple solution bottles, and multiple solution preparation components, with each peristaltic pump, solution bottle, and solution preparation component being configured in a one-to-one correspondence.

4. The intelligent equipment system for gas chromatography experiments according to claim 1, characterized in that, The liquid preparation machine includes: A support is provided adjacent to the weighing platform and is used to place the first syringe. The second slide rail extends in a direction parallel to the line connecting the support and the weighing platform. A gripping component is slidably disposed on the second slide rail. The gripping component is adapted to grip the first syringe on the support and transfer the first syringe along the second slide rail to above the weighing platform, so that the first syringe is opposite the test tube on the weighing platform.

5. The intelligent equipment system for gas chromatography experiments according to claim 4, characterized in that, The dispensing machine also includes a pusher head movably disposed on the gripping assembly, the pusher head being adapted to approach or move away from the first syringe to inject the sample in the first syringe into a test tube on the weighing platform.

6. The intelligent equipment system for gas chromatography experiments according to claim 1, characterized in that, The special shaking machine includes: DC motor; An eccentric shaft is provided at the output end of the DC motor; A tube rack is provided on the eccentric shaft, and the test tubes are placed on the tube rack.

7. The intelligent equipment system for gas chromatography experiments according to claim 6, characterized in that, The shaking machine also includes a bottle stopper, which is placed next to the DC motor and is used by the robot to seal the opening of the test tube.

8. The intelligent equipment system for gas chromatography experiments according to claim 1, characterized in that, The centrifuge includes: The box body is provided with a receiving slot; A lid, which is movably connected to the box body, is used to open or close the receiving slot; A drive cylinder is connected to the box cover and is used to drive the box cover to move relative to the box body to open or close the receiving slot; A turntable, which is rotatably disposed within the receiving groove; An encoder is located on the turntable.

9. The intelligent equipment system for gas chromatography experiments according to any one of claims 1 to 8, characterized in that, The extraction and filtration machine includes: A first tube holder, used to hold the test tube; The first transfer track is located beside the first tube seat; A liquid suction machine, which is movably mounted on the first transfer track; A transfer slide rail is provided at one end adjacent to the first transfer track; A transfer platform, which is movably mounted on the transfer slide rail, is used to place the test tube; The second syringe, the aspirator is adapted to grasp the second syringe and draw the solution from the test tube, the second syringe is adapted to be placed on the transfer table under the transfer of the aspirator; The second transfer track extends in a direction parallel to the direction of extension of the first transfer track. The injection machine is movably disposed on the second transfer track, the transfer platform is adapted to move from one end of the first transfer track to one end of the second transfer track, and the injection machine is adapted to grab the second syringe on the transfer platform; The second tube holder is used to place the detection tube, and the injection machine is adapted to inject the liquid in the second syringe into the detection tube.

10. The intelligent equipment system for gas chromatography experiments according to claim 9, characterized in that, The extraction and filtration machine also includes an injection bracket and a needle clamping component. The second syringe is placed on the injection bracket, which is positioned at one end of the first transfer track. The needle clamping component is positioned at the other end of the first transfer track. The liquid aspirator is adapted to grab the second syringe on the injection bracket and transfer it to the needle clamping component. The needle clamping component is adapted to clamp the needle of the second syringe to remove the needle. And / or, the extraction and filtration machine further includes a filter element, which is disposed on the second tube seat and located above the detection tube, and is used to be fitted onto the outlet of the second syringe.

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