Extraction workstation

Abstract

This invention discloses an extraction workstation and an extraction method using the extraction workstation. The extraction workstation includes a frame and a first mounting module, a second mounting module, a moving module, a positioning device, a vibration device, and an extraction device mounted on the frame. The moving module is configured to grip and transfer grinding tubes via capping jaws, causing the grinding tubes on the first mounting module to be sequentially transferred to the positioning device and the vibration device. The moving module is also configured to aspirate extractant or the ground sample via a pipette tip, add extractant to the tube body on the positioning device, and add the ground sample to the extraction device. The moving module drives the capping jaws to complete the transfer operation of the grinding tubes, and the moving module drives the pipette to complete the aspiration and expulsion of liquid from the grinding tubes. This eliminates the need for manual intervention and improves operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of extraction equipment technology, and in particular to an extraction workstation. Background Technology

[0002] In production and daily life, it is sometimes necessary to extract and analyze samples, such as extracting and analyzing drug substances from the hair and nails of suspects.

[0003] In traditional sample processing, grinding and extraction operations are usually performed on two separate instruments, and the entire process relies on manual operation. That is, the operator first needs to manually add the extraction reagent to each grinding tube containing a solid sample (such as hair, nails, etc.), and then put it into the grinder for vibration grinding. After grinding, the operator needs to manually use a pipette to draw the ground sample into a negative pressure extractor for extraction, and then analyze the extracted liquid.

[0004] Traditional sample processing methods are inefficient, produce inconsistent results, and are prone to inaccurate data recording due to the high workload of operators and human factors. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an extraction workstation that can reduce the workload of operators during the grinding and extraction process and improve sample processing efficiency.

[0006] An extraction workstation according to an embodiment of the present invention includes a frame and a first mounting module, a second mounting module, a positioning device, a vibration device, an extraction device, and an extractant container disposed on the frame. The first mounting module is adapted to load a grinding tube, the grinding tube including a tube body and a tube cap, the tube body being used to pre-load the sample to be ground and grinding media, and the tube cap being configured to seal the tube body; the second mounting module is adapted to load a pipette tip; the positioning device is used to fix the tube body; the vibration device is configured to load the grinding tube to vibrate the grinding tube; the extraction device is configured to extract the ground sample; the extractant container is used to load the extractant; a moving end of a moving module is equipped with a capping gripper and a pipette, the moving module being capable of driving the capping gripper and the pipette to move between the first mounting module and the second mounting module. The second mounting module, the positioning device, the vibration device, the extraction device, and the extractant container are transferred together. The capping jaws are configured to clamp or release the grinding tube. When the positioning device fixes the tube body, the capping jaws can clamp the tube cap and screw on the tube cap. The pipette can be loaded with the pipette tip. The pipette draws extractant from the extractant container through the pipette tip and discharges the extractant into the grinding tube. The pipette draws the ground sample from the grinding tube through the pipette tip and discharges the ground sample into the extraction device.

[0007] The workstation has at least the following beneficial effects: it integrates the first installation module, the second installation module, the moving module, the positioning device, the vibration device, and the extraction device. The moving module drives the capping jaws to transfer the grinding tube, and the moving module drives the pipette to aspirate and expel liquid from the grinding tube. This eliminates the need for manual intervention and improves operational efficiency. By entrusting the tedious transfer of grinding tubes and liquids to the moving module, it improves the efficiency and accuracy of large-scale sample processing, while also reducing the risk of infection for operators. Furthermore, the workstation can standardize the workflow, ensuring the consistency and reliability of sample processing results.

[0008] According to some embodiments of the present invention, the capping jaw includes a clamping part and a rotating part. The clamping part is disposed on the rotating part, and the rotating part is used to drive the clamping part to rotate. The clamping part is used to clamp the grinding tube. The capping jaw has a simple structure and can realize two motion modes: rotation and clamping. It simplifies the execution mechanism of the entire workstation and makes it easy to miniaturize the workstation.

[0009] According to some embodiments of the present invention, the clamping part includes two opposing claws, and each of the two claws has a clamping groove at one of its opposing ends. The clamping groove is V-shaped, which facilitates clamping the grinding tube. The V-shape allows the grinding tube to be slowly clamped in the clamping groove, and it is also suitable for clamping grinding tubes of different sizes.

[0010] According to some embodiments of the present invention, the frame includes a mounting platform, on which the first mounting module, the second mounting module, the positioning device, and the extraction device are all disposed. The moving module is disposed above the mounting platform, and the vibration device is disposed below the mounting platform. The mounting platform facilitates the centralized installation of the first mounting module, the second mounting module, the positioning device, the vibration device, and the extraction device, and facilitates the operation of the moving module.

[0011] According to some embodiments of the present invention, the positioning device includes a guide positioning plate and a clamping assembly. Both the guide positioning plate and the clamping assembly are disposed on the mounting platform. The guide positioning plate is disposed above the clamping assembly. The guide positioning plate has a guide positioning hole for inserting the grinding tube. The clamping assembly is adapted to clamp and fix the grinding tube. The guide positioning plate can both assist in fixing the grinding tube and guide the grinding tube during insertion.

[0012] According to some embodiments of the present invention, the positioning device further includes a detector disposed on the mounting platform. The guide positioning plate has a viewing window on one side facing the detector. A barcode or QR code is affixed to the tube body. The detector is used to detect and identify the barcode or QR code. The detector is electrically connected to the clamping assembly. When the grinding tube is inserted, the detector identifies the barcode or QR code on the tube body, causing the clamping assembly to clamp and fix the grinding tube. The detector, in conjunction with the capping claw, realizes the identification of the barcode or QR code, which facilitates information recording and allows the clamping assembly to clamp the grinding tube. The operation is simple and improves work efficiency.

[0013] According to some embodiments of the present invention, the vibration device includes a vibrator and a grinding adapter. The grinding adapter is connected to the vibrator, and the vibrator is used to drive the grinding adapter to reciprocate vertically. The grinding adapter is used to load the grinding tube. The vibration device has a simple structure, and the grinding adapter is used to achieve stable fixation of the grinding tube and prevent it from detaching during vibration.

[0014] According to some embodiments of the present invention, the vibration device further includes a rubber support block, a first damping plate, a second damping plate, and a third damping plate: the rubber support block is connected to the frame; the first damping plate is connected to the rubber support block; the second damping plate is connected to the first damping plate by a first spring; the third damping plate is connected to the second damping plate by a second spring, and a bracket is connected to the third damping plate; the vibrator includes a motor and a mounting shaft; the motor is mounted on the first damping plate; the mounting shaft is slidably connected to the bracket in a vertical direction; the mounting shaft is driven by an eccentric block; the motor is used to drive the mounting shaft to reciprocate vertically; and the free end of the mounting shaft is used to mount the grinding adapter. This helps to reduce resonance during grinding and avoid resonance affecting the entire workstation.

[0015] According to some embodiments of the present invention, the extraction device includes a receiving plate, a filter plate, and a top cover: the receiving plate is detachably connected to the mounting platform, and the receiving plate is provided with a plurality of receiving holes, each corresponding to a grinding tube; the lower end of the receiving plate is connected to a negative pressure pump; the filter plate is detachably connected to the receiving plate, and the filter plate is configured to enclose the receiving plate; the filter plate is provided with a plurality of filter holes, each corresponding to a receiving hole; filter cotton is filled in the filter holes; the moving module draws the ground sample into the filter holes through the suction head; the top cover is slidably disposed on the mounting platform, and the top cover is used to enclose the filter plate so that the negative pressure pump draws the ground sample through the filter cotton.

[0016] According to some embodiments of the present invention, a waste discharge trough is further included, which is disposed at the lower end of the mounting platform. A waste discharge port is provided on the mounting platform, which communicates with the waste discharge trough and is disposed between the first mounting module and the second mounting module.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the extraction workstation from the front view in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural schematic diagram of the extraction workstation from the rear view angle according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0023] Figure 5 This is a schematic diagram of the extraction workstation from a side view according to an embodiment of the present invention.

[0024] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0025] Figure 7 This is a schematic diagram of the installation position of the clamping component in the extraction workstation according to an embodiment of the present invention;

[0026] Figure 8 for Figure 7 Enlarged view at point D;

[0027] Figure 9 This is a schematic diagram of the vibration device of the extraction workstation according to an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the capping gripper of the extraction workstation according to an embodiment of the present invention.

[0029] Figure label:

[0030] Frame 100, mounting platform 110, waste discharge trough 120, waste discharge port 130;

[0031] First mounting module 200, grinding tube 210, tube body 211, tube cap 212;

[0032] Second installation module 300, suction head 310;

[0033] The moving module 400, the capping gripper 410, the clamping part 411, the rotating part 412, the claw part 413, the clamping groove 414, the pipette 420, and the vision detector 430.

[0034] Positioning device 500, guide positioning plate 510, guide positioning hole 511, clamping assembly 520, detector 530;

[0035] Vibration device 600, exciter 610, motor 611, mounting shaft 612;

[0036] Grinding adapter 620, rubber support block 630, first shock absorber 640;

[0037] Second damping plate 650, first spring 651;

[0038] Third damping plate 660, second spring 661, bracket 662;

[0039] Extraction device 700, receiving plate 710, receiving hole 711;

[0040] Filter plate 720, filter holes 721;

[0041] Top cover 730, extractant container 800. Detailed Implementation

[0042] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0044] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0045] It should be noted that the traditional method involves the operator manually adding the solid sample (e.g., hair, nail, etc.) and the required testing reagents to each grinding tube 210, and then attaching an informational label to the surface of the grinding tube 210. After all samples have been added, the grinding stage begins. The operator must manually set the parameters of the grinding equipment, including frequency and time, and then load the grinding tubes 210 into the adapter. Each adapter holds several grinding tubes 210, and the grinding tubes 210 on the first mounting module 200 are processed in batches according to the adapter's capacity. The grinding equipment is then started. After grinding is complete, the operator must repeat this sequence of operations until all grinding tubes 210 have been ground, before proceeding to the extraction stage.

[0046] During the extraction stage, the operator first needs to prepare a pipette and assemble the tip, then manually open the cap of the grinding tube 210, and then use the pipette to draw a specified volume of solution and accurately drop it onto the extraction device 700. After the drop is completed, the cap of the grinding tube 210 needs to be closed again, the used tip 310 needs to be discarded, and a new tip 310 needs to be replaced. This sequence of operations needs to be continued until all the ground samples have been processed.

[0047] Reference Figures 1 to 10This invention discloses an extraction workstation, including a frame 100 and a first mounting module 200, a second mounting module 300, a positioning device 500, a vibration device 600, an extraction device 700, and an extraction solvent container 800 disposed on the frame 100. The first mounting module 200 is adapted to load a grinding tube 210, which includes a tube body 211 and a tube cap 212. The tube body 211 is used to pre-load the sample to be ground and the grinding medium, and the tube cap 212 is configured to seal the tube body 211. The second mounting module 300 is adapted to load a pipette tip 310. The positioning device 500 is used to fix the tube body 211. The vibration device 600 is configured to load the grinding tube 210 to vibrate the grinding tube 210. The extraction device 700 is configured to extract the ground sample. The extraction solvent container 800 is used to load the extraction solvent. A capping gripper 410 and a pipette 420 are mounted on the moving end of a moving module 400, and the moving module 400 is capable of driving the capping gripper 410 and the pipette 420. The device 20 is transferred between the first mounting module 200, the second mounting module 300, the positioning device 500, the vibration device 600, the extraction device 700, and the extractant container 800. The capping gripper 410 is configured to clamp or release the grinding tube 210. When the positioning device 500 fixes the tube body 211, the capping gripper 410 can clamp the tube cap 212 and screw the tube cap 212. The pipette 420 can be loaded with the pipette tip 310. The pipette 420 draws the extractant from the extractant container 800 through the pipette tip 310 and discharges the extractant into the grinding tube 210. The pipette 420 draws the ground sample from the grinding tube 210 through the pipette tip 310 and discharges the ground sample into the extraction device 700.

[0048] It should be noted that the first mounting module 200 is a 96-well plate, meaning it has 96 holes on its surface for mounting the grinding tubes 210. Correspondingly, the second mounting module 300 also has 96 pipette tips 310. The filter plate 720 and the receiving plate 710 also have 96 holes. This ensures that each grinding tube 210 has an independent processing space, preventing sample cross-contamination. Understandably, an intermediate layer plate is also provided below the first mounting module 200, which also has 96 holes. The holes on the intermediate layer, in conjunction with the holes on the first mounting module 200, position the grinding tubes 210 to prevent positional deviation. The moving module 400 is a conventional X, Y, Z three-axis moving module, meaning the working end can reach any position in the predetermined space. The extractant container 800 is loaded with extractant.

[0049] It should be understood that the workstation integrates the first installation module 200, the second installation module 300, the moving module 400, the positioning device 500, the vibration device 600, and the extraction device 700. The moving module 400 drives the capping gripper 410 to complete the transfer operation of the grinding tube 210, and the moving module 400 drives the pipette 420 to complete the aspiration and expulsion operation of the grinding tube 210. This eliminates the trouble of manual intervention and improves the efficiency of operation. The tedious transfer of grinding tubes and liquids is handled by the moving module 400, which improves the efficiency and accuracy of large-scale sample processing. At the same time, it reduces the risk of infection for operators. Furthermore, the workstation can standardize the operation process to ensure the consistency and reliability of sample processing results.

[0050] Reference Figure 10 The capping gripper 410 includes a clamping part 411 and a rotating part 412. The clamping part 411 is mounted on the rotating part 412, which drives the clamping part 411 to rotate. The clamping part 411 is used to clamp the grinding tube 210. The capping gripper 410 has a simple structure and can realize both rotation and clamping movements, simplifying the execution mechanism of the entire workstation and facilitating the miniaturization of the workstation. The clamping part 411 includes two opposing claw parts 413. Each of the two claw parts 413 has a clamping groove 414 at one of its opposing ends. The clamping groove 414 is V-shaped, which facilitates the clamping of the grinding tube 210. The V-shape allows the grinding tube 210 to be gradually clamped in the clamping groove 414, and it is also suitable for clamping grinding tubes 210 of different sizes. It should be understood that the mobile end of the mobile module 400 is also equipped with a vision detector 430, which is used to visually detect the corresponding grinding tube 210 or pipette tip 310 so that the capping gripper 410 can hold the grinding tube 210 or the pipette 420 can pick up the pipette tip 310.

[0051] In some embodiments, the frame 100 includes a mounting platform 110, on which the first mounting module 200, the second mounting module 300, the positioning device 500, and the extraction device 700 are all mounted. The moving module 400 is mounted above the mounting platform 110, and the vibration device 600 is mounted below the mounting platform 110. The mounting platform 110 facilitates the centralized mounting of the first mounting module 200, the second mounting module 300, the positioning device 500, the vibration device 600, and the extraction device 700, and facilitates the operation of the moving module 400.

[0052] Reference Figure 3 , Figure 4 , Figure 7 and Figure 8The positioning device 500 includes a guide positioning plate 510 and a clamping assembly 520. Both the guide positioning plate 510 and the clamping assembly 520 are mounted on the mounting platform 110. The guide positioning plate 510 is positioned above the clamping assembly 520. The guide positioning plate 510 has a guide positioning hole 511 for inserting the grinding tube 210. The clamping assembly 520 is adapted to clamp and fix the grinding tube 210. The guide positioning plate 510 can both assist in fixing the grinding tube 210 and guide the grinding tube 210 during insertion. It can be understood that the grinding tube 210 is inserted along the guide positioning hole 511. The clamping assembly 520, which is actually two clamping blocks driven by a gear and rack pair, is inserted between the two clamping arms. The drive gear below drives the two racks to slide, and the clamping arms fixed on the racks can move closer or further apart. The drive gear is driven by a second motor, which is electrically connected to the detector 530. The second motor only operates when the detector 530 detects the barcode or QR code information, causing the two clamping arms to clamp the grinding tube 210. After a predetermined clamping time, the two clamping arms will release the grinding tube 210 under the drive of the second motor. The predetermined time is used for adding and removing liquid.

[0053] Understandably, the outer peripheral wall of the grinding tube 210 is provided with a clamping portion, and the grinding adapter 620 is provided with a mounting hole. The grinding tube 210 is clamped by the capping jaws 410 on the moving module 400. The capping jaws 410 clamp the cap or the clamping portion of the grinding tube 210, and the tube body below the clamping portion can be threaded to the mounting hole. The inner bottom of the grinding tube 210 is provided with a first buffer recess, which is conical in shape. The cap is screwed onto the tube body of the grinding tube 210, and the cap is provided with a second buffer recess, which is also conical in shape.

[0054] In some embodiments, the positioning device 500 further includes a detector 530, which is disposed on the mounting platform 110. A viewing window is provided on the side of the guide positioning plate 510 facing the detector 530. A barcode or QR code is affixed to the tube body 211. The detector 530 is used to detect and identify the barcode or QR code. The detector 530 is electrically connected to the clamping assembly 520. When the grinding tube 210 is inserted, the detector 530 identifies the barcode or QR code on the tube body 211, so that the clamping assembly 520 clamps and fixes the grinding tube 210. The detector 530, in conjunction with the capping claw 410, realizes the recognition of the barcode or QR code, which is convenient for recording information and allows the clamping assembly 520 to clamp the grinding tube 210. The operation is simple and improves work efficiency. It can be understood that the detector 530 is a conventional USB barcode reader.

[0055] Reference Figure 9The vibration device 600 includes a vibrator 610 and a grinding adapter 620. The grinding adapter 620 is connected to the vibrator 610. The vibrator 610 is used to drive the grinding adapter 620 to reciprocate vertically. The grinding adapter 620 is used to load the grinding tube 210. The vibration device 600 has a simple structure. The grinding adapter 620 is used to stably fix the grinding tube 210 and prevent it from detaching during vibration. It should be noted that the vibrator 610 can drive the grinding tube 210 to vibrate up and down. The grinding medium inside the grinding tube 210 collides and grinds with the sample, thereby achieving the purpose of crushing the sample.

[0056] In some embodiments, the vibration device 600 further includes a rubber support block 630, a first damping plate 640, a second damping plate 650, and a third damping plate 660: the rubber support block 630 is connected to the frame 100; the first damping plate 640 is connected to the rubber support block 630; the second damping plate 650 is connected to the first damping plate 640 via a first spring 651; the third damping plate 660 is connected to the second damping plate 650 via a second spring 661, and a bracket 662 is connected to the third damping plate 660. The vibrator 610 includes a motor 611 and a mounting shaft 612. The motor 611 is mounted on the first damping plate 640. The mounting shaft 612 is vertically slidably connected to a bracket 662. The mounting shaft 612 is driven by an eccentric block to connect to the motor 611. The motor 611 drives the mounting shaft 612 to reciprocate vertically. The free end of the mounting shaft 612 is used to mount the grinding adapter 620. This design helps reduce resonance during grinding and prevents resonance from affecting the entire workstation. It should be noted that because the mounting shaft 612 is driven by an eccentric block... The block drive connects to the motor 611. Therefore, when the motor 611 drives the eccentric block to rotate, it will generate vibration. At this time, the three damping plates can reduce the vibration impact of the motor 611 on the entire frame 100. Furthermore, the rubber support block 630, the first damping plate 640, the second damping plate 650, the first spring 651, the third damping plate 660, the second spring 661, and the bracket 662 constitute a rigid system and a non-rigid system. The rigid system includes three levels of damping plates, springs, and several dampers and air suspensions. The dampers and air suspensions, like the springs, are supported between the various levels of damping plates. The non-rigid system is the non-rigid connection structure between the mounting shaft 612 and the bracket 662. For example, the mounting shaft 612 and the bracket 662 are connected by a rubber ring. The so-called dampers include hydraulic dampers and mechanical dampers. The hydraulic dampers are used to absorb high-speed vibrations, and the mechanical dampers are used to absorb low-speed vibrations. The combination of the rigid system and the non-rigid system can reduce the resonance effect caused by vibration grinding. The dampers can consume some of the vibration energy.

[0057] Reference Figure 5 and Figure 6The extraction device 700 includes a receiving plate 710, a filter plate 720, and a top cover 730. The receiving plate 710 is detachably connected to the mounting platform 110. The receiving plate 710 has a plurality of receiving holes 711, which correspond one-to-one with the grinding tube 210. The lower end of the receiving plate 710 is connected to a negative pressure pump. The filter plate 720 is detachably connected to the receiving plate 710 and is configured to encapsulate the receiving plate 710. The filter plate 720 has a plurality of filter holes 721, which correspond one-to-one with the receiving holes 711. The filter holes 721 are filled with filter cotton. The moving module 400 picks up the ground sample through the suction head 310 and adds it into the filter hole 721. The top cover 730 is slidably mounted on the mounting platform 110 and is used to encapsulate the filter plate 720 so that the negative pressure pump draws the ground sample through the filter cotton.

[0058] In some embodiments, a waste discharge trough 120 is also included. The waste discharge trough 120 is disposed at the lower end of the mounting platform 110. A waste discharge port 130 is provided on the mounting platform 110. The waste discharge port 130 communicates with the waste discharge trough 120 and is disposed between the first mounting module 200 and the second mounting module 300.

[0059] An extraction method, employing the extraction workstation described above according to the present invention, includes the following steps:

[0060] S1, the moving module 400 drives the capping gripper 410 to move and clamp the predetermined grinding tube 210 on the first mounting module 200.

[0061] S2, the moving module 400 drives the grinding tube 210 to be inserted into the guide positioning hole 511, and then the capping claw 410 drives the grinding tube 210 to rotate. When the detector 530 detects the barcode or QR code on the tube body 211 of the grinding tube 210, the capping claw 410 stops rotating, and the clamping component 520 clamps the tube body 211 of the grinding tube 210. At this time, the capping claw 410 continues to rotate while clamping the tube cap 212 to unscrew the tube cap 212.

[0062] S3. After unscrewing the tube cap 212 in step S2, the moving module 400 moves the pipette 420 and picks up the predetermined pipette tip 310 on the second mounting module 300. After the pipette 420 is equipped with the corresponding pipette tip 310, the moving module 400 moves the pipette 420 to draw the extraction solvent and then injects the liquid into the tube body 211 that has been opened in step S2. After the liquid injection is completed, the moving module 400 moves the pipette tip 310 back into the corresponding position on the second mounting module 300.

[0063] S4, the moving module 400 drives the capping jaws 410 to tighten the tube cap 212 onto the tube body 211, the clamping assembly 520 releases the grinding tube 210, the moving module 400 drives the grinding tube 210 into the grinding adapter 620, and then the vibrator 610 vibrates the grinding adapter 620 to grind and extract the sample in the grinding tube 210.

[0064] S5. After grinding is completed, the moving module 400 drives the grinding tube 210 back into the guide positioning hole 511 through the capping gripper 410, and then performs the capping action in step S2. After that, the moving module 400 drives the pipette 420 to perform liquid extraction operation on the opened tube 211, takes out the ground sample and adds it to the corresponding filter hole 721 of the filter plate 720, and then discards the corresponding pipette tip 310 in the waste outlet 130.

[0065] S6, the moving module 400 drives the capping jaws 410 to screw the tube cap 212 back onto the tube body 211, and then the capping jaws 410 clamp the grinding tube 210 and, driven by the moving module 400, put it back into the predetermined position of the first mounting module 200.

[0066] S7, after the top cover 730 slides down, it covers the filter plate 720. The negative pressure pump draws negative pressure, so that the ground sample passes through the filter cotton from the filter hole 721 to the corresponding receiving hole 711, thus completing the filtration.

[0067] S8, S1-S7 are repeated for the next grinding tube 210 until all grinding tubes 210 on the first mounting module 200 have been extracted and filtered.

[0068] It is understandable that the grinding tube 210 can be clamped onto the vibration device 600 for vibration grinding first, and then the extractant can be added; and the suction head 310 and the grinding tube 210 can be clamped and transferred at the same time in S1, and the suction head 310 can be left in the second mounting module 300 throughout the process.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An extraction workstation, characterized in that, Includes a rack (100) and components mounted on the rack (100): A first mounting module (200) is adapted to load a grinding tube (210), the grinding tube (210) including a tube body (211) and a tube cap (212), the tube body (211) being used for preloading the sample to be ground and the grinding medium, and the tube cap (212) being configured to seal the tube body (211). The second mounting module (300) is adapted to mount the suction head (310); Positioning device (500) for fixing the tube body (211); A vibration device (600) is configured to load the grinding tube (210) to vibrate the grinding tube (210). The extraction apparatus (700) is configured to extract the ground sample; Extractant container (800) for loading extractant; A movable module (400) has a capping gripper (410) and a pipette (420) mounted on its movable end. The movable module (400) can drive the capping gripper (410) and the pipette (420) to move between the first mounting module (200), the second mounting module (300), the positioning device (500), the vibration device (600), the extraction device (700), and the extractant container (800). The capping gripper (410) is configured to grip or release the grinding tube (210). When the positioning device (500)... When the tube body (211) is fixed, the capping jaws (410) can hold the tube cap (212) and screw the tube cap (212). The pipette (420) can be loaded with the pipette tip (310). The pipette (420) draws the extractant from the extractant container (800) through the pipette tip (310) and discharges the extractant into the grinding tube (210). The pipette (420) draws the ground sample from the grinding tube (210) through the pipette tip (310) and discharges the ground sample into the extraction device (700). The capping jaw (410) includes a clamping part (411) and a rotating part (412). The clamping part (411) is disposed on the rotating part (412). The rotating part (412) is used to drive the clamping part (411) to rotate. The clamping part (411) is used to clamp the grinding tube (210). The clamping part (411) includes two opposing claw parts (413), and each of the two claw parts (413) has a clamping groove (414) at one of its opposing ends. The clamping groove (414) is V-shaped. The frame (100) includes a mounting platform (110), the first mounting module (200), the second mounting module (300), the positioning device (500) and the extraction device (700) are all mounted on the mounting platform (110), the moving module (400) is mounted above the mounting platform (110), and the vibration device (600) is mounted below the mounting platform (110). The positioning device (500) includes a guide positioning plate (510) and a clamping assembly (520). Both the guide positioning plate (510) and the clamping assembly (520) are disposed on the mounting platform (110). The guide positioning plate (510) is disposed above the clamping assembly (520). The guide positioning plate (510) has a guide positioning hole (511) for inserting the grinding tube (210). The clamping assembly (520) is adapted to clamp and fix the grinding tube (210). The vibration device (600) includes a vibrator (610) and a grinding adapter (620), the grinding adapter (620) being connected to the vibrator (610), the vibrator (610) being used to drive the grinding adapter (620) to reciprocate vertically, and the grinding adapter (620) being used to load the grinding tube (210).

2. The extraction workstation according to claim 1, characterized in that, The positioning device (500) further includes a detector (530), which is disposed on the mounting platform (110). The guide positioning plate (510) has a viewing window on the side facing the detector. A barcode or QR code is affixed to the tube body (211). The detector (530) is used to detect and identify the barcode or QR code. The detector (530) is electrically connected to the clamping assembly (520). When the grinding tube (210) is inserted, the detector (530) identifies the barcode or QR code on the tube body (211), so that the clamping assembly (520) clamps and fixes the grinding tube (210).

3. The extraction workstation according to claim 1, characterized in that, The vibration device (600) further includes: A rubber support block (630) is connected to the frame (100); The first damping plate (640) is connected to the rubber support block (630); The second damping plate (650) is connected to the first damping plate (640) by the first spring (651); The third damping plate (660) is connected to the second damping plate (650) by the second spring (661). A bracket (662) is connected to the third damping plate (660). The vibrator (610) includes a motor (611) and a mounting shaft (612). The motor (611) is mounted on the first damping plate (640). The mounting shaft (612) is slidably connected to the bracket (662) in the vertical direction. The mounting shaft (612) is connected to the motor (611) through an eccentric block. The motor (611) is used to drive the mounting shaft (612) to reciprocate in the vertical direction. The free end of the mounting shaft (612) is used to install the grinding adapter (620).

4. The extraction workstation according to claim 3, characterized in that, The extraction apparatus (700) includes: A receiving plate (710) is detachably connected to the mounting platform (110). The receiving plate (710) is provided with a plurality of receiving holes (711), and the receiving holes (711) are provided one-to-one with the grinding tube (210). The lower end of the receiving plate (710) is connected to a negative pressure pump. A filter plate (720) is detachably connected to the receiving plate (710). The filter plate (720) is configured to encapsulate the receiving plate (710). The filter plate (720) is provided with a plurality of filter holes (721). The filter holes (721) are arranged one-to-one with the receiving holes (711). The filter holes (721) are filled with filter cotton. The moving module (400) picks up the ground sample through the suction head (310) and adds it into the filter holes (721). The top cover (730) is slidably disposed on the mounting platform (110). The top cover (730) is used to enclose the filter plate (720) so that the negative pressure pump draws the ground sample through the filter cotton.

5. The extraction workstation according to claim 3 or 4, characterized in that, It also includes a waste discharge trough (120), which is located at the lower end of the mounting platform (110). The mounting platform (110) is provided with a waste discharge port (130), which is connected to the waste discharge trough (120). The waste discharge port (130) is located between the first mounting module (200) and the second mounting module (300).

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