A microwave digestion and precise constant volume filtration detection integrated experimental device

Abstract

The application relates to the technical field of element analysis detection, and discloses a microwave digestion and precise constant-volume filtering detection integrated experimental device, which comprises a cabinet body, a partition plate is fixedly arranged in the cabinet body in a transverse mode, the cabinet body is divided into an upper cavity and an operation chamber, a digestion assembly, an automatic assembly, a constant-volume assembly and a filtering detection assembly are arranged in the operation chamber, the automatic assembly and the filtering detection assembly are located above the digestion assembly and the constant-volume assembly, the device integrates the functions of microwave digestion, bottle cap mounting and demounting, acid removal, constant volume, filtering detection and the whole process, the sample or the digestion tank does not need to be transferred between multiple independent devices, the bottle cap mounting and demounting are automatically completed through a mechanical structure, manual intervention steps are reduced, the whole detection process is more smooth, the operation complexity is greatly reduced, the overall experimental efficiency is improved, and the problems of microwave digestion, acid removal, constant volume, filtering and the like are integrated.

Description

Technical Field

[0001] This invention relates to the field of elemental analysis and detection technology, specifically to an integrated experimental device for microwave digestion and precise volumetric filtration detection. Background Technology

[0002] In the field of elemental analysis, microwave digestion is a key step in sample pretreatment. Subsequent steps such as acid removal, volume adjustment, and filtration are required before the sample can be analyzed on an instrument (such as the ICP-710 inductively coupled plasma atomic emission spectrometer).

[0003] In the current experimental procedure, each operation is carried out separately, and the sample needs to be transferred between multiple devices such as microwave digester, fume hood, and acid removal heater. This is not only cumbersome and time-consuming, but also poses a risk of sample contamination and volatilization loss, affecting the accuracy of the test results.

[0004] Meanwhile, the existing process suffers from several pain points due to manual operation: First, the installation and removal of the pressure relief module relies on manual use of a capping tool, which is inefficient and difficult to control, easily leading to poor sealing or damage to the pressure relief module; Second, the transfer of the digestion vessel between the frame, the acid removal heater, and the volumetric container requires manual operation, which is prone to collisions and sample spillage; Third, the heating and ventilation systems operate independently, requiring manual opening of the fume hood during acid removal heating, and cannot automatically adjust the wind speed and heating temperature according to the experimental progress, resulting in high energy consumption and poor safety; Fourth, the overall experimental equipment is scattered, occupying a large amount of laboratory space, and lacks unified automated control, making it difficult to meet the needs of modern laboratories for efficient, accurate, and safe testing.

[0005] Therefore, an integrated experimental device for microwave digestion and precise volume determination, filtration and detection is proposed to solve the problem of integrating microwave digestion, acid removal, volume determination and filtration. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated experimental device for microwave digestion and precise volumetric filtration detection to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an integrated experimental device for microwave digestion and precise volume filtration detection, comprising a cabinet, wherein a partition is horizontally fixedly installed inside the cabinet, dividing the cabinet into an upper cavity and an operating chamber, wherein the operating chamber is provided with a digestion component, an automatic component, a volume filtration component and a filtration detection component, wherein the automatic component and the filtration detection component are located above the digestion component and the volume filtration component.

[0008] The digestion assembly includes a tray that is slidably mounted on the inner wall of the operating chamber via a threaded rod transmission mechanism. A digestion vessel mounting bracket for fixing the digestion vessel is inserted into the top of the tray. Several rotating bases are rotatably mounted on the bottom surface of the digestion vessel mounting bracket. The rotating bases are used to fix the digestion vessel and rotate it. A sealing plate is slidably mounted inside the partition for sealing the connection port. An explosion-proof sleeve is fixedly mounted on the inner wall of the upper cavity above the digestion vessel mounting bracket via a cylinder. An explosion-proof top cover for ejecting the digestion vessel is fixedly mounted on the inner wall of the explosion-proof sleeve.

[0009] The automatic component includes several claws that are slidably mounted on the bottom of the partition plate by a threaded rod transmission mechanism two, and a through hole is provided at the center of the claws; a mounting plate three is sleeved on the outside of the threaded rod transmission mechanism two, and several suction heads are fixedly mounted on the bottom of the mounting plate three, and the suction heads pass through the through hole.

[0010] The volume control assembly includes a liquid level sensor that is fixedly installed inside the test tube holder for detecting the liquid level.

[0011] The filtration and detection assembly includes a mounting plate four that is slidably mounted on the inner wall of the cabinet via an electric slide rail. A pipette is fixedly mounted on the bottom of the mounting plate four, and the pipette is used to transfer the digested solution.

[0012] Preferably, a lifting plate is threadedly installed on the inner wall of the operating chamber via a threaded rod transmission mechanism. A sealing base plate is fixedly installed on the lifting plate via a connecting rod. The sealing base plate is located on the side of the lifting plate away from the threaded rod transmission mechanism. A tray is rotatably installed at the center of the surface of the sealing base plate. An annular groove is formed on the surface of the tray for installing a digestion vessel mounting rack. The digestion vessel mounting rack is used to place the digestion vessel. A motor is fixedly installed at the bottom of the sealing base plate, and its output end passes through the sealing base plate and connects to the tray. A sealing ring is fixedly installed between the surface of the sealing base plate and the outer wall of the tray. The sealing ring is used to seal the connection between the base plate and the connection port.

[0013] Preferably, the connection port is located above the digestion tank mounting frame on the partition plate, and a telescopic rod is fixedly installed between the sealing plate and the inner wall of the partition plate. The telescopic rod is used to drive the sealing plate to seal the connection port. A displacement sensor is fixedly installed at the bottom of the partition plate, located on the rising path of the digestion tank mounting frame.

[0014] Preferably, the upper cavity is divided into a digestion chamber and an equipment chamber by a vertical plate. The digestion chamber is located above the digestion assembly. The fixed end of cylinder one is fixedly installed on the top inner wall of the digestion chamber. An installation plate one is fixedly installed on the output end of cylinder one. Several explosion-proof sleeves are fixedly installed on the side of the connection port of the installation plate one. An explosion-proof top cover is fixedly installed on the top inner wall of the explosion-proof sleeve through a telescopic rod two. The explosion-proof top cover is used to hold the digestion vessel lid during microwave digestion.

[0015] Preferably, the automatic component includes a movable plate, which is slidably connected to the bottom of the partition via a threaded rod transmission mechanism. A cylinder is fixedly installed on the side of the movable plate away from the partition, and an installation plate is fixedly installed on the output end of the cylinder. Several claws are fixedly installed on the side of the installation plate facing the digestion component. An infrared sensor is fixedly installed on the side of the installation plate near the digestion vessel mounting bracket to detect the position of the claws relative to the digestion vessel. A telescopic rod is fixedly installed on the side of the installation plate away from the claws, and the installation plate is fixedly installed on the telescopic end of the telescopic rod. A suction head passes through the installation plate and is connected to a connecting pipe. The end of the connecting pipe away from the suction head is connected to a negative pressure pump.

[0016] Preferably, the volume-fixing component further includes a support frame, which is fixedly installed on the side of the operating chamber away from the digestion component. A second tray is rotatably mounted on the top surface of the support frame, and a test tube holder is movably mounted on the top surface of the second tray.

[0017] Preferably, the electric slide rail is fixedly installed on the inner wall of the operating room near the volume-fixing component. A moving block is slidably installed on the surface of the electric slide rail. A cylinder three is fixedly installed at the bottom of the moving block. The mounting plate four is fixedly installed at the output end of the cylinder three. The suction tube passes through the mounting plate four, and one of its extended ends is fixedly connected to a detection tube. The end of the detection tube away from the suction tube is connected to the detection port of the ICP detector. A sleeve is fitted over the outside of several detection tubes to gather the detection tubes. A filter sleeve is snapped into the suction port of the detection tube to filter the absorbed liquid.

[0018] Preferably, several heating rods are fixedly installed inside the operating chamber, located on one side of the digestion tank rack, for heating the acid removal step. A fan is fixedly installed on the inner wall of the operating chamber, located on one side of the digestion tank rack, for exhausting and cooling the acid mist. An acid mist treatment device is fixedly installed on the outer wall of the cabinet. The acid mist treatment device is connected to the fan through a pipe and is connected to the exhaust port of the ICP detector through a pipe. The acid mist treatment device is used to treat the acid mist generated during the experiment.

[0019] Preferably, a magnetron is fixedly installed inside the digestion chamber, located on one side of the connection port, for generating microwaves during the digestion step, and a metal plate is fixedly installed on the inner wall of the digestion chamber for reflecting microwaves.

[0020] Preferably, the ICP detector is installed inside the equipment room for detection. A waste liquid recovery tray is fixedly installed on the bottom inner wall of the operating room. The ICP detector and the waste liquid recovery tray are connected by a waste liquid discharge pipe. The waste liquid discharge pipe passes through the partition and is located inside the operating room. The waste liquid recovery tray is used to recover the waste liquid dripping from the pipette and the waste liquid generated after the ICP detector finishes detection.

[0021] Compared with the prior art, the present invention provides an integrated experimental device for microwave digestion and precise volume-controlled filtration detection, which has the following beneficial effects:

[0022] 1. This integrated experimental device for microwave digestion and precise volume adjustment and filtration detection integrates the functions of microwave digestion, cap loading and unloading, acid removal, volume adjustment, and filtration detection. It eliminates the need to transfer samples or digestion vessels between multiple independent devices. The mechanical structure automatically completes the cap installation and removal, reducing manual intervention steps, making the entire detection process smoother, significantly reducing operational complexity, improving overall experimental efficiency, and solving the problem of integrating microwave digestion, acid removal, volume adjustment, and filtration operations.

[0023] 2. This integrated experimental device for microwave digestion and precise volume control filtration detection uses a pipette to transfer the sample solution, avoiding spillage or residue caused by manual pouring. Combined with a liquid level sensor to monitor the sample solution level in real time, it achieves precise volume control, effectively avoiding volume deviations caused by experience errors or improper operation during manual volume control. This ensures the accuracy of the sample solution concentration, providing a crucial guarantee for the reliability of subsequent detection results and improving the accuracy of the detection.

[0024] 3. This integrated experimental device for microwave digestion and precise volume filtration detection has a microwave chamber that forms a relatively closed space through a multi-layer sealing structure. This effectively prevents microwave leakage from causing harm to operators and avoids the diffusion of acid mist generated during the digestion process into the experimental environment, thereby reducing the harm of acid mist to human health and the corrosion of equipment.

[0025] 4. This integrated experimental device for microwave digestion and precise volume filtration detection features a detachable filter component. When the filter component becomes clogged or contaminated, it can be quickly disassembled and replaced without complicated cleaning or maintenance steps, thus avoiding experimental interruptions due to filtration problems and simplifying the experimental maintenance process. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the digestion component structure according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the digestion chamber structure according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the automatic component structure according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the claw and its connected mechanism according to an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the volume-regulating component structure according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the filtering and detection component according to an embodiment of the present invention.

[0035] In the diagram: 1. Cabinet; 101. Control room; 102. Digestion room; 103. Equipment room; 2. Partition;

[0036] 3. Digestion Components; 301. Lifting Plate; 302. Threaded Rod Transmission Mechanism I; 303. Sealing Base Plate; 304. Tray I; 305. Annular Groove; 306. Motor; 307. Sealing Ring; 308. Digestion Tank Mounting Rack; 309. Rotating Base; 310. Connection Port; 311. Sealing Plate; 312. Telescopic Rod I; 313. Displacement Sensor; 314. Cylinder I; 315. Mounting Plate I; 316. Explosion-proof Sleeve; 317. Telescopic Rod II; 318. Explosion-proof Top Cover; 319. Heating Rod; 320. Fan;

[0037] 4. Automatic components; 401. Moving plate; 402. Threaded rod transmission mechanism II; 403. Cylinder II; 404. Mounting plate II; 405. Claw; 406. Through hole; 407. Infrared sensor; 408. Telescopic rod III; 409. Mounting plate III; 410. Suction head; 411. Connecting pipe;

[0038] 5. Volume control assembly; 501. Support frame; 502. Tray II; 503. Test tube rack; 504. Liquid level sensor;

[0039] 6. Filter detection assembly; 601. Electric slide rail; 602. Moving block; 603. Cylinder three; 604. Mounting plate four; 605. Suction tube; 606. Filter sleeve; 607. Detection tube; 608. Tube sleeve;

[0040] 7. Magnetron; 8. Metal plate; 9. ICP detector; 10. Waste liquid recovery tray; 11. Acid mist treatment device; 12. Waste liquid discharge pipe. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Please see Figure 1-8 The present invention provides a technical solution: an integrated experimental device for microwave digestion and precise volume filtration detection, including a cabinet 1. A partition 2 is horizontally fixedly installed inside the cabinet 1, dividing the cabinet 1 into an upper cavity and an operating chamber 101. The operating chamber 101 is equipped with a digestion component 3, an automatic component 4, a volume filtration component 5, and a filtration detection component 6. The automatic component 4 and the filtration detection component 6 are located above the digestion component 3 and the volume filtration component 5.

[0044] Please see Figure 3-4 Furthermore, the digestion assembly 3 includes a tray 304 connected to and slidably mounted on the inner wall of the operating chamber 101 via a threaded rod transmission mechanism 302. A digestion vessel mounting bracket 308 for fixing the digestion vessel is inserted into the top of the tray 304. Several rotating bases 309 are rotatably mounted on the bottom surface of the digestion vessel mounting bracket 308. The rotating bases 309 are used to fix the digestion vessel and rotate it. A sealing plate 311 is slidably mounted inside the partition 2 for sealing the connection port 310. An explosion-proof sleeve 316 is fixedly mounted on the inner wall of the upper cavity above the digestion vessel mounting bracket 308 via a cylinder 314. An explosion-proof top cover 318 for ejecting the digestion vessel is fixedly mounted on the inner wall of the explosion-proof sleeve 316.

[0045] Furthermore, a lifting plate 301 is threadedly installed on the inner wall of the operating chamber 101 via a threaded rod transmission mechanism 302. A sealing base plate 303 is fixedly installed on the lifting plate 301 via a connecting rod. The sealing base plate 303 is located on the side of the lifting plate 301 away from the threaded rod transmission mechanism 302. A tray 304 is rotatably installed at the center of the surface of the sealing base plate 303. An annular groove 305 is provided on the surface of the tray 304 for installing a digestion vessel mounting rack 308. The digestion vessel mounting rack 308 is used to place the digestion vessel. A motor 306 is fixedly installed at the bottom of the sealing base plate 303. Its output end passes through the sealing base plate 303 and is connected to the tray 304. A sealing ring 307 is fixedly installed between the surface of the sealing base plate 303 and the outer wall of the tray 304. The sealing ring 307 is used to seal the bottom plate 303 and the connection port 310.

[0046] The threaded rod transmission mechanism 302 drives the lifting plate 301 to stably raise and lower the digestion vessel. Together with the sealing ring 307, it achieves a seal between the sealing base plate 303 and the connection port 310, ensuring the airtightness of the digestion chamber 102 and preventing microwave leakage and acid mist diffusion. The motor 306 drives the tray 304 to rotate, which can assist the digestion vessel mounting frame 308 in rotating during microwave digestion and facilitates the positioning of the automatic component 4. The annular groove 305 precisely fixes the digestion vessel mounting frame 308 to prevent the digestion vessel from shifting during rotation, cap tightening, and raising and lowering.

[0047] Furthermore, the connection port 310 is located above the digestion vessel mounting frame 308 on the partition 2. A telescopic rod 312 is fixedly installed between the sealing plate 311 and the inner wall of the partition 2. The telescopic rod 312 is used to drive the sealing plate 311 to seal the connection port 310. A displacement sensor 313 is fixedly installed at the bottom of the partition 2, located on the rising path of the digestion vessel mounting frame 308.

[0048] Telescopic rod 312 drives sealing plate 311 to close connection port 310 during the process. During the digestion process, telescopic rod 312 drives sealing plate 311 to open connection port 310 to facilitate the entry of digestion tank. After the digestion process is completed, digestion tank exits digestion chamber 102, and telescopic rod 312 drives sealing plate 311 to close connection port 310 to prevent acid mist from entering digestion chamber 102 and improve the sealing performance of the device. Displacement sensor 313 monitors the lifting position of digestion tank in real time to avoid excessive lifting and collision with sealing plate 311 or insufficient lowering that would prevent sealing plate 311 from closing, ensuring reasonable connection of the actions of each component.

[0049] Furthermore, the upper cavity is divided into a digestion chamber 102 and an equipment chamber 103 by a vertical plate. The digestion chamber 102 is located above the digestion assembly 3. The fixed end of the cylinder 314 is fixedly installed on the top inner wall of the digestion chamber 102. The output end of the cylinder 314 is fixedly installed with an installation plate 315. Several explosion-proof sleeves 316 are fixedly installed on the side of the connection port 310 of the installation plate 315. An explosion-proof top cover 318 is fixedly installed on the top inner wall of the explosion-proof sleeve 316 through a telescopic rod 317. The explosion-proof top cover 318 is used to hold the digestion vessel lid during microwave digestion.

[0050] Cylinder 314 pushes the explosion-proof sleeve 316 to quickly cover the digestion vessel, forming an explosion-proof protection to prevent safety accidents caused by excessive digestion pressure; Telescopic rod 317 pushes the explosion-proof top cover 318 to hold the bottle cap, which not only enhances the sealing effect but also prevents the bottle cap from falling off after the digestion vessel expands due to heat. At the same time, the digestion vessel can be actively pushed out after digestion is completed, without the need for manual removal, thus improving the convenience of operation.

[0051] Furthermore, several heating rods 319 are fixedly installed inside the operating chamber 101, located on one side of the digestion vessel mounting rack 308, for heating the acid removal step. A fan 320 is fixedly installed on the inner wall of the operating chamber 101, located on one side of the digestion vessel mounting rack 308, for exhausting and cooling the acid mist. An acid mist treatment device 11 is fixedly installed on the outer wall of the cabinet 1. The acid mist treatment device 11 is connected to the fan 320 through a pipe. The acid mist treatment device 11 is connected to the exhaust port of the ICP detector 9 through a pipe. The acid mist treatment device 11 is used to treat the acid mist generated during the experiment.

[0052] Heating rod 319 provides stable heating for acid removal from the digestion vessel, integrating acid removal and digestion, and shortening the experimental process. Fan 320 discharges acid mist from the device during acid removal and introduces it into acid mist treatment device 11. Acid mist treatment device 11 contains an acid gas filter box to neutralize the acid mist, preventing it from corroding device components or harming the health of operators. At the same time, continuing to exhaust gas after acid removal can quickly reduce the temperature of the digestion vessel, facilitating subsequent sample aspiration by the aspiration head 410, avoiding the influence of high temperature on sample properties, and ensuring detection accuracy. During plasma excitation, the high temperature causes the acid in the solution to turn into acid mist. Acid mist treatment device 11 is connected to the exhaust port of ICP detector 9 through a pipe, guiding the acid mist during excitation into acid mist treatment device 11 to avoid damaging the instrument.

[0053] Furthermore, a magnetron 7 is fixedly installed inside the digestion chamber 102, located on one side of the connection port 310, for generating microwaves during the digestion process, and a metal plate 8 is fixedly installed on the inner wall of the digestion chamber 102 for reflecting microwaves.

[0054] The magnetron 7 generates microwaves to provide energy for sample digestion. The metal plate 8 reflects the microwaves, making the microwave distribution in the digestion chamber 102 uniform, avoiding insufficient local digestion and improving sample digestion efficiency. The relatively sealed space of the digestion chamber 102, together with the metal plate 8, improves the safety of the device and the digestion effect.

[0055] Please see Figure 5-6 Furthermore, the automatic component 4 includes several claws 405 that are slidably mounted on the bottom of the partition plate 2 by a threaded rod transmission mechanism 2 402, and a through hole 406 is provided at the center of the claws 405; a mounting plate 3 409 is sleeved on the outside of the threaded rod transmission mechanism 2 402, and several suction heads 410 are fixedly mounted on the bottom of the mounting plate 3 409, and the suction heads 410 pass through the through hole 406.

[0056] Further, the automatic component 4 includes a movable plate 401, which is slidably connected to the bottom of the partition 2 via a threaded rod transmission mechanism 402. A cylinder 403 is fixedly installed on the side of the movable plate 401 away from the partition 2. An installation plate 404 is fixedly installed at the output end of the cylinder 403. Several claws 405 are fixedly installed on the side of the installation plate 404 facing the digestion component 3. An infrared sensor 407 is fixedly installed on the side of the installation plate 404 near the digestion vessel mounting bracket 308 to detect the position of the claws 405 and the digestion vessel. A telescopic rod 408 is fixedly installed on the side of the installation plate 404 away from the claws 405. The installation plate 409 is fixedly installed at the telescopic end of the telescopic rod 408. A suction head 410 passes through the installation plate 409 and is connected to a connecting pipe 411. The end of the connecting pipe 411 away from the suction head 410 is connected to a negative pressure pump.

[0057] The threaded rod transmission mechanism 402 drives the moving plate 401 to move, so that the chuck 405 avoids the rising path of the digestion component 3, thus avoiding interference between components; the infrared sensor 407 accurately positions the digestion vessel and test tube, ensuring the accuracy of the chuck 405 in loading and unloading the bottle cap and the liquid discharge of the suction head 410; the telescopic rod 408 adjusts the height of the suction head 410, and works with the negative pressure pump to achieve accurate sample aspiration and quantitative transfer, reducing sample loss and improving the accuracy of volume determination; the connecting pipe 411 connects to the negative pressure pump to provide stable power to the suction head 410.

[0058] Please see Figure 7 Furthermore, the volume-regulating component 5 includes a liquid level sensor 504 fixedly installed inside the test tube holder 503 for detecting the liquid level.

[0059] Furthermore, the volume-fixing component 5 also includes a support frame 501, which is fixedly installed on the side of the operating chamber 101 away from the digestion component 3. A tray 502 is rotatably mounted on the top surface of the support frame 501, and a test tube holder 503 is movably installed on the top surface of the tray 502.

[0060] The support frame 501 stably supports the tray 502, which is rotatable, making it easy to adjust the position of the test tube rack 503. The test tube rack 503 is movable and can be quickly replaced according to the test tube specifications. It is also easy to pre-fill different volumes of pure water, shortening the experiment time.

[0061] Please see Figure 7-8 Furthermore, the filter detection component 6 includes a mounting plate 604 that is slidably mounted on the inner wall of the cabinet 1 via an electric slide rail 601. A pipette 605 is fixedly mounted on the bottom of the mounting plate 604, and the pipette 605 is used to transfer the digested solution.

[0062] Furthermore, the electric slide rail 601 is fixedly installed on the inner wall of the operating chamber 101 near the volume-fixing component 5. A moving block 602 is slidably installed on the surface of the electric slide rail 601. A cylinder 603 is fixedly installed at the bottom of the moving block 602. The mounting plate 604 is fixedly installed at the output end of the cylinder 603. The suction tube 605 passes through the mounting plate 604, and one end of the suction tube is fixedly connected to a detection tube 607. The end of the detection tube 607 away from the suction tube 605 is connected to the detection port of the ICP detector 9. A sleeve 608 is fitted over the outside of several detection tubes 607 to gather the detection tubes 607. A filter sleeve 606 is snapped into the suction port of the detection tube 607 to filter the absorbed liquid.

[0063] The electric slide rail 601 works in conjunction with the moving block 602 to quickly move the pipette 605 above the test tube. The cylinder 603 adjusts the height of the pipette 605, allowing the filter sleeve 606 to extend into the test tube to aspirate the liquid. The snap-fit ​​design of the filter sleeve 606 facilitates quick replacement and avoids blockage that could affect the detection progress. The tube sleeve 608 gathers the detection tube 607 to prevent tangling or damage caused by messy tubing. The ICP detector 9 is directly connected to the detection tube 607 to achieve rapid detection of the sample liquid.

[0064] Furthermore, the ICP detector 9 is installed inside the equipment chamber 103 for detection. A waste liquid recovery tray 10 is fixedly installed on the bottom inner wall of the operating chamber 101. The ICP detector 9 and the waste liquid recovery tray 10 are connected by a waste liquid discharge pipe 12. The waste liquid discharge pipe 12 passes through the partition 2 and is located inside the operating chamber 101. The waste liquid recovery tray 10 is used to recover the waste liquid dripping from the suction tube 605 and the waste liquid generated after the ICP detector 9 finishes detection.

[0065] The ICP detector 9 is located in the equipment room 103, separated from the operating room 101, to prevent acid mist from corroding the precision components inside the detector. The waste liquid recovery tray 10 collects the waste liquid dripping from the suction head 410 and the suction tube 605, preventing the waste liquid from contaminating the bottom of the operating room 101. After the test is completed, the waste liquid generated is discharged directly from the ICP detector 9 into the waste liquid recovery tray 10 through the waste liquid discharge pipe 12. It can be poured out directly when changing test samples, which is convenient for subsequent centralized treatment and reduces the amount of cleaning work after the experiment.

[0066] In actual operation, when this device is used, the weighed sample is placed into the digestion vessel, the operating chamber 101 is opened, and the test tubes are placed inside the test tube rack 503. The test tubes contain different volumes of pure water for volume dilution. The digestion vessel is then placed on the rotating base 309 of the digestion vessel rack 308, so that the digestion vessel is fixed on the rotating base 309. After adding acid solution into the digestion vessel according to the sample requirements, the automatic component 4 is activated. The threaded rod transmission mechanism 402 drives the moving plate 401 to move. The infrared sensor 407 detects and aligns with the position of the digestion vessel cap. The cylinder 403 pushes the mounting plate 404 down. The chuck 405 drives the clamped cap to move towards the digestion vessel until it is close to the digestion vessel. The rotating base 309 drives the digestion vessel to rotate to tighten and seal the digestion vessel cap. Then, the threaded rod transmission mechanism 402 drives the automatic component 4 to move laterally, so that the automatic component 4 moves out of the rising path of the digestion component 3.

[0067] The threaded rod transmission mechanism 302 is activated, which drives the lifting plate 301 to rise. The lifting plate 301, through the connecting rod, drives the sealing base plate 303, tray 304, and digestion vessel mounting bracket 308 to rise, allowing the digestion vessel to enter the digestion chamber 102. The displacement sensor 313 monitors the rising position in real time. When the digestion vessel approaches the connection port 310 of the partition 2, the telescopic rod 312 retracts, driving the sealing plate 311 to move and open the connection port 310. The digestion vessel continues to rise, passing through the connection port 310 and entering the digestion chamber 102. The sealing ring 307 ensures the seal between the sealing base plate 303 and the connection port 310, ensuring the seal of the digestion chamber 102. The cylinder 314 is activated, pushing the mounting plate 315 downward, so that the explosion-proof sleeve 316 is fitted over the outside of the digestion vessel. The telescopic rod 317 pushes the explosion-proof top cover 318 downward to press against the digestion vessel cap, further enhancing the sealing effect and preventing the digestion vessel cap from falling off due to pressure.

[0068] The magnetron 7 is activated to generate microwaves, which are reflected by the metal plate 8 to ensure uniform microwave distribution within the digestion chamber 102, enabling efficient digestion of the sample. After digestion, cylinder 314 moves the explosion-proof sleeve 316 upward, and telescopic rod 317 pushes the explosion-proof top cover 318 out of the digestion vessel due to thermal expansion. Lifting plate 301 lowers the digestion vessel to the operating chamber 101, and displacement sensor 313 monitors the descent position in real time. When the digestion vessel leaves the connection port 310 of partition 2, telescopic rod 312 extends, moving the sealing plate 311 to close the connection port 310, ensuring the digestion chamber 102 is sealed and preventing acid mist from entering. Claw 405 fixes the bottle cap, and rotating base 309 rotates the digestion vessel, causing the bottle cap to open. Heating rod 319 is activated to expel acid from the digestion vessel, and fan 320 operates to exhaust and cool the acid mist, which then enters the acid mist treatment device 11 for treatment, while simultaneously reducing the temperature of the equipment after the acid expulsion is completed.

[0069] After the acid removal is completed, the threaded rod transmission mechanism 402 drives the moving plate 401 to the top of the digestion vessel. The cylinder 403 drives the jaws 405 to descend until they clamp the digestion vessel, providing precise positioning for the suction head 410 to be inserted into the digestion vessel. The telescopic rod 408 retracts, causing the mounting plate 409 to move down. The suction head 410 passes through the through hole 406 and extends into the digestion vessel. The negative pressure pump allows the suction head 410 to accurately draw different volumes of sample liquid. The jaws 405 are released, and the cylinder 403 drives the suction head 410 to rise. The threaded rod transmission mechanism 402 drives it to the top of the test tube, where the infrared sensor 407 provides precise positioning. The negative pressure pump discharges the liquid from the suction head 410 into the test tube. The liquid level sensor 504 detects the liquid level to achieve precise volume adjustment. The automatic component 4 completes its work and moves to the top of the waste liquid recovery tray 10.

[0070] The electric slide rail 601 drives the moving block 602 to move, the cylinder 3 603 pushes the mounting plate 4 604 down, the filter sleeve 606 of the suction port of the pipette 605 extends into the test tube, and is transported to the ICP detector 9 through the detection tube 607. The filter sleeve 606 filters impurities in the sample liquid. The filter sleeve 606 is easy to replace and there is no need to consider the problem of blockage. The tube sleeve 608 binds the detection tube 607 to avoid the pipeline being messy. During the experiment, the high temperature during plasma excitation will cause the acid in the solution to turn into acid mist. The acid mist during excitation is introduced into the acid mist treatment device 11 through the pipeline to avoid damage to the instrument. The waste liquid recovery tray 10 collects the waste liquid dripping from the suction head 410 and the pipette 605 when they are stationary to prevent contamination of the operating room 101. The waste liquid generated during the detection process is discharged directly from the ICP detector 9 into the waste liquid recovery tray 10 through the waste liquid discharge pipe 12. It can be poured out directly when changing the test sample.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An integrated experimental device for microwave digestion and precise volumetric filtration detection, comprising a cabinet, characterized in that: The cabinet is horizontally divided into an upper cavity and an operating chamber by a partition. The operating chamber houses a digestion assembly, an automatic assembly, a volume control assembly, and a filtration and detection assembly, with the automatic and filtration / detection assemblies located above them. The upper cavity is divided into a digestion chamber and an equipment chamber by a vertical plate, with the digestion chamber located above the digestion assembly. A magnetron is fixedly installed inside the digestion chamber, located on one side of the connection port, for generating microwaves during the digestion process. A metal plate is fixedly installed on the inner wall of the digestion chamber to reflect the microwaves. A waste liquid recovery tray is fixedly installed on the bottom inner wall of the operating chamber. An ICP detector is installed inside the equipment chamber for detection, and the ICP detector is connected to the waste liquid recovery tray via a waste liquid discharge pipe. The digestion assembly includes: a lifting plate slidably mounted on the inner wall of the operating room via a threaded rod transmission mechanism; a sealing base plate fixedly mounted on the lifting plate via a connecting rod; a tray slidably mounted on the inner wall of the operating room via the threaded rod transmission mechanism; a digestion vessel mounting bracket for fixing the digestion vessel is inserted into the top of the tray; several rotating bases are rotatably mounted on the bottom surface of the digestion vessel mounting bracket, the rotating bases being used to fix and rotate the digestion vessel; a connection port is provided on the partition plate above the digestion vessel mounting bracket; a sealing ring is fixedly installed between the surface of the sealing base plate and the outer wall of the tray, the sealing ring being used to seal the base plate and... The connection port is sealed; a sealing plate is slidably installed inside the partition to seal the connection port; an explosion-proof sleeve is fixedly installed on the inner wall of the upper cavity above the digestion vessel mounting frame via a cylinder, and an explosion-proof top cover for ejecting the digestion vessel is fixedly installed on the inner wall of the explosion-proof sleeve via a telescopic rod; the fixed end of the cylinder is fixedly installed on the top inner wall of the digestion chamber, and the output end of the cylinder is fixedly installed with an installation plate; a displacement sensor is fixedly installed at the bottom of the partition, located on the rising path of the digestion vessel mounting frame; a telescopic rod is fixedly installed between the sealing plate and the inner wall of the partition, and the telescopic rod is used to drive the sealing plate to seal the connection port; Several heating rods are fixedly installed inside the operating chamber, located on one side of the digestion tank rack, for heating the acid removal step. A fan is fixedly installed on the inner wall of the operating chamber, located on one side of the digestion tank rack, for exhausting and cooling the acid mist. An acid mist treatment device is fixedly installed on the outer wall of the cabinet, and the acid mist treatment device is connected to the fan through a pipe. The automatic component includes: several claws slidably mounted on the bottom of the partition via a threaded rod transmission mechanism 2, with a through hole at the center of each claw; a mounting plate 3 is sleeved on the outside of the threaded rod transmission mechanism 2, with several suction heads fixedly mounted on the bottom of the mounting plate 3, the suction heads passing through the through holes; a movable plate slidably connected to the bottom of the partition via the threaded rod transmission mechanism 2, with a cylinder 2 fixedly mounted on the side of the movable plate away from the partition, the output end of the cylinder 2 fixedly mounted with the mounting plate 2, an infrared sensor fixedly mounted on the side of the mounting plate 2 near the digestion tank mounting bracket for detecting the position of the claws and the digestion tank, and a telescopic rod 3 fixedly mounted on the side of the mounting plate 2 away from the claws; The volume control assembly includes a liquid level sensor fixedly installed inside the test tube holder for detecting the liquid level; The filtration and detection assembly includes a mounting plate four that is slidably mounted on the inner wall of the cabinet via an electric slide rail. A pipette is fixedly mounted on the bottom of the mounting plate four. The pipette is used to transfer the digested solution. The pipette passes through the mounting plate four, and a detection tube is fixedly connected to one end of the pipette. A filter sleeve is snapped into the suction port of the detection tube for filtering the absorbed liquid. A sleeve is fitted over the outside of several detection tubes for converging the detection tubes. A moving block is slidably mounted on the surface of the electric slide rail. A cylinder three is fixedly mounted on the bottom of the moving block. The mounting plate four is fixedly mounted on the output end of the cylinder three. The device includes the following specific steps: S1. Sample and apparatus placement: Place the weighed sample into the digestion vessel, and place test tubes containing diluted pure water in the test tube rack in the operating room; fix the digestion vessel on the rotating base of the digestion vessel rack of the digestion assembly, and add acid solution as needed; S2. Digestion vessel sealing: The automatic assembly is activated, the threaded rod transmission mechanism II drives the moving plate, the infrared sensor positions the digestion vessel cap, cylinder II pushes the mounting plate II, the jaws clamp the cap close to the digestion vessel, and the rotating base rotates to tighten the seal; the automatic assembly moves away from the digestion assembly's rising path; S3. Digestion vessel enters the digestion chamber: The threaded rod transmission mechanism drives the lifting plate to rise, which in turn moves the sealing base plate, tray 1, and digestion vessel mounting frame. The displacement sensor monitors the position. When the digestion vessel approaches the partition connection port, the telescopic rod 1 retracts to open the connection port, and the digestion vessel enters the digestion chamber. The sealing ring ensures a seal, the cylinder 1 pushes the mounting plate 1 to make the explosion-proof sleeve cover the digestion vessel, and the telescopic rod 2 pushes the explosion-proof top cover to tighten the bottle cap to enhance the seal and prevent it from falling off. S4. Microwave Digestion and Subsequent Processing: The magnetron is activated to generate microwaves, which are reflected by a metal plate to ensure uniform microwave distribution. After digestion, cylinder one and telescopic rod two drive the explosion-proof components to reset and eject the digestion tank. The lifting plate lowers the digestion tank to the operating chamber. The displacement sensor monitors the tank's movement. After the digestion tank leaves the connection port, telescopic rod one extends to close the connection port. The chuck secures the bottle cap, and the rotating base reverses to open the cap. The heating rod is activated to expel the acid, and the fan exhausts the gas to cool it down and discharge the acid mist to the acid mist treatment device. S5. Sample Transfer and Precise Volume Adjustment: The automatic component moves to the top of the digestion vessel via the threaded rod transmission mechanism two. Cylinder two drives the chuck to position the digestion vessel, and telescopic rod three drives mounting plate three. The suction head passes through the through hole and extends into the digestion vessel, and the negative pressure pump precisely aspirates the sample solution. It then moves to the top of the test tube, where an infrared sensor positions it. The negative pressure pump discharges the solution into the test tube, and a level sensor detects the liquid level to achieve precise volume adjustment. The automatic component then moves to the top of the waste liquid recovery tray. S6. Sample Liquid Detection: The electric slide rail drives the moving block, the cylinder three pushes the mounting plate four, the pipette suction port filter sleeve extends into the test tube, and the sample liquid is transported to the ICP detector through the detection tube; the filter sleeve filters impurities and is easy to replace, and the tube sleeve bundles the pipeline; the acid mist generated by plasma excitation is introduced into the acid mist treatment device through the pipeline. S7. Waste liquid treatment: The waste liquid recovery tray collects the waste liquid that drips from the suction head and pipette while stationary, as well as the detection waste liquid discharged from the ICP detector through the waste liquid discharge pipe. It can be poured out directly when changing samples; the entire process ensures the cleanliness of the operating room and avoids damage and contamination of the instrument.

2. The integrated experimental device for microwave digestion and precise volumetric filtration detection according to claim 1, characterized in that: The sealing base plate is located on the side of the lifting plate away from the threaded rod transmission mechanism. The tray is rotatably installed at the center of the surface of the sealing base plate. The surface of the tray has an annular groove for installing the digestion vessel mounting rack. The digestion vessel mounting rack is used to place the digestion vessel. A motor is fixedly installed at the bottom of the sealing base plate, and its output end passes through the sealing base plate and is connected to the tray.

3. The integrated experimental device for microwave digestion and precise volume filtration detection according to claim 1, characterized in that: Several of the aforementioned explosion-proof sleeves are fixedly installed on the mounting plate on one side of the connection port.

4. The integrated experimental device for microwave digestion and precise volume filtration detection according to claim 1, characterized in that: Several of the aforementioned claws are fixedly installed on the side of the mounting plate two facing the digestion assembly, the mounting plate three is fixedly installed on the telescopic end of the telescopic rod three, the liquid suction head passes through the mounting plate three and is connected to a connecting pipe, and the end of the connecting pipe away from the liquid suction head is connected to a negative pressure pump.

5. The integrated experimental device for microwave digestion and precise volume filtration detection according to claim 1, characterized in that: The volume-fixing component also includes a support frame, which is fixedly installed on the side of the operating chamber away from the digestion component. A second tray is rotatably mounted on the top surface of the support frame, and a test tube holder is movably mounted on the top surface of the second tray.

6. The integrated experimental device for microwave digestion and precise volume filtration detection according to claim 1, characterized in that: The electric slide rail is fixedly installed on the inner wall of the operating room near the volume-fixing component, and the end of the detection tube away from the suction tube is connected to the detection port of the ICP detector.

7. The integrated experimental device for microwave digestion and precise volumetric filtration detection according to claim 1, characterized in that: The acid mist treatment device is connected to the exhaust port of the ICP detector via a pipeline, and the acid mist treatment device is used to treat the acid mist generated during the experiment.

8. The integrated experimental device for microwave digestion and precise volume filtration detection according to claim 1, characterized in that: The waste liquid discharge pipe passes through the partition and is located in the operating room. The waste liquid recovery tray is used to recover the waste liquid dripping from the suction tube and the waste liquid generated after the ICP detector finishes testing.

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