A rapid detection device for composite mycotoxin samples with magnetic stirring function

Abstract

The present invention discloses a rapid detection device for composite mycotoxin samples with a magnetic stirring function, relating to the field of sensor detection technology. The device comprises a magnetic stirrer, a water tank, a sample cup, a cover, a double-station rotating arm module, a gland assembly, and a spectrum analyzer. The water tank is located on the magnetic stirrer, a heat dissipation assembly is provided on the outside of the water tank, a water exchange assembly is provided on the inside of the water tank, the water exchange assembly and the heat dissipation assembly are connected via a pipeline, the sample cup is placed in the water tank, magnetic particles are provided in the sample cup, the cover is located on the rear side of the magnetic stirrer, the double-station rotating arm module is mounted on the cover, the double-station rotating arm module comprises a first rotating arm and a second rotating arm, the gland assembly is connected to the first rotating arm, and the spectrum analyzer is arranged on the second rotating arm. Water in the water tank is pressed into a tube cage for circulation via a water pump, and heat generated by the magnetic stirrer is dissipated outward, thereby preventing the heat from affecting the activity of the composite mycotoxin sample.

Description

Technical Field

[0001] The invention relates to the technical field of sensor detection, in particular to a rapid detection device for composite mycotoxin samples with a magnetic stirring function. Background Art

[0002] Mycotoxins are common contaminants in food and agricultural products, and their rapid and accurate detection is crucial to food safety supervision. The current detection process usually includes two major stages: sample pretreatment and instrument analysis. During operation, the magnetic stirrer uses an electromagnetic coil to generate a rotating magnetic field to drive the magnetic particles to rotate. When the electromagnetic coil is energized, it generates heat, which is conducted to the sample and destroys the activity of the sample. Conventional mechanical stirring or vortex oscillation requires open operation. When rotating at high speed, the solution is prone to splashing and overflowing, causing sample loss and cross-contamination risks. Especially for high-viscosity samples, the increased stirring resistance further aggravates the droplet scattering, making it difficult to meet the cleanliness requirements of trace toxin detection. Existing technologies mostly use independent water baths, stirrers and detectors for step-by-step operation. The process is cumbersome and time-consuming, and it is difficult to adapt to the needs of rapid on-site screening. There is a lack of designs that effectively integrate temperature control, stirring and detection. Summary of the Invention

[0003] The object of the present invention is to provide a rapid detection device for composite mycotoxin samples with a magnetic stirring function to solve the problems raised in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rapid detection device for composite mycotoxin samples with a magnetic stirring function, comprising a magnetic stirrer, a water tank, a sample cup, a cover, a double-station rotating arm module, a gland assembly, and a spectrum analyzer, wherein the water tank is located on the magnetic stirrer, a heat dissipation assembly is provided on the outside of the water tank, a water change assembly is provided on the inside of the water tank, and the water change assembly and the heat dissipation assembly are connected by a pipe, the sample cup is placed in the water tank, magnetic particles are provided in the sample cup, the cover is located on the rear side of the magnetic stirrer, the double-station rotating arm module is installed on the cover, the double-station rotating arm module includes a first rotating arm and a second rotating arm, the gland assembly is connected to the first rotating arm, and the spectrum analyzer is arranged on the second rotating arm.

[0005] Furthermore, the double-station arm module includes a screw and a hollow column, the hollow column is installed on the top of the cover, the screw is located inside the hollow column, the bottom of the screw is coaxially installed with a first worm gear, the inner side of the bottom of the hollow column is rotatably installed with a first worm gear, the first worm gear is meshed with the first worm gear, and a servo motor is provided on the top of the cover, the servo motor is connected to the control system through a circuit, the motor shaft of the servo motor passes through the hollow column and is connected to the first worm gear, the servo motor drives the first worm gear to rotate, the first worm gear drives the screw to rotate, the screw drives the lifting block to slide along the hollow column through thread transmission, and the rotation direction of the first worm gear is controlled by the servo motor, thereby realizing the up and down sliding control of the lifting block, the operator places the sample cup into the water tank, and adjusts the experimental parameters on the magnetic stirrer 1.

[0006] Furthermore, the double-station arm module includes a lifting block, a vertical groove is provided on the side wall of the hollow column, a threaded hole is provided in the center of the lifting block, and a C-shaped groove is provided on the lifting block. The threaded hole cooperates with the screw, and the C-shaped groove is slidably connected to the hollow column. The first rotating arm and the second rotating arm are rotatably installed on the lifting block, and the second rotating arm is located above the first rotating arm. Servo hollow cup motors are provided at the junction of the first rotating arm and the second rotating arm and the lifting block. The two servo hollow cup motors respectively drive the first rotating arm and the second rotating arm to rotate on the lifting block. Before performing magnetic particle stirring, the first rotating arm rotates the pressure cover assembly to the top of the sample cup. As the lifting block drives the outer cover tube to press down, the cover contacts the cup mouth of the sample cup to form a sealed connection, thereby preventing the sample solution from splashing during the stirring process.

[0007] Furthermore, the pressure cover assembly includes an outer cover tube, a cover, a sliding column, an electric push rod and an electromagnet. The outer cover tube is connected to the first rotating arm, the sliding column is connected to the upper end of the cover, the sliding column is slidably installed inside the outer cover tube, a spring is provided between the outer cover tube and the cover, the electric push rod is provided inside the sliding column, the electric push rod is installed inverted, a stop hole is provided in the middle of the cover, the electromagnet is located in the stop hole, the electromagnet is connected to the piston rod of the electric push rod, the magnetic particles are attracted by the electromagnet, and the electric push rod pushes the electromagnet downward. After the electromagnet is powered off, the magnetic particles fall into the sample cup, and the electric push rod retracts the electromagnet into the stop hole. The magnetic stirrer drives the magnetic particles to rotate to disperse and stir the sample. After the stirring is completed, the magnetic particles need to be retracted, and the electric push rod moves the electromagnet close to the magnetic particles to suck out the magnetic particles.

[0008] Furthermore, a sealed cavity is provided at the top of the outer cover tube, and a circular plate is provided at the top of the sliding column. The circular plate is slidably and sealedly connected to the sealed cavity. A pressure sensor is provided inside the sealed cavity, and the pressure sensor is connected to the control system circuit. As the lifting block is further pressed downward, the position of the sliding column remains unchanged, the outer cover tube descends, the position of the sealed cavity moves downward, and the position of the circular plate remains unchanged. The space in the sealed cavity is compressed, and the pressure sensor detects the pressure increase inside the sealed cavity. By outputting an electronic signal, the servo motor stops rotating, the lifting block stops moving downward, the spring is compressed a certain length, and the lid is firmly pressed against the cup mouth of the sample cup. After stirring is completed, the lifting block rises, and the first rotating arm and the second rotating arm interchange positions, so that the spectrometer is aligned with the sample cup to quickly analyze the stirred solution.

[0009] Furthermore, the heat dissipation assembly includes a tube cage, a small motor, a main shaft, a driving bevel gear and a driven bevel gear ring. The main shaft is connected to the motor shaft of the small motor, and the main shaft passes through the water tank. The driving bevel gear is installed on the main shaft, and the driven bevel gear ring is rotatably installed on the outside of the water tank. A number of blades are evenly distributed in a ring shape on the driven bevel gear ring. The driving bevel gear is meshed with the driven bevel gear ring. The tube cage is arranged on the outer ring of the driven bevel gear ring. During operation, the magnetic stirrer uses an electromagnetic coil to generate a rotating magnetic field to drive the magnetic particles to rotate. When the electromagnetic coil is energized, it generates heat, and the heat is conducted to the water in the water tank. The small motor is energized to drive the main shaft to rotate. The main shaft drives the driving bevel gear and the second worm to rotate synchronously. The driving bevel gear drives the driven bevel gear ring to rotate. The driven bevel gear ring drives all the blades to rotate, and the blades exhaust air to the outside to cool the tube cage.

[0010] Furthermore, the water-changing assembly includes a second worm, a second worm gear, a crank, a ball pair connecting rod and a water pumping cylinder, the second worm is installed on the main shaft, the second worm gear is rotatably installed in the water tank, the second worm gear is meshed with the second worm, the crank is coaxially connected with the second worm gear, the water pumping cylinder is fixedly arranged in the water tank, a ball groove is provided on the outer side of the piston of the water pumping cylinder, and a ball groove is also provided on the side of the crank away from the second worm gear, the ball pair connecting rod is connected between the crank and the water pumping cylinder piston through the ball pair, the axis line of the water pumping cylinder is parallel to the axis line of the second worm gear and does not overlap, the water pumping cylinder is provided with a water inlet hole and a water outlet hole, and the water inlet hole and the water outlet hole are both provided with a one-way rubber tongue, the second worm drives the second worm gear to rotate, the second worm gear drives the crank to rotate, the crank pulls the piston of the water pumping cylinder through the ball pair connecting rod, and the water pumping cylinder presses the water in the water tank into the fracture pipe.

[0011] Furthermore, the tube cage is composed of a fractured tube, a ring tube and a plurality of heat dissipation tubes. The fractured tube is located below the ring tube, and the plurality of heat dissipation tubes are evenly distributed in a ring shape and connected between the fractured tube and the ring tube. The fractured tube is connected to the water outlet of the pump through a pipe, and the ring tube is connected to the upper part of the water tank through several pipes. The water in the fractured tube enters the ring tube through the heat dissipation tube, and the water in the ring tube flows back to the water tank. The rotating blades dissipate heat from the heat dissipation tube, and dissipate the heat generated by the magnetic stirrer to the outside, thereby preventing the heat from affecting the activity of the composite mycotoxin sample.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Through the setting of the water exchange component and the heat dissipation component, the driven bevel gear ring is used to drive all the blades to rotate. The blades exhaust air to the outside to cool the tube cage. The water pump presses the water in the water tank into the tube cage for circulation, dissipating the heat generated by the magnetic stirrer to the outside, preventing the heat from affecting the activity of the composite mycotoxin sample.

[0014] 2. Through the setting of the double-station rotating arm module, before magnetic particle stirring, the first rotating arm rotates the cover assembly to the top of the sample cup. As the lifting block drives the outer cover tube downward, the cover contacts the cup mouth of the sample cup, forming a sealed connection, preventing the sample solution from splashing during the stirring process. After stirring is completed, the first and second rotating arms swap positions, allowing the spectrometer to align with the sample cup for rapid analysis of the stirred solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention;

[0016] Figure 2 Schematic diagram of the split structure of the present invention Figure 1 ;

[0017] Figure 3 Schematic diagram of the split structure of the present invention Figure 2 ;

[0018] Figure 4 It is a structural schematic diagram of the cover part of the present invention;

[0019] Figure 5 This is a schematic diagram of the split structure of the double-station rotating arm module of the present invention;

[0020] Figure 6 Schematic diagram of the internal structure of the water tank of the present invention;

[0021] Figure 7 The structure of the heat dissipation component of the present invention is schematically shown. Figure 1 ;

[0022] Figure 8The structure of the heat dissipation component of the present invention is schematically shown. Figure 2 .

[0023] In the figure: 1. magnetic stirrer; 2. water tank; 3. sample cup; 4. tube cage; 401. fracture tube; 402. ring tube; 403. heat dissipation tube; 501. small motor; 502. main shaft; 601. driving bevel gear; 602. second worm; 701. second worm gear; 702. crank; 8. ball pair connecting rod; 9. pumping cylinder; 10. driven bevel gear ring; 11. blade; 12. cover; 13. screw; 14. hollow column; 15. lifting block; 16. first worm gear; 17. first worm; 18. servo motor; 19. first rotating arm; 20. second rotating arm; 21. spectrum analyzer; 22. outer cover; 23. sealing chamber; 24. cover; 25. sliding column; 26. spring; 27. electric push rod; 28. electromagnet; 29. ​​magnetic particles. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example: Figures 1-8 As shown, the present invention provides a technical solution, a rapid detection device for composite mycotoxin samples with a magnetic stirring function, comprising a magnetic stirrer 1, a water tank 2, a sample cup 3, a cover 12, a double-station arm module, a pressure cover assembly and a spectrum analyzer 21, the water tank 2 is located on the magnetic stirrer 1, a heat dissipation assembly is provided on the outside of the water tank 2, a water change assembly is provided inside the water tank 2, the water change assembly and the heat dissipation assembly are connected through a pipe, the sample cup 3 is placed in the water tank 2, magnetic particles 29 are provided in the sample cup 3, the cover 12 is located on the rear side of the magnetic stirrer 1, the double-station arm module is installed on the cover 12, the double-station arm module includes a first arm 19 and a second arm 20, the pressure cover assembly is connected to the first arm 19, and the spectrum analyzer 21 is provided on the second arm 20. The operator places the sample cup 3 in the water tank 2 and adjusts the experimental parameters on the magnetic stirrer 1.

[0026] The double-station arm module includes a screw 13 and a hollow column 14. The hollow column 14 is installed on the top of the cover 12. The screw 13 is located inside the hollow column 14. The bottom of the screw 13 is coaxially installed with a first worm gear 16. The inner side of the bottom of the hollow column 14 is rotatably installed with a first worm 17. The first worm 17 is meshed with the first worm gear 16. A servo motor 18 is provided on the top of the cover 12. The servo motor 18 is connected to the control system through a circuit. The motor shaft of the servo motor 18 passes through the hollow column 14 and is connected to the first worm 17. The workstation arm module includes a lifting block 15, a vertical groove is provided on the side wall of the hollow column 14, a threaded hole is provided in the center of the lifting block 15, and a C-shaped groove is also provided on the lifting block 15. The threaded hole cooperates with the screw 13, and the C-shaped groove is slidably connected to the hollow column 14. The first rotating arm 19 and the second rotating arm 20 are rotatably installed on the lifting block 15, and the second rotating arm 20 is located above the first rotating arm 19. Servo hollow cup motors (not shown in the figure) are provided at the junction of the first rotating arm 19 and the second rotating arm 20 with the lifting block 15.

[0027] The servo motor 18 drives the first worm 17 to rotate, the first worm 17 drives the first worm gear 16 to rotate, the first worm gear 16 drives the screw 13 to rotate, and the screw 13 drives the lifting block 15 to slide along the hollow column 14 through thread transmission. The servo motor 18 controls the rotation direction of the first worm 17, thereby realizing the up and down sliding control of the lifting block 15. The two servo hollow cup motors drive the first rotating arm 19 and the second rotating arm 20 to rotate on the lifting block 15 respectively. Before stirring the magnetic particles 29, the first rotating arm 19 rotates the pressure cover assembly to the top of the sample cup 3. As the lifting block 15 drives the outer cover tube 22 to press down, the cover 24 contacts the cup mouth of the sample cup 3 to form a seal. The sealing connection prevents the sample solution from splashing during the stirring process. As the lifting block 15 is further pressed down, the position of the sliding column 25 remains unchanged, the outer cover tube 22 descends, the position of the sealed cavity 23 moves downward, and the position of the circular plate remains unchanged. The space of the sealed cavity 23 is compressed, and the pressure sensor detects the pressure increase inside the sealed cavity 23. By outputting an electronic signal, the servo motor 18 stops rotating, the lifting block 15 stops moving downward, the spring 26 is compressed a certain length, and the cover 24 is firmly pressed against the cup mouth of the sample cup 3. After the stirring is completed, the lifting block 15 rises, and the first rotating arm 19 and the second rotating arm 20 exchange positions, so that the spectrum analyzer 21 is aimed at the sample cup 3 to quickly analyze the stirred solution.

[0028] The pressure cover assembly includes an outer cover tube 22, a cover 24, a slide column 25, an electric push rod 27 and an electromagnet 28. The outer cover tube 22 is connected to the first rotating arm 19, the slide column 25 is connected to the upper end of the cover 24, the slide column 25 is slidably installed inside the outer cover tube 22, a spring 26 is provided between the outer cover tube 22 and the cover 24, the electric push rod 27 is provided inside the slide column 25, the electric push rod 27 is installed inverted, a stop hole is provided in the middle of the cover 24, the electromagnet 28 is located in the stop hole, the electromagnet 28 is connected to the piston rod of the electric push rod 27, a sealing chamber 23 is provided at the top of the outer cover tube 22, and the top of the slide column 25 is provided. A circular plate is provided, which is slidably and sealedly connected to the sealed chamber 23. A pressure sensor (not shown in the figure) is provided inside the sealed chamber 23. The pressure sensor is connected to the control system circuit. The magnetic particles 29 are attracted by the electromagnet 28. The electric push rod 27 pushes the electromagnet 28 downward. After the electromagnet 28 is powered off, the magnetic particles 29 fall into the sample cup 3. The electric push rod 27 retracts the electromagnet 28 into the stop hole. The magnetic stirrer 1 drives the magnetic particles 29 to rotate to disperse and stir the sample. After the stirring is completed, the magnetic particles 29 need to be retracted. The electric push rod 27 moves the electromagnet 28 close to the magnetic particles 29 to suck out the magnetic particles 29.

[0029] The heat dissipation assembly includes a tube cage 4, a small motor 501, a main shaft 502, a driving bevel gear 601 and a driven bevel gear ring 10. The main shaft 502 is connected to the motor shaft of the small motor 501, the main shaft 502 passes through the water tank 2, the driving bevel gear 601 is installed on the main shaft 502, and the driven bevel gear ring 10 is rotatably installed on the outside of the water tank 2. A number of blades 11 are evenly distributed in an annular shape on the driven bevel gear ring 10. The driving bevel gear 601 is meshed with the driven bevel gear ring 10. The tube cage 4 is arranged on the outer ring of the driven bevel gear ring 10. The tube cage 4 is composed of a fracture tube 401, a ring tube 402 and a number of heat dissipation tubes 403. The fracture tube 401 is located below the ring tube 402, and the several heat dissipation tubes 403 are evenly distributed in an annular shape. The cloth is connected between the broken pipe 401 and the ring pipe 402. The broken pipe 401 is connected to the water outlet of the water pump 9 through a pipe. The ring pipe 402 is connected to the upper part of the water tank 2 through several pipes. The magnetic stirrer 1 uses the electromagnetic coil to generate a rotating magnetic field to drive the magnetic particles 29 to rotate during operation. When the electromagnetic coil is energized, heat is generated, and the heat is conducted to the water in the water tank 2. The small motor 501 is energized to drive the main shaft 502 to rotate. The main shaft 502 drives the active bevel gear 601 and the second worm 602 to rotate synchronously. The active bevel gear 601 drives the driven bevel gear ring 10 to rotate. The driven bevel gear ring 10 drives all the blades 11 to rotate. The blades 11 are exhausted to the outside to cool the tube cage 4.

[0030] The water changing assembly includes a second worm 602, a second worm gear 701, a crank 702, a ball pair connecting rod 8 and a water pumping cylinder 9. The second worm 602 is mounted on the main shaft 502, and the second worm gear 701 is rotatably mounted in the water tank 2. The second worm gear 701 is meshed with the second worm 602, and the crank 702 is coaxially connected to the second worm gear 701. The water pumping cylinder 9 is fixedly arranged in the water tank 2. A ball groove is provided on the outer side of the piston of the water pumping cylinder 9, and a ball groove is also provided on the side of the crank 702 away from the second worm gear 701. The ball pair connecting rod 8 is connected between the crank 702 and the piston of the water pumping cylinder 9 through a ball pair. The axis of the water pumping cylinder 9 is parallel to the axis of the second worm gear 701 and does not overlap. The water pumping cylinder 9 is provided with a water inlet and a water outlet, and a one-way rubber tongue is provided at the water inlet and the water outlet. The second worm 602 drives the second worm gear 701 to rotate, and the second worm gear 701 drives the crank 702 to rotate. The crank 702 pulls the piston of the water pumping cylinder 9 through the ball-pair connecting rod 8. The water in the water tank 2 is pressed into the fracture pipe 401. The water in the fracture pipe 401 enters the annular pipe 402 through the heat dissipation pipe 403. The water in the annular pipe 402 flows back into the water tank 2. The rotating blade 11 dissipates heat from the heat dissipation pipe 403, dissipating the heat generated by the magnetic stirrer 1 to the outside, thereby preventing the heat from affecting the activity of the composite mycotoxin sample.

[0031] The working principle of the present invention is as follows: the operator places the sample cup 3 into the water tank 2, and adjusts the experimental parameters on the magnetic stirrer 1. The servo motor 18 drives the first worm 17 to rotate, and the first worm 17 drives the first worm gear 16 to rotate. The first worm gear 16 drives the screw 13 to rotate. The screw 13 drives the lifting block 15 to slide along the hollow column 14 through thread transmission. The rotation direction of the first worm 17 is controlled by the servo motor 18, thereby realizing the up and down sliding control of the lifting block 15. The two servo hollow cup motors respectively drive the first rotating arm 19 and the second rotating arm 20 to rotate on the lifting block 15. Before stirring the magnetic particles 29, the first rotating arm 19 rotates the pressure cover assembly to the top of the sample cup 3. As the lifting block 15 drives the outer cover tube 22 Pressing down, the lid 24 contacts the cup mouth of the sample cup 3, forming a sealed connection, preventing the sample solution from splashing during the stirring process. As the lifting block 15 is further pressed down, the position of the sliding column 25 remains unchanged, the outer cover tube 22 descends, the position of the sealed cavity 23 moves downward, and the position of the circular plate remains unchanged. The space in the sealed cavity 23 is compressed, and the pressure sensor detects the pressure increase inside the sealed cavity 23. By outputting an electronic signal, the servo motor 18 stops rotating, the lifting block 15 stops moving downward, the spring 26 is compressed a certain length, and the lid 24 is firmly pressed against the cup mouth of the sample cup 3. After the stirring is completed, the lifting block 15 rises, and the first rotating arm 19 and the second rotating arm 20 exchange positions, so that the spectrum analyzer 21 is aimed at the sample cup 3 for rapid analysis of the stirred solution.

[0032] The magnetic particles 29 are attracted by the electromagnet 28, and the electric push rod 27 pushes the electromagnet 28 downward. After the electromagnet 28 is powered off, the magnetic particles 29 fall into the sample cup 3. The electric push rod 27 retracts the electromagnet 28 into the stop hole. The magnetic stirrer 1 drives the magnetic particles 29 to rotate to disperse and stir the sample. After stirring, the magnetic particles 29 need to be retracted. The electric push rod 27 moves the electromagnet 28 close to the magnetic particles 29 to suck the magnetic particles 29 out.

[0033] During operation, the magnetic stirrer 1 uses an electromagnetic coil to generate a rotating magnetic field to drive the magnetic particles 29 to rotate. When the electromagnetic coil is energized, heat is generated, and the heat is conducted to the water in the water tank 2. The small motor 501 is energized to drive the main shaft 502 to rotate, and the main shaft 502 drives the active bevel gear 601 and the second worm 602 to rotate synchronously. The active bevel gear 601 drives the driven bevel gear ring 10 to rotate, and the driven bevel gear ring 10 drives all the blades 11 to rotate. The blades 11 exhaust air to the outside to cool the tube cage 4. The second worm 602 The second worm gear 701 is driven to rotate, and the second worm gear 701 drives the crank 702 to rotate. The crank 702 pulls the piston of the water pump 9 through the ball-pair connecting rod 8. The water pump 9 presses the water in the water tank 2 into the fracture pipe 401. The water in the fracture pipe 401 enters the ring pipe 402 through the heat dissipation pipe 403. The water in the ring pipe 402 flows back to the water tank 2. The rotating blade 11 dissipates heat from the heat dissipation pipe 403, dissipating the heat generated by the magnetic stirrer 1 to the outside, thereby preventing the heat from affecting the activity of the composite mycotoxin sample.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A rapid detection device for composite mycotoxin samples with magnetic stirring function, characterized by: The invention comprises a magnetic stirrer (1), a water tank (2), a sample cup (3), a cover (12), a double-station rotating arm module, a pressure cover assembly and a spectrum analyzer (21), wherein the water tank (2) is located on the magnetic stirrer (1), a heat dissipation assembly is provided on the outside of the water tank (2), a water change assembly is provided on the inside of the water tank (2), and the water change assembly and the heat dissipation assembly are connected via a pipe, the sample cup (3) is placed in the water tank (2), and magnetic particles (29) are provided in the sample cup (3), the cover (12) is located on the rear side of the magnetic stirrer (1), the double-station rotating arm module is installed on the cover (12), the double-station rotating arm module comprises a first rotating arm (19) and a second rotating arm (20), the pressure cover assembly is connected to the first rotating arm (19), and the spectrum analyzer (21) is provided on the second rotating arm (20); The heat dissipation assembly comprises a tube cage (4) and a driven bevel gear ring (10), wherein the driven bevel gear ring (10) is rotatably mounted on the outside of the water tank (2), a plurality of blades (11) are evenly distributed in an annular shape on the driven bevel gear ring (10), and the tube cage (4) is arranged on the outer ring of the driven bevel gear ring (10); The water exchange assembly comprises a second worm (602), a second worm gear (701), a crank (702), a ball-pair connecting rod (8), and a water pumping cylinder (9); the crank (702) is coaxially connected to the second worm gear (701); the ball-pair connecting rod (8) is connected between the crank (702) and the piston of the water pumping cylinder (9) via a ball pair; and the water pumping cylinder (9) is provided with a water inlet hole and a water outlet hole; The tube cage (4) is composed of a broken tube (401), a ring tube (402) and a plurality of heat dissipation tubes (403); the broken tube (401) is connected to the water outlet of the pumping cylinder (9) through a pipe, and the ring tube (402) is connected to the upper part of the water tank (2) through a plurality of pipes; The heat dissipation assembly further comprises a small motor (501), a main shaft (502), and a driving bevel gear (601); the main shaft (502) is connected to the motor shaft of the small motor (501); the main shaft (502) passes through the water tank (2); the driving bevel gear (601) is mounted on the main shaft (502); and the driving bevel gear (601) is meshed with the driven bevel gear ring (10); The second worm (602) is mounted on the main shaft (502), the second worm wheel (701) is rotatably mounted in the water tank (2), the second worm wheel (701) is meshed with the second worm (602), and the water pump (9) is fixedly arranged in the water tank (2); A ball groove is provided on the outer side of the piston of the water pumping cylinder (9), and a ball groove is also provided on the side of the crank (702) away from the second worm gear (701). The axis of the water pumping cylinder (9) is parallel to the axis of the second worm gear (701) and does not overlap. One-way rubber tongues are provided at both the water inlet and the water outlet. A plurality of heat dissipation pipes (403) are evenly distributed in a ring shape and connected between the fracture pipe (401) and the ring pipe (402).

2. The rapid detection device for composite mycotoxin samples with magnetic stirring function according to claim 1, characterized in that: The double-station arm module includes a screw (13) and a hollow column (14), wherein the hollow column (14) is mounted on the top of the housing (12), the screw (13) is located inside the hollow column (14), a first worm gear (16) is coaxially mounted on the bottom of the screw (13), a first worm gear (17) is rotatably mounted on the inner side of the bottom of the hollow column (14), the first worm gear (17) is meshedly connected with the first worm gear (16), a servo motor (18) is provided on the top of the housing (12), the servo motor (18) is connected to the control system through a circuit, and a motor shaft of the servo motor (18) passes through the hollow column (14) and is connected to the first worm gear (17).

3. The rapid detection device for composite mycotoxin samples with magnetic stirring function according to claim 2, characterized in that: The double-station rotating arm module includes a lifting block (15), a vertical groove is provided on the side wall of the hollow column (14), a threaded hole is provided at the center of the lifting block (15), and a C-shaped groove is also provided on the lifting block (15), the threaded hole is matched with the screw (13), and the C-shaped groove is slidably connected to the hollow column (14), the first rotating arm (19) and the second rotating arm (20) are rotatably installed on the lifting block (15), the second rotating arm (20) is located above the first rotating arm (19), and a servo hollow cup motor is provided at the connection between the first rotating arm (19) and the second rotating arm (20) and the lifting block (15).

4. The rapid detection device for composite mycotoxin samples with magnetic stirring function according to claim 3, characterized in that: The pressure cover assembly includes an outer cover tube (22), a cover (24), a slide column (25), an electric push rod (27) and an electromagnet (28), wherein the outer cover tube (22) is connected to the first rotating arm (19), the slide column (25) is connected to the upper end of the cover (24), the slide column (25) is slidably installed inside the outer cover tube (22), a spring (26) is provided between the outer cover tube (22) and the cover (24), the electric push rod (27) is provided inside the slide column (25), the electric push rod (27) is invertedly installed, a stop hole is provided in the middle of the cover (24), the electromagnet (28) is located in the stop hole, and the electromagnet (28) is connected to the piston rod of the electric push rod (27).

5. The rapid detection device for composite mycotoxin samples with magnetic stirring function according to claim 4, characterized in that: A sealed cavity (23) is provided at the top of the outer cover tube (22), a circular plate is provided at the top of the sliding column (25), the circular plate is connected to the sealed cavity (23) in a sliding and sealing manner, a pressure sensor is provided inside the sealed cavity (23), and the pressure sensor is connected to the control system circuit.

6. The rapid detection device for composite mycotoxin samples with magnetic stirring function according to claim 1, characterized in that: The fractured tube (401) is located below the ring tube (402).

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