Device for detecting mycotoxin

Abstract

The invention relates to the technical field of mycotoxin detection, in particular to a mycotoxin detection device which comprises a pretreatment tank, a feeding port formed in one side of the outer wall of the pretreatment tank and a discharging port formed in the bottom of the pretreatment tank, and a driving box and a solution tank are fixed to the top of the pretreatment tank; a stirring assembly is arranged in the pretreatment tank, and a solution spraying assembly is arranged on one side of the stirring assembly. A movable push rod gear transmission mechanism is arranged in the stirring shaft, the inclination angle of the stirring rod can be adjusted along with reciprocating motion of the stirring shaft, when the stirring shaft moves up and down, a push block pushes the movable push rod to compress a third damping spring, and the movable push rod drives a gear to rotate through a tooth groove, so that the inclination angle of the stirring rod is changed; the contact area between the stirring rod and grains can be dynamically adjusted, differential stirring is realized at different height positions of the stirring shaft, and the stirring uniformity and efficiency are further improved.

Description

Technical Field

[0001] This invention relates to the field of mycotoxin detection technology, specifically to a device for mycotoxin detection. Background Technology

[0002] Grains and feed may be contaminated by fungi during growth, storage, and transportation, resulting in various mycotoxins. These toxins not only affect the quality and taste of grains and feed but also possess strong toxicity and carcinogenicity, posing a serious threat to human and animal health with long-term ingestion. For example, common mycotoxins such as aflatoxin and vomiting toxin pose potential health hazards to humans. Therefore, accurate and rapid detection of mycotoxins is crucial.

[0003] Mycotoxins are metabolic products produced by fungi during their growth in food or feed, posing significant health risks to both humans and animals. Currently, the main methods for detecting mycotoxins include high-performance liquid chromatography (HPLC), enzyme-linked immunosorbent assay (ELISA), and thin-layer chromatography (TLC). These methods all require sample pretreatment during the detection process.

[0004] In the prior art, CN215843383U discloses a grain mycotoxin pretreatment device, relating to the field of food testing technology. This application includes a housing with a feed inlet at the top and an inclined sieve plate below it. Below the sieve plate is an open grinding cylinder with a discharge pipe fixedly connected to its bottom. A rotating shaft is rotatably connected inside the grinding cylinder, its lower end passing through the cylinder and rotatably connected to the bottom of the housing. Multiple crushing blades are fixedly connected to the rotating shaft, and a grinding disc is also fixedly connected to it. A filter plate is positioned between the grinding disc and the crushing blades. A first motor is fixedly connected to the bottom of the housing, and a first gear is fixedly connected to the motor's shaft. A second gear, meshing with the first gear, is fixedly connected to the rotating shaft. This invention achieves thorough grain pretreatment by screening grain impurities through a sieve plate and then crushing and grinding the screened grain.

[0005] The following problems still exist with current mycotoxin pretreatment devices: The aforementioned stirring structure may only be able to perform single-rotation stirring. The position and angle of the stirring rod are fixed, which cannot cover grains at different heights and areas of the pretreatment tank. Furthermore, it lacks reciprocating motion or angle changes, resulting in insufficient shearing and mixing force on the grains. This leads to insufficient contact between the grains and the detection solution, affecting the pretreatment efficiency. In particular, it is difficult to effectively turn over the grains at the bottom, which can easily cause insufficient local stirring. Summary of the Invention

[0006] The purpose of this invention is to provide a device for detecting fungal toxins, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A device for detecting mycotoxins includes a pretreatment tank, an inlet on one side of the outer wall of the pretreatment tank, and an outlet at the bottom of the pretreatment tank. A drive box and a solution tank are fixed to the top of the pretreatment tank. The pretreatment tank is equipped with a stirring assembly inside, and a solution spraying assembly is provided on one side of the stirring assembly; The stirring assembly includes: An agitator shaft is installed inside the pretreatment tank. A connecting sleeve is fixed to the top of the agitator shaft. A motor shaft passes through the inside of the connecting sleeve. A motor is connected to the top of the motor shaft. The motor is fixed to the inside of the drive box by bolts. The stirring shaft is equipped with a movable push rod inside. Three toothed grooves are opened on both sides of the outer wall of the movable push rod. The toothed grooves mesh with gears. The output shaft of the gears is fixed with a stirring rod. Several material-pulling plates are fixed on both sides of the outer wall of the stirring rod.

[0008] Preferably, the inner wall of the connecting bushing is provided with insertion holes on both sides, and a fixing block is embedded inside the insertion hole, and the fixing block is fixed to the outer wall of the motor shaft; A first bevel gear is fitted around the outside of the motor shaft. A second bevel gear meshes with both sides of the first bevel gear. A drive shaft is fixed in the middle of the second bevel gear. A protective plate and an eccentric wheel are fitted on both sides of the drive shaft. A bearing is fitted at the connection between the protective plate and the drive shaft. The top of the protective plate is fixed to the inner wall of the drive box. The drive shaft is fixedly connected to the eccentric wheel.

[0009] Preferably, a movable plate is provided at the bottom of the drive box, and a bearing is sleeved between the connecting bushing and the movable plate. The connecting bushing is T-shaped, and side blocks are fixed on both sides of the movable plate. A semi-circular protrusion is integrally fixed on the top of the side block, and the protrusion contacts the eccentric wheel. The movable plate has a first support rod and a second support rod on both sides of its bottom. A first damping spring connects the first support rod and the second support rod. The top of the first support rod is fixed to the bottom of the movable plate, and the bottom of the second support rod is fixed to the top of the pretreatment tank.

[0010] Preferably, a fixed bottom sleeve is fitted at the bottom of the stirring shaft, and a second damping spring is provided inside the fixed bottom sleeve. One end of the stirring shaft inserted into the fixed bottom sleeve is adapted to the inner wall of the fixed bottom sleeve. The bottom of the movable push rod is fixed with a push block, and the top of the movable push rod is connected with a third damping spring. Both ends of the push block are fitted with limiting grooves, which are opened on the inner wall of the stirring shaft. One end of the push block passing through the limiting groove is fixedly connected to the fixed bottom sleeve.

[0011] Preferably, the solution spraying assembly includes: An active cavity is formed inside the solution tank, and two solution chambers are provided, with a partition between the two solution chambers; The movable cavity is equipped with a crankshaft. A second sprocket is fixed to one end of the crankshaft. A chain is sleeved on the outside of the second sprocket. A first sprocket is sleeved on the bottom of the chain. The first sprocket is fixedly connected to a drive shaft. The drive shaft is driven by the crankshaft through the first sprocket, the chain, and the second sprocket. The crankshaft is externally fitted with two bushings. A connecting rod is fixed to the bottom of each bushing. A fixed guide rod is connected to the bottom of each connecting rod via a shaft. A piston plate is fixed to the bottom of the fixed guide rod. The piston plate is adapted to the solution chamber.

[0012] Preferably, the piston plate has two through holes inside, and a flap is provided inside the through holes. One side of the flap is movably connected to the piston plate via a shaft. Side rods are provided on both sides of the through holes. First sliding grooves are provided on both sides of the outer wall of the flap. One end of the side rod is movably connected to the piston plate via a shaft, and the other end is provided with a sliding shaft adapted to the first sliding groove.

[0013] Preferably, a first connecting pipe is connected to one side of one of the solution chambers, and a sealing sleeve is connected to one end of the first connecting pipe. The sealing sleeve is fitted over the outside of the stirring shaft. The stirring shaft has a groove in the area corresponding to the sealing sleeve. A sealing ring is fitted between the stirring shaft and the sealing sleeve, and the sealing ring is fixedly connected to the stirring shaft.

[0014] Preferably, a cross arm is installed at the top inside the pretreatment tank, a movable groove is opened inside the cross arm, a movable block is set inside the movable groove, the movable block is hollow inside, an atomizing nozzle is connected to the bottom of the movable block, a second connecting pipe is connected to one end of the movable block, the movable block is connected to the liquid guiding chamber through the second connecting pipe, and the liquid guiding chamber is connected to the sealing sleeve through the groove.

[0015] Preferably, a tension spring is sleeved on the outside of the second connecting tube. One end of the tension spring is fixedly connected to the cross arm, and the other end is fixedly connected to the movable block. A second sliding groove is provided on both sides of the inner wall of the cross arm, and a slider is fixed on both sides of the outer wall of the movable block. The slider is slidably connected to the second sliding groove and is partially adapted.

[0016] Preferably, another solution chamber is connected to a third connecting pipe, and the other solution chamber is connected to the fixed bottom sleeve through the third connecting pipe; Four hollow support rods are fixed to the outer wall of the fixed bottom sleeve. An annular plate is provided at the bottom of the pretreatment tank. Four bottom rods are connected to the inner wall of the annular plate. The hollow support rods, annular plate and bottom rods are hollow inside. The hollow support rods, annular plate and bottom rods are connected. Several first bottom holes are provided in a ring shape on the inner wall of the annular plate. Several second bottom holes are provided on the outer wall of the bottom rods.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The invention features a motor that drives a first bevel gear to rotate a second bevel gear and a transmission shaft. An eccentric wheel pushes a movable plate up and down via a protrusion, while the first damping spring provides elastic support to maintain contact. This design allows the stirring shaft to rotate while simultaneously undergoing vertical reciprocating motion. This design overcomes the limitation of traditional stirring shafts that can only rotate, significantly expanding the stirring range.

[0018] The fixed bottom sleeve and the second damping spring at the bottom of the stirring shaft of this invention can buffer the impact force of reciprocating motion, avoid hard collision between the stirring shaft and the bottom of the tank, and improve the stability of the device operation.

[0019] This invention incorporates a movable push rod gear transmission mechanism inside the stirring shaft, allowing the tilt angle of the stirring rod to be adjusted with the reciprocating motion of the stirring shaft. When the stirring shaft moves up and down, the push block pushes the movable push rod to compress the third damping spring. The movable push rod drives the gear to rotate through the tooth groove, thereby changing the tilt angle of the stirring rod. This enables dynamic adjustment of the contact area between the stirring rod and the grain, achieving differentiated stirring at different heights of the stirring shaft, further improving the uniformity and efficiency of the stirring.

[0020] The present invention features a drive shaft that drives a crankshaft to rotate via chain drive. A connecting rod pulls a piston plate to reciprocate within the solution chamber. A flapper automatically controls the opening and closing of the through-holes based on gravity and solution pressure, achieving unidirectional pumping of the solution. This structure requires no additional power source, utilizing the kinetic energy of the stirring system to drive the spraying, thus offering the advantage of energy integration.

[0021] The flap and side rod sliding shaft mechanism designed in this invention ensure that the through hole is closed when the piston plate moves downward, preventing solution backflow and improving the stability and reliability of pumping.

[0022] When the stirring shaft of this invention drives the horizontal arm to rotate, the movable block moves along the movable groove under the action of centrifugal force. The tension spring provides the restoring force, so that the spray radius of the atomizing nozzle changes dynamically with the rotation speed. This overcomes the disadvantage of the limited spray range of the fixed nozzle and can cover the edge area of ​​the pretreatment tank, improving the uniformity of solution distribution.

[0023] In addition to the atomizing nozzle at the top, the present invention achieves top-down spraying through the first and second bottom holes of the annular disc and the bottom rod, forming vertical convection with the top nozzle. This solves the problem of insufficient bottom solution penetration that may exist in the comparative patent and constructs a three-dimensional mixing field.

[0024] This invention creates a three-dimensional stirring effect through the rotation and reciprocating motion of the stirring shaft and the change of the stirring rod angle. Compared with the single rotation stirring of the comparative patent, it can reduce the stirring blind zone and shorten the mixing time.

[0025] This invention, through the expansion of the radius of the top nozzle and the upward spraying of the bottom annular disc, enables the mycotoxin solution to penetrate into the gaps between grain particles from different directions, especially improving the wetting effect of the bottom material and enhancing the accuracy of subsequent detection.

[0026] In this invention, the stirring assembly and the solution spraying assembly share the motor's kinetic energy through a drive shaft and chain drive, reducing independent drive components and lowering energy consumption and device complexity. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the drive box of the present invention; Figure 4 This is a schematic diagram of the interior of the solution tank of the present invention; Figure 5 This is a schematic diagram of the connection structure between the motor shaft and the connecting bushing of the present invention; Figure 6 This is a schematic diagram of the connection structure between the first support rod and the second support rod of the present invention; Figure 7 This is a schematic diagram of the piston plate of the present invention in the open state. Figure 8 This is a schematic diagram of the internal structure of the cross arm of the present invention; Figure 9 For the present invention Figure 2 Schematic diagram of the structure at point B; Figure 10 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 11 This is a partial structural diagram of the stirring shaft of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Pretreatment tank; 2. Inlet; 3. Outlet; 4. Drive box; 5. Solution tank; 6. Stirring assembly; 601. Motor; 602. Guard plate; 603. Motor shaft; 604. Connecting bushing; 605. Fixing block; 606. First bevel gear; 607. Second bevel gear; 608. Drive shaft; 609. Eccentric wheel; 610. Movable plate; 611. Side block; 612. Protrusion; 613. First support rod; 614. Second support rod; 615. First damping spring; 616. Stirring shaft; 617. Stirring rod; 618. Feeding disc; 619. Fixing base sleeve; 620. Second damping spring; 621. Movable push rod; 622. Push block; 623. Limiting groove; 624. Gear groove; 625. Gear; 7. Solution spraying assembly; 701. Movable chamber; 702. Solution chamber; 703. Partition plate; 704. First sprocket; 705. Chain; 706. Second sprocket; 707. Crankshaft; 708. Connecting rod; 709. Fixed guide rod; 710. Piston plate; 711. Through hole; 712. Flip plate; 713. Side rod; 714. First slide groove; 715. First connecting pipe; 716. Sealing sleeve; 717. Groove; 718. Sealing ring; 719. Liquid guiding chamber; 720. Cross arm; 721. Movable groove; 722. Second connecting pipe; 723. Tension spring; 724. Movable block; 725. Atomizing nozzle; 726. Second slide groove; 727. Slider; 728. Third connecting pipe; 729. Hollow support rod; 730. Ring disc; 731. Bottom rod; 732. First bottom hole. Detailed Implementation

[0029] 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.

[0030] Example 1:

[0031] This invention provides a technical solution: like Figure 1 Figure 11 The device for detecting mycotoxins shown includes a pretreatment tank 1, an inlet 2 opened on one side of the outer wall of the pretreatment tank 1, and an outlet 3 opened at the bottom of the pretreatment tank 1. A drive box 4 and a solution tank 5 are fixed on the top of the pretreatment tank 1. The pretreatment tank 1 is equipped with a stirring assembly 6, and a solution spraying assembly 7 is provided on one side of the stirring assembly 6.

[0032] Example 2:

[0033] Based on Example 1, the stirring assembly 6 is further disclosed.

[0034] like Figure 2 , Figure 3 , Figure 6 , Figure 9 and Figure 11 As shown, the stirring assembly 6 includes: A stirring shaft 616 is installed inside the pretreatment tank 1. A connecting sleeve 604 is fixed to the top of the stirring shaft 616. A motor shaft 603 passes through the inside of the connecting sleeve 604. Insertion holes are opened on both sides of the inner wall of the connecting sleeve 604. A fixing block 605 is embedded in the insertion hole. The fixing block 605 is fixed to the outer wall of the motor shaft 603. A motor 601 is connected to the top of the motor shaft 603. The motor 601 is fixed to the inside of the drive box 4 by bolts. A fixed bottom sleeve 619 is fitted at the bottom of the stirring shaft 616. A second damping spring 620 is installed inside the fixed bottom sleeve 619. One end of the stirring shaft 616 inserted into the fixed bottom sleeve 619 is adapted to the inner wall of the fixed bottom sleeve 619. A first bevel gear 606 is sleeved on the outside of the motor shaft 603. A second bevel gear 607 meshes with both sides of the first bevel gear 606. A drive shaft 608 is fixed in the middle of the second bevel gear 607. A protective plate 602 and an eccentric wheel 609 are sleeved on both sides of the drive shaft 608. A bearing is sleeved at the connection between the protective plate 602 and the drive shaft 608. The top of the protective plate 602 is fixed to the inner wall of the drive box 4. The drive shaft 608 is fixedly connected to the eccentric wheel 609. A movable plate 610 is provided at the bottom inside the drive box 4. A bearing is sleeved between the connecting bushing 604 and the movable plate 610. The connecting bushing 604 is T-shaped. Side blocks 611 are fixed on both sides of the movable plate 610. A semi-circular protrusion 612 is integrally fixed on the top of the side block 611. The protrusion 612 contacts the eccentric wheel 609. A first support rod 613 and a second support rod 614 are provided on both sides of the bottom of the movable plate 610. A first damping spring 615 is connected between the first support rod 613 and the second support rod 614. The top of the first support rod 613 is fixed to the bottom of the movable plate 610, and the bottom of the second support rod 614 is fixed to the top of the pretreatment tank 1.

[0035] In this embodiment, the motor 601 is started, and the motor 601 drives the first bevel gear 606 to rotate via the motor shaft 603. The first bevel gear 606 pushes the second bevel gears 607 on both sides to rotate. The second bevel gears 607 drive the eccentric wheel 609 to rotate via the transmission shaft 608. The eccentric wheel 609 rotates in a circular motion and applies a thrust to the protrusion 612 on the top of the side block 611. The side block 611 applies a thrust to the movable plate 610, which pushes the first support rod 613 to move along the central axis of the second support rod 614. Because the movable plate 610 and the first support rod 613 are elastically supported by the first damping spring 615, the protrusion 612 and the eccentric wheel 609 are always in contact, and the movable plate 610 moves up and down reciprocally. Because the connecting bushing 604 is fixedly connected to the stirring shaft 616, the stirring... The stirring shaft 616 moves synchronously with the movable plate 610 and the connecting bushing 604. The bottom of the stirring shaft 616 compresses the second damping spring 620 inside the fixed bottom sleeve 619, which can change the vertical position of the stirring rods 617 on both sides of the stirring shaft 616. Since one end of the motor shaft 603 is inserted into the interior of the connecting bushing 604, the fixing block 605 fixed to the motor shaft 603 is embedded in the insertion hole of the connecting bushing 604. The motor 601 drives the connecting bushing 604 to rotate through the motor shaft 603. The stirring shaft 616 drives the stirring rods 617 on both sides and the material-pulling plates 618 on the stirring rods 617 to rotate synchronously. This is used to stir the grain inside the pretreatment tank 1, and increases the stirring range and height, so that the grain is stirred efficiently. The mycotoxin solution is sprayed into the interior of the pretreatment tank 1, so that the grain and the mycotoxin solution are fully mixed.

[0036] like Figure 9 , Figure 11 As shown, a movable push rod 621 is provided inside the stirring shaft 616. Three toothed grooves 624 are provided on both sides of the outer wall of the movable push rod 621. The toothed grooves 624 mesh with gears 625. The output shaft of the gears 625 is fixed with a stirring rod 617. Several material-pulling pieces 618 are fixed on both sides of the outer wall of the stirring rod 617. The bottom of the movable push rod 621 is fixed with a push block 622, and the top of the movable push rod 621 is connected with a third damping spring. Both ends of the push block 622 are fitted with limiting grooves 623. The limiting grooves 623 are opened on the inner wall of the stirring shaft 616. One end of the push block 622 passing through the limiting groove 623 is fixedly connected to the fixed bottom sleeve 619.

[0037] In this embodiment, as the stirring shaft 616 moves up and down reciprocally, the push block 622 at the bottom of the stirring shaft 616 applies a pushing force to the movable push rod 621, which in turn compresses the third damping spring at the top of the movable push rod 621, causing the movable push rod 621 to move back and forth. At the same time, the toothed groove 624 on the movable push rod 621 moves synchronously, and the toothed groove 624 drives the gear 625 to rotate. Since the gear 625 is fixedly connected to the stirring rod 617, the tilt angle of the stirring rod 617 can be changed, thereby changing the contact area between the stirring rod 617 and the grain. This increases the stirring range by changing the stirring position, and further increases the stirring range by driving the stirring rod 617 to rotate, allowing the grain and the stirring rod 617 to be fully mixed.

[0038] Example 2:

[0039] Based on Example 1, a solution spraying component 7 is further disclosed.

[0040] like Figure 4 , Figure 7 , Figure 8 and Figure 10 As shown, the solution spraying assembly 7 includes: An active cavity 701 is formed inside the solution tank 5, and two solution cavities 702 are provided, with a partition 703 between the two solution cavities 702; Inside the movable cavity 701, there is a crankshaft 707. A second sprocket 706 is fixed to one end of the crankshaft 707. A chain 705 is sleeved on the outside of the second sprocket 706. A first sprocket 704 is sleeved on the bottom of the chain 705. The first sprocket 704 is fixedly connected to a drive shaft 608. The drive shaft 608 is chain driven to the crankshaft 707 through the first sprocket 704, the chain 705, and the second sprocket 706. The crankshaft 707 is externally fitted with two bushings. A connecting rod 708 is fixed at the bottom of the bushing. A fixed guide rod 709 is connected to the bottom of the connecting rod 708 via a shaft. A piston plate 710 is fixed at the bottom of the fixed guide rod 709. The piston plate 710 is adapted to the solution chamber 702.

[0041] In this embodiment, the drive shaft 608 drives the first sprocket 704 to rotate. The drive shaft 608 drives the crankshaft 707 to rotate through the first sprocket 704, chain 705, and second sprocket 706. This causes the crankshaft 707 to drive the bushing at one end of the connecting rod 708 to make a circular motion. The other end of the connecting rod 708 will pull the fixed guide rod 709 to move back and forth. The fixed guide rod 709 simultaneously pulls the piston plate 710 to move back and forth inside the solution chamber 702.

[0042] like Figure 7As shown, the piston plate 710 has two through holes 711 inside. A flap 712 is installed inside the through hole 711. One side of the flap 712 is movably connected to the piston plate 710 via a shaft. Side rods 713 are provided on both sides of the through hole 711. A first sliding groove 714 is provided on both sides of the outer wall of the flap 712. One end of the side rod 713 is movably connected to the piston plate 710 via a shaft, and the other end is provided with a sliding shaft that is adapted to the first sliding groove 714.

[0043] In this embodiment, when the piston plate 710 moves upward, the flap 712 is subjected to gravity, and the flap 712 flips to open the through hole 711. The fungal toxin solution above the flap 712 can flow downward through the through hole 711. When the piston plate 710 moves downward, the flap 712 is subjected to the reaction thrust of the fungal toxin solution inside the solution chamber 702 to close the through hole 711 and apply the thrust to the fungal toxin solution.

[0044] like Figure 3 , Figure 8 As shown, a first connecting pipe 715 is connected to one side of a solution chamber 702, and a sealing sleeve 716 is connected to one end of the first connecting pipe 715. The sealing sleeve 716 is fitted onto the outside of the stirring shaft 616. A groove 717 is opened in the area of ​​the stirring shaft 616 corresponding to the sealing sleeve 716. A sealing ring 718 is fitted between the stirring shaft 616 and the sealing sleeve 716. The sealing ring 718 is fixedly connected to the stirring shaft 616. A horizontal arm 720 is installed at the top inside the pretreatment tank 1. A movable groove 721 is opened inside the horizontal arm 720. A movable block 724 is set inside the movable groove 721. The movable block 724 is hollow inside. An atomizing nozzle 725 is connected to the bottom of the movable block 724. A second connecting pipe 722 is connected to one end of the movable block 724. The movable block 724 is connected to the liquid guiding chamber 719 through the second connecting pipe 722. The liquid guiding chamber 719 is connected to the sealing sleeve 716 through the slot 717.

[0045] In this embodiment, the fungal toxin solution inside a solution chamber 702 is introduced into the interior of a sealing sleeve 716 through a first connecting pipe 715, and then enters the interior of a liquid guiding chamber 719 through a slot 717. The fungal toxin solution is then sent into the interior of a movable block 724 through a second connecting pipe 722, and the fungal toxin solution is sprayed out through an atomizing nozzle 725, which sprays the solution into the interior of the pretreatment tank 1.

[0046] like Figure 8 As shown, a tension spring 723 is sleeved on the outside of the second connecting pipe 722. One end of the tension spring 723 is fixedly connected to the cross arm 720, and the other end is fixedly connected to the movable block 724. A second sliding groove 726 is provided on both sides of the inner wall of the cross arm 720. A slider 727 is fixed on both sides of the outer wall of the movable block 724. The slider 727 is slidably connected to the second sliding groove 726 and is partially adapted to it.

[0047] In this embodiment, since the stirring shaft 616 is fixedly connected to the horizontal arm 720, the stirring shaft 616 will drive the horizontal arm 720 to rotate. Under the action of centrifugal force, the movable block 724 moves inside the movable groove 721 of the horizontal arm 720. The sliders 727 on both sides of the movable block 724 slide synchronously inside the second sliding groove 726. By changing the position of the movable block 724 and the atomizing nozzle 725, the range area of ​​the fungal toxin solution can be increased. At the same time, the tension spring 723 is stretched. When the centrifugal force is less than the elastic force of the tension spring 723, the movable block 724 and the atomizing nozzle 725 are pulled back to their initial positions.

[0048] like Figure 2 , Figure 9 , Figure 10 As shown, another solution chamber 702 is connected to a third connecting pipe 728, and the other solution chamber 702 is connected to the fixed bottom sleeve 619 through the third connecting pipe 728; Four hollow support rods 729 are fixed to the outer wall of the fixed bottom sleeve 619. An annular plate 730 is provided at the bottom inside the pretreatment tank 1. Four bottom rods 731 are connected to the inner wall of the annular plate 730. The hollow support rods 729, the annular plate 730 and the bottom rods 731 are hollow inside. The hollow support rods 729, the annular plate 730 and the bottom rods 731 are connected. Several first bottom holes 732 are provided in a ring shape on the inner wall of the annular plate 730. Several second bottom holes are provided on the outer wall of the bottom rods 731.

[0049] In this embodiment, the mycotoxin solution inside another solution chamber 702 is introduced into the liquid guiding chamber 719 through the third connecting pipe 728, and the mycotoxin solution is introduced into the ring disk 730 through the hollow support rod 729 and dispersed into the bottom rod 731. The mycotoxin solution is sprayed out through several first bottom holes 732 of the ring disk 730 and several second bottom holes of the bottom rod 731 to spray the mycotoxin solution into the grain at the bottom, thereby increasing the mixing effect between the grain and the mycotoxin solution.

[0050] 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 process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting mycotoxins, comprising a pretreatment tank (1), an inlet (2) formed on one side of the outer wall of the pretreatment tank (1), and an outlet (3) formed at the bottom of the pretreatment tank (1), characterized in that: The top of the pretreatment tank (1) is fixed with a drive box (4) and a solution tank (5); The pretreatment tank (1) is equipped with a stirring assembly (6) inside, and a solution spraying assembly (7) is provided on one side of the stirring assembly (6). The stirring assembly (6) includes: A stirring shaft (616) is installed inside the pretreatment tank (1). A connecting bushing (604) is fixed to the top of the stirring shaft (616). A motor shaft (603) passes through the inside of the connecting bushing (604). A motor (601) is connected to the top of the motor shaft (603). The motor (601) is fixed to the inside of the drive box (4) by bolts. The stirring shaft (616) is equipped with a movable push rod (621) inside. Three toothed grooves (624) are provided on both sides of the outer wall of the movable push rod (621). The toothed grooves (624) mesh with gears (625). The output shaft of the gears (625) is fixed with a stirring rod (617). Several material-pulling plates (618) are fixed on both sides of the outer wall of the stirring rod (617).

2. The device for detecting mycotoxins according to claim 1, characterized in that: The inner wall of the connecting bushing (604) is provided with insertion holes on both sides, and a fixing block (605) is embedded in the insertion hole. The fixing block (605) is fixed to the outer wall of the motor shaft (603). A first bevel gear (606) is sleeved on the outside of the motor shaft (603). A second bevel gear (607) meshes with both sides of the first bevel gear (606). A drive shaft (608) is fixed in the middle of the second bevel gear (607). A guard plate (602) and an eccentric wheel (609) are sleeved on both sides of the drive shaft (608). A bearing is sleeved at the connection between the guard plate (602) and the drive shaft (608). The top of the guard plate (602) is fixed to the inner wall of the drive box (4). The drive shaft (608) is fixedly connected to the eccentric wheel (609).

3. The device for detecting mycotoxins according to claim 2, characterized in that: The bottom of the drive box (4) is provided with a movable plate (610). A bearing is sleeved between the connecting bushing (604) and the movable plate (610). The connecting bushing (604) is T-shaped. Side blocks (611) are fixed on both sides of the movable plate (610). A semi-circular protrusion (612) is integrally fixed on the top of the side block (611). The protrusion (612) is in contact with the eccentric wheel (609). The movable plate (610) has a first support rod (613) and a second support rod (614) on both sides of its bottom. A first damping spring (615) is connected between the first support rod (613) and the second support rod (614). The top of the first support rod (613) is fixed to the bottom of the movable plate (610), and the bottom of the second support rod (614) is fixed to the top of the pretreatment tank (1).

4. The device for detecting mycotoxins according to claim 3, characterized in that: The bottom of the stirring shaft (616) is fitted with a fixed bottom sleeve (619), and a second damping spring (620) is provided inside the fixed bottom sleeve (619). One end of the stirring shaft (616) inserted into the fixed bottom sleeve (619) is adapted to the inner wall of the fixed bottom sleeve (619). The bottom of the movable push rod (621) is fixed with a push block (622), and the top of the movable push rod (621) is connected with a third damping spring. Both ends of the push block (622) are fitted with limiting grooves (623). The limiting grooves (623) are opened on the inner wall of the stirring shaft (616). One end of the push block (622) passing through the limiting groove (623) is fixedly connected to the fixed bottom sleeve (619).

5. The device for detecting mycotoxins according to claim 4, characterized in that: The solution spraying assembly (7) includes: An active cavity (701) is formed inside the solution tank (5), and two solution cavities (702) are provided, with a partition (703) between the two solution cavities (702). The movable cavity (701) is provided with a crankshaft (707). A second sprocket (706) is fixed to one end of the crankshaft (707). A chain (705) is sleeved on the outside of the second sprocket (706). A first sprocket (704) is sleeved on the bottom of the chain (705). The first sprocket (704) is fixedly connected to a drive shaft (608). The drive shaft (608) is chain driven to the crankshaft (707) through the first sprocket (704), the chain (705), the second sprocket (706). The crankshaft (707) is externally fitted with two bushings. A connecting rod (708) is fixed at the bottom of the bushing. A fixed guide rod (709) is connected to the bottom of the connecting rod (708) via a shaft. A piston plate (710) is fixed at the bottom of the fixed guide rod (709). The piston plate (710) is adapted to the solution chamber (702).

6. The device for detecting mycotoxins according to claim 5, characterized in that: The piston plate (710) has two through holes (711) inside. A flap (712) is provided inside the through hole (711). One side of the flap (712) is movably connected to the piston plate (710) via a shaft. Side rods (713) are provided on both sides of the through hole (711). A first sliding groove (714) is provided on both sides of the outer wall of the flap (712). One end of the side rod (713) is movably connected to the piston plate (710) via a shaft, and the other end is provided with a sliding shaft that is compatible with the first sliding groove (714).

7. The device for detecting mycotoxins according to claim 6, characterized in that, A first connecting pipe (715) is connected to one side of one of the solution chambers (702), and a sealing sleeve (716) is connected to one end of the first connecting pipe (715). The sealing sleeve (716) is fitted outside the stirring shaft (616). The stirring shaft (616) has a groove (717) in the area corresponding to the sealing sleeve (716). A sealing ring (718) is fitted between the stirring shaft (616) and the sealing sleeve (716). The sealing ring (718) is fixedly connected to the stirring shaft (616).

8. The device for detecting mycotoxins according to claim 7, characterized in that: The pretreatment tank (1) has a cross arm (720) installed at the top inside. The cross arm (720) has a movable groove (721) inside. The movable groove (721) has a movable block (724) inside. The movable block (724) is hollow inside. The bottom of the movable block (724) is connected to an atomizing nozzle (725). One end of the movable block (724) is connected to a second connecting pipe (722). The movable block (724) is connected to the liquid guiding chamber (719) through the second connecting pipe (722). The liquid guiding chamber (719) is connected to the sealing sleeve (716) through the slot (717).

9. The device for detecting mycotoxins according to claim 8, characterized in that: The second connecting pipe (722) is fitted with a tension spring (723). One end of the tension spring (723) is fixedly connected to the cross arm (720), and the other end is fixedly connected to the movable block (724). The inner wall of the cross arm (720) is provided with a second sliding groove (726) on both sides. The outer wall of the movable block (724) is fixed with a slider (727) on both sides. The slider (727) is slidably connected to the second sliding groove (726) and is partially adapted.

10. The device for detecting mycotoxins according to claim 9, characterized in that, Another solution chamber (702) is connected to a third connecting pipe (728), and the other solution chamber (702) is connected to the fixed bottom sleeve (619) through the third connecting pipe (728); The outer wall of the fixed bottom sleeve (619) is fixed with four hollow support rods (729). The bottom of the pretreatment tank (1) is provided with an annular plate (730). The inner wall of the annular plate (730) is connected with four bottom rods (731). The hollow support rods (729), the annular plate (730) and the bottom rods (731) are hollow inside. The hollow support rods (729), the annular plate (730) and the bottom rods (731) are connected. The inner wall of the annular plate (730) is provided with several annularly distributed first bottom holes (732). The outer wall of the bottom rods (731) is provided with several second bottom holes.

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