Rapid pesticide residue detector for crop seeds

Abstract

The invention discloses a crop seed pesticide residue rapid detector, and relates to the field of pesticide residue detection.The crop seed pesticide residue rapid detector comprises an instrument main body and an opening and closing door rotationally installed on the outer side of the instrument main body, a solution frame is fixedly installed at the upper end of the instrument main body, and a reaction tank is fixedly installed in the instrument main body; a telescopic rod is fixedly mounted at the upper end of the detection frame, and a fluorescence detection head is fixedly mounted at the lower end of the telescopic rod. According to the crop seed pesticide residue rapid detector, the fluorescence detection head and a solution can be subjected to close-distance detection all the time, the detection result is guaranteed, meanwhile, the fluorescence detection head can be prevented from being polluted, the accuracy of the detector for detecting pesticide residues in seeds is effectively improved, pesticide in the seeds can be separated out conveniently, detection is convenient, and the detection efficiency is improved. Meanwhile, the dual-purpose blade can be used for stirring the solution, so that the precipitation of pesticide in the seeds is accelerated, the time required by the precipitation of the pesticide in the seeds is shortened, and the ingeniousness of the internal structure of the instrument can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pesticide residue detection, and specifically to a rapid detector for pesticide residues in crop seeds. Background Art

[0002] With the improvement of people's living standards, people's requirements for food, clothing, housing and transportation are gradually increasing, and they are paying more and more attention to food safety. Therefore, people will detect the content of pesticides in crop seeds. During the detection process, special detectors are required. However, there are still certain defects in the existing detectors during use. Existing detection equipment still has disadvantages such as low sensitivity and poor extraction efficiency. False positive and false negative phenomena occur from time to time, making it difficult to meet the needs of safe, rapid and high-throughput detection in the fields of agricultural product production, circulation and import and export in China at the present stage; The patent with the patent authorization announcement number CN216900223U discloses an integrated intelligent detection device for qualitative and quantitative determination of pesticide residues. The sample liquid storage mechanism is used to store the sample liquid to be detected, the reagent storage mechanism is used to store reagents, and the liquid adding module is used to add the sample liquid to be detected in the sample liquid storage mechanism and the reaction reagent in the reagent storage mechanism into the mixed detection mechanism for mixing and qualitative detection, thereby realizing the automatic liquid taking and mixing of the sample liquid and the reagent, improving the detection efficiency, and qualitatively detecting the sample liquid through the reaction of the sample liquid and the reagent, that is, determining whether the sample liquid contains pesticides. The quantitative detection module is used to quantitatively detect the mixed liquid showing pesticide residues after qualitative detection, and then detect the pesticide content in the mixed liquid; The patent with the patent authorization publication number CN115931793A discloses a bio-fluorescent pesticide residue detector. The detection liquid is contained in a colorimetric cell, and an excitation light source and a fluorescence receiver are respectively arranged on both sides of the colorimetric cell. The detection liquid in the colorimetric cell is irradiated by the excitation light source. The detection liquid emits fluorescence under the action of the excitation light source and is received by the fluorescence receiver. The calculation component processes and calculates the fluorescence signal obtained by the fluorescence receiver to obtain fluorescence data, and calculates the numerical value of the pesticide concentration from the fluorescence-pesticide relationship database, thereby realizing the detection of the pesticide residue content in fruits and vegetables, being able to achieve high-precision detection of the pesticide residue content, improving the sensitivity of pesticide detection, and realizing the screening of low-concentration pesticides; In the above-mentioned publicly disclosed patents, the instrument in the patent solves the problems raised above, but the instrument still has the following problems. During the use of the instrument, it is necessary to detect the liquid inside the crop through the detection structure to facilitate the judgment of the amount of pesticides inside the crop. However, during the detection process, it is difficult to control the distance between the detection structure and the solution, and it is easy to have the situation that the distance between the detection structure and the solution is too close or too far. If the solution is too close or too far from the detection structure, it is easy to affect the detection result, and at the same time, it is easy to cause pollution of the detection structure, resulting in inaccurate detection results.

[0003] In view of the above problems, it is urgent to innovate and design on the basis of the original detector structure. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid detector for pesticide residues in crop seeds, so as to solve the problems proposed in the above background technology that during the detection process, it is difficult to control the distance between the detection structure and the solution, and it is easy to have the situation that the distance between the detection structure and the solution is too close or too far. And when the solution is too close or too far from the detection structure, it is easy to affect the detection result, and at the same time, it is easy to cause pollution of the detection structure and lead to inaccurate detection results.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A rapid detector for pesticide residues in crop seeds, including an instrument main body and a switch door rotatably installed outside the instrument main body; A solution frame is fixedly installed at the upper end of the instrument main body, a reaction tank is fixedly installed inside the instrument main body, a liquid inlet pipe and an infusion pipe are fixedly installed outside the reaction tank, a separation plate is fixedly installed inside the instrument main body, and a detection frame and a processor are fixedly installed at the upper end of the separation plate. A telescopic rod is fixedly installed at the upper end of the detection frame, and a fluorescence detection head is fixedly installed at the lower end of the telescopic rod; A detection structure for controlling the position of the fluorescence detection head is arranged inside the detection frame, and a separation structure for controlling the separation of pesticides in crop seeds is arranged inside the reaction tank.

[0006] Preferably, the detection structure includes a floating ring and a support block. The support block is fixedly installed inside the detection frame, a floating ring is slidably installed inside the detection frame, and the floating ring is located above the support block.

[0007] Preferably, a connecting shaft is rotatably installed inside the infusion pipe. One end of the connecting shaft close to the detection frame is fixedly installed with a driven gear, and the driven gear is located inside the detection frame. A main rack is fixedly installed at the lower end of the detection frame, and the main rack is meshed with the driven gear.

[0008] Preferably, a cleaning brush is fixedly installed at one end of the connecting shaft close to the reaction tank, a filter block is fixedly installed at one end of the infusion pipe close to the reaction tank, and the filter block is located on the side of the cleaning brush close to the infusion pipe.

[0009] Preferably, a support plate is fixedly installed at the upper end of the floating ring, the upper end of the support plate is fixedly connected to the fluorescence detection head, and the lower end surface of the floating ring is higher than the lower end surface of the fluorescence detection head.

[0010] Preferably, a controller is fixedly installed outside the instrument main body, a waste liquid box is arranged inside the lower end of the instrument main body, and the waste liquid box is located below the separation plate.

[0011] Preferably, the separation structure includes a rotating cylinder, which is rotatably installed inside the reaction tank. A dual-purpose blade is rotatably installed inside the rotating cylinder, and the dual-purpose blades are vertically distributed up and down inside the reaction tank.

[0012] Preferably, a driven bevel gear is fixedly installed at one end of the dual-purpose blade close to the rotating cylinder. The driven bevel gear is located inside the rotating cylinder, and a small gear is fixedly installed inside the rotating cylinder.

[0013] Preferably, the separation structure further includes a driving motor, which is fixedly installed at the lower end of the separation plate. An output shaft is fixedly installed at the output end of the driving motor. The output shaft is located inside the rotating cylinder, and the rotating cylinder is rotatably connected to the output shaft; A large gear and a main bevel gear are fixedly installed on the outer side of the output shaft. The main bevel gear is meshed with the driven bevel gear, and the large gear is meshed with the small gear.

[0014] Preferably, a fixed cylinder is fixedly installed at the lower end of the rotating cylinder. A fixed shaft is fixedly installed inside the fixed cylinder. A ratchet tooth is rotatably installed on the outer side of the fixed shaft. A torsion spring is sleeved on the outer side of the fixed shaft, and the torsion spring is located inside the ratchet tooth. A ratchet wheel is fixedly installed on the outer side of the output shaft, and the ratchet wheel is meshed with the ratchet tooth.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By driving the fluorescence detection head to move upward through the floating ring, the fluorescence detection head can always be in close proximity to the solution for detection, ensuring the detection result while avoiding contamination of the fluorescence detection head, effectively improving the accuracy of the instrument for detecting pesticide residues inside seeds; 2. Through the crushing treatment of the seeds by the dual-purpose blade, it is convenient for the precipitation of pesticides inside the seeds for detection. At the same time, the dual-purpose blade can stir the solution, accelerating the precipitation of pesticides inside the seeds, shortening the time required for the precipitation of pesticides inside the seeds, and improving the ingenuity of the internal structure of the instrument; 3. Further, by rotating the cleaning brush, the filter block can be cleaned, ensuring the filtering effect of the filter block, and automatically completing the cleaning of the filter block, improving the convenience of using the instrument; 4. Further, by controlling the meshing state between the ratchet tooth and the ratchet wheel, the rotation state of the dual-purpose blade can be controlled to achieve the effects of crushing and stirring, improving the convenience of using the instrument; 5. Even further, by storing the liquid inside the reaction tank and the detection frame through the waste liquid frame, the instrument can perform multiple detections, improving the convenience of detection of the instrument. Description of the Drawings

[0016] Figure 1Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the waste liquid frame of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the floating ring of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the support block of the present invention; Figure 5 For the present invention Figure 4 Enlarged structure diagram at position A in; Figure 6 Schematic diagram of the three-dimensional structure of the solution frame of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the rotating cylinder of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the filter block of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the drive motor of the present invention; Figure 10 Schematic diagram of the three-dimensional structure of the dual-purpose blade of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the ratchet wheel of the present invention.

[0017] In the figure: 1. Instrument main body; 2. Switch door; 3. Solution frame; 4. Reaction tank; 5. Liquid inlet pipe; 6. Separation plate; 7. Waste liquid frame; 8. Detection frame; 9. Infusion pipe; 10. Telescopic rod; 11. Support plate; 12. Floating ring; 13. Support block; 14. Slave gear; 15. Main rack; 16. Connecting shaft; 17. Filter block; 18. Cleaning brush; 19. Processor; 20. Rotating cylinder; 21. Dual-purpose blade; 22. Slave bevel gear; 23. Drive motor; 24. Output shaft; 25. Large gear; 26. Small gear; 27. Main bevel gear; 28. Fixed cylinder; 29. Fluorescence detection head; 30. Fixed shaft; 31. Ratchet teeth; 32. Torsion spring; 33. Ratchet wheel; 34. Controller. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: As shown in this embodiment Figures 1 - 4 To solve the problem that the existing detection is prone to inaccuracy, the process by which the instrument can accurately detect is disclosed, achieving the effect that the instrument can accurately detect the pesticide residue content inside crop seeds. The specific content is as follows: The main body of the instrument 1 and the switch door 2 rotatably installed outside the main body of the instrument 1; a solution box 3 is fixedly installed at the upper end of the main body of the instrument 1, a reaction tank 4 is fixedly installed inside the main body of the instrument 1, and a liquid inlet pipe 5 and an infusion pipe 9 are fixedly installed outside the reaction tank 4. A separation plate 6 is fixedly installed inside the main body of the instrument 1, a detection frame 8 and a processor 19 are fixedly installed at the upper end of the separation plate 6, a telescopic rod 10 is fixedly installed at the upper end of the detection frame 8, and a fluorescence detection head 29 is fixedly installed at the lower end of the telescopic rod 10. The detection structure includes a floating ring 12 and a support block 13, the support block 13 is fixedly installed inside the detection frame 8, the floating ring 12 is slidably installed inside the detection frame 8, and the floating ring 12 is located above the support block 13. A connecting shaft 16 is rotatably installed inside the infusion pipe 9, a driven gear 14 is fixedly installed at one end of the connecting shaft 16 close to the detection frame 8, and the driven gear 14 is located inside the detection frame 8. A main rack 15 is fixedly installed at the lower end of the detection frame 8, and the main rack 15 is meshed with the driven gear 14. A cleaning brush 18 is fixedly installed at one end of the connecting shaft 16 close to the reaction tank 4, a filter block 17 is fixedly installed at one end of the infusion pipe 9 close to the reaction tank 4, and the filter block 17 is located on the side of the cleaning brush 18 close to the infusion pipe 9.

[0020] When using this rapid detector for pesticide residues in crop seeds, first place the instrument at the position where it needs to work. After placing the instrument, the crop seeds can be detected. During the detection process, the seeds need to be placed inside the reaction tank 4, and the precipitation solution inside the solution box 3 is added into the reaction tank 4 through the liquid inlet pipe 5. Then the pesticides inside the seeds can be precipitated. At this time, the liquid inside the reaction tank 4 will enter the detection frame 8 through the infusion pipe 9, and the fluorescence detection head 29 inside the detection frame 8 will perform detection to determine the amount of pesticide residues inside the seeds. During the process of the liquid entering the detection frame 8, in order to ensure the accuracy of the detection results, it is necessary to control the distance between the fluorescence detection head 29 and the detection liquid. At this time, as the liquid enters, the floating ring 12 will contact the solution and move upward under the action of buoyancy. During the upward movement of the floating ring 12, it will drive the fluorescence detection head 29 to move upward through the support plate 11, avoiding contact between the fluorescence detection head 29 and the liquid. During the upward movement of the fluorescence detection head 29, the telescopic rod 10 will contract, so as to ensure the close-range detection of the fluorescence detection head 29 and the liquid and ensure the accuracy of the detection results of this instrument.

[0021] Example Two: As shown in this example Figures 1 - 3 and Figures 8 - 11 In order to solve the problem that it is difficult for existing instruments to precipitate all the pesticides inside the seeds, the crushing and stirring process of the seeds by this instrument is disclosed, achieving the effect that this instrument can precipitate all the pesticides inside the seeds. The specific content is as follows: Inside the reaction tank 4, there is a structure for separating pesticides in crop seeds; the separating structure further includes a driving motor 23, and the driving motor 23 is fixedly installed at the lower end of the separating plate 6, and the output shaft 24 is fixedly installed at the output end of the driving motor 23. The output shaft 24 is located inside the rotating cylinder 20, and the rotating cylinder 20 is rotatably connected to the output shaft 24; one end of the dual-purpose blade 21 close to the rotating cylinder 20 is fixedly installed with a secondary bevel gear 22, and the secondary bevel gear 22 is located inside the rotating cylinder 20, and a small gear 26 is fixedly installed inside the rotating cylinder 20. A large gear 25 and a main bevel gear 27 are fixedly installed on the outer side of the output shaft 24, and the main bevel gear 27 is meshed with the secondary bevel gear 22, and the large gear 25 is meshed with the small gear 26. The lower end of the rotating cylinder 20 is fixedly installed with a fixed cylinder 28, and a fixed shaft 30 is fixedly installed inside the fixed cylinder 28. A ratchet tooth 31 is rotatably installed on the outer side of the fixed shaft 30, and a torsion spring 32 is sleeved on the outer side of the fixed shaft 30. At the same time, the torsion spring 32 is located inside the ratchet tooth 31. A ratchet wheel 33 is fixedly installed on the outer side of the output shaft 24, and the ratchet wheel 33 is meshed with the ratchet tooth 31.

[0022] When using this rapid detector for pesticide residues in crop seeds, the seeds need to be placed inside the reaction tank 4. Then, the controller 34 can be used to control the driving motor 23 to work and drive the output shaft 24 to rotate forward. When the output shaft 24 rotates forward, the ratchet tooth 31 and the ratchet wheel 33 are in a meshed state, which will cause the output shaft 24 to drive the rotating cylinder 20 to rotate through the fixed cylinder 28. The rotation of the rotating cylinder 20 will drive the dual-purpose blade 21 to rotate and crush the seeds, so that the liquid inside the seeds can overflow fully, facilitating the detection of the pesticide residue content inside the seeds. After the seeds are crushed, the liquid inside the solution frame 3 can be added into the reaction tank 4 through the liquid inlet pipe 5. And after the initial filling of this solution, the driving motor 23 drives the output shaft 24 to rotate in the reverse direction. At this time, the ratchet tooth 31 and the ratchet wheel 33 are in a separated state, and the torsion spring 32 is in a wound state. The reverse rotation of the output shaft 24 will drive the main bevel gear 27 and the large gear 25 to rotate. The large gear 25 will drive the rotating cylinder 20 to rotate through the small gear 26, and the main bevel gear 27 will drive the dual-purpose blade 21 to rotate through the secondary bevel gear 22. At this time, the dual-purpose blade 21 will rotate synchronously in the horizontal and vertical directions. During the rotation process, it will accelerate the precipitation of the pesticide residue content inside the seeds in the reaction tank 4, thus facilitating the detection. And after the stirring is completed, the solution inside the solution frame 3 needs to be filled into the reaction tank 4 again, so that the liquid inside the reaction tank 4 submerges the infusion pipe 9, facilitating the input of the liquid with pesticides into the detection frame 8 through the infusion pipe 9, completing the precipitation process of the pesticides inside the seeds, and further improving the convenience and accuracy of the use of this instrument.

[0023] Example 3: This example is asFigures 1 - 8 As shown, to solve the problem that existing instruments are difficult to clean, the process of automatically cleaning the filter block 17 of the instrument is disclosed, achieving the effect that the instrument can be quickly cleaned. The specific content is as follows: At the upper end of the floating ring 12, a support plate 11 is fixedly installed, and the upper end of the support plate 11 is fixedly connected to the fluorescence detection head 29. Moreover, the lower end surface of the floating ring 12 is higher than the lower end surface of the fluorescence detection head 29. A controller 34 is fixedly installed on the outer side of the instrument main body 1, and a waste liquid box 7 is arranged inside the lower end of the instrument main body 1, and the waste liquid box 7 is located below the separation plate 6. The separation structure includes a rotating cylinder 20, and the rotating cylinder 20 is rotatably installed inside the reaction tank 4. And a dual-purpose blade 21 is rotatably installed inside the rotating cylinder 20, and at the same time, the dual-purpose blades 21 are vertically distributed up and down inside the reaction tank 4.

[0024] During the use of the instrument, the liquid inside the reaction tank 4 will enter the inside of the detection frame 8 through the infusion tube 9. And the floating ring 12 inside the detection frame 8 will move upward. During the upward movement of the floating ring 12, the main rack 15 will be driven to move upward synchronously. During the upward movement of the main rack 15, the connecting shaft 16 will be driven to rotate by the driven gear 14 meshed with it. And when the connecting shaft 16 rotates, the cleaning brush 18 fixedly installed on its outer side will rotate. When the cleaning brush 18 rotates, the impurities adhered to the outside of the filter block 17 will be cleaned, ensuring the filtering effect of the filter block 17. At the same time, it prevents impurities from entering the inside of the detection frame 8 and affecting the detection result. During the detection by the fluorescence detection head 29, the processor 19 will receive and transmit this signal to the controller 34, and at the same time, the result will be displayed on the display screen inside the controller 34, so that the result can be intuitively observed. And after the detection is completed, the liquid inside the reaction tank 4 and the detection frame 8 will be discharged into the waste liquid box 7, facilitating the next use of the instrument and increasing the overall practicality.

[0025] The content not described in detail in this specification belongs to the known prior art of those skilled in the art.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection instrument for pesticide residues in crop seeds, comprising an instrument body (1) and a switch door (2) rotatably mounted outside the instrument body (1); Features: A solution frame (3) is fixedly mounted on the upper end of the instrument body (1), a reaction tank (4) is fixedly mounted inside the instrument body (1), and a liquid inlet pipe (5) and a liquid infusion pipe (9) are fixedly mounted on the outer side of the reaction tank (4), a separation plate (6) is fixedly mounted inside the instrument body (1), and a detection frame (8) and a processor (19) are fixedly mounted on the upper end of the separation plate (6), a telescopic rod (10) is fixedly mounted on the upper end of the detection frame (8), and a fluorescent detection head (29) is fixedly mounted on the lower end of the telescopic rod (10); A detection structure for controlling the position of a fluorescent detection head (29) is arranged inside the detection frame (8), and a structure for controlling the separation of pesticides from crop seeds is arranged inside the reaction tank (4).

2. A rapid detector for pesticide residues in crop seeds according to claim 1, characterized in that: The detection structure comprises a floating ring (12) and a support block (13), wherein the support block (13) is fixedly mounted inside the detection frame (8), and the floating ring (12) is slidably mounted inside the detection frame (8), and the floating ring (12) is located at the upper end of the support block (13).

3. The rapid detector for pesticide residues in crop seeds according to claim 1, characterized in that: A connecting shaft (16) is rotatably mounted inside the infusion tube (9), and a slave gear (14) is fixedly mounted on one end of the connecting shaft (16) close to the detection frame (8), and the slave gear (14) is located inside the detection frame (8). A main rack (15) is fixedly mounted on the lower end of the detection frame (8), and the main rack (15) is meshingly connected with the slave gear (14).

4. A rapid detector for pesticide residues in crop seeds according to claim 3, characterized in that: A cleaning brush (18) is fixedly mounted on one end of the connecting shaft (16) close to the reaction tank (4), and a filter block (17) is fixedly mounted on one end of the infusion tube (9) close to the reaction tank (4), and the filter block (17) is located on a side of the cleaning brush (18) close to the infusion tube (9).

5. The rapid detector for pesticide residues in crop seeds according to claim 2, characterized in that: The upper end of the floating ring (12) is fixedly mounted with a support plate (11), the upper end of the support plate (11) is fixedly connected to the fluorescent detection head (29), and the lower end surface of the floating ring (12) is higher than the lower end surface of the fluorescent detection head (29).

6. The rapid detector for pesticide residues in crop seeds according to claim 1, characterized in that: A controller (34) is fixedly mounted on the outside of the instrument body (1), and a waste liquid frame (7) is provided inside the lower end of the instrument body (1), and the waste liquid frame (7) is located at the lower end of the separation plate (6).

7. The rapid detector for pesticide residues in crop seeds according to claim 1, characterized in that: The separation structure comprises a rotating cylinder (20), wherein the rotating cylinder (20) is rotatably mounted inside the reaction tank (4), and a dual-purpose blade (21) is rotatably mounted inside the rotating cylinder (20), and the dual-purpose blade (21) is vertically distributed up and down inside the reaction tank (4).

8. The rapid detector for pesticide residues in crop seeds according to claim 7, characterized in that: A secondary bevel gear (22) is fixedly mounted on one end of the dual-purpose blade (21) close to the rotating cylinder (20), and the secondary bevel gear (22) is located inside the rotating cylinder (20), and a pinion gear (26) is fixedly mounted inside the rotating cylinder (20).

9. The rapid detector for pesticide residues in crop seeds according to claim 1, characterized in that: The separation structure further comprises a drive motor (23), and the drive motor (23) is fixedly mounted on the lower end of the separation plate (6), and an output shaft (24) is fixedly mounted on the output end of the drive motor (23), the output shaft (24) is located inside the rotating cylinder (20), and the rotating cylinder (20) is rotationally connected to the output shaft (24); A large gear (25) and a main bevel gear (27) are fixedly mounted on the outer side of the output shaft (24), the main bevel gear (27) is meshingly connected with the slave bevel gear (22), and the large gear (25) is meshingly connected with the small gear (26).

10. The rapid detector for pesticide residues in crop seeds according to claim 9, characterized in that: A fixed cylinder (28) is fixedly mounted on the lower end of the rotating cylinder (20), a fixed shaft (30) is fixedly mounted inside the fixed cylinder (28), a ratchet (31) is rotatably mounted on the outer side of the fixed shaft (30), a torsion spring (32) is sleeved on the outer side of the fixed shaft (30), and the torsion spring (32) is located inside the ratchet (31), a ratchet (33) is fixedly mounted on the outer side of the output shaft (24), and the ratchet (33) is meshedly connected with the ratchet (31).

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