CN115931810B - Grain crop pesticide residue detection device - Google Patents
Grain crop pesticide residue detection device Download PDFInfo
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- CN115931810B CN115931810B CN202310127622.XA CN202310127622A CN115931810B CN 115931810 B CN115931810 B CN 115931810B CN 202310127622 A CN202310127622 A CN 202310127622A CN 115931810 B CN115931810 B CN 115931810B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a grain crop pesticide residue detection device, in particular to the pesticide detection field, which comprises an equipment body, wherein a vibration disc and a vibration motor are arranged in the equipment body, the output end of the vibration motor is connected with the vibration disc, a plurality of crops to be detected are randomly placed at the top of the vibration disc, a random material taking component is arranged in the equipment body and used for randomly grabbing one of the crops to be detected on the vibration disc, a sampling detection component corresponding to the random material taking component is also arranged in the equipment body, and the sampling detection component comprises a sampling tube. According to the invention, the potato sample is randomly obtained, then the random position is selected on the potato sample for sampling, and the randomly obtained sample block is then mixed with the detection solution by separating the sample, so that the randomness of detection of pesticide residues of a large number of grain crops is truly obtained, and the detection result of the detection device has randomness, representativeness and accuracy.
Description
Technical Field
The invention relates to the technical field of pesticide detection, in particular to a device for detecting pesticide residues of grain crops.
Background
Pesticide residue is a general term for trace amounts of agricultural chemical precursors, toxic metabolites, degradants and impurities which remain in organisms, harvests, soil, water bodies and the atmosphere without being decomposed in the later period of pesticide use.
Pesticides applied to food crops, wherein a part of the pesticides is attached to the crops, a part of the pesticides is scattered in soil, atmosphere, water and other environments, and a part of the residual pesticides in the environments is absorbed by plants. The pesticide residue in the grain crops finally reaches the human body to influence the health of people, so that the existing grain crops need to detect the pesticide residue concentration in the grain crops through the pesticide residue detection device, and whether the grain crops meet the standard is determined.
However, the existing detection device for pesticide residues in grain crops still has many defects in actual use, such as when detecting large-sized crops such as potatoes and sweet potatoes, a crop sample is usually randomly selected by a person, then the crop sample is randomly diced and sampled for detection, and in the piled potatoes, the potatoes piled below cannot be selected by a detector, that is, the randomness of the manual selection cannot achieve truly random selection detection, so that the representativeness of detection results is reduced.
Disclosure of Invention
The invention provides a device for detecting pesticide residues in grain crops, which aims to solve the problems that: the existing manual selection mode cannot guarantee the random representativeness of the detection result.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a grain crop pesticide residue detection device, which comprises an equipment body, the internally mounted of equipment body has vibration dish and vibrating motor, vibrating motor's output is connected with the vibration dish, a plurality of crop to be detected has been unordered placed at the top of vibration dish, the inside of equipment body is equipped with random material taking component, random material taking component is used for random snatching one of them crop to be detected on the vibration dish, the inside of equipment body still is equipped with the sample detection subassembly that corresponds with random material taking component, sample detection subassembly includes the sampling tube, the sampling tube is the tubular structure that one end opened one end was sealed, the sealed side of sampling tube is equipped with cylinder two, cylinder two drive sampling tube inserts the inside the crop to be detected that random material taking component snatched, extract strip crop sample piece to be detected, install the reagent pipe on the pipe wall of sampling tube, there is liquid porphyrin detection solution in the inside of reagent pipe, the junction of reagent pipe and sampling tube is equipped with the case, be used for controlling the quantitative inflow of liquid porphyrin detection solution in the reagent pipe into the sampling tube, install the detector on the inner wall of reagent pipe, the detector is used for detecting the fluorescence spectrum of the solution after waiting to detect crop sample piece and liquid porphyrin detection solution mix;
the detector is internally provided with a comparison program, and the comparison program is used for comparing the fluorescence spectrum interval of the solution after the crop sample block to be detected is mixed with the liquid porphyrin detection solution with the fluorescence spectrum interval of known quantitative pesticide concentration, so as to determine the pesticide residue concentration of the crop sample block to be detected;
determination of fluorescence spectrum interval for known quantitative pesticide concentration: in a detection pool of a fluorescence spectrophotometer, liquid porphyrin detection solution and different sample solutions with known quantitative pesticide concentrations are respectively mixed, corresponding fluorescence spectrums are measured and recorded, a gradient contrast table with known quantitative pesticide concentrations is obtained, and the gradient contrast table is stored, made into a comparison program and stored in a detector.
In a preferred embodiment, the sampling plate is slidably arranged in the sampling tube, a third cylinder is fixedly arranged on one side, far away from the opening side of the sampling tube, of the sampling plate, the third cylinder drives the sampling plate to slide along the length direction of the sampling tube, a sampling hole penetrates through the sampling plate, a sealing block is arranged in the sampling tube, close to the inner part of the sealing side, a detection area is formed between the sealing block and the sampling plate, and the valve core is arranged in the detection area.
In a preferred embodiment, the random material taking assembly comprises a mounting plate, a plurality of arc claws capable of automatically grabbing are mounted on the bottom side of the mounting plate, when the arc claws are folded, a wrapping area is formed on the inner side of each arc claw, the volume of the wrapping area is larger than that of crops to be detected, the sampling detection assembly is arranged in a gap between every two arc claws, and the opening side of the sampling tube faces the center or the approximate center of the wrapping area.
In a preferred embodiment, the random material taking assembly further comprises a first cylinder, the first cylinder is fixedly arranged at the top of the mounting plate, a push plate located below the mounting plate is fixedly arranged at the output end of the first cylinder, a second connecting rod is hinged to the outer side of the push plate, the end portion, away from the push plate, of the second connecting rod is hinged to the arc-shaped claw, a first connecting rod is hinged to the bottom of the mounting plate, and the end portion, away from the mounting plate, of the first connecting rod is also hinged to the arc-shaped claw.
In a preferred embodiment, the arc-shaped claw is of a hollow structure, the inner side of the arc-shaped claw is provided with air holes, the outer side of the arc-shaped claw is communicated with an external air source, the external air source pumps air into the arc-shaped claw, and air flows ejected from the air holes push crops to be detected to do disordered movement in the wrapping area.
In a preferred embodiment, the outside of the mounting plate is fixedly connected with a positioning piece, and the fixed ends of the second cylinder and the third cylinder are fixedly arranged on the positioning piece.
In a preferred embodiment, the top of mounting panel fixedly connected with connecting axle, the top fixedly connected with rotating electrical machines of connecting axle, the axle wall of connecting axle still is equipped with the subassembly that sways outward.
In a preferred embodiment, the swing assembly comprises a cylinder body, a top plate is arranged in the device body, the cylinder body is fixedly arranged on the top plate, a supporting rod is fixedly arranged on the outer side of the cylinder body, the supporting rod is arranged between the end part of the cylinder body and the shaft of the connecting shaft in a ball hinged mode, an eccentric wheel is rotatably arranged at the top of the top plate, a pull rod is hinged to one side of the eccentric wheel, the end part of the pull rod, which is far away from the cylinder body, is fixedly connected with a pull ring, a piston is arranged in the cylinder body in a sliding mode, the middle section of the pull rod is hinged to the piston, the pull ring is sleeved outside the connecting shaft, and the inner wall of the pull ring is always abutted to the wall of the connecting shaft.
In a preferred embodiment, a driving part is fixedly installed at the top of the inner cavity of the equipment body, the output end of the driving part is fixedly connected with the top plate, a first gear is sleeved on the shaft wall of the driving part, a second gear which is coaxially arranged is fixedly connected to one side of the eccentric wheel, and the second gear is in meshed connection with the first gear.
In a preferred embodiment, a display is mounted on one side of the equipment body, the display is in communication connection with the detector, the display is used for presenting the comparison data of the detector, and a box door is slidably mounted on the front side of the equipment body; the random access assembly is provided with a plurality of groups.
The invention has the technical effects and advantages that:
according to the invention, the potato sample is randomly obtained, then the random position is selected on the potato sample for sampling, and the randomly obtained sample block is then mixed with the detection solution by separating the sample, so that the randomness of detection of pesticide residues of a large number of grain crops is truly obtained, and the detection result of the detection device has randomness, representativeness and accuracy.
Drawings
FIG. 1 is a schematic view of the detecting device according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the detecting device of the present invention;
FIG. 3 is a schematic diagram of a plurality of random access modules and sampling detection modules according to the present invention;
FIG. 4 is a schematic perspective view of a single set of random access modules and sampling detection modules according to the present invention;
FIG. 5 is a schematic elevational view of a single set of random access modules and a sample detection module according to the present invention;
FIG. 6 is a schematic cross-sectional view of a top plate of the present invention;
FIG. 7 is a schematic diagram of a sample detection assembly according to the present invention;
FIG. 8 is a schematic cross-sectional view of a sample detection assembly according to the present invention.
The reference numerals are: 1. an equipment body; 11. a display; 12. a vibration plate; 13. a vibration motor; 14. a door; 2. a top plate; 21. a driving member; 22. a first gear; 3. a random material taking assembly; 31. a mounting plate; 311. a first connecting rod; 312. a positioning piece; 32. arc-shaped claws; 321. air holes; 33. a first cylinder; 331. a push plate; 332. a second connecting rod; 34. a connecting shaft; 341. a rotating electric machine; 4. a sampling detection assembly; 41. a sampling tube; 411. a limiting plate; 412. a second cylinder; 42. sampling a template; 421. a sampling hole; 422. a third cylinder; 43. a reagent tube; 431. a detector; 44. a valve; 45. a valve core; 46. a sealing block; 5. a swing assembly; 51. a cylinder; 511. a piston; 52. a support rod; 53. a pull rod; 531. a pull ring; 54. a second gear; 541. an eccentric wheel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-8 of the specification, a grain crop pesticide residue detection device comprises a device body 1, wherein a vibration disc 12 and a vibration motor 13 are installed in the device body 1, the output end of the vibration motor 13 is connected with the vibration disc 12, a plurality of crops to be detected are randomly placed on the top of the vibration disc 12, a random material taking component 3 is arranged in the device body 1 and used for randomly grabbing one of the crops to be detected on the vibration disc 12, a sampling detection component 4 corresponding to the random material taking component 3 is also arranged in the device body 1, the sampling detection component 4 comprises a sampling tube 41, the sampling tube 41 is of a tubular structure with one end open and one end closed, a cylinder two 412 is arranged on the closed side of the sampling tube 41, the cylinder two 412 drives the sampling tube 41 to be inserted into the crops to be detected grabbed by the random material taking component 3, strip-shaped crops to be detected sample blocks are extracted, a reagent tube 43 is installed on the wall of the sampling tube 41, liquid porphyrin detection solution is stored in the reagent tube 43, a communicating part between the reagent tube 43 and the sampling tube 41 is provided with a valve plug 45 for controlling the liquid porphyrin detection solution in the sampling tube 43 to quantitatively flow into the sampling tube 41, and the fluorescent solution detection detector 431 is installed on the inner wall of the sampling tube 43 for detecting the liquid porphyrin detection sample solution;
the detector 431 is internally provided with a comparison program, and the comparison program is used for comparing the fluorescence spectrum interval of the solution after the crop sample block to be detected is mixed with the liquid porphyrin detection solution with the fluorescence spectrum interval of the known quantitative pesticide concentration, so as to determine the pesticide residue concentration of the crop sample block to be detected;
the closed side of the sampling tube 41 is also perforated with an exhaust hole, the valve core 45 controls the opening and closing of the valve core 45 in an electrically controlled manner, and a valve 44 is installed on the outer side of the reagent tube 43 for controlling the opening and closing of the valve core 45.
Determination of fluorescence spectrum interval for known quantitative pesticide concentration: in a detection pool of a fluorescence spectrophotometer, respectively mixing liquid porphyrin detection solution with different sample solutions with known quantitative pesticide concentrations, measuring and recording corresponding fluorescence spectra to obtain a gradient contrast table with known quantitative pesticide concentrations, storing the gradient contrast table, preparing a comparison program, and storing the comparison program in a detector 431;
specifically, the principle of detecting the concentration of the pesticide residue in the sample block to be detected by the detector 431 is as follows: and detecting organophosphorus pesticide residues by utilizing the change of fluorescence intensity generated by the action of porphyrin compounds and organophosphorus pesticides. The porphyrin compound is a macrocyclic macromolecular compound with porphin as a matrix, and is an ultrahigh-sensitivity color-developing agent due to the characteristics of a larger planar macrocyclic structure and strong color-developing capability. The four meso- (5, 10, 15, 20) positions on the porphine ring and the eight β - (2, 3,7,8, 12, 13, 17, 18) positions can each be substituted with other groups to produce a series of porphine derivatives, i.e., porphyrins. The atoms of the porphyrin ring are basically in the same plane, so that a highly conjugated system with 11 conjugated double bonds, which is extremely easy to influence by the electron effect of the pyrrole ring and the methine, is formed. The structural feature enables porphyrin to show molecular recognition capability brought by a rigid plane and rich electron spectrum caused by a conjugated system; meanwhile, the highly conjugated system ensures that the chemical property is relatively stable and the color is darker. Thus, porphyrins have many characteristics such as rigidity and flexibility, electron buffering, photoelectromagnetism, photosensitivity, and high chemical stability, and broad spectral response. Metalloporphyrin, because of the formation of coordination bond, the symmetry and the axial coordination action of porphyrin ring are enhanced, the binding sites are increased, and the metalloporphyrin has more active property than non-metalloporphyrin. Porphyrin and metalloporphyrin have excellent photosensitivity, and are ideal sensitive materials for detecting trace organic phosphorus pesticide residues in grains and foods. The optical nature of porphyrin sensitivity to pesticide residues is due to the presence of p-p and n-p effects, and can be mainly reflected on the changes of absorption spectrum, fluorescence spectrum or reflection spectrum of porphyrin. After the porphyrin compound reacts with the organophosphorus pesticide molecules, the fluorescence intensity of the porphyrin compound is enhanced, and the fluorescence intensity enhancement is in linear relation with the concentration of the added organophosphorus pesticide, so that the content of the organophosphorus pesticide can be quantitatively detected.
The inside slip of sampling tube 41 is equipped with sampling plate 42, and sampling plate 42 is kept away from one side fixed mounting of sampling tube 41 opening side and is had cylinder three 422, and cylinder three 422 drive sampling plate 42 is followed sampling tube 41 pipe length direction and is slided, and runs through on the sampling plate 42 has sample hole 421, and sampling tube 41 is close to the internally mounted of closed side and has sealing block 46, is formed with the detection zone between sealing block 46 and the sampling plate 42, and case 45 locates in the detection zone.
It should be noted that, the closed side of the sampling tube 41 is provided with a limiting plate 411, the driving end of the second cylinder 412 is fixedly connected with the limiting plate 411, and the driving end of the third cylinder 422 penetrates through the limiting plate 411 and the closed side wall of the sampling tube 41 to be fixedly connected with the sampling plate 42;
a plurality of sampling detection modules 4 are arranged outside the random access module 3 in a corner position with respect to each other, as shown in fig. 4.
In this embodiment, the implementation scenario specifically includes: placing a plurality of potatoes on a vibration disc 12, starting a vibration motor 13, driving the vibration disc 12 to vibrate continuously by the vibration motor 13, jumping the potatoes on the vibration disc 12, and then controlling a random material taking assembly 3 to randomly grasp the jumping potatoes, so that the effect of randomly selecting crops by equipment is achieved;
after the random material taking assembly 3 picks up the potatoes, the cylinder II 412 drives the sampling tube 41 to be inserted into the potatoes picked up by the random material taking assembly 3, and the opening sides of the plurality of sampling tubes 41 are inserted into the potatoes from all directions, so that the potatoes can be fixed in the random material taking assembly 3, and a potato sample can enter the inside of the sampling tube 41;
the potato pulp enters the tube of the sampling tube 41 inserted into the random position of the potato, the potato pulp in the entering sampling tube 41 is randomly squeezed and separated by the sampling hole 421 on the sampling plate 42, the randomly separated pulp enters the detection area, the valve core 45 is controlled to be opened, the liquid porphyrin detection solution flows into the detection area of the sampling tube 41, the liquid porphyrin detection solution is mixed with the separated pulp to form a mixed solution, and the detector 431 compares the fluorescence spectrum interval obtained by detection with the fluorescence spectrum interval with known quantitative pesticide concentration, so that the pesticide residue concentration of the crop sample block to be detected is determined; according to the embodiment, the potato sample is randomly obtained, then the random position is selected on the potato sample for sampling, the randomly obtained sample block is then mixed with the detection solution through the separation sample, and the randomness of detection of pesticide residues of a large number of grain crops is truly obtained, so that the detection result of the detection device has randomness, representativeness and accuracy.
Example 2
Based on the above embodiment, this embodiment provides a specific implementation manner of the random material taking assembly 3, the random material taking assembly 3 includes a mounting plate 31, a plurality of arc claws 32 that can snatch automatically are installed to the bottom side of mounting plate 31, and when a plurality of arc claws 32 are closed, the inboard of arc claw 32 is formed with the parcel district, the volume of parcel district is greater than the volume of waiting to detect the crop, and the gap between the arc claws 32 is less than the volume of potato, sample detection assembly 4 locates in the space between arc claws 32 two by two, and the opening side of sampling tube 41 is towards the center department or approximate center department of parcel district, be favorable to fixed potato sample, prevent that potato volume is different, sampling tube 41 slippage when inserting the potato.
The random material taking assembly 3 further comprises a first cylinder 33, the first cylinder 33 is fixedly arranged at the top of the mounting plate 31, a push plate 331 positioned below the mounting plate 31 is fixedly arranged at the output end of the first cylinder 33, a second connecting rod 332 is hinged to the outer side of the push plate 331, the end part, far away from the push plate 331, of the second connecting rod 332 is hinged to the arc-shaped claw 32, a first connecting rod 311 is hinged to the bottom of the mounting plate 31, and the end part, far away from the mounting plate 31, of the first connecting rod 311 is also hinged to the arc-shaped claw 32.
The arc claw 32 is of a hollow structure, the inner side of the arc claw 32 is provided with an air hole 321, the outer side of the arc claw 32 is communicated with an external air source, the external air source pumps air into the arc claw 32, and air flow sprayed out of the air hole 321 pushes crops to be detected to do disordered movement in a wrapping area.
The outside fixedly connected with setting element 312 of mounting panel 31, the stiff end of cylinder two 412 and cylinder three 422 is all fixed mounting on setting element 312.
The top of mounting panel 31 fixedly connected with connecting axle 34, the top fixedly connected with rotating electrical machines 341 of connecting axle 34.
In this embodiment, the implementation scenario specifically includes: when the potatoes are grabbed, the first cylinder 33 is shortened to drive the push plate 331 to move upwards, under the action of the first connecting rod 311 and the second connecting rod 332, the four arc-shaped claws 32 are driven to fold, the potatoes on the vibration disk 12 are lifted along the disk surface, the potatoes can freely move in a wrapping area, after being grabbed, an external air source is started between or at the same time of sampling of the sampling pipe 41, air is pumped into the arc-shaped claws 32, and air flows sprayed out of the air holes 321 push the potatoes to do disordered movement in the wrapping area, so that the random degree of the position sampling of the potatoes inserted into the sampling pipe 41 is further improved;
at the same time of starting the air source, the rotating motor 341 is started, the connecting shaft 34 drives the arc-shaped claw 32 to rotate around the axial direction of the arc-shaped claw, the uncertainty of the position of the potato in the wrapping area is further increased, the randomness of the sampling position is further improved, and the unordered randomness of the detection result is ensured.
Example 3
Based on the above embodiment, this embodiment provides a concrete implementation of a swing assembly 5 structure, the outer shaft wall of the connecting shaft 34 is further provided with the swing assembly 5, the swing assembly 5 includes a cylinder body 51, the inside of the device body 1 is provided with a top plate 2, the cylinder body 51 is fixedly installed on the top plate 2, a supporting rod 52 is fixedly installed on the outer side of the cylinder body 51, the end part of the supporting rod 52 far away from the cylinder body 51 is arranged in a ball hinged manner with the shaft of the connecting shaft 34, an eccentric wheel 541 is rotatably installed on the top of the top plate 2, one side of the eccentric wheel 541 is hinged with a pull rod 53, the end part of the pull rod 53 far away from the cylinder body 51 is fixedly connected with a pull ring 531, a piston 511 is arranged in the inner sliding manner of the cylinder body 51, the middle section of the pull rod 53 is hinged on the piston 511, the pull ring 531 is sleeved outside the shaft of the connecting shaft 34, and the inner wall of the pull ring 531 always abuts against the shaft wall of the connecting shaft 34.
The top of the inner cavity of the equipment body 1 is fixedly provided with a driving piece 21, the output end of the driving piece 21 is fixedly connected with the top plate 2, the output shaft of the driving piece 21 is also sleeved with a first gear 22, one side of an eccentric wheel 541 is fixedly connected with a second gear 54 which is coaxially arranged, and the second gear 54 is in meshed connection with the first gear 22;
it should be noted that the driving member 21 is a driving device for driving the top plate 2 to rotate.
In this embodiment, the implementation scenario specifically includes: after the potatoes are grabbed, the driving piece 21 drives the top plate 2 to rotate and simultaneously drives the gear I22 to rotate, and as the gear II 54 is fixed on the top plate 2 through the fixed shaft, the gear II 54 is driven by the gear I22 to rotate around the fixed shaft to drive the eccentric wheel 541 to rotate, so that the pull rod 53 is pulled, the pull rod 53 pulls the connecting shaft 34 to swing out of order around the spherical hinge of the connecting shaft 34 and the support rod 52 through the pull ring 531 to do out of order, the uncertainty of the position of the potatoes in the wrapping area is increased, random and unordered sampling detection in the true sense of the mechanical selection mode is realized, and the representativeness and the accuracy of the detection result are ensured.
A display 11 is arranged on one side of the equipment body 1, the display 11 is in communication connection with the detector 431, the display 11 is used for presenting the comparison data of the detector 431, and a box door 14 is slidably arranged on the front side of the equipment body 1; the random access assembly 3 is provided with several groups.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a grain crop pesticide residue detection device, includes equipment body (1), its characterized in that: the inside of the equipment body (1) is provided with a vibration disc (12) and a vibration motor (13), the output end of the vibration motor (13) is connected with the vibration disc (12), a plurality of crops to be detected are randomly placed at the top of the vibration disc (12), a random material taking component (3) is arranged inside the equipment body (1), the random material taking component (3) is used for randomly taking one crop to be detected on the vibration disc (12), a sampling detection component (4) corresponding to the random material taking component (3) is further arranged inside the equipment body (1), the sampling detection component (4) comprises a sampling tube (41), the sampling tube (41) is of a tubular structure with one end open and one end closed, a cylinder II (412) is arranged on the closed side of the sampling tube (41), the cylinder II (412) drives the sampling tube (41) to be inserted into the crops to be detected which are grabbed by the random material taking component (3), a strip-shaped crop sample block to be detected is extracted, a tube (43) is arranged on the tube wall of the sampling tube (41), a liquid state of the sampling tube (43) is used for detecting porphyrin solution in the liquid state of the sampling tube (43) and the liquid state of the sampling tube (43) is used for quantitatively detecting porphyrin solution (41) and is communicated with the porphyrin solution (41), a detector (431) is arranged on the inner wall of the reagent tube (43), and the detector (431) is used for detecting the fluorescence spectrum of a solution obtained by mixing crop sample blocks to be detected with a liquid porphyrin detection solution;
the detector (431) is internally provided with a comparison program, and the comparison program is used for comparing the fluorescence spectrum interval of the solution after the crop sample block to be detected is mixed with the liquid porphyrin detection solution with the fluorescence spectrum interval of the known quantitative pesticide concentration, so as to determine the pesticide residue concentration of the crop sample block to be detected;
determination of fluorescence spectrum interval for known quantitative pesticide concentration: in a detection cell of a fluorescence spectrophotometer, liquid porphyrin detection solution and different sample solutions with known quantitative pesticide concentrations are respectively mixed, corresponding fluorescence spectra are measured and recorded, a gradient contrast table with known quantitative pesticide concentrations is obtained, and the gradient contrast table is stored, made into a comparison program and stored in a detector (431).
2. The grain crop pesticide residue detection apparatus as set forth in claim 1, wherein: the inside slip of sampling tube (41) is equipped with sampling plate (42), one side fixed mounting that sampling plate (42) kept away from sampling tube (41) open side has cylinder three (422), cylinder three (422) drive sampling plate (42) are followed sampling tube (41) tub length direction and are slided, just run through on sampling plate (42) have sample hole (421), the internally mounted that sampling tube (41) are close to the closed side has sealing block (46), be formed with the detection zone between sealing block (46) and sampling plate (42), in the detection zone was located in case (45).
3. The grain crop pesticide residue detection apparatus as set forth in claim 2, wherein: the random material taking assembly (3) comprises a mounting plate (31), a plurality of arc-shaped claws (32) capable of automatically grabbing are mounted on the bottom side of the mounting plate (31), and when the arc-shaped claws (32) are folded, a wrapping area is formed on the inner side of the arc-shaped claws (32), the volume of the wrapping area is larger than that of crops to be detected, the sampling detection assembly (4) is arranged in a gap between every two arc-shaped claws (32), and the opening side of the sampling tube (41) faces the center or the approximate center of the wrapping area.
4. A food crop pesticide residue detection apparatus as claimed in claim 3, wherein: the random material taking assembly (3) further comprises a first cylinder (33), the first cylinder (33) is fixedly arranged at the top of the mounting plate (31), a push plate (331) located below the mounting plate (31) is fixedly arranged at the output end of the first cylinder (33), a second connecting rod (332) is hinged to the outer side of the push plate (331), the second connecting rod (332) is hinged to the arc-shaped claw (32) away from the end portion of the push plate (331), a first connecting rod (311) is hinged to the bottom of the mounting plate (31), and the first connecting rod (311) is also hinged to the arc-shaped claw (32) away from the end portion of the mounting plate (31).
5. The grain crop pesticide residue detection apparatus as set forth in claim 4, wherein: the arc-shaped claw (32) is of a hollow structure, an air hole (321) is formed in the inner side of the arc-shaped claw (32), the outer side of the arc-shaped claw (32) is communicated with an external air source, the external air source pumps air into the arc-shaped claw (32), and air flow sprayed out of the air hole (321) pushes crops to be detected to make disordered movement in the wrapping area.
6. The grain crop pesticide residue detection apparatus as set forth in claim 5, wherein: the outside fixedly connected with setting element (312) of mounting panel (31), the stiff end of cylinder two (412) and cylinder three (422) is all fixed mounting on setting element (312).
7. The food crop pesticide residue detection apparatus as set forth in claim 6, wherein: the top fixedly connected with connecting axle (34) of mounting panel (31), the top fixedly connected with rotating electrical machines (341) of connecting axle (34), the axle wall of connecting axle (34) still is equipped with outward and sways subassembly (5).
8. The food crop pesticide residue detection apparatus as set forth in claim 7, wherein: the swing assembly (5) comprises a cylinder body (51), a top plate (2) is arranged in the equipment body (1), the cylinder body (51) is fixedly arranged on the top plate (2), a supporting rod (52) is fixedly arranged on the outer side of the cylinder body (51), the supporting rod (52) is arranged between the end part of the cylinder body (51) and the shaft of the connecting shaft (34) in a ball hinge mode, an eccentric wheel (541) is rotatably arranged at the top of the top plate (2), a pull rod (53) is hinged to one side of the eccentric wheel (541), a pull ring (531) is fixedly connected with the end part of the pull rod (53) away from the cylinder body (51), a piston (511) is arranged in a sliding mode in the cylinder body (51), the middle section of the pull rod (53) is hinged to the piston (511), the pull ring (531) is sleeved outside the shaft of the connecting shaft, and the inner wall of the pull ring (531) is always abutted to the shaft wall of the connecting shaft (34).
9. The food crop pesticide residue detection apparatus as set forth in claim 8, wherein: the device is characterized in that a driving piece (21) is fixedly arranged at the top of an inner cavity of the device body (1), the output end of the driving piece (21) is fixedly connected with the top plate (2), a first gear (22) is sleeved on the shaft wall of the driving piece (21), a second gear (54) which is coaxially arranged is fixedly connected to one side of the eccentric wheel (541), and the second gear (54) is meshed with the first gear (22).
10. The grain crop pesticide residue detection apparatus as set forth in claim 2 or 9, wherein: a display (11) is arranged on one side of the equipment body (1), the display (11) is in communication connection with a detector (431), the display (11) is used for presenting comparison data of the detector (431), and a box door (14) is slidably arranged on the front side of the equipment body (1); the random material taking assembly (3) is provided with a plurality of groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310127622.XA CN115931810B (en) | 2023-02-17 | 2023-02-17 | Grain crop pesticide residue detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310127622.XA CN115931810B (en) | 2023-02-17 | 2023-02-17 | Grain crop pesticide residue detection device |
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| CN114608871A (en) * | 2022-03-28 | 2022-06-10 | 陈信琼 | Green food detector and using method thereof |
| CN217211757U (en) * | 2022-01-18 | 2022-08-16 | 海口海关技术中心 | Shrimp sample detection pretreatment system |
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| JP2012053057A (en) * | 2011-10-27 | 2012-03-15 | Hitachi Plant Technologies Ltd | Method for using detection object collection implement |
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