CN117250030A - Food pesticide residue detection method and detection device thereof - Google Patents
Food pesticide residue detection method and detection device thereof Download PDFInfo
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- CN117250030A CN117250030A CN202311510428.6A CN202311510428A CN117250030A CN 117250030 A CN117250030 A CN 117250030A CN 202311510428 A CN202311510428 A CN 202311510428A CN 117250030 A CN117250030 A CN 117250030A
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- 235000013305 food Nutrition 0.000 title claims abstract description 66
- 239000000447 pesticide residue Substances 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 238000003860 storage Methods 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000005520 cutting process Methods 0.000 claims description 86
- 239000007788 liquid Substances 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 16
- 238000009825 accumulation Methods 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010183 spectrum analysis Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 5
- 239000011550 stock solution Substances 0.000 description 4
- 241000521257 Hydrops Species 0.000 description 3
- 206010030113 Oedema Diseases 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 231100000570 acute poisoning Toxicity 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000012055 fruits and vegetables Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a food pesticide residue detection method and a detection device thereof, relates to the technical field of pesticide residue detection, and is used for solving the problems of complicated sampling and low efficiency of the existing food pesticide residue detection method; the barrel shell is used for protecting the sample, and is arranged in a barrel shape, so that the sample storage assembly can be conveniently rotated by matching with the rotation mechanism; according to the food pesticide residue detection method, the food is sampled in the food pesticide residue detection device to realize continuous semi-automatic sampling, so that multiple samples can be simultaneously obtained, pollution among the samples is avoided, and meanwhile, the manpower requirement and the sampling time can be greatly reduced by the semi-automatic sampling device.
Description
Technical Field
The invention relates to the technical field of pesticide residue detection, in particular to a food pesticide residue detection method and a detection device thereof.
Background
Along with the continuous progress of science and technology and the continuous improvement of life quality, the requirements of people on food safety are also higher and higher. However, in the process of planting grains, fruits and vegetables, in order to avoid insect damage and improve crop yield, pesticides are generally applied, pesticide residues must be kept in a safe range, and under the condition of higher exceeding standard or in the human body, the pesticide residues can be chronically enriched, hidden danger is brought to physical health, acute poisoning can occur, serious life safety is even endangered, and the event is common in news reports.
At present, food pesticide residue detection is one of important means for ensuring food safety, however, the existing food pesticide residue detection method has the problems of complicated sampling and low efficiency. Only one sample can be taken at a time for detection, a great deal of time and manpower resources are consumed in the sampling process, and the problem of cross contamination easily occurs in the sampling process, so that the accuracy of a detection result is affected.
Disclosure of Invention
The invention provides a method and a device for detecting food pesticide residues, which solve the technical problems in the prior art.
The scheme for solving the technical problems is as follows: the method for detecting the pesticide residues in the food comprises the following steps:
s1: firstly, determining a food sampling position, placing the food sampling position on the top of an auxiliary plate in a sampling mechanism, aligning the center of a food sampling point with the center of a cutting hole formed in the auxiliary plate, controlling an electric telescopic rod mounted on an arched handle to extend, enabling an extending end of the electric telescopic rod to drive a cutting head to approach the food sampling point downwards, and carrying out annular cutting on the food sampling point through a cutting ring piece at the bottom of the cutting head and a corresponding cutting ring blade;
s2: after the annular cutting of the food sampling points is completed, the electric telescopic rod drives the sample embedded in the embedded groove at the bottom of the cutting head to continuously move downwards and move to the position above the sample storage component in the barrel shell, the continuous downwards movement enables the bottom of the cutting head to prop against a plurality of fan-shaped elastic pieces in a top plate positioned at the top of the sterile container, and the plurality of fan-shaped elastic pieces are automatically opened due to elasticity, so that the cutting head drives the sample to be positioned in the sterile container;
s3: the sample in the embedded groove is separated through the sample removing component, so that the sample enters the sterile container, the cleaning liquid in the liquid storage barrel is transmitted to the liquid accumulation cavity in the cutting head through the connecting pipe and the connecting hose by utilizing the micro booster pump, the cleaning liquid in the liquid accumulation cavity is sprayed out through the plurality of liquid spraying heads by utilizing the pressurization of the micro booster pump, and meanwhile, the sample in the embedded groove is sprayed out and enters the sterile container along with the cleaning liquid;
s4: after the sample storage of a single sterile container is completed, recovering the sampling mechanism, and driving a rotation chassis fixed at the upper end of a connecting shaft connected with the output end of the rotation chassis by utilizing a rotation motor in a rotation mechanism in a barrel shell, so that a plurality of sterile containers embedded in a plurality of embedded holes at the top of the rotation chassis rotate, and switching a new sterile container and enabling the new sterile container to be positioned under an auxiliary plate for sampling a next food sample;
s5: after the sampling of a plurality of food samples is finished, the whole device is placed on a bracket mechanism at the bottom, the whole device is transported to a laboratory, a plurality of clamping plates are clamped in clamping grooves formed in the surfaces of a plurality of barrel shells in the placing process, and the clamping plates are connected to a triangular base through a plurality of springs at the bottom of a bottom ring in the transporting process, so that a buffering effect can be achieved, and meanwhile, cleaning liquid in an aseptic container and the samples can be fully stirred and mixed in the shaking process, so that stains or pesticide residues on the surfaces of the samples can be cleaned;
s6: after the transportation is completed, the top cover is turned over in the flip structure, so that the top cover rotates on the hinge post through the swivel, the whole barrel shell is opened, a plurality of sterile containers are manually taken out through an experimenter, then a top plate at the top of the sterile containers is opened, a cleaned sample is taken out for spectral analysis, and pesticide residues in the food sample are judged.
On the basis of the technical scheme, the invention can be improved as follows.
Further, a food pesticide residue detection device includes:
the barrel shell is used for protecting the sample;
a plurality of groups of circumferentially distributed sample storage assemblies are arranged in the barrel shell, and a rotation mechanism is arranged between the plurality of groups of sample storage assemblies and the bottom of the barrel shell;
an arched handle is fixed on the surface of the barrel shell, a sampling mechanism is arranged on the arched handle, and a sample removing assembly is further arranged at the top of the arched handle;
the sampling mechanism comprises an electric telescopic rod, the electric telescopic rod is arranged at the top of the arched handle, the extending end of the electric telescopic rod penetrates through the arched handle and extends towards the bottom, a cutting head is fixed at the extending end of the electric telescopic rod, an embedded groove is formed in the bottom of the cutting head, a cutting ring piece is arranged at the edge of the bottom of the cutting head, an L-shaped supporting plate is fixed at the bottom of the arched handle, an auxiliary plate is fixed at the other end of the L-shaped supporting plate, a cutting hole is formed in the auxiliary plate, a cutting ring blade matched with the cutting head is fixed at the top of the auxiliary plate, and the cutting head and the cutting hole are matched with the position of a sample storage assembly arranged in a barrel shell;
the bottom of the barrel shell is connected with a support mechanism, and a flip structure is connected above the barrel shell.
Further, take off appearance subassembly includes the stock solution bucket, the top at the bow-shaped handle is installed to the stock solution bucket, the top threaded connection of stock solution bucket has the screw cap, miniature booster pump is installed in the left side of L shape backup pad, the bottom of stock solution bucket is connected with miniature booster pump water inlet through the connecting pipe, be provided with the hydrops chamber in the cutting head, the delivery port of miniature booster pump communicates with the hydrops chamber in the cutting head through coupling hose, set up a plurality of in the embedded groove with cut the hydrojet head of first inner hydrops chamber intercommunication, and a plurality of hydrojet head all is provided with the angle of outside slope.
Further, every group sample storage assembly includes aseptic container, aseptic container inlays and establishes on the rotation mechanism in the barrel casing, aseptic container's top has the roof through the rubber buffer joint, the perforation has been seted up on rubber buffer and the roof, be fixed with the fan-shaped shell fragment of a plurality of circumference distribution on the perforated circumference inner wall, and a plurality of fan-shaped shell fragment contact site all is provided with sealing rubber.
Further, the rotation mechanism comprises a rotation motor, the rotation motor is arranged at the bottom of the barrel shell, the output end of the rotation motor penetrates through the barrel shell and is fixedly provided with a connecting shaft, the upper end of the connecting shaft is fixedly provided with a rotation chassis, a plurality of embedded holes matched with the sterile container are formed in the rotation chassis, and extrusion rubber is arranged on the inner wall of each embedded hole.
Further, the supporting structure includes a plurality of draw-in grooves, and is a plurality of the draw-in grooves all offer in the circumference surface bottom of ladle shell, and a plurality of draw-in grooves are circumference equidistance and distribute, and is a plurality of equal joint has the cardboard in the draw-in groove, and is a plurality of the bottom of cardboard is fixed with the bottom ring, the bottom of bottom ring has the triangle base through a plurality of spring coupling, three mounting hole has been seted up to the bottom of triangle base.
Further, an energy storage battery is installed at the top of the triangular base and used for a standby power supply, and a lithium battery is installed on the circumferential surface of the barrel shell and used for supplying power to electrical elements in the device.
Further, flip structure includes the hinge post, the hinge post is installed at the top of barrel casing, the rotation is connected with the swivel in the hinge post, the swivel is connected with the top cap through the connecting piece, and the top cap is located the top of barrel casing, the fretwork hole has been seted up at the top of top cap, and fretwork hole and the position phase-match of tailorring the hole.
The beneficial effects of the invention are as follows: the invention provides a method and a device for detecting food pesticide residues, which have the following advantages:
according to the invention, aiming at the sampling defect of the food pesticide residue detection method, continuous semi-automatic sampling is realized by sampling food in the food pesticide residue detection device, multiple samples can be simultaneously obtained, pollution can not be caused among the samples, and meanwhile, the manual requirement and the sampling time can be greatly reduced by the semi-automatic sampling device;
after the sampling is completed, the stain or pesticide residue on the surface of the sample can be fully mixed, stirred and cleaned in the transportation process, and the sample can be directly detected after entering a laboratory, so that the time required for sample detection is greatly shortened, and the detection efficiency is improved.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a second view of the present invention of FIG. 2;
FIG. 4 is a partial view of the portion A of FIG. 3 in accordance with the present invention;
fig. 5 is a partial view of the invention at B in fig. 3.
In the drawings, the list of components represented by the various numbers is as follows:
1. a barrel shell; 2. a hinge post; 3. a swivel; 4. a top cover; 5. hollow holes; 6. a rotation motor; 7. rotating the chassis; 8. embedding holes; 9. an arcuate handle; 10. an electric telescopic rod; 11. cutting the head; 12. an embedded groove; 13. a liquid ejecting head; 14. a connecting hose; 15. a liquid storage barrel; 16. screwing the cover; 17. a connecting pipe; 18. a micro booster pump; 19. an L-shaped support plate; 20. an auxiliary plate; 21. cutting the hole; 22. a cutting ring blade; 23. a sterile container; 24. a top plate; 25. a rubber stopper; 26. perforating; 27. a fan-shaped elastic sheet; 28. a clamping groove; 29. a clamping plate; 30. a bottom ring; 31. a spring; 32. a triangular base; 33. a mounting hole; 34. an energy storage battery; 35. a lithium battery.
Detailed Description
The principles and features of the present invention are described below with reference to fig. 1-5, the examples being provided for illustration only and not for limitation of the scope of the invention. The invention is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the invention will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
As shown in fig. 1 to 5, the invention provides a food pesticide residue detection device, which comprises a barrel shell 1, an arched handle 9, a sampling mechanism, a sample removing component, a bracket mechanism and a flip cover structure;
the barrel shell 1 is used for protecting samples, and is arranged in a barrel shape, so that the rotation of the sample storage assembly can be conveniently carried out by matching with the rotation mechanism; a plurality of groups of circumferentially distributed sample storage assemblies are arranged in the barrel shell 1, and a rotation mechanism is arranged between the plurality of groups of sample storage assemblies and the bottom of the barrel shell 1;
each group of sample storage components comprises an aseptic container 23, the aseptic container 23 is embedded on a rotation mechanism in the barrel shell 1, the top of the aseptic container 23 is clamped with a top plate 24 through a rubber plug 25, a perforation 26 is formed on the rubber plug 25 and the top plate 24, a plurality of circumferentially distributed fan-shaped elastic pieces 27 are fixed on the circumferential inner wall of the perforation 26, and sealing rubber is arranged at the contact parts of the fan-shaped elastic pieces 27; the rotation mechanism comprises a rotation motor 6, the rotation motor 6 is arranged at the bottom of the barrel shell 1, the output end of the rotation motor 6 penetrates through the barrel shell 1 and is fixedly provided with a connecting shaft, the upper end of the connecting shaft is fixedly provided with a rotation chassis 7, a plurality of embedded holes 8 matched with the sterile container 23 are formed in the rotation chassis 7, and the inner wall of each embedded hole 8 is provided with extruded rubber;
after annular cutting of the food sampling points, the electric telescopic rod 10 drives the samples embedded in the embedded groove 12 at the bottom of the cutting head 11 to continuously move downwards and move to the position above the sample storage component in the barrel shell 1, the continuous downwards movement enables the bottom of the cutting head 11 to prop against a plurality of sector spring plates 27 in the top plate 24 at the top of the sterile container 23, and the plurality of sector spring plates 27 are automatically opened due to elasticity, so that the cutting head 11 drives the samples to be positioned in the sterile container 23; the plurality of sector spring plates 27 can automatically reset after the cutting head 11 is moved out, and the sealing rubber matched with the plurality of sector spring plates 27 can improve a relatively airtight environment in the transportation process of the sample in the sterile container 23, so that the sample is prevented from being polluted;
after the sample storage in the single sterile container 23 is completed, the rotation motor 6 in the rotation mechanism in the barrel shell 1 is utilized to drive the rotation chassis 7 with the upper end of the connecting shaft connected with the output end of the rotation motor, so that the plurality of sterile containers 23 embedded in the plurality of embedded holes 8 at the top of the rotation chassis 7 rotate, the new sterile container 23 is switched and positioned under the auxiliary plate 20 to sample the next food sample, the sampling of different food samples can be carried out more quickly and conveniently, and the semiautomatic setting is also comparatively labor-saving.
The surface of the barrel shell 1 is fixed with an arched handle 9, a sampling mechanism is arranged on the arched handle 9, and a sample removing component is arranged at the top of the arched handle 9;
the sampling mechanism comprises an electric telescopic rod 10, the electric telescopic rod 10 is arranged at the top of an arched handle 9, the extending end of the electric telescopic rod 10 penetrates through the arched handle 9 and extends towards the bottom, a cutting head 11 is fixed at the extending end of the electric telescopic rod 10, an embedded groove 12 is formed in the bottom of the cutting head 11, a cutting ring piece is arranged at the edge of the bottom of the cutting head 11, an L-shaped supporting plate 19 is fixed at the bottom of the arched handle 9, an auxiliary plate 20 is fixed at the other end of the L-shaped supporting plate 19, a cutting hole 21 is formed in the auxiliary plate 20, a cutting ring blade 22 matched with the cutting head 11 is fixed at the top of the auxiliary plate 20, and the cutting head 11 and the cutting hole 21 are matched with the position of a sample storage component arranged in the barrel shell 1; the sample removing assembly comprises a liquid storage barrel 15, the liquid storage barrel 15 is arranged at the top of the arched handle 9, a screw thread is connected with a screw cap 16 at the top of the liquid storage barrel 15, a micro booster pump 18 is arranged at the left side of an L-shaped supporting plate 19, the bottom of the liquid storage barrel 15 is connected with a water inlet of the micro booster pump 18 through a connecting pipe 17, a liquid accumulation cavity is arranged in the cutting head 11, a water outlet of the micro booster pump 18 is communicated with the liquid accumulation cavity in the cutting head 11 through a connecting hose 14, a plurality of liquid spraying heads 13 communicated with the liquid accumulation cavity in the cutting head 11 are arranged in the embedded groove 12, and a plurality of liquid spraying heads 13 are all provided with an angle inclined outwards;
in the process of sampling food, firstly determining the food sampling position, placing the food sampling position on the top of an auxiliary plate 20 in a sampling mechanism, aligning the center of the food sampling position with the center of a cutting hole 21 formed in the auxiliary plate 20, controlling an electric telescopic rod 10 mounted on an arched handle 9 to extend, enabling the extending end of the electric telescopic rod 10 to drive a cutting head 11 to approach downwards to the food sampling position, and carrying out annular cutting on the food sampling position through a cutting ring piece at the bottom of the cutting head 11 and a corresponding cutting ring blade 22;
the sample in the embedded groove 12 is separated through the sample removing component, so that the sample enters the sterile container 23, the cleaning liquid in the liquid storage barrel 15 is transmitted to the liquid accumulation cavity in the cutting head 11 through the connecting pipe 17 and the connecting hose 14 by the micro booster pump 18, the cleaning liquid in the liquid accumulation cavity is sprayed out through the plurality of liquid spraying heads 13 by the pressurization of the micro booster pump 18, and the sample in the embedded groove 12 is sprayed out and enters the sterile container 23 together with the cleaning liquid; the sample removing component not only can play a role of separating a sample, but also can clean a cutting ring piece at the bottom of the cutting head 11 by utilizing cleaning liquid sprayed by a plurality of liquid spraying heads 13, so that pollution to the next sampling is avoided, and meanwhile, quantitative cleaning liquid and the sample can be discharged into the sterile container 23 together, and the quantitative cleaning liquid and the sample are fully mixed and stirred in cooperation with later-period transportation, so that the surface of the sample is cleaned, and the influence of stains or pesticide residues on the surface of the sample on the detection result of the sample is avoided;
the bottom of the barrel shell 1 is connected with a bracket mechanism, and a flip structure is connected above the barrel shell 1; the bracket structure comprises a plurality of clamping grooves 28, wherein the clamping grooves 28 are formed in the bottom of the circumferential surface of the barrel shell 1, the clamping grooves 28 are distributed at equal intervals in circumference, clamping plates 29 are clamped in the clamping grooves 28, a bottom ring 30 is fixed at the bottom of the clamping plates 29, the bottom of the bottom ring 30 is connected with a triangular base 32 through a plurality of springs 31, and three mounting holes 33 are formed in the bottom of the triangular base 32; the top of the triangle base 32 is provided with an energy storage battery 34 for standby power, and the circumference surface of the barrel shell 1 is provided with a lithium battery 35 for supplying power to electrical elements in the device; the flip structure comprises a hinge shaft post 2, the hinge shaft post 2 is arranged at the top of the barrel shell 1, a swivel 3 is rotationally connected to the hinge shaft post 2, the swivel 3 is connected with a top cover 4 through a connecting piece, the top cover 4 is positioned at the top of the barrel shell 1, a hollowed-out hole 5 is formed in the top of the top cover 4, and the hollowed-out hole 5 is matched with a cutting hole 21 in position;
the setting of the bracket structure can place the whole device on the bracket mechanism at the bottom after completing the sampling of a plurality of food samples, transport the whole device to a laboratory, the clamping plates 29 are clamped in the clamping grooves 28 formed on the surfaces of the barrel shells 1 in the placing process, the bottom of the bottom ring 30 is connected to the triangular base 32 through the springs 31 in the transporting process, the buffering effect can be achieved, meanwhile, cleaning liquid in the sterile container 23 and the samples can be fully stirred and mixed in the oscillating process, stains or pesticide residues on the surfaces of the samples are cleaned, the bracket mechanism is fixed firmly through the mounting holes 33 at the bottom of the triangular base 32 in the bracket mechanism, the energy storage batteries 34 mounted at the top of the triangular base 32 can supplement electric quantity of the lithium batteries 35 mounted on the arched handles 9 in the transporting process, and the setting of the handheld arched handles 9 is matched, so that the sampling convenience of the device is greatly improved; the flip structure can be after accomplishing the transportation, through flip structure in upset top cap 4, make top cap 4 rotate on hinge post 2 through swivel 3, open whole ladle shell 1 and take out in a plurality of aseptic container 23 through the experimenter is manual, open the roof 24 at aseptic container 23 top again and take out the sample after wasing and carry out spectral analysis, judge the pesticide residue in the food sample.
The specific working principle and the using method of the invention are as follows: when the device is actually used, firstly, the position for sampling food is determined, the arc-shaped handle 9 is held by hand, the whole device is supported, the food sampling position is placed on the top of the auxiliary plate 20 in the sampling mechanism, the center of the food sampling point is aligned to the center position of the cutting hole 21 formed in the auxiliary plate 20, then the electric telescopic rod 10 arranged on the arc-shaped handle 9 is controlled to extend, the extending end of the electric telescopic rod 10 drives the cutting head 11 to downwards approach the food sampling point, the cutting ring piece at the bottom of the cutting head 11 and the corresponding cutting ring blade 22 are used for annular cutting of the food sampling point, after the annular cutting of the food sampling point is completed, the electric telescopic rod 10 drives a sample embedded in the bottom embedded groove 12 of the cutting head 11 to continuously move downwards, and moves to the position above the sample storage component in the barrel shell 1, the bottom of the cutting head 11 is enabled to abut against a plurality of fan-shaped elastic pieces 27 in the top plate 24 positioned at the top of the sterile container 23, the plurality of fan-shaped elastic pieces 27 are automatically opened due to elasticity, the cutting head 11 is enabled to drive the sample to be positioned in the sterile container 23, the sample is enabled to be separated from the sample storage component through the sample release component to be located in the inner groove 12, the sample release component is enabled to be separated from the sample storage component, the sample is enabled to enter the sterile container 18, and is enabled to be enabled to enter the sterile container 18 through the sterile container, and the pressurizing pump is enabled to be ejected into the clean fluid storage 18 through the clean fluid storage 18, and the inner container 13, and the sterile container is enabled to be ejected into the clean fluid storage cavity 13 through the clean fluid storage 18, and the clean fluid storage 18; after the sample storage of a single sterile container 23 is completed, the sampling mechanism is restored, the rotation motor 6 in the rotation mechanism in the barrel shell 1 is utilized to drive the rotation chassis 7 with the upper end of the connecting shaft connected with the output end of the rotation chassis 7, so that a plurality of sterile containers 23 embedded in a plurality of embedded holes 8 at the top of the rotation chassis 7 rotate, a new sterile container 23 is switched and positioned under the auxiliary plate 20 to sample the next food sample, after the sampling of a plurality of food samples is completed, the whole device is placed on a bracket mechanism at the bottom, the laboratory is transported, a plurality of clamping plates 29 are clamped in clamping grooves 28 formed in the surfaces of a plurality of barrel shells 1 in the placing process, and the bottom of a bottom ring 30 is connected to a triangular base 32 through a plurality of springs 31 in the transporting process, so that the buffer effect can be achieved, and meanwhile, cleaning liquid in the sterile containers 23 and the sample can be fully stirred and mixed in the shaking process, and stains or pesticide residues on the surface of the sample can be cleaned; after the transportation is completed, the top cover 4 is turned over in the flip structure, so that the top cover 4 rotates on the hinge post 2 through the swivel 3, the whole barrel shell 1 is opened, a plurality of sterile containers 23 are manually taken out by an experimenter, then the top plate 24 at the top of the sterile containers 23 is opened, a cleaned sample is taken out for spectral analysis, and pesticide residues in the food sample are judged.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way; those skilled in the art will readily appreciate that the present invention may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (8)
1. The method for detecting the pesticide residues in the food is characterized by comprising the following steps of:
s1: firstly, determining the food sampling position, placing the food sampling position on the top of an auxiliary plate (20) in a sampling mechanism, aligning the center of a food sampling point with the center position of a cutting hole (21) formed in the auxiliary plate (20), controlling an electric telescopic rod (10) arranged on an arched handle (9) to extend, enabling the extending end of the electric telescopic rod (10) to drive a cutting head (11) to downwards approach the food sampling point, and carrying out annular cutting on the food sampling point through a cutting ring piece at the bottom of the cutting head (11) and a corresponding cutting ring blade (22);
s2: after the annular cutting of the food sampling points is completed, the electric telescopic rod (10) drives the samples embedded in the embedded groove (12) at the bottom of the cutting head (11) to continuously move downwards and move to the position above the sample storage component in the barrel shell (1), the continuous downwards movement enables the bottom of the cutting head (11) to prop against a plurality of sector-shaped elastic pieces (27) positioned in a top plate (24) at the top of the sterile container (23), and the plurality of sector-shaped elastic pieces (27) are automatically opened due to elasticity, so that the cutting head (11) drives the samples to be positioned in the sterile container (23);
s3: then the sample in the embedded groove (12) is separated through the sample removing component, so that the sample enters the sterile container (23), the cleaning liquid in the liquid storage barrel (15) is transmitted to the liquid accumulation cavity in the cutting head (11) through the connecting pipe (17) and the connecting hose (14) by utilizing the micro booster pump (18), the cleaning liquid in the liquid accumulation cavity is sprayed out through the plurality of liquid spraying heads (13) by utilizing the pressurization of the micro booster pump (18), and meanwhile, the sample in the embedded groove (12) is sprayed out and enters the sterile container (23) together with the cleaning liquid;
s4: after the sample storage of a single sterile container (23) is completed, the sampling mechanism is restored, a rotation motor (6) in the rotation mechanism in the barrel shell (1) is utilized to drive a rotation chassis (7) with the upper end of a connecting shaft connected with the output end of the rotation chassis, so that a plurality of sterile containers (23) embedded in a plurality of embedded holes (8) at the top of the rotation chassis (7) rotate, a new sterile container (23) is switched and positioned under an auxiliary plate (20) to sample the next food sample;
s5: after the sampling of a plurality of food samples is finished, the whole device is placed on a bracket mechanism at the bottom, the whole device is transported to a laboratory, a plurality of clamping plates (29) are clamped in clamping grooves (28) formed in the surfaces of a plurality of barrel shells (1) in the placing process, the bottom of a bottom ring (30) is connected to a triangular base (32) through a plurality of springs (31) in the transporting process, the buffering effect can be achieved, and meanwhile cleaning liquid in a sterile container (23) and the samples can be fully stirred and mixed in the shaking process, so that stains or pesticide residues on the surfaces of the samples can be cleaned;
s6: after transportation is completed, the top cover (4) is turned over in the flip structure, the top cover (4) rotates on the hinge shaft column (2) through the swivel (3), the whole barrel shell (1) is opened, a plurality of sterile containers (23) are manually taken out by an experimenter, a top plate (24) at the top of the sterile containers (23) is opened again, a cleaned sample is taken out, spectral analysis is performed, and pesticide residues in the food sample are judged.
2. A food pesticide residue detection device, characterized by comprising:
a barrel shell (1), wherein the barrel shell (1) is used for protecting a sample;
a plurality of groups of circumferentially distributed sample storage assemblies are arranged in the barrel shell (1), and a rotation mechanism is arranged between the plurality of groups of sample storage assemblies and the bottom of the barrel shell (1);
an arched handle (9) is fixed on the surface of the barrel shell (1), a sampling mechanism is arranged on the arched handle (9), and a sample removing component is further arranged at the top of the arched handle (9);
the sampling mechanism comprises an electric telescopic rod (10), the electric telescopic rod (10) is arranged at the top of an arched handle (9), the extending end of the electric telescopic rod (10) penetrates through the arched handle (9) and extends towards the bottom, a cutting head (11) is fixed at the extending end of the electric telescopic rod (10), an embedded groove (12) is formed in the bottom of the cutting head (11), a cutting ring piece is arranged at the edge of the bottom of the cutting head (11), an L-shaped supporting plate (19) is fixed at the bottom of the arched handle (9), an auxiliary plate (20) is fixed at the other end of the L-shaped supporting plate (19), a cutting hole (21) is formed in the auxiliary plate (20), a cutting ring blade (22) matched with the cutting head (11) is fixed at the top of the auxiliary plate (20), and the cutting head (11) and the cutting hole (21) are matched with the position of a sample storage assembly arranged in a barrel shell (1).
The bottom of the barrel shell (1) is connected with a support mechanism, and a flip structure is connected above the barrel shell (1).
3. The food pesticide residue detection device according to claim 2, wherein the sample removing component comprises a liquid storage barrel (15), the liquid storage barrel (15) is arranged at the top of the arched handle (9), a screw thread on the top of the liquid storage barrel (15) is connected with a screwing cap (16), a micro booster pump (18) is arranged on the left side of the L-shaped supporting plate (19), the bottom of the liquid storage barrel (15) is connected with a water inlet of the micro booster pump (18) through a connecting pipe (17), a liquid accumulation cavity is arranged in the cutting head (11), a water outlet of the micro booster pump (18) is communicated with the liquid accumulation cavity in the cutting head (11) through a connecting hose (14), a plurality of liquid spraying heads (13) communicated with the liquid accumulation cavity in the cutting head (11) are arranged in the embedded groove (12), and a plurality of liquid spraying heads (13) are all provided with angles which incline outwards.
4. The food pesticide residue detection device according to claim 3, wherein each group of sample storage components comprises a sterile container (23), the sterile container (23) is embedded on a rotation mechanism in the barrel shell (1), a top plate (24) is clamped on the top of the sterile container (23) through a rubber plug (25), a perforation (26) is formed in the rubber plug (25) and the top plate (24), a plurality of circumferentially distributed fan-shaped elastic pieces (27) are fixed on the circumferential inner wall of the perforation (26), and sealing rubber is arranged at the contact positions of the fan-shaped elastic pieces (27).
5. The food pesticide residue detection device according to claim 4, wherein the rotation mechanism comprises a rotation motor (6), the rotation motor (6) is mounted at the bottom of the barrel shell (1), an output end of the rotation motor (6) penetrates through the barrel shell (1) and is fixedly provided with a connecting shaft, the upper end of the connecting shaft is fixedly provided with a rotation chassis (7), a plurality of embedded holes (8) matched with the sterile container (23) are formed in the rotation chassis (7), and extrusion rubber is arranged on the inner wall of each embedded hole (8).
6. The food pesticide residue detection device according to claim 2, wherein the support structure comprises a plurality of clamping grooves (28), the clamping grooves (28) are all formed in the bottom of the circumferential surface of the barrel shell (1), the clamping grooves (28) are distributed at equal intervals circumferentially, clamping plates (29) are clamped in the clamping grooves (28), a bottom ring (30) is fixed at the bottom of the clamping plates (29), a triangular base (32) is connected to the bottom of the bottom ring (30) through a plurality of springs (31), and three mounting holes (33) are formed in the bottom of the triangular base (32).
7. The food pesticide residue detection device according to claim 6, wherein an energy storage battery (34) is mounted on top of the triangular base (32) for standby power, and a lithium battery (35) is mounted on the circumferential surface of the barrel casing (1) for powering electrical components in the device.
8. The food pesticide residue detection device according to claim 2, wherein the flip structure comprises a hinge post (2), the hinge post (2) is mounted at the top of the barrel casing (1), a swivel (3) is rotationally connected with the hinge post (2), the swivel (3) is connected with a top cover (4) through a connecting piece, the top cover (4) is located at the top of the barrel casing (1), a hollow cavity (5) is formed in the top of the top cover (4), and the hollow cavity (5) is matched with the position of the cutting hole (21).
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