Full-automatic detector for food pesticide residue detection

Abstract

The invention discloses a full-automatic detector for food pesticide residue detection, and relates to the technical field of pesticide detection.The full-automatic detector comprises a base, a power mechanism, a stirring mechanism and a detector, the power mechanism is fixedly connected with the base and is in transmission connection with the stirring mechanism, and the stirring mechanism is fixedly connected with the base and is in transmission connection with the detector; the stirring mechanism is communicated with the detector, the stirring mechanism is used for conveying the sample liquid to the detector, and the detector is used for detecting pesticide residues in food; when detection is carried out, firstly, a crushed sample is added into the stirring mechanism, then, an extracting solution is added for stirring so as to promote analysis of pesticide components in the sample, and finally, liquid needing to be detected is guided into the detector for detection.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide detection, in particular to a fully automatic detector for detecting pesticide residues in food. Background Art

[0002] The purpose of food pesticide testing is to achieve rapid, accurate and efficient detection of pesticide residues in food. It is generally used in food safety monitoring, quality control and agricultural production supervision. The operating procedure is generally to quantitatively weigh the crushed sample, then add sample extract to extract the pesticides in the sample, and send the extracted liquid into the detector for testing.

[0003] However, existing detectors often require manual processing of samples during testing, which has low work efficiency. In addition, after the samples are extracted with the extracting solution, some samples will remain in the sampling slot, which will cause interference during the next test. Summary of the invention

[0004] The purpose of the present invention is to provide a fully automatic detector for detecting pesticide residues in food to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the fully automatic detector includes a base, a power mechanism, a stirring mechanism and a detector, the power mechanism is tightly connected to the base, the power mechanism is transmission-connected to the stirring mechanism, the stirring mechanism is tightly connected to the base, the stirring mechanism is communicated with the detector, the stirring mechanism is used to transport the sample liquid to the detector, and the detector is used to detect pesticide residues in food.

[0006] The base is used to provide stable support for the power mechanism and the stirring mechanism. The power mechanism is used to drive the stirring mechanism. When testing, the crushed sample is first added to the stirring mechanism, and then the extract is added for stirring to promote the analysis of the pesticide components in the sample. Finally, the liquid to be tested is introduced into the detector for testing. The detector can use immunoassay for testing. The detection method is roughly as follows: the extracted liquid is added to the test card of the immunochromatographic test paper, and the substance to be tested in the sample begins to react with the label antibody in the test paper. There are specific capture antibodies or antigens on the test paper, and these antibodies or antigens will specifically bind to the target substance in the sample. If the sample contains the target substance, the target substance will react with the capture antibody on the test paper and form a visible signal on the test paper. The pesticide residue can be determined by the corresponding visual detection method.

[0007] Furthermore, a power cabin is provided on the base, and the power mechanism includes a driving motor, a driving gear and a transmission gear. The driving motor is tightly connected to the base, the output end of the driving motor is transmission-connected to the driving gear, the driving gear is rotationally connected to the base, the driving gear and the transmission gear are located in the power cabin, the transmission gear is meshed with the driving gear, and the transmission gear is transmission-connected to the stirring mechanism.

[0008] The drive motor is the main power source of the power mechanism. When performing stirring operations, the drive motor outputs torque, thereby driving the driving gear to rotate in the power compartment, and then driving the transmission gear meshing with it to rotate, thereby driving the stirring mechanism to move and stir the sample.

[0009] Furthermore, the stirring mechanism includes a tank body and a transmission shaft, the tank body is tightly connected to the base, a feed port is provided on the tank body, the transmission shaft is rotatably connected to the tank body, the transmission gear is transmission-connected to the transmission shaft, a plurality of stirring blades are circumferentially arranged on the transmission shaft, a liquid flow channel is provided in the transmission shaft, a distribution valve is provided at the water outlet of the liquid flow channel, the distribution valve is connected to the detector, an adjusting component is provided at one end of the transmission shaft close to the bottom of the tank body, and the adjusting component is used to adjust the on-off of the liquid flow channel.

[0010] Several groups of stirring mechanisms are arranged on the base, which can realize the simultaneous processing of multiple groups of samples; the tank body is fixed on the base, and the power mechanism can drive the transmission shaft to rotate, and then drive the stirring blades arranged around the transmission shaft to rotate, so as to stir the samples in the tank body, thereby promoting the precipitation of pesticides in the samples; samples and extracts can be added through the feed port on the tank body. After the stirring is completed, the adjustment component opens the liquid flow channel, and the liquid flows from the liquid flow channel into the distribution valve, and then flows into the detector through the distribution valve for detection.

[0011] Furthermore, the adjustment component includes an adjustment motor, a movable ring and an adjustment gear. A flow hole and a transmission cavity are provided on the transmission shaft. The adjustment motor is fastened to the inner wall of the transmission cavity. The output end of the adjustment motor is transmission-connected to the adjustment gear. The movable ring is rotationally connected to the transmission cavity. A gear ring is provided on one end of the movable ring close to the adjustment gear, and the gear ring is meshed with the adjustment gear.

[0012] The regulating motor is the main power source of the regulating component. When the opening and closing of the liquid flow channel needs to be adjusted, the regulating motor outputs torque to drive the regulating gear to rotate. The regulating gear transmits the torque to the gear ring on the movable ring, thereby driving the movable ring to rotate freely along the transmission cavity, thereby controlling the opening and closing of the flow hole. When stirring, the flow hole is blocked by the movable ring, and the sample and the extract are stirred evenly in the tank body.

[0013] Furthermore, filter holes and slag discharge holes are arranged circumferentially of the movable ring, a filter mesh layer is provided on the filter holes, and the filter holes and slag discharge holes are connected to the liquid flow channel;

[0014] During detection: the filter hole is connected with the flow hole;

[0015] During cleaning: the slag discharge hole is connected with the flow hole.

[0016] After the stirring is completed, the movable ring rotates under the drive of the adjusting motor, and the filter hole is rotated to the position overlapping with the flow hole. Because the filter hole is covered with a filter layer, only clean extraction liquid can pass through, thereby realizing the automatic separation of the sample and the extraction liquid; when cleaning, the cleaning liquid is added into the tank body from the feed port. After the cleaning is completed, the movable ring rotates under the drive of the adjusting motor, and the slag discharge hole is rotated to the position overlapping with the flow hole. The aperture of the slag discharge hole is the same as that of the flow hole, and the sample debris and the cleaning liquid can flow out of the tank body smoothly, thereby realizing the automatic cleaning of the tank body.

[0017] Furthermore, the stirring blade is arranged on the transmission shaft at an angle, and a guide component and a circulation component are provided on the water-facing surface of the stirring blade. The guide component is used to guide the sample, and the circulation component is used to promote the dispersion of the sample.

[0018] When the inclined stirring blade rotates, the mixed liquid of the sample and the extract in the tank body will flow upward along the inclined surface of the stirring blade. However, since the crushed food samples will agglomerate together, the precipitation of the pesticide will be incomplete, which will easily affect the detection accuracy. The mixed liquid is guided by the guide component and directed to the circulation component, so that the mixed liquid can be locally circulated in the circulation component, thereby promoting the dispersion of sample debris and thus promoting the precipitation of pesticides.

[0019] Furthermore, the guide assembly includes an upper plate and a lower plate, the upper plate is tightly connected to the stirring blade, the lower plate is slidably connected to the stirring blade, a flow gap is provided between the upper plate and the lower plate, a slide groove is provided on the stirring blade, a protrusion is provided on the lower plate, the protrusion is slidably connected to the slide groove, a pressure sensor and a support spring are respectively provided at both ends of the protrusion, the pressure sensor is tightly connected to the inner wall of the slide groove, and the pressure sensor is externally connected to the control system.

[0020] When the mixed liquid moves upward along the inclined surface of the stirring blade, it will flow through the flow gap between the upper plate and the lower plate. The flow cross-section of this flow gap is gradually reduced, which accelerates the mixed liquid and guides the mixed liquid to the circulation component; the support spring plays the role of supporting the protrusion, and because the distribution of sample debris in the mixed liquid is uneven, when the mixed liquid flows through the lower plate, under the action of fluid resistance, it will push the lower plate to slide upward along the slide groove, and the more debris content in the liquid, the greater the thrust on the lower plate, the more the lower plate tends to slide upward along the slide groove, and the greater the pressure on the pressure sensor from the protrusion; that is, the more debris content in the liquid, the greater the pressure on the pressure sensor.

[0021] Furthermore, the circulation component includes an arc plate and a bracket, one end of the arc plate is hinged to the top of the stirring blade, and the other end of the arc plate is slidably connected to the bracket. The arc plate is elastic, and the bracket is firmly connected to the stirring blade.

[0022] When the liquid flows to the curved plate on the circulation component, the liquid will flow along the wall of the curved plate and eventually flow out of the curved plate at a certain angle and hit the upper plate. Under the action of the impact force, the sample debris in the mixed liquid is dispersed, thereby promoting the precipitation of the pesticide.

[0023] Furthermore, the circulation component also includes a connecting rod, an electromagnet, a piston and an adjusting spring. A guide groove and an adjusting groove are provided on the bracket. A guide column is provided on the side of the arc plate close to the bracket. The guide column is slidably connected to the guide groove. One end of the connecting rod is tightly connected to the guide column, and the other end of the connecting rod is tightly connected to the piston. One end of the adjusting spring is tightly connected to the piston, and the other end of the adjusting spring is tightly connected to the wall of the adjusting groove. The electromagnet is tightly connected to the wall of the adjusting groove. The electromagnet and the piston are arranged facing each other. The electromagnet is externally connected to the control system, and the piston is made of ferromagnetic material.

[0024] Because the more debris content in the liquid, the greater the pressure on the pressure sensor, the greater the current transmitted to the electromagnet by the control system, and the piston is driven to move along the adjusting groove toward the electromagnet under the action of magnetic force, and the adjusting spring is stretched. Under the action of the connecting rod, the guide column on the arc plate will also move in the same direction along the guide groove. The arc plate is elastic, so the arc plate will bend toward the side of the stirring blade. At this time, the liquid flowing out of the arc plate will tend to hit the upper plate vertically, that is, the distance to the upper plate is shortened, the speed loss is less, the greater the impact force, and the better the dispersion effect; that is, it realizes automatic control of the dispersion force according to the amount of debris in the liquid, thereby improving the dispersion efficiency.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. After the stirring is completed, the movable ring rotates under the drive of the regulating motor, and the filter hole is rotated to the position overlapping with the flow hole. Because the filter hole is covered with a filter layer, only clean extract can pass through, that is, the automatic separation of the sample and the extract is realized; when cleaning, the cleaning liquid is added into the tank body from the feed port. After the cleaning is completed, the movable ring rotates under the drive of the regulating motor, and the slag discharge hole is rotated to the position overlapping with the flow hole. The aperture of the slag discharge hole is the same as that of the flow hole, and the sample debris and the cleaning liquid can flow out of the tank body smoothly, that is, the automatic cleaning of the tank body is realized.

[0027] 2. When the inclined stirring blade rotates, the mixed liquid of the sample and the extract in the tank body will flow upward along the inclined surface of the stirring blade, and the mixed liquid will be guided by the guide component to the circulation component, so that the mixed liquid can be locally circulated in the circulation component, thereby promoting the dispersion of sample debris and thus promoting the precipitation of pesticides.

[0028] 3. The more debris content in the liquid, the greater the pressure on the pressure sensor, and the greater the current transmitted to the electromagnet by the control system. Under the action of magnetic force, the piston is driven to move along the adjustment groove toward the electromagnet. Under the action of the connecting rod, the guide column on the arc plate will also move in the same direction along the guide groove. Therefore, the arc plate will bend toward the side of the stirring blade. At this time, the liquid flowing out of the arc plate will tend to hit the upper plate vertically, that is, the distance from the upper plate to the upper plate is shortened, the speed loss is less, the greater the impact force, and the better the dispersion effect; that is, it realizes automatic control of the dispersion force according to the amount of debris in the liquid, thereby improving the dispersion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the power mechanism of the present invention;

[0031] Figure 3 It is a schematic diagram of the stirring mechanism of the present invention;

[0032] Figure 4 It is a schematic diagram of the adjustment component of the present invention;

[0033] Figure 5 for Figure 4 A local enlarged view of point A;

[0034] Figure 6 is a cross-sectional view of the movable ring;

[0035] Figure 7 It is a schematic diagram of the structure of the stirring blade;

[0036] Figure 8 for Figure 7 A partial enlarged view of point B;

[0037] Fig. 9 It is a schematic diagram of the action of the loop component;

[0038] Fig.10 Fig. 9 A partial enlarged view of point C.

[0039] In the figure: 1, base; 11, power cabin; 2, power mechanism; 21, driving motor; 22, driving gear; 23, transmission gear; 3, stirring mechanism; 31, tank; 311, feed port; 32, transmission shaft; 321, liquid flow channel; 322, flow hole; 323, transmission cavity; 33, stirring blade; 331, slide; 34, adjustment component; 341, adjustment motor; 342, movable ring; 3421, gear ring; 3422, filter hole; 342 3. Slag discharge hole; 343. Adjusting gear; 35. Guide assembly; 351. Upper plate; 352. Lower plate; 3521. Protrusion; 353. Pressure sensor; 354. Support spring; 36. Circulation assembly; 361. Arc plate; 3611. Guide column; 362. Bracket; 3621. Guide groove; 3622. Adjusting groove; 363. Connecting rod; 364. Electromagnet; 365. Piston; 366. Adjusting spring; 4. Detector; 5. Distribution valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example: Figure 1 - Fig.10 As shown, the present invention provides a technical solution of a fully automatic detector for detecting pesticide residues in food. The fully automatic detector includes a base 1, a power mechanism 2, a stirring mechanism 3 and a detector 4. The power mechanism 2 is tightly connected to the base 1, the power mechanism 2 is transmission-connected to the stirring mechanism 3, the stirring mechanism 3 is tightly connected to the base 1, the stirring mechanism 3 is communicated with the detector 4, the stirring mechanism 3 is used to transport the sample liquid to the detector 4, and the detector 4 is used to detect pesticide residues in food.

[0042] The base 1 is used to provide stable support for the power mechanism 2 and the stirring mechanism 3. The power mechanism 2 is used to drive the stirring mechanism 3 to move. When testing, the crushed sample is first added to the stirring mechanism 3, and then the extract is added for stirring to promote the precipitation of the pesticide components in the sample. Finally, the liquid to be tested is introduced into the detector 4 for testing. The detector 4 can be tested by immunoassay. The detection method is roughly as follows: the extracted liquid is added to the detection card of the immunochromatographic test paper, and the substance to be tested in the sample begins to react with the label antibody in the test paper. There are specific capture antibodies or antigens on the test paper, and these antibodies or antigens will specifically bind to the target substance in the sample. If the sample contains the target substance, the target substance will react with the capture antibody on the test paper and form a visible signal on the test paper. The pesticide residue can be determined by the corresponding visual detection method.

[0043] A power cabin 11 is provided on the base 1, and the power mechanism 2 includes a driving motor 21, a driving gear 22 and a transmission gear 23. The driving motor 21 is tightly connected to the base 1, and the output end of the driving motor 21 is transmission-connected to the driving gear 22, and the driving gear 22 is rotationally connected to the base 1. The driving gear 22 and the transmission gear 23 are located in the power cabin 11, and the transmission gear 23 is meshed with the driving gear 22, and the transmission gear 23 is transmission-connected to the stirring mechanism 3.

[0044] The driving motor 21 is the main power source of the power mechanism 2. When performing the stirring operation, the driving motor 21 outputs torque, thereby driving the driving gear 22 to rotate in the power compartment 11, and then driving the transmission gear 23 meshing with it to rotate, thereby driving the stirring mechanism 3 to move and stir the sample.

[0045] The stirring mechanism 3 includes a tank body 31 and a transmission shaft 32. The tank body 31 is tightly connected to the base 1. A feed port 311 is provided on the tank body 31. The transmission shaft 32 is rotatably connected to the tank body 31. The transmission gear 23 is transmission-connected to the transmission shaft 32. A plurality of stirring blades 33 are arranged circumferentially of the transmission shaft 32. A liquid flow channel 321 is provided in the transmission shaft 32. A distribution valve 5 is provided at the water outlet of the liquid flow channel 321. The distribution valve 5 is connected to the detector 4. An adjusting component 34 is provided at one end of the transmission shaft 32 close to the bottom of the tank body 31. The adjusting component 34 is used to adjust the on-off of the liquid flow channel 321.

[0046] Several groups of stirring mechanisms 3 are arranged on the base 1, so that multiple groups of samples can be processed simultaneously; the tank body 31 is fixed on the base 1, and the power mechanism 2 can drive the transmission shaft 32 to rotate, thereby driving the stirring blades 33 arranged around the transmission shaft 32 to rotate, thereby stirring the sample in the tank body 31, thereby promoting the precipitation of pesticides in the sample; the sample and the extract can be added through the feed port 311 on the tank body 31. After the stirring is completed, the regulating component 34 opens the liquid flow channel 321, and the liquid flows from the liquid flow channel 321 into the distribution valve 5, and then flows into the detector 4 through the distribution valve 5 for detection.

[0047] The adjusting assembly 34 includes an adjusting motor 341, a movable ring 342 and an adjusting gear 343. A flow hole 322 and a transmission chamber 323 are provided on the transmission shaft 32. The adjusting motor 341 is fixedly connected to the inner wall of the transmission chamber 323. The output end of the adjusting motor 341 is transmission-connected to the adjusting gear 343. The movable ring 342 is rotationally connected to the transmission chamber 323. A gear ring 3421 is provided on one end of the movable ring 342 close to the adjusting gear 343, and the gear ring 3421 is meshed with the adjusting gear 343.

[0048] The regulating motor 341 is the main power source of the regulating component 34. When the opening and closing of the liquid flow channel 321 needs to be adjusted, the regulating motor 341 outputs a torque to drive the regulating gear 343 to rotate. The regulating gear 343 transmits the torque to the gear ring 3421 on the movable ring 342, thereby driving the movable ring 342 to rotate freely along the transmission cavity 323, thereby controlling the opening and closing of the flow hole 322. When stirring, the flow hole 322 is blocked by the movable ring 342, and the sample and the extract are stirred evenly in the tank body 31.

[0049] The movable ring 342 is circumferentially arranged with filter holes 3422 and slag discharge holes 3423. The filter holes 3422 are provided with a filter layer. The filter holes 3422 and the slag discharge holes 3423 are connected to the liquid flow channel 321.

[0050] During detection: the filter hole 3422 is connected with the flow hole 322;

[0051] During cleaning: the slag discharge hole 3423 is connected with the flow hole 322.

[0052] After the stirring is completed, the movable ring 342 is driven by the adjusting motor 341 to rotate, and the filter hole 3422 is rotated to a position overlapping with the flow hole 322. Because the filter hole 3422 is covered with a filter layer, only clean extract can pass through, thereby realizing automatic separation of the sample and the extract; when cleaning, the cleaning liquid is added into the tank body 31 from the feed port 311. After the cleaning is completed, the movable ring 342 is driven by the adjusting motor 341 to rotate, and the slag discharge hole 3423 is rotated to a position overlapping with the flow hole 322. The aperture of the slag discharge hole 3423 is the same as that of the flow hole 322. The sample debris and the cleaning liquid can flow out of the tank body 31 smoothly, thereby realizing automatic cleaning of the tank body 31.

[0053] The stirring blade 33 is arranged obliquely on the transmission shaft 32. A flow guide component 35 and a circulation component 36 are provided on the water-facing surface of the stirring blade 33. The flow guide component 35 is used to guide the sample, and the circulation component 36 is used to promote the dispersion of the sample.

[0054] When the inclined stirring blade 33 rotates, the mixed liquid of the sample and the extract in the tank body will flow upward along the inclined surface of the stirring blade 33. However, since the crushed food samples will agglomerate together, the precipitation of the pesticide will be incomplete, which will easily affect the detection accuracy. The mixed liquid is guided by the guide component 35 and directed to the circulation component 36, so that the mixed liquid can be locally circulated in the circulation component 36, thereby promoting the dispersion of sample debris and thus promoting the precipitation of pesticides.

[0055] The flow guide assembly 35 includes an upper plate 351 and a lower plate 352. The upper plate 351 is tightly connected to the stirring blade 33, and the lower plate 352 is slidably connected to the stirring blade 33. A flow gap is provided between the upper plate 351 and the lower plate 352. A slide groove 331 is provided on the stirring blade 33, and a protrusion 3521 is provided on the lower plate 352. The protrusion 3521 is slidably connected to the slide groove 331. A pressure sensor 353 and a support spring 354 are respectively provided at both ends of the protrusion 3521. The pressure sensor 353 is tightly connected to the inner wall of the slide groove 331, and the pressure sensor 353 is externally connected to the control system.

[0056] When the mixed liquid moves upward along the inclined surface of the stirring blade 33, it will flow through the flow gap between the upper plate 351 and the lower plate 352. The flow cross-section of this flow gap is gradually reduced, which plays a role in accelerating the mixed liquid, thereby guiding the mixed liquid to the circulation component; the support spring 354 plays the role of supporting the protrusion 3521, and because the distribution of sample debris in the mixed liquid is uneven, when the mixed liquid flows through the lower plate 352, under the action of fluid resistance, the lower plate 352 will be pushed to slide upward along the slide groove 331. The more debris content in the liquid, the greater the thrust on the lower plate 352, the more the lower plate 352 tends to slide upward along the slide groove 331, and the greater the pressure on the pressure sensor 353 from the protrusion 3521; that is, the more debris content in the liquid, the greater the pressure on the pressure sensor 353.

[0057] The circulation component 36 includes an arc plate 361 and a bracket 362 . One end of the arc plate 361 is hinged to the top of the stirring blade 33 , and the other end of the arc plate 361 is slidably connected to the bracket 362 . The arc plate 361 is elastic, and the bracket 362 is firmly connected to the stirring blade 33 .

[0058] When the liquid flows to the arc plate 361 on the circulation component 36, the liquid will flow along the wall of the arc plate 361, and finally flow out of the arc plate 361 at a certain angle and hit the upper plate 351. Under the action of the impact force, the sample debris in the mixed liquid is dispersed, thereby promoting the precipitation of the pesticide.

[0059] The circulation component 36 also includes a connecting rod 363, an electromagnet 364, a piston 365 and an adjusting spring 366. A guide groove 3621 and an adjusting groove 3622 are provided on the bracket 362. A guide column 3611 is provided on the side of the arc plate 361 close to the bracket 362. The guide column 3611 is slidably connected to the guide groove 3621. One end of the connecting rod 363 is tightly connected to the guide column 3611, and the other end of the connecting rod 363 is tightly connected to the piston 365. One end of the adjusting spring 366 is tightly connected to the piston 365, and the other end of the adjusting spring 366 is tightly connected to the wall of the adjusting groove 3622. The electromagnet 364 is tightly connected to the wall of the adjusting groove 3622. The electromagnet 364 and the piston 365 are arranged opposite to each other. The electromagnet 364 is externally connected to the control system. The piston 365 is made of ferromagnetic material.

[0060] Because the more debris content in the liquid, the greater the pressure on the pressure sensor 353, the greater the current transmitted to the electromagnet 364 by the control system, and the piston 365 is driven to move along the adjustment groove 3622 toward the electromagnet 364 under the action of magnetic force, and the adjustment spring 366 is stretched. Under the action of the connecting rod 363, the guide column 3611 on the arc plate 361 will also move in the same direction along the guide groove 3621, and the arc plate 361 is elastic, so the arc plate 361 will bend toward the side of the stirring blade 33. At this time, the liquid flowing out of the arc plate 361 will tend to hit the upper plate 351 vertically, that is, the distance to the upper plate 351 is shortened, the speed loss is less, the greater the impact force, and the better the dispersion effect; that is, it is realized that the dispersion force is automatically controlled according to the amount of debris in the liquid, thereby improving the dispersion efficiency.

[0061] The working principle of the present invention is as follows: first, the crushed sample is added into the stirring mechanism 3, then the extracting liquid is added for stirring to promote the separation of the pesticide components in the sample, and finally the liquid to be detected is introduced into the detector 4 for detection; after the stirring is completed, the movable ring 342 is driven by the regulating motor 341 to rotate, and the filter hole 3422 is rotated to a position that coincides with the flow hole 322, and the clean extracting liquid automatically flows to the detector 4; when cleaning, the cleaning liquid is added into the tank body 31 from the feed port 311, and after the cleaning is completed, the movable ring 342 is driven by the regulating motor 341 to rotate, and the filter hole 3422 is rotated to a position that coincides with the flow hole 322, and the clean extracting liquid automatically flows to the detector 4; when cleaning is performed, the cleaning liquid is added into the tank body 31 from the feed port 311, and after the cleaning is completed, the movable ring 342 is driven by the regulating motor 341 to rotate, and the filter hole 3422 is rotated to a position that coincides with the flow hole 322, and the clean extracting liquid automatically flows to the detector 4 The machine 341 is driven to rotate, and the slag discharge hole 3423 is rotated to a position overlapping with the flow hole 322, so that the sample debris and the cleaning liquid can flow out of the tank body 31 smoothly, thereby realizing automatic cleaning of the tank body 31; when the inclined stirring blade 33 rotates, the mixed liquid of the sample and the extract in the tank body will flow upward along the inclined surface of the stirring blade 33, and the mixed liquid will be guided by the guide component 35 to the circulation component 36, so that the mixed liquid can be locally circulated in the circulation component 36, thereby promoting the dispersion of the sample debris and thus promoting the precipitation of the pesticide.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A fully automatic detector for detecting pesticide residues in food, characterized in that: The fully automatic detector comprises a base (1), a power mechanism (2), a stirring mechanism (3) and a detector (4); the power mechanism (2) is tightly connected to the base (1); the power mechanism (2) is transmission-connected to the stirring mechanism (3); the stirring mechanism (3) is tightly connected to the base (1); the stirring mechanism (3) is communicated with the detector (4); the stirring mechanism (3) is used to transport sample liquid to the detector (4); and the detector (4) is used to detect pesticide residues in food.

2. The fully automatic detector for detecting pesticide residues in food according to claim 1, characterized in that: The base (1) is provided with a power cabin (11), and the power mechanism (2) comprises a driving motor (21), a driving gear (22) and a transmission gear (23); the driving motor (21) is firmly connected to the base (1); the output end of the driving motor (21) is transmission-connected to the driving gear (22); the driving gear (22) is rotationally connected to the base (1); the driving gear (22) and the transmission gear (23) are located in the power cabin (11); the transmission gear (23) is meshed with the driving gear (22); and the transmission gear (23) is transmission-connected to the stirring mechanism (3).

3. The fully automatic detector for detecting pesticide residues in food according to claim 2, characterized in that: The stirring mechanism (3) comprises a tank body (31) and a transmission shaft (32); the tank body (31) is tightly connected to the base (1); a feed port (311) is provided on the tank body (31); the transmission shaft (32) is rotationally connected to the tank body (31); the transmission gear (23) is transmission-connected to the transmission shaft (32); a plurality of stirring blades (33) are arranged circumferentially of the transmission shaft (32); a liquid flow channel (321) is provided in the transmission shaft (32); a distribution valve (5) is provided at a water outlet of the liquid flow channel (321); the distribution valve (5) is communicated with a detector (4); an adjustment component (34) is provided at one end of the transmission shaft (32) close to the bottom of the tank body (31); the adjustment component (34) is used to adjust the on and off of the liquid flow channel (321).

4. The fully automatic detector for detecting pesticide residues in food according to claim 3, characterized in that: The regulating assembly (34) comprises a regulating motor (341), a movable ring (342) and an regulating gear (343); the transmission shaft (32) is provided with a flow hole (322) and a transmission cavity (323); the regulating motor (341) is tightly connected to the inner wall of the transmission cavity (323); the output end of the regulating motor (341) is transmission-connected to the regulating gear (343); the movable ring (342) is rotationally connected to the transmission cavity (323); a gear ring (3421) is provided at one end of the movable ring (342) close to the regulating gear (343); the gear ring (3421) is meshed with the regulating gear (343).

5. The fully automatic detector for detecting pesticide residues in food according to claim 4, characterized in that: The movable ring (342) is provided with filter holes (3422) and slag discharge holes (3423) in the circumferential direction, the filter holes (3422) are provided with filter screen layers, and the filter holes (3422) and slag discharge holes (3423) are in communication with the liquid flow channel (321); During detection: the filter hole (3422) is connected to the flow hole (322); During cleaning: the slag discharge hole (3423) is connected to the flow hole (322).

6. A fully automatic detector for detecting pesticide residues in food according to claim 5, characterized in that: The stirring blade (33) is arranged obliquely on the transmission shaft (32), and a flow guide component (35) and a circulation component (36) are provided on the water-facing surface of the stirring blade (33), wherein the flow guide component (35) is used to guide the sample, and the circulation component (36) is used to promote dispersion of the sample.

7. The fully automatic detector for detecting pesticide residues in food according to claim 6, characterized in that: The flow guide assembly (35) comprises an upper plate (351) and a lower plate (352); the upper plate (351) is fixedly connected to the stirring blade (33); the lower plate (352) is slidably connected to the stirring blade (33); a flow gap is provided between the upper plate (351) and the lower plate (352); a slide groove (331) is provided on the stirring blade (33); a protrusion (3521) is provided on the lower plate (352); the protrusion (3521) is slidably connected to the slide groove (331); a pressure sensor (353) and a support spring (354) are respectively provided at two ends of the protrusion (3521); the pressure sensor (353) is fixedly connected to the inner wall of the slide groove (331); and the pressure sensor (353) is externally connected to a control system.

8. The fully automatic detector for detecting pesticide residues in food according to claim 7, characterized in that: The circulation assembly (36) comprises an arc-shaped plate (361) and a bracket (362); one end of the arc-shaped plate (361) is hinged to the top end of the stirring blade (33); the other end of the arc-shaped plate (361) is slidably connected to the bracket (362); the arc-shaped plate (361) is elastic; and the bracket (362) is firmly connected to the stirring blade (33).

9. A fully automatic detector for detecting pesticide residues in food according to claim 8, characterized in that: The circulation assembly (36) further comprises a connecting rod (363), an electromagnet (364), a piston (365) and an adjusting spring (366); the bracket (362) is provided with a guide groove (3621) and an adjusting groove (3622); a guide column (3611) is provided on a side of the arc plate (361) close to the bracket (362); the guide column (3611) is slidably connected to the guide groove (3621); one end of the connecting rod (363) is fastened to the guide column (3611). Then, the other end of the connecting rod (363) is tightly connected to the piston (365), one end of the adjusting spring (366) is tightly connected to the piston (365), the other end of the adjusting spring (366) is tightly connected to the wall surface of the adjusting groove (3622), the electromagnet (364) is tightly connected to the wall surface of the adjusting groove (3622), the electromagnet (364) and the piston (365) are arranged facing each other, the electromagnet (364) is externally connected to a control system, and the piston (365) is made of ferromagnetic material.

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