Device for detecting pesticide residues in vegetables

Abstract

The utility model discloses a device for detecting pesticide residues in vegetables, and relates to the technical field of pesticide residue detection. Comprising a box body, a bearing mechanism mounted on the box body and used for bearing a vegetable sample, a liquid feeding mechanism mounted on the box body and used for injecting an eluent into the bearing mechanism, and a detection mechanism mounted on the box body and used for detecting pesticide residues after elution of vegetables, the bearing mechanism comprises a detection table movably arranged in the box body and a sample groove formed in the top of the detection table, and a stirring mechanism is arranged in the detection table. According to the utility model, the rotating rod and the stirring piece can be driven to rotate through the movement of the detection table and the matching of the meshing of the gear and the rack, and the rotating stirring piece can push and stir a vegetable sample and an eluent in the sample groove, so that the mixing of the vegetable sample and the eluent is accelerated, the standing time of the vegetable sample and the eluent is shortened, and the detection rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide residue detection, in particular to a device for detecting pesticide residues in vegetables. Background Art

[0002] The development of agricultural industrialization has made the production of agricultural products increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones. Therefore, people use pesticide detection devices to detect pesticide residues in agricultural products such as vegetables.

[0003] The patent with announcement number CN213957341U discloses "a rapid fruit and vegetable pesticide residue detection device, which relates to the technical field of fruit and vegetable pesticide residue detection, including a device body. The rapid fruit and vegetable pesticide residue detection device, through the coordination of the rack and the motor, can enable the detection table to move flexibly when the rapid fruit and vegetable pesticide residue detection device is used, so as to achieve the effect of rapid detection. Through the detection rod and the spectrum analyzer, the device body has the function of rapidly detecting the residues of organophosphorus and carbamate pesticides in vegetables, achieving the effect of high detection accuracy and convenient operation."

[0004] With respect to the above-mentioned related technologies, the inventors believe that the eluent injected into the sample slot needs to stand with the vegetable sample for a period of time so that the vegetable sample can fully contact with the eluent to remove the residual pesticides on the surface of the vegetable sample. However, the standing time of the vegetable sample and the eluent is relatively long, which will reduce the detection rate of the device for residual pesticides in vegetables, and therefore needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a device for detecting residual pesticides in vegetables. The specific technical scheme is as follows:

[0006] The device for detecting residual pesticides in vegetables comprises a box, a carrying mechanism installed on the box for carrying vegetable samples, a liquid delivery mechanism installed on the box for injecting eluent into the carrying mechanism, and a detection mechanism installed on the box for detecting residual pesticides in the vegetables after elution, wherein the carrying mechanism comprises a detection table movably arranged in the box, a sample tank arranged on the top of the detection table, and a stirring mechanism is arranged in the detection table;

[0007] The stirring mechanism includes a rotating rod rotatably arranged in the detection platform, and a stirring member fixedly arranged at the top of the rotating rod and located in the sample slot for stirring vegetables and eluent. The box body is provided with a transmission mechanism for rotating the rotating rod in the detection platform after movement.

[0008] By adopting the above technical solution, the detection table can be moved and the transmission of the transmission mechanism can be coordinated to drive the rotating rod and the stirring member to rotate, and the rotating stirring member can push and stir the vegetable sample and eluent in the sample tank.

[0009] Optionally, the transmission mechanism includes a rack fixed in the box body, and a gear fixed on the outer wall of the bottom end of the rotating rod and meshing with the rack.

[0010] By adopting the above technical solution, when the detection platform moves horizontally, the fixed rack will drive the gear that moves with the detection platform to rotate, and after the gear rotates, it will drive the agitator to rotate through the rotating rod.

[0011] Optionally, a groove is provided in the detection platform, one end of the rack is movably arranged in the groove, and a multi-stage electric push rod is fixedly provided between one side of the detection platform and the inner wall of the box body.

[0012] By adopting the above technical solution, the multi-stage electric push rod can drive the testing platform to move horizontally in the box after being extended and retracted.

[0013] Optionally, the liquid delivery mechanism includes an eluent tube fixedly arranged in the box body, and a nozzle fixedly arranged at the bottom end of the eluent tube and located above the sample slot.

[0014] By adopting the above technical solution, the eluent tube can deliver the eluent into the sample tank through the nozzle, so that the eluent can remove the residual pesticides on the surface of the vegetable sample in the sample tank.

[0015] Optionally, the detection mechanism includes a telescopic rod fixed to the bottom of the inner wall of the box, a detection rod and a spectrum analyzer arranged at the bottom of the telescopic rod, a connecting plate is fixed to the bottom of the telescopic rod, and the detection rod and the spectrum analyzer are respectively fixedly connected to both sides of the bottom of the connecting plate.

[0016] By adopting the above technical solution, the telescopic rod can drive the detection rod and the spectrum analyzer to rise and fall after being extended and retracted. After being lowered, the detection rod can dip into the residual pesticide solution after the vegetables are washed in the sample tank, and the spectrum analyzer can perform spectral detection on the dipped solution.

[0017] In summary, the present invention has at least one of the following beneficial effects:

[0018] 1. The movement of the detection platform and the meshing of the gear and the rack can drive the rotating rod and the stirring member to rotate. The rotating stirring member can push and stir the vegetable sample and the eluent in the sample tank, thereby accelerating the mixing of the vegetable sample and the eluent, shortening the standing time of the vegetable sample and the eluent, and improving the detection rate.

[0019] 2. The detection table can be driven to move by the extension and retraction of the multi-stage electric push rod, which is convenient for the liquid delivery mechanism and the detection mechanism to respectively deliver the eluent into the detection table after movement and detect the residual pesticides in the detection table after elution. In addition, multiple processes such as the movement of the detection table and the stirring in the sample tank only require a single multi-stage electric push rod to drive, which is economical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 The utility model Figure 2 A magnified view of the local structure.

[0023] Explanation of the reference numerals: 1. housing; 2. testing table; 21. sample slot; 22. groove; 23. rotating rod; 24. stirring member; 3. eluent tube; 31. nozzle; 4. telescopic rod; 41. connecting plate; 42. testing rod; 43. spectrometer; 5. rack; 51. gear; 6. multi-stage electric push rod. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 The utility model is described in further detail.

[0025] The utility model embodiment discloses a device for detecting residual pesticides in vegetables, referring to Figure 1-2 It includes a box body 1, a carrying mechanism installed on the box body 1 for carrying vegetable samples, a liquid delivery mechanism installed on the box body 1 for injecting elution liquid into the carrying mechanism, and a detection mechanism installed on the box body 1 for detecting residual pesticides after vegetable elution. A box door is rotatably provided on one side of the box body 1, so that people can open the box door to inspect the internal components of the box body 1.

[0026] Reference Figure 2-3 The carrying mechanism includes a testing platform 2 movably arranged in the box body 1, and a sample slot 21 opened on the top of the testing platform 2. A multi-stage electric push rod 6 is fixedly arranged between one side of the testing platform 2 and the inner wall of the box body 1. After the multi-stage electric push rod 6 is extended and retracted, it can drive the testing platform 2 to move horizontally in the box body 1, and people can put vegetable samples into the sample slot 21.

[0027] Reference Figure 2-3 A stirring mechanism is provided in the detection platform 2, and the stirring mechanism includes a rotating rod 23 rotatably provided in the detection platform 2, and a stirring member 24 fixedly provided at the top of the rotating rod 23 and located in the sample slot 21 for stirring the vegetables and the eluent. A transmission mechanism is provided in the box body 1 for rotating the rotating rod 23 in the detection platform 2 after movement. The stirring member 24 can be an L-shaped rod, and the stirring member 24 will rotate with the rotating rod 23, and the stirring member 24 will support the rotating rod 23. A sealing member can be provided at the connection between the rotating rod 23 and the detection platform 2. The sealing member is a public technology and will not be described in detail here.

[0028] Reference Figure 2-3The transmission mechanism includes a rack 5 fixed in the box body 1, and a gear 51 fixed on the outer wall of the bottom end of the rotating rod 23 and meshing with the rack 5. When the detection platform 2 moves laterally, the fixed rack 5 will drive the gear 51 that moves with the detection platform 2 to rotate. After the gear 51 rotates, it will drive the stirring member 24 to rotate through the rotating rod 23. The rotating stirring member 24 can stir the vegetable sample and the eluent in the sample slot 21, thereby accelerating the mixing of the vegetable sample and the eluent.

[0029] Reference Figure 2-3 A groove 22 is provided in the testing platform 2 , and one end of the rack 5 is movably arranged in the groove 22 , and the groove 22 can limit the rack 5 .

[0030] Reference Figure 2 The liquid delivery mechanism includes an eluent tube 3 fixedly arranged in the box body 1, and a nozzle 31 fixedly arranged at the bottom end of the eluent tube 3 and located above the sample slot 21. When the sample slot 21 of the detection platform 2 moves to directly below the nozzle 31, the eluent tube 3 can deliver the eluent into the sample slot 21 through the nozzle 31, so that the eluent can remove the residual pesticides on the surface of the vegetable sample in the sample slot 21. The top end of the eluent tube 3 can be connected to the existing eluent delivery equipment, which will not be elaborated here.

[0031] Reference Figure 2 The detection mechanism includes a telescopic rod 4 fixedly arranged at the bottom of the inner wall of the box body 1, a detection rod 42 and a spectrum analyzer 43 arranged at the bottom of the telescopic rod 4, a connecting plate 41 is fixedly arranged at the bottom of the telescopic rod 4, the detection rod 42 and the spectrum analyzer 43 are respectively fixedly connected to the two sides of the bottom of the connecting plate 41, and the connecting plate 41 can connect the telescopic rod 4, the detection rod 42 and the spectrum analyzer 43. The telescopic rod 4 is a telescopic device such as an existing electric push rod, a hydraulic cylinder and a pneumatic cylinder.

[0032] After the telescopic rod 4 is extended and retracted, it can drive the detection rod 42 and the spectrum analyzer 43 to rise and fall. After the detection rod 42 is lowered, it can dip into the residual pesticide solution after the vegetables are washed in the sample tank 21. The spectrum analyzer 43 can perform spectral detection on the dipped solution to detect the residual organophosphorus and carbamate pesticides in the vegetables. The internal structure and principle of the detection rod 42 and the spectrum analyzer 43 have been disclosed and will not be elaborated here.

[0033] The implementation principle of the device for detecting pesticide residues in vegetables in the embodiment of the utility model is:

[0034] When in use, people can put the vegetable sample into the sample slot 21, and then shorten the multi-stage electric push rod 6 to make the detection platform 2 move laterally toward the inside of the box 1. When the detection platform 2 moves laterally, the fixed rack 5 will drive the gear 51 that moves with the detection platform 2 to rotate. After the gear 51 rotates, it will drive the stirring member 24 to rotate through the rotating rod 23;

[0035] When the sample tank 21 of the detection platform 2 moves to the position directly below the nozzle 31, the eluent tube 3 can deliver the eluent into the sample tank 21 through the nozzle 31. At the same time, as the detection platform 2 moves, the rotating stirring member 24 can stir the vegetable sample and the eluent in the sample tank 21, thereby accelerating the mixing of the vegetable sample and the eluent, so that the eluent can remove the residual pesticides on the surface of the vegetable sample in the sample tank 21, thereby shortening the standing time of the vegetable sample and the eluent.

[0036] After standing still, people can continue to shorten the multi-stage electric push rod 6 so that the sample slot 21 of the detection table 2 can be moved to just below the detection rod 42, and then people can control the telescopic rod 4 to extend and retract to drive the detection rod 42 and the spectrometer 43 to rise and fall. After the detection rod 42 descends, it can dip the residual pesticide solution after the vegetables are washed in the sample slot 21, and the spectrometer 43 can perform spectral detection on the dipped solution to detect the residual organophosphorus and carbamate pesticides in the vegetables.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for detecting residual pesticides in vegetables, comprising a housing (1), a carrying mechanism installed on the housing (1) for carrying vegetable samples, a liquid delivery mechanism installed on the housing (1) for injecting an eluent into the carrying mechanism, and a detection mechanism installed on the housing (1) for detecting residual pesticides in vegetables after elution, characterized in that: The carrying mechanism comprises a testing platform (2) movably arranged in the box (1), and a sample slot (21) provided on the top of the testing platform (2); a stirring mechanism is provided in the testing platform (2); The stirring mechanism comprises a rotating rod (23) rotatably arranged in the detection platform (2), and a stirring member (24) fixedly arranged at the top of the rotating rod (23) and located in the sample tank (21) for stirring the vegetables and the eluent. The housing (1) is provided with a transmission mechanism for rotating the rotating rod (23) in the detection platform (2) after the movement.

2. The device for detecting pesticide residues in vegetables according to claim 1, characterized in that: The transmission mechanism comprises a rack (5) fixedly arranged in the box body (1), and a gear (51) fixedly arranged on the outer wall of the bottom end of the rotating rod (23) and meshing with the rack (5).

3. The device for detecting pesticide residues in vegetables according to claim 2, characterized in that: A groove (22) is provided in the detection platform (2), and one end of the rack (5) is movably disposed in the groove (22).

4. The device for detecting pesticide residues in vegetables according to claim 1, characterized in that: A multi-stage electric push rod (6) is fixedly provided between one side of the detection platform (2) and the inner wall of the box body (1).

5. The device for detecting pesticide residues in vegetables according to claim 1, characterized in that: The liquid delivery mechanism comprises an eluent tube (3) fixedly arranged in the box body (1), and a spray head (31) fixedly arranged at the bottom end of the eluent tube (3) and located above the sample tank (21).

6. The device for detecting pesticide residues in vegetables according to claim 1, characterized in that: The detection mechanism comprises a telescopic rod (4) fixedly arranged at the bottom of the inner wall of the box body (1), a detection rod (42) arranged at the bottom of the telescopic rod (4), and a spectrum analyzer (43).

7. The device for detecting pesticide residues in vegetables according to claim 6, characterized in that: A connecting plate (41) is fixedly provided at the bottom end of the telescopic rod (4), and the detection rod (42) and the spectrum analyzer (43) are respectively fixedly connected to two sides of the bottom of the connecting plate (41).

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