System for detecting pesticide residues of agricultural food products

Abstract

The utility model belongs to the technical field of pesticide detection, and particularly relates to a system for detecting pesticide residues of agricultural food products, which comprises a support frame, a plurality of integrated sampling devices and a plurality of pesticide detection devices, each integrated sampling device comprises a crushing assembly, an extruding and filtering assembly and a collecting and draining assembly, and the adjustable part can adjust the downward movement bottom of the crushing assembly to be close to the bottom of the extrusion filtering assembly, so that the crushed objects in the extrusion filtering assembly can be extruded to obtain juice, and the juice is collected into the drainage assembly and can drop into the pesticide detection device for detecting pesticide residues. Compared with the prior art, the agricultural food product detection device has the advantages that various agricultural food products of different types can be detected at the same time, and various independent devices with different functions do not need to be consumed, so that resources are not consumed, time can be saved, the agricultural food product detection device is simple and convenient, and the agricultural food product detection efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pesticide detection, and in particular relates to a system for detecting pesticide residues in agricultural and food products. Background Art

[0002] Spraying pesticides on agricultural and food products can keep them away from pests and diseases. However, pesticides will remain on agricultural and food products. Excessive pesticide residues in agricultural and food products will cause health hazards to people who eat them. Therefore, it is necessary to test agricultural and food products for pesticide residues before eating them. When testing agricultural and food products for pesticide residues, pesticide residue detection devices and auxiliary devices are usually required for testing.

[0003] In the prior art, in order to solve the existing detection of pesticide residues in fruits and vegetables, a crushing device is first required to crush the fruits and vegetables, and then an extrusion device is used to extrude the crushed material, and the squeezed juice is filtered, and finally the filtered solution is obtained for detection. It can be seen that a set of devices in the prior art can only detect the same agricultural and food products at a time, but the types of agricultural and food products are rich. If multiple different types of agricultural and food products are detected at the same time, multiple crushing devices, extrusion devices, filtering devices and detection devices are required, which is time-consuming, labor-intensive and wasteful of resources, and leads to low efficiency in detecting pesticide residues in agricultural and food products. Therefore, it is very necessary to create a pesticide residue detection system that can detect multiple different types of agricultural and food products at the same time. Summary of the invention

[0004] In view of this, the utility model provides a system for detecting pesticide residues in agricultural and food products to solve the technical problems in the prior art that multiple devices need to be prepared and used when obtaining the detection solution, resulting in a cumbersome and inefficient sampling process.

[0005] To achieve the above objectives, this application adopts the following scheme:

[0006] A system for detecting pesticide residues in agricultural and food products, comprising a support frame, a plurality of integrated sampling devices, and a plurality of pesticide detection devices, wherein the support frame comprises a fixed portion, a retractable portion, and a placement plate, wherein the upper end of the fixed portion is connected to the lower end of the retractable portion, and the placement plate is arranged at the lower end of the fixed portion; the integrated sampling device comprises a crushing assembly, an extrusion filtering assembly, and a collecting and draining assembly, wherein the retractable portion is connected to the side wall of the crushing assembly, the extrusion filtering assembly is arranged at the upper end of the fixed portion, the extrusion filtering assembly is located directly below the crushing assembly, and the outer diameter of the crushing assembly is smaller than the inner diameter of the extrusion filtering assembly, the collecting and draining assembly is detachably connected to the bottom of the extrusion filtering assembly, the crushing assembly can be raised and lowered between a first position and a second position, and the bottom of the crushing assembly is an openable and closable structure facing the extrusion filtering assembly; the pesticide detection device is placed on the placement plate, the number of the pesticide detection devices is the same as that of the integrated sampling device, and the pesticide detection device is located directly below the integrated sampling device.

[0007] Preferably, a clamping piece is provided at the lower end of the fixing portion, and the placement plate is detachably clamped to the clamping piece.

[0008] Preferably, a plurality of positioning grooves are provided on the placement plate, the number of the positioning grooves is the same as the number of the detection devices, and the pesticide detection devices are positioned and matched with the positioning grooves, and the positioning grooves are located directly below the integrated sampling device.

[0009] Preferably, a fastener is provided on the placement plate, and the fastener is used to fasten the pesticide detection device.

[0010] Preferably, the crushing assembly includes a crushing barrel, an upper cover and a rotating rod, the crushing barrel is detachably connected to the upper cover, a first rotating drive part is provided in the upper cover, one end of the rotating rod is drivingly connected to the rotating drive part, and a crushing blade is provided on the rotating rod.

[0011] Preferably, the openable and closable structure includes a second rotating drive unit and an opening and closing plate, the second rotating drive unit is arranged on the bottom end side of the crushing barrel, the opening and closing plate is connected to the power output shaft of the second rotating drive unit, and the second rotating drive unit drives the opening and closing plate to rotate between a third position and a fourth position. In the third position, the opening and closing plate covers and seals the bottom end of the crushing barrel, and in the fourth position, the opening and closing plate avoids the bottom end of the crushing barrel.

[0012] Preferably, the retractable part includes a third rotating drive part, a fixed plate and a screw rod, the drive motor is arranged at the upper end of the fixed part, the fixed plate is arranged on the side wall of the crushing assembly, and the screw rod is connected to the drive motor and threadedly cooperates with the fixed plate.

[0013] Preferably, the extrusion filtering assembly comprises an extrusion cylinder, which is located below the crushing assembly and fixedly connected to the upper end of the fixing portion, and the bottom of the extrusion cylinder is arranged as a filter screen.

[0014] Preferably, the collection and drainage assembly comprises a funnel and a metering dropper, the inlet end of the funnel is detachably connected to the bottom of the extrusion and filtration assembly, and the outlet end of the funnel is connected to the inlet end of the metering dropper.

[0015] The technical solution adopted in this application can achieve the following beneficial effects:

[0016] The present application provides a system for detecting pesticide residues in agricultural and food products, including a support frame, a plurality of integrated sampling devices, and a plurality of pesticide detection devices. The integrated sampling device includes a crushing component, an extrusion and filtering component, and a collection and drainage component. The crushing component can crush agricultural and food products, and an adjustable part can adjust the crushing component to move downward. The bottom of the crushing component can be close to the bottom of the extrusion and filtering component, and there is a mutual extrusion force, so that the crushed objects in the extrusion and filtering component can be squeezed out of juice, and the juice can be filtered through the extrusion and filtering component into the collection and drainage component. The detection solution in the collection and drainage component can be dripped into the pesticide detection device for detecting pesticide residues. Compared with the prior art in which agricultural and food products are first sampled by a crushing device, then squeezed by an extrusion device, and finally filtered by a filtering device to obtain a detection solution, the advantage of using this device to detect pesticide residues in agricultural and food products is that it can simultaneously detect a variety of different types of agricultural and food products. Compared with the prior art, the system for detecting pesticide residues in agricultural and food products provided by the present application does not require the use of multiple separate devices with different functions when conducting pesticide detection on agricultural and food products. This not only saves resources but also saves time. It is simple and convenient while also improving the detection efficiency of agricultural and food products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the support frame in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the integrated sampling device in the utility model.

[0020] Figure 4 It is an enlarged view of the crushing component in the utility model.

[0021] Figure 5 It is an enlarged view of the extrusion filter component and the collection and drainage component in the utility model.

[0022] In the figure, a support frame 1, a fixed part 11, a retractable part 12, a placement plate 13, an integrated sampling device 2, a crushing component 21, an extrusion and filtering component 22, a collection and drainage component 23, a pesticide detection device 3, a clamping part 111, a positioning groove 131, a fastener 132, a crushing barrel 211, an upper cover 212, a rotating rod 213, a first rotating drive part 2121, a crushing blade 2131, an opening and closing plate 214, a second rotating drive part 2141, a third rotating drive part 121, a fixed plate 122, a screw 123, an extrusion barrel 221, a filter screen 222, a funnel 231, and a metering dropper 232. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below in conjunction with the accompanying drawings. And the preferred implementation of the present application is given. However, the present application can be implemented in many different forms and is not limited to the implementation described herein. On the contrary, the purpose of providing these implementations is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Please see Figures 1 to 5 The following embodiments are provided to illustrate a system for detecting pesticide residues in agricultural and food products, comprising a support frame 1, a plurality of integrated sampling devices 2, and a plurality of pesticide detection devices 3, wherein:

[0026] The support frame 1 is a bilaterally symmetrical structure, and the support frame 1 includes a fixed portion 11, a retractable portion 12 and a placement plate 13. The upper end of the fixed portion 11 is connected to the lower end of the retractable portion 12, and the placement plate 13 is horizontally connected to the lower end of the fixed portion 11; the integrated sampling device 2 includes a crushing component 21, an extrusion and filtering component 22 and a collection and drainage component 23. The retractable portion 12 is connected to the side wall of the crushing component 21, the extrusion and filtering component 22 is arranged at the upper end of the fixed portion 11, and the extrusion and filtering component 22 is arranged at the upper end of the fixed portion 11. 22 is located directly below the crushing component 21, and the outer diameter of the crushing component 21 is smaller than the inner diameter of the extrusion and filtering component 22. The collecting and draining component 23 is detachably connected to the bottom of the extrusion and filtering component 22. The crushing component 21 can be raised and lowered between a first position and a second position. The bottom of the crushing component 21 is an openable and closable structure facing the extrusion and filtering component 22. When the bottom of the crushing component 21 is opened, the crushed agricultural and food products can fall into the extrusion and filtering component 22, and then the bottom of the crushing component 21 is closed. Finally, the retractable portion 12 drives the crushing component 21 to move from the first position to the second position. During this process, the bottom of the crushing component 21 is close to the bottom of the squeezing and filtering component 22, and there is a squeezing force between the two, so that the crushed materials in the squeezing and filtering component 22 are squeezed and filtered, and the filtered juice is collected in the collection and drainage component 23; the pesticide detection device 3 is placed on the placement plate 13, and the number of the pesticide detection device 3 and the integrated sampling device 2 is the same, and the pesticide detection device 3 is located directly below the integrated sampling device 2.

[0027] Specifically, the support frame 1, the integrated sampling device 2, and the pesticide detection device 3 are sequentially connected according to the manufacturing process. The integrated sampling device 2 is used to obtain the detection solution of the agricultural and food products, and the pesticide detection device 3 is used to detect the pesticide residues of the agricultural and food products. The height and length of the support frame 1 can be formulated according to actual conditions. The length of the placement plate 13 is not less than the length of the support frame 1. In this embodiment, the number of the integrated sampling device 2 and the pesticide detection device 3 is set to 4, and 4 different agricultural and food products can be detected at the same time. The cross-section of the integrated sampling device 2 can be other polygons such as rectangles and circles. In this embodiment, a cylindrical structure is preferably used. Among them, the outer diameter of the crushing component 21 is smaller than the inner diameter of the extrusion and filtering component 22, so that the crushing component 21 can extend into the extrusion and filtering component 22. When the crushing component 21 is in the first position, it can crush the agricultural and food products. After crushing, since the bottom of the crushing component 21 is set as an open and close structure, when the bottom of the crushing component 21 is opened, the crushed agricultural and food products can fall into the extrusion and filtering component 22, and then the bottom of the crushing component 21 is closed. Next, the retractable portion 12 drives the crushing component 21 to move from the first position to the second position. During this process, the bottom of the crushing component 21 is close to the bottom of the squeezing and filtering component, and there is a squeezing force between the two, so that the crushed objects in the squeezing and filtering component 22 are squeezed and filtered, and the filtered juice is collected in the collection and drainage component 23. Finally, the detection solution in the collection and drainage component 23 can be dripped onto the pesticide detection device 3, and the pesticide detection device 3 detects the pesticide residues in the agricultural and food products.

[0028] When in use, firstly, fruits, vegetables and other agricultural and food products are crushed, including: the first step, when the crushing component 21 is in the first position, fruits, vegetables and other agricultural and food products are placed in the crushing component 21 and crushed to the desired degree; the second step, the bottom of the crushing component 21 is opened, and the crushed objects in the crushing component 21 fall into the corresponding extrusion and filtering component 22; the third step, the bottom of the crushing component 21 is closed. Next, the crushed objects are squeezed to extract juice: the retractable part 12 drives the crushing component 21 to move downward, and the crushing component 21 enters the corresponding extrusion and filtering component 22. When the bottom of the crushing component 21 approaches the bottom of the extrusion and filtering component 22, the crushed objects in the extrusion and filtering component 22 are squeezed and filtered, and the filtered juice of fruits and vegetables is collected in the collection and drainage component 23. Finally, pesticide detection is performed: the pesticide detection device 3 is arranged directly below the collecting and drainage component 23, and the detection solution in the collecting and drainage component 23 is dripped onto the corresponding pesticide detection device 3. Each pesticide detection device 3 detects the pesticide content of different types of agricultural and food products respectively.

[0029] The advantage of using this device to detect pesticide residues in agricultural and food products is that it can detect multiple different types of agricultural and food products at the same time. Compared with the prior art, the system for detecting pesticide residues in agricultural and food products provided by this application does not require the use of multiple separate devices with different functions when conducting pesticide detection in agricultural and food products. This not only saves resources but also saves time. It is simple and convenient, and can also improve the detection efficiency of agricultural and food products.

[0030] In order to facilitate reading of data on the pesticide detection device 3 on the one hand, and to facilitate cleaning of the integrated sampling device 2 on the other hand, in this embodiment, a snap-in 111 is provided at the lower end of the fixing portion 11, and the placement plate 13 is detachably snap-connected to the snap-in 111.

[0031] Specifically, a clamping piece 111 is disposed at the lower ends of two adjacent fixing portions, and the placement plate 13 can be placed horizontally on the clamping piece 111 .

[0032] When it is necessary to read the data on the pesticide detection device 3 or to clean the integrated sampling device 2 after use, the placement plate 13 can be removed, the pesticide detection device 3 can be taken out to read the data, and then the opening and closing plate of the crushing barrel can be opened to rinse from top to bottom, which further improves the ease of use.

[0033] In order to make the detection solution in the collection and drainage component 23 drip onto the pesticide detection device 3 more accurately, in some specific embodiments, a plurality of positioning grooves 131 are provided on the placement plate 13, the number of the positioning grooves 131 is the same as the number of the detection devices, and the pesticide detection device 3 is positioned and matched with the positioning grooves 131, and the positioning grooves 131 are located directly below the integrated sampling device 2.

[0034] The length and width of the positioning groove 131 are slightly larger than the length and width of the pesticide detection device 3. Preferably, the height ratio of the positioning groove 131 to the pesticide detection device 3 is 1:3 to 1:5. When the pesticide detection device 3 is placed on the placement plate 13, a portion of the lower end of the pesticide detection device 3 is embedded in the positioning groove 131, and the detection port of the pesticide detection device 3 in the positioning groove 131 can receive the detection solution in the collection and drainage component 23.

[0035] The advantage of such a setting is that it can prevent the detection solution from dripping outside, thereby improving the accuracy of the detection result.

[0036] Considering that the crushing assembly 21 will vibrate slightly when crushing agricultural and food products, thereby affecting the movement of the position of the pesticide detection device 3, in some preferred embodiments, a fastener 132 is provided on the placement plate 13, and the fastener 132 is used to fasten the pesticide detection device 3. The fastener 132 can be a clamp, a block, a rubber ring, etc. In this embodiment, the fastener 132 is preferably an elastic block. Specifically, the number of the elastic blocks is two, and the two elastic blocks are arranged on the placement plate 13, and the opposite parts of the two elastic blocks protrude from the positioning groove 131 and cover the positioning groove 131. When in use, first, the two elastic card blocks are pushed outward toward both sides of the positioning groove 131, and the pesticide detection device 3 is placed in the positioning groove 131. The two elastic card blocks are respectively stuck on the side walls of the pesticide detection device 3, and the pesticide detection device 3 can be fastened in the positioning groove 131; when the pesticide detection device 3 needs to be taken out of the positioning groove 13, first, the two elastic card blocks are pushed outward from both side walls of the pesticide detection device 3 to take out the pesticide detection device 3.

[0037] The advantage of such a configuration is that even if the crushing component 21 produces slight vibration when crushing agricultural and food products, the position of the pesticide detection device 3 will not be shifted due to the fasteners 132 provided on the placement plate, so that the detection solution in the collection and drainage component 23 can be accurately dripped onto the pesticide detection device 3.

[0038] In order to crush agricultural and food products, in some specific embodiments, the crushing assembly 21 includes a crushing barrel 211, an upper cover 212 and a rotating rod 213. The crushing barrel 211 is detachably connected to the upper cover 212. A first rotating drive part 2121 is provided in the upper cover 212. One end of the rotating rod 213 is drivingly connected to the rotating drive part. A crushing blade 2131 is provided on the rotating rod 213.

[0039] Specifically, the edge of the upper cover 212 has a downward protrusion, and the surface of the protrusion has a thread made of flexible material. When the upper cover 212 is covered on the crushing barrel 211, the protrusion fits tightly against the inner wall of the crushing barrel 211.

[0040] The first rotation driving unit 2121 is used to drive the crushing blade 2131 to rotate and crush the agricultural and food products in the crushing cylinder 211.

[0041] In some preferred embodiments, the openable and closable structure includes a second rotating drive unit 2141 and an opening and closing plate 214, the second rotating drive unit 2141 is arranged on the bottom end side of the crushing barrel 211, the opening and closing plate 214 is connected to the power output shaft of the second rotating drive unit 2141, and the second rotating drive unit 2141 drives the opening and closing plate 214 to rotate between a third position and a fourth position. In the third position, the opening and closing plate 214 covers and seals the bottom end of the crushing barrel 211, and in the fourth position, the opening and closing plate 214 avoids the bottom end of the crushing barrel 211.

[0042] Among them, the second rotating drive part 2141 is used to drive the opening and closing plate 214 to open and close. When the opening and closing plate 214 is in the third position, that is, when the crushing component 21 is crushing agricultural and food products or the crushed objects in the crushing component 21 fall into the extrusion and filtering component 22, the opening and closing plate 214 is closed; when the opening and closing plate 214 is in the fourth position, that is, after the crushing component 21 crushes agricultural and food products, the opening and closing plate 214 is opened, and the crushed objects in the crushing component 21 fall into the extrusion and filtering component 22.

[0043] The advantage of such a configuration is that it is not necessary to transfer the crushed objects in the crushing assembly 21 to the extrusion and filtering assembly 22 for extrusion, which further improves efficiency and is more convenient. Furthermore, the number of the openable and closable structures is two, and the two openable and closable structures are symmetrically arranged on both sides of the crushing barrel 211, and the two opening and closing structures are opened and closed synchronously. When the two opening and closing plates 214 are both located at the third position, the two opening and closing plates 214 are spliced ​​to cover and seal the bottom end of the crushing barrel 211.

[0044] To prevent the opening and closing plate 214 from tilting upward when the crushing assembly 21 is in the second position, in some preferred embodiments, a rotation-stopping boss is provided at the lower end of the inner wall of the crushing barrel 211, and the rotation-stopping boss has an inclined surface, and in the direction from the upper end of the crushing barrel 211 to the lower end thereof, the inclined surface extends obliquely from the inner wall of the crushing barrel 211 toward the center of the crushing barrel 211, and the angle between the inclined surface and the inner wall of the crushing barrel 211 is 20° to 40°.

[0045] After the crushing barrel 211 crushes the agricultural and food products, the bottom of the crushing barrel 211 opens so that the crushed products fall into the extrusion and filtering assembly 22. After the crushed products fall, the bottom of the crushing barrel 211 closes. Next, the telescopic part 12 adjusts the crushing barrel 211 to move downward. There is a certain extrusion force between the bottom of the crushing barrel 211 and the bottom of the extrusion and filtering assembly 22, so the crushed products can be squeezed. Since the bottom of the crushing barrel 211 is composed of two parts, in this process, considering that during extrusion, the middle part of the bottom surface of the crushing barrel 211 will slightly tilt upward, resulting in insufficient extrusion, a rotation-stopping boss is provided on the inner wall of the crushing barrel 211 to limit the upward tilting of the bottom surface of the crushing barrel 211 after being subjected to force.

[0046] In order to adjust the up and down movement of the crushing assembly 21. In this embodiment, the telescopic part 12 includes a third rotation driving part 121, a fixing plate 122 and a screw rod 123, the driving motor is arranged at the upper end of the fixing part 11, the fixing plate 122 is arranged on the side wall of the crushing assembly 21, and the screw rod 123 is connected to the driving motor and is threadedly matched with the fixing plate 122.

[0047] There are two retractable parts 12, which are symmetrically arranged on both sides of the side wall of the crushing cylinder 211. The screw rod 123 and the fixing plate 122 are used in threaded cooperation, and the third rotation driving part 121 drives the screw rod 123 to rotate, adjusting the crushing assembly 21 to the first position and the second position.

[0048] In order to solve the problem in the prior art that the crushed object is squeezed by a separate squeezing device, which is too cumbersome, in this embodiment, the squeezing and filtering assembly 22 includes an squeezing cylinder 221, which is located below the crushing assembly 21 and fixedly connected to the upper end of the fixing portion 11, and the bottom of the squeezing cylinder 221 is set as a filter net 222.

[0049] The cross-section of the extrusion cylinder 221 can be circular or rectangular, but it must correspond to the shape of the crushing component 21. In the present embodiment, it is preferred that the extrusion cylinder 221 is cylindrical, and the inner diameter of the extrusion cylinder 221 is larger than the outer diameter of the crushing component 21. The mesh size of the filter screen 222 is the minimum specification, which can be selected according to actual conditions. Furthermore, the filter screen 222 can also be configured as a detachable structure, and filters of different specifications can be selected for replacement according to actual conditions.

[0050] The filter net 222 can cooperate with the bottom of the crushing component 21 to squeeze the crushed objects, and during the squeezing process, the filter net 222 can also filter the juice of the agricultural and food products and collect it into the drainage component.

[0051] In some preferred embodiments, the collection and drainage component 23 includes a funnel 231 and a metering dropper 232, the inlet end of the funnel 231 is detachably connected to the bottom of the extrusion filter component 22, and the outlet end of the funnel 231 is connected to the inlet end of the metering dropper 232.

[0052] Specifically, the diameter of the inlet end of the funnel 231 is preferably larger than the outer diameter of the extrusion filter assembly 22, and the shapes are preferably the same. In this way, the agricultural and food product juice in the extrusion filter assembly 22 can be completely collected. In order to facilitate the subsequent use of the juice for pesticide residue detection, a metering dropper 232 is provided on the outlet end of the funnel 231.

[0053] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present invention, and these modifications or substitutions should be included in the protection scope of the present invention.

Claims

1. A system for detecting pesticide residues in agricultural and food products, characterized in that: include A support frame, the support frame comprising a fixed portion, a retractable portion and a placement plate, the upper end of the fixed portion is connected to the lower end of the retractable portion, and the placement plate is arranged at the lower end of the fixed portion; A plurality of integrated sampling devices, wherein the integrated sampling devices include a crushing component, an extrusion filter component and a collection and drainage component, wherein the retractable portion is connected to the side wall of the crushing component, the extrusion filter component is arranged at the upper end of the fixed portion, the extrusion filter component is located directly below the crushing component, and the outer diameter of the crushing component is smaller than the inner diameter of the extrusion filter component, the collection and drainage component is detachably connected to the bottom of the extrusion filter component, the crushing component can be raised and lowered between a first position and a second position, the bottom of the crushing component is an openable and closable structure facing the extrusion filter component, and, A plurality of pesticide detection devices are placed on the placement plate, the number of the pesticide detection devices is the same as the number of the integrated sampling devices, and the pesticide detection devices are located directly below the integrated sampling devices.

2. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: A clamping piece is arranged at the lower end of the fixing portion, and the placing plate is detachably clamped with the clamping piece.

3. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: The placement plate is provided with a plurality of positioning grooves, the number of which is the same as the number of the detection devices, and the pesticide detection devices are positioned and matched with the positioning grooves, and the positioning grooves are located directly below the integrated sampling device.

4. The system for detecting pesticide residues in agricultural and food products according to claim 3, characterized in that: The placement plate is provided with a fastener, and the fastener is used to fasten the pesticide detection device.

5. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: The crushing assembly includes a crushing barrel, an upper cover and a rotating rod. The crushing barrel is detachably connected to the upper cover. A first rotating drive unit is arranged in the upper cover. One end of the rotating rod is drivingly connected to the rotating drive unit. A crushing blade is arranged on the rotating rod.

6. The system for detecting pesticide residues in agricultural and food products according to claim 5, characterized in that: The openable and closable structure includes a second rotating drive unit and an opening and closing plate, wherein the second rotating drive unit is arranged at the bottom end side of the crushing barrel, and the opening and closing plate is connected to the power output shaft of the second rotating drive unit. The second rotating drive unit drives the opening and closing plate to rotate between a third position and a fourth position. In the third position, the opening and closing plate covers and seals the bottom end of the crushing barrel, and in the fourth position, the opening and closing plate avoids the bottom end of the crushing barrel.

7. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: The retractable part includes a third rotation driving part, a fixed plate and a screw rod, the third rotation driving part is arranged at the upper end of the fixed part, the fixed plate is arranged on the side wall of the crushing assembly, and the screw rod is connected to the third rotation driving part and is threadedly matched with the fixed plate.

8. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: The extrusion filtering assembly comprises an extrusion cylinder, which is located below the crushing assembly and fixedly connected to the upper end of the fixing portion, and a filter screen is arranged at the bottom of the extrusion cylinder.

9. The system for detecting pesticide residues in agricultural and food products according to claim 1, characterized in that: The collecting and draining component comprises a funnel and a metering dropper, the inlet end of the funnel is detachably connected to the bottom of the extrusion and filtering component, and the outlet end of the funnel is connected to the inlet end of the metering dropper.

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