Sampling device for detecting pesticide residues in agricultural products

Abstract

The utility model discloses a sampling device for detecting pesticide residues in agricultural products, and belongs to the technical field of pesticide detection sampling, the technical scheme is as follows: the sampling device comprises a shell frame, and a control display is arranged at the top of the shell frame. For agricultural products with irregular shapes, such as bent cucumbers, strawberries with uneven surfaces and the like, the storage net box provides a relatively containing space, the agricultural products can be placed in the storage net box and do not need to be accurately clamped by a clamping plate, the situation that the agricultural products deviate or slide down due to the fact that the clamping plate cannot adapt to the shape is avoided, smooth sampling operation is guaranteed, and the sampling efficiency is improved. When the agricultural products are too small and too thin, like small cherry tomatoes or long and thin beans, the storage net box can completely contain the agricultural products, the situation that the agricultural products cannot be clamped is avoided, damage to the agricultural products in the clamping process can be prevented, and therefore follow-up washing and soaking use is guaranteed.

Description

Technical Field

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

[0002] Pesticide residue is the phenomenon that some pesticides remain directly or indirectly in grains, vegetables, fruits, livestock products, aquatic products, soil and water after pesticides are applied in agricultural production. Part of the pesticides applied to crops adhere to the crops, and part is scattered in the soil, atmosphere, water and other environments. Some of the pesticides remaining in the environment will be absorbed by plants. Residual pesticides directly reach humans and livestock through plant fruits, water, and atmosphere, or are ultimately passed to humans and livestock through the environment and food chain, causing certain harm. Therefore, it is necessary to detect pesticide residues in agricultural products to ensure food safety.

[0003] Most of the existing sampling devices for detecting pesticide residues in agricultural products have low sampling efficiency and long sampling time. They cannot quickly sample and send for inspection, are cumbersome to operate, and are inconvenient to use. In addition, they cannot automatically clamp fixed samples during sampling, and require staff to assist in taking samples for a long time, which increases the risk of staff being contaminated by pesticides and has low safety.

[0004] The existing patent (Announcement No.: CN214538596U) discloses a sampling device for detecting pesticide residues in agricultural products. This utility model automatically completes the sampling process through electric control, improves sampling efficiency, shortens sampling time, uses a liquid inlet pipe and a nozzle to rinse the sample, and a sampling tank to soak the sample, and automatically discharges the liquid after rinsing and soaking, and then takes samples for inspection. The semi-automatic control process is simple to operate and easy to use.

[0005] In view of the above problems, existing patents have provided solutions, but the clamping device used for automatically clamping samples in the above patents has certain limitations. For example, for agricultural products with irregular shapes, such as curved cucumbers, strawberries with uneven surfaces, etc., since the movement mode of the clamp is relatively fixed, it is not possible to adapt well to the shape of the agricultural products, resulting in the agricultural products being easily offset or slipping during the clamping process, affecting the smooth progress of the sampling operation. In addition, when the agricultural products are too small and thin, such as small-grained cherry tomatoes or slender beans, the clamp may not be able to accurately clamp these agricultural products, or it may easily cause damage to the agricultural products during the clamping process, affecting the accuracy of the test results. At the same time, the liquid after rinsing and soaking cannot be directly collected and processed, so that additional containers need to be prepared to collect the liquid discharged from the liquid outlet tube, and then transfer and send for inspection, etc., thereby increasing the operation steps and time, affecting the user experience.

[0006] Therefore, a sampling device for detecting pesticide residues in agricultural products is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a sampling device for detecting pesticide residues in agricultural products, which can solve certain limitations of the clamping device for automatically clamping samples in the above-mentioned patent. For example, for agricultural products with irregular shapes, such as curved cucumbers, strawberries with uneven surfaces, etc., since the movement mode of the clamping plate is relatively fixed, it is unable to adapt well to the shape of the agricultural products, resulting in the agricultural products being easily offset or slipping during the clamping process, affecting the smooth progress of the sampling operation. In addition, when the agricultural products are too small and thin, such as small-grained cherry tomatoes or slender beans, the clamping plate may not be able to accurately clamp these agricultural products, or it may easily cause damage to the agricultural products during the clamping process, affecting the accuracy of the test results. At the same time, the liquid after rinsing and soaking cannot be directly collected and processed, so that an additional container needs to be prepared to collect the liquid discharged from the liquid outlet pipe, and then transfer and send for inspection, etc., thereby increasing the operation steps and time, affecting the user experience.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sampling device for detecting pesticide residues in agricultural products, comprising a housing frame, a control display is arranged on the top of the housing frame, a sampling tank is bolted in the middle of the housing frame, a placing mechanism is arranged on the bottom side of the housing frame, a flushing structure is arranged inside the sampling tank, and a collecting mechanism is arranged at the bottom of the sampling tank;

[0009] The placing mechanism comprises an electric push rod bolted to the top of the shell frame, the telescopic end of the electric push rod is bolted to an outer net frame, a net box for placing objects is arranged inside the outer net frame, and a sealing net is rotatably connected to the front side of the net box for placing objects.

[0010] Preferably, the collecting mechanism comprises a lower tube connected to the bottom of the sampling tank, the right side of the lower tube is connected to a first solenoid valve, and the right side of the first solenoid valve is connected to a first curved pipe.

[0011] Preferably, the bottom of the first curved pipe is connected to a first box frame, and the first box frame is bolted to the bottom side of the shell frame.

[0012] Preferably, a liquid collecting box is slidably connected to the interior of the first box frame, the liquid collecting box is located at the bottom of the first curved pipe, and a waste liquid collecting structure is provided on the left side of the lower pipe.

[0013] Preferably, the waste liquid collection structure includes a second solenoid valve connected to the left side of the lower tube, and the left side of the second solenoid valve is connected to a second curved pipe.

[0014] Preferably, the bottom of the second curved pipe is connected to a second box frame, the second box frame is bolted to the bottom side of the shell frame, and the interior of the second box frame is slidably connected to a waste liquid collection box.

[0015] Preferably, the flushing structure comprises a flushing tube embedded in the sampling tank, and a flushing hole is formed on the inner side of the flushing tube.

[0016] Preferably, the top of the flushing pipe is connected to a water inlet pipe, and the rear side of the water inlet pipe is connected to a water inlet valve.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The present application solves the problem of difficulty in clamping irregular and small-sized agricultural products by setting a placement mechanism. For irregularly shaped agricultural products, such as curved cucumbers, strawberries with uneven surfaces, etc., the placement net box provides a relatively inclusive space in which agricultural products can be placed without the need for precise clamping of the clamping plate, thereby avoiding the deviation or slipping of agricultural products caused by the inability of the clamping plate to adapt to the shape, and ensuring the smooth progress of the sampling operation. When the agricultural products are too small and thin, such as small-grained cherry tomatoes or slender beans, the placement net box can completely accommodate these agricultural products, and there will be no situation where they cannot be clamped, and the agricultural products can be prevented from being damaged during the clamping process, thereby ensuring subsequent rinsing and soaking. At the same time, the outer net frame is connected to the electric push rod, and the placement net box containing agricultural products can be conveniently sent into the sampling tank for rinsing and soaking operations, thereby improving the convenience and reliability of the entire sampling process;

[0019] 2. The present application realizes the direct collection and treatment of the liquid after rinsing and soaking by setting up a flushing structure and a collecting mechanism. The flushing structure can ensure comprehensive and effective flushing of agricultural products, so that the pesticide residues are more fully dissolved in the flushing liquid. The collecting mechanism is located at the bottom of the sampling tank, and can directly collect the liquid after flushing and soaking. There is no need to prepare additional containers for transfer, which reduces the operation steps and time, avoids the risks of liquid spillage and sample contamination caused by the transfer process, greatly improves work efficiency, enhances the user experience, and makes the function of the entire sampling device more complete and practical. It is especially suitable for large-scale agricultural product pesticide residue detection. In addition, when the sampling tank is used to flush and soak agricultural products for cleaning, the collecting mechanism can collect and treat its cleaning wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural diagram of the sampling device for detecting pesticide residues in agricultural products of the utility model;

[0021] Figure 2 This is a structural diagram of the shell frame of the utility model;

[0022] Figure 3 It is a structural diagram of the placement mechanism of the utility model;

[0023] Figure 4It is a structural diagram of the collection mechanism of the utility model;

[0024] Figure 5 This is a structural diagram of the waste liquid collection structure of the utility model;

[0025] Figure 6 It is the structural diagram of the flushing structure of the utility model.

[0026] In the figure, 1, shell frame; 2, control display; 3, sampling tank; 4, placement mechanism; 401, electric push rod; 402, outer net frame; 403, net box for placing objects; 404, net sealing; 5, flushing structure; 501, flushing pipe; 502, water inlet pipe; 503, water inlet valve; 6, collecting mechanism; 601, lower pipe; 602, first solenoid valve; 603, first elbow; 604, first box rack; 605, liquid collection box; 606, waste liquid collection structure; 6061, second solenoid valve; 6062, second elbow; 6063, second box rack; 6064, waste liquid collection box. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 , the utility model provides a technical solution:

[0029] A sampling device for detecting pesticide residues in agricultural products, comprising a frame 1, a control display 2 is arranged on the top of the frame 1, a sampling tank 3 is bolted in the middle of the frame 1, a placing mechanism 4 is arranged on the bottom side of the frame 1, a flushing structure 5 is arranged inside the sampling tank 3, and a collecting mechanism 6 is arranged at the bottom of the sampling tank 3;

[0030] The placing mechanism 4 comprises an electric push rod 401 bolted to the top of the shell frame 1, the telescopic end of the electric push rod 401 is bolted to an outer net frame 402, an object placing net box 403 is arranged inside the outer net frame 402, and the front side of the object placing net box 403 is rotatably connected to a sealing net 404.

[0031] In this embodiment: by setting a placing mechanism 4 and a collecting mechanism 6, when it is necessary to place agricultural products for sampling, the agricultural products are first placed in the placing net box 403, and then the sealing net 404 is rotated to close it to prevent the agricultural products from falling during subsequent operations. Next, the placing net box 403 is placed inside the outer net frame 402, and then the electric push rod 401 is started by controlling the display 2. The electric push rod 401 pushes the outer net frame 402 to carry the placing net box 403 and the agricultural products to the inside of the sampling tank 3, ready for the next step of rinsing and soaking. During the whole process, the placing net box 403 provides a stable placing environment for irregular and small-sized agricultural products, and the outer net frame 402 supports and fixes the placing net box 403, ensuring that the agricultural products can be safely and accurately delivered to the sampling tank 3. When the placing net box 403 reaches the designated position above the sampling tank 3, After the rinsing structure 5 is in position, the flushing structure 5 starts to work and transports the flushing liquid to the sampling tank 3. The nozzles are set at a certain angle and distribution method, and are evenly sprayed on the agricultural products in the storage net box 403. During the flushing process, the mesh structure of the storage net box 403 allows the flushing liquid to fully contact the agricultural products while being discharged in time, ensuring the circulation and renewal of the flushing liquid and improving the flushing efficiency. During the soaking process, the agricultural products remain in a stable state in the storage net box 403, ensuring that the pesticide residues are fully dissolved in the soaking liquid, providing good sample conditions for subsequent accurate detection. After flushing and soaking, the collecting mechanism 6 at the bottom of the sampling tank 3 collects the liquid after flushing and soaking, and then takes out the structure for storing the liquid for inspection. Later, when the sampling tank 3 is cleaned after being used to flush and soak the agricultural products, the collecting mechanism 6 can collect and treat its cleaning waste water again.

[0032] Specifically, Figure 4 As shown, the collecting mechanism 6 includes a lower tube 601 connected to the bottom of the sampling tank 3 , the right side of the lower tube 601 is connected to a first electromagnetic valve 602 , and the right side of the first electromagnetic valve 602 is connected to a first curved tube 603 .

[0033] Specifically, Figure 4 As shown, the bottom of the first curved pipe 603 is connected to the first box frame 604 , and the first box frame 604 is bolted to the bottom side of the shell frame 1 .

[0034] Specifically, Figure 4 As shown, a liquid collecting box 605 is slidably connected inside the first box frame 604 , and the liquid collecting box 605 is located at the bottom of the first curved pipe 603 . A waste liquid collecting structure 606 is provided on the left side of the lower pipe 601 .

[0035] In this embodiment: by setting up the collecting mechanism 6, the lower tube 601 at the bottom of the sampling tank 3 is connected with the first solenoid valve 602 and the first curved pipe 603, so that the rinsing and soaking liquid containing pesticide residues can be accurately drained to the liquid collecting box 605 in the first box rack 604. This direct collection method avoids the loss and contamination of the liquid during the transfer process, ensures the integrity and accuracy of the sample, and is beneficial to the subsequent detection and analysis of pesticide residues. At the same time, the first box rack 604 provides a stable placement position for the liquid collecting box 605, and the sliding connection design between the liquid collecting box 605 and the first box rack 604 facilitates the removal and inspection operations after the liquid is collected, thereby improving the work efficiency of the entire sampling process. In addition, the waste liquid collection structure 606 arranged on the left side of the lower tube 601 enables the waste water generated during the cleaning of the sampling tank 3 to be collected separately, which not only facilitates the centralized treatment of the waste liquid and reduces the pollution of the waste liquid to the environment, but also ensures the accuracy of the subsequent rinsing and soaking of agricultural products, and ensures the standardization and scientificity of the detection work.

[0036] Specifically, Figure 5 As shown, the waste liquid collection structure 606 includes a second solenoid valve 6061 connected to the left side of the lower tube 601 , and the left side of the second solenoid valve 6061 is connected to a second curved pipe 6062 .

[0037] Specifically, Figure 5 As shown, the bottom of the second curved pipe 6062 is connected to the second box frame 6063, the second box frame 6063 is bolted to the bottom side of the shell frame 1, and the interior of the second box frame 6063 is slidably connected to a waste liquid collection box 6064.

[0038] In this embodiment: the second solenoid valve 6061 in the waste liquid collection structure 606 plays a role in accurately controlling the flow direction of the waste liquid. When the sampling tank 3 is cleaned, the waste water can be accurately guided to the waste liquid collection box 6064 by controlling the opening and closing of the second solenoid valve 6061. The design of the second elbow 6062 reasonably changes the flow direction of the waste liquid, so that it can smoothly flow into the waste liquid collection box 6064 located in the second box rack 6063. The second box rack 6063 provides stable support and positioning for the waste liquid collection box 6064, ensuring the safety and order of the waste liquid collection process. This structural design realizes the effective management of waste liquid, prevents leakage or overflow of waste liquid, and ensures the cleanliness and safety of the working environment.

[0039] Specifically, Figure 6 As shown, the flushing structure 5 includes a flushing tube 501 embedded in the sampling tank 3 , and a flushing hole is opened on the inner side of the flushing tube 501 .

[0040] Specifically, Figure 6 As shown, the top of the flushing pipe 501 is connected to a water inlet pipe 502 , and the rear side of the water inlet pipe 502 is connected to a water inlet valve 503 .

[0041] In this embodiment: the flushing pipe 501 in the flushing structure 5 is embedded in the sampling tank 3, and a flushing hole is opened on the inner side. This design allows the flushing liquid to be evenly sprayed on the agricultural products in the storage net box 403. The distribution and size of the flushing holes can be optimized as needed to ensure that no matter how the agricultural products are positioned in the net box, they can be fully flushed. For agricultural products with irregular shapes and small sizes, multi-angle flushing liquid spraying can effectively remove pesticide residues on their surfaces and gaps, thereby improving the thoroughness and reliability of flushing. In this process, the water inlet pipe 502 connected to the top of the flushing pipe 501 and the water inlet valve 503 on the rear side facilitate the input control of the flushing liquid. The operator can flexibly adjust the opening of the water inlet valve 503 and the flushing time according to the characteristics of different agricultural products and the pesticide residue situation to achieve the best flushing effect.

[0042] Working principle: When using the sampling device for detecting pesticide residues in agricultural products, first put the agricultural products to be detected into the placing net box 403. Due to the mesh structure of the placing net box 403, even agricultural products with irregular shapes or too small or too thin can be placed stably. Then, rotate the sealing net 404 to close the placing net box 403 to prevent the agricultural products from falling. Then, place the placing net box 403 in the outer net frame 402, and start the electric push rod 401 by controlling the display 2. The electric push rod 401 accurately retracts and contracts according to the control command, pushing the outer net frame 402 to carry the placing net box 403 and the agricultural products to the designated position inside the sampling tank 3 smoothly. At this time, the agricultural products are ready to enter the rinsing and soaking operation stage. When the placing net box 403 reaches the sampling tank 3, the flushing structure 5 starts to work, and the flushing liquid passes through the water inlet pipe 502 and enters the flushing pipe 501 under the control of the water inlet valve 503. The operator can adjust the opening of the water inlet valve 503 and the flushing time according to the type of agricultural products and the pesticide residue status. The flushing pipe 501 is embedded in the sampling tank 3 and has a flushing hole on the inner side. The flushing liquid is evenly sprayed on the agricultural products in the net box 403 from the flushing hole. The distribution and size of the flushing holes ensure multi-angle and all-round flushing, which can effectively remove the pesticide residues on the surface and gaps of the agricultural products. During the flushing process, the mesh structure of the net box 403 allows the flushing liquid to fully contact the agricultural products and be discharged in time, which ensures the circulation and renewal of the flushing liquid and improves the flushing efficiency. Subsequently, the agricultural products The sample is kept in a stable state in the storage net box 403 for soaking, so that the pesticide residue is fully dissolved in the soaking liquid, providing good sample conditions for subsequent accurate detection. After rinsing and soaking, the first solenoid valve 602 at the bottom of the sampling tank 3 is opened, and the rinsing soaking liquid containing pesticide residues flows into the liquid collecting box 605 in the first box rack 604 through the lower tube 601, the first solenoid valve 602 and the first curved pipe 603 under the action of gravity. This direct collection method avoids liquid transfer loss and contamination, ensuring that the sample is complete and accurate. The sliding connection between the liquid collecting box 605 and the first box rack 604 is convenient for subsequent removal and inspection. When the sampling tank 3 needs to be cleaned, the first solenoid valve 602 is closed, and the second solenoid valve 6061 is opened. The cleaning wastewater flows through the left side of the lower tube 601 The waste liquid flows into the waste liquid collection box 6064 in the second box rack 6063 through the second solenoid valve 6061 and the second bend pipe 6062. The second solenoid valve 6061 accurately controls the flow direction of the waste liquid. The second bend pipe 6062 changes the flow direction to ensure that the wastewater flows smoothly into the waste liquid collection box 6064. The second box rack 6063 provides stable support. The sliding connection between the waste liquid collection box 6064 and the second box rack 6063 is convenient for cleaning and replacement, thereby achieving effective management of waste liquid, reducing environmental pollution, ensuring a clean and safe working environment, and ensuring the accuracy and standardization of subsequent agricultural product testing operations. During the whole process, the control display 2 is used to monitor and operate the operation of each component to ensure that the sampling device efficiently and accurately completes the sampling work of agricultural product pesticide residue detection.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for detecting pesticide residues in agricultural products, comprising a frame (1), characterized in that: A control display (2) is arranged on the top of the housing (1), a sampling tank (3) is bolted in the middle of the housing (1), a placement mechanism (4) is arranged on the bottom side of the housing (1), a flushing structure (5) is arranged inside the sampling tank (3), and a collection mechanism (6) is arranged at the bottom of the sampling tank (3); The placing mechanism (4) comprises an electric push rod (401) bolted to the top of the housing (1); the telescopic end of the electric push rod (401) is bolted to an outer net frame (402); a net box (403) for placing objects is arranged inside the outer net frame (402); and a sealing net (404) is rotatably connected to the front side of the net box (403).

2. The sampling device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The collecting mechanism (6) comprises a lower tube (601) connected to the bottom of the sampling tank (3), the right side of the lower tube (601) is connected to a first electromagnetic valve (602), and the right side of the first electromagnetic valve (602) is connected to a first curved tube (603).

3. A sampling device for detecting pesticide residues in agricultural products according to claim 2, characterized in that: The bottom of the first curved pipe (603) is connected to a first box frame (604), and the first box frame (604) is bolted to the bottom side of the shell frame (1).

4. A sampling device for detecting pesticide residues in agricultural products according to claim 3, characterized in that: A liquid collecting box (605) is slidably connected to the interior of the first box frame (604); the liquid collecting box (605) is located at the bottom of the first curved pipe (603); and a waste liquid collecting structure (606) is provided on the left side of the lower pipe (601).

5. A sampling device for detecting pesticide residues in agricultural products according to claim 4, characterized in that: The waste liquid collection structure (606) comprises a second solenoid valve (6061) connected to the left side of the lower tube (601), and the left side of the second solenoid valve (6061) is connected to a second curved tube (6062).

6. A sampling device for detecting pesticide residues in agricultural products according to claim 5, characterized in that: The bottom of the second curved pipe (6062) is connected to a second box frame (6063), the second box frame (6063) is bolted to the bottom side of the shell frame (1), and a waste liquid collection box (6064) is slidably connected inside the second box frame (6063).

7. The sampling device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The flushing structure (5) comprises a flushing tube (501) embedded in the sampling tank (3), and a flushing hole is provided on the inner side of the flushing tube (501).

8. A sampling device for detecting pesticide residues in agricultural products according to claim 7, characterized in that: The top of the flushing pipe (501) is connected to a water inlet pipe (502), and the rear side of the water inlet pipe (502) is connected to a water inlet valve (503).

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