Sample filtering device for detecting pesticide residues of agricultural products

Abstract

The utility model relates to the technical field of filtering devices, and provides a sample filtering device for detecting pesticide residues of agricultural products, which comprises a working box and a screen frame, a feed port is arranged at the top end of the working box, a box cover is rotatably connected onto the feed port, a water inlet pipe is arranged at the top end of the working box, and a first valve is mounted on the water inlet pipe. A water outlet pipe is arranged at the bottom end of the working box, a second valve is installed on the water outlet pipe, a through groove is formed in the outer wall of the working box, the screen frame is slidably connected to the through groove, a front cover plate is fixedly connected to the front end of the screen frame, a handle is arranged on the front cover plate, and two clamping pieces matched with the front cover plate are rotationally connected to the front end of the working box. A bearing frame is fixedly connected to the inner side wall of the working box, the top end of the bearing frame is tightly attached to the bottom end of the net frame, and supporting legs are fixedly connected to the four corners of the bottom end of the working box, so that the purposes of conveniently taking out agricultural products and improving the working efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically to a sample filtration device for detecting pesticide residues in agricultural products. Background Technology

[0002] Agricultural products are goods produced in agriculture, such as sorghum, rice, peanuts, corn, wheat, and local specialties. National regulations define primary agricultural products as plants, animals, and their products obtained from agricultural activities, excluding processed products. During the growth process of agricultural products, most fruits and vegetables require pesticide spraying to ensure a good yield. However, excessive pesticide spraying can pose safety hazards to consumers, therefore, pesticide residue testing is necessary.

[0003] A search revealed a Chinese patent publication dated October 16, 2020, with publication number CN211697191U, describing a sample filtration device for detecting pesticide residues in agricultural products. The device comprises a base plate, a housing, a door, a handle, a lever, and a valve. The housing is mounted on the top of the base plate, with an inner cavity in the middle. A movable device is located at the bottom of the base plate. A shut-off valve is located at the top of the discharge port, with the left end of the discharge port communicating with the inner cavity of the housing. The door covers the feeding port, and its bottom end is rotatably connected to the left end of the housing. The right end of the handle is connected to the left end of the door. A dividing groove is located at the top of the discharge port. A filter screen is located at the bottom of the lever, extending through the dividing groove into the discharge port. A water inlet is located at the top of the right end of the base plate, with its top end connected to the bottom end of the valve. The valve controls the flow of the water inlet. A stirring device is located at the top of the base plate.

[0004] While the aforementioned existing technical solutions can improve the accuracy of test data, the device makes it inconvenient to remove agricultural products after sampling, thus reducing work efficiency. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sample filtering device for detecting pesticide residues in agricultural products, thereby solving the problem mentioned in the background technology that it is inconvenient to remove agricultural products after sampling, thus reducing work efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sample filtration device for detecting pesticide residues in agricultural products, comprising a working box and a mesh frame. The top of the working box has an inlet, and a box cover is rotatably connected to the inlet. The top of the working box has a water inlet pipe with a first valve installed on it. The bottom of the working box has a water outlet pipe with a second valve installed on it. A through groove is formed on the outer wall of the working box, and the mesh frame is slidably connected to the through groove. A front cover plate is fixedly connected to the front end of the mesh frame, and a handle is provided on the front cover plate. Two locking devices that cooperate with the front cover plate are rotatably connected to the front end of the working box. A support frame is fixedly connected to the inner side wall of the working box, with the top of the support frame tightly against the bottom end of the mesh frame. Support legs are fixedly connected to the four corners of the bottom of the working box.

[0009] By adopting the above technical solution, agricultural products and aqueous solutions are placed into the working box through the feed inlet and water inlet pipe, respectively. The aqueous solution washes away pesticide residues on the agricultural products, causing the pesticide residues to fall into the aqueous solution. At this time, the second valve is activated, allowing the aqueous solution to be discharged through the outlet pipe, thus collecting the test sample. The agricultural product falls into the mesh frame, and then the two clamps are rotated to disengage from the front cover plate. The handle can then be pulled to move the front cover plate and mesh frame, thereby removing the mesh frame. This facilitates the removal of agricultural products and improves work efficiency.

[0010] Optionally, a base plate is fixedly connected to the bottom of the four support legs, and a caster wheel with a self-locking function is installed at each of the four corners of the bottom of the base plate.

[0011] By adopting the above technical solution, casters are used to facilitate the movement of equipment, thereby improving the convenience of the equipment.

[0012] Optionally, the top of the working box has a through hole, and a motor is installed on the top of the working box. The output end of the motor passes through the through hole and is connected to a rotating rod. The rotating rod is provided with multiple evenly distributed stirring rods.

[0013] By adopting the above technical solution, after the agricultural products and aqueous solution are placed into the working box, the motor is started to drive the rotating rod and stirring rod to rotate, thereby increasing the mixing speed of the agricultural products and aqueous solution and thus improving work efficiency.

[0014] Optionally, a sealing gasket is provided at one end of the front cover, with one end of the sealing gasket tightly attached to the outer wall of the work box.

[0015] By adopting the above technical solution, the sealing gasket is used to improve the sealing between the front cover plate and the working box, thereby improving the stability of the equipment.

[0016] Optionally, the lower inner side wall of the working box is fixedly connected with a guide component that cooperates with the water outlet pipe.

[0017] By adopting the above technical solution, the guide is used to facilitate the sampling of the aqueous solution in the working box to the position of the water outlet pipe, thereby facilitating the discharge of the aqueous solution and reducing the water residue inside the working box.

[0018] (III) Beneficial Effects

[0019] In summary, this utility model has at least one of the following beneficial technical effects:

[0020] This sample filtration device for pesticide residue detection in agricultural products involves placing agricultural products and an aqueous solution into the working chamber through the feed inlet and water inlet pipe, respectively. The aqueous solution washes away pesticide residues on the agricultural products, causing them to fall into the aqueous solution. Then, the second valve is activated, allowing the aqueous solution to be discharged through the outlet pipe, thus collecting the test sample. The agricultural product falls into the mesh frame. Subsequently, rotating two locking devices disengages them from the front cover plate. The handle can then be pulled to move the front cover plate and mesh frame, thereby removing the mesh frame and facilitating the removal of agricultural products, thus improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first side view of the present invention;

[0022] Figure 2 This is a first cross-sectional view of the present invention.

[0023] Figure 3 This is a second cross-sectional view of the present invention.

[0024] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Working box; 2. Mesh frame; 3. Box cover; 4. Water inlet pipe; 5. First valve; 6. Water outlet pipe; 7. Second valve; 8. Front cover plate; 9. Clamping device; 10. Support frame; 11. Support leg; 12. Base plate; 13. Casters; 14. Motor; 15. Rotating rod; 16. Stirring rod; 17. Sealing gasket; 18. Guide component. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1-4 A sample filtration device for detecting pesticide residues in agricultural products includes a working box 1 and a mesh frame 2. The top of the working box 1 has an inlet, and a cover 3 is rotatably connected to the inlet. A water inlet pipe 4 is located at the top of the working box 1, and a first valve 5 is installed on the water inlet pipe 4. A water outlet pipe 6 is located at the bottom of the working box 1, and a second valve 7 is installed on the water outlet pipe 6. A through groove is formed on the outer wall of the working box 1, and the mesh frame 2 is slidably connected to the through groove. A front cover plate 8 is fixedly connected to the front end of the mesh frame 2, and a handle is provided on the front cover plate 8. Two locking pieces 9 that cooperate with the front cover plate 8 are rotatably connected to the front end of the working box 1. A support frame 10 is fixedly connected to the inner side wall of the working box 1. The top of the support frame 10... The bottom of the work box 1 is tightly attached to the bottom of the mesh frame 2. Support legs 11 are fixedly connected to the four corners of the bottom of the work box 1. Agricultural products and aqueous solutions are put into the work box 1 through the feed port and water inlet pipe 4, respectively. The aqueous solution washes the pesticide residues on the agricultural products, so that the pesticide residues fall into the aqueous solution. At this time, the second valve 7 is activated, so that the aqueous solution is discharged through the water outlet pipe 6, so that the test sample is collected. At this time, the agricultural products fall into the mesh frame 2. Then, the two clamps 9 are rotated, so that the clamps 9 are disengaged from the front cover plate 8. At this time, the handle can be pulled to move the front cover plate 8 and the mesh frame 2, so as to remove the mesh frame 2, thereby facilitating the removal of agricultural products and improving work efficiency.

[0029] Reference Figure 2 The bottom ends of the four support legs 11 are fixedly connected to the base plate 12. The four corners of the bottom end of the base plate 12 are equipped with casters 13 with self-locking function. The casters 13 are used to facilitate the movement of the equipment, thereby improving the convenience of the equipment.

[0030] Reference Figure 3 The top of the working box 1 has a through hole, and a motor 14 is installed on the top of the working box 1. The output end of the motor 14 is connected to a rotating rod 15 through the through hole. The rotating rod 15 is equipped with multiple evenly distributed stirring rods 16. After the agricultural products and aqueous solution are put into the working box 1, the motor 14 is started to drive the rotating rod 15 and stirring rods 16 to rotate, thereby increasing the mixing speed of the agricultural products and aqueous solution and thus improving work efficiency.

[0031] Reference Figure 3 and Figure 4 A sealing gasket 17 is provided at one end of the front cover plate 8. One end of the sealing gasket 17 is in close contact with the outer wall of the working box 1. The sealing gasket 17 is used to improve the sealing between the front cover plate 8 and the working box 1, thereby improving the stability of the equipment.

[0032] Reference Figure 3 and Figure 4 The lower inner wall of the working box 1 is fixedly connected with a guide 18 that cooperates with the water outlet pipe 6. The guide 18 is used to guide the aqueous solution sampled in the working box 1 to the position of the water outlet pipe 6, so as to facilitate the discharge of the aqueous solution and reduce the water residue inside the working box 1.

[0033] In summary, the working principle and process of this sample filtration device for pesticide residue detection in agricultural products are as follows: First, the agricultural product and aqueous solution are placed into the working chamber 1 through the feed inlet and water inlet pipe 4, respectively. This allows the aqueous solution to wash away pesticide residues on the agricultural product, causing the residues to fall into the aqueous solution. Then, the second valve 7 is activated, allowing the aqueous solution to drain through the outlet pipe 6, thus collecting the sample. The agricultural product falls into the mesh frame 2. Next, the two locking pieces 9 are rotated, disengaging them from the front cover plate 8. The handle can then be pulled to move the front cover plate 8 and the mesh frame 2, allowing the mesh frame 2 to be removed, thus facilitating the removal of the agricultural product. To improve work efficiency, the universal wheels 13 are used to facilitate equipment movement, thereby improving equipment convenience. After the agricultural products and aqueous solution are placed into the working box 1, the motor 14 is started to drive the rotating rod 15 and the stirring rod 16 to rotate, thereby increasing the mixing speed of the agricultural products and aqueous solution, thereby improving work efficiency. The sealing gasket 17 is used to improve the sealing between the front cover plate 8 and the working box 1, thereby improving equipment stability. The guide 18 is used to facilitate the guidance of the sampled aqueous solution in the working box 1 to the position of the water outlet pipe 6, thereby facilitating the discharge of the aqueous solution and reducing water residue inside the working box 1.

[0034] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A sample filtering device for detecting pesticide residues in agricultural products, comprising a working box (1), characterized in that: Including the net frame (2), the top of the working box (1) is equipped with the water inlet pipe (4), the water inlet pipe (4) is installed with the first valve (5), the bottom of the working box (1) is equipped with the water outlet pipe (6), the water outlet pipe (6) is installed with the second valve (7), the outer wall of the working box (1) is equipped with the through slot, the net frame (2) is connected on the through slot, the front end of the net frame (2) is fixedly connected with the front cover plate (8), the front cover plate (8) is equipped with the handle, the front end of the working box (1) is rotatably connected with two clamping pieces (9) matched with the front cover plate (8), the inner side wall of the working box (1) is fixedly connected with the supporting frame (10), the top of the supporting frame (10) is closely attached to the bottom of the net frame (2), the four corner positions of the bottom of the working box (1) are all fixedly connected with the supporting leg (11).

2. The sample filtering device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The bottom of the four supporting legs (11) is fixedly connected with the bottom plate (12), the four corner positions of the bottom of the bottom plate (12) are all installed with the universal wheel (13) with self-locking function.

3. The sample filtering device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The top of the working box (1) is equipped with the through hole, the top of the working box (1) is installed with the motor (14), the output end of the motor (14) is connected with the rotating rod (15) penetrating through the through hole, the rotating rod (15) is equipped with multiple evenly distributed stirring rods (16).

4. The sample filtering device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: One end of the front cover plate (8) is equipped with the sealing washer (17), one end of the sealing washer (17) is closely attached to the outer wall of the working box (1).

5. The sample filtering device for detecting pesticide residues in agricultural products according to claim 1, characterized in that: The inner lower side wall of the working box (1) is fixedly connected with the guide piece (18) matched with the water outlet pipe (6).

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