Rapid extraction device for pesticide residues in food

Abstract

This utility model discloses a rapid extraction device for pesticide residues in food, belonging to the field of pesticide extraction technology. It includes a liquid extraction tank, with a filter screen fixedly installed in the middle of the tank's interior. A base plate is fixedly installed below the filter screen inside the tank. A rotating plate is rotatably mounted at the bottom of the tank via bearings. In this rapid extraction device, liquid containing pesticide residues flows through the filter screen to the top of the base plate. Rotating the rotating plate causes a limiting slider to slide from one end of a limiting groove to the other. At this time, the mounting block disengages from the positioning hole at one end of the limiting groove and slides on the surface of the extraction tank, compressing a return spring. When the positioning post aligns with the positioning holes at both ends of the limiting groove, the return spring rebounds, pushing the positioning post into the positioning hole, making the rotating plate less prone to rotation. At this point, the rotating plate and the rectangular groove on the base plate coincide, allowing the filtrate to flow down from the rectangular groove, thus controlling the discharge of the filtrate.

Description

Technical Field

[0001] This utility model belongs to the field of pesticide extraction technology, specifically a rapid extraction device for pesticide residues in food. Background Technology

[0002] Food pesticide residues refer to trace residues of pesticides used in agricultural production in food, including active ingredients, metabolites, and impurities. Rapid pesticide residue extraction devices are key equipment for food safety testing, designed to simplify traditional pretreatment processes and achieve efficient, rapid, and automated pesticide residue extraction. They are suitable for laboratory, market supervision, and on-site testing. Existing pesticide residue extraction devices, when the crushed food residue is placed into the filter tank, cannot control the start and stop of the filtrate discharge, which can easily cause the filtrate to overflow when the collection tank is removed, resulting in waste of the extract. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a rapid extraction device for pesticide residues in food. It solves the problem that when existing pesticide residue extraction devices are in operation, the filtrate is easily overflowed when the collection tank is removed because the start and stop of the filtrate discharge cannot be controlled. This results in the waste of the extract.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rapid extraction device for pesticide residues in food, comprising a liquid extraction tank, a filter screen fixedly installed in the middle of the liquid extraction tank, a base plate fixedly installed below the filter screen inside the liquid extraction tank, a rotating plate rotatably installed at the bottom of the liquid extraction tank via a bearing, and the base plate and the rotating plate being in close contact, several rectangular grooves being equally spaced through the surfaces of the base plate and the rotating plate, and the rectangular grooves on the surfaces of the base plate and the rotating plate being correspondingly positioned, limit sliders being fixedly installed on the top of the outer two sides of the rotating plate, an installation block being fixedly installed on the top of the limit sliders, a positioning post being slidably connected through the installation block, a return spring being sleeved on the surface of the positioning post located inside the installation block, limit grooves being provided on the outer two sides of the liquid extraction tank, and the limit grooves slidingly corresponding to one end of the limit slider surface, two positioning holes being provided on the top of the two ends of the limit grooves on both sides of the liquid extraction tank, and the positions of the positioning holes corresponding to the positioning posts, and a top cover being provided on the top of the liquid extraction tank.

[0005] As a further embodiment of this utility model: the top cover is fixedly installed with snap-fit ​​strips on both sides, and the liquid dispensing tank is fixedly installed with snap-fit ​​plates on both sides, and the positions of the snap-fit ​​plates correspond to the snap-fit ​​strips.

[0006] As a further embodiment of this utility model: a rotating stud is threaded through the top of the liquid collection tank, and a pressure plate is rotatably connected to the bottom of the rotating stud via a bearing.

[0007] As a further embodiment of this utility model: two guide rods are fixedly installed on the top of the pressure plate, and the guide rods are slidably connected to the top cover.

[0008] As a further embodiment of this utility model: a collection tank is provided at the bottom of the rotating plate, positioning blocks are fixedly installed on both sides of the bottom of the outer surface of the rotating plate, and sliding grooves are provided on both sides of the top of the inner wall of the collection tank, with the sliding grooves corresponding to the positions of the positioning blocks.

[0009] As a further embodiment of this utility model: a buckle is fixedly installed on the outer surface of the rotating plate at the top of the positioning block, and a snap-fit ​​groove is provided on both sides of the outside of the collection tank, and the snap-fit ​​groove corresponds to the position of the buckle.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This rapid pesticide residue extraction device for food uses a rotating plate, a limiting slider, and a rectangular groove. Chopped food is placed into the extraction tank, and the liquid containing pesticide residues flows through a filter screen to the top of the base plate. Rotating the rotating plate causes the limiting slider to slide from one end of the limiting groove to the other. At this point, the mounting block detaches from the positioning hole at one end of the limiting groove and slides on the surface of the extraction tank, compressing the return spring. When the positioning pin aligns with the positioning holes at both ends of the limiting groove, the return spring rebounds, pushing the positioning pin into the positioning hole, making the rotating plate less prone to rotation. At this point, the rotating plate and the rectangular groove on the base plate overlap, allowing the filtrate to flow down from the rectangular groove, thus controlling the discharge of the filtrate.

[0012] 2. This rapid pesticide residue extraction device for food uses a snap-fit ​​plate and a pressure plate to place the top cover on top of the liquid extraction tank. Rotating the top cover aligns the snap-fit ​​strip and the snap-fit ​​plate. Pulling the snap-fit ​​plate into the snap-fit ​​strip fixes the top cover to the top of the liquid extraction tank. Twisting the rotating stud causes the pressure plate to press down, squeezing out the juice from the food scraps on top of the filter screen more completely, thus accelerating the extraction rate of pesticide residues.

[0013] 3. This rapid pesticide residue extraction device for food uses a buckle and a snap-fit ​​groove. The positioning block at the bottom of the rotating plate is aligned with the notch at the top of the sliding groove, so that the rotating plate is inserted into the top of the collection tank. The buckle is snapped onto the surface of the collection tank. The collection tank is rotated so that the positioning block slides in the sliding groove and the buckle slides outside the collection tank until the buckle is snapped into the snap-fit ​​groove, thus completing the snap-fit ​​installation of the collection tank. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the rotating plate of this utility model;

[0016] Figure 3This is a cross-sectional structural diagram of the liquid collection tank of this utility model;

[0017] In the diagram: 1. Liquid collection tank; 2. Filter screen; 3. Base plate; 4. Rotating plate; 5. Limiting slider; 6. Limiting groove; 7. Positioning hole; 8. Mounting block; 9. Positioning post; 10. Return spring; 11. Rectangular groove; 12. Top cover; 13. Rotating stud; 14. Guide rod; 15. Pressure plate; 16. Snap-fit ​​strip; 17. Snap-fit ​​plate; 18. Buckle; 19. Positioning block; 20. Collection tank; 21. Sliding groove; 22. Snap-fit ​​groove. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figure 1-3 As shown, this utility model provides a technical solution: a rapid extraction device for pesticide residues in food, including a liquid extraction tank 1. A filter screen 2 is fixedly installed in the middle of the liquid extraction tank 1. A base plate 3 is fixedly installed below the filter screen 2 inside the liquid extraction tank 1. A rotating plate 4 is rotatably installed at the bottom of the liquid extraction tank 1 via a bearing, and the base plate 3 and the rotating plate 4 are in close contact. Several rectangular grooves 11 are provided through the surfaces of the base plate 3 and the rotating plate 4 at equal angles, and the rectangular grooves 11 on the surfaces of the base plate 3 and the rotating plate 4 are positioned correspondingly. Through the rectangular grooves 11, the filtrate flowing down from the filter screen 2 flows into the collection tank 20 through the rectangular grooves 11. The flow rate of the filtrate is controlled by adjusting the relative position of the base plate 3 and the rotating plate 4 and controlling the opening and closing of the rectangular grooves 11.

[0020] Limiting sliders 5 are fixedly installed on the top of both sides of the outer ring of the rotating plate 4. An installation block 8 is fixedly installed on the top of the limiting slider 5. A positioning post 9 is slidably connected through the installation block 8. A return spring 10 is sleeved on the surface of the positioning post 9 inside the installation block 8. Limiting grooves 6 are provided on both sides of the outside of the liquid tank 1. The limiting grooves 6 slide correspondingly on one end of the limiting slider 5. Two positioning holes 7 are provided on the top of both ends of the limiting grooves 6 on both sides of the liquid tank 1. The positions of the positioning holes 7 correspond to the positioning posts 9. By providing the limiting grooves 6, the limiting slider 5 slides from one end of the limiting groove 6 to the other end to limit the rotation angle of the rotating plate 4, thereby controlling the overlap and misalignment of the rectangular groove 11 at the bottom of the base plate 3 and the rectangular groove 11 on the rotating plate 4.

[0021] The liquid dispensing tank 1 is provided with a top cover 12. The top cover 12 is fixedly installed with snap-fit ​​strips 16 on both sides. The liquid dispensing tank 1 is fixedly installed with snap-fit ​​plates 17 on both sides, and the position of the snap-fit ​​plates 17 corresponds to the snap-fit ​​strips 16. By providing snap-fit ​​plates 17, the snap-fit ​​plates 17 are snapped into the snap-fit ​​strips 16, so that the top cover 12 is not easy to rotate on the top of the liquid dispensing tank 1.

[0022] The top of the liquid collection tank 1 is threaded with a rotating stud 13, and the bottom of the rotating stud 13 is rotatably connected to a pressure plate 15 via a bearing. By rotating the rotating stud 13, the pressure plate 15 is pressed down, which squeezes food debris and increases the liquid collection rate of the liquid collection tank 1.

[0023] Two guide rods 14 are fixedly installed on the top of the pressure plate 15, and the guide rods 14 are slidably connected to the top cover 12. With the guide rods 14, when the pressure plate 15 is pressed down, the guide rods 14 slide in the top cover 12, so that the pressure plate 15 will not deviate when it moves.

[0024] The bottom of the rotating plate 4 is provided with a collection tank 20. Positioning blocks 19 are fixedly installed on both sides of the bottom of the outer surface of the rotating plate 4. The top sides of the inner wall of the collection tank 20 are provided with sliding grooves 21, and the sliding grooves 21 correspond to the positions of the positioning blocks 19. By providing positioning blocks 19 and aligning the top of the positioning blocks 19 with the sliding grooves 21, the collection tank 20 is snapped into the bottom of the rotating plate 4, thus completing the precise installation of the collection tank 20.

[0025] A buckle 18 is fixedly installed on the outer surface of the rotating plate 4 at the top of the positioning block 19. The outer sides of the collection tank 20 are provided with snap-fit ​​grooves 22, and the snap-fit ​​grooves 22 correspond to the positions of the buckle 18. By providing snap-fit ​​grooves 22, the buckle 18 slides on the surface of the collection tank 20, so that the buckle 18 is snapped into the snap-fit ​​groove 22, thereby fixing the collection tank 20 to the bottom of the rotating plate 4.

[0026] The working principle of this utility model is as follows:

[0027] Align the positioning block 19 at the bottom of the rotating plate 4 with the notch at the top of the sliding groove 21, so that the rotating plate 4 is inserted into the top of the collection tank 20. Rotate the collection tank 20 to make the positioning block 19 slide in the sliding groove 21. At this time, the buckle 18 slides on the surface of the collection tank 20 and engages with the snap-fit ​​groove 22, so that the collection tank 20 is fixed at the bottom of the rotating plate 4. Pour the crushed food scraps into the liquid collection tank 1, cover the top cover 12, align the snap-fit ​​strip 16 and the snap-fit ​​plate 17, and snap the snap-fit ​​plate 17 into the snap-fit ​​strip 16, so that the top cover 12 is not easy to rotate on the top of the liquid collection tank 1. Then twist the rotating screw. The column 13 presses down the pressure plate 15 to crush the food scraps, causing the juice to quickly extract and pass through the filter screen 2. Then, the rotating plate 4 is rotated, causing the limiting slider 5 to slide from one end of the limiting groove 6 to the other end. At the same time, the positioning column 9 disengages from one positioning hole 7, compressing the return spring 10. When the positioning column 9 moves to another positioning hole 7, it is pushed out by the rebound action of the return spring 10 and inserted into the mounting block 8, making it difficult for the rotating plate 4 to rotate. At the same time, the rectangular groove 11 on the rotating plate 4 and the rectangular groove 11 on the bottom plate 3 are aligned, allowing the filtrate to flow into the collection tank 20, which facilitates the control of the discharge of the extract.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A rapid extraction device for pesticide residues in food, comprising a liquid extraction tank (1), characterized in that: A filter screen (2) is fixedly installed in the middle of the inside of the liquid collection tank (1). A base plate (3) is fixedly installed below the filter screen (2) inside the liquid collection tank (1). A rotating plate (4) is rotatably installed at the bottom of the liquid collection tank (1) via a bearing. The base plate (3) and the rotating plate (4) are in close contact. Several rectangular grooves (11) are provided through the surfaces of the base plate (3) and the rotating plate (4) at equal angles. The rectangular grooves (11) on the surfaces of the base plate (3) and the rotating plate (4) are correspondingly positioned. Limiting sliders (5) are fixedly installed on the top of both sides of the outer ring of the rotating plate (4). A mounting block (8) is fixedly installed on the top of the slider (5). A positioning column (9) is slidably connected through the mounting block (8). A return spring (10) is sleeved on the surface of the positioning column (9) inside the mounting block (8). Limiting grooves (6) are provided on both sides of the outside of the liquid collection tank (1). The limiting grooves (6) slide correspondingly on one end of the limiting slider (5). Two positioning holes (7) are provided on the top of the two ends of the limiting grooves (6) on both sides of the liquid collection tank (1). The positions of the positioning holes (7) correspond to the positioning columns (9). A top cover (12) is provided on the top of the liquid collection tank (1).

2. The rapid extraction device for pesticide residues in food according to claim 1, characterized in that: The top cover (12) is fixedly installed with snap-fit ​​strips (16) on both sides, and the liquid collection tank (1) is fixedly installed with snap-fit ​​plates (17) on both sides, and the position of the snap-fit ​​plates (17) corresponds to that of the snap-fit ​​strips (16).

3. The rapid extraction device for pesticide residues in food according to claim 1, characterized in that: The top of the liquid collection tank (1) is threadedly connected to a rotating stud (13), and the bottom of the rotating stud (13) is rotatably connected to a pressure plate (15) via a bearing.

4. The rapid extraction device for pesticide residues in food according to claim 3, characterized in that: Two guide rods (14) are fixedly installed on the top of the pressure plate (15), and the guide rods (14) are slidably connected to the top cover (12).

5. The rapid extraction device for pesticide residues in food according to claim 1, characterized in that: The bottom of the rotating plate (4) is provided with a collection tank (20), and positioning blocks (19) are fixedly installed on both sides of the bottom of the outer surface of the rotating plate (4). The top sides of the inner wall of the collection tank (20) are provided with sliding grooves (21), and the sliding grooves (21) correspond to the positions of the positioning blocks (19).

6. The rapid extraction device for pesticide residues in food according to claim 5, characterized in that: The outer surface of the rotating plate (4) is fixedly installed with a buckle (18) on the top of the positioning block (19). The outer sides of the collection tank (20) are provided with snap-fit ​​grooves (22), and the snap-fit ​​grooves (22) correspond to the positions of the buckle (18).

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