A pesticide residue detection extraction device

Abstract

The utility model provides a kind of pesticide residue detection extraction device, it is related to agricultural product detection pretreatment technical field, comprising: bottle cap, first threaded ring, first threaded ring is fixedly connected to the lower surface of bottle cap, extraction bottle, first threaded ring outer wall is equipped with external thread, the inner wall of the bottle mouth of extraction bottle is equipped with the internal thread matched with it, both threaded connections, filter assembly, filter assembly includes second threaded ring, filter screen frame and filter screen, second threaded ring is fixedly connected to the surface of bottle cap, second threaded ring is fixedly connected to the lower surface of bottle cap, its inner wall is equipped with internal thread, the defect that the efficiency of mentioned in background art is low, pollution risk is high, batch processing burden is heavy is solved, the efficiency and reliability of pesticide residue extraction are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of pretreatment technology for agricultural product testing, and in particular to a pesticide residue detection and extraction device. Background Technology

[0002] Pesticide residue detection extraction devices are used to extract pesticide components from vegetable, fruit, and other samples using solvents and achieve solid-liquid separation before detection. Traditional methods typically involve placing the sample directly into an extraction bottle, adding solvent, shaking, and then separating the extract by pouring or filtering with a separate funnel or filter paper. This process is cumbersome, relies on manual filtration, and is time-consuming.

[0003] However, because the filtration step is separate from the extraction bottle, an additional filtration operation is required after shaking, leading to prolonged process time and low efficiency. Furthermore, spillage or cross-contamination is prone to occur during pouring, affecting detection accuracy. Especially in batch processing, the repetitive filtration significantly increases workload, making it difficult to meet the demands for rapid, efficient, and convenient testing.

[0004] Therefore, it is necessary to provide a pesticide residue detection and extraction device to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a pesticide residue detection and extraction device.

[0006] This utility model provides a pesticide residue detection and extraction device, comprising: Bottle cap; The first threaded ring is fixedly connected to the lower surface of the bottle cap; The extraction bottle has an external thread on the outer wall of the first threaded ring and an internal thread on the inner wall of the bottle mouth that matches the external thread. A filter assembly includes a second threaded ring, a filter screen frame, and a filter screen. The second threaded ring is fixedly connected to the lower surface of the bottle cap. The inner wall of the second threaded ring is provided with an internal thread. The outer wall of the filter screen frame is provided with a thread and is threadedly connected to the second threaded ring. The filter screen is fixedly connected to the lower end of the filter screen frame.

[0007] Preferably, the system also includes an infusion assembly, which includes a knob, an infusion port, a rotating disk, and a rotating rod. The bottle cap has a placement groove matching the size of the rotating disk, and the rotating disk is rotatably connected to the placement groove. One end of the rotating rod rotatably passes through the bottle cap and is fixedly connected to the surface of the rotating disk. The knob is fixedly connected to the other end of the rotating rod. The infusion port includes a first through hole on the bottle cap and a second through hole on the rotating disk. When the first through hole and the second through hole coincide, an infusion channel is formed; when the rotating disk rotates until the two holes are misaligned, the channel is closed, achieving a seal.

[0008] Preferably, it also includes a limiting component, which includes a limiting nut, a handle, and a limiting ring. The limiting ring is fixedly connected to the surface of the bottle cap and is sleeved on the circumferential surface of the rotating rod. The limiting nut is threadedly connected to the circumferential surface of the rotating rod, and the handle is fixedly connected to the surface of the limiting nut.

[0009] Preferably, a sealing groove is formed on the surface of the bottle cap, and a sealing ring is fixedly connected in the sealing groove. The sealing ring is located at the connection between the bottle cap and the extraction bottle.

[0010] Preferably, the circumferential surface of the bottle cap is fixedly connected with multiple anti-slip strips.

[0011] Compared with related technologies, the pesticide residue detection and extraction device provided by this utility model has the following beneficial effects: 1. This utility model integrates the filter assembly with the bottle cap and features a detachable filter frame, enabling solid-liquid separation of the sample after shaking without additional filtration. The extract remains directly in the bottle, while the residue is removed along with the filter. This completely avoids the problems of liquid spillage, bottle mouth blockage, and cross-contamination caused by pouring filtration in traditional methods. It simplifies the operation process, shortens the extraction time, and effectively solves the technical problems of cumbersome steps, low efficiency, high risk of contamination, and heavy burden of batch processing mentioned in the background technology. It significantly improves the accuracy of detection and work efficiency.

[0012] 2. This utility model features an infusion structure with a knob and a limiting component, which can be sealed in place after adding liquid, enabling flexible operation of "sample first, then liquid addition, and then sealing". This avoids excessive or insufficient solvent due to uncertain sample volume. At the same time, the anti-slip strip and the limiting locking structure enhance the sealing performance and ease of operation of the device, further improving the safety, repeatability and reliability of the experiment. Attached Figure Description

[0013] Figure 1 A first-view perspective perspective view provided for this utility model; Figure 2 A cross-sectional view provided for this utility model; Figure 3 The first partial exploded view provided for this utility model; Figure 4 This is a second partial exploded view provided for this utility model.

[0014] Labels in the diagram: 1. Bottle cap; 2. Extraction bottle; 301. Knob; 302. Infusion port; 303. Rotating disc; 304. Rotating rod; 4. First threaded ring; 501. Second threaded ring; 502. Filter screen frame; 503. Filter screen; 6. Anti-slip strip; 7. Sealing ring; 801. Limiting nut; 802. Handle; 803. Limiting ring. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Please refer to the following: Figures 1 to 4 A pesticide residue detection and extraction device, comprising: Bottle cap 1; The first threaded ring 4 is fixedly connected to the lower surface of the bottle cap 1; Extraction bottle 2, the outer wall of the first threaded ring 4 is provided with an external thread, and the inner wall of the bottle mouth of extraction bottle 2 is provided with an internal thread that matches the external thread; The filter assembly includes a second threaded ring 501, a filter screen frame 502, and a filter screen 503. The second threaded ring 501 is fixedly connected to the lower surface of the bottle cap 1. The inner wall of the second threaded ring 501 is provided with an internal thread. The outer wall of the filter screen frame 502 is provided with a thread and is threadedly connected to the second threaded ring 501. The filter screen 503 is fixedly connected to the lower end of the filter screen frame 502.

[0017] In the specific implementation process, first unscrew the filter frame 502 from the second threaded ring 501 below the bottle cap 1, put the vegetable or fruit sample to be tested into the filter 503, and then tighten the filter frame 502 back onto the second threaded ring 501. Next, screw the bottle cap 1 onto the extraction bottle 2. In this way, the sample is fixed in the filter 503 and will not move around when shaken. The liquid can also pass through the filter 503 smoothly into the bottle, realizing the automatic separation of the sample and the extract. This eliminates the traditional filtration steps, avoids the problems of bottle mouth blockage and liquid leakage, improves extraction efficiency, and makes the operation cleaner and more hygienic.

[0018] refer to Figures 1 to 4 As shown, it also includes an infusion assembly, which includes a knob 301, an infusion port 302, a rotating disk 303, and a rotating rod 304. The bottle cap 1 has a placement groove that matches the size of the rotating disk 303. The rotating disk 303 is rotatably connected to the placement groove. One end of the rotating rod 304 rotates through the bottle cap 1 and is fixedly connected to the surface of the rotating disk 303. The knob 301 is fixedly connected to the other end of the rotating rod 304. The infusion port 302 includes a first through hole on the bottle cap 1 and a second through hole on the rotating disk 303. When the first through hole and the second through hole coincide, an infusion channel is formed. When the rotating disk 303 rotates until the two holes are misaligned, the channel is closed, achieving a seal.

[0019] In the above embodiment, after the sample is loaded and the bottle cap 1 is tightened, extraction solvent needs to be added to the bottle. At this time, rotate the knob 301. The knob 301 drives the rotating rod 304 and the rotating disk 303 inside to rotate together until the infusion port 302 on the bottle cap 1 and the rotating disk 303 are aligned to form a through hole. Liquid can then be added to the bottle from here. After adding to the appropriate liquid level, rotate the knob 301 in the opposite direction to make the two holes staggered and closed, so that the liquid will not leak out. The advantage of this design is that the sample can be placed first and then the liquid can be added, avoiding liquid overflow or insufficiency due to uncertain sample volume. It is particularly suitable for the testing of agricultural products of different sizes. After adding the liquid, it can be shaken directly without removing the cap, which is safe and convenient.

[0020] refer to Figures 1 to 4 As shown, it also includes a limiting component, which includes a limiting nut 801, a handle 802 and a limiting ring 803. The limiting ring 803 is fixedly connected to the surface of the bottle cap 1 and is sleeved on the circumferential surface of the rotating rod 304. The limiting nut 801 is threadedly connected to the circumferential surface of the rotating rod 304 and the handle 802 is fixedly connected to the surface of the limiting nut 801.

[0021] In the above embodiment, after the infusion port 302 is closed, hold the handle 802 and rotate the limiting nut 801 to move the limiting nut 801 along the rotating rod 304 toward the limiting ring 803 until the limiting nut 801 is completely pressed against the limiting ring 803. This locks the axial position of the rotating rod 304 and prevents the rotating rod 304 from rotating again. It is equivalent to fixing the knob 301 and the rotating disk 303, ensuring that the infusion port 302 will not loosen or misalign due to vibration during the oscillation process, thus preventing leakage. This limiting method has a simple structure, is easy to operate, and has reliable locking. It can effectively prevent organic solvent leakage and improve the sealing and safety of the device during the oscillation process.

[0022] refer to Figures 1 to 4 As shown, a sealing groove is provided on the surface of the bottle cap 1, and a sealing ring 7 is fixedly connected in the sealing groove. The sealing ring 7 is located at the connection between the bottle cap 1 and the extraction bottle 2.

[0023] In the above embodiment, when the cap 1 and the extraction bottle 2 are screwed together, the sealing ring 7 will press tightly against the contact area between the two, providing a good seal. This prevents the solvent inside the bottle from leaking out from the threaded connection during oscillation, and also prevents leakage due to pressure changes. The presence of the sealing ring 7 makes the entire device more stable and reliable, preventing leakage even during violent oscillation, protecting the safety of the operator, ensuring the integrity of the extract, avoiding sample loss or cross-contamination, and improving the accuracy of the test results.

[0024] refer to Figures 1 to 4As shown, multiple anti-slip strips 6 are fixedly connected to the circumferential surface of the bottle cap 1.

[0025] In the above embodiment, the outer ring of the bottle cap 1 has multiple raised anti-slip strips 6. When twisting the bottle cap 1 by hand, the fingers can be caught in these stripes, increasing the friction. Whether tightening or opening, it is particularly effortless. Especially when operating with gloves, it will not slip, solving the problem of traditional smooth bottle caps being difficult to twist. It is especially suitable for laboratory use scenarios with frequent disassembly and assembly, improving the convenience and efficiency of operation, and is not easy to get tired after long-term use.

[0026] The working principle of the pesticide residue detection and extraction device provided by this utility model is as follows: When using this device, first unscrew the filter frame 502 from the second threaded ring 501 below the bottle cap 1, place the vegetable or fruit sample to be tested into the filter 503, then tighten the filter frame 502 again, and then screw the bottle cap 1 onto the extraction bottle 2. Next, rotate the knob 301 to open the infusion port 302, add an appropriate amount of extraction solvent, and then close the infusion port 302. Finally, rotate the limit nut 801 with the handle 802 to lock it against the limit ring 803. Finally, place the device into the shaker for shaking extraction. After shaking, there is no need to disassemble the bottle for filtration, as the extract is directly left in the bottle, and the filter residue can be removed along with the filter assembly. The entire process does not require intermediate transfer or additional filtration, making it simple to operate and with good sealing. It effectively avoids the problems of cumbersome operation, long time consumption, liquid spillage, and cross-contamination caused by step-by-step filtration in traditional methods. It solves the defects of low efficiency, high risk of contamination, and heavy burden of batch processing mentioned in the background technology, and significantly improves the efficiency and reliability of pesticide residue extraction.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pesticide residue detection and extraction device, characterized in that, include: Bottle cap (1); The first threaded ring (4) is fixedly connected to the lower surface of the bottle cap (1); Extraction bottle (2), the outer wall of the first threaded ring (4) is provided with an external thread, and the inner wall of the bottle mouth of the extraction bottle (2) is provided with an internal thread that matches the external thread; The filter assembly includes a second threaded ring (501), a filter frame (502), and a filter (503). The second threaded ring (501) is fixedly connected to the lower surface of the bottle cap (1). The inner wall of the second threaded ring (501) is provided with an internal thread. The outer wall of the filter frame (502) is provided with a thread and is threadedly connected to the second threaded ring (501). The filter (503) is fixedly connected to the lower end of the filter frame (502).

2. The pesticide residue detection and extraction device according to claim 1, characterized in that, It also includes an infusion assembly, which includes a knob (301), an infusion port (302), a rotating disk (303), and a rotating rod (304). The bottle cap (1) has a placement groove that matches the size of the rotating disk (303). The rotating disk (303) is rotatably connected to the placement groove. One end of the rotating rod (304) rotates through the bottle cap (1) and is fixedly connected to the surface of the rotating disk (303). The knob (301) is fixedly connected to the other end of the rotating rod (304). The infusion port (302) includes a first through hole on the bottle cap (1) and a second through hole on the rotating disk (303). When the first through hole and the second through hole coincide, an infusion channel is formed. When the rotating disk (303) rotates to the point where the two holes are misaligned, the channel is closed, achieving a seal.

3. The pesticide residue detection and extraction device according to claim 2, characterized in that, It also includes a limiting component, which includes a limiting nut (801), a handle (802) and a limiting ring (803). The limiting ring (803) is fixedly connected to the surface of the bottle cap (1) and is sleeved on the circumferential surface of the rotating rod (304). The limiting nut (801) is threadedly connected to the circumferential surface of the rotating rod (304), and the handle (802) is fixedly connected to the surface of the limiting nut (801).

4. The pesticide residue detection and extraction device according to claim 2, characterized in that, The bottle cap (1) has a sealing groove on its surface, and a sealing ring (7) is fixedly connected in the sealing groove. The sealing ring (7) is located at the connection between the bottle cap (1) and the extraction bottle (2).

5. The pesticide residue detection and extraction device according to claim 2, characterized in that, The bottle cap (1) has multiple anti-slip strips (6) fixedly connected to its circumferential surface.

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