Portable pesticide residue detector

Abstract

This utility model belongs to the technical field of portable pesticide residue detectors, specifically relating to a portable pesticide residue detector, including a housing and a cover rotatably connected to the back of the housing via a hinge. A detection mechanism is installed inside the housing, and a detection port is connected to the top shell of the detection mechanism. A support plate is inserted into the side wall of the housing. This utility model utilizes the coordinated operation of a first rectangular block, a second rectangular block, a bidirectional threaded rod, a threaded sleeve, a guide rod, a guide sleeve, and a limiting block. When carrying the portable pesticide residue detector outdoors for testing, auxiliary equipment such as droppers and gloves can be placed on the support plate. Compared to placing auxiliary equipment directly on the ground, this method effectively avoids contamination of the auxiliary equipment by ground dust, debris, bacteria, etc., thus ensuring the cleanliness of the auxiliary equipment during the testing process and ultimately ensuring the accuracy of the test results, providing reliable support for pyrethroid pesticide residue detection.

Description

Technical Field

[0001] This utility model belongs to the technical field of portable pesticide residue detectors, and specifically relates to a portable pesticide residue detector. Background Technology

[0002] A portable pesticide residue detector is used to detect pyrethroid pesticides. In practice, there is a standard procedure for using this detector: utilizing the highly efficient catalytic action of enzymes to convert the "biological signal" of antigen-antibody binding into a "detectable chemical signal (color change)." The wells of the ELISA plate are pre-coated with specific antibodies against pyrethroid pesticides. After the sample is added, the pyrethroid pesticide (antigen) in the sample binds to the antibody. Then, an enzyme-labeled pyrethroid antigen analog is added, which binds to the unbound antibody, forming an "antibody-enzyme-labeled antigen" complex. Finally, the enzyme substrate (such as a chromogenic agent) is added, and the enzyme catalyzes the substrate to produce a color change (the color intensity is negatively correlated with the pyrethroid content in the sample: the more pesticide, the less enzyme-labeled antigen binds, and the lighter the color).

[0003] However, portable pesticide residue detectors, due to their portability, are often taken outdoors for testing. When conducting pesticide residue testing outdoors, the lack of a suitable operating platform often forces them to be placed on the ground. Furthermore, the testing process inevitably requires the use of auxiliary equipment such as droppers and gloves. However, the outdoor ground environment is complex, containing dust, debris, bacteria, and other contaminants. If these auxiliary devices are placed directly on the ground, they are highly susceptible to contamination. Once these contaminated auxiliary devices come into contact with the test solution or the detector, they can interfere with the testing process, thereby affecting the accuracy of the results. Utility Model Content

[0004] The purpose of this invention is to provide a portable pesticide residue detector, addressing the problem that existing portable pesticide residue detectors, while easy to carry, often require outdoor use. When conducting pesticide residue testing outdoors, the lack of a suitable operating platform often forces them to be placed on the ground. Furthermore, the testing process inevitably requires the use of auxiliary equipment such as droppers and gloves. However, the outdoor ground environment is complex, containing dust, debris, bacteria, and other contaminants. If these auxiliary devices are placed directly on the ground, they are easily contaminated. If these contaminated auxiliary devices come into contact with the test solution or the detector, it can interfere with the testing process and affect the accuracy of the results.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A portable pesticide residue detector, comprising a box body and a box cover rotatably connected to the back end of the box body by a hinge. A detection mechanism is installed inside the box body. The top outer shell of the detection mechanism is connected with a detection port. A support plate is inserted into the side wall of the box body. A first rectangular block is connected to the side wall of the box body. A second rectangular block is connected to the side wall of the box body. A bidirectional threaded rod is rotatably connected inside the first rectangular block through a bearing. A threaded sleeve is threadedly connected to the surface of the bidirectional threaded rod. A guide rod is installed inside the second rectangular block. A guide sleeve is sleeved on the surface of the guide rod. A limiting block is connected between the threaded sleeve and the guide sleeve.

[0006] As a preferred embodiment of the portable pesticide residue detector of the present utility model, the limiting block is in a "C" shape, and the inner wall of the limiting block is in contact with the front end of the support plate.

[0007] As a preferred embodiment of the portable pesticide residue detector of the present utility model, the opening size of the threaded sleeve is the same as that of the first rectangular block, and the opening size of the guide sleeve is the same as that of the second rectangular block.

[0008] As a preferred embodiment of the portable pesticide residue detector of the present utility model, the limiting block is slidably connected between the first rectangular block and the second rectangular block through the threaded sleeve and the guide sleeve.

[0009] As a preferred embodiment of the portable pesticide residue detector of the present utility model, a protective cover is inserted into the top of the side wall of the box body away from the support plate. A slider is connected to the bottom end of the protective cover. A chute adapted to the slider is opened at the top of the outer shell of the detection mechanism. The protective cover is slidably connected to the outer shell of the detection mechanism through the slider and the chute.

[0010] As a preferred embodiment of the portable pesticide residue detector of the present utility model, a positioning block is connected to the side wall of the protective cover. A fixing block is connected to the side wall of the box body. A spring is installed inside the fixing block. A limiting plate is connected to the top end of the spring.

[0011] As a preferred embodiment of the portable pesticide residue detector of the present utility model, the limiting plate is elastically telescopically connected to the fixing block through the spring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are: Through the coordinated operation of the first rectangular block, the second rectangular block, the bidirectional threaded rod, the threaded sleeve, the guide rod, the guide sleeve, and the limiting block, the operator first rotates the bidirectional threaded rod. Under the action of the bidirectional thread, the threaded sleeve moves away from each other along the threaded trajectory on the surface of the bidirectional threaded rod. Subsequently, the threaded sleeve drives the limiting block connected to it to also move away from each other. At the same time, the guide sleeve moves smoothly along the surface of the guide rod, ensuring that the movement direction of the limiting block is accurate and stable. After the limiting block is removed from the surface of the support plate, the operator can pull the support plate open. Then, the bidirectional threaded rod is reversed to bring the two limiting blocks closer together until the limiting blocks are tightly pressed against the side wall of the support plate, thereby fixing the support plate in a suitable position. In this way, when carrying the portable pesticide residue detector to conduct testing outdoors, auxiliary equipment such as droppers and gloves can be placed on the support plate. Compared with placing the auxiliary equipment directly on the ground, this method can effectively avoid the auxiliary equipment from being contaminated by ground dust, debris, bacteria, etc., thereby ensuring the cleanliness of the auxiliary equipment during the testing process and ultimately ensuring the accuracy of the test results, providing reliable support for the detection of pyrethroid pesticide residues.

[0013] Through the cooperation of the protective cover, slide, slider, positioning block, fixing block, spring, and limiting plate, convenient and effective operation can be achieved. The operator presses down on the limiting plate, and under the pressure, the spring is compressed and deformed. At this time, the limiting plate will fit tightly against the top of the fixing block. Then, the operator pinches the positioning block and pulls the protective cover outward. The protective cover will drive the slider connected to it to move smoothly along the slide, thus easily opening the protective cover and exposing the detection port. This makes it easy to accurately insert the container containing the test liquid into the detection port for subsequent testing. When not testing, the protective cover will cover the detection port, forming an effective protective barrier. It can greatly reduce the possibility of external impurities, such as dust, debris, and fine particles, falling into the detection port, avoiding interference from these impurities in the testing process, thus ensuring the cleanliness of the testing environment and guaranteeing the accuracy and reliability of the test results. This provides a strong guarantee for the normal use and accurate detection of portable pesticide residue detectors. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional top view of the structure of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This is a three-dimensional left-side view of the device of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point B in the diagram; Figure 6 This is a schematic diagram of the limiting block connection structure of this utility model; Figure 7 This is a cross-sectional view of the fixing block structure of this utility model.

[0015] In the diagram: 1. Box body; 2. Box cover; 3. Detection mechanism; 4. Detection port; 5. Support plate; 6. First rectangular block; 7. Second rectangular block; 8. Bidirectional threaded rod; 9. Threaded sleeve; 10. Guide rod; 11. Guide sleeve; 12. Limiting block; 13. Protective cover; 14. Slide groove; 15. Sliding block; 16. Positioning block; 17. Fixing block; 18. Spring; 19. Limiting plate. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-7 The present invention provides the following technical solution: a portable pesticide residue detector, comprising a housing 1 and a cover 2 rotatably connected to the back of the housing 1 via a hinge, a detection mechanism 3 is installed inside the housing 1, a detection port 4 is connected to the top shell of the detection mechanism 3, a support plate 5 is inserted into the side wall of the housing 1, a first rectangular block 6 is connected to the side wall of the housing 1, a second rectangular block 7 is connected to the side wall of the housing 1, a bidirectional threaded rod 8 is rotatably connected inside the first rectangular block 6 via a bearing, a threaded sleeve 9 is threadedly connected to the surface of the bidirectional threaded rod 8, a guide rod 10 is installed inside the second rectangular block 7, a guide sleeve 11 is sleeved on the surface of the guide rod 10, and a limit block 12 is connected between the threaded sleeve 9 and the guide sleeve 11.

[0018] In practical use, the portable pesticide residue detector consists of a housing 1, a housing cover 2, a detection mechanism 3, and a detection port 4. Its model is PR-2006A portable pesticide residue detector. In actual application, the operator needs to place the container containing the test liquid at the detection port 4, and then start the detection program through the control panel on the detection mechanism 3 to detect pyrethroid pesticide residues.

[0019] It should be noted that the specific use of the portable pesticide residue detector is as follows: The test solution to be detected is obtained through extraction (such as extraction with organic solvents) and purification (removing impurities) to ensure that the sample matrix does not interfere with the immune reaction. The antibody against pyrethroid pesticides is pre-coated in the wells of the enzyme-labeled plate. The sample solution and enzyme-labeled pyrethroid antigen are added, and incubated at 37 °C for 30 minutes to allow the antigen and antibody to fully compete and bind. The well plate is washed 3 - 5 times with the washing solution to thoroughly remove the unbound enzyme-labeled antigen and impurities, avoiding interference signals. Then, the enzyme substrate (such as HRP corresponding to TMB) is added and incubated for 15 minutes. The enzyme catalyzes the substrate to produce a blue color. The stop solution (such as 2 M sulfuric acid) is added, and the color changes from blue to yellow to stabilize the reaction signal. The microplate reader measures the absorbance of each well at a wavelength of 450 nm. According to the "concentration - absorbance" curve plotted with the standard product, the content of pyrethroid pesticides in the sample is calculated.

[0020] Preferably, the limiting block 12 is in a "C" shape, and the inner wall of the limiting block 12 fits against the front end of the support plate 5. The threaded sleeve 9 has the same opening size as the first rectangular block 6, and the guide sleeve 11 has the same opening size as the second rectangular block 7. The limiting block 12 is slidably connected between the first rectangular block 6 and the second rectangular block 7 through the threaded sleeve 9 and the guide sleeve 11.

[0021] During specific use, the operator first rotates the bidirectional threaded rod 8. Under the action of the bidirectional thread, the threaded sleeve 9 will move in opposite directions along the thread track on the surface of the bidirectional threaded rod 8. Subsequently, the threaded sleeve 9带动与之相连的限位块12也相互远离,与此同时,导向套11会沿着导向杆10的表面平稳滑动,确保限位块12的移动方向准确且稳定,当限位块12从支撑板5的表面移开后,操作人员便可将支撑板5拉开,接着,反转双向螺纹杆8,使两个限位块12相互靠近,直至限位块12紧密抵靠在支撑板5的侧壁,从而将支撑板5固定在合适位置,这样,当携带便携式农药残留检测仪至户外开展检测工作时,可将滴管、手套等辅助设备放置在支撑板5上,相较于将辅助设备直接放置在地面,此方式能有效避免辅助设备受到地面灰尘、杂物、细菌等污染,进而保障检测过程中辅助设备的洁净度,最终确保检测结果的准确性,为菊酯农药残留检测工作提供可靠支持。

[0022] It should be noted that after use on the support plate 5, it is pushed into the interior of the box body 1. Subsequently, the bidirectional threaded rod 8 is reversed to make the two limiting blocks 12 approach each other until the limiting block 12 tightly abuts against the front end of the support plate 5. In this way, the stability of the support plate 5 after being inserted into the box body 1 can be ensured.

[0023] It seems there is an incomplete part in the Chinese text of . I have translated it as accurately as possible based on the existing content. If you can provide the complete text, I can further optimize the translation.Preferably, a protective cover 13 is inserted into the top of the side wall of the housing 1 away from the support plate 5. A slider 15 is connected to the bottom end of the protective cover 13. A groove 14 adapted to the slider 15 is opened at the top of the outer shell of the detection mechanism 3. The protective cover 13 can be slidably connected to the outer shell of the detection mechanism 3 through the slider 15 and the groove 14. A positioning block 16 is connected to the side wall of the protective cover 13, and a fixing block 17 is connected to the side wall of the housing 1. A spring 18 is installed inside the fixing block 17, and a limit plate 19 is connected to the top of the spring 18. The limit plate 19 can be elastically telescopically connected to the fixing block 17 through the spring 18.

[0024] In practical use, the operator presses down on the limiting plate 19. Under the applied pressure, the spring 18 is squeezed and deformed. At this time, the limiting plate 19 is tightly attached to the top of the fixing block 17. Then, the operator pinches the positioning block 16 and pulls the protective cover 13 outward. The protective cover 13 drives the connected slider 15 to slide smoothly along the slide groove 14, thereby easily pulling the protective cover 13 open and exposing the detection port 4. In this way, the operator can easily and accurately insert the container containing the liquid to be tested into the detection port 4 to carry out subsequent testing work.

[0025] When not conducting tests, the protective cover 13 will shield the detection port 4, forming an effective protective barrier. This significantly reduces the possibility of external impurities, such as dust, debris, and fine particles, falling into the detection port 4, preventing these impurities from interfering with the testing process. This ensures the cleanliness of the testing environment, guarantees the accuracy and reliability of the test results, and provides strong support for the normal use and accurate detection of the portable pesticide residue detector.

[0026] Working principle: When carrying the portable pesticide residue detector outdoors for testing, first place the detector on the ground. Then, the operator slowly rotates the bidirectional threaded rod 8. At this time, the threaded sleeve 9 will move smoothly in a direction away from each other along the threaded trajectory on the surface of the bidirectional threaded rod 8. Subsequently, the limiting block 12, which is closely connected to the threaded sleeve 9, will also move away from each other under the action of the threaded sleeve 9. At the same time, the guide sleeve 11 slides smoothly along the surface of the guide rod 10, providing precise guidance for the movement of the limiting block 12, ensuring that its movement direction is accurate and its state is stable. After the limiting block 12 is completely removed from the surface of the support plate 5, the operator can easily pull the support plate 5 open.

[0027] Next, the operator reverses the bidirectional threaded rod 8, causing the two limiting blocks 12 to gradually approach each other until the limiting blocks 12 are tightly pressed against the side wall of the support plate 5, thereby firmly fixing the support plate 5 in the appropriate position.

[0028] In this way, when conducting testing outdoors, auxiliary equipment such as droppers and gloves can be neatly placed on the support plate 5. Compared with placing the auxiliary equipment directly on the ground, this method can effectively avoid the auxiliary equipment from being contaminated by ground dust, debris, bacteria, etc., and effectively ensure the cleanliness of the auxiliary equipment during the testing process. Ultimately, this ensures the accuracy and reliability of the test results, providing a solid and reliable guarantee for the smooth conduct of pyrethroid pesticide residue testing.

[0029] Next, the operator presses down on the limiting plate 19. Under the pressure, the spring 18 is squeezed and deforms. At this time, the limiting plate 19 will fit tightly against the top of the fixing block 17. Then, the operator pinches the positioning block 16 and pulls the protective cover 13 outward. The protective cover 13 will drive the slider 15 connected to it to move smoothly along the slide groove 14, thereby easily pulling the protective cover 13 open and exposing the detection port 4.

[0030] This makes it easy to accurately insert the container containing the test solution into the detection port 4. Then, the detection program is started through the control panel on the detection mechanism 3 to detect pyrethroid pesticide residues.

[0031] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable pesticide residue detector, comprising a housing (1) and a cover (2) rotatably connected to the back of the housing (1) via a hinge, characterized in that: A detection mechanism (3) is installed inside the box body (1). The top shell of the detection mechanism (3) is connected to a detection port (4), and a support plate (5) is inserted into the side wall of the box body (1). A first rectangular block (6) is connected to the side wall of the box body (1), and a second rectangular block (7) is connected to the side wall of the box body (1). A bidirectional threaded rod (8) is rotatably connected inside the first rectangular block (6) through a bearing. A threaded sleeve (9) is threadedly connected to the surface of the bidirectional threaded rod (8). A guide rod (10) is installed inside the second rectangular block (7). A guide sleeve (11) is sleeved on the surface of the guide rod (10). A limiting block (12) is connected between the threaded sleeve (9) and the guide sleeve (11).

2. The portable pesticide residue detector according to claim 1, characterized in that: The limiting block (12) is in an "L" shape, and the inner wall of the limiting block (12) is in contact with the front end of the support plate (5).

3. The portable pesticide residue detector according to claim 1, characterized in that: The threaded sleeve (9) has the same opening size as the first rectangular block (6), and the guide sleeve (11) has the same opening size as the second rectangular block (7).

4. The portable pesticide residue detector according to claim 1, characterized in that: The limiting block (12) is slidably connected between the first rectangular block (6) and the second rectangular block (7) through the threaded sleeve (9) and the guide sleeve (11).

5. The portable pesticide residue detector according to claim 1, characterized in that: A protective cover (13) is inserted into the top of the side wall of the box body (1) far from the support plate (5). A slider (15) is connected to the bottom end of the protective cover (13). A chute (14) adapted to the slider (15) is opened at the top of the outer shell of the detection mechanism (3). The protective cover (13) is slidably connected to the outer shell of the detection mechanism (3) through the slider (15) and the chute (14).

6. The portable pesticide residue detector according to claim 5, characterized in that: A positioning block (16) is connected to the side wall of the protective cover (13), and a fixing block (17) is connected to the side wall of the box body (1). A spring (18) is installed inside the fixing block (17), and a limiting plate (19) is connected to the top end of the spring (18).

7. The portable pesticide residue detector according to claim 6, characterized in that: The limiting plate (19) is elastically telescopically connected to the fixing block (17) through the spring (18).

Images