Colloidal gold test paper card for pesticide residue

Abstract

The utility model discloses an agricultural drug residue colloidal gold detection test paper card, which comprises an upper shell, a lower shell, an upper cover and a lower cover, the lower shell is mounted at the bottom of the upper shell; the first rotating rod and the second rotating rod are symmetrically and rotationally connected to the two sides of the lower shell. The head end of the connecting belt is fixed to the second rotating rod and wound on the second rotating rod, and the tail end of the connecting belt is fixedly connected to the first rotating rod; the plurality of test strips are fixed on the connecting band in a linear array manner; the first shifting wheel is coaxially and fixedly connected to the first rotating rod. According to the device, multiple groups of to-be-detected liquid can be continuously detected, the use of a clamping shell is saved, the resource utilization rate is improved on the whole, and multiple detection tests can be conveniently carried out.

Description

Technical Field

[0001] The present application relates to the technical field of pesticide residue detection, and in particular to a colloidal gold test paper card for pesticide residue detection. Background Art

[0002] Colloidal gold test paper cards are rapid detection products that can achieve quantitative and semi-quantitative detection of various analytes such as antigens, antibodies and haptens without the need for professional skills or expensive and complex instruments and equipment. Colloidal gold test cards used for pesticide residue detection use colloidal gold immunochromatography technology to quickly detect pesticide residues such as chlorothalonil, thiamethoxam, imidacloprid, chlorpyrifos, cypermethrin, acetamiprid, carbendazim and triazophos in vegetables and fruits.

[0003] However, current colloidal gold test cards are generally disposable cards, which generally include a card shell and a test strip. The card shell and the test strip are discarded after use. When multiple groups need to be tested, multiple test cards need to be used, which is not only troublesome but also wastes resources.

[0004] Application Contents

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of this application is to provide a colloidal gold test paper card for pesticide residue detection, which can continuously detect multiple groups of test liquids and save the use of card shells. Overall, it not only improves resource utilization but also facilitates multiple detection tests.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A colloidal gold test paper card for detecting pesticide residues, comprising:

[0008] an upper shell, the upper shell having a dot card window and a contrast window;

[0009] Lower shell, installed on the bottom of the upper shell;

[0010] The first rotating rod and the second rotating rod are symmetrically connected to the two sides of the lower shell;

[0011] A connecting belt, the head end of which is fixed to and wound on the second rotating rod, and the tail end of which is fixed to the first rotating rod;

[0012] A plurality of test strips are fixed on the connecting belt in a linear array;

[0013] The first shifting wheel is coaxially fixed to the first rotating rod.

[0014] Compared with the prior art, the beneficial effect of the present application is that the first rotating rod is driven to rotate by the first toggle wheel, thereby driving the connecting belt to move, so that the tested test strip is moved toward the first rotating rod and wound, and at the same time, the movement of the connecting belt will also drive the unused test strip to move to the detection area. This not only saves the use of test paper cards, but also can continuously detect multiple groups of test liquids. Overall, it not only improves resource utilization but also facilitates multiple detection tests.

[0015] Preferably, a plurality of guide support rods are fixed to the lower shell in a linear array, and the plurality of guide support rods are located between the first rotating rod and the second rotating rod. The distance between the guide support rods and the upper cover is equal to the thickness of the test strip and the connecting belt.

[0016] Preferably, a plurality of soft brush pads are bonded to the connecting belt, and the soft brush pads and the test strips are alternately distributed on the connecting belt.

[0017] Preferably, the second shifting wheel is coaxially fixed to the second rotating rod.

[0018] Preferably, the upper shell is provided with a wheel groove, the lower shell is provided with an isolation plate, the first toggle wheel and the second toggle wheel both extend out of the top surface of the upper shell through the wheel groove, and the first toggle wheel and the second toggle wheel are located between the isolation plate and the inner side wall of the lower shell.

[0019] Preferably, anti-slip grooves are provided on the circumferential sides of the first toggle wheel and the second toggle wheel.

[0020] Preferably, slide bars are fixedly connected to both sides of the lower shell, and a protective cover is installed on the top of the upper shell, and the protective cover is slidably connected to the slide bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 An exploded schematic diagram of the overall structure of this application;

[0023] Figure 3 It is a cross-sectional schematic diagram of the overall structure of this application.

[0024] In the picture:

[0025] 100, upper shell; 101, card window; 102, comparison window; 103, wheel groove; 200, lower shell; 300, first rotating rod; 301, first toggle wheel; 400, second rotating rod; 401, second toggle wheel; 500, connecting belt; 501, test strip; 502, soft brush pad; 600, guide support rod; 700, isolation plate; 800, anti-slip groove; 900, slide bar; 901, protective cover. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] First, to facilitate a clearer understanding of the original intention of this application, it is necessary to introduce the test strip 501 here. The test strip 501 includes a sample pad, a conjugate pad, and a water absorbent pad from the front end to the back end. The sample pad is located at the front end and is the location where the sample to be tested is added; the conjugate pad contains colloidal gold particles labeled with antibodies or antigens. The function of the conjugate pad is that when the sample flows through the conjugate pad, the analyte and the colloidal gold-labeled substance undergo specific binding to form a complex; the water absorbent pad is located at the end of the test strip 501. Its function is to absorb excess liquid through capillary action, allowing the liquid to flow smoothly forward on the test strip 501, ensuring the smooth progress of the detection process. A nitrocellulose membrane (NC membrane) is provided on the conjugate pad. The NC membrane includes a test line (T line) and a quality control line (C line). Among them, the T line can fix specific antibodies or antigens that can bind to the analyte. When the test solution containing the analyte flows to the T line, it will specifically bind to the substance on the T line, forming a color reaction visible to the naked eye. If a red or purple-red strip appears, it indicates that the analyte is present in the sample. The C line can fix substances that can bind to antibodies or antigens labeled with colloidal gold. Whether the C line is colored can also determine whether the test paper card is working properly. Regardless of whether the analyte is in the sample, as long as the test paper card is valid, when the liquid flows through the quality control line, the colloidal gold-labeled substance will bind to the substance on the quality control line to form a color strip.

[0028] Secondly, the color development results are judged as follows: if the color of the T line is darker than or equal to the color of the C line, the result is negative, which means it is qualified; on the contrary, if the color of the T line is lighter than the color of the C line or the T line does not show color, the result is positive, which means it is unqualified; furthermore, if only the T line shows color or both the T line and the C line do not show color, it means that the test is invalid.

[0029] Please refer to Figures 1 to 3The present embodiment provides a colloidal gold test paper card for detecting pesticide residues, comprising: an upper shell 100 having a card spot window 101 for dripping a test solution and a comparison window 102 for viewing a color development status; a lower shell 200 mounted at the bottom of the upper shell 100, with a first rotating rod 300 and a second rotating rod 400 symmetrically connected to each other on both sides of the lower shell 200 for rotation, wherein the head end of a connecting belt 500 is fixed to the second rotating rod 400 and wound on the second rotating rod 400, and the end of the connecting belt 500 passes under the comparison window 102 and the card spot window 101 after winding and is fixed to the first rotating rod 300, a plurality of test strips 501 are fixed on the connecting belt 500 in a linear array, and a first toggle wheel 301 for toggling the first rotating rod 300 is coaxially fixed to the upper portion of the first rotating rod 300.

[0030] The following is a further introduction in conjunction with specific usage scenarios. First, it should be noted during installation that the test strip 501 is fixed on the connecting belt 500 in a certain direction: in the direction from the first rotating rod 300 to the second rotating rod 400, the test strip 501 is respectively a sample pad, a conjugation pad and a water-absorbing pad. When the sample pad of the test strip 501 is located below the sample spotting window, the conjugation pad should be located below the comparison window 102, and the T line and C line can be displayed below the comparison window.

[0031] During testing, the first rotating rod 300 is controlled to rotate by the first toggle wheel 301, thereby pulling the connecting belt 500, further driving the test strip 501 to move. When the test strip 501 moves to the testing area, the sample solution to be tested is dropped on the spot card window 101, and then after a certain period of rest, the color results of the T line and the C line on the window 102 are compared to determine whether the sample is qualified. After the first test is completed, if further testing is required, or the experimenter needs to make an accurate judgment based on multiple sets of test data, then it is only necessary to continue to rotate the first toggle wheel 301 to control the first rotating rod 300 to continue rotating, and then the tested test strip 501 is rolled up on the first rotating rod 300, and the unused test strip 501 at the back is moved to the testing area as the connecting belt 500 moves.

[0032] The present application drives the first rotating rod 300 to rotate by the first toggle wheel, thereby driving the connecting belt 500 to move, so that the tested test strip 501 moves to the first rotating rod 300 and is wound. At the same time, the movement of the connecting belt 500 also drives the unused test strip 501 to move to the testing area. This not only saves the use of test paper cards, but also enables continuous testing of multiple groups of test liquids, which not only improves resource utilization as a whole but also facilitates multiple testing experiments.

[0033] Reference Figure 2 and Figure 3As a specific implementation of an embodiment of the present application, a plurality of guide support rods 600 are rotatably connected in the lower shell 200, and the guide support rods 600 are distributed in a linear array. The plurality of guide support rods 600 are located between the first rotating rod 300 and the second rotating rod 400, and the distance between the guide support rods 600 and the upper cover is equal to the thickness of the test strip 501 and the connecting belt 500.

[0034] In combination with specific usage scenarios, by setting up a guide support rod 600, it can ensure that the test strip 501 below the detection area can be close to the bottom surface of the lower shell 200, ensuring that the placement state of the test strip 501 will not tilt, and can provide relatively stable support for the test strip 501 and the connecting belt 500 as a whole.

[0035] Reference Figure 2 and Figure 3 As a specific implementation of an embodiment of the present application, a plurality of soft brush pads 502 are bonded to the connecting belt 500, and the soft brush pads 502 and the test strips 501 are alternately distributed on the connecting belt 500.

[0036] In combination with specific usage scenarios, since the test liquid on the test strip 501 may stick to the bottom surface of the lower shell 200, thereby affecting subsequent detection, the soft brush pad 502 can be used to promptly wipe off the test liquid that has stuck to the bottom surface of the lower shell 200 during the previous detection process, thereby improving the accuracy of subsequent detection.

[0037] Reference Figures 1 to 3 As a specific implementation of the embodiment of the present application, a second shifting wheel 401 is coaxially fixedly connected to the second rotating rod 400.

[0038] Furthermore, a wheel groove 103 is opened in the upper shell 100, and an isolation plate 700 is provided in the lower shell 200. The first toggle wheel 301 and the second toggle wheel 401 both extend out of the top surface of the upper shell 100 through the wheel groove 103. The first toggle wheel 301 and the second toggle wheel 401 are located between the isolation plate 700 and the inner side wall of the lower shell 200.

[0039] Furthermore, anti-slip grooves 800 are provided on the circumferential sides of the first toggle wheel 301 and the second toggle wheel 401 .

[0040] In view of the specific usage scenario, by providing a second toggle wheel 401 on the second rotating rod 400, if the experimenter accidentally moves the test strip 501 too far, the second toggle wheel 401 can be used to control the connecting belt 500 to move in the opposite direction, thereby returning the test strip 501 to the correct position, thereby improving the overall reliability of the test strip card. The wheel groove 103 is provided on the upper shell 100 to ensure that the first toggle wheel 301 and the second toggle wheel 401 are both located in the container formed by the upper shell 100 and the lower shell 200, which can make the overall appearance of the test strip card more beautiful; however, the provision of the wheel groove 103 may cause external dust and impurities to enter the shell of the test strip card through the wheel groove 103. By providing an isolation plate 700, the spatial sealing between the test strip card and the connecting belt 500 can be better ensured.

[0041] Reference Figures 1 to 3 As a specific implementation of the embodiment of the present application, slide bars 900 are fixed on both sides of the lower shell 200, a protective cover 901 is installed on the top of the upper shell 100, and the protective cover 901 is slidably connected to the slide bars 900.

[0042] In combination with specific usage scenarios, a protective cover 901 is set up and pushed away from the detection area during the test to expose the point card window 101 and the comparison window 102. After a detection test is completed, the point card window 101 and the comparison window 102 can be covered by the protective cover 901 to prevent the test paper card from falling to the ground or being contaminated by other liquids, thereby ensuring the reliability of the test paper card.

[0043] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be included in this application.

Claims

1. A colloidal gold test paper card for pesticide residue detection, characterized in that: include: An upper shell (100), wherein the upper shell (100) has a dot card window (101) and a contrast window (102); A lower shell (200) is mounted on the bottom of the upper shell (100); The first rotating rod (300) and the second rotating rod (400) are symmetrically connected to both sides of the lower shell (200); A connecting belt (500), the head end of which is fixed to the second rotating rod (400) and wound on the second rotating rod (400), and the end of the connecting belt (500) is fixed to the first rotating rod (300); A plurality of test strips (501) are fixed on the connecting belt (500) in a linear array; The first shifting wheel (301) is coaxially fixed to the first rotating rod (300).

2. The colloidal gold test paper card for pesticide residue detection according to claim 1, characterized in that: A plurality of guide support rods (600) are fixed to the lower shell (200) in a linear array, and the plurality of guide support rods (600) are located between the first rotating rod (300) and the second rotating rod (400).

3. The colloidal gold test paper card for pesticide residue detection according to claim 1, characterized in that: A plurality of soft bristle pads (502) are bonded to the connecting belt (500), and the soft bristle pads (502) and the test strips (501) are alternately distributed on the connecting belt (500).

4. The colloidal gold test paper card for pesticide residue detection according to claim 1, characterized in that: The second shifting wheel (401) is coaxially fixed to the second rotating rod (400).

5. The colloidal gold test paper card for pesticide residue detection according to claim 4, characterized in that: The upper shell (100) is provided with a wheel groove (103), and the lower shell (200) is provided with an isolation plate (700). The first toggle wheel (301) and the second toggle wheel (401) both extend out of the top surface of the upper shell (100) through the wheel groove (103). The first toggle wheel (301) and the second toggle wheel (401) are located between the isolation plate (700) and the inner side wall of the lower shell (200).

6. The colloidal gold test paper card for pesticide residue detection according to claim 5, characterized in that: Anti-slip grooves (800) are provided on the peripheral sides of the first toggle wheel (301) and the second toggle wheel (401).

7. The colloidal gold test paper card for pesticide residue detection according to claim 1, characterized in that: Slide bars (900) are fixedly connected to both sides of the lower shell (200), and a protective cover (901) is installed on the top of the upper shell (100), and the protective cover (901) is slidably connected to the slide bars (900).

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