A kit with rapid detection function

Abstract

The utility model relates to the technical field of detection kits, and discloses a test kit with a rapid detection function, including three test kit bodies and a test kit cover, wherein the test kit cover is hingedly connected to one side edge of the upper surface of the three test kit bodies; the test kit cover includes a box cover shell, a connecting shaft, two slide rails and a standard colorimetric card, and the three test kit bodies each include a test kit body, a reaction chamber, two reagent chambers, five label slots, a first card slot, a second card slot, a main dropper and a spare dropper, and the reaction chamber includes a screw cap, a reaction slot, a storage slot and a detection reagent, and the two reagent chambers each include a nozzle, a spherical reagent, a slide tube and an air chamber. In the utility model, the test kit arranges the reaction chamber and the reagent chamber inside the test kit, and encapsulates the used reagents with a water-soluble polyvinyl alcohol film according to a single-use dose, which not only reduces the use of experimental equipment, but also simplifies the detection operation, improves work efficiency and saves manpower and material resources.

Description

Technical Field

[0001] The utility model relates to the technical field of detection kits, in particular to a kit with a rapid detection function. Background Art

[0002] Total nitrogen, as an important member of the water quality index system, refers to the sum of the nitrogen content of all nitrogen-containing compounds in soluble and suspended particles in the water body, covering the nitrogen elements in inorganic nitrogen-containing compounds and organic nitrogen-containing compounds. These nitrogen-containing compounds mainly come from agricultural discharge, industrial wastewater and domestic sewage, and have a significant impact on water quality. When the total nitrogen content in the water body is too high, it often causes water eutrophication problems, which not only destroys the ecological balance of the water body, but also may cause water hypoxia, posing a threat to the survival of aquatic organisms. Accurate monitoring and effective control of the total nitrogen content in the water body are of great significance for maintaining healthy water quality. In laboratory environments, alkaline potassium persulfate ultraviolet spectrophotometry or gas phase molecular absorption spectroscopy are usually used to determine the total nitrogen content in water. Although these methods have high accuracy, the operation process is relatively complicated and time-consuming. This limits its application in on-site rapid detection to a certain extent. At present, there is still a lack of kits on the market that can analyze and quickly detect the total nitrogen content in water on site.

[0003] After searching, the existing patent (publication number: CN208520874U) discloses a "rapid detection kit, belonging to the technical field of detection kits. It includes a box body; one edge of the opening of the box body is connected to one edge of the opening of the box cover by a hinge; the box body and the box cover are both provided with an interlayer, and thermal insulation foam is installed in the interlayer; a partition is compounded in the box body; the partition divides the inner cavity of the box body into cavity A and cavity B; a drawer is placed in cavity A; a shelf is placed in cavity B; a first reagent tank, a second reagent tank, a third reagent tank, a reaction tank, and a test paper port are arranged on one side of the shelf from left to right. The utility model is made of plastic plates for the box body and the box cover, which can be reused, increases its service life, and effectively reduces the waste of resources; the box body and the box cover are both provided with an interlayer, and thermal insulation foam is installed in the interlayer to increase its thermal insulation effect."

[0004] Although this patented technology avoids the use of independent reaction vessels by providing a reaction tank as a reaction container in the test kit, there is a problem of using medicine bottles to store reagents and then putting them into the reagent tank for storage, which increases the weight of the test kit and the number of steps for taking out the reagents. Therefore, those skilled in the art provide a test kit with a rapid detection function to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art of using medicine bottles to store reagents and then putting them into reagent tanks for storage, which leads to an increase in the weight of the reagent kit and the number of steps required to take out the reagents. The utility model proposes a reagent kit with a rapid detection function. The reaction chamber and the reagent chamber are arranged inside the reagent kit, and the reagents used are packaged with a water-soluble polyvinyl alcohol film according to a single-use dose, which not only reduces the use of experimental equipment, but also simplifies the detection operation, improves work efficiency, and saves manpower and material resources.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A test kit with a rapid detection function, comprising three test kit bodies and a test kit cover, wherein the test kit cover is hingedly connected to one side edge of the upper surface of the three test kit bodies; the test kit cover comprises a box cover shell, a connecting shaft, two slide rails and a standard colorimetric card, the three test kit bodies each comprise a test kit body, a reaction chamber, two reagent chambers, five label slots, a first card slot, a second card slot, a main dropper and a spare dropper, the reaction chamber comprises a screw cap, a reaction slot, a storage slot and a detection reagent, and the two reagent chambers each comprise a nozzle, a spherical reagent, a slide tube and an air chamber;

[0008] Through the above technical solution, the standard colorimetric card is slidably arranged between the two slide rails on the inner surface of the box cover shell, and the side of the slide rail fixedly arranged in the middle position of the inner surface of the box cover shell away from the standard colorimetric card can be printed with instructions for use according to actual needs. The reaction chamber and the two reagent chambers are fixedly arranged inside the test kit body, which reduces the use of experimental instruments and facilitates unified processing.

[0009] Furthermore, the reagent box cover is hingedly connected to the three reagent box bodies through a connecting shaft, the connecting shaft is fixedly connected to one side edge of the box cover shell, the two slide rails are respectively fixedly arranged at the middle of the inner surface of the box cover shell and one side close to the connecting shaft, and the standard colorimetric card is slidably connected to the two slide rails;

[0010] Through the above technical solution, the reagent box cover provides good protection for the three reagent box bodies when closed, and during use, according to actual needs, the standard colorimetric card can slide smoothly between the two slide rails to compare with the detection color development results in the reaction chamber inside the reagent box body.

[0011] Furthermore, the surface material of the test kit body is made of polypropylene material and filled with hygroscopic sponge inside, the reaction chamber, the two reagent chambers, the label slot, the first card slot and the second card slot are made of polypropylene material, the main dropper is connected to the inside of the first card slot by snap-fitting, the spare dropper is connected to the inside of the second card slot by snap-fitting, and the main dropper and the spare dropper are made of translucent polypropylene material and are marked with scales;

[0012] Through the above technical solution, the polypropylene material has good chemical tolerance, high thermal stability and moderate price. The spare dropper is used as a substitute when the main dropper cannot be used due to improper operation or other reasons due to damage or contamination, thereby improving the fault tolerance of the operation of the test kit. The main dropper and the spare dropper are made of translucent polypropylene material with scales, which makes it easy for users to take the sample to be tested more accurately.

[0013] Furthermore, the screw cap is threadedly sleeved on the reaction tank, the storage tank is opened at the center of the bottom of the reaction tank, the detection reagent is stored inside the storage tank, the detection reagent is a mixed solid of potassium persulfate and sodium hydroxide in a ratio of six to one, and the detection reagent is wrapped with a water-soluble polyvinyl alcohol film;

[0014] Through the above technical solution, the detection reagent in the reaction chamber can be prevented from being contaminated when the screw cap is tightened. When in use, potassium persulfate is dissolved in the water sample and then left to stand for thirty minutes to allow all forms of nitrogen to be oxidized to nitrates while sodium hydroxide provides an alkaline environment. The water-soluble polyvinyl alcohol film used in the detection reagent has a good protective effect on the detection reagent and does not affect the detection results.

[0015] Furthermore, the nozzle is connected to one end of the slide tube by snap-fitting, the air chamber is fixedly connected to the other end of the slide tube, the spherical reagent is slidably arranged inside the slide tube, the spherical reagents inside the two reagent chambers are respectively made of a mixed solid of phenol disulfonic acid and sodium nitrite in a ratio of one to one and a potassium phosphate solid, and the spherical reagent is wrapped with a water-soluble polyvinyl alcohol film;

[0016] Through the above technical scheme, after the detection reagent and the water sample are fully reacted, the nozzle of one reagent chamber is removed, and phenol disulfonic acid and sodium nitrite slide out of the inclined slide tube under the action of gravity and enter the reaction tank to produce a color reaction, and then the nozzle of the other reagent chamber is removed, and potassium phosphate slides out of the inclined slide tube under the action of gravity and enters the reaction tank to ensure that the pH of the adjusted solution is neutral. The water-soluble polyvinyl alcohol film used in the spherical reagent has a good protective effect on the spherical reagent and does not affect the detection result. According to actual needs, the air chamber can be pressed to assist the spherical reagent to slide out of the slide tube and enter the reaction tank.

[0017] Furthermore, the two reagent chambers are axially symmetrically arranged on one side of the reagent chamber inside the reagent chamber body, and the nozzle is fixedly connected to the reaction tank through the nozzle;

[0018] Through the above technical solution, after the nozzle is removed, the spherical reagent slides out of the sliding tube into the reaction tank under the action of gravity.

[0019] Furthermore, the three reagent kit bodies are mutually connected by snapping in pairs along the axial direction of the connecting shaft;

[0020] Through the above technical solution, the three test kits can not only meet the demand of taking average values ​​of multiple samples in one experiment to reduce errors, but also provide users with the freedom to choose single or multiple sampling tests.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a test kit with a rapid detection function. The test kit is hingedly connected to the edge of one side of the upper surface of the three test kit bodies, and a slide rail is fixedly arranged in the middle of the inner surface of the box cover shell, and the standard colorimetric card is slidably arranged between the two slide rails. Not only does it provide good protection for the test kit body when closed, but it also allows the standard colorimetric card to slide smoothly when in use, so that the user can easily compare the detection color development results with those in the reaction chamber inside the test kit when comparing colors. The integrated design of the test kit body reduces the use of experimental equipment, facilitates unified processing, and improves the convenience and accuracy of the detection operation.

[0023] 2. The utility model proposes a test kit with a rapid detection function. The design of the reaction chamber and two reagent chambers of the test kit effectively improves the reaction rate and release control of the reagent. The reaction chamber is sealed with a screw cap to ensure that the detection reagent will not be contaminated before use. The detection reagent adopts a mixed solid of potassium persulfate and sodium hydroxide in a ratio of six to one, and is wrapped by a water-soluble polyvinyl alcohol film to ensure the stability and rapid dissolution of the reagent. The spherical reagents in the two reagent chambers are a mixture of phenol disulfonic acid and sodium nitrite and a potassium phosphate solid, respectively, which are also wrapped with a water-soluble polyvinyl alcohol film and assisted by gravity or pressing the air chamber to release, ensuring the effective release and full reaction of the reagent, thereby ensuring the accuracy of the test results.

[0024] 3. The utility model proposes a test kit with a rapid detection function. The main structural parts of the test kit are made of polypropylene material, including the test kit body, reaction chamber, reagent chamber, etc., and have good chemical tolerance, high thermal stability and moderate cost. The hygroscopic sponge filled inside helps to keep the interior dry and protect the reagents from moisture. The main dropper and the spare dropper are made of translucent polypropylene material and are marked with scales, which is convenient for users to accurately sample and improve the fault tolerance of the operation. The overall design not only ensures the durability of the material and the stability of the reagents, but also improves the convenience and accuracy of the user in the detection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric schematic diagram of the utility model;

[0026] Figure 2 It is a top view schematic diagram of the utility model;

[0027] Figure 3 It is a front cross-sectional schematic diagram of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the reagent chamber in the utility model.

[0029] Legend:

[0030] 1. Test kit body; 2. Test kit cover; 101. Test kit body; 102. Reaction chamber; 103. Reagent chamber; 104. Label slot; 105. First card slot; 106. Second card slot; 107. Main dropper; 108. Spare dropper; 201. Box cover shell; 202. Connecting shaft; 203. Slide rail; 204. Standard colorimetric card; 10201. Screw cap; 10202. Reaction tank; 10203. Storage tank; 10204. Detection reagent; 10301. Nozzle; 10302. Spherical reagent; 10303. Slide tube; 10304. Gas chamber. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4 , an embodiment of the utility model: a reagent kit with a rapid detection function, comprising three reagent kit bodies 1 and a reagent kit cover 2, the reagent kit cover 2 is hingedly connected to the edge of one side of the upper surface of the three reagent kit bodies 1, the reagent kit cover 2 comprises a box cover shell 201, a connecting shaft 202, two slide rails 203 and a standard colorimetric card 204, the three reagent kit bodies 1 each comprise a reagent kit body 101, a reaction chamber 102, two reagent chambers 103, five label slots 104, a first card slot 105, a second card slot 106, a main dropper 107 and a spare dropper 108, the reaction chamber 102 comprises a screw cap 10201, a reaction slot 10202, a storage slot 10203 and a detection reagent 10204, and the two reagent chambers 103 each comprise a nozzle 10301, a spherical reagent 10302, a slide tube 10303 and an air chamber 10304.

[0033] The surface material of the test kit body 101 is made of polypropylene material and is filled with hygroscopic sponge inside. The reaction chamber 102, the two reagent chambers 103, the label slot 104, the first card slot 105 and the second card slot 106 are made of polypropylene material. The main dropper 107 is connected to the inside of the first card slot 105 by snapping, and the spare dropper 108 is connected to the inside of the second card slot 106 by snapping. The main dropper 107 and the spare dropper 108 are made of translucent polypropylene material and are marked with scales. The polypropylene material has good chemical tolerance, high thermal stability and moderate price. The spare dropper 108 is used as a substitute when the main dropper 107 is damaged or contaminated due to improper operation or other reasons and cannot be used, thereby improving the fault tolerance of the use operation of the test kit. The main dropper 107 and the spare dropper 108 are made of translucent polypropylene material marked with scales, which is convenient for users to take the sample to be tested more accurately. The three reagent box bodies 1 are mutually connected in pairs along the axial direction of the connecting shaft 202. The three reagent box bodies 1 can not only meet the demand of taking average values ​​for multiple sampling in one experiment to reduce errors, but also provide users with the freedom to choose single or multiple sampling tests.

[0034] The screw cap 10201 is threadedly sleeved on the reaction tank 10202, and the storage tank 10203 is opened at the bottom center of the reaction tank 10202. The detection reagent 10204 is stored inside the storage tank 10203. The detection reagent 10204 is a mixed solid of potassium persulfate and sodium hydroxide in a ratio of six to one. The detection reagent 10204 is wrapped with a water-soluble polyvinyl alcohol film. When the screw cap 10201 is tightened, the detection reagent 10204 in the reaction chamber 102 can be prevented from being contaminated. When in use, potassium persulfate is dissolved in the water sample and then left to stand for thirty minutes to allow all forms of nitrogen to be oxidized to nitrates and sodium hydroxide to provide an alkaline environment. The water-soluble polyvinyl alcohol film used in the detection reagent 10204 has a good protective effect on the detection reagent 10204 and does not affect the test results.

[0035] The nozzle 10301 is snap-connected to one end of the sliding tube 10303, the air chamber 10304 is fixedly connected to the other end of the sliding tube 10303, and the spherical reagent 10302 is slidably set inside the sliding tube 10303. The spherical reagent 10302 inside the two reagent chambers 103 respectively adopts a mixed solid of phenol disulfonic acid and sodium nitrite in a one-to-one ratio and potassium phosphate solid, and the spherical reagent 10302 is wrapped with a water-soluble polyvinyl alcohol film. After the detection reagent 10204 fully reacts with the water sample, the nozzle 10301 of one reagent chamber 103 is removed, and phenol disulfonic acid and sodium nitrite slide out of the inclined sliding tube 10303 under the action of gravity and enter the reaction tank 10202 to undergo a color reaction.

[0036] Then remove the nozzle 10301 of the other reagent chamber 103, and the potassium phosphate slides out of the inclined slide tube 10303 under the action of gravity and enters the reaction tank 10202 to ensure that the pH of the adjusted solution is neutral. The water-soluble polyvinyl alcohol film used in the spherical reagent 10302 has a good protective effect on the spherical reagent 10302 and does not affect the test results. According to actual needs, the air chamber 10304 can be pressed to assist the spherical reagent 10302 to slide out of the slide tube 10303 and enter the reaction tank 10202. The two reagent chambers 103 are axially symmetrically inclined and arranged on the side of the reaction chamber 102 inside the reagent box body 101. The nozzle 10301 is fixedly connected to the reaction tank 10202. After removing the nozzle 10301, the spherical reagent 10302 slides out of the slide tube 10303 under the action of gravity and enters the reaction tank 10202.

[0037] The slide rail 203 fixedly arranged in the middle of the inner surface of the box cover shell 201 and away from the side of the standard colorimetric card 204 can be printed with instructions for use according to actual needs. The reaction chamber 102 and the two reagent chambers 103 are fixedly arranged inside the reagent box body 1, reducing the use of experimental instruments and facilitating unified processing.

[0038] The reagent box cover 2 is hingedly connected to the three reagent box bodies 1 through a connecting shaft 202. The reagent box cover 2 provides good protection for the three reagent box bodies 1 when closed. The connecting shaft 202 is fixedly connected to one side edge of the box cover shell 201. Two slide rails 203 are respectively fixedly arranged in the middle of the inner surface of the box cover shell 201 and on one side close to the connecting shaft 202. The standard colorimetric card 204 is slidably arranged between the two slide rails 203 on the inner surface of the box cover shell 201. During use, according to actual needs, the standard colorimetric card 204 can slide smoothly between the two slide rails 203 so as to be compared with the detection color development results in the reaction chamber 102 inside the reagent box body 1.

[0039] This rapid test kit achieves efficient and relatively accurate on-site detection of total nitrogen in water quality through integrated design and simple operation, while being cost-effective and environmentally friendly. In addition, according to actual needs, users can also use experimental methods such as heating or ultrasound to accelerate the digestion of potassium persulfate in an alkaline environment, or use an ultraviolet spectrophotometer to measure the absorbance of the generated colored compounds at a specific wavelength, and calculate a more accurate total nitrogen concentration based on the calibration curve.

[0040] Working principle: The kit realizes an integrated design by hingedly connecting the kit cover 2 to the edge of one side of the upper surface of the three kit bodies 1 and fixing the reaction chamber 102 and the reagent chamber 103 inside the kit body 1. A slide rail 203 is provided inside the kit cover 2, and a standard colorimetric card 204 is slidably arranged between the slide rails 203, so as to facilitate the comparison of the test results during colorimetry. The surface of the kit body 101 is made of polypropylene material, and the interior is filled with a hygroscopic sponge. The reaction chamber 102 is sealed by a screw cap 10201, and a mixed solid detection reagent 10204 of potassium persulfate and sodium hydroxide wrapped with a water-soluble polyvinyl alcohol film is placed in the storage tank 10203. The two reagent chambers 103 are filled with a mixture of phenol disulfonic acid and sodium nitrite and potassium phosphate solid, all of which are wrapped in a water-soluble polyvinyl alcohol film. During the test, the sample water is first added to the reaction tank 10202 through the main dropper 107 or the spare dropper 108, and the cover 10201 is sealed to prevent contamination. After the oxidation reaction is completed, the nozzle 10301 of the reagent chamber 103 is removed, and the spherical reagent 10302 is assisted by gravity or the air chamber 10304 to slide into the reaction tank 10202 for color development reaction, and the results are compared with the standard colorimetric card 204. This design effectively reduces the use of experimental equipment, simplifies the operation steps, and ensures the convenience and accuracy of detection.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A kit with a rapid detection function, comprising three kit bodies (1) and a kit cover (2), characterized in that: The reagent box cover (2) is hingedly connected to one side edge of the upper surface of the three reagent box bodies (1); the reagent box cover (2) comprises a box cover shell (201), a connecting shaft (202), two slide rails (203) and a standard colorimetric card (204); the three reagent box bodies (1) each comprise a reagent box body (101), a reaction chamber (102), two reagent chambers (103), five label slots (104), a first card slot (105), a second card slot (106), a main dropper (107) and a spare dropper (108); The reaction chamber (102) includes a screw cap (10201), a reaction tank (10202), a storage tank (10203) and a detection reagent (10204), and the two reagent chambers (103) each include a nozzle (10301), a spherical reagent (10302), a slide tube (10303) and an air chamber (10304).

2. A kit with rapid detection function according to claim 1, characterized in that: The reagent box cover (2) is hingedly connected to the three reagent box bodies (1) via a connecting shaft (202); the connecting shaft (202) is fixedly connected to one side edge of the box cover shell (201); the two slide rails (203) are respectively fixedly arranged at the middle of the inner surface of the box cover shell (201) and at one side close to the connecting shaft (202); the standard colorimetric card (204) is slidably connected to the two slide rails (203).

3. A kit with rapid detection function according to claim 1, characterized in that: The surface material of the reagent box body (101) is made of polypropylene material and filled with moisture-absorbing sponge inside. The reaction chamber (102), the two reagent chambers (103), the label slot (104), the first card slot (105) and the second card slot (106) are made of polypropylene material. The main dropper (107) is snap-connected inside the first card slot (105), and the spare dropper (108) is snap-connected inside the second card slot (106). The main dropper (107) and the spare dropper (108) are made of translucent polypropylene material and are marked with scales.

4. A kit with rapid detection function according to claim 1, characterized in that: The screw cap (10201) is threadedly sleeved onto the reaction tank (10202); the storage tank (10203) is opened at the center of the bottom of the reaction tank (10202); the detection reagent (10204) is stored inside the storage tank (10203); the detection reagent (10204) is a solid mixture of potassium persulfate and sodium hydroxide in a ratio of six to one; and the detection reagent (10204) is wrapped with a water-soluble polyvinyl alcohol film.

5. The kit with rapid detection function according to claim 1, characterized in that: The nozzle (10301) is snap-connected to one end of the sliding tube (10303), the air chamber (10304) is fixedly connected to the other end of the sliding tube (10303), and the spherical reagent (10302) is slidably set inside the sliding tube (10303). The spherical reagent (10302) inside the two reagent chambers (103) respectively adopts a mixed solid of phenol disulfonic acid and sodium nitrite in a ratio of one to one and potassium phosphate solid, and the spherical reagent (10302) is wrapped with a water-soluble polyvinyl alcohol film.

6. A kit with rapid detection function according to claim 1, characterized in that: The two reagent chambers (103) are axially symmetrically arranged at an inclined position on one side of the reagent chamber (102) inside the reagent chamber body (101), and the nozzle (10301) is fixedly connected to the reaction tank (10202) through the nozzle.

7. A kit with rapid detection function according to claim 1, characterized in that: The three reagent kit bodies (1) are mutually clamped and connected in pairs along the axial direction of the connecting shaft (202).

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