Metal concentration measuring device based on violuric acid ammonium test paper

Abstract

The utility model discloses a metal concentration measuring device based on violuric acid ammonium test paper, and relates to the technical field of metal concentration measuring devices. The metal concentration measuring device based on the ammonium murexide test paper comprises a bottom plate, and a storage box for storing the ammonium murexide test paper, a positioning seat and a waste box are sequentially mounted above the bottom plate; a paper discharging assembly for automatically discharging test paper is mounted on the storage box, a measuring bottle is placed on the positioning seat, and a moving assembly for clamping the test paper and moving the test paper into the measuring bottle for detection is mounted on one side of the bottom plate; one side of the storage box is provided with a moisture-proof component for preventing test paper from being damped; according to the device, through the paper discharging assembly for automatically discharging the test paper and the moving assembly for clamping and moving the test paper, the process of automatically taking, clamping and immersing the test paper into the measuring bottle for detection is realized, the automation degree of measurement is improved, and the influence of manual operation on the test paper detection accuracy is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of metal concentration measuring devices, specifically a metal concentration measuring device based on ammonium purpurate test paper. Background Technology

[0002] In the process of treating wastewater in animal husbandry or industry, the concentration of metal ions affects the wastewater treatment methods and various treatment conditions, including time, temperature, and pH. Ammonium purpurate test paper is a test paper that can efficiently detect multiple metal ions such as calcium, cobalt, copper, nickel, manganese, scandium, and zinc. The core of the metal concentration measurement device based on ammonium purpurate test paper lies in using the color change produced by the reaction of ammonium purpurate with metal ions to indicate the concentration of metal ions, providing an important foundation for wastewater treatment in real production and daily life.

[0003] Referring to the heavy metal detection test strip detection container assembly disclosed in patent application CN207318361U, which belongs to the field of heavy metal detection, it includes a slurry tray, which is disc-shaped and has several circular slurry storage slots on its upper surface. A circular central slurry pouring slot is located at the center of the upper surface of the slurry tray, and the central slurry pouring slot is connected to each of the slurry storage slots. The inner diameter of the central slurry pouring slot is larger than the inner diameter of the slurry storage slots. A cylindrical sleeve is integrally formed on the central slurry pouring slot, and the lower end of the sleeve is integral with the upper surface of the slurry tray. A test strip holding tray is annular and has several retractable and repositionable test strip holding mechanisms that clamp one end of the test strip onto the test strip holding tray. The position and number of the test strip holding mechanisms correspond to the slurry storage slots. The test strip holding tray is fitted onto the sleeve. This assembly optimizes the operation steps and facilitates comparison by the operator.

[0004] As shown in the prior art, the metal concentration measuring device for test strips in the prior art requires manual clamping of the test strip on a clamping plate, and then the test strip is immersed in the slurry storage tank by moving the clamping plate until the test strip develops color. Then the clamping plate is moved up to observe the test strip and compare its metal concentration. This is inconvenient to use. In addition, the test strip needs to be placed manually, and ammonium purpurate test strips need to be stored in a dry place. Manual operation can easily cause moisture from the hands to get on the test strip, affecting the accuracy of the test strip detection.

[0005] Therefore, it is necessary to provide a metal concentration measuring device based on ammonium purpurate test paper to solve the above-mentioned technical problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To solve the above-mentioned technical problems, this utility model provides a metal concentration measuring device based on ammonium purpurate test paper.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a metal concentration measuring device based on ammonium purpurate test paper, comprising a base plate, and a storage box, a positioning seat, and a waste box for storing ammonium purpurate test paper are sequentially installed on the top of the base plate;

[0010] The storage box is equipped with an automatic test strip dispensing component, the positioning seat holds a measuring bottle, and a moving component is installed on one side of the base plate for clamping the test strip and moving it into the measuring bottle for testing.

[0011] A moisture-proof component is installed on one side of the storage box to prevent the test strips from getting damp.

[0012] Preferably, the paper output assembly includes an electric push rod fixed above the storage box, the protruding end of the electric push rod is located inside the storage box on one side, a paper output port is opened below the storage box, a long plate is fixed to the protruding end of the electric push rod near the paper output port, and a rubber pad is fixed to the long plate near the paper output port.

[0013] Inside the storage box, some springs are fixed away from the electric push rod. At the end of the springs near the electric push rod, there is a pressure plate for squeezing the test paper. The pressure plate is slidably connected to the inside of the storage box.

[0014] Preferably, the moving component includes a linear motor mounted on one side above the base plate, a moving frame mounted on the moving end of the linear motor, a first motor fixed below the moving frame, a screw rotatably connected above the moving frame, the lower end of the screw passing through the moving frame and fixed to the output end of the first motor, a mounting frame slidably connected above the moving frame, and long clips for holding test strips symmetrically slidably connected to the lower end of the mounting frame away from the moving frame, and a driving component for driving the two long clips to open and close is mounted on the end of the mounting frame near the long clips.

[0015] Preferably, the moisture-proof component includes a through hole on one side of the storage box, a placement shell fixed to the side of the storage box near the through hole, a shell cover rotatably connected to the side of the placement shell away from the storage box, a retaining ring fixed to one side of the placement shell, and an elastic retaining strip fixed to the side of the shell cover near the retaining ring, the elastic retaining strip engaging with the retaining ring.

[0016] Preferably, a paper-filling slot is provided on the top of the storage box, a paper-filling cover is rotatably connected to one side of the paper-filling slot, a first magnet is fixed on the top of the storage box, a second magnet is fixed below the paper-filling cover, and the first magnet and the second magnet are magnetically connected.

[0017] Preferably, a flip cover is rotatably connected to one side of the paper outlet, a third magnet is fixed above the flip cover, and a fourth magnet is fixed below the storage box, with the third magnet and the fourth magnet being magnetically connected.

[0018] (III) Beneficial Effects

[0019] This invention provides a metal concentration measuring device based on ammonium purpurate test paper. Compared with the prior art, it has the following advantages:

[0020] 1. This device, through an automatic test strip dispensing component and a moving component for clamping and moving the test strip, realizes the automatic process of picking up, clamping, and immersing the test strip into the measuring bottle for testing, thereby improving the degree of automation of the measurement and reducing the impact of manual operation on the accuracy of test strip testing.

[0021] 2. This application effectively prevents the test strips from getting damp by using moisture-proof components, such as a desiccant container and its sealing structure, ensuring the test strips remain dry during storage and further guaranteeing the accuracy of the measurement. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the storage box and through hole of this utility model;

[0024] Figure 3 This is a schematic diagram illustrating the relationship between the retaining ring and the elastic retaining strip of this utility model;

[0025] Figure 4 This is a schematic diagram of the bottom of the storage box of this utility model.

[0026] The following are labeled in the diagram: 1. Base plate; 2. Storage box; 3. Positioning seat; 4. Waste box; 5. Measuring bottle; 6. Paper outlet; 7. Electric push rod; 8. Long plate; 9. Rubber pad; 10. Spring; 11. Pressure plate; 12. Linear motor; 13. Moving frame; 14. First motor; 15. Screw; 16. Through hole; 17. Placement shell; 18. Shell cover; 19. Elastic retaining strip; 20. Retaining ring; 21. Paper feeding slot; 22. Paper feeding cover; 23. Second magnet; 24. First magnet; 25. Flip cover; 26. Third magnet; 27. Fourth magnet; 28. Mounting frame; 29. ​​Long clamp. Detailed Implementation

[0027] 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.

[0028] This utility model provides two technical solutions:

[0029] Figures 1 to 2 The first embodiment is shown: a metal concentration measuring device based on ammonium purpurate test paper, including a base plate 1, and a storage box 2 for storing ammonium purpurate test paper, a positioning seat 3 and a waste box 4 are installed sequentially on the base plate 1;

[0030] The storage box 2 is equipped with an automatic test strip dispensing component, the positioning seat 3 is placed with a measuring bottle 5, and a moving component is installed on one side of the base plate 1 for clamping the test strip and moving the test strip into the measuring bottle 5 for testing.

[0031] A moisture-proof component is installed on one side of the storage box 2 to prevent the test strips from getting damp.

[0032] The paper output assembly includes an electric push rod 7 fixed above the storage box 2. The protruding end of the electric push rod 7 is located inside the storage box 2 on one side. A paper output port 6 is opened below the storage box 2. A long plate 8 is fixed to the protruding end of the electric push rod 7 near the paper output port 6. A rubber pad 9 is fixed to the long plate 8 near the paper output port 6.

[0033] Inside the storage box 2, some springs 10 are fixed away from the electric push rod 7. A pressure plate 11 for squeezing the test paper is fixed at the end of the spring 10 near the electric push rod 7. The pressure plate 11 is slidably connected to the inside of the storage box 2.

[0034] The moving component includes a linear motor 12 mounted on one side above the base plate 1. A moving frame 13 is mounted on the moving end of the linear motor 12. A first motor 14 is fixed below the moving frame 13. A screw 15 is rotatably connected above the moving frame 13. The lower end of the screw 15 passes through the moving frame 13 and is fixed to the output end of the first motor 14. A mounting frame 28 is slidably connected above the moving frame 13. Long clips 29 for holding test strips are symmetrically slidably connected to the lower end of the mounting frame 28 away from the moving frame 13. A drive component for driving the two long clips 29 to open and close is installed at the end of the mounting frame 28 near the long clips 29.

[0035] A paper filling slot 21 is provided on the top of the storage box 2. A paper filling cover 22 is rotatably connected to one side of the paper filling slot 21. A first magnet 24 is fixed on the top of the storage box 2, and a second magnet 23 is fixed below the paper filling cover 22. The first magnet 24 and the second magnet 23 are magnetically connected.

[0036] A flip cover 25 is rotatably connected to one side of the paper outlet 6. A third magnet 26 is fixed above the flip cover 25, and a fourth magnet 27 is fixed below the storage box 2. The third magnet 26 and the fourth magnet 27 are magnetically connected.

[0037] The device achieves the automatic dispensing, clamping, and immersion of test strips into the measuring bottle 5 for testing through an automatic test strip dispensing component and a moving component for clamping and moving the test strips. This improves the automation level of the measurement and reduces the impact of manual operation on the accuracy of test strip testing.

[0038] Figures 3 to 4 The second embodiment is shown, and its main difference from the first embodiment is:

[0039] The moisture-proof component includes a through hole 16 on one side of the storage box 2, a placement shell 17 fixed on the side of the storage box 2 near the through hole 16, a cover 18 rotatably connected to the side of the placement shell 17 away from the storage box 2, a retaining ring 20 fixed on one side of the placement shell 17, and an elastic retaining strip 19 fixed on the side of the cover 18 near the retaining ring 20, the elastic retaining strip 19 engaging with the retaining ring 20.

[0040] This application effectively prevents the test strips from getting damp by using moisture-proof components, such as the desiccant housing 17 and its sealing structure, ensuring the test strips remain dry during storage and further guaranteeing the accuracy of the measurements.

[0041] Preparation of Ammonium Purpurate Test Strips: Wastewater typically contains multiple metal ions, and ammonium purpurate test strips can detect the concentration of various metal ions. The general preparation method is as follows: Transfer 10 mL of 0.5 g / L PAR colorimetric reagent into a 25 mL colorimetric tube, dilute to the mark with water:ethanol (1:1) to prepare the soaking solution. Cut filter paper into 3 mm × 100 mm strips, then immerse the strips in the soaking solution for 20 minutes. Afterward, remove and dry in a 70℃ oven for 15 minutes. The dried test strips will be yellow. Store them in a plastic bag away from light. Because ammonium purpurate is easily oxidized, nitrogen gas should be introduced during drying as a protective gas to maximize the retention of ammonium purpurate.

[0042] Based on the reaction characteristics of ammonium purpurate with metal ions, standard solutions of different concentrations were prepared, and these solutions were then brought into contact with test paper to observe the color changes. Color charts were created based on the intensity of the color for subsequent comparison.

[0043] The working principle of the metal concentration measuring device based on ammonium purpurate test paper is as follows: The housing 17 and the cover 18 form a sealed dry environment for storing desiccant to prevent the test paper from getting damp. The desiccant absorbs moisture in the housing through the through hole 16. Pressing the elastic clip 19 moves it closer to the storage box 2, thereby unlocking the elastic clip 19 from the clip ring 20, allowing the cover 18 to be opened for desiccant replacement.

[0044] Open the paper filling cover 22 to separate the first magnet 24 and the second magnet 23, and add ammonium purpurate test paper into the storage box 2 through the paper filling slot 21. After the test paper is added, the spring 10 causes the pressure plate 11 to always push the test paper into the storage box 2 towards the side close to the long plate 8. When the test paper is needed, open the flip cover 25 to separate the third magnet 26 and the fourth magnet 27, exposing the paper outlet 6. The electric push rod 7 pushes the long plate 8 and the rubber pad 9 through the telescopic movement, thereby using the friction between the rubber pad 9 and the test paper to squeeze the test paper and send it out from the paper outlet 6.

[0045] Linear motor 12 drives the moving frame 13 to move to the side close to the storage box 2. When the test strip moves out of the paper outlet 6, the drive component causes the long clamp 29 to close and hold the test strip. The drive component and linear motor 12 are existing technologies and will not be described in detail here. The first motor 14 causes the screw 15 to rotate, driving the mounting frame 28 to move down along the inner wall of the moving frame 13, so that the long clamp 29 holds the test strip and moves down, so that the test strip is completely separated from the storage box 2. Then, the linear motor 12 moves the moving frame 13 above the measuring bottle 5, and the first motor 14 moves the mounting frame 28 down, immersing the test strip held by the long clamp 29 into the test liquid in the measuring bottle 5. When the test strip develops color, the long clamp 29 moves up to display the test strip. The metal concentration in the test liquid can be roughly obtained by colorimetric comparison using a colorimetric card.

[0046] Then, the linear motor 12 drives the moving frame 13 to move to one side of the waste box 4, the first motor 14 causes the long clamp 29 to move down, and the drive component causes the long clamp 29 to open and put the test paper into the waste box 4; then the linear motor 12 drives the moving frame 13 to return to the side close to the storage box 2.

[0047] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the concentration of a metal based on a test paper of ammonium murexide, comprising a base plate (1), characterized in that: The bottom plate (1) is sequentially installed with a storage box (2) for storing the ammonium murexide test paper, a positioning seat (3) and a waste box (4); The storage box (2) is installed with a paper outlet assembly for automatically outputting the test paper, the positioning seat (3) is placed with a measuring bottle (5), and one side of the bottom plate (1) is installed with a moving assembly for clamping the test paper and moving the test paper into the measuring bottle (5) for detection; One side of the storage box (2) is installed with a moisture-proof assembly for preventing the test paper from being damp; The paper outlet assembly comprises an electric push rod (7) fixed above the storage box (2), the electric push rod (7) is located at one side of the inside of the storage box (2), a paper outlet (6) is formed below the storage box (2), the long plate (8) is fixed on one side of the electric push rod (7) close to the paper outlet (6), and the rubber pad (9) is fixed on one side of the long plate (8) close to the paper outlet (6); A plurality of springs (10) are fixed in the inside of the storage box (2) away from the electric push rod (7), one end of the spring (10) close to the electric push rod (7) is fixed with a pressing plate (11) for extruding the test paper, and the pressing plate (11) is in sliding connection with the inside of the storage box (2); The moving assembly comprises a linear motor (12) installed on one side above the bottom plate (1), a moving frame (13) is installed on the moving end of the linear motor (12), a first motor (14) is fixed below the moving frame (13), a screw rod (15) is rotatably connected above the moving frame (13), the lower end of the screw rod (15) penetrates through the moving frame (13) and is fixed with the output end of the first motor (14), an installation frame (28) is in sliding connection above the moving frame (13), the lower end of the installation frame (28) away from the moving frame (13) is symmetrically connected with a long clamp (29) for clamping the test paper, and a driving assembly is installed on one end of the installation frame (28) close to the long clamp (29) for driving the two long clamps (29) to open and close; The moisture-proof assembly comprises a through hole (16) formed on one side of the storage box (2), a placing shell (17) is fixed on one side of the storage box (2) close to the through hole (16), the placing shell (17) is rotatably connected with a shell cover (18) away from the storage box (2), a snap ring (20) is fixed on one side of the placing shell (17), the shell cover (18) is fixed with an elastic clamping strip (19) on one side close to the snap ring (20), and the elastic clamping strip (19) is clamped with the snap ring (20). 2.The metal concentration measuring device based on the purple urea acid ammonium test paper of claim 1, wherein: A paper adding slot (21) is formed above the storage box (2), a paper adding cover (22) is rotatably connected on one side of the paper adding slot (21), a first magnet (24) is fixed above the storage box (2), a second magnet (23) is fixed below the paper adding cover (22), and the first magnet (24) and the second magnet (23) are magnetically connected. 3.The device for measuring metal concentration based on the paper of purple urea according to claim 2, characterized in that: A turnover cover (25) is rotatably connected on one side of the paper outlet (6), a third magnet (26) is fixed above the turnover cover (25), a fourth magnet (27) is fixed below the storage box (2), and the third magnet (26) and the fourth magnet (27) are magnetically connected.

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