System for detecting water sample by semi-automatic titration method
By designing a semi-automatic titration system for water sample testing, and employing a drive motor for stirring and a photoelectric sensor for detection, the problems of low efficiency and high cost of existing titration testing methods have been solved, achieving miniaturized, portable, and highly efficient testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KAMOER FLUILD TECH SHANGHAI CO LTD
- Filing Date
- 2025-03-04
- Publication Date
- 2026-04-28
AI Technical Summary
Existing titration detection methods rely on manual operation, which is inefficient. Equipment-based colorimetric methods are costly and have complex optical path processes. ICP detection equipment is too bulky for individuals to afford.
A semi-automatic titration system for water sample testing is designed, which uses a drive motor for stirring, a photoelectric sensor for detection, and the Langer-Beer law to calculate the concentration. The device is miniaturized and portable, and simplifies reagent preparation requirements.
It improves detection efficiency and accuracy, reduces equipment cost and size, and is easy to carry and use. It is especially suitable for the detection of calcium ions, magnesium ions and bicarbonate ions in seawater.
Smart Images
Figure CN224176386U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metrology equipment technology, and in particular to a semi-automatic titration system for testing water samples. Background Technology
[0002] When detecting elements such as calcium, magnesium, and bicarbonate ions in high concentrations, like in seawater, titration is a cost-effective and relatively accurate method. Laboratory titration analysis typically uses manual titration, where the endpoint is indicated by the color change of an indicator, and the volume of standard solution consumed is visually assessed.
[0003] Current titration testing mainly relies on manual testing, which requires improvement in efficiency. Colorimetric methods are also used, but they have high requirements for the optical path technology of the manufacturing equipment and the reagent preparation process. ICP testing solutions have problems such as high equipment cost, which is difficult for individuals to afford, and large equipment size. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a semi-automatic titration method for water sample testing, which overcomes the deficiencies of existing technologies. The aim is to solve the problems of existing titration testing methods, which mainly rely on manual testing, resulting in lower testing efficiency. Colorimetric methods are also used, but they have high requirements for the optical path process of the manufacturing equipment and the reagent preparation process. ICP testing methods have the problems of high equipment cost, which is difficult for individuals to afford, and large size.
[0005] To achieve the above objectives, this application provides the following technical solution: a semi-automatic titration system for detecting water samples, comprising a housing, the housing including a top shell and a bottom shell, the top shell being located above the bottom shell, a through hole being formed inside the top shell and communicating with the interior of the bottom shell, a display panel being provided on the top of the top shell, a cuvette being fitted inside the through hole, a stirring magnetic block being provided inside the cuvette, a base being provided inside the bottom shell, a drive motor being provided on the top of the base, and two sets of magnets being installed at the output end of the drive motor. The magnets have opposite magnetic poles. A mounting plate is provided above the base, and a light shield is provided on the top of the mounting plate. The light shield is fitted over the outside of the cuvette. A semi-transparent and semi-reflective beam splitter, a first light source, a second light source, and a photoelectric sensor are mounted above the mounting plate. The photoelectric sensor is located on the opposite side of the semi-transparent and semi-reflective beam splitter, the first light source, and the second light source. The semi-transparent and semi-reflective beam splitter is tilted, and its two sides are respectively positioned to correspond to the first light source and the second light source. The photoelectric sensor is electrically connected to the display panel.
[0006] By adopting the above technical solution and by setting up an outer shell, during use, the initial detection reagent is first added to the cuvette, and then the externally collected and processed initial water sample is added. At this time, the initial detection reagent and the initial water sample react inside the cuvette. Activating the drive motor at the bottom allows the magnetic force to drive the stirring block to rotate, thereby stirring the liquid inside the cuvette and increasing the reaction speed. Then, according to the detection needs, light source one and light source two are activated. The absorbance of the liquid is detected by a photoelectric sensor on one side, and the concentration of the water sample to be tested is calculated using the Langer-Beer law. The titration method is as follows: first, add a certain amount of detection reagent to the cuvette, turn on the drive motor and light source one or light source two, and then add the reagent to the cuvette using a graduated pipette or syringe. The water sample is added drop by drop, and a photoelectric sensor continuously monitors the absorbance of the reagent and water sample mixture. When a drop of water sample is added, a dramatic change in the absorbance of the reagent and water sample mixture indicates that the titration endpoint has been reached, and the titration is stopped. The concentration of the water sample is calculated by detecting the concentration and volume of the reagent, as well as the volume of the water sample consumed during titration. Simultaneously, the operator can set the values for this test, and subsequent test results are displayed on the display panel. The device is small and portable, lacking internal pumps and piping, allowing for a very small size for easy use and carrying. It also features low requirements for manufacturing processes and reagent preparation. For example, when detecting calcium, magnesium, and bicarbonate ions in seawater, the accuracy of titration is better than that of colorimetric methods.
[0007] As a preferred technical solution of this application, the base is provided with fixing blocks on all four sides, and a slot is provided on one side of each of the four sets of fixing blocks. The bottom shell is provided with limiting blocks corresponding to the four sets of fixing blocks, and a locking strip corresponding to the slot is provided on the outer side of each of the four sets of limiting blocks.
[0008] By adopting the above technical solution and setting four sets of limiting blocks, the base can be reinforced to prevent it from shifting due to vibration during long-term use, thereby improving stability and stirring efficiency.
[0009] As a preferred embodiment of this application, an outer collar is provided outside the through hole, and the outer collar is sleeved on the outside of the cuvette.
[0010] By adopting the above technical solution and setting an external collar, the stability of the colorimetric cuvette inside the through hole can be further limited during use, thereby improving stability.
[0011] As a preferred technical solution of this application, the top of the cuvette is provided with a cuvette lid, and the top of the cuvette is provided with a threaded area that matches the interior of the cuvette lid.
[0012] By adopting the above technical solution and setting a cuvette lid, a light-blocking effect can be achieved. At the same time, the threaded area design allows for easy installation and removal when not in use, improving the practicality of the device.
[0013] As a preferred technical solution of this application, a plurality of control buttons are provided on one side of the top shell, and the plurality of control buttons are electrically connected to the display panel.
[0014] By adopting the above technical solution and setting control buttons, the overall display area of the display panel can be ensured during use, while also making operation more convenient and improving the practicality of the device.
[0015] As a preferred technical solution of this application, two sets of fixing bolts are provided on one side of the top shell, and the two sets of fixing bolts are threaded through the top shell and the bottom shell.
[0016] By adopting the above technical solution and setting fixing bolts, the connection between the top shell and the bottom shell can be made more secure during use, and it will also be more convenient to disassemble and maintain.
[0017] As a preferred technical solution of this application, the bottom of the outer shell is provided with four sets of stabilizing pads, all of which are made of rubber.
[0018] By adopting the above technical solution and setting a stabilizing pad, the device can be placed more stably on the test bench, preventing slippage and displacement.
[0019] The beneficial effects of this application are:
[0020] 1. By designing an outer casing, during use, first add the initial test reagent to the cuvette, then continue adding the externally collected and processed initial water sample. The initial test reagent and initial water sample react inside the cuvette. Activating the bottom drive motor allows the magnetic stir block to rotate under magnetic force, thus stirring the liquid inside the cuvette and increasing the reaction speed. Then, according to the detection needs, activate light source one and light source two. A photoelectric sensor on one side detects the absorbance of the liquid, and the concentration of the water sample is calculated using Langerbeer's law. The titration method is as follows: first, add a certain amount of test reagent to the cuvette, turn on the drive motor and light source one or two, then add the water sample to the cuvette drop by drop using a graduated pipette or syringe. The photoelectric sensor continuously detects the absorbance of the reagent and water sample mixture until a drop of water sample is added, at which point the absorbance of the mixture changes drastically, indicating that the titration endpoint has been reached, and the titration is stopped. The concentration of the water sample is calculated by measuring the concentration and volume of the reagent, as well as the volume consumed during titration. Simultaneously, staff can set the values for each test, and the results are displayed on the control panel. The device is small and portable, lacking internal pumps and piping, allowing for easy use and carrying. It also features low requirements for manufacturing processes and reagent preparation. For example, when detecting calcium, magnesium, and bicarbonate ions in seawater, titration provides better accuracy than colorimetric methods.
[0021] 2. By setting four sets of limit blocks, the base can be reinforced to prevent it from shifting due to vibration during long-term use, thereby improving stability and stirring efficiency. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this application;
[0023] Figure 2 This is a schematic diagram of the internal structure of this application;
[0024] Figure 3 This is a schematic diagram of the base structure of this application;
[0025] Figure 4 This is a schematic diagram of the cuvette structure of this application.
[0026] In the diagram: 1. Outer shell; 2. Top shell; 201. Display panel; 202. Control button; 203. Through hole; 204. Outer collar; 205. Fixing bolt; 3. Bottom shell; 301. Stabilizing pad; 302. Limiting block; 303. Locking strip; 4. Cuvette; 401. Cuvette lid; 402. Threaded area; 403. Stirring magnetic block; 5. Base; 501. Drive motor; 502. Magnet; 503. Fixing block; 504. Slot; 6. Mounting plate; 601. Semi-transparent and semi-reflective beam splitter; 602. Light source one; 603. Light source two; 604. Photoelectric sensor; 605. Light shield. Detailed Implementation
[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0028] Reference Figure 1-4 A semi-automatic titration system for water sample testing includes a housing 1, which comprises a top shell 2 and a bottom shell 3. The top shell 2 is located above the bottom shell 3. A through hole 203 is provided inside the top shell 2, communicating with the interior of the bottom shell 3. A display panel 201 is provided on the top of the top shell 2. A cuvette 4 is fitted inside the through hole 203, and a stirring magnetic block 403 is provided inside the cuvette 4. A base 5 is provided inside the bottom shell 3, and a drive motor 501 is provided on the top of the base 5. Two sets of magnets 502 are installed at the output end of the drive motor 501, with opposite magnetic poles between the two sets of magnets 502. A mounting plate 6 is provided above the cuvette 4. A light shield 605 is provided on the top of the mounting plate 6. The light shield 605 is fitted onto the outside of the cuvette 4. A semi-transparent and semi-reflective beam splitter 601, a first light source 602, a second light source 603, and a photoelectric sensor 604 are installed above the mounting plate 6. The photoelectric sensor 604 is located on the opposite side of the semi-transparent and semi-reflective beam splitter 601, the first light source 602, and the second light source 603. The semi-transparent and semi-reflective beam splitter 601 is set at an angle. The two sides of the semi-transparent and semi-reflective beam splitter 601 are respectively set to correspond to the first light source 602 and the second light source 603. The photoelectric sensor 604 is electrically connected to the display panel 201.
[0029] By designing the outer casing, during use, initial detection reagents are first added to the cuvette 4, followed by the addition of externally collected and processed initial water samples. The initial detection reagents and initial water samples react inside the cuvette 4. Activating the bottom drive motor 501 allows the magnetic stirring block 403 to rotate under magnetic force, thus stirring the liquid inside the cuvette 4 and increasing the reaction speed. Then, light sources 602 and 603 are activated as needed for detection, and the reaction is controlled by a photoelectric sensor located on one side. The absorbance of the liquid is detected by sensor 604. The concentration of the water sample to be tested is calculated using the Langer-Beer law. The titration method is as follows: First, add a certain amount of test reagent into cuvette 4. Turn on the drive motor 501 and light source 602 or light source 603. Then, add the water sample to be tested drop by drop into cuvette 4 through a graduated pipette or syringe. The photoelectric sensor 604 continuously detects the absorbance of the reagent and water sample mixture until a drop of water sample is added. When the absorbance of the reagent and water sample mixture changes drastically, it indicates that the titration endpoint has been reached, and the titration is stopped. The concentration of the water sample to be tested is calculated by measuring the concentration and volume of the reagent, as well as the volume consumed during titration. Simultaneously, staff can set the values for this test, and the results are displayed on the control panel. The device is small and portable, lacking internal pumps and piping, allowing for easy use and carrying. It also features low requirements for manufacturing processes and reagent preparation. For example, when detecting calcium, magnesium, and bicarbonate ions in seawater, titration provides better accuracy than colorimetric methods. The external collar 204 further limits the stability of the cuvette 4 within the through-hole 203, improving overall stability.
[0030] Reference Figure 1The base 5 has four fixing blocks 503 around its perimeter. Each of the four fixing blocks 503 has a slot 504 on one side. The bottom shell 3 has four corresponding limiting blocks 302 inside the fixing blocks 503. Each of the four limiting blocks 302 has a locking strip 303 on its outer side corresponding to the slot 504. The cuvette 4 has a cuvette cover 401 on its top. The top of the cuvette 4 has a threaded area 402 that matches the interior of the cuvette cover 401. The top shell 2 has two sets of fixing bolts 205 on one side, with bolts 205 penetrating between the top shell 2 and the bottom shell 3. The base 5 is reinforced by four sets of limiting blocks 302, preventing it from shifting due to vibration during long-term use, thus improving stability and stirring efficiency. The cuvette cover 401 provides light protection, and the threaded area 402 allows for easy installation and removal when not in use, enhancing the device's practicality. The fixing bolts 205 ensure a tighter connection between the top shell 2 and the bottom shell 3 during use, and also facilitate disassembly and maintenance.
[0031] Reference Figure 1 Multiple control buttons 202 are provided on one side of the top shell 2, and all control buttons 202 are electrically connected to the display panel 201. By setting the control buttons 202, the overall display area of the display panel 201 can be ensured during use, and it is also more convenient to operate, improving the practicality of the device. Four sets of stabilizing pads 301 are provided at the bottom of the outer shell 1. All four sets of stabilizing pads 301 are made of rubber. By setting the stabilizing pads 301, the device can be placed more stably on the test bench, preventing slippage and displacement.
[0032] Working principle: With the outer shell, during use, initial detection reagent is first added to the cuvette 4, followed by the addition of the externally collected and processed initial water sample. The initial detection reagent and initial water sample react inside the cuvette 4. Activating the bottom drive motor 501 allows the magnetic force to rotate the stirring block 403, thus stirring the liquid inside the cuvette 4 and increasing the reaction speed. Then, according to the detection requirements, light source one 602 and light source two 603 are activated, and the reaction proceeds via a photoelectric sensor on one side. The absorbance of the liquid is detected by sensor 604, and the concentration of the water sample to be tested is calculated by the Langer-Beer law. The titration method is as follows: First, a certain amount of test reagent is added into the cuvette 4. Then, the drive motor 501 and light source 602 or light source 603 are turned on. Then, the water sample to be tested is added drop by drop into the cuvette 4 through a graduated pipette or syringe. The photoelectric sensor 604 continuously detects the absorbance of the reagent and water sample mixture until a drop of water sample is added. When the absorbance of the reagent and water sample mixture changes drastically, it indicates that the titration endpoint has been reached, and the titration is stopped. The concentration of the water sample is calculated by measuring the concentration and volume of the reagent, as well as the volume consumed during titration. Simultaneously, operators can set the values for each test, and the results are displayed on the control panel. The device is small and portable, lacking internal pumps and piping, making it easy to use and carry. It also features low requirements for manufacturing processes and reagent preparation. For example, when detecting calcium, magnesium, and bicarbonate ions in seawater, titration methods offer better accuracy than colorimetric methods. Four sets of limiting blocks 302 reinforce the base 5, preventing displacement due to vibration during long-term use, thus improving stability and stirring efficiency.
[0033] Among them, by setting the outer collar 204, the stability of the cuvette 4 inside the through hole 203 can be further limited during use, thereby improving stability. By setting the cuvette cover 401, the light-blocking effect can be achieved. At the same time, the design of the threaded area 402 makes it easy to install and remove when not in use, thus improving the practicality of the device.
[0034] Meanwhile, by setting control button 202, the overall display area of display panel 201 can be ensured during use, and it is also more convenient to operate, thus improving the practicality of the device.
[0035] In addition, by setting the fixing bolts 205, the connection between the top shell 2 and the bottom shell 3 can be made tighter during use, and it will also be more convenient to disassemble and maintain. By setting the stabilizing pads 301, the device can be placed more stably on the test bench, preventing slippage and displacement.
[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application 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 application should be included within the protection scope of this application.
Claims
1. A semi-automatic titration system for detecting water samples, comprising a casing (1), characterized in that, The outer shell (1) includes a top shell (2) and a bottom shell (3). The top shell (2) is located above the bottom shell (3). A through hole (203) is provided inside the top shell (2), and the through hole (203) is connected to the inside of the bottom shell (3). A display panel (201) is provided on the top of the top shell (2). A cuvette (4) is fitted inside the through hole (203). A stirring magnetic block (403) is provided inside the cuvette (4). A base (5) is provided inside the bottom shell (3). A drive motor (501) is provided on the top of the base (5). Two sets of magnets (502) are installed at the output end of the drive motor (501). The magnetic poles of the two sets of magnets (502) are opposite. A [missing information] is provided on the top of the base (5). Mounting plate (6), the top of which is provided with a light shield (605), the light shield (605) is sleeved on the outside of the cuvette (4), a semi-transparent and semi-reflective beam splitter (601), a light source one (602), a light source two (603) and a photoelectric sensor (604) are installed on the top of the mounting plate (6), the photoelectric sensor (604) is located on the side opposite to the semi-transparent and semi-reflective beam splitter (601), the light source one (602) and the light source two (603), the semi-transparent and semi-reflective beam splitter (601) is inclined, the two sides of the semi-transparent and semi-reflective beam splitter (601) are respectively provided with light source one (602) and light source two (603), and the photoelectric sensor (604) is electrically connected to the display panel (201).
2. The semi-automatic titration method system for water sample detection according to claim 1, characterized in that, The base (5) is provided with fixing blocks (503) around its perimeter. Each of the four sets of fixing blocks (503) has a slot (504) on one side. The bottom shell (3) is provided with limiting blocks (302) corresponding to the four sets of fixing blocks (503) inside. Each of the four sets of limiting blocks (302) has a locking strip (303) corresponding to the slot (504) on its outer side.
3. The semi-automatic titration method system for water sample detection according to claim 1, characterized in that, An outer collar (204) is provided outside the through hole (203), and the outer collar (204) is sleeved on the outside of the cuvette (4).
4. The semi-automatic titration method system for water sample detection according to claim 1, characterized in that, The cuvette (4) is provided with a cuvette lid (401) on its top, and the top of the cuvette (4) is provided with a threaded area (402) that matches the interior of the cuvette lid (401).
5. The semi-automatic titration method system for water sample detection according to claim 1, characterized in that, A plurality of control buttons (202) are provided on one side of the top shell (2), and the plurality of control buttons (202) are electrically connected to the display panel (201).
6. The semi-automatic titration method system for detecting water samples according to claim 1, characterized in that, Two sets of fixing bolts (205) are provided on one side of the top shell (2), and the two sets of fixing bolts (205) are threaded through the top shell (2) and the bottom shell (3).
7. The semi-automatic titration method system for detecting water samples according to claim 1, characterized in that, The bottom of the outer shell (1) is provided with four sets of stabilizing pads (301), all of which are made of rubber.