Online turbidity sensor calibration liquid automatic stirring device
By combining a magnetic stirrer and a strong magnet with a refrigerated box, the problems of insufficient stirring effect and cross-contamination in the online turbidity sensor calibration solution stirring device are solved, achieving efficient and reliable stirring of the calibration solution and improving calibration accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN LAWLINK DEV CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-24
AI Technical Summary
Existing online turbidity sensor calibration liquid stirring devices suffer from insufficient stirring effect, risk of cross-contamination, and insufficient reliability. In particular, built-in mechanical stirring is prone to creating dead zones, and cleaning is difficult, leading to risks of contamination and leakage.
A combination of a magnetic stir bar and a strong magnet is used to drive the stirring through magnetic coupling. Combined with a refrigerator to maintain a stable temperature, this achieves efficient stirring of the calibration solution and avoids physical contact and cross-contamination.
It achieves efficient stirring, avoids leakage risks and cross-contamination, improves the uniformity and measurement accuracy of the calibration solution, and reduces the measurement error of turbidity of the calibration solution after stirring.
Smart Images
Figure CN224541567U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of stirring device technology, and in particular to an automatic stirring device for online turbidity sensor calibration liquid. Background Technology
[0002] The calibration accuracy of online turbidity sensors is highly dependent on the homogeneity of the calibration solution. Since particulate matter in the calibration solution will settle and form a concentration gradient over time, thoroughly and uniformly stirring the calibration solution before use is a crucial step to ensure the effectiveness of the calibration.
[0003] In existing technologies, various stirring methods are employed to ensure the homogeneity of the calibration solution, thereby minimizing manual intervention and improving calibration efficiency. Common methods include:
[0004] (1) Manual stirring: The operator removes the calibration solution container and stirs it by shaking, inverting, or using a laboratory magnetic stirrer / vortex shaker.
[0005] (2) Built-in mechanical stirring: A motor-driven stirring paddle or magnetically coupled stirring element is installed inside the storage tank or chamber where the calibration liquid is stored. The motor drives the paddle to rotate and stir the liquid in the tank.
[0006] (3) Circulating pump stirring: The calibration liquid is circulated between the storage tank and the calibration chamber using the liquid transfer pump equipped on the calibration system itself.
[0007] However, existing online turbidity sensor calibration liquid stirring has the following drawbacks:
[0008] (1) Insufficient stirring effect: The built-in mechanical stirrer is prone to forming "dead zones" at the bottom, corners or near the stirring shaft of the tank. During the stirring of the circulating pump, the liquid tends to flow rapidly along a specific path, which cannot fully stir the entire tank volume, resulting in uneven local concentration.
[0009] (2) Risk of cross-contamination: After stirring and delivering the calibration solution, the standard solution will remain on the surface of the device, which is difficult to clean and may contaminate subsequent samples or calibration solutions of different concentrations, affecting the measurement and calibration accuracy.
[0010] (3) Insufficient reliability: The built-in mechanical agitator requires dynamic sealing, and there is a risk of leakage during long-term use, which may result in loss of calibration solution or entry of external contaminants.
[0011] To address the above issues, an automatic stirring device for online turbidity sensor calibration liquid was designed. Utility Model Content
[0012] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an automatic stirring device for online turbidity sensor calibration liquid, which improves the stirring effect, eliminates cross-contamination, avoids leakage risks, and improves the reliability of the stirring device.
[0013] To achieve the aforementioned objectives of this utility model, the present disclosure adopts the following technical solution:
[0014] An automatic stirring device for online turbidity sensor calibration liquid, the stirring device comprising:
[0015] At least one reagent bottle, wherein at least one magnetic stir bar is disposed inside the reagent bottle;
[0016] A tray is positioned below the reagent bottle, and the reagent bottle is detachably mounted on top of the tray.
[0017] A stirring motor is located below the tray, and a strong magnet is provided at the output end of the stirring motor. There is a gap between the strong magnet and the bottom wall of the reagent bottle.
[0018] The strong magnet can drive the magnetic stir bar to rotate through magnetic coupling, so as to stir the calibration solution in the reagent bottle.
[0019] In one exemplary embodiment of this disclosure, at least one baffle is detachably provided on the top of the tray, and the baffle is located on the side of the reagent bottle.
[0020] In one exemplary embodiment of this disclosure, the strong magnet includes:
[0021] A mounting plate is located at the output end of the stirring motor;
[0022] Two strong magnetic sheets are detachably mounted on the top sides of the mounting plate.
[0023] There is a gap between the strong magnetic sheet and the bottom wall of the reagent bottle.
[0024] In one exemplary embodiment of this disclosure, the distance between the strong magnet and the bottom wall of the reagent bottle is 1 to 3 centimeters.
[0025] In one exemplary embodiment of this disclosure, the reagent bottle is a flat-bottomed bottle, and the cross-section of the magnetic stir bar is elliptical;
[0026] The bottom wall of the magnetic stir bar is parallel to the inner wall of the bottom end of the reagent bottle.
[0027] In one exemplary embodiment of this disclosure, the stirring device further includes a cabinet, a refrigerator is disposed inside the cabinet, and the tray is disposed in the refrigerator.
[0028] In one exemplary embodiment of this disclosure, a motor support frame is provided inside the cabinet, the motor support frame is located below the refrigerator, a U-shaped frame is provided at the top of the motor support frame, and the stirring motor is mounted on the U-shaped frame;
[0029] The output shaft of the stirring motor extends into the refrigerator and is connected to the strong magnet. The output shaft of the stirring motor is rotatably connected to the bottom wall of the refrigerator.
[0030] In one exemplary embodiment of this disclosure, the top of the tray is provided with a placement groove, the placement groove is provided with a through hole, the strong magnet is located below the through hole, and the strong magnet is coaxially arranged with the through hole.
[0031] The beneficial effects of this disclosure are:
[0032] (1) In this disclosure, a magnetic stir bar placed at the bottom of the reagent bottle is driven to rotate by a rotating magnetic field, thereby stirring the calibration solution in the reagent bottle. The reagent bottle has good sealing performance, eliminates the risk of leakage, has high reliability, and achieves high-efficiency stirring.
[0033] (2) In this disclosure, there is a gap between the strong magnet and the reagent bottle. Different standard solutions can be stirred by simply replacing the reagent bottle. The stirring process isolates physical contact, avoids calibration solution residue, eliminates cross-contamination of different calibration solutions, and improves calibration accuracy.
[0034] (3) In this disclosure, a flat-bottomed reagent bottle and an elliptical magnetic stir bar are used. The magnetic stir bar is in close contact with the bottom wall of the reagent bottle. The magnetic stir bar is not easy to slip, jump or fail, so as to achieve full stirring, ensure that there is no dead zone in the reagent bottle, achieve uniform mixing of the calibration solution, and improve the stirring effect of the stirring device.
[0035] (4) In this disclosure, the temperature of the calibration solution is maintained by a refrigerator, which reduces the adverse effect of temperature on the calibration solution during stirring and reduces the measurement error of turbidity of the calibration solution after stirring. Attached Figure Description
[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0037] Figure 1 This is a schematic diagram of the structure of an automatic stirring device for online turbidity sensor calibration liquid in one embodiment of the present disclosure;
[0038] Figure 2 This is a front view of an automatic stirring device for online turbidity sensor calibration liquid in one embodiment of the present disclosure;
[0039] Figure 3This is a schematic diagram of the installation of a strong magnet in one embodiment of the present disclosure;
[0040] Figure 4 This is a schematic diagram of the installation of a magnetic stirrer in one embodiment of this disclosure.
[0041] Explanation of reference numerals in the attached figures:
[0042] 1. Reagent bottle; 2. Magnetic stir bar; 3. Tray; 4. Stirring motor; 5. Strong magnet; 6. Baffle; 7. Mounting plate; 8. Strong magnetic sheet; 9. Cabinet; 10. Refrigerated box; 11. Motor support frame; 12. U-shaped frame; 13. Placement slot; 14. Through hole; 15. Control box; 16. Controller. Detailed Implementation
[0043] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.
[0044] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.
[0045] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.
[0046] This disclosure provides an automatic stirring device for online turbidity sensor calibration liquid, see [link to relevant documentation]. Figures 1 to 4The stirring device includes: at least one reagent bottle 1, with at least one magnetic stir bar 2 disposed inside the reagent bottle 1; a tray 3 disposed below the reagent bottle 1, with the reagent bottle 1 detachably mounted on the top of the tray 3; and a stirring motor 4 disposed below the tray 3, with a strong magnet 5 disposed at the output end of the stirring motor 4, and a gap between the strong magnet 5 and the bottom wall of the reagent bottle 1; wherein the strong magnet 5 can drive the magnetic stir bar 2 to rotate through magnetic coupling to stir the calibration solution inside the reagent bottle 1.
[0047] In this embodiment, the online turbidity sensor calibration solution automatic stirring device consists of a reagent bottle 1, a magnetic stir bar 2, a tray 3, a stirring motor 4, and a strong magnet 5. The reagent bottle 1 is detachably mounted on the top of the tray 3. The magnetic stir bar 2 is placed on the bottom wall of the reagent bottle 1. The stirring motor 4 is mounted below the tray 3. The strong magnet 5 is mounted with its output end facing upwards. The strong magnet 5 is located below the reagent bottle 1, and there is a certain gap between the strong magnet 5 and the bottom wall of the reagent bottle 1. When it is necessary to stir the standard solution in the reagent bottle 1, the stirring motor 4 is started, which drives the strong magnet 5 to rotate. The strong magnet 5 drives the magnetic stir bar 2 to rotate through the magnetic field, thereby stirring the standard solution in the reagent bottle 1.
[0048] Compared to existing stirring methods, this online turbidity sensor calibration solution automatic stirring device uses a rotating magnetic field to drive a magnetic stirrer placed at the bottom of the reagent bottle to rotate, thereby stirring the calibration solution inside the bottle. The reagent bottle has good sealing, eliminating the risk of leakage, ensuring high reliability and achieving high-efficiency stirring. There is a gap between the strong magnet and the reagent bottle, so different standard solutions can be stirred simply by changing the reagent bottle. The stirring process isolates physical contact, avoiding calibration solution residue and eliminating cross-contamination between different calibration solutions, thus improving calibration accuracy.
[0049] In one embodiment of this disclosure, see [link to relevant documentation]. Figures 1 to 3 At least one baffle 6 is detachably provided on the top of the tray 3, and the baffle 6 is located on the side of the reagent bottle 1. In this way, the reagent bottle 1 can be limited to prevent it from shifting during the rotation of the magnetic stir bar 2, thereby improving the stability of the reagent bottle 1.
[0050] Optionally, baffles 6 are installed on each of the four sides of the reagent bottle 1.
[0051] It should be noted that the specifications of baffle 6 can be changed according to the size of reagent bottle 1.
[0052] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 3The strong magnet 5 includes: a mounting plate 7, located at the output end of the stirring motor 4; and two strong magnetic sheets 8, which are detachably mounted on the top sides of the mounting plate 7. The strong magnetic sheets 8 are spaced apart from the bottom wall of the reagent bottle 1. Thus, the two strong magnetic sheets 8 form a superimposed magnetic field, increasing the magnetic attraction force of the strong magnet 5, enhancing its driving effect on the magnetic stir bar 2, and consequently improving the stirring effect of the magnetic stir bar 2.
[0053] Optionally, the cross-section of the strong magnetic sheet 8 is rectangular.
[0054] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 2 The distance between the strong magnet 5 and the bottom wall of the reagent bottle 1 is 1-3 cm. This improves the magnetic attraction between the strong magnet 5 and the magnetic stir bar 2, making it easier for the strong magnet 5 to drive the magnetic stir bar 2 to rotate and improving the stirring effect of the magnetic stir bar 2.
[0055] Understandably, when the gap between the strong magnet 5 and the bottom wall of the reagent bottle 1 is greater than 3 cm, the magnetic attraction between the strong magnet 5 and the magnetic stir bar 2 weakens, the driving effect on the magnetic stir bar 2 weakens, the rotation speed of the magnetic stir bar 2 decreases, and the stirring effect on the calibration solution weakens. When the gap between the strong magnet 5 and the bottom wall of the reagent bottle 1 is less than 1 cm, the magnetic attraction between the strong magnet 5 and the magnetic stir bar 2 is too strong, the driving effect on the magnetic stir bar 2 is too strong, the rotation speed of the magnetic stir bar 2 increases, which can easily cause the calibration solution in the reagent bottle 1 to heat up, and the risk of collision with the reagent bottle 1 increases.
[0056] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 4 The reagent bottle 1 is a flat-bottomed bottle, and the magnetic stir bar 2 has an elliptical cross-section. The bottom wall of the magnetic stir bar 2 is parallel to the inner wall of the bottom end of the reagent bottle 1. In this way, the magnetic stir bar 2 can be fitted to the reagent bottle 1, avoiding slippage or jumping during the rotation of the magnetic stir bar 2, improving the stirring effect of the magnetic stir bar 2, avoiding the formation of dead zones, and achieving uniform mixing of the calibration solution.
[0057] It is understandable that the magnetic stir bar 2 is placed directly on the inner wall of the bottom end of the reagent bottle 1, with the magnetic stir bar 2 in contact with the inner wall of the bottom end of the reagent bottle 1, and the magnetic stir bar 2 is located at the center of the bottom wall of the reagent bottle 1.
[0058] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 1 and Figure 2 The stirring device also includes a cabinet 9, inside which is a refrigerator 10, and a tray 3 is placed in the refrigerator 10. This allows for the refrigeration of the reagent bottle 1 containing the calibration solution, maintaining a stable temperature of the calibration solution inside the reagent bottle 1 and reducing the turbidity measurement error after stirring the calibration solution.
[0059] In one embodiment of this disclosure, see [link to relevant documentation]. Figures 1 to 3 A motor support frame 11 is installed inside the cabinet 9, located below the refrigerator 10. A U-shaped frame 12 is mounted on top of the motor support frame 11, and the stirring motor 4 is installed on the U-shaped frame 12. The output shaft of the stirring motor 4 extends into the refrigerator 10 and connects to the strong magnet 5. The output shaft of the stirring motor 4 is rotatably connected to the bottom wall of the refrigerator 10. This improves the stability of the stirring motor 4 installation and facilitates the strong magnet 5 to drive the magnetic stir bar 2 to rotate via magnetic coupling, thereby improving the stirring effect of the magnetic stir bar 2.
[0060] Optionally, the two ends of the motor support frame 11 are connected to the inner wall of the cabinet 9 on the same side.
[0061] Optionally, the opening of the U-shaped frame 12 faces downward, and the U-shaped frame 12 is connected to the motor support frame 11 by screws.
[0062] Optionally, the stirring motor 4 is located inside the U-shaped frame 12, and the stirring motor 4 is mounted on the inner wall of the top of the U-shaped frame 12.
[0063] In one embodiment of this disclosure, see [link to relevant documentation]. Figure 3 The tray 3 has a placement groove 13 at its top, and a through hole 14 inside the placement groove 13. The strong magnet 5 is located below the through hole 14, and the strong magnet 5 is coaxially arranged with the through hole 14. In this way, the stability of the reagent bottle 1 can be improved, and the strong magnet 5 can drive the magnetic stir bar 2 to rotate through magnetic coupling, thereby improving the driving effect of the strong magnet 5 on the magnetic stir bar 2.
[0064] Alternatively, the number of placement slots 13 is the same as the number of strong magnets 5.
[0065] Optionally, through hole 14 covers strong magnet 5.
[0066] In one example, there are three reagent bottles 1. The tray 3 has three placement slots 13 with through holes 14. The three reagent bottles 1 are installed in the three placement slots 13 in sequence. A stirring motor 4 is installed below each reagent bottle 1. The output end of the stirring motor 4 is connected to a strong magnet 5. A magnetic stir bar 2 is placed in each reagent bottle 1. The three reagent bottles 1 are respectively filled with turbidity standard solutions of low standard, medium standard and high standard.
[0067] Optionally, baffles 6 can be detachably installed around the placement slot 13, and two adjacent placement slots 13 share one baffle 6.
[0068] In one embodiment of this disclosure, see Figure 1 and Figure 2A control box 15 is installed on one outer wall of the refrigerator 10, and a controller 16 is installed inside the control box 15. The controller 16 is electrically connected to the stirring motor 4. In this way, the stirring device can be automatically controlled, and the stirring efficiency can be improved.
[0069] Optionally, the control box 15 is equipped with a communication component, which is electrically connected to the controller 16 and wirelessly connected to the remote control component.
[0070] Optionally, the number of controllers 16 is the same as the number of stirring motors 4.
[0071] In one example, there are three controllers 16, which are used to control the stirring motors 4 corresponding to the reagent bottles 1 containing low-standard, medium-standard, and high-standard turbidity standard solutions, respectively.
[0072] In one embodiment of this disclosure, see Figures 1 to 4 The working process of the automatic stirring device for the online turbidity sensor calibration liquid is briefly described as follows:
[0073] In use, this method involves first filling reagent bottle 1 with turbidity standard solution, then placing magnetic stir bar 2 inside reagent bottle 1, with magnetic stir bar 2 resting on the inner wall of the bottom end of reagent bottle 1. Reagent bottle 1 is then installed on placement slot 13 located in refrigerator 10, aligning strong magnet 5 with the center of reagent bottle 1. Refrigerator 10 is then closed, and stirring motor 4 is started via controller 16, causing strong magnet 5 to rotate. Strong magnet 5, through magnetic force, drives magnetic stir bar 2 inside reagent bottle 1 to rotate, stirring the calibration solution inside reagent bottle 1. After stirring is complete, stirring motor 4 is turned off, reagent bottle 1 is removed, and a new reagent bottle 1 is installed.
[0074] Understandably, the magnetic stir bar 2 can be randomly placed into the reagent bottle 1 through the bottle opening, and the position where the magnetic stir bar 2 falls is not fixed. When the stirring motor 4 is started, under the action of the strong magnet 5, the magnetic stir bar 2 is attracted to the center of the bottom wall of the reagent bottle 1 and driven to rotate by the strong magnet 5.
[0075] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.
Claims
1. An automatic stirring device for online turbidity sensor calibration liquid, characterized in that, The stirring device includes: At least one reagent bottle (1), wherein at least one magnetic stir bar (2) is provided inside the reagent bottle (1); A tray (3) is provided below the reagent bottle (1), and the reagent bottle (1) is detachably installed on the top of the tray (3); A stirring motor (4) is located below the tray (3). A strong magnet (5) is provided at the output end of the stirring motor (4). There is a gap between the strong magnet (5) and the bottom wall of the reagent bottle (1). The strong magnet (5) can drive the magnetic stir bar (2) to rotate through magnetic coupling to stir the calibration solution in the reagent bottle (1).
2. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, At least one baffle (6) is detachably provided on the top of the tray (3), and the baffle (6) is located on the side of the reagent bottle (1).
3. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, The strong magnet (5) includes: Mounting plate (7) is provided at the output end of the stirring motor (4); Two strong magnetic sheets (8) are detachably mounted on the top sides of the mounting plate (7); There is a gap between the strong magnetic sheet (8) and the bottom wall of the reagent bottle (1).
4. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, The distance between the strong magnet (5) and the bottom wall of the reagent bottle (1) is 1 to 3 centimeters.
5. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, The reagent bottle (1) is a flat-bottomed bottle, and the cross-section of the magnetic stir bar (2) is elliptical; The bottom wall of the magnetic stir bar (2) is parallel to the inner wall of the bottom end of the reagent bottle (1).
6. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, The stirring device also includes a cabinet (9), inside which a refrigerator (10) is provided, and the tray (3) is placed in the refrigerator (10).
7. The automatic stirring device for online turbidity sensor calibration liquid according to claim 6, characterized in that, The cabinet (9) is equipped with a motor support frame (11), which is located below the refrigerator (10). A U-shaped frame (12) is provided at the top of the motor support frame (11), and the stirring motor (4) is installed on the U-shaped frame (12). The output shaft of the stirring motor (4) extends into the refrigerator (10) and is connected to the strong magnet (5). The output shaft of the stirring motor (4) is rotatably connected to the bottom wall of the refrigerator (10).
8. The automatic stirring device for online turbidity sensor calibration liquid according to claim 1, characterized in that, The tray (3) has a placement groove (13) at its top, and a through hole (14) is provided in the placement groove (13). The strong magnet (5) is located below the through hole (14), and the strong magnet (5) is coaxially arranged with the through hole (14).