Multifunctional turbidimeter
Patent Information
- Application Number
- CN202522529268.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-28
AI Technical Summary
Traditional turbidity meters have limited functionality, require multiple devices to detect water quality parameters, suffer from optical path interference leading to inaccurate detection, and are cumbersome to operate.
Design a multifunctional turbidity meter that integrates turbidity measurement and water quality detection functions. It adopts a specific optical layout and clamping mechanism, and a combined optical path design to avoid optical crosstalk. It uses multi-wavelength LED light sources and attenuators to optimize the optical signal-to-noise ratio, and uses the lever principle to fix the sample bottle.
It achieves stable and accurate multi-parameter measurement in a compact space, avoids optical crosstalk, improves detection accuracy and repeatability, and is adaptable to a wider turbidity measurement range.
Smart Images
Figure CN224933882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a turbidity meter, specifically a multifunctional turbidity meter, belonging to the field of detection instrument technology. Background Technology
[0002] A turbidimeter works by measuring the scattering or transmission of light in a liquid to infer the concentration or transparency of suspended particles. Turbidimeters mainly employ the transmitted light method and the scattered light method. The principle of the transmitted light method is to measure the intensity of the transmitted light after it passes through the water sample and compare it with the intensity of the incident light. The higher the turbidity, the weaker the transmitted light. The principle of the scattered light method (90° scattering method) is that the light source and the detector are placed at a 90° angle, and the intensity of light scattered by particles in the 90° direction is measured.
[0003] Traditional turbidimeters suffer from limited functionality, measuring only turbidity. Detecting other water quality parameters, such as COD, ammonia nitrogen, and specific ion concentrations, requires a separate spectrophotometer. This necessitates carrying multiple devices on-site, leading to high costs and cumbersome operation.
[0004] Turbidimeters and water quality analyzers use different optical systems. Stacking these two functional optical systems together can lead to optical path interference and structural complexity. For example, the strong light from transmission measurements may be reflected or scattered by the sample bottle wall, severely affecting the accuracy of scattering methods and photometric water quality analysis.
[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to propose a multifunctional turbidimeter. Utility Model Content
[0006] This invention addresses the shortcomings of the prior art by providing a multifunctional turbidity meter that integrates turbidity measurement and water quality detection functions. It effectively avoids crosstalk between different measurement optical paths and achieves stable and accurate multi-parameter measurement within a compact space.
[0007] To solve the above technical problems, the present invention adopts the following technical solution: The multifunctional turbidimeter includes a lower shell and an upper shell that are interlocked. A forward LED light source, a forward transmission sensor, a lateral LED light source, and a lateral sensor are installed in the cavity between the upper and lower shells. The forward LED light source and the forward transmission sensor are distributed on the front and rear sides of the sample bottle, while the lateral LED light source and the lateral sensor are distributed on the left and right sides of the sample bottle. The forward LED light source and the forward transmission sensor are located on the same horizontal plane. The lateral LED light source is located below the horizontal plane of the forward LED light source and the forward transmission sensor, while the lateral sensor is located above the horizontal plane of the forward LED light source and the forward transmission sensor.
[0008] Furthermore, the upper shell is provided with a placement hole for longitudinally placing the sample vials, and the lower shell is provided with a placement groove for placing the sample vials.
[0009] Furthermore, the lateral LED light source integrates light-emitting chips with multiple wavelengths, which can construct a monochromatic discontinuous spectrum.
[0010] Furthermore, the forward LED light source integrates light-emitting chips with multiple wavelengths.
[0011] Furthermore, the forward LED light source is used for both transmission and lateral scattering methods to measure water turbidity. An attenuator is installed in front of the forward transmission sensor, and both the attenuator and the forward transmission sensor are placed at an angle.
[0012] Furthermore, the optical density of the attenuator is 1.3.
[0013] Furthermore, the attenuator and the forward transmission sensor are positioned at a 45° angle to the emission direction of the forward LED light source.
[0014] Furthermore, the upper shell is provided with a protrusion, which is located near the placement hole. A clamping mechanism is installed at the bottom of the protrusion to fix the position of the sample bottle.
[0015] Furthermore, the clamping mechanism includes a cap, a pressure plate and a tower-shaped spring are installed between the cap and the protrusion, the middle of the pressure plate is hinged, one end of the pressure plate is connected to the tower-shaped spring, and the other end abuts against the outer wall of the sample bottle.
[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This invention utilizes a specific optical layout, such as an attenuator tilted at 45° and a forward transmission sensor, and light sources arranged on different horizontal planes, to combine the water quality detection optical path with the lateral scattering optical path for turbidity detection into one, sharing a single lateral sensor. The optical path is dual-purpose, capable of detecting water turbidity and performing water quality analysis, while effectively avoiding crosstalk between different measurement optical paths. Stable and accurate multi-parameter measurement is achieved within a compact space. The forward LED light source in this invention integrates multiple wavelengths. By utilizing the differences in refraction and scattering characteristics of different wavelengths in water, it can adapt to a wider turbidity measurement range. By adding an attenuator with a specific optical density, the transmitted light intensity under high turbidity samples is adjusted to the optimal detection range of the sensor, thereby obtaining the best signal-to-noise ratio. The clamping mechanism based on the lever principle and the tower spring in this invention can quickly and adaptively fix the sample bottle firmly in the preset optical center position, ensuring stable sample positioning and guaranteeing the repeatability and accuracy of each measurement.
[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention along point AA; Figure 3 This is a cross-sectional schematic diagram of the present invention along BB. Figure 4 This is a schematic diagram of the internal structure of this utility model; Figure 5 yes Figure 4 Top view of the structure; Figure 6 This is the optical path diagram of this utility model along the main viewing direction; Figure 7 This is the optical path diagram of this utility model from a top-down perspective.
[0019] In the figure, 1-lower shell, 2-upper shell, 3-placement hole, 4-sample bottle, 5-placement slot, 6-forward LED light source, 7-forward transmission sensor, 8-attenuator, 9-side LED light source, 10-side sensor, 11-protrusion, 12-tower-shaped spring, 13-pressure plate, 14-cap. Detailed Implementation
[0020] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.
[0021] like Figures 1-5 As shown in the figure, this utility model provides a multifunctional turbidimeter, including a lower shell 1 and an upper shell 2 that are fastened together. The upper shell 2 is provided with a placement hole 3 for longitudinally placing a sample bottle 4, and the lower shell 1 is provided with a placement groove 5 for placing the sample bottle 4.
[0022] The cavity between the upper shell 2 and the lower shell 1 is equipped with a forward LED light source 6, a forward transmission sensor 7, a lateral LED light source 9, and a lateral sensor 10; the forward LED light source 6 and the forward transmission sensor 7 are distributed on the front and rear sides of the sample bottle 4, and the lateral LED light source 9 and the lateral sensor 10 are distributed on the left and right sides of the sample bottle 4.
[0023] The lateral LED light source 9 integrates multiple wavelength light-emitting chips, which can construct a monochromatic discontinuous spectrum to realize water quality measurement and photometric analysis.
[0024] The forward LED light source 6 integrates multiple wavelength light-emitting chips, which can adapt to a wider turbidity measurement range by utilizing the refractive index characteristics of different wavelengths.
[0025] The forward LED light source 6 uses both transmission and side scattering methods to measure water turbidity. An attenuator 8 is installed in front of the forward transmission sensor 7. The light density of the attenuator 8 is 1.3. Both the attenuator 8 and the forward transmission sensor 7 are placed at an angle, and their positions are set at an angle of 45° to the emission direction of the forward LED light source 6.
[0026] By adjusting the light intensity received by the photocell of the forward transmission sensor 7 using attenuator 8, the detection signal range of the photocell is matched with the light intensity corresponding to the turbidity range measured by the transmission method, thus obtaining the optimal signal-to-noise ratio. The attenuator 8 and the forward transmission sensor 7 are placed at an angle to prevent the transmitted light from reflecting back into the sample vial 4 and interfering with the detection of lateral scattering.
[0027] The forward LED light source 6 and the forward transmission sensor 7 are located on the same horizontal plane. The lateral LED light source 9 is located below the horizontal plane where the forward LED light source 6 and the forward transmission sensor 7 are located, and the lateral sensor 10 is located above the horizontal plane where the forward LED light source 6 and the forward transmission sensor 7 are located.
[0028] Since the lateral LED light source 9 and the front LED light source 6 are not on the same horizontal plane, this height difference allows the optical path of lateral water quality detection to coincide with the lateral scattering optical path of turbidity detection, thus achieving dual-purpose optical path.
[0029] The upper shell 2 is provided with a protrusion 11, which is located near the placement hole 3. A clamping mechanism is installed at the bottom of the protrusion 11 to fix the position of the sample bottle 4.
[0030] The clamping mechanism includes a cap 14, a pressure plate 13 and a tower-shaped spring 12 installed between the cap 14 and the protrusion 11. The pressure plate 13 is hinged in the middle, with one end connected to the tower-shaped spring 12 and the other end abutting against the outer wall of the sample vial 4. The clamping mechanism, through the lever principle and the self-adaptive characteristics of the spring, ensures that the sample vial 4 is quickly and firmly fixed in the placement slot 5.
[0031] The specific working principle of this utility model is as follows: like Figure 6 and Figure 7 As shown, the lateral LED light source 9 is positioned at the lower right of the sample bottle 4, and the lateral sensor 10 is positioned at the upper left of the sample bottle 4. The center of the light emitted by the lateral LED light source 9 forms a 26.6° angle with the lateral sensor 10. Simultaneously, the lateral scattered light generated by the front LED light source 6 illuminating the sample bottle 4 is received by the lateral sensor 10 at an angle of 21.8014°. The lateral LED light source 9 and the lateral sensor 10 are designed with an angle, which avoids the influence of reflected light on the scattering measurement during turbidity transmission detection, and also increases the absorption optical path of lateral water quality detection, thereby improving the detection limit.
[0032] This invention combines the water quality detection optical path and the lateral scattering optical path for turbidity detection into one through a specific optical layout, using a single lateral sensor. The optical path is dual-purpose, enabling both water turbidity detection and water quality analysis.
[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.
Claims
1. A multifunctional turbidimeter, characterized in that: The sample bottle (4) includes a lower shell (1) and an upper shell (2) that are connected to each other by interlocking. A forward LED light source (6), a forward transmission sensor (7), a side LED light source (9), and a side sensor (10) are installed in the cavity between the upper shell (2) and the lower shell (1). The forward LED light source (6) and the forward transmission sensor (7) are distributed on the front and rear sides of the sample bottle (4), and the side LED light source (9) and the side sensor (10) are distributed on the left and right sides of the sample bottle (4). The forward LED light source (6) and the forward transmission sensor (7) are located in the same horizontal plane. The side LED light source (9) is located below the horizontal plane of the forward LED light source (6) and the forward transmission sensor (7), and the side sensor (10) is located above the horizontal plane of the forward LED light source (6) and the forward transmission sensor (7).
2. The multifunctional turbidimeter as described in claim 1, characterized in that: The upper shell (2) is provided with a placement hole (3) for longitudinal placement of the sample bottle (4), and the lower shell (1) is provided with a placement groove (5) for placing the sample bottle (4).
3. The multifunctional turbidimeter as described in claim 1, characterized in that: The side-facing LED light source (9) integrates multiple wavelength light-emitting chips, which can construct a monochromatic discontinuous spectrum.
4. The multifunctional turbidimeter as described in claim 1, characterized in that: The forward LED light source (6) integrates multiple wavelength light-emitting chips.
5. The multifunctional turbidimeter as described in claim 1, characterized in that: The forward LED light source (6) is used for both transmission and side scattering methods to measure water turbidity. An attenuator (8) is installed in front of the forward transmission sensor (7). Both the attenuator (8) and the forward transmission sensor (7) are placed at an angle.
6. The multifunctional turbidimeter as described in claim 5, characterized in that: The optical density of the attenuator (8) is 1.
3.
7. The multifunctional turbidimeter as described in claim 5, characterized in that: The attenuator (8) and the forward transmission sensor (7) are positioned at an angle of 45° to the emission direction of the forward LED light source (6).
8. The multifunctional turbidimeter as described in claim 1, characterized in that: The upper shell (2) is provided with a protrusion (11), which is located near the placement hole (3). A clamping mechanism is installed at the bottom of the protrusion (11) to fix the position of the sample bottle (4).
9. The multifunctional turbidimeter as described in claim 8, characterized in that: The clamping mechanism includes a cover (14), a pressure plate (13) and a tower spring (12) are installed between the cover (14) and the protrusion (11). The middle part of the pressure plate (13) is hinged. One end of the pressure plate (13) is connected to the tower spring (12), and the other end abuts against the outer wall of the sample bottle (4).