A turbidity detection device

Abstract

The utility model relates to water quality monitoring sensor technical field, specifically disclose a turbidity detection device, through double -sided brush cleaning mechanism and high reduction ratio drive cooperation, realize the automatic efficient cleaning of light and light structure, reduce the impurity adhesion interference, and adopt the convex light surface to reduce the cleaning dead angle. The cleaning mechanism disturbs the water body and combines the temperature sensor that sets up near the cleaning structure, and the accurate compensation temperature influence. The limiting post and the fan -shaped cleaning area prevent the collision, and the flexible double -sided brush is blocked and skids and reduces the damage, and the clamping groove design improves the brush head dismounting convenience. The shell and the connecting column strengthen structure stability, adapt complex environment. The device has self -cleaning efficiency and temperature compensation ability, solve the light path pollution, temperature interference and inconvenient maintenance problem, significantly improve the detection reliability and environmental applicability.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring sensor technology, and more specifically, to a turbidity detection device. Background Technology

[0002] Online turbidity meters are key equipment in water treatment, environmental monitoring, and other fields. Currently, turbidity probes based on light scattering and light transmission methods face significant challenges in practical applications: First, the optical window, constantly immersed in complex water samples, is highly susceptible to contamination by biological slime, oil, or hard scale, leading to severe attenuation of the optical path and distorted measurements. Conventional ultrasonic cleaning or low-pressure water flushing has limited effectiveness against stubborn contaminants, requiring frequent manual maintenance. Second, the scattering and transmission characteristics of water, as well as the detector's sensitivity, are affected by temperature, causing measurement drift. While some products attempt to address individual problems, an integrated hardware solution that can simultaneously and efficiently solve both stubborn optical window contamination and temperature drift is lacking. Utility Model Content

[0003] The present invention aims to overcome at least one of the shortcomings of the prior art and provide a turbidity detection device with efficient self-cleaning and temperature compensation functions, which effectively solves the problems of stubborn contamination and temperature drift of the optical window.

[0004] The technical solution adopted by this utility model is to provide a turbidity detection device, including: a detection body and an epitaxial detection stage connected on one side; a liquid cavity communicating with the outside is provided between the detection body and the epitaxial detection stage; a first working surface is provided on the side of the detection body near the epitaxial detection stage; a light-emitting structure communicating with the liquid cavity is provided on the first working surface; a second working surface is provided on the side of the epitaxial detection stage near the detection body; a light-incoming structure communicating with the liquid cavity and matching the light-emitting structure is provided on the second working surface; a movable cleaning mechanism is provided in the liquid cavity; a driving device for driving the cleaning mechanism is provided in the detection body and is connected to one end of the cleaning mechanism; a temperature sensor is also provided on the first working surface, and the temperature sensor is located near the cleaning mechanism.

[0005] To reduce the difficulty of maintenance and assembly, the cleaning mechanism further includes a clamping body and a double-sided brush; the clamping body includes a first clamping end and a second clamping end; the first clamping end is used to clamp the double-sided brush; the second clamping end is used to connect to the driving device.

[0006] To balance stability and ease of assembly and disassembly, the double-sided brush further includes a flexible body and brush strips respectively disposed at the top and bottom of the flexible body; the side of the flexible body is provided with a recessed clamping groove; the brush strips are located in the same vertical plane.

[0007] To improve reliability, a limiting post is further provided on the first working surface so that the cleaning mechanism forms a fan-shaped cleaning area on the first and second working surfaces; the two fan-shaped cleaning areas respectively cover the surfaces of the light-emitting structure and the light-receiving structure; the temperature sensor avoids the fan-shaped cleaning area.

[0008] To protect the temperature sensor, a recessed mounting position is further provided on the first working surface. The mounting position avoids the fan-shaped cleaning area and is connected to the liquid cavity. The detection end of the temperature sensor is located within the mounting position.

[0009] To improve cleaning power and overcome long-term environmental obstacles, the drive device further includes a motor and a high reduction ratio transmission; the cleaning mechanism is connected to the motor through the high reduction ratio transmission.

[0010] To optimize volume and increase environmental adaptability, the horizontal cross-section of the detection body is larger than that of the extension detection stage; the second working surface is less than one-quarter of the first working surface; and the first working surface and the second working surface are parallel to each other.

[0011] To enhance the cleaning effect, the light-emitting structure further forms a convex light-emitting surface on the first working surface; the light-incoming structure forms a convex light-incoming surface on the second working surface; the light-emitting surface and the light-incoming surface match each other and their centers are located on the same straight line.

[0012] To increase structural stability, the turbidity detection device further includes a housing, which comprises a hollow upper shell, a connecting shell base, and a bottom plate; the connecting shell base cooperates with the upper shell to form the outer shell of the detection body; the connecting shell base cooperates with the bottom plate to form the outer shell of the epitaxial detection stage; and the connecting shell base is provided with a connecting channel communicating between the detection body and the epitaxial detection stage.

[0013] To avoid the effects of shaking and impact, the detection body further includes a control circuit board and an optical emission assembly; the optical emission assembly, driving device, and temperature sensor are electrically connected to the control circuit board; a plurality of connecting posts are provided on the side of the connecting housing near the upper housing; the optical emission assembly, driving device, temperature sensor, and control circuit board are connected to the connecting housing through the connecting posts.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) High-efficiency mechanical self-cleaning capability: Through the design of combining a high reduction ratio transmission device with a double-sided brush, it provides a high torque scraping capability that traditional turbidity probes do not have. It can effectively remove stubborn dirt (such as biofilm and hard scale) on the optical window, fundamentally solving the problem of dirt adhesion, realizing the automation of maintenance, and improving detection accuracy.

[0015] 2) Precise temperature compensation: A water sample temperature sensor is installed next to the cleaning unit to collect temperature data for temperature drift compensation. This enables the correction of key environmental factors that affect the accuracy of turbidity measurement and ensures measurement accuracy under all-weather conditions.

[0016] 3) High integration and robust durability: All functional modules are integrated into a compact, sealed housing. The robust structure facilitates integration and installation, making it ideal for various harsh environments for industrial online monitoring. Attached Figure Description

[0017] Figure 1 This is an overall diagram of a turbidity detection device provided by this utility model.

[0018] Figure 2 An exploded view of a turbidity detection device provided by this utility model.

[0019] Figure 3 This is a longitudinal cross-sectional view of the detection body and the epitaxial detection stage.

[0020] Figure 4 This is an exploded view of the cleaning facility.

[0021] Labeling: Detection body 1, epitaxial detection stage 2, liquid chamber 3, waterproof connector 4, upper shell 5, connecting shell base 6, base plate 7, first working surface 11, drive device 12, temperature sensor 13, control circuit board 14, optical emission assembly 15, second working surface 21, main detector 22, cleaning mechanism 31, connecting channel 61, connecting column 62, light emission structure 111, limiting column 112, mounting position 113, light source 151, beam splitter 152, reference detector 153, light intake structure 211, clamping body 311, double-sided brush 312, flexible body 3121, brush strip 3122, clamping groove 3123. Detailed Implementation

[0022] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] like Figures 1-4As shown, this embodiment provides a turbidity detection device, including: a detection body 1 and an epitaxial detection stage 2 connected on one side; a liquid cavity 3 communicating with the outside is provided between the detection body 1 and the epitaxial detection stage 2; a first working surface 11 is provided on the side of the detection body 1 near the epitaxial detection stage 2; a light-emitting structure 111 communicating with the liquid cavity 3 is provided on the first working surface 11; a second working surface 21 is provided on the side of the epitaxial detection stage 2 near the detection body 1; a light-incoming structure 211 communicating with the liquid cavity 3 and matching the light-emitting structure 111 is provided on the second working surface 21; a movable cleaning mechanism 31 is provided in the liquid cavity 3; a driving device 12 for driving the cleaning mechanism 31 is provided in the detection body 1 and is connected to one end of the cleaning mechanism 31; a temperature sensor 13 is also provided on the first working surface 11, and the temperature sensor 13 is provided near the cleaning mechanism 31.

[0024] The above solution achieves automatic cleaning through the cleaning mechanism 31 on the one hand, and triggers the flow of water through the cleaning mechanism 31 on the other hand, reducing the temperature difference between the liquid chamber and the surrounding water, and reducing the temperature impact caused by the continuous heating of the liquid chamber 3 by the optical path; at the same time, the temperature sensor 13 is close to the cleaning mechanism 31, so that the temperature measuring point is close to the source of water fluctuation, making the temperature measurement more accurate, and solving the problem that the detection optical path is easily affected by adhesion in the liquid environment, thus affecting the detection results.

[0025] The turbidity detection device further includes a housing and a waterproof connector 4. The waterproof connector 4 connects to the upper end of the housing. The housing includes a hollow upper shell 5, a connecting shell base 6, and a bottom plate 7. The connecting shell base 6 cooperates with the upper shell 5 to form the outer shell of the detection body 1. The connecting shell base cooperates with the bottom plate 7 to form the outer shell of the extended detection stage 2. The connecting shell base 6 has a connecting channel 61 that connects the detection body 1 and the extended detection stage 2. All functional modules are integrated into a compact, sealed housing, resulting in a robust structure. The connecting shell base 6 is located between the upper shell 5 and the bottom plate 7 and is integrally formed, which helps to improve structural strength, eliminate weak points, and improve connection stability.

[0026] To avoid the effects of shaking and impact, the detection body 1 includes a control circuit board 14 and an optical emission assembly 15. The optical emission assembly 15, the drive device 12, and the temperature sensor 13 are electrically connected to the control circuit board 14. The connecting housing 6 has several connecting posts 62 on the side near the upper housing 5. The optical emission assembly 15, the drive device 12, the temperature sensor 13, and the control circuit board 14 are connected to the connecting housing 6 via the connecting posts 62. The connecting posts 62 fix all components to the connecting housing 6, providing good relative position fixation, stability, and facilitating disassembly and maintenance.

[0027] The optical emission assembly 15 includes a light source 151, a beam splitter 152, and a reference detector 153; the epitaxial detection stage 2 is equipped with a main detector 22 whose position matches that of the light-inlet structure 211. The light emitted by the light source 151 (such as a near-infrared LED) is split into a measurement beam and a reference beam by the beam splitter 152; the measurement beam penetrates the beam splitter 152 and the light-outlet structure 111 and enters the water sample to be tested, and its scattered light enters the epitaxial detection stage 2 through the light-inlet structure 211 and is received by the main detector 22; the reference beam is reflected by the beam splitter 152 and is directly received by the reference detector 153 for real-time monitoring of the output light intensity of the light source 151. Through real-time feedback from the reference optical path, system errors caused by the aging of the light source itself or instantaneous fluctuations are eliminated, enabling the probe to maintain extremely high stability and reliability during long-term continuous operation.

[0028] To reduce the difficulty of maintenance and assembly, such as Figure 4 As shown, the cleaning mechanism 31 includes a clamping body 311 and a double-sided brush 312; the clamping body 311 includes a first clamping end and a second clamping end; the first clamping end is used to clamp the double-sided brush 312; the second clamping end is used to connect to the driving device 12. The double-sided brush 312 allows for simultaneous cleaning of the light-emitting structure 111 and the light-entering structure 211 on both sides of the liquid chamber 3; the clamping end facilitates quick replacement.

[0029] To balance stability and ease of assembly and disassembly, the double-sided brush 312 includes a flexible body 3121 and brush strips 3122 respectively disposed at the top and bottom of the flexible body 3121. The flexible body 3121 has a recessed clamping groove 3123 on its side. The brush strips 3122 are located in the same vertical plane. The flexible body 3121 reduces collision damage when obstructed and allows for slippage to avoid obstacles and complete reset. The recessed clamping groove 3123 facilitates quick alignment during assembly and disassembly of the brush strips 3122 and enhances stability. The brush strips 3122 are located outside the clamping groove 3123, separated from the groove by its edge, thus preventing the accumulation of foreign matter on the brush strips.

[0030] To improve reliability, a limiting post 112 is provided on the first working surface 11, so that the cleaning mechanism 31 forms a fan-shaped cleaning area on the first working surface 11 and the second working surface 21; the two fan-shaped cleaning areas respectively cover the surfaces of the light-emitting structure 111 and the light-incoming structure 211; the temperature sensor 13 avoids the fan-shaped cleaning area. The limiting post 112 further restricts the range of motion of the cleaning mechanism 31 to avoid collisions.

[0031] To protect the temperature sensor 13, a recessed mounting position 113 is provided on the first working surface 11. The mounting position 113 avoids the fan-shaped cleaning area and communicates with the liquid chamber 3. The detection end of the temperature sensor 13 is located within the mounting position 113. The recessed design of the mounting position 113 prevents the temperature sensor 13 from being exposed, reduces the adhesion of water sediment, and avoids external collision interference, effectively protecting the temperature sensor 13.

[0032] To enhance cleaning power and overcome long-term environmental obstacles, the drive unit 12 includes a motor and a high-reduction-ratio transmission; the cleaning mechanism 31 is connected to the motor via the high-reduction-ratio transmission. The high-reduction-ratio transmission is a gearbox with a transmission ratio as high as 1:500. The motor and transmission increase torque, allowing rotational resistance to be overcome, thereby enhancing cleaning power and influence on water flow.

[0033] To optimize volume and increase environmental adaptability, the horizontal cross-section of the detection body 1 is larger than that of the extension detection stage 2; the second working surface 21 is less than one-quarter of the first working surface 11; the first working surface 11 and the second working surface 21 are parallel to each other. Reducing the size of the extension detection stage 2 helps to reduce collisions, expands its applicable environment, and reduces weight, thus optimizing the impact of weight during suspension.

[0034] To enhance the cleaning effect, the light-emitting structure 111 forms a convex light-emitting surface on the first working surface 11; the light-incoming structure 211 forms a convex light-incoming surface on the second working surface 21; the light-emitting surface and the light-incoming surface match each other and their centers are located on the same straight line. The convex design of the light-emitting and light-incoming surfaces makes them easier to clean, and their edges are less likely to trap deposited particles, indirectly enhancing the cleaning effect.

[0035] This embodiment also provides a method for using the turbidity detection device: 1) Signal acquisition and processing: After immersing the end of the detection body 1 and the extended detection stage 2 of the turbidity detection device into the water sample to be tested, the control circuit board 14 synchronously acquires the signals of the main detector 22 and the reference detector 153.

[0036] 2) Compensation for light source 151: Calculate the ratio of the signal of the main detector 22 to the signal of the reference detector 153. This ratio is used to compensate for fluctuations in light source 151, that is, to eliminate the influence of changes in the intensity of light source 151 (aging or fluctuations) on the measurement.

[0037] 3) Temperature Compensation: Temperature sensor 13 is installed at the bottom of the probe housing, with its metal sensing surface in direct contact with the water sample, ensuring fast and accurate temperature measurement response. Control circuit board 14 reads the data from temperature sensor 13 and corrects the ratio using a preset temperature-turbidity compensation curve or algorithm within the control circuit board 14, eliminating errors introduced by water temperature changes and ultimately obtaining an accurate turbidity value.

[0038] 4) Intelligent Cleaning Control: The control circuit board 14 controls the cleaning mechanism 31 to operate according to a preset strategy. Specifically, the control circuit board 14 sends a command to the motor, and the output shaft of the motor is connected to the gear reducer. After being reduced in speed and torque, the gear reducer drives the double-sided brush 312 to reciprocate linearly against the outer surfaces of the light-emitting structure 111 and the light-receiving structure 211, mechanically scraping away the attached material. The preset strategy can be set to be triggered every 8 hours, or when the signal attenuation of the main detector 22 exceeds 15%, driving the double-sided brush 312 to work for one cycle (e.g., reciprocating scraping 3 times).

[0039] 5) Data communication: The final turbidity value, temperature value and equipment status information after processing are uploaded to the remote monitoring system or display header via RS-485 interface 12 using standard protocols such as Modbus-RTU.

[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A turbidity detection device, comprising: The detection body and the external detection station are connected on one side; A liquid cavity communicating with the outside is provided between the detection body and the epitaxial detection stage; The detection body has a first working surface on the side near the epitaxial detection stage; The first working surface is provided with a light-emitting structure that communicates with the liquid cavity; The epitaxial testing platform has a second working surface on the side closest to the testing body; The second working surface is provided with a light-incoming structure that communicates with the liquid cavity and matches the light-emitting structure; characterized in that... The liquid cavity is equipped with a movable cleaning mechanism; The detection body is equipped with a drive device that drives the cleaning mechanism and is connected to one end of the cleaning mechanism; The first working surface is also equipped with a temperature sensor, which is located near the cleaning mechanism.

2. The turbidity detection device according to claim 1, characterized in that, The cleaning mechanism includes: a clamping body and a double-sided brush; The clamping body includes: a first clamping end and a second clamping end; The first clamping end is used to clamp the double-sided brush; The second clamping end is used to connect to the drive device.

3. The turbidity detection device according to claim 2, characterized in that, The double-sided brush includes: a flexible body, and brush strips respectively disposed at the top and bottom of the flexible body; The flexible body has a recessed clamping groove on its side; The brush strips are located in the same vertical plane.

4. The turbidity detection device according to claim 1, characterized in that, The first working surface is provided with a limiting post so that the cleaning mechanism forms a fan-shaped cleaning area on the first working surface and the second working surface; Two fan-shaped cleaning zones respectively cover the surfaces of the light-emitting structure and the light-incoming structure; The temperature sensor avoids the fan-shaped cleaning area.

5. The turbidity detection device according to claim 4, characterized in that, The first working surface is provided with a recessed mounting position; The mounting position avoids the fan-shaped cleaning area; The mounting position is in communication with the liquid cavity; The detection end of the temperature sensor is located within the mounting position.

6. The turbidity detection device according to claim 1, characterized in that, The drive unit includes a motor and a high reduction ratio transmission device; The cleaning mechanism is connected to the motor via a high reduction ratio transmission device.

7. The turbidity detection device according to claim 1, characterized in that, The horizontal cross-section of the detection body is larger than that of the extensional detection stage; The second working surface is less than one-quarter of the first working surface; The first working surface and the second working surface are parallel to each other.

8. A turbidity detection device according to any one of claims 1-7, characterized in that, The light-emitting structure forms a convex light-emitting surface on the first working surface; The light-gathering structure forms a convex light-gathering surface on the second working surface; The light-emitting surface and the light-receiving surface are matched with each other, and their centers are located on the same straight line.

9. A turbidity detection device according to any one of claims 1-7, characterized in that, Includes a housing, the housing comprising: a hollow upper shell, a connecting shell base, and a bottom plate; The connecting housing and the upper housing cooperate to form the outer shell of the detection body; The connecting housing and the base plate cooperate to form the outer shell of the epitaxial testing stage; The connecting housing has a connecting channel that connects the detection body and the extension detection stage.

10. A turbidity detection device according to claim 9, characterized in that, The detection unit includes: a control circuit board and an optical emission assembly; The optical emission assembly, driving device, and temperature sensor are electrically connected to the control circuit board. The connecting housing is provided with several connecting posts on the side near the upper housing; The optical emission assembly, driving device, temperature sensor, and control circuit board are connected to the connecting housing via the connecting post.

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