Water turbidity online detector
By designing a top-down water column detection method and an online turbidity detector with a 90° angle between incident and scattered light, the problem of detection channel contamination was solved, achieving automated and real-time turbidity detection and reducing maintenance workload.
Patent Information
- Application Number
- CN202520177463.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-27
AI Technical Summary
The detection channel of existing turbidity measurement devices is easily contaminated by impurities in water samples, affecting the measurement results and requiring frequent cleaning.
Design an online water turbidity detector that uses a top-down water column detection method to avoid contact between the detection channel and the water sample. Employ a 90° angle setting between incident and scattered light and utilize a light source and receiving device to achieve automatic detection, thereby reducing impurity contamination.
It effectively avoids contamination of the detection channel, reduces maintenance workload, reduces labor costs, and achieves automated and real-time turbidity detection.
Smart Images
Figure CN223597527U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water quality testing technology, specifically relating to an online water turbidity detector. Background Technology
[0002] Turbidity measurement is of great significance for both industrial and domestic water use. Turbidity is primarily measured using specialized turbidity measuring devices. Common turbidity measuring devices employ transmission and scattering methods. The transmission method calculates the attenuation of light after passing through water, while the scattering method measures the intensity of light scattered at a 90-degree angle to the incident light. The turbidity value of the water sample is obtained by analyzing the correlation between the scattered light and turbidity.
[0003] In existing technologies, devices for measuring turbidity using the scattering method mainly include a flow channel for the water sample to flow through and a detection optical path for detecting the turbidity value of the water sample. Incident light in the detection optical path irradiates the water sample flowing through the flow channel and is scattered. The intensity of the scattered light is detected to obtain the turbidity value of the water sample. During long-term measurements, this device is easily contaminated by impurities in the water sample because the flow channel is in constant contact with it. When impurities are present at the location where the detection optical path passes through the flow channel, they will affect the measurement results, requiring frequent cleaning. Utility Model Content
[0004] This invention proposes an online water turbidity detector that can directly detect a water column from top to bottom, preventing the detection channel from contacting the water sample to be tested, fundamentally avoiding water sample contamination of the optical path, eliminating the influence of dirt on the measurement results, and eliminating the need for instrument cleaning.
[0005] Therefore, the technical solution adopted by this utility model is as follows: an online water turbidity detector, including a shell, a detection chamber for turbidity detection is provided inside the shell, an inlet channel for the water sample to be tested to enter and communicate with the detection chamber is vertically provided in the upper end of the shell, a drain channel for the water sample to be tested to flow out and communicate with the detection chamber is vertically provided in the lower end of the shell, the drain channel is located directly below the inlet channel, an incident channel for incident light to pass through and communicate with the detection chamber is provided inside the shell, a receiving channel for receiving scattered light and communicate with the detection chamber is provided inside the shell, the angle between the incident channel and the receiving channel is 90°, a light source device for emitting incident light is provided at the end of the incident channel away from the detection chamber, and a receiving device is provided at the end of the receiving channel away from the detection chamber.
[0006] As a preferred embodiment of the above scheme, the outer shell is provided with a processing channel that runs through the front and back and communicates with the detection cavity. A viewing window plug is provided at the front end of the processing channel, and a first vent plug is provided at the rear end of the processing channel.
[0007] In a further preferred embodiment, both the incident channel and the receiving channel are located at the upper end of the housing, and the lower end of the housing is provided with a vertically arranged light-absorbing well for absorbing stray light. The light-absorbing well is connected to the detection cavity through a light-absorbing channel, and the lower end of the light-absorbing well is provided with a second vent plug.
[0008] Further preferably, the water inlet channel is provided with a water inlet pipe, and the end of the water inlet channel away from the detection chamber is provided with a fixing joint for fixing the upper end of the water inlet pipe, and the lower end of the water inlet pipe is provided with a fixing component for fixing the water inlet pipe. The drainage channel is provided with a drainage pipe that can absorb light, and the end of the drainage channel away from the detection chamber is provided with a drainage joint for fixing the drainage pipe.
[0009] In a further preferred embodiment, the detection cavity is provided with a light-absorbing inner shell, and the light-absorbing inner shell is provided with through holes at the positions corresponding to the water inlet channel, the water outlet channel, the incident channel and the receiving channel. The drain pipe and the water inlet pipe both extend into the light-absorbing inner shell, and the upper end of the drain pipe is not higher than the light-absorbing inner shell.
[0010] In a further preferred embodiment, the end of the drain connector away from the outer casing is provided with a drain funnel for easy collection of the discharged water sample, and the drain funnel and the drain connector are connected by a plug or thread.
[0011] Further preferably, the receiving device includes a receiver mounted on the receiving channel via a receiving bracket, and the light source device includes a control board and a light source mounted on the incident channel. Both the incident channel and the receiving channel are provided with optical lenses for filtering and collimation, and both the incident channel and the receiving channel are provided with a sealing cover at the end away from the detection cavity. The sealing cover is embedded in the corresponding channel, and a sealing ring is provided between the sealing cover and the corresponding channel.
[0012] Further preferably, the housing is provided with a wire passage for the control board and the receiver to pass through, and the wire passage includes a first channel communicating with the incident channel, a second channel communicating with the receiver and a third channel communicating with the outside of the housing, and the third channel is provided with a wire connector.
[0013] Further preferably, the outer casing is provided with a detection device for detecting that the outer casing is in a horizontal state, and the detection device includes a horizontal detection sensor vertically embedded in the outer casing.
[0014] Further preferably, the inner diameter of the drainage channel is larger than that of the water inlet channel.
[0015] The beneficial effects of this invention are as follows: During testing, the water sample to be tested, under the action of gravity, flows through the inlet channel, the detection chamber, and the outlet channel in sequence and is directly discharged. The incident light emitted by the light source device illuminates the water column in the detection chamber after passing through the incident channel, causing scattering. The scattered light passes through the receiving channel and is received by the receiving device. Finally, the turbidity of the water sample to be tested is obtained by calculating the intensity of the scattered light. Throughout the process, the water sample to be tested does not come into contact with the inner wall of the detection chamber, so that no dirt that affects the test results will be generated in the detection chamber during long-term testing, thereby reducing the workload of maintenance and reducing labor costs. At the same time, by automatically controlling the entry and exit of the water sample to be tested, automatic measurement can be achieved, which is convenient for real-time detection of water sample turbidity. Attached Figure Description
[0016] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 .
[0017] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 .
[0018] Figure 3 This is a schematic diagram of the present utility model. Figure 3 .
[0019] Figure 4 This is a schematic diagram of the wire passage in this utility model.
[0020] Figure 5 This is a three-dimensional schematic diagram of the outer shell of this utility model. Figure 1 .
[0021] Figure 6 This is a schematic diagram of the outer shell in this utility model. Figure 2 .
[0022] Figure 7 This is a schematic diagram of the light-absorbing inner shell in this utility model.
[0023] Reference numerals: Outer shell - 1, Detection chamber - 1a, Water inlet channel - 1b, Drainage channel - 1c, Incident channel - 1d, Receiving channel - 1f, Processing channel - 1e, Light-absorbing well - 1g, Light-absorbing channel - 1h, Viewing window plug - 4, First vent plug - 5, Second vent plug - 6, Light-absorbing inner shell - 7, Water inlet pipe - 8, Fixed connector - 9, Drainage pipe - 10, Drainage connector - 11, Drainage funnel - 12, Receiving bracket - 13, Receiver - 14, Control board - 15, Light source - 16, Light lens - 17, Sealing cover - 18, Cable connector - 19. Detailed Implementation
[0024] The present invention will be further described below with reference to embodiments and accompanying drawings:
[0025] like Figures 1-7 As shown, an online water turbidity detector mainly consists of a housing 1, a light source device, and a receiving device. The light source device is used to generate incident light, and the receiving device is used to receive the 90° scattered light generated after the incident light passes through the water sample to be tested. The turbidity of the water sample to be tested is obtained based on the received scattered light. The housing is used to allow the incident light to pass through the water sample to be tested and to install the light source device and the receiving device.
[0026] A detection chamber 1a for turbidity detection is provided inside the outer casing 1. A water inlet channel 1b is vertically arranged in the upper part of the outer casing 1, allowing the water sample to enter and communicating with the detection chamber 1a. A drainage channel 1c is vertically arranged in the lower part of the outer casing 1, allowing the water sample to flow out and communicating with the detection chamber 1a, with the drainage channel 1c located directly below the water inlet channel 1b. To ensure that the water sample can flow smoothly out along the drainage channel, the inner diameter of the drainage channel 1c is larger than that of the water inlet channel 1b. During installation, the outer casing is kept horizontal so that the water sample, under the action of gravity, forms a water column and flows sequentially through the water inlet channel, the detection chamber, and the drainage channel. This not only facilitates automatic water inlet and outlet but also prevents the water sample from contacting the detection chamber wall, thus preventing the formation of dirt on the detection chamber wall and ensuring that the instrument does not require cleaning.
[0027] To achieve scattering detection, an incident channel 1d is provided inside the housing 1 for incident light to pass through and communicates with the detection cavity 1a. Simultaneously, a receiving channel 1f is provided inside the housing 1 for receiving scattered light and communicates with the detection cavity 1a. The angle between the incident channel 1d and the receiving channel 1f is 90°. The light source device is located at the end of the incident channel 1d away from the detection cavity 1a, and the receiving device is located at the end of the receiving channel 1f away from the detection cavity 1a. Preferably, both the incident channel and the receiving channel are located at the upper end of the housing, i.e., the incident channel and the receiving channel are symmetrically arranged about the left and right sides of the water inlet channel.
[0028] The water inlet channel 1b, drainage channel 1c, incident channel 1d, and receiving channel 1f are all connected to the outer side of the outer casing on the side away from the detection chamber. To facilitate the processing of the detection chamber, a processing channel 1e is provided on the outer casing 1, which runs through the front and back and is connected to the detection chamber 1a. A viewing window plug 4 is provided at the front end of the processing channel 1e to facilitate observation of the detection chamber status, and a first vent plug 5 is provided at the rear end of the processing channel 1e. To prevent the outer casing from not being able to maintain verticality after the first vent plug is installed, an installation groove for installing the first vent plug is provided on the outer casing, and the upper and lower ends of the installation groove are connected to the upper and lower ends of the outer casing.
[0029] To reduce the influence of stray light, a vertically positioned light-absorbing well 1g is provided at the lower end of the outer shell 1 for absorbing stray light. The light-absorbing well 1g is connected to the detection cavity 1a through a light-absorbing channel 1h. Preferably, two light-absorbing wells are symmetrically arranged on the left and right sides of the lower end of the outer shell. To facilitate the processing of the light-absorbing wells, the lower end of the light-absorbing well is connected to the lower end of the outer shell. At the same time, a second vent plug 6 is provided at the lower end of the light-absorbing well 1g, and the space between the first vent plug and the second vent plug is sealed with a breathable but opaque sponge.
[0030] To facilitate the entry of the water sample to be tested, an inlet pipe 8 is installed in the inlet channel 1b, with its upper end protruding above the outer shell. To secure the inlet pipe, a fixing connector 9 is provided at the end of the inlet channel 1b furthest from the detection chamber 1a to fix the upper end of the inlet pipe 8. Simultaneously, to ensure the inlet pipe is accurately positioned between the injection channel and the receiving channel, a fixing assembly is provided at the lower end of the inlet pipe 8. The fixing assembly includes a large fixing end at the lower end of the inlet pipe, with a countersunk hole for bolts to pass through. Both the injection channel and the receiving channel are located below the large fixing end. Preferably, a connector for easy connection to a pipeline is provided at the upper end of the inlet pipe. During testing, the water sample can pass through the pipeline and reach the inlet pipe. To facilitate control of the water sample detection, a water pump and valve, or other automatic control device for the entry of the water sample, can be installed on the pipeline.
[0031] To facilitate the discharge of the water sample to be tested, a light-absorbing drain pipe 10 is installed in the drain channel 1c, and a drain connector 11 for fixing the drain pipe 10 is provided at the end of the drain channel 1c away from the detection chamber 1a. Preferably, a drain funnel 12 for collecting the discharged water sample is provided at the end of the drain connector 11 away from the outer casing 1, and the drain funnel and the drain connector are connected by a plug or thread, and the pipe connected to the drain funnel is a black pipe to prevent the reflection of stray light.
[0032] To further reduce the influence of stray light, a light-absorbing inner shell 7 is embedded within the detection cavity. Through holes are provided on the inner shell 7 at positions corresponding to the water inlet channel 1b, drain channel 1c, incident channel 1d, receiving channel 1f, and light-absorbing channel 1h. To facilitate the fixation of the inner shell, both the drain pipe 10 and the water inlet pipe 8 extend into the inner shell 7, with the upper end of the drain pipe 10 not exceeding the inner shell 7, ensuring that the water sample can be smoothly discharged through the drain pipe. To reduce the distance between the incident and receiving channels and the water sample, an inwardly extending section is provided at the upper end of the inner shell, with extension through holes corresponding to the incident and receiving channels, respectively. The design of the inner shell, water inlet pipe, and drain pipe also effectively prevents the formation of dirt after prolonged contact between the water sample and the outer shell.
[0033] The receiving device includes a receiver 14 mounted on the receiving channel 1f via a receiving bracket 13. The light source device includes a control board 15 and a light source 16 mounted on the incident channel 1d. To ensure the detection results, both the incident channel 1d and the receiving channel 1f are equipped with optical lenses 17 for filtering and collimation, and both the incident channel 1d and the receiving channel 1f have sealing caps 18 at their ends away from the detection cavity. Preferably, the sealing caps 18 are embedded in the corresponding channels, and a sealing ring is provided between the sealing caps and the corresponding channels.
[0034] A wiring channel is provided inside the housing 1 for the wires on the control board 15 and the receiver 14 to pass through. The wiring channel includes a first channel communicating with the incident channel, a second channel communicating with the receiver, and a third channel communicating with the outside of the housing. A wiring connector 19 is provided on the third channel. Figure 4 As shown. Ideally, the first and second channels should communicate with the space between the sealing cap and the corresponding components.
[0035] To facilitate securing the entire instrument, countersunk holes are provided on the outer casing for bolts to pass through and secure the casing. To ensure that both the inlet and outlet water channels are vertical after the instrument is secured, a detection device is provided on the outer casing to detect whether the casing is horizontal. This detection device can be configured to include a horizontal sensor embedded within the casing.
[0036] To reduce the overall size of the instrument, it is best to have two symmetrically inclined surfaces on the upper part of the housing. Correspondingly, to ensure the installation of the entire housing, the upper end of the mounting slot should be set as the smaller end. Ideally, the horizontal detection sensor should be placed on the front side of the water inlet pipe, and the wire passage should be placed on the rear side of the water inlet pipe. In addition, to prevent incorrect installation of the first vent plug and the viewing window plug, an identification mark should be provided on the end of the housing used to install the viewing window plug.
[0037] In use, this device connects to the water sample to be tested through a pipe. Under the action of the force within the pipe, the water sample enters the inlet pipe. Then, under the action of gravity, the water sample passes through the inlet pipe, the light-absorbing inner shell cavity, and the drain pipe in sequence. The control board controls the light source to emit incident light. After passing through the incident channel, the incident light shines on the water column in the detection chamber and is scattered. The scattered light, which is at a 90° angle to the incident light, passes through the receiving channel and is received by the receiver. The receiver obtains the turbidity of the water sample by the intensity of the received light signal.
Claims
1. An online water turbidity analyzer, characterized in that: The device includes an outer shell (1), inside which is a detection chamber (1a) for turbidity detection. A water inlet channel (1b) is vertically arranged in the upper end of the outer shell (1) for the water sample to be tested to enter and communicating with the detection chamber (1a). A drainage channel (1c) is vertically arranged in the lower end of the outer shell (1) for the water sample to be tested to flow out and communicating with the detection chamber (1a). The drainage channel (1c) is located directly below the water inlet channel (1b). The outer casing (1) is provided with an incident channel (1d) for allowing incident light to pass through and communicating with the detection cavity (1a). The outer casing (1) is provided with a receiving channel (1f) for receiving scattered light and communicating with the detection cavity (1a). The angle between the incident channel (1d) and the receiving channel (1f) is 90°. A light source device for emitting incident light is provided at the end of the incident channel (1d) away from the detection cavity (1a). A receiving device is provided at the end of the receiving channel (1f) away from the detection cavity (1a).
2. The online turbidity analyzer according to claim 1, characterized in that: The outer shell (1) is provided with a processing channel (1e) that runs through the front and back and is connected to the detection cavity (1a). A viewing window plug (4) is provided at the front end of the processing channel (1e), and a first vent plug (5) is provided at the rear end of the processing channel (1e).
3. The online water turbidity detector according to claim 1, characterized in that: The incident channel (1d) and the receiving channel (1f) are both located at the upper end of the outer shell (1). The lower end of the outer shell (1) is provided with a vertically arranged light-absorbing well (1g) for absorbing stray light. The light-absorbing well (1g) is connected to the detection cavity (1a) through a light-absorbing channel (1h). The lower end of the light-absorbing well (1g) is provided with a second vent plug (6).
4. The online water turbidity detector according to claim 1, characterized in that: The water inlet channel (1b) is provided with a water inlet pipe (8), and a fixing connector (9) for fixing the upper end of the water inlet pipe (8) is provided at the end of the water inlet channel (1b) away from the detection chamber (1a). A fixing component for fixing the water inlet pipe (8) is provided at the lower end of the water inlet pipe (8). The drainage channel (1c) is provided with a drainage pipe (10) that can absorb light, and a drainage connector (11) for fixing the drainage pipe (10) is provided at the end of the drainage channel (1c) away from the detection chamber (1a).
5. The online water turbidity detector according to claim 4, characterized in that: The detection cavity (1a) is provided with a light-absorbing inner shell (7), and the light-absorbing inner shell (7) is provided with through holes at the positions corresponding to the water inlet channel (1b), the drain channel (1c), the incident channel (1d) and the receiving channel (1f). The drain pipe (10) and the water inlet pipe (8) both extend into the light-absorbing inner shell (7), and the upper end of the drain pipe (10) is not higher than the light-absorbing inner shell (7).
6. The online water turbidity detector according to claim 4, characterized in that: The drain connector (11) is provided with a drain funnel (12) at the end away from the outer shell (1) to facilitate the collection of the discharged water sample, and the drain funnel and the drain connector are connected by plug or thread.
7. The online water turbidity detector according to claim 1, characterized in that: The receiving device includes a receiver (14) mounted on the receiving channel (1f) via a receiving bracket (13). The light source device includes a control board (15) and a light source (16) mounted on the incident channel (1d). Both the incident channel (1d) and the receiving channel (1f) are provided with optical lenses (17) for filtering and collimation. Both the incident channel (1d) and the receiving channel (1f) are provided with a sealing cover (18) at the end away from the detection cavity. The sealing cover (18) is embedded in the corresponding channel, and a sealing ring is provided between the sealing cover and the corresponding channel.
8. The online turbidity analyzer according to claim 7, characterized in that: The housing (1) is provided with a wire passage for the wires on the control board (15) and receiver (14) to pass through. The wire passage includes a first channel communicating with the incident channel, a second channel communicating with the receiver and a third channel communicating with the outside of the housing. The third channel is provided with a wire connector (19).
9. The online water turbidity detector according to claim 1, characterized in that: The outer casing is provided with a detection device for detecting whether the outer casing is in a horizontal state. The detection device includes a horizontal detection sensor that is vertically embedded in the outer casing.
10. The online water turbidity detector according to claim 1, characterized in that: The inner diameter of the drainage channel (1c) is larger than that of the water inlet channel (1b).