Non-contact turbidity detection device
By designing a non-contact turbidity detection device, the water inlet and drainage channels are used to directly detect top-down water columns, the problem of easy contamination in the detection channels in the prior art is solved, and efficient and automatic turbidity detection is achieved.
Patent Information
- Application Number
- CN202510126409.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2025-03-28
AI Technical Summary
The existing turbidity detection device is easily contaminated by impurities in water samples during long-term use, which affects the measurement results and requires frequent cleaning.
A non-contact turbidity detection device is designed to directly detect top-down water columns through the water inlet and drainage channels to avoid contact with the water sample to be tested, thereby preventing contamination.
It effectively avoids the pollution of water samples on the light path, eliminates the impact of dirt on the measurement results, reduces maintenance workload, reduces labor costs, and realizes automatic measurement and real-time detection.
Smart Images
Figure CN119715467A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of water quality detection, and in particular relates to a non-contact turbidity detection device. Background Art
[0002] Turbidity measurement of water quality is of great significance to both industrial and domestic water use. Turbidity measurement of water quality is mainly carried out through special turbidity measurement devices. Currently, common turbidity measurement devices are carried out through transmission method and scattering method. The transmission method calculates the attenuation of light after passing through the water body, and the scattering method measures the intensity of scattered light at 90 degrees to the incident light. The turbidity value of the water sample is obtained through the corresponding relationship between scattered light and turbidity.
[0003] In the prior art, the device for measuring turbidity by scattering method mainly includes a flow channel for the water sample to be tested to flow and a detection light path for detecting the turbidity value of the water sample. The incident light in the detection light path irradiates the water sample to be tested flowing through the flow channel and then scatters. The intensity of the scattered light is detected to obtain the turbidity value of the water sample. In long-term measurement, the device is easily contaminated by impurities in the water sample because the flow channel is in contact with the water sample to be tested for a long time. When impurities exist at the position on the flow channel where the detection light path passes, it will affect the measurement results and needs to be cleaned frequently. Summary of the invention
[0004] The present invention proposes a non-contact turbidity detection device, which can directly detect the water column from top to bottom, prevent the detection channel from contacting the water sample to be tested, fundamentally avoid the contamination of the light path by the water sample, eliminate the influence of dirt on the measurement result, and no longer need to clean the instrument.
[0005] To this end, the technical solution adopted by the present invention is: a non-contact turbidity detection device, comprising a shell, a detection cavity for realizing turbidity detection is arranged in the shell, a water inlet channel for entering the water sample to be tested and connected with the detection cavity is vertically arranged in the upper end of the shell, a drainage channel for outflowing the water sample to be tested and connected with the detection cavity is vertically arranged in the lower end of the shell, the drainage channel is located directly below the water inlet channel, an incident channel for passing incident light and connected with the detection cavity is arranged in the shell, a receiving channel for receiving scattered light and connected with the detection cavity is arranged in the shell, the angle between the incident channel and the receiving channel is 90°, a light source device for emitting incident light is arranged at one end of the incident channel away from the detection cavity, and a receiving device is arranged at one end of the receiving channel away from the detection cavity.
[0006] As a preferred embodiment of the above scheme, the shell is provided with a processing channel which runs through from front to back and communicates with the detection cavity, the front end of the processing channel is provided with a window plug, and the rear end of the processing channel is provided with a first air-permeable plug.
[0007] Further preferably, the incident channel and the receiving channel are both arranged at the upper end of the shell, and a vertically arranged light absorption well for absorbing stray light is provided at the lower end of the shell, the light absorption well is connected to the detection cavity through the light absorption channel, and a second air permeable plug is provided at the lower end of the light absorption well.
[0008] Further preferably, a water inlet pipe is provided in the water inlet channel, and a fixed joint for fixing the upper end of the water inlet pipe is provided at the end of the water inlet channel away from the detection chamber, a fixed component for fixing the water inlet pipe is provided at the lower end of the water inlet pipe, a drain pipe capable of absorbing light is provided in the drainage channel, and a drain joint for fixing the drain pipe is provided at the end of the drainage channel away from the detection chamber.
[0009] Further preferably, a light-absorbing inner shell is provided in the detection cavity, and through holes are provided on the light-absorbing inner shell at positions corresponding to the water inlet channel, the drainage channel, the incident channel and the receiving channel, the drainage pipe and the water inlet pipe are both extended into the light-absorbing inner shell, and the upper end of the drainage pipe is not higher than the light-absorbing inner shell.
[0010] Further preferably, a drainage funnel for collecting the discharged water sample is provided at one end of the drainage joint away from the housing, and the drainage funnel is plug-in or threadedly connected to the drainage joint.
[0011] Further preferably, the receiving device includes a receiver arranged on the receiving channel through a receiving bracket, the light source device includes a control panel and a light source arranged on the incident channel, the incident channel and the receiving channel are both provided with light lenses for filtering and collimation, and the incident channel and the receiving channel are both provided with sealing covers at one end away from the detection cavity, the sealing covers are embedded in the corresponding channel, and a sealing ring is provided between the sealing cover and the corresponding channel.
[0012] Further preferably, a wire passing channel for the wires on the control panel and the receiver to pass through is provided in the shell, and the wire passing channel includes a first channel connected to the incident channel, a second channel connected to the receiver and a third channel connected to the outside of the shell, and a wire passing connector is provided on the third channel.
[0013] Further preferably, a detection device for detecting whether the shell is in a horizontal state is arranged on the shell, and the detection device includes a horizontal detection sensor vertically embedded in the shell.
[0014] Further preferably, the inner diameter of the drainage channel is larger than that of the water inlet channel.
[0015] The beneficial effects of the present invention are as follows: during detection, under the action of gravity, the water column of the water sample to be tested passes through the water inlet channel, the detection chamber and the drainage channel in sequence and is directly discharged; the incident light emitted by the light source device irradiates the water column in the detection chamber after passing through the incident channel and is scattered; the scattered light passes through the receiving channel and is received by the receiving device, and finally the turbidity of the water sample to be tested is obtained by converting the intensity of the scattered light; during the whole process, the water sample to be tested does not contact the inner wall of the detection chamber, so that during the long-term detection process, no dirt that affects the detection result will be generated in the detection chamber, thereby reducing the maintenance workload 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 the turbidity of the water sample. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional schematic diagram of the present invention Figure 1 .
[0017] Figure 2 A three-dimensional schematic diagram of the present invention Figure 2 .
[0018] Figure 3 For the purpose of illustrating the present invention Figure 3 .
[0019] Figure 4 It is a schematic diagram of the wire passage in the present invention.
[0020] Figure 5 A three-dimensional schematic diagram of the housing in the present invention Figure 1 .
[0021] Figure 6 Schematic diagram of the housing in the present invention Figure 2 .
[0022] Figure 7 Schematic diagram of the light-absorbing inner shell of the present invention.
[0023] Figure markings: outer shell -1, detection cavity -1a, water inlet channel -1b, drainage channel -1c, incident channel -1d, receiving channel -1f, processing channel -1e, light absorption well -1g, light absorption channel -1h, window plug -4, first air permeable plug -5, second air permeable plug -6, light absorption inner shell -7, water inlet pipe -8, fixed joint -9, drainage pipe -10, drainage joint -11, drainage funnel -12, receiving bracket -13, receiver -14, control panel -15, light source -16, optical lens -17, sealing cover -18, wire joint -19. DETAILED DESCRIPTION
[0024] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:
[0025] like Figure 1-Figure 7As shown, a non-contact turbidity detection device is mainly composed of a shell 1, a light source device and a receiving device, wherein the light source device is used to generate incident light, and the receiving device is used to receive 90° scattered light generated after the incident light passes through the water sample to be tested, and the turbidity of the water sample to be tested is obtained according to the received scattered light, and the shell is used to enable 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 in the housing 1, a water inlet channel 1b for the water sample to be tested to enter and communicate with the detection chamber 1a is vertically provided in the upper end of the housing 1, and a drainage channel 1c for the water sample to be tested to flow out and communicate with the detection chamber 1a is vertically provided in the lower end of the housing 1, and the drainage channel 1c is located directly below the water inlet channel 1b. To ensure that the water sample to be tested can flow out smoothly along the drainage channel, the inner diameter of the drainage channel 1c is larger than the water inlet channel 1b. During installation, the housing is kept horizontal so that the water sample to be tested can be in the shape of a water column under the action of gravity, and pass through the water inlet channel, the detection chamber and the drainage channel in turn, which is not only convenient for automatic water inlet and water outlet, but also prevents the water sample to be tested from contacting the wall of the detection chamber, so that no dirt is generated on the wall of the detection chamber, ensuring that the device does not need to be cleaned.
[0027] To realize scattered light detection, an incident channel 1d for incident light to pass through and connected to the detection cavity 1a is provided in the housing 1, and a receiving channel 1f for receiving scattered light and connected to the detection cavity 1a is provided in the housing 1, and the angle between the incident channel 1d and the receiving channel 1f is 90°, wherein the light source device is provided at one end of the incident channel 1d away from the detection cavity 1a, and the receiving device is provided at one end of the receiving channel 1f away from the detection cavity 1a. Preferably, the incident channel and the receiving channel are both provided at the upper end of the housing, that is, the incident channel and the receiving channel are provided symmetrically about the water inlet channel.
[0028] The side of the water inlet channel 1b, the drainage channel 1c, the incident channel 1d and the receiving channel 1f away from the detection cavity are all connected to the outside of the shell. To facilitate the processing of the detection cavity, a processing channel 1e that runs through the front and back and is connected to the detection cavity 1a is provided on the shell 1, and a window plug 4 is provided at the front end of the processing channel 1e for convenient observation of the state of the detection cavity, and a first air-permeable plug 5 is provided at the rear end of the processing channel 1e. To prevent the shell from being unable to be vertical after the first air-permeable plug is installed, an installation groove for installing the first air-permeable plug is provided on the shell, and the upper and lower ends of the installation groove are connected to the upper and lower ends of the shell.
[0029] In order to reduce the influence of stray light, a vertically arranged light absorption well 1g for absorbing stray light is provided at the lower end of the housing 1, and the light absorption well 1g is connected to the detection cavity 1a through a light absorption channel 1h. It is best to have two light absorption wells symmetrically arranged at the lower end of the housing. In order to facilitate the processing of the light absorption well, the lower end of the light absorption well is connected to the lower end of the housing, and a second air-permeable plug 6 is provided at the lower end of the light absorption well 1g, and the first air-permeable plug and the second air-permeable plug are both sealed with an air-permeable and light-impermeable sponge.
[0030] In order to facilitate the entry of the water sample to be tested, a water inlet pipe 8 is arranged in the water inlet channel 1b, and the upper end of the water inlet pipe is arranged higher than the outer shell. In order to achieve the fixation of the water inlet pipe, a fixed joint 9 for fixing the upper end of the water inlet pipe 8 is arranged at the end of the water inlet channel 1b away from the detection chamber 1a, and at the same time, in order to ensure that the water inlet pipe can be accurately located in the middle of the incident channel and the receiving channel, a fixing component for fixing the water inlet pipe 8 is arranged at the lower end of the water inlet pipe 8. The fixing component includes a fixed large end arranged at the lower end of the water inlet pipe, and the fixed large end is provided with a fixed countersunk hole for bolts to pass through, and the incident channel and the receiving channel are both located below the fixed large end. Preferably, a joint is provided at the upper end of the water inlet pipe for easy connection with the pipeline. During the detection, the water sample to be tested can reach the water inlet pipe after passing through the pipeline. In order to facilitate the detection of the water sample to be tested, a device such as a water pump and a valve that automatically controls the entry of the water sample to be tested can be provided on the pipeline.
[0031] In order to facilitate the discharge of the water sample to be tested, a drain pipe 10 capable of absorbing light is provided in the drain channel 1c, and a drain joint 11 for fixing the drain pipe 10 is provided at one end of the drain channel 1c away from the detection chamber 1a. Preferably, a drain funnel 12 for collecting the discharged water sample after the test is provided at one end of the drain joint 11 away from the housing 1, and the drain funnel and the drain joint are plug-in or threadedly connected, and the pipe connected to the drain funnel is a black pipe to prevent the reflection of stray light.
[0032] In order to further reduce the influence of stray light, a light-absorbing inner shell 7 is embedded in the detection cavity, and through holes are provided on the light-absorbing inner shell 7 at positions corresponding to the water inlet channel 1b, the drainage channel 1c, the incident channel 1d, the receiving channel 1f, and the light-absorbing channel 1h. At the same time, in order to facilitate the fixation of the light-absorbing inner shell, the drain pipe 10 and the water inlet pipe 8 are both extended 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, so as to ensure that the water sample to be tested can be discharged smoothly through the drain pipe. In order to reduce the distance between the incident channel, the receiving channel and the water sample to be tested, an extension section extending inward and downward is provided at the upper end of the light-absorbing inner shell, and the extension section is provided with extension through holes corresponding to the incident channel and the receiving channel respectively. The setting of the light-absorbing inner shell, the water inlet pipe and the drain pipe can also effectively prevent the water sample to be tested from generating dirt after long-term contact with the outer shell.
[0033] The receiving device includes a receiver 14 arranged on the receiving channel 1f through a receiving bracket 13. The light source device includes a control board 15 and a light source 16 arranged on the incident channel 1d. To ensure the detection result, a light lens 17 for filtering and collimation is arranged in the incident channel 1d and the receiving channel 1f, and a sealing cover 18 is arranged at one end of the incident channel 1d and the receiving channel 1f away from the detection cavity. Preferably, the sealing cover 18 is embedded in the corresponding channel, and a sealing ring is arranged between the sealing cover and the corresponding channel.
[0034] A wire passage is provided in the housing 1 for the wires on the control board 15 and the receiver 14 to pass through, and the wire passage includes a first channel connected to the incident channel, a second channel connected to the receiver and a third channel connected to the outside of the housing, and a wire connector 19 is provided on the third channel. Figure 4 Preferably, the first passage and the second passage are communicated with the space between the sealing cover and the corresponding component.
[0035] In order to facilitate the fixing of the entire device, a bolt countersunk hole for fixing the entire housing and for the bolts to pass through is provided on the housing. In order to ensure that the water inlet channel and the drainage channel are both arranged vertically after the device is fixed, a detection device for detecting whether the housing is in a horizontal state is provided on the housing. The detection device can be arranged to include a horizontal detection sensor embedded in the housing.
[0036] In order to reduce the size of the entire device, it is best that the upper end of the shell is symmetrically provided with two inclined surfaces, and correspondingly, to ensure the installation of the entire shell, the upper end of the installation slot is set as the small end. It is best that the level detection sensor is set at the front side of the water inlet pipe, and the wire passage is set at the rear side of the water inlet pipe. At the same time, in order to prevent the first air permeable plug and the window plug from being installed incorrectly, an identification mark is set at the end of the shell for installing the window plug.
[0037] When the device is in use, it is connected to the water sample to be tested through a pipeline, and then enters the water inlet pipe under the action of the power in the pipeline. Then, the water sample to be tested passes through the water inlet pipe, the light-absorbing inner shell cavity and the drain pipe in sequence under the action of gravity. The control board controls the light source to emit incident light. After passing through the incident channel, the incident light is irradiated on the water column in the detection cavity and scattered. The scattered light at 90° to the incident light is received by the receiver after passing through the receiving channel. The receiver obtains the turbidity of the water sample to be tested by the intensity of the received light signal.
Claims
1. A non-contact turbidity detection device, characterized in that: The invention comprises a shell (1), wherein a detection chamber (1a) for realizing turbidity detection is arranged in the shell (1), a water inlet channel (1b) for a water sample to be detected to enter and communicate with the detection chamber (1a) is vertically arranged in the upper end of the shell (1), and a drainage channel (1c) for a water sample to be detected to flow out and communicate with the detection chamber (1a) is vertically arranged in the lower end of the shell (1), and the drainage channel (1c) is located directly below the water inlet channel (1b); An incident channel (1d) for allowing incident light to pass through and connected to the detection cavity (1a) is provided in the housing (1); a receiving channel (1f) for receiving scattered light and connected to the detection cavity (1a) is provided in the housing (1); 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 one end of the incident channel (1d) away from the detection cavity (1a); and a receiving device is provided at one end of the receiving channel (1f) away from the detection cavity (1a).
2. The non-contact turbidity detection device according to claim 1, characterized in that: The housing (1) is provided with a processing channel (1e) which is through-through from front to back and communicates with the detection chamber (1a); a window plug (4) is provided at the front end of the processing channel (1e); and a first air-permeable plug (5) is provided at the rear end of the processing channel (1e).
3. The non-contact turbidity detection device according to claim 1, characterized in that: The incident channel (1d) and the receiving channel (1f) are both arranged at the upper end of the housing (1); a vertically arranged light absorption well (1g) for absorbing stray light is arranged at the lower end of the housing (1); the light absorption well (1g) is connected to the detection cavity (1a) via a light absorption channel (1h); and a second air-permeable plug (6) is arranged at the lower end of the light absorption well (1g).
4. The non-contact turbidity detection device according to claim 1, characterized in that: A water inlet pipe (8) is arranged in the water inlet channel (1b), and a fixing joint (9) for fixing the upper end of the water inlet pipe (8) is arranged at one end of the water inlet channel (1b) away from the detection chamber (1a), and a fixing assembly for fixing the water inlet pipe (8) is arranged at the lower end of the water inlet pipe (8), and a light-absorbing drainage pipe (10) is arranged in the drainage channel (1c), and a drainage joint (11) for fixing the drainage pipe (10) is arranged at one end of the drainage channel (1c) away from the detection chamber (1a).
5. The non-contact turbidity detection device according to claim 4, characterized in that: A light-absorbing inner shell (7) is arranged in the detection cavity (1a), and through holes are arranged on the light-absorbing inner shell (7) at positions corresponding to the water inlet channel (1b), the water discharge channel (1c), the incident channel (1d) and the receiving channel (1f), and the water discharge pipe (10) and the water inlet pipe (8) are both extended into the light-absorbing inner shell (7), and the upper end of the water discharge pipe (10) is not higher than the light-absorbing inner shell (7).
6. The non-contact turbidity detection device according to claim 4, characterized in that: A drainage funnel (12) is provided at one end of the drainage joint (11) away from the housing (1) for collecting the discharged water sample after measurement, and the drainage funnel is plug-in or threadedly connected to the drainage joint.
7. The non-contact turbidity detection device according to claim 1, characterized in that: The receiving device comprises a receiver (14) arranged on a receiving channel (1f) via a receiving bracket (13); the light source device comprises a control panel (15) and a light source (16) arranged on an incident channel (1d); a light lens (17) for filtering and collimating is arranged in the incident channel (1d) and the receiving channel (1f); and a sealing cover (18) is arranged at one end of the incident channel (1d) and the receiving channel (1f) away from the detection cavity; the sealing cover (18) is embedded in the corresponding channel, and a sealing ring is arranged between the sealing cover and the corresponding channel.
8. The non-contact turbidity detection device according to claim 7, characterized in that: The housing (1) is provided with a wire passage for the control panel (15) and the wires on the receiver (14) to pass through, and the wire passage comprises a first channel connected to the incident channel, a second channel connected to the receiver, and a third channel connected to the outside of the housing, and a wire passage connector (19) is provided on the third channel.
9. The non-contact turbidity detection device according to claim 1, characterized in that: The shell is provided with a detection device for detecting whether the shell is in a horizontal state, and the detection device comprises a horizontal detection sensor vertically embedded in the shell.
10. The non-contact turbidity detection device 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).