On-line detection device for water turbidity

Abstract

The utility model belongs to the technical field of water turbidity detection, and discloses a water turbidity on-line detection device, which is characterized in that the inner wall of a shell is encircled to form a volume space for accommodating water, and the inner wall of the shell is provided with a water inlet and a water outlet which are respectively communicated with the volume space; the light source device is fixedly connected to the inner wall of the shell and is used for emitting light waves for irradiating the water body; the PD detector is fixedly connected to the inner wall of the shell and is vertically arranged relative to the light source device; the extinction assembly comprises an extinction shell, the extinction shell is fixed to the inner wall of the shell, an extinction cavity is formed in the extinction shell, and an extinction through hole which is communicated with the extinction cavity and right faces the light source device is further formed in the extinction shell. The light waves can enter the extinction cavity through the extinction through hole and are continuously reflected in the extinction cavity, and the light waves are dissipated in the reflection process, so that the PD detector is not irradiated any more.

Description

Technical Field

[0001] This utility model relates to the field of water turbidity detection technology, and in particular to an online water turbidity detection device. Background Technology

[0002] Turbidity is an important water quality parameter reflecting the content of suspended solids in water. Online turbidity meters can detect water turbidity in real time and are suitable for locations requiring real-time water quality monitoring, such as sewage treatment plants and waterworks. They work by illuminating the water flowing into the meter with a light source, and a photodiode detector (PD) detects the lateral scattered light reflected by suspended solids in the water to calculate the turbidity. However, when the light emitted by the light source does not reach the suspended solids in the water, it will continuously reflect inside the meter and reach the detection end of the PD detector. This distorts the lateral scattered light detection results of the PD detector, thus reducing the accuracy of the water turbidity detection. Utility Model Content

[0003] The purpose of this invention is to provide an online turbidity detection device for water bodies, which can prevent light waves that have not been irradiated into the suspended matter in the water body from being reflected and irradiating the detection end of the PD detector, thereby affecting the detection accuracy of the PD detector and ensuring the accuracy of water turbidity detection by the online turbidity detection device.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An online turbidity detection device for water bodies is provided for real-time detection of turbidity, comprising:

[0006] The outer shell has an inner wall that encloses a volumetric space for containing the water body, and the inner wall of the outer shell has an inlet and an outlet that are respectively connected to the volumetric space.

[0007] A light source device is fixedly connected to the inner wall of the housing and is used to emit light waves that illuminate the water.

[0008] The PD detector is fixedly connected to the inner wall of the housing and is set perpendicularly to the light source device;

[0009] The matting component includes a matting housing, which is fixed to the inner wall of the outer shell. The matting housing has a matting cavity inside and a matting through hole that communicates with the matting cavity and faces the light source device.

[0010] Preferably, the matting component further includes a reflector, which is fixedly connected to the inner wall of the matting housing and located within the matting cavity. The reflector has a reflective wall corresponding to the matting through hole, and the perpendicular line of the reflective wall intersects the axis of the matting through hole.

[0011] Preferably, one inner wall of the matting housing is a reflective wall corresponding to the matting through hole and whose perpendicular line intersects the axis of the matting through hole.

[0012] Preferably, the matting component further includes a matting threaded cone, which is fixedly connected to the inner wall of the matting housing and located inside the matting cavity. The tip of the matting threaded cone faces the light source device, and the light wave irradiates the matting threaded cone and undergoes diffuse reflection.

[0013] Preferably, the matte threaded taper is provided with a first connecting hole, and the side wall of the matte housing is provided with a first fixing hole corresponding to the first connecting hole. The matte threaded taper is fixedly connected to the matte housing by a locking member passing through the first connecting hole and engaging with the first fixing hole.

[0014] Preferably, a gasket is also provided at the connection position between the matte threaded taper and the matte housing.

[0015] Preferably, the matting housing further includes a first housing and a second housing, the matting through hole is formed on the second housing, and the first housing and the second housing are interlocked to form the matting cavity.

[0016] Preferably, the matting housing includes at least two second housings, the inner diameters of the matting through holes of the different second housings are different, and the first housing and one of the at least two second housings are interlocked to form the matting cavity.

[0017] Preferably, the first shell is made of a hydrophilic material; and / or the second shell is made of a hydrophilic material.

[0018] Preferably, the surface of the first housing is a diffuse reflective surface; and / or the surface of the second housing is a diffuse reflective surface.

[0019] Preferably, the inner wall of the outer shell is a diffuse reflective surface.

[0020] The beneficial effects of this utility model are:

[0021] The online turbidity detection device provided by this utility model forms a volume space for accommodating water by enclosing the inner wall of the outer shell. The inner wall of the outer shell has an inlet and an outlet that are respectively connected to the volume space. A light source device is fixedly connected to the inner wall of the outer shell and is used to emit light waves to illuminate the water. A PD detector is fixedly connected to the inner wall of the outer shell and is set perpendicular to the light source device. The light source device emits light waves to illuminate suspended matter in the water to generate side-scattered light. The PD detector measures the turbidity of the water by detecting the side-scattered light. When the light waves emitted by the light source device do not illuminate the suspended matter in the water to generate side light, they can enter the extinction cavity through the extinction hole and be continuously reflected in the extinction cavity. The light waves dissipate during the reflection process, so that they no longer illuminate the PD detector. Thus, the PD detector only detects the side-scattered light reflected by the suspended matter in the water, ensuring the accuracy of water turbidity detection by the online turbidity detection device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the online turbidity detection device for water provided in Embodiment 1 of this utility model;

[0023] Figure 2 This is a top view schematic diagram of the online turbidity detection device for water provided in Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the matting component provided in Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the matting component provided in Embodiment 2 of this utility model.

[0026] In the picture:

[0027] 1. Outer shell; 11. Volumetric space; 12. Inlet; 13. Outlet;

[0028] 2. Light source device; 3. PD detector;

[0029] 4. Matting component; 41. Matting housing; 411. Matting cavity; 412. Matting through hole; 413. First fixing hole; 414. First housing; 415. Second housing; 42. Matting threaded taper; 421. First connecting hole; 43. Reflector. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] When the light emitted by the light source does not reach the suspended matter in the water, it will be continuously reflected inside the online turbidity analyzer and eventually reach the detection end of the PD detector. This is the direct cause of the distortion in the lateral scattering light detection results of the PD detector. Therefore, preventing the light emitted by the light source from being continuously reflected inside the online turbidity analyzer is the key to solving the above technical problem. The following section will discuss this further. Figures 1 to 4 This invention provides a detailed description of the online turbidity detection device for water bodies.

[0035] Example 1

[0036] Figure 1 This diagram illustrates the structure of the online turbidity detection device for water provided in this embodiment. Figure 2 This diagram shows a top view of the online turbidity detection device for water provided in this embodiment. Figure 3 A schematic diagram of the structure of the matting component 4 provided in this embodiment is shown. Figures 1 to 3As shown, the online turbidity detection device for water provided in this embodiment is used to detect the turbidity of water in real time. It includes a shell 1, a light source device 2, a PD detector 3, and an extinction component 4. The inner wall of the shell 1 forms a volume space 11 for accommodating water. The inner wall of the shell 1 is provided with an inlet 12 and an outlet 13 that are respectively connected to the volume space 11. The light source device 2 is fixedly connected to the inner wall of the shell 1 and is used to emit light waves that irradiate the water. The PD detector 3 is fixedly connected to the inner wall of the shell 1 and is set vertically relative to the light source device 2. The PD detector 3 is used to detect the lateral scattered light reflected by the water. The extinction component 4 includes an extinction shell 41, which is fixed to the inner wall of the shell 1. An extinction cavity 411 is provided inside the extinction shell 41. An extinction through hole 412 that is connected to the extinction cavity 411 and faces the light source device 2 is also provided on the extinction shell 41.

[0037] The online turbidity detection device provided in this embodiment forms a volume space 11 for accommodating water by enclosing the inner wall of the outer shell 1. The inner wall of the outer shell 1 has an inlet 12 and an outlet 13 that are respectively connected to the volume space 11. The light source device 2 is fixedly connected to the inner wall of the outer shell 1 and is used to emit light waves to irradiate the water. The PD detector 3 is fixedly connected to the inner wall of the outer shell 1 and is set perpendicular to the light source device 2. The light source device 2 emits light waves to irradiate suspended matter in the water to generate side-scattered light. The PD detector 3 measures the turbidity of the water by detecting the side-scattered light. When the light waves emitted by the light source device 2 do not irradiate the suspended matter in the water to generate side light, they can enter the extinction cavity 411 through the extinction hole 412 and be continuously reflected in the extinction cavity 411. The light waves dissipate during the reflection process, so that they no longer irradiate the PD detector 3. Thus, the PD detector 3 only detects the side-scattered light reflected by the suspended matter in the water, ensuring the accuracy of the online turbidity detection device.

[0038] Continue as Figures 1 to 3 As shown, the extinction assembly 4 also includes a reflector 43, which is fixedly connected to the inner wall of the extinction housing 41 and located inside the extinction cavity 411. The reflector 43 has a reflective wall corresponding to the extinction through hole 412. The vertical line of the reflective wall intersects with the hole axis of the extinction through hole 412, thereby ensuring that when the light wave emitted by the light source device 2 enters the extinction cavity 411 through the extinction through hole 412 without irradiating the suspended matter in the water, it will be reflected by the reflective wall and continuously reflected inside the extinction cavity 411, and will not be reflected outside the extinction cavity 411 and irradiate the PD detector 3.

[0039] In some embodiments, an inner wall of the matting housing 41 is a reflective wall provided corresponding to the matting through hole 412 and whose vertical line intersects with the hole axis of the matting through hole 412, thereby simplifying the structure of the matting housing 41 and reducing the production cost of the matting housing 41.

[0040] Continue as Figures 1 to 3 As shown, the matte housing 41 also includes a first housing 414 and a second housing 415. The matte through hole 412 is opened on the second housing 415. The first housing 414 and the second housing 415 are interlocked to form a matte cavity 411, thereby simplifying the structure of the matte housing 41 and reducing the production cost of the matte housing 41.

[0041] In some embodiments, the extinction housing 41 includes at least two second housings 415, with different inner diameters of the extinction through-holes 412 in the different second housings 415. The first housing 414 and one of the at least two second housings 415 are interlocked to form an extinction cavity 411. This allows the selection of second housings 415 with different inner diameter extinction through-holes 412 based on the actual positional distance between the extinction component 4 and the light source device 2, thereby enabling the extinction component 4 to adapt to various specifications of online turbidity detection devices. It should be noted that different distances between the extinction component 4 and the light source device 2 necessitate the setting of extinction through-holes 412 with different inner diameters. This ensures that when the light waves emitted by the light source device 2 do not irradiate suspended matter in the water and generate lateral light, they can reach the extinction cavity 411 as much as possible through the extinction through-holes 412, thereby improving the extinction effect of the extinction component 4 and ensuring the accuracy of water turbidity detection by the online turbidity detection device.

[0042] Preferably, the first housing 414 is made of a hydrophilic material to prevent air bubbles precipitated from the water contained in the volume space 11 from adhering to the wall of the first housing 414, thereby preventing the light waves emitted by the light source device 2 from being reflected by air bubbles and changing their transmission direction to illuminate the PD detector 3 when they irradiate the outer wall of the first housing 414. Similarly, the second housing 415 is made of a hydrophilic material to prevent the light waves emitted by the light source device 2 from being reflected by air bubbles and changing their transmission direction to illuminate the PD detector 3 when they irradiate the outer wall of the second housing 415.

[0043] In some embodiments, the surface of the first housing 414 is a diffuse reflective surface, so that when the light waves emitted by the light source device 2 irradiate the extinction cavity 411, diffuse reflection occurs, thereby preventing the light waves from being reflected again outside the extinction cavity 411. Similarly, the surface of the second housing 415 is a diffuse reflective surface. It should be noted that the type of diffuse reflective surface is not limited here. A diffuse reflective surface can be a frosted surface or a zigzag surface, the surface of which is rough enough to cause diffuse reflection of the light waves irradiating it without specular reflection. All diffuse reflective surfaces with rough surfaces that cause diffuse reflection of the light waves irradiating them without specular reflection are within the protection scope of this embodiment, and will not be described in detail here.

[0044] In other embodiments, the inner wall of the housing 1 is a diffuse reflective surface, thereby preventing some light waves emitted by the light source device 2 that do not illuminate the suspended matter in the water and do not enter the extinction cavity 411 from being continuously reflected inside the housing 1 and illuminating the PD detector 3, thereby ensuring the accuracy of water turbidity detection by the online water turbidity detection device.

[0045] Example 2

[0046] This embodiment provides an online turbidity detection device for water bodies. The structure of this online turbidity detection device is roughly the same as that of the online turbidity detection device in Embodiment 1. The difference lies in the extinction principle of the extinction component 4.

[0047] Figure 4 A schematic diagram of the structure of the matting component 4 provided in this embodiment is shown. Figure 4 Combination Figures 1 to 2 As shown, the extinction component 4 also includes an extinction threaded cone 42, which is fixedly connected to the inner wall of the extinction housing 41 and located in the extinction cavity 411. The tip of the extinction threaded cone 42 faces the light source device 2. When light waves are irradiated onto the extinction threaded cone 42, diffuse reflection occurs. Thus, when the light waves emitted by the light source device 2 do not irradiate the suspended matter in the water and generate lateral light, they can enter the extinction cavity 411 through the extinction through hole 412 and irradiate the extinction threaded cone 42 to generate diffuse reflection. This prevents the light waves that have been transmitted into the extinction cavity 411 from being reflected outside the extinction cavity 411, thereby improving the extinction capability of the extinction component 4 and thus improving the water turbidity detection accuracy of the online water turbidity detection device.

[0048] Continue as Figure 4 Combination Figures 1 to 2 As shown, the matte threaded taper 42 is provided with a first connecting hole 421, and the side wall of the matte housing 41 is provided with a first fixing hole 413 corresponding to the first connecting hole 421. A locking member passes through the first connecting hole 421 and engages with the first fixing hole 413 to fix the matte threaded taper 42 to the matte housing 41, thus achieving a detachable connection between the matte threaded taper 42 and the first housing 414. This allows the matte threaded taper 42 to be replaced according to different types of light source devices 2 and different inner diameters of the matte through holes 412, thereby improving the matte effect of the matte assembly 4. Specifically, the first connecting hole 421 is a through hole, the first fixing hole 413 is a threaded hole, and the locking member is a bolt. The bolt passes through the through hole and engages with the threaded hole to fix the matte threaded taper 42 to the inner wall of the matte housing 41.

[0049] In some embodiments, a shim is provided at the connection position between the matte threaded taper 42 and the matte housing 41. By providing shims of different thicknesses between the matte threaded taper 42 and the matte housing 41, the distance between the light source device 2 and the matte threaded taper 42 can be adjusted, thereby enabling the matte threaded taper 42 to be adapted to different types of light source devices 2.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An online turbidity detection device for water bodies, used for real-time detection of water turbidity, characterized in that, include: The outer shell (1) has an inner wall that forms a volume space (11) for accommodating the water body. The inner wall of the outer shell (1) has an inlet (12) and an outlet (13) that are respectively connected to the volume space (11). A light source device (2) is fixedly connected to the inner wall of the outer shell (1) and is used to emit light waves that irradiate the water. The PD detector (3) is fixedly connected to the inner wall of the housing (1) and is arranged perpendicularly to the light source device (2); The matting component (4) includes a matting housing (41), which is fixed to the inner wall of the outer shell (1). The matting housing (41) has a matting cavity (411) inside it, and a matting through hole (412) is also provided on the matting housing (41) that communicates with the matting cavity (411) and faces the light source device (2).

2. The online turbidity detection device for water bodies according to claim 1, characterized in that, The matting component (4) further includes a reflector (43), which is fixedly connected to the inner wall of the matting housing (41) and located in the matting cavity (411). The reflector (43) has a reflective wall corresponding to the matting through hole (412), and the vertical line of the reflective wall intersects the hole axis of the matting through hole (412).

3. The online turbidity detection device for water bodies according to claim 1, characterized in that, One inner wall of the matting housing (41) is a reflective wall corresponding to the matting through hole (412) and whose perpendicular line intersects the hole axis of the matting through hole (412).

4. The online turbidity detection device for water bodies according to claim 1, characterized in that, The extinction assembly (4) also includes an extinction threaded cone (42), which is fixedly connected to the inner wall of the extinction housing (41) and located in the extinction cavity (411). The tip of the extinction threaded cone (42) faces the light source device (2), and the light wave is irradiated onto the extinction threaded cone (42) and diffuse reflection occurs.

5. The online turbidity detection device for water bodies according to claim 4, characterized in that, The matte threaded taper (42) is provided with a first connecting hole (421), and the side wall of the matte housing (41) is provided with a first fixing hole (413) corresponding to the first connecting hole (421). The matte threaded taper (42) is fixedly connected to the matte housing (41) by a locking member passing through the first connecting hole (421) and engaging with the first fixing hole (413).

6. The online turbidity detection device for water bodies according to claim 5, characterized in that, A gasket is also provided at the connection position between the matte threaded taper (42) and the matte housing (41).

7. The online turbidity detection device for water bodies according to claim 1, characterized in that, The matting housing (41) further includes a first housing (414) and a second housing (415). The matting through hole (412) is opened on the second housing (415). The first housing (414) and the second housing (415) are engaged with each other to form the matting cavity (411).

8. The online turbidity detection device for water bodies according to claim 7, characterized in that, The matting housing (41) includes at least two second housings (415), and the inner diameter of the matting through hole (412) of the different second housings (415) is different. The first housing (414) and one of the at least two second housings (415) are interlocked to form the matting cavity (411).

9. The online turbidity detection device for water bodies according to claim 7, characterized in that, The first housing (414) is made of a hydrophilic material; and / or the second housing (415) is made of a hydrophilic material.

10. The online turbidity detection device for water bodies according to claim 7, characterized in that, The surface of the first housing (414) is a diffuse reflective surface; and / or the surface of the second housing (415) is a diffuse reflective surface.

11. The online water turbidity detection device according to any one of claims 1-10, characterized in that, The inner wall of the outer shell (1) is a diffuse reflective surface.

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