Device for measuring spectrum of flowing liquid

Abstract

According to the technical scheme, the device comprises a fluid mechanism, the fluid mechanism comprises a valve body, a valve cavity is formed in the valve body, the outer wall of the valve body is further provided with a valve cavity port communicated with the valve cavity, the valve cavity port and the valve cavity are arranged in the tangential direction, and the valve cavity port is communicated with the valve cavity. A gas-liquid opening communicated with the valve cavity is formed in the center of the valve body; the detection mechanism comprises an emitting assembly, the emitting assembly is located on one side of the valve body and used for emitting detection light, and the detection light emitted by the emitting assembly penetrates through the liquid flowing in the valve cavity; the receiving assembly is used for receiving the detection light penetrating through the flowing liquid and generating a detection signal; and the processing module is used for receiving and processing the detection signal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid measuring device, more particularly to a device for measuring spectrum of flowing liquid. BACKGROUND

[0002] The spectrum of the liquid is obtained by irradiating the liquid to be detected with multiple wavelengths (including: deep ultraviolet light, visible light, red ultraviolet light, near infrared and infrared light), and then comparing the absorption spectrum with the standard spectrum to determine the color, turbidity and reducing substance content of the liquid. The method of measuring the concentration of the liquid by using the spectrum is simple, safe, fast and low in cost.

[0003] However, when measuring the flowing liquid in the pipeline, impurities in the liquid will inevitably adhere to the optical components, and bubbles in the liquid will make the data measured by the spectrum method inaccurate. SUMMARY

[0004] In view of the above technical problems in the prior art, the present application provides a device for measuring spectrum of flowing liquid to solve the above technical problems in the prior art.

[0005] To achieve the above object, the present application provides the following technical scheme:

[0006] A device for measuring spectrum of flowing liquid, comprising:

[0007] A fluid mechanism, comprising:

[0008] A valve body, a cylindrical valve cavity is formed in the valve body, a valve cavity opening is further provided on the outer wall of the valve body and communicates with the valve cavity, so that the liquid enters the valve cavity through the valve cavity opening and rotates, a gas-liquid port is formed in the center of one side end face of the valve body and communicates with the valve cavity, the flowing liquid rotates along the valve cavity and discharges gas and / or liquid along the gas-liquid port;

[0009] A detection mechanism, comprising:

[0010] An emission assembly, which is located on one side of the valve body and is used for emitting detection light, the detection light irradiates along the axial direction of the valve cavity and does not pass through the central area of the valve cavity, so that the detection light penetrates the flowing liquid in the valve cavity;

[0011] A receiving assembly, which is used for receiving the detection light penetrating the flowing liquid and generating a detection signal;

[0012] A processing module, which is used for receiving and processing the detection signal.

[0013] As a further improvement of the present application, an annular cavity is further formed in the valve cavity, a plurality of liquid inlets are formed on the wall of the annular cavity, and the liquid inlets are arranged in an array along the circumference of the annular cavity.

[0014] As a further improvement of the present application, a flushing port is further formed in the valve body and communicates with the valve cavity, and a backflow prevention member is arranged at the flushing port.

[0015] As a further improvement of the present application, a flow blocking block is arranged in the backflow prevention member.

[0016] As a further improvement of the present application, a light transmission member is further arranged between the transmitting assembly, the receiving assembly and the valve body.

[0017] As a further improvement of the present application, the transmitting assembly comprises a transmitting part, and the valve body is provided with a first support on one side of the valve body, and the transmitting part is arranged on the first support.

[0018] As a further improvement of the present application, the receiving assembly comprises a receiving part, and the valve body is provided with a second support on the side opposite to the first support, and the receiving part is arranged on the second support and used for receiving the detection light.

[0019] The processing module comprises a first circuit board and a second circuit board, the first circuit board is arranged on the first support and electrically connected with the transmitting part, the second circuit board is arranged on the second support and electrically connected with the receiving part, and the first circuit board and the second circuit board are in communication connection.

[0020] As a further improvement of the present application, the receiving assembly comprises a receiving part and a reflecting part, the valve body is provided with a second support on the side opposite to the first support, the receiving part is arranged on the first support and symmetrically arranged with the transmitting part, a reflecting light channel is formed on the second support, and the reflecting part is arranged on the second support, the detection light enters the reflecting light channel after penetrating the flowing liquid in the valve body and is reflected on the reflecting part, the reflecting part reflects the detection light, and the receiving part receives the detection light reflected by the reflecting part.

[0021] The processing module comprises a third circuit board, the third circuit board is arranged on the first support, and the transmitting part and the receiving part are electrically connected with the third circuit board.

[0022] As a further improvement of the present application, the transmitting assembly further comprises a convex lens, an incident light channel for the detection light is formed in the first support, the convex lens is arranged in the incident light channel, and the detection light enters the valve cavity after penetrating the convex lens.

[0023] As a further improvement of the present application, the valve body is provided with a sterilization assembly on the side away from the emission assembly.

[0024] As a further improvement of the present application, a TDS probe is arranged at the water outlet of the valve body.

[0025] As a further improvement of the present application, a temperature sensor is further arranged on the TDS probe, which is used for temperature compensation operation.

[0026] As a further improvement of the present application, an exhaust mechanism is further arranged on the valve cavity, which comprises an exhaust valve body and an exhaust valve core.

[0027] Advantages of the present application:

[0028] 1. The liquid pressure near the edge region of the valve cavity is greater through the rotational movement of the liquid in the valve cavity, so that the gas bubbles in the liquid are squeezed and gathered at the center of the valve cavity and discharged through the gas-liquid port along with the rotational movement of the liquid, avoiding the interference of the bubbles on the detection light during the detection of the liquid.

[0029] 2. After the liquid enters the valve cavity through the valve cavity port, the liquid rotates in the valve cavity at a certain flow rate, thereby prolonging the time in the valve cavity, so that the unit quantity of liquid can be fully detected.

[0030] 3. When the liquid in the valve cavity rotates, the angular velocity of the liquid in the inner and outer rings is different, so that the liquid in the valve cavity forms a stirring effect, so that the mixing of the liquid is sufficient, thereby making the spectral detection data more accurate.

[0031] 4. The rotational flow of the liquid in the valve cavity forms a scouring effect in the valve cavity, effectively inhibiting the pollution inside the valve cavity.

[0032] 5. The detection mechanism is arranged on both ends of the valve body, and the detection light fully detects the liquid in the valve cavity, improves the detection sensitivity, and meets the light decay requirement when measuring different liquids. BRIEF DESCRIPTION OF DRAWINGS

[0033] In the drawings, which are not necessarily drawn to scale, like numerals describe similar components throughout the several views. Like numerals having different letter extensions can represent different instances of like components. The drawings illustrate generally, by way of example, various embodiments of the application and are not intended to limit the application. The same or similar reference numbers can be used in different drawings to represent the same or similar components. Such embodiments are illustrative rather than limiting and are intended to provide examples of the present devices and methods. In the present disclosure, the word "comprising" and variations such as "comprise" or "comprises" is not necessarily limited to the meaning of the term "including." Rather, the words are to be interpreted as specifying the presence of stated features or components, but not to the exclusion of the presence or addition of one or more other features, components or steps. The words "example" and "exemplary" are used herein to mean serving as an example, instance, or illustration. Any implementation described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Likewise, the term "implementation" does not necessarily imply that the implementation is the only way to implement the described function. Rather, the term "implementation" is used herein to indicate an example implementation, one of several possible implementations, or a possible implementation among many possible implementations.

[0034] Figure 1 Schematic diagram of the three-dimensional structure embodying the fluidic mechanism;

[0035] Figure 2 Schematic diagram of the structure embodying the annular cavity in embodiment two;

[0036] Figures 3 to 5 Schematic diagram of the structure embodying the valve cavity;

[0037] Figure 6 and Figure 7 Schematic diagram of the structure embodying the fluidic mechanism connecting the backflow prevention member;

[0038] Figure 8 Schematic diagram of the structure embodying the detection mechanism and the fluidic mechanism;

[0039] Figure 9 Schematic diagram of the mechanism embodying the detection mechanism in embodiment five;

[0040] Figure 10 Schematic diagram of the structure embodying different numbers and distributions of receiving portions;

[0041] Figure 11 Schematic diagram of the structure embodying the reflecting member;

[0042] Figure 12 Schematic diagram of the structure embodying the detection mechanism provided with a TDS probe;

[0043] Figure 13 Schematic diagram of the structure embodying the arrangement of the TDS probe;

[0044] Figure 14 Schematic diagram of the structure embodying the light entrance channel;

[0045] Figure 15 Schematic diagram of the structure embodying the fluidic mechanism connecting the detection mechanism and the backflow prevention member

[0046] Figure 16 Schematic diagram of the structure embodying the flow rate matcher.

[0047] 1, fluid mechanism; 11, valve body; 12, valve cavity; 13, valve cavity port; 14, gas-liquid port; 15, flushing port; 16, annular cavity; 17, liquid inlet; 2, detection mechanism; 21, transmitting component; 211, transmitting part; 212, convex lens; 22, receiving component; 221, receiving part; 222, reflecting part; 23, processing module; 231, circuit board one; 232, circuit board two; 233, circuit board three; 3, backflow suppression piece; 31, flow blocking block; 4, light transmission piece; 5, first support; 51, incident light channel; 6, second support; 61, reflected light channel; 7, sterilization component; 8, TDS probe; 81, temperature sensor; 9, exhaust mechanism; 91, exhaust valve body; 92, exhaust valve core; 93, gas pass-through structure; 10, flow rate matching device. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0049] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the ordinary meaning understood by one of ordinary skill in the art to which the present application pertains. The terms “first”, “second”, and similar terms used in the present application do not denote any order, quantity, or importance, but are used to distinguish different components. The terms “include” or “contain” and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “up”, “down”, “left”, “right”, and the like are used only to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0050] In order to keep the following description of the embodiments of the present application clear and brief, the present application omits the detailed description of known functions and known components.

[0051] Embodiment one:

[0052] Reference Figures 1 to 8The diagram illustrates a specific embodiment of a device for measuring the spectrum of a flowing liquid according to the present invention. It includes a fluid mechanism 1 and a detection mechanism 2. The fluid mechanism 1 includes a valve body 11, within which a cylindrical valve cavity 12 is formed. Specifically, the valve cavity 12 is a flattened cylinder. The outer wall of the valve body 11 is also provided with a valve cavity port 13 communicating with the valve cavity 12. There is at least one valve cavity port 13, which is tangentially arranged to the valve cavity 12 so that when liquid is introduced through the valve cavity port 13, the liquid rotates within the valve cavity 12. A gas-liquid port 14 communicating with the valve cavity 12 is also formed at the center of the valve body 11. When the valve cavity port 13 is only used for liquid input, the gas-liquid port 14 is used for discharging gas and / or liquid. When one port of the valve cavity port 13 is used for liquid output, the gas-liquid port 14 is used for discharging gas.

[0053] The detection mechanism 2 includes a transmitting component 21, a receiving component 22, and a processing module 23. The transmitting component 21 is located on one side of the end of the valve body 11 and is used to emit detection light. The detection light emitted by the transmitting component 21 penetrates the liquid flowing in the valve cavity 12. The receiving component 22 is used to receive the detection light that has penetrated through the flowing liquid and generate a detection signal. The processing module 23 is used to receive the detection signal and perform analysis. A light-transmitting element 4 is provided between the transmitting component 21 and the receiving component 22 and the valve body 11. The detection light passes through the light-transmitting element 4 and enters the flowing liquid in the valve cavity 12. The light-transmitting element 4 can be a solid flat lens or a window formed by a flat lens at the position where the detection light is irradiated, so that the detection light can enter the flowing liquid. The light-transmitting element 4 can also be a lens of other shapes, so that the detection light can enter the valve cavity 12 in a straight line and penetrate the liquid before being received by the receiving component 22. The emitting unit 211 includes, but is not limited to, light-emitting diodes (LEDs) and laser diodes (LDs) of specific wavelengths. When using LEDs of specific wavelengths, multiple LEDs of specific wavelengths are combined to form a detection method. These multiple LEDs of specific wavelengths include visible light, ultraviolet light, and infrared light, thereby obtaining different absorption spectral lines as required. When using LDs, the narrow linewidth and wavelength-modulated characteristics of tunable semiconductor lasers allow the output power and emission wavelength of the laser to be changed, thereby obtaining the absorption spectral line to be measured.

[0054] A sterilization component 7 is also provided on the side of the valve body 11 opposite to the emission component 21. The sterilization component 7 includes, but is not limited to, an ultraviolet germicidal lamp, and is used to effectively inhibit bacterial growth within the valve cavity 12. When the detection mechanism 2 is detecting the liquid flowing within the valve cavity 12, the sterilization component 7 remains closed to avoid the influence of the ultraviolet light used for sterilization on the absorption spectrum. When the detection is completed, the sterilization component 7 is opened to sterilize the valve cavity 12.

[0055] Working principle and its effects:

[0056] Liquid is introduced through valve cavity inlet 13. The columnar shape of valve cavity 12 facilitates liquid flow analysis and measurement. As the liquid rotates within valve cavity 12, the higher liquid pressure near the edge causes air bubbles to be compressed and aggregated at the center of valve cavity 12, exiting through gas-liquid outlet 14, thus preventing interference from air bubbles with the detection light. Furthermore, the different angular velocities of the inner and outer rings of the liquid rotating within valve cavity 12 create a stirring effect, resulting in more uniform mixing. The columnar structure of valve cavity 12 facilitates liquid measurement and concentration calculation, leading to accurate data obtained through spectroscopic detection. Simultaneously, the detection light emitted by the emitting component 21 penetrates the rotating liquid and, under the action of the processing module 23, analyzes and determines the liquid's color, turbidity, and reducing substance content. During detection, infrared absorption spectra are used to analyze the turbidity of the water sample, visible light absorption spectra are used to analyze the color of the water sample, and ultraviolet light absorption spectra are used to analyze the degree of reducing substance pollution and the total organic carbon (TOC) content in the water sample. Due to the rotating flow of the liquid within the valve chamber 12, a flushing effect is maintained inside the valve chamber 12, effectively suppressing contamination within the valve chamber 12, especially at the edges, thus ensuring the accuracy of the spectroscopic measurement.

[0057] Example 2:

[0058] refer to Figure 1 and Figure 2 The diagram shows a specific embodiment of the device for measuring the spectrum of flowing liquids according to the present invention, which differs from Embodiment 1 in that:

[0059] An annular cavity 16 is also formed inside the valve cavity 12. Multiple liquid inlets 17 are provided on the wall of the annular cavity 16. The multiple liquid inlets 17 are arranged in a circular array along the circumference of the annular cavity 16. By the arrangement of the liquid inlet direction of the liquid inlet 17 with the valve cavity 12, the liquid rotates and flows inside the valve cavity 12. It enters the inner cavity through the liquid inlet 17. As the liquid flows in the inner cavity, the gas and / or liquid are discharged from the gas-liquid port 14.

[0060] Example 3:

[0061] refer to Figure 6 and Figure 7 The image shows a specific embodiment of the device for measuring the spectrum of a flowing liquid according to the present invention, which differs from Embodiment 2 in that:

[0062] The valve body 11 is also provided with a flushing port 15 communicating with the valve cavity 12. A backflow suppressor 3 is provided at the flushing port 15. The backflow suppressor 3 is arranged in the radial direction of the valve cavity 12. A flow-blocking block 31 is provided inside the backflow suppressor 3. Multiple flow-blocking blocks 31 are provided. The multiple flow-blocking blocks 31 are arranged at an incline along the inner wall of the backflow suppressor 3 so that the resistance to forward flow in the flow-blocking block 3 is small and the resistance to reverse flow is large. The port where the flushing port 15 connects to the valve cavity 12 is narrow. Furthermore, the opening direction is set along the radial direction of the valve cavity 12, thereby suppressing the disruption of the fluid rotation movement law in the cavity caused by the separation of the fluid boundary layer due to the inner end of the flushing port 15; and when the flushing port 15 is opened manually or automatically, liquid for cleaning is injected into the valve cavity 12, thereby flushing the surface of the light-transmitting element 4 and other surfaces of the valve cavity 12 and then draining it, thus ensuring that dirt does not easily adhere to the light-transmitting element 4 and the valve cavity 12, thereby ensuring the accuracy of spectroscopic measurements.

[0063] Example 4:

[0064] refer to Figure 8 and Figure 10 The diagram shows a specific embodiment of the device for measuring the spectrum of flowing liquids according to the present invention, which differs from Embodiment 1 in that:

[0065] The emitting assembly 21 includes an emitting part 211 and a convex lens 212. A first bracket 5 is provided on one side of the valve body 11 where the emitting assembly 21 is located. The receiving assembly 22 includes a receiving part 221. A second bracket 6 is provided on the opposite side of the valve body 11 where the first bracket 5 is located. The processing module 23 includes a first circuit board 231 and a second circuit board 232. The first circuit board 231 is located on the first bracket 5 and is electrically connected to the emitting part 211. The second circuit board 232 is located on the second bracket 6 and is electrically connected to the receiving part 221. The sterilization assembly 7 is connected to the electrical... Circuit board 232 is electrically connected. The emitting part 211 is used to emit detection light. An incident light path 51 for the detection light to pass through is formed in the first bracket 5. A convex lens 212 is set in the incident light path 51 to focus the detection light and increase its intensity. A focusing element is also set in the incident light path 51. The focusing element has a focusing hole for the detection light after being focused by the convex lens 212 to pass through. The focusing element also serves to fix the convex lens 212. Circuit board 1 231 and circuit board 2 232 are communicatively connected. The detection light passes through the focusing hole and then through the light-transmitting element 4 into the flowing liquid in the valve cavity 12. The receiving part 221 receives the detection light on the side of the valve body 11 away from the emitting part 211, thereby realizing the detection of the flowing liquid.

[0066] Example 5:

[0067] refer to Figure 9 and Figure 11The diagram shows a specific embodiment of the device for measuring the spectrum of a flowing liquid according to the present invention, which differs from Embodiment 4 in that:

[0068] The transmitting component 21 includes a transmitting part 211, the receiving component 22 includes a receiving part 221 and a reflecting part 222, the valve body 11 has a first bracket 5 on one side of the transmitting component 21, and a second bracket 6 on the opposite side of the valve body 11. The processing module 23 includes a circuit board 233, the receiving part 221 is disposed on the first bracket 5 and is symmetrically disposed with respect to the transmitting part 211, the circuit board 233 is disposed on the first bracket 5, and the transmitting part 211 and the receiving part 221 are electrically connected to the circuit board 233 respectively. A reflective light path 61 is formed in the second support 6. The reflective component 222 includes two reflectors, which are respectively disposed on both sides of the reflective light path 61 in the second support 6, and the two reflectors are set at a 90-degree angle. This allows the detection light to penetrate the flowing liquid in the valve body 11 and enter the first reflector on the reflective light path 61. The detection light is reflected by the first reflector to the second reflector and then emitted from the reflective light path 61. The detection light emitted from the reflective light path 61 re-enters the valve cavity 12 to detect the flowing liquid and penetrates the flowing liquid to be received by the receiving unit 221. The structure of the reflectors also increases the distance the detection light travels through the liquid, thereby improving the measurement sensitivity, meeting the light attenuation requirements when measuring different liquids, and enabling the liquid flowing in the valve cavity 12 to penetrate twice during detection, achieving the effect of sufficient detection of the flowing liquid.

[0069] In this embodiment, if the selected emitting part 211 is a light-emitting diode of a specific wavelength, a convex lens 212 can be provided in the first bracket 5 to focus the light. If the selected emitting part 211 is an LD laser diode, it is not necessary to provide a convex lens 212 in the first bracket 5 to focus the light.

[0070] Example 6:

[0071] refer to Figures 12 to 16 The image shows a specific embodiment of the device for measuring the spectrum of a flowing liquid according to the present invention, which differs from Embodiment 5 in that:

[0072] The outlet end of the gas-liquid port 14 is also connected to a flow matching device 10, which forms a flow-limiting channel to achieve flow-limited discharge of liquid. A TDS probe 8 (TDS represents the total solids dissolved in water) is installed at the outlet of the valve body 11. When the valve cavity port 13 is only used for liquid input and the gas-liquid port 14 is used for gas and / or liquid discharge, the TDS probe 8 is installed at the outlet of the gas-liquid port 14 to measure the concentration of liquid. When liquid is output from one port of the valve cavity port 13, the TDS probe 8 is installed at the outlet of the valve cavity port 13 used for liquid output. A temperature sensor 81 is also installed on the TDS probe 8. Since the liquid will generate a temperature difference when flowing, the temperature sensor 81 is used to measure the liquid temperature and to perform compensation calculations for the temperature difference in spectroscopic measurements and TDS measurements. When a liquid rotates in a circular motion, the inner and outer rings have different speeds. To avoid the liquid flow affecting the TDS probe 8 and temperature sensor 81 during detection, the TDS probe 8 and temperature sensor 81 are positioned at the liquid outlet for accurate measurement. The temperature sensor 81 can also be replaced with an infrared thermometer.

[0073] Example 7:

[0074] refer to Figure 4 and Figure 8 The image shows a specific embodiment of the device for measuring the spectrum of a flowing liquid according to the present invention, which differs from Embodiment 5 in that:

[0075] An exhaust mechanism 9 is provided at the gas-liquid port 14. The exhaust mechanism 9 includes an exhaust valve body 91 and an exhaust valve core 92. An exhaust chamber is provided inside the exhaust valve body 91, and the exhaust valve core 92 is located inside the exhaust chamber. A gas passage structure 93 is also provided on the exhaust valve core 92. The gas passage structure 93 effectively discharges the gas discharged after the liquid flows along the valve chamber 12, so that when the exhaust mechanism 9 is provided, the gas-liquid port 14 is only used to discharge gas, and the liquid in the valve chamber 12 will be discharged through one of the valve chamber ports 13.

[0076] Furthermore, although exemplary embodiments have been described in this invention, their scope includes any and all embodiments based on the invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0077] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of the particular disclosed embodiments. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being able to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0078] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An apparatus for measuring the spectrum of a flowing liquid, characterized in that, include: Fluid mechanism (1), the fluid mechanism (1) comprising: A valve body (11) has a cylindrical valve cavity (12) formed inside the valve body (11). The outer wall of the valve body (11) is also provided with a valve cavity port (13) communicating with the valve cavity (12), so that liquid enters the valve cavity (12) through the valve cavity port (13) and rotates. A gas-liquid port (14) communicating with the valve cavity (12) is formed at the center of one end face of the valve body (11). The flowing liquid rotates along the valve cavity (12) and discharges gas and / or liquid along the gas-liquid port (14). Testing organization (2), said testing organization (2) includes: The emitting component (21) is located on one side of the valve body (11) and is used to emit detection light. The detection light is irradiated along the axial direction of the valve cavity (12) and does not pass through the central region of the valve cavity (12) so that the detection light penetrates the liquid flowing along the valve cavity (12); A receiving component (22) is used to receive detection light that penetrates through the flowing liquid and generate a detection signal; The processing module (23) is used to receive and process the detection signal.

2. The apparatus for measuring the spectrum of a flowing liquid according to claim 1, characterized in that: The valve cavity (12) also forms an annular cavity (16). Multiple liquid inlets (17) are provided on the wall of the annular cavity (16). The multiple liquid inlets (17) are arranged in a circular array along the circumference of the annular cavity (16). Liquid enters the annular cavity (16) through the liquid inlets (17) and rotates.

3. The apparatus for measuring the spectrum of a flowing liquid according to claim 1, characterized in that: The valve body (11) is also provided with a flushing port (15) communicating with the valve cavity (12), and a backflow suppression component (3) is provided at the flushing port (15).

4. The apparatus for measuring the spectrum of a flowing liquid according to claim 3, characterized in that: The backflow suppression component (3) is provided with a flow-blocking block (31).

5. The apparatus for measuring the spectrum of a flowing liquid according to any one of claims 1 to 4, characterized in that: A light-transmitting element (4) is also provided between the transmitting component (21) and the receiving component (22) and the valve body (11).

6. The apparatus for measuring the spectrum of a flowing liquid according to claim 5, characterized in that: The launching assembly (21) includes a launching part (211), and a first bracket (5) is provided on one side of the valve body (11) where the launching assembly (21) is located, and the launching part (211) is located on the first bracket (5).

7. The apparatus for measuring the spectrum of a flowing liquid according to claim 6, characterized in that: The receiving component (22) includes a receiving part (221). The valve body (11) is provided with a first bracket (5) and a second bracket (6) is provided on the opposite side. The receiving part (221) is provided on the second bracket (6) and is used to receive detection light. The processing module (23) includes a first circuit board (231) and a second circuit board (232). The first circuit board (231) is disposed on the first bracket (5) and electrically connected to the transmitting unit (211). The second circuit board (232) is disposed on the second bracket (6) and electrically connected to the receiving unit (221). The first circuit board (231) and the second circuit board (232) are communicatively connected.

8. The apparatus for measuring the spectrum of a flowing liquid according to claim 6, characterized in that: The receiving component (22) includes a receiving part (221) and a reflecting part (222). The valve body (11) is provided with a first bracket (5) and a second bracket (6) is provided on the opposite side. The receiving part (221) is provided on the first bracket (5) and is symmetrically arranged with the emitting part (211). A reflecting light path (61) is formed on the second bracket (6). The reflecting part (222) is provided on the second bracket (6). The detection light penetrates the flowing liquid in the valve body (11) and enters the reflecting light path (61) and is projected onto the reflecting part (222). The reflecting part (222) reflects the detection light so that the receiving part (221) receives the detection light reflected by the reflecting part (222). The processing module (23) includes a circuit board three (233), which is disposed on the first bracket (5). The transmitting part (211) and the receiving part (221) are electrically connected to the circuit board three (233) respectively.

9. The apparatus for measuring the spectrum of a flowing liquid according to any one of claims 7 or 8, characterized in that: The transmitting assembly (21) further includes a convex lens (212). An incident light path (51) for the detection light to pass through is formed in the first bracket (5). The convex lens (212) is disposed in the incident light path (51). The detection light passes through the convex lens (212) and then enters the valve cavity (12).

10. The apparatus for measuring the spectrum of a flowing liquid according to claim 5, characterized in that: A sterilization component (7) is also provided on the side of the valve body (11) away from the side where the emission component (21) is located.

11. The apparatus for measuring the spectrum of a flowing liquid according to claim 5, characterized in that: A TDS probe (8) is installed at the outlet of the valve body (11).

12. The apparatus for measuring the spectrum of a flowing liquid according to claim 11, characterized in that: The TDS probe (8) is equipped with a temperature sensor (81), which is used for temperature compensation calculation.

13. The apparatus for measuring the spectrum of a flowing liquid according to claim 1, characterized in that: The valve chamber (12) is also provided with an exhaust mechanism (9), which includes an exhaust valve body (91) and an exhaust valve core (92). The exhaust valve body (91) is disposed on the valve body (11), and an exhaust chamber is formed inside the exhaust valve body (91). The exhaust chamber is connected to the gas-liquid port (14). The exhaust valve core (92) is disposed inside the exhaust chamber, and a gas passage structure (93) is provided on the exhaust valve core (92). The gas passage structure (93) is used to discharge gas.

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