Concentrated water screen inspection device

Abstract

The utility model discloses a kind of concentrated water screen inspection devices, concentrated water screen inspection device includes test unit, water tank, circulation component, injection unit and image acquisition device.Test unit is used to accommodate concentrated water screen, the water inlet end of test unit is connected with water inlet pipe, the water outlet end of test unit is connected with water outlet pipe, water pump is equipped in water inlet pipe.The water outlet end of water tank is connected with the water inlet end of water inlet pipe, the water inlet end of water tank is connected with the water outlet end of water outlet pipe;Circulation component includes circulation pipeline and circulation valve, the water outlet end of circulation pipeline is connected with the water inlet end of water inlet pipe, the water inlet end of circulation pipeline is connected with the water outlet end of water outlet pipe, and circulation valve is located in circulation pipeline;The liquid outlet end of injection unit is connected with the water inlet end of test unit, injection unit is used to inject tracer into test unit;Image acquisition device is used to photograph the diffusion condition of tracer in test unit.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis filtration technology, and in particular to a concentrated water screen testing device. Background Technology

[0002] Reverse osmosis technology is one of the core technologies in the field of water treatment, widely used in seawater desalination, industrial wastewater reuse, and drinking water purification. In reverse osmosis membrane elements, the concentrate separator is a key structural component. Its main function is to provide a flow channel for the raw water and promote turbulence through its mesh structure. Good turbulence effectively disrupts the concentration polarization boundary layer on the membrane surface, inhibiting solute deposition and scaling, thereby significantly improving the desalination efficiency of the membrane element and extending its service life.

[0003] Traditional methods for inspecting the quality of concentrate separators mainly focus on testing physical and geometric parameters such as the separator's thickness, mesh density, and included angle. These parameters are not strongly correlated with actual fluid dynamics performance and cannot directly reflect its turbulence-promoting ability under actual operating conditions. For accurate evaluation, it is usually necessary to roll the separator into a complete membrane element and conduct long-term operational testing. This method is time-consuming and costly, making it difficult to meet the needs of batch and rapid quality inspection on production lines. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a concentrated water separator testing device.

[0005] This utility model embodiment provides a concentrated water separator testing device, the concentrated water separator testing device comprising: The test unit is used to contain a concentrated water screen. The test unit has a transparent window with a visible inner cavity. The water inlet end of the test unit is connected to a water inlet pipe, and the water outlet end of the test unit is connected to a water outlet pipe. A water pump is installed inside the water inlet pipe. A water tank, wherein the water outlet of the water tank is connected to the water inlet of the water inlet pipe, and the water inlet of the water tank is connected to the water outlet of the water outlet pipe; A circulation assembly includes a circulation pipe and a circulation valve. The outlet end of the circulation pipe is connected to the inlet end of the inlet pipe, and the inlet end of the circulation pipe is connected to the outlet end of the outlet pipe. The circulation valve is located in the circulation pipe. An injection unit is provided, wherein the liquid outlet of the injection unit is connected to the water inlet of the test unit, and the injection unit is used to inject tracer into the test unit. An image acquisition device is used to capture images of the diffusion of the tracer within the test unit through the transparent window.

[0006] The test unit includes a housing and a transparent cover plate. The transparent cover plate forms the transparent window. The housing has an inner cavity with the opening facing upwards. The transparent cover plate is used to block the opening of the housing. The water inlet end of the housing is connected to the water inlet pipe, and the water outlet end of the housing is connected to the water outlet pipe.

[0007] According to some embodiments of the present invention, the water inlet end of the housing is provided with a mixing stabilizer, the water outlet end of the water inlet pipe is connected to the mixing stabilizer, and the liquid outlet end of the injection unit is connected to the mixing stabilizer.

[0008] According to some embodiments of the present invention, the concentrated water screen inspection device further includes a first pipe and a first valve, the outlet end of the water tank is connected to the inlet end of the first pipe, the outlet end of the first pipe is connected to the inlet end of the inlet pipe, and the first valve is located on the first pipe.

[0009] According to some embodiments of the present invention, the concentrated water screen inspection device further includes a second pipe and a second valve. The inlet end of the water tank is connected to the outlet end of the second pipe, the inlet end of the second pipe is connected to the outlet end of the outlet pipe, and the second valve is located on the second pipe.

[0010] According to some embodiments of the present invention, the water inlet pipe is provided with a flow rate control unit, which is located between the water pump and the water inlet end of the test unit.

[0011] According to some embodiments of the present invention, the concentrated water screen testing device further includes a third pipe and a third valve. The liquid outlet of the injection unit is connected to the water inlet of the third pipe, the water outlet of the third pipe is connected to the water inlet of the test unit, and the third valve is located on the third pipe.

[0012] According to some embodiments of this utility model, the water pump is a constant flow pump.

[0013] According to some embodiments of the present invention, the image acquisition device is located above the housing and faces downwards to take pictures.

[0014] The concentrated water separator testing device according to the embodiments of this utility model has at least the following technical effects: 1. Place the concentrated water screen to be tested inside the test unit, close the circulation valve, open the inlet and outlet of the water tank, and turn on the water pump to circulate the water between the inlet pipe, the test unit, the outlet pipe, and the water tank for a certain period of time, thereby expelling the gas in the pipe and allowing the gas to enter the water tank; then, open the circulation valve, close the inlet and outlet of the water tank, and turn on the water pump to circulate the water between the circulation pipe, the inlet pipe, the test unit, and the outlet pipe for a certain period of time to ensure stable water flow; next, control the injection unit to inject tracer into the test unit, turn on the image acquisition device, and take pictures of the diffusion of the tracer in the test unit at regular intervals; finally, fit the diffusion area of ​​the tracer to the diffusion time into a curve to obtain the turbulent diffusion efficiency.

[0015] 2. After the system exhaust is completed, the circulation component isolates the flow path from the water tank by switching valves, forming an independent, constant-volume circulation system. This allows the flow field to run continuously in a closed environment until it reaches a completely stable state, avoiding disturbances from external factors such as changes in the water tank level. Furthermore, it effectively prevents the tracer injected later from being diluted by a large amount of water in the tank, thus ensuring that the tracer has sufficient concentration and duration in the test loop for the image acquisition device to clearly capture its diffusion process.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the concentrated water separator testing device according to some embodiments of this utility model; Figure 2 This is a schematic diagram of the structure of the test unit in some embodiments of this utility model; Figure 3 These are test numerical diagrams of different specifications of concentrate separators according to some embodiments of this utility model.

[0018] Icon labels: Test unit 100; Inlet pipe 110; Outlet pipe 120; Water pump 130; Housing 141; Transparent cover 142; Mixing stabilizer 143; Flow rate control unit 150; Water tank 200; First pipe 210; First valve 211; Second pipe 220; Second valve 221; Circulation component 300; circulation pipe 310; circulation valve 311; Injection unit 400; third pipeline 410; third valve 411. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0024] According to some embodiments of this utility model, refer to Figure 1 and Figure 2The concentrated water screen testing device includes a testing unit 100, a water tank 200, a circulation assembly 300, an injection unit 400, and an image acquisition device. The testing unit 100 houses the concentrated water screen and has a transparent window allowing viewing of its interior. An inlet pipe 110 connects to the inlet end of the testing unit 100, and an outlet pipe 120 connects to the outlet end. A water pump 130 is installed inside the inlet pipe 110. The outlet end of the water tank 200 connects to the inlet end of the inlet pipe 110, and the inlet end of the water tank 200 connects to the outlet end of the outlet pipe 120. The circulation assembly 300 includes a circulation pipe 310 and a circulation valve 311. The outlet end of the circulation pipe 310 connects to the inlet end of the inlet pipe 110, and the inlet end of the circulation pipe 310 connects to the outlet end of the outlet pipe 120. The circulation valve 311 is located within the circulation pipe 310. The liquid outlet of the injection unit 400 is connected to the water inlet of the test unit 100, and the injection unit 400 is used to inject tracer into the test unit 100. The image acquisition device is used to photograph the diffusion of the tracer in the test unit 100 through a transparent window.

[0025] When testing the concentrated water separator, place the separator to be tested inside the test unit 100, close the circulation valve 311, open the inlet and outlet of the water tank 200, and turn on the water pump 130. The water in the water tank 200 enters the inlet pipe 110, and the water circulates between the inlet pipe 110, the test unit 100, the outlet pipe 120, and the water tank 200 for a certain period of time, thereby expelling the gas in the pipe. When the gas enters the water tank 200, it will float to the top of the water tank 200 and be discharged upwards to the atmosphere, preventing the gas from re-entering the pipe and thus avoiding the formation of air resistance that would cause uneven water flow distribution and interfere with the ink diffusion trajectory.

[0026] Subsequently, the circulation valve 311 is opened, and the inlet and outlet of the water tank 200 are closed. The water pump 130 is kept running, allowing water to circulate between the circulation pipe 310, the inlet pipe 110, the test unit 100, and the outlet pipe 120 for a certain period of time. This ensures a stable water flow and prevents the water in the tank 200 from diluting the subsequently introduced tracer. Next, the injection unit 400 is controlled to inject the tracer into the test unit 100. The image acquisition device is then activated, and images of the tracer diffusion within the test unit 100 are captured at regular intervals. Finally, the diffusion area and diffusion time of the tracer are fitted into a curve to obtain the turbulent diffusion efficiency.

[0027] Understandably, after the system exhausts, the circulation component 300 isolates the flow path from the water tank 200 by switching valves, forming an independent, constant-volume circulation system. This allows the flow field to run continuously in a closed environment until it reaches a completely stable state, avoiding disturbances from external factors such as changes in the water level of the water tank 200. Furthermore, it effectively prevents the tracer injected subsequently from being diluted by a large amount of water in the water tank 200, thereby ensuring that the tracer has sufficient concentration and duration in the test loop for the image acquisition device to clearly capture its diffusion process.

[0028] It should be noted that, based on the principle in fluid mechanics that "turbulence intensity is positively correlated with mass diffusion rate," and combined with the flow field characteristics on the concentrate side of the reverse osmosis membrane element, a correspondence between "ink diffusion behavior and turbulence effect" is established, and the judgment criteria are as follows: ①Solution: The core function of the concentrated water barrier is to disrupt the water boundary layer and generate eddies (turbulence). The higher the turbulence intensity, the more intense the momentum exchange between fluid molecules, and the faster the mixing rate of ink (tracer) and water, and the more uniform the spatial distribution. Conversely, if the barrier has poor turbulence effect, the water flow is prone to laminar flow, and the ink diffusion is dominated by molecular diffusion, resulting in a slow rate and limited range.

[0029] ② Quantitative judgment: By observing the change of ink diffusion area over time at regular intervals, a "diffusion area-time curve" is constructed. The upward slope of the curve (early diffusion rate) reflects the "dynamic mixing ability" of turbulence, and the final stable area reflects the "spatial coverage ability" of turbulence. The combination of the two can objectively quantify the turbulence effect of the screen, avoiding the subjectivity of traditional visual observation.

[0030] ③ System matching: The turbulence effect of the concentrate separator is affected by factors such as the feed water flow rate, membrane pressure, and size specifications during the actual operation of the reverse osmosis membrane element. In order to objectively reflect the impact of the turbulence effect of the concentrate separator on the membrane element performance, it is necessary to simulate the actual use environment of the concentrate separator. Only then can the turbulence effect of the separator be reproduced through the test system, ensuring that the test results are consistent with the actual working scenario of the membrane element.

[0031] According to some embodiments of this utility model, the test unit 100 includes a housing 141 and a transparent cover plate 142. The transparent cover plate 142 forms a transparent window. The housing 141 has an inner cavity with the opening facing upwards. The transparent cover plate 142 is used to seal the opening of the housing 141. The water inlet end of the housing 141 is connected to the water inlet pipe 110, and the water outlet end of the housing 141 is connected to the water outlet pipe 120. The image acquisition device uses, for example, an industrial camera or a high-definition video camera to record the dynamic process of tracer diffusion through the transparent cover plate 142. The material of the transparent cover plate 142 is preferably a material with high light transmittance, high hardness, and good chemical resistance, such as acrylic (PMMA) or tempered glass, providing a distortion-free observation window for the image acquisition device. Its rigidity can also apply a certain compressive force to the concentrate separator, simulating the compression state of the membrane on the separator in an actual spiral wound membrane element, ensuring the authenticity of the test conditions.

[0032] According to some embodiments of this utility model, refer to Figure 2 The housing 141 has a mixing stabilizer 143 at its inlet end, and the inlet end of the inlet pipe 110 is connected to the mixing stabilizer 143. The outlet end of the injection unit 400 is also connected to the mixing stabilizer 143. The inner cavity of the mixing stabilizer 143 typically contains a honeycomb or porous plate structure to eliminate vortices and uneven flow velocities caused by upstream pipes and bends, forming a uniform, near-laminar inlet velocity profile. This ensures that any diffusion and mixing patterns subsequently observed within the test unit 100 can be determined to be caused by the test grid, rather than interference from upstream or the injection process, greatly improving anti-interference capability and test accuracy.

[0033] According to some embodiments of this utility model, refer to Figure 1 The concentrated water separation screen testing device also includes a first pipe 210 and a first valve 211. The outlet of the water tank 200 is connected to the inlet of the first pipe 210, and the outlet of the first pipe 210 is connected to the inlet of the inlet pipe 110. The first valve 211 is located on the first pipe 210. The concentrated water separation screen testing device also includes a second pipe 220 and a second valve 221. The inlet of the water tank 200 is connected to the outlet of the second pipe 220, and the inlet of the second pipe 220 is connected to the outlet of the outlet pipe 120. The second valve 221 is located on the second pipe 220. This avoids the need to manually open or close the inlet and outlet of the water tank 200, allowing the inlet of the water tank 200 to be directly connected to the first pipe 210, and the outlet of the water tank 200 to be connected to the second pipe 220. The water flow in the water tank 200 is controlled by opening or closing the first valve 211 and the second valve 221.

[0034] Understandably, when testing the concentrated water separator, the separator to be tested is placed inside the test unit 100. The circulation valve 311 is closed, and the first valve 211 and the second valve 221 are opened. The water pump 130 is turned on, and water from the water tank 200 enters the inlet pipe 110. The water circulates between the inlet pipe 110, the test unit 100, the outlet pipe 120, and the water tank 200 for a certain period, thereby expelling gas from the pipes. Next, the first valve 211 and the second valve 221 are closed, and the circulation valve 311 is opened to ensure a stable water flow, while preventing the water in the water tank 200 from diluting the subsequently introduced tracer. Then, the injection unit 400 is controlled to inject the tracer into the test unit 100.

[0035] Preferred, refer to Figure 1 The inlet pipe 110 is equipped with a flow rate control unit 150, which is located between the water pump 130 and the inlet end of the test unit 100. The flow rate control unit 150 can be a precision regulating valve, a mass flow controller, or a pump control system linked to a frequency converter. Through this flow rate control unit 150, the user can accurately set and maintain the flow rate through the mesh, so that the test conditions can be flexibly matched to various practical applications, thereby evaluating the performance of the mesh under specific working conditions.

[0036] Preferred, refer to Figure 1 The concentrated water screen testing device also includes a third pipe 410 and a third valve 411. The outlet end of the injection unit 400 is connected to the inlet end of the third pipe 410, and the outlet end of the third pipe 410 is connected to the inlet end of the test unit 100. The third valve 411 is located in the third pipe 410. When tracer needs to be injected, the third valve 411 is opened, and the tracer in the injection unit 400 enters the test unit 100 through the third pipe 410.

[0037] According to some embodiments of this utility model, the water pump 130 is a constant flow pump. The image acquisition device is located above the housing 141 and faces downwards for imaging. Even when the system resistance (e.g., changes in water viscosity due to differences in the mesh or temperature variations) changes slightly, the constant flow pump can maintain a constant outlet flow rate, directly ensuring the stability of the "flow velocity," the core variable. The vertical imaging layout directly above the image acquisition device minimizes geometric distortion caused by perspective effects, allowing a simple and accurate linear correspondence between the pixel area in the image and the actual physical area. This simplifies the calibration and calculation process of the image analysis software and improves the accuracy of area measurement.

[0038] The testing method in this embodiment includes the following steps: S100: Place the concentrated water mesh to be tested inside the test unit 100; S200: Close the circulation valve 311, open the inlet and outlet of the water tank 200, and turn on the water pump 130 to make the water circulate between the inlet pipe 110, the test unit 100, the outlet pipe 120 and the water tank 200 for a certain period of time. S300: Open the circulation valve 311, close the inlet and outlet of the water tank 200, and turn on the water pump 130 to make the water circulate between the circulation pipe 310, the inlet pipe 110, the test unit 100 and the outlet pipe 120 for a certain period of time. S400: Control the injection unit 400 to inject tracer into the test unit 100, turn on the image acquisition device, and take pictures of the diffusion of tracer in the test unit 100 at regular intervals. S500: The diffusion area of ​​the tracer is fitted to a curve with the diffusion time to obtain the turbulent diffusion efficiency.

[0039] In one embodiment: 1. Preparation stage: ① Concentrate screen cutting: Cut the concentrate screen to a size of 500mm long * 200mm wide. The concentrate screen material can be PP or PET, with a thickness of 0.2-0.7mm, a mesh angle of 50-95°, and an SPI mesh count of 15-35. Wash the screen with pure water and let it dry for later use. (Refer to...) Figure 3 The concentrate separators with a thickness of 0.2 mm and 32 SPI wires, a thickness of 0.43 mm and 25 SPI wires, and a thickness of 0.7 mm and 16 SPI wires were tested respectively.

[0040] ② Test unit 100 structure installation: Lay the cleaned concentrated water separator flat inside the housing 141, avoiding wrinkles and misalignment. Align the edge of the separator with the inner wall edge of the housing 141, controlling the error to ≤1mm. Cover the housing 141 with a transparent cover plate 142 to seal the upper opening of the housing 141. The transparent cover plate 142 is preferably an acrylic plate to ensure a leak-free seal.

[0041] 2. Exhaust stage: ① Open the first valve 211 and the second valve 221, while keeping the circulation valve 311 and the third valve 411 closed.

[0042] ② Start the water pump 130. The water pump 130 is a constant flow pump. The flow rate is controlled at 1.5-2L / min by the flow rate control unit 150 and runs continuously for about 10 minutes.

[0043] ③ Observe the water inlet of water tank 200. When the water flow is uninterrupted and there are no air bubbles, and there are no visible air bubbles in test unit 100, it is determined that the air in the test system has been purged.

[0044] 3. Full-cycle testing phase: ① Open the circulation valve 311, close the first valve 211 and the second valve 221, control the flow rate control unit 150 to the required outlet flow rate for the simulation test, and run it continuously for 15 minutes to allow the flow field to reach a stable state. Observe the pre-mixing stabilizer 143 at the inlet of the test unit 100. If the water flow has no vortex and the flow rate is uniform, then the process is considered to be stable.

[0045] ② Open the third valve 411, and the injection unit 400 injects ink into the mixing stabilizer 143. A micro-injection pump is required. The pure water is used to prepare a 0.5% concentration of Rhodamine-B test colorimetric ink. The injection volume can be adjusted to 0.5-1 ml / time, and the injection speed is 0.2 ml / s. Inject slowly to prevent disturbing the flow field. ③ After ink injection, maintain water circulation for 5 minutes. Then, use an image acquisition device (camera) to photograph the ink dispersion effect through the transparent cover plate 142, with a photographing interval of 5-10 seconds. Image analysis software is then used to calculate the area of ​​the ink region within the photographs, obtaining the ink dispersion area data. A scatter plot is then plotted with the shooting time as the X-axis and the ink dispersion area as the Y-axis, and fitted as a curve to analyze the turbulent diffusion efficiency of the concentrated water separator. In the experiment, an ink dispersion area greater than 70-80% of the total separator area within 1 minute is considered a good turbulent diffusion effect.

[0046] from Figure 3 It can be seen that among the three different specifications of concentrate screens, the concentrate screen with a thickness of 0.2 mm and SPI wire count of 32 has the best turbulence effect.

[0047] The working process of this embodiment includes: First, system preparation is performed. The concentrate separator to be tested (material can be PP or PET) is cut to standard size (e.g., 500mm long * 200mm wide) and cleaned, and placed flat inside the housing 141 of the test unit 100, ensuring that its edges are aligned with the inner wall of the housing 141 and without wrinkles. Then, the housing 141 is sealed with a transparent cover plate 142, which provides an optical path while simulating the actual pressure of the diaphragm on the separator.

[0048] Next, the venting phase begins. The first valve 211 and the second valve 221 are opened via the control system, while the circulation valve 311 and the third valve 411 remain closed. The water pump 130, acting as a constant flow pump, is started, and a low flow rate (e.g., 1.5-2 L / min) is set via the flow rate control unit 150. This allows water to flow through the water tank 200, the first pipe 210, the inlet pipe 110, the test unit 100, the outlet pipe 120, and the second pipe 220, ultimately returning to the water tank 200, forming an open loop. This process lasts approximately 10 minutes, using the liquid level in the water tank 200 to completely expel air from the piping system until no air bubbles are observed in the return pipe, ensuring the purity of the test medium.

[0049] Then, the system switches to the flow field stabilization stage. The control system closes the first valve 211 and the second valve 221, while simultaneously opening the circulation valve 311, switching the flow path to a closed loop consisting of the circulation pipe 310, the inlet pipe 110, the test unit 100, and the outlet pipe 120. The flow rate is precisely adjusted to the target simulated operating condition value by the flow rate control unit 150, and the system is allowed to operate stably in this state for approximately 15 minutes. This is to eliminate the transient effects caused by valve switching, ensure that the flow field within the test unit 100 reaches a complete steady state, and prevent the subsequently injected tracer from being diluted by the water tank 200.

[0050] Subsequently, the data acquisition phase is executed. After the flow field stabilizes, the control system opens the third valve 411, driving the micro-injection pump connected to the injection unit 400 to inject precisely measured tracer (e.g., 0.5% Rhodamine-B solution) through the third conduit 410 into the flow stabilizer located at the inlet of the test unit 100 at an extremely slow rate (e.g., 0.2 ml / s). After the tracer is injected, the image acquisition device located above the test unit 100 is immediately activated, continuously photographing the tracer diffusion within the test unit 100 at fixed time intervals (e.g., every 5-10 seconds) for several minutes.

[0051] Finally, the data analysis and evaluation stage begins. A series of acquired images are imported into image analysis software, which automatically identifies the tracer-covered area in each image and calculates its area. A scatter plot of "diffusion area - time" is plotted with the capture time on the x-axis and the corresponding diffusion area on the y-axis, and mathematically fitted to obtain a smooth curve. By analyzing the initial slope of this curve (representing dynamic mixing capacity) and the final platform area (representing spatial coverage capacity), a comprehensive "turbulent diffusion efficiency" is calculated. Finally, this efficiency value is compared with a preset quality standard (e.g., whether the diffusion area exceeds 70-80% of the total area within 1 minute), thus making an objective judgment of "good" or "poor" on the quality of the concentrate filter. The entire process operates collaboratively, achieving a rapid, accurate, and highly relevant performance characterization of the core functions of the concentrate filter under actual operating conditions.

[0052] In this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A concentrated water separator testing device, characterized in that, include: Test unit (100), the test unit (100) is used to contain concentrated water screen, the test unit (100) has a transparent window for viewing the inner cavity, the water inlet end of the test unit (100) is connected to a water inlet pipe (110), the water outlet end of the test unit (100) is connected to a water outlet pipe (120), and a water pump (130) is provided inside the water inlet pipe (110). Water tank (200), the water outlet of the water tank (200) is connected to the water inlet of the water inlet pipe (110), and the water inlet of the water tank (200) is connected to the water outlet of the water outlet pipe (120); The circulation assembly (300) includes a circulation pipe (310) and a circulation valve (311). The outlet end of the circulation pipe (310) is connected to the inlet end of the inlet pipe (110), and the inlet end of the circulation pipe (310) is connected to the outlet end of the outlet pipe (120). The circulation valve (311) is located on the circulation pipe (310). An injection unit (400) is provided, wherein the liquid outlet of the injection unit (400) is connected to the water inlet of the test unit (100), and the injection unit (400) is used to inject tracer into the test unit (100). An image acquisition device is used to capture images of the diffusion of the tracer within the test unit (100) through the transparent window.

2. The concentrated water separator testing device according to claim 1, characterized in that, The test unit (100) includes a housing (141) and a transparent cover plate (142). The transparent cover plate (142) forms the transparent window. The housing (141) has an inner cavity with the opening facing upward. The transparent cover plate (142) is used to block the opening of the housing (141). The water inlet end of the housing (141) is connected to the water inlet pipe (110), and the water outlet end of the housing (141) is connected to the water outlet pipe (120).

3. The concentrated water separator testing device according to claim 2, characterized in that, The housing (141) has a mixing stabilizer (143) at the water inlet end, the water outlet end of the water inlet pipe (110) is connected to the mixing stabilizer (143), and the liquid outlet end of the injection unit (400) is connected to the mixing stabilizer (143).

4. The concentrated water separator testing device according to claim 1, characterized in that, The concentrated water screen inspection device also includes a first pipe (210) and a first valve (211). The outlet of the water tank (200) is connected to the inlet of the first pipe (210), the outlet of the first pipe (210) is connected to the inlet of the inlet pipe (110), and the first valve (211) is located on the first pipe (210).

5. The concentrated water separator testing device according to claim 1, characterized in that, The concentrated water screen inspection device also includes a second pipe (220) and a second valve (221). The inlet end of the water tank (200) is connected to the outlet end of the second pipe (220), the inlet end of the second pipe (220) is connected to the outlet end of the outlet pipe (120), and the second valve (221) is located on the second pipe (220).

6. The concentrated water separator testing device according to claim 1, characterized in that, The inlet pipe (110) is equipped with a flow rate control unit (150), which is located between the water pump (130) and the inlet end of the test unit (100).

7. The concentrated water separator testing device according to claim 1, characterized in that, The concentrated water screen testing device also includes a third pipe (410) and a third valve (411). The liquid outlet of the injection unit (400) is connected to the water inlet of the third pipe (410), the water outlet of the third pipe (410) is connected to the water inlet of the test unit (100), and the third valve (411) is located on the third pipe (410).

8. The concentrated water separator testing device according to claim 1, characterized in that, The water pump (130) is a constant flow pump.

9. The concentrated water separator testing device according to claim 2, characterized in that, The image acquisition device is located above the housing (141) and faces downwards to take pictures.

Images