Device for detecting cleaning effect of ultrafiltration membrane silk

Abstract

The utility model discloses a device for detecting the cleaning effect of an ultrafiltration membrane filament, which comprises a membrane filament assembly, a membrane filament detection module, a membrane filament detection module, a membrane filament detection module, a membrane filament detection module and a membrane filament detection module, and is characterized in that the membrane filament assembly comprises an inlet end and a clear water outlet end, and is internally provided with ultrafiltration membrane filaments for filtering clear water; the gas washing module is connected with the inlet end and is used for carrying out gas washing operation on the membrane wire assembly; the water washing module is also connected with the inlet end and is used for carrying out water washing operation on the membrane filament assembly; and the detection assembly is arranged and connected to the clean water outlet end and is used for detecting the membrane flux of the cleaned ultrafiltration membrane filaments so as to determine the cleaning effect of the ultrafiltration membrane filaments. The device for detecting the cleaning effect of the ultrafiltration membrane silk can accurately simulate the actual operation and chemical cleaning process of the ultrafiltration membrane silk so as to reduce the error between the experimental cleaning effect and the actual cleaning effect.

Description

Technical Field

[0001] The utility model generally relates to the technical field of chemical product detection devices, and more specifically, relates to a device for detecting the cleaning effect of ultrafiltration membrane fibers. Background Art

[0002] As a rapidly developing water treatment process, ultrafiltration has the characteristics of simple equipment, small footprint, low operating pressure, low material requirements, and high processing accuracy. Ultrafiltration membrane is a polymer semipermeable membrane used in the ultrafiltration process that can separate polymer colloids or suspended particles of a certain size from the solution.

[0003] With the widespread application of ultrafiltration membranes, during the ultrafiltration process, macromolecular substances such as particles, colloids or solutes in the solution undergo physical, chemical, biochemical or mechanical reactions when in contact with the ultrafiltration membrane, and are easily adsorbed or deposited on the membrane surface or in the membrane pores. The accumulation of microorganisms on the surface of the ultrafiltration membrane will cause the membrane pore size to become smaller or blocked, resulting in a significant reduction in the water production and separation characteristics of the ultrafiltration membrane. When the ultrafiltration membrane is blocked, using a membrane cleaning agent to perform maintenance cleaning on the ultrafiltration membrane is an effective method to restore the operating flux of the ultrafiltration membrane. However, the prior art device for detecting the cleaning effect of the ultrafiltration membrane cannot fully simulate the operating process of ultrafiltration chemical cleaning, resulting in an error between the experimental cleaning effect and the actual cleaning effect.

[0004] In view of this, there is an urgent need to provide a device for detecting the cleaning effect of ultrafiltration membrane filaments, so as to accurately simulate the actual operation and chemical cleaning process of ultrafiltration membrane filaments, so as to reduce the error between the experimental cleaning effect and the actual cleaning effect. Utility Model Content

[0005] In order to at least solve one or more of the technical problems mentioned above, the utility model proposes a solution of a device for detecting the cleaning effect of ultrafiltration membrane filaments.

[0006] In some embodiments, the utility model provides a device for detecting the cleaning effect of ultrafiltration membrane filaments, comprising: a membrane filament assembly, which includes an inlet end and a clean water outlet end and a built-in ultrafiltration membrane filament for filtering clean water; an air washing module, which is connected to the inlet end and is used to perform air washing operations on the membrane filament assembly; a water washing module, which is also connected to the inlet end and is used to perform water washing operations on the membrane filament assembly; and a detection assembly, which is arranged and connected to the clean water outlet end and is used to detect the membrane flux of the ultrafiltration membrane filament after cleaning, so as to determine the cleaning effect of the ultrafiltration membrane filament.

[0007] In some embodiments, the air washing module includes: an air compressor, which is connected to the inlet end of the membrane filament assembly through an air pipeline; and a first regulating valve, which is arranged on the air pipeline and is used to adjust the air supply flow rate.

[0008] In some embodiments, the air washing module further includes: a gas float flowmeter, which is arranged on the air pipeline between the first regulating valve and the inlet end, and is used to monitor the gas supply flow.

[0009] In some embodiments, the water washing module includes: a water tank having a top opening and a bottom opening for containing clean water or a cleaning agent, wherein the bottom opening is connected to the inlet end of the membrane filament assembly through a liquid pipeline; a booster pump, which is arranged on the liquid pipeline, and is used to supply water and boost the pressure for the device for testing the cleaning effect of the membrane filament assembly; a second regulating valve, which is arranged on the liquid pipeline between the booster pump and the inlet end of the membrane element, and is used to adjust the water supply flow.

[0010] In some embodiments, the water washing module also includes: a filter, which is arranged on the liquid pipeline between the second regulating valve and the inlet end, and is used to filter impurities in water or mixed liquid; a third regulating valve, which is arranged on the liquid pipeline between the filter and the inlet end, and is used to disconnect the water circuit when replacing the filter element of the filter.

[0011] In some embodiments, the water washing module also includes: a flow meter, which is arranged on the liquid pipeline between the third regulating valve and the inlet end, and is used to calculate the instantaneous flow and cumulative flow when water flows through; a pressure transmitter, which is arranged on the liquid pipeline between the flow meter and the inlet end, and is used to monitor the device pressure when water flows through; wherein a self-locking tee is installed on the liquid pipeline between the flow meter and the pressure transmitter.

[0012] In some embodiments, the water washing module also includes: a pressure relief pipeline, one end of which is connected to the liquid pipeline between the boosting pump and the second regulating valve, and the other end is arranged at the top opening. A fourth regulating valve is arranged on the pressure relief pipeline for relieving pressure and regulating the reflux flow.

[0013] In some embodiments, the detection component is a pressure gauge, which is arranged on the return pipe. One end of the return pipe is connected to the clean water outlet, and the other end is arranged at the top opening of the water tank. A fifth regulating valve is also arranged on the return pipe for adjusting the water outlet flow rate of the membrane filament assembly.

[0014] In some embodiments, the air washing module includes: an air compressor, which is connected to the inlet end of the membrane filament assembly through an air pipeline; a first regulating valve, which is arranged on the air pipeline and is used to adjust the air supply flow; one end of the self-locking tee is connected to the air pipeline for performing air washing and water washing operations on the ultrafiltration membrane filaments at the same time.

[0015] In some embodiments, the membrane fiber assembly includes: a concentrate water outlet end for discharging wastewater generated by the membrane fiber assembly during testing, the concentrate water outlet end is arranged on the concentrate water pipeline, and a sixth regulating valve is arranged on the concentrate water pipeline for adjusting the concentrate water flow rate.

[0016] Through the above description, it can be understood that the utility model provides a device for detecting the cleaning effect of ultrafiltration membrane filaments. Specifically, through the design of the membrane filament assembly, the air washing module, the water washing module and the detection assembly, the solution of the utility model can accurately simulate the actual operation and chemical cleaning process of the ultrafiltration membrane filaments to reduce the error between the experimental cleaning effect and the actual cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0018] Figure 1 A schematic diagram of a device for detecting the cleaning effect of ultrafiltration membrane filaments according to an embodiment of the utility model is shown;

[0019] Figure 2 A schematic diagram of a membrane filament assembly according to an embodiment of the utility model is shown;

[0020] Figure 3 Another schematic diagram of a device for detecting the cleaning effect of ultrafiltration membrane filaments according to an embodiment of the utility model is shown.

[0021] Reference numerals:

[0022] 100, membrane wire assembly; 101, inlet end; 102, clean water outlet end; 103, hose; 104, plug; 105, self-locking tee; 1051, first side port; 1052, second side port; 1053, third side port; 106, concentrated water outlet end; 107, sixth regulating valve;

[0023] 200, air washing module; 201, air compressor; 202, first regulating valve; 203, gas float flowmeter;

[0024] 300, water washing module; 301, water tank; 302, booster pump; 303, second regulating valve; 304, filter; 305, third regulating valve; 306, flow meter; 307, pressure transmitter; 308, fourth regulating valve;

[0025] 400. Detection component. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0027] It should be understood that the terms "include" and "comprises" used in the description and claims of the present invention indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. As used in the utility model specification and claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the utility model specification and claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0029] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0030] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0031] Figure 1 A schematic diagram of a device 10 for detecting the cleaning effect of ultrafiltration membrane filaments according to an embodiment of the utility model is shown.

[0032] like Figure 1As shown, the device 10 of the utility model may include a membrane filament assembly 100, an air washing module 200, a water washing module 300 and a detection assembly 400. In one embodiment, the membrane filament assembly 100 may include an inlet port 101 and a clean water outlet port 102 and a built-in ultrafiltration membrane filament for filtering clean water. Further, the air washing module 200 is connected to the inlet port 101 for air washing the membrane filament assembly 100. Similarly, the water washing module 300 of the device 10 is also connected to the inlet port 101 for water washing the membrane filament assembly 100. The detection assembly 400 is arranged and connected to the clean water outlet port 102, and is used to detect the membrane flux of the ultrafiltration membrane filament after cleaning, so as to determine the cleaning effect of the cleaning agent on the ultrafiltration membrane filament.

[0033] In an exemplary actual operation, when it is necessary to detect the cleaning effect of different cleaning agents on the fouled ultrafiltration membrane filaments, firstly, a clean ultrafiltration membrane filament is placed in the membrane filament assembly 100 (clean ultrafiltration membrane filament refers to an unused ultrafiltration membrane filament), and the water washing module 300 is used to wash it, and then the detection assembly 400 can be used to detect the membrane flux passing through the clean ultrafiltration membrane filament, and the obtained membrane flux can be recorded.

[0034] Then, the blocked ultrafiltration membrane filaments are placed in the membrane filament assembly 100, and are washed with water using the water washing module 300. The membrane flux of the blocked ultrafiltration membrane filaments is detected using the detection assembly 400, and the obtained membrane flux is recorded.

[0035] After that, the ultrafiltration membrane wire that is blocked by dirt can be taken and placed in the membrane wire assembly 100. After the cleaning agent prepared in a certain proportion is placed in the water washing module 300, the air washing module 200 and the water washing module 300 are started at the same time to perform air washing and water washing operations on the ultrafiltration membrane wire that is blocked by dirt in the membrane wire assembly 100, that is, the ultrafiltration membrane wire that is blocked by dirt is cleaned. After the cleaning is completed, the membrane cleaning agent of the water washing module 300 can be replaced with clean water, and the water washing module can be used again to wash the cleaned ultrafiltration membrane wire. Similarly, the detection component 400 can detect the membrane flux of the ultrafiltration membrane wire after cleaning, and record the obtained membrane flux for comprehensive comparison.

[0036] It can be seen that, through the design including the membrane filament assembly 100, the air washing module 200, the water washing module 300 and the detection assembly 400, the solution of the utility model can accurately simulate the actual operation and chemical cleaning process of the ultrafiltration membrane filament, and by comparing the recorded membrane flux, the cleaning effect of different cleaning agents can be accurately tested.

[0037] Figure 2 FIG. 1 is a schematic diagram of a membrane filament assembly 100 according to an embodiment of the present invention. Figure 2 and Figure 3The membrane assembly 100 may include an inlet end 101, a clean water outlet end 102, and a concentrated water outlet end 106, and has an ultrafiltration membrane built therein for filtering clean water. Specifically, the membrane assembly 100 may be made of a transparent plastic pressure tube, which has a certain length of ultrafiltration membrane built therein, one end of which is sealed with a hot melt glue gun, and the other end is connected to the air washing module 200 and the water washing module 300.

[0038] In the exemplary installation process, when it is necessary to make the membrane wire assembly 100, firstly cut a certain number and a certain length of ultrafiltration membrane wire, fold it in half and put it into the hose 103. The hose 103 is provided with membrane wire holes, and the membrane wire holes are kept uniformly on one side of the hose 103. Then a hot melt glue gun can be used to seal one side of the membrane wire hole to form a plug 104. The membrane wire hole needs to be exposed, and it is strictly forbidden to seal the membrane wire hole into the plug 104. After the sealing is completed, one side of the membrane wire hole serves as the outlet end 102 of the filtered clean water; the other side of the membrane wire hole is connected to the air washing module 200 and the water washing module 300, and more specifically, the other side is connected to the self-locking tee 105, wherein the self-locking tee 105 includes a first side port 1051, a second side port 1052 and a third side port 1053.

[0039] In one embodiment, the first side port 1051 is connected to the hose 103, and then connected to the air washing module 200 and the water washing module 300, so as to serve as the water inlet of clean water or cleaning agent. The third side port 1053 discharges the sewage generated by the membrane fiber assembly 100 during the test process through the concentrated water outlet port 106. The concentrated water outlet port 106 is arranged on the concentrated water pipeline, and the concentrated water pipeline can also be provided with a sixth regulating valve 107 for adjusting the concentrated water flow rate.

[0040] Figure 3 Another schematic diagram of the device 10 for detecting the cleaning effect of ultrafiltration membrane filaments according to an embodiment of the utility model is shown. Figure 1 and Figure 3 The air washing module 200 shown in the figure may include an air compressor 201 , a first regulating valve 202 and a gas float flowmeter 203 .

[0041] During operation, the air compressor 201 is connected to the inlet end 101 of the membrane filament assembly 100 through an air pipeline. The first regulating valve 202 is arranged on the air pipeline to adjust the air supply flow rate. The gas float flowmeter 203 is arranged on the air pipeline between the first regulating valve 202 and the inlet end 101 to monitor the air supply flow rate.

[0042] In an application scenario, the device for detecting the cleaning effect of ultrafiltration membrane filaments of the utility model can be connected to a controller to realize automatic operation of the device. When it is necessary to detect the membrane flux of the blocked ultrafiltration membrane filaments for air washing operation, take the blocked ultrafiltration membrane filaments and place them in the membrane filament assembly 100, turn on the power of the device, and the touch screen of the controller can automatically display the recommended gas flow rate. Then manually enter the running time on the touch screen, and then the air compressor 201 starts. Then adjust the first regulating valve 202 to adjust the gas flow rate to about the gas flow rate recommended by the touch screen, and perform air washing operation on the membrane filament assembly 100. After the running time is over, the device automatically stops running, and the touch screen displays the data of the membrane flux of the blocked ultrafiltration membrane filaments.

[0043] Combination Figure 1 and Figure 3 As shown in the water washing module 300, those skilled in the art can see that the water washing module 300 of the utility model can specifically include a water tank 301, a booster pump 302, a second regulating valve 303, a filter 304, a third regulating valve 305, a flow meter 306, a pressure transmitter 307 and a fourth regulating valve 308.

[0044] In terms of specific structure and connection, the water tank 301 is provided with a top opening and a bottom opening for containing clean water or cleaning agent, and the bottom opening is connected to the inlet end 101 of the membrane filament assembly through a liquid pipeline. The booster pump 302 is arranged on the liquid pipeline to supply water and boost pressure for the device for testing the cleaning effect of the membrane filament assembly. The second regulating valve 303 is arranged on the liquid pipeline between the booster pump 302 and the inlet end 101 of the membrane element, and is used to adjust the water supply flow rate. The filter 304 is arranged on the liquid pipeline between the second regulating valve 303 and the inlet end 101, and is used to filter impurities in water or mixed liquid. Preferably, the filter 304 can be a 5μm (5 micron filter pore size) precision filter.

[0045] In one embodiment, the third regulating valve 305 is arranged on the liquid pipeline between the filter 304 and the inlet end 101, and is used to disconnect the water circuit when the filter element of the filter 304 is replaced. The flow meter 306 is arranged on the liquid pipeline between the third regulating valve 305 and the inlet end 101, and is used to calculate the instantaneous flow rate and the cumulative flow rate when the water flows through. Preferably, the flow meter 306 can adopt a turbine flow meter, which can accurately calculate the instantaneous flow rate and the cumulative flow rate under the condition of small flow rate. The pressure transmitter 307 is arranged on the liquid pipeline between the flow meter 306 and the inlet end 101, and is used to monitor the device pressure when the water flows through. Among them, a self-locking tee is installed on the liquid pipeline between the flow meter 306 and the pressure transmitter 307, and a gas pipe self-locking interface can be installed on one end of the self-locking tee for connecting the above-mentioned air washing module 200.

[0046] In another embodiment, the water washing module 300 also includes a pressure relief pipeline, one end of which is connected to the liquid pipeline between the boosting pump 302 and the second regulating valve 303, and the other end is arranged at the top opening. A fourth regulating valve 308 is arranged on the pressure relief pipeline for relieving pressure and adjusting the reflux flow.

[0047] Combination Figure 1 and Figure 3 The detection component 400 shown can be a pressure gauge, which is arranged on the return pipe. One end of the return pipe is connected to the clean water outlet end 102, and the other end is arranged at the top opening of the water tank 301. A fifth regulating valve 401 is also arranged on the return pipe for adjusting the water outlet flow rate of the membrane filament assembly 100.

[0048] In an application scenario, the device for detecting the cleaning effect of ultrafiltration membrane filaments of the utility model can be connected to a controller to realize automatic operation of the device and automatically calculate the membrane flux data through a pressure gauge. When it is necessary to detect the membrane flux of the blocked ultrafiltration membrane filaments and perform a water washing operation, the blocked ultrafiltration membrane filaments are placed in the membrane filament assembly 100, the power of the device is turned on, and the booster pump 302 is started. Then the water washing module performs a water washing operation on the blocked ultrafiltration membrane filaments placed in the membrane filament assembly 100. After the running time is over, the device automatically stops running, and the touch screen displays the membrane flux data of the blocked ultrafiltration membrane filaments.

[0049] In the exemplary actual operation, first use Figure 3 The device shown in the figure tests the clean ultrafiltration membrane wire, takes the clean ultrafiltration membrane wire with a diameter of 1.25 mm, and makes a sample according to the making method of the membrane wire assembly 100. After the making is completed, the effective length of the ultrafiltration membrane wire is measured to be 12.4 m, and the membrane wire assembly 100 is connected to Figure 3The device shown. Turn on the power of the device, enter the ultrafiltration membrane wire diameter and ultrafiltration membrane wire length on the touch screen, then enter the operating time 300s, start the device, at this time, the booster pump 302 is automatically turned on, so that the water washing module 300 performs a water washing operation on the membrane wire assembly 100. During operation, the maximum pressure monitored by the pressure transmitter 307 is 0.12MPa, and the instantaneous flow rate calculated by the flowmeter 306 is between 3.1-4.2L / h. After the timing ends, the device stops automatically, and the touch screen displays the following data: membrane flux 77.9L / (m 2 ·h), the cumulative flow rate is 0.316L.

[0050] Next, the diameter of the sample of the fouled ultrafiltration membrane wire was 1.25 mm, and the sample was made according to the method for making the membrane wire assembly 100. After the production was completed, the effective length of the ultrafiltration membrane wire was measured to be 13.2 m, the clean ultrafiltration membrane wire sample was disassembled, and then the membrane wire assembly 100 of the fouled ultrafiltration membrane wire sample was connected to the Figure 3 The device shown. Turn on the power of the device, enter the diameter and length of the blocked ultrafiltration membrane wire on the touch screen, then enter the running time 300s, start the device, at this time, the booster pump 302 is automatically turned on, so that the water washing module 300 performs a water washing operation on it. During the operation, the maximum pressure monitored by the pressure transmitter 307 is 0.21MPa, and the instantaneous flow rate calculated by the flow meter 306 is between 1.2-1.9L / h. After the timing ends, the device stops automatically, and the touch screen displays the following data: membrane flux 22.7L / (m 2 h), the cumulative flow rate is 0.098 L. Compared with the clean ultrafiltration membrane, the membrane flux decreased by 70.90%.

[0051] After performing the above-mentioned test of the membrane flux of the fouled ultrafiltration membrane filaments, the fouled ultrafiltration membrane filaments can be cleaned with a cleaning agent. After the cleaning agent is prepared according to the recommended ratio, it is added to the water tank 301, and the device power is turned on. The touch screen displays the recommended gas flow rate of 51.8L / h, and then the running time of 600s is entered, the device is started, and the first regulating valve 202 is adjusted at the same time to adjust the gas flow rate to about the recommended flow rate of 51.8L / h. At this time, the air compressor 201 and the booster pump 302 are automatically turned on, and the air washing module 200 and the water washing module 300 simultaneously perform air washing and water washing operations on the fouled ultrafiltration membrane filaments in the membrane filament assembly 100 (the air washing module 200 and the water washing module 300 can be pre-mixed before work). During operation, the maximum pressure monitored by the pressure transmitter 307 is 0.23 MPa, and the instantaneous flow rate calculated by the flow meter 306 is between 1.0-3.9 L / h. After the timing ends, the device stops automatically, and the touch screen displays the membrane flux of 39.2 L / (m 2 ·h), the cumulative flow rate is 0.338L.

[0052] Finally, the cleaning agent is drained from the water tank 301, and then clean the water tank 301 and inject clean water. Close the first regulating valve 202, turn on the power of the device, enter the operating time 300s, start the device, and make the water washing module 300 perform water washing operation on it. During operation, the maximum pressure monitored by the pressure transmitter 307 is 0.12MPa, and the instantaneous flow rate calculated by the flow meter 306 is between 3.1-4.1L / h. After the timing ends, the device stops automatically, and the touch screen displays the data of membrane flux 75.6L / (m 2 h), the cumulative flow rate was 0.307 L, and the membrane flux was calculated to be restored to 97.05% of the value before clogging.

[0053] Through the above description, the device of the utility model adds a gas washing operation, so that the device simulates the actual chemical cleaning process of the ultrafiltration system as much as possible, so that the cleaning effect during the test is closer to the actual cleaning scene, and the credibility of the results is improved. In addition, the utility model can realize the automatic calculation of membrane flux and recommended gas flow through the controller, and can also realize time control, automatic start and stop, overpressure protection, etc., with a high degree of automation and intelligence; the utility model also describes in detail the production process of the membrane wire assembly 100, which is not only fast, simple and low-cost to produce, but also suitable for the sample production needs of various ultrafiltration membrane wire tests.

[0054] Although multiple embodiments of the utility model have been shown and described herein, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications and alternatives without departing from the idea and spirit of the utility model. It should be understood that in the process of practicing the utility model, various alternatives to the embodiments of the utility model described herein may be adopted. The attached claims are intended to define the scope of protection of the utility model, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A device for detecting the cleaning effect of ultrafiltration membrane fibers, characterized in that: include: A membrane fiber assembly (100), comprising an inlet end (101) and a clean water outlet end (102), and having built-in ultrafiltration membrane fibers for filtering clean water; An air washing module (200), connected to the inlet end (101), and used for performing an air washing operation on the membrane fiber assembly (100); A water washing module (300), which is also connected to the inlet end (101) and is used to perform a water washing operation on the membrane fiber assembly (100); as well as The detection component (400) is arranged and connected to the clean water outlet end (102) and is used to detect the membrane flux of the ultrafiltration membrane filaments after cleaning so as to determine the cleaning effect of the ultrafiltration membrane filaments.

2. The device according to claim 1, characterized in that The air washing module (200) comprises: An air compressor (201) connected to the inlet end (101) of the membrane fiber assembly through an air pipeline; The first regulating valve (202) is arranged on the air pipeline and is used to adjust the air supply flow rate.

3. The device according to claim 2, characterized in that The air washing module (200) further comprises: A gas float flowmeter (203) is arranged on the air pipeline between the first regulating valve (202) and the inlet end (101) and is used to monitor the gas supply flow rate.

4. The device according to claim 1, characterized in that The water washing module (300) comprises: A water tank (301) having a top opening and a bottom opening for containing clean water or a cleaning agent, wherein the bottom opening is connected to the inlet end (101) of the membrane fiber assembly via a liquid pipeline; A booster pump (302), which is arranged on the liquid pipeline and is used to supply water and boost pressure to the device for testing the cleaning effect of the membrane fiber assembly; The second regulating valve (303) is arranged on the liquid pipeline between the booster pump (302) and the inlet end (101) of the membrane fiber assembly, and is used to adjust the water supply flow rate.

5. The device according to claim 4, characterized in that The water washing module (300) further comprises: A filter (304), which is arranged on the liquid pipeline between the second regulating valve (303) and the inlet end (101), and is used to filter impurities in water or mixed liquid; The third regulating valve (305) is arranged on the liquid pipeline between the filter (304) and the inlet end (101), and is used to disconnect the water path when the filter element of the filter (304) is replaced.

6. The device according to claim 5, characterized in that The water washing module (300) further comprises: A flow meter (306) is provided on the liquid pipeline between the third regulating valve (305) and the inlet end (101) and is used to calculate the instantaneous flow rate and the accumulated flow rate of water when it passes through; a pressure transmitter (307), which is disposed on the liquid pipeline between the flow meter (306) and the inlet end (101), and is used to monitor the pressure of the device when water flows through; Wherein, a self-locking tee is installed on the liquid pipeline between the flow meter (306) and the pressure transmitter (307).

7. The device according to claim 6, characterized in that The water washing module (300) further comprises: A pressure relief pipeline, one end of which is connected to the liquid pipeline between the booster pump (302) and the second regulating valve (303), and the other end of which is arranged at the top opening. A fourth regulating valve (308) is arranged on the pressure relief pipeline for relieving pressure and regulating the reflux flow.

8. The device according to claim 4, characterized in that The detection component (400) is a pressure gauge, which is arranged on the return pipeline. One end of the return pipeline is connected to the clean water outlet end (102), and the other end is arranged at the top opening of the water tank. A fifth regulating valve (401) is also arranged on the return pipeline for adjusting the water outlet flow of the membrane filament assembly (100).

9. The device according to claim 6, characterized in that The air washing module (200) comprises: An air compressor (201) connected to the inlet end (101) of the membrane fiber assembly through an air pipeline; A first regulating valve (202), which is arranged on the air pipeline and is used to adjust the air supply flow; One end of the self-locking tee is connected to the air pipeline so as to perform air washing and water washing operations on the ultrafiltration membrane wire at the same time.

10. The device according to claim 1, characterized in that The membrane filament assembly (100) comprises: The concentrated water outlet (106) is used to discharge wastewater generated by the membrane fiber assembly (100) during the test process. The concentrated water outlet (106) is arranged on the concentrated water pipeline. The concentrated water pipeline is provided with a sixth regulating valve (107) for adjusting the concentrated water flow rate.

Images