Hollow fiber membrane silk flux testing device

Abstract

The invention belongs to the technical field of hollow fiber membrane flux testing, and particularly relates to a hollow fiber membrane silk flux testing device which comprises a base, a testing frame, a purification rate detection mechanism and a pressure difference prevention type pulse spraying mechanism. The testing frame is arranged on the upper wall of the base, and the purification rate detection mechanism is arranged on the testing frame; the pressure difference prevention type pulse spraying mechanism is arranged on the purification rate detection mechanism, and the purification rate detection mechanism comprises a film fixing mechanism, a liquid pressing mechanism and a value measuring mechanism. The invention provides the hollow fiber membrane wire flux testing device capable of testing the continuous sewage filtering effect of the hollow fiber membrane under the condition of not changing the sewage suction pressure difference of the hollow fiber membrane.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow fiber membrane flux testing, and specifically refers to a hollow fiber membrane flux testing device. Background Art

[0002] Hollow fiber membrane is a self-supporting membrane with a fibrous shape. It is widely used in the field of water treatment due to its advantages such as good filtration performance, high selectivity, small footprint and low cost.

[0003] The existing hollow fiber membrane flux test device has the following problems: When testing the effect of the hollow fiber membrane on adsorbing sewage, the existing hollow fiber membrane flux testing device is unable to remove particulate impurities contained in the sewage, resulting in a certain amount of particulate impurities adhering to the surface of the hollow fiber membrane when sucking sewage, which easily clogs the hollow fiber membrane, thereby affecting the hollow fiber membrane's purification efficiency for salt and heavy metal ions in sewage. In addition, the traditional hollow fiber membrane flux testing device does not have the ability to test the continuous filtration performance of sewage without interfering with the suction pressure difference of the hollow fiber membrane. Therefore, it cannot meet the existing use requirements of the hollow fiber membrane flux testing device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a hollow fiber membrane flux testing device that can continuously test the filtration effect of the hollow fiber membrane on sewage without changing the pressure difference of the hollow fiber membrane sucking sewage.

[0005] The technical scheme adopted in this scheme is as follows: A hollow fiber membrane flux testing device proposed in this scheme includes a base, a test frame, a purification rate detection mechanism and an anti-pressure differential pulse spray mechanism. The test frame is arranged on the upper wall of the base, the purification rate detection mechanism includes a solid film mechanism, a liquid pressure mechanism and a measuring mechanism, the solid film mechanism is arranged inside the test frame, the liquid pressure mechanism is arranged on the side wall of the test frame, and the measuring mechanism is arranged on the side wall of the liquid pressure mechanism. The anti-pressure differential pulse spray mechanism includes a steering mechanism and an impurity removal mechanism. The steering mechanism is arranged on the side of the solid film mechanism close to the base, and the impurity removal mechanism is arranged on the upper wall of the test frame.

[0006] As a further preferred embodiment of the present invention, the solid membrane mechanism includes a liquid guiding tube, a water injection net tube and a hollow fiber membrane body, the liquid guiding tube is penetrated through the upper inner wall of the test frame, the liquid guiding tube is threadedly connected to the test frame, the water injection net tube is communicated with the bottom wall of the liquid guiding tube, the water injection net tube is threadedly connected to the liquid guiding tube, and the hollow fiber membrane body is communicated between the bottom wall of the liquid guiding tube and the bottom inner wall of the water injection net tube; the liquid pressure mechanism includes a detection tube, a sliding pressure plate, a sliding magnet, an annular electromagnet, a water injection ring tube, a suction metal hose and a control valve, the detection tube is arranged on the side wall of the test frame, the sliding pressure plate is slidably arranged on the inner wall of the detection tube, the sliding magnets are respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, and the annular electromagnets are respectively arranged on the upper wall and the bottom wall of the detection tube The sliding magnet is arranged opposite to the annular electromagnet, the control valve is connected to the bottom wall of the detection cylinder, the water injection ring pipe is connected to the side of the control valve away from the detection cylinder, and the suction metal hose is connected between the upper wall of the detection cylinder and the upper wall of the liquid guide cylinder; the measuring mechanism includes a salinity online analyzer, a salinity analysis sensing end, a heavy metal analyzer and a heavy metal analysis sensing end, the salinity online analyzer and the heavy metal analyzer are respectively arranged on the side of the detection cylinder away from the test frame, the salinity analysis sensing end is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, the heavy metal analysis sensing end is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, the salinity analysis sensing end is electrically connected to the salinity online analyzer, and the heavy metal analyzer is electrically connected to the heavy metal analysis sensing end.

[0007] When in use, pull out the suction metal hose from the upper wall of the liquid guiding cylinder, rotate the liquid guiding cylinder, and the liquid guiding cylinder rotates along the inner wall of the test frame to drive the water injection net cylinder to be pulled out from the inside of the test frame, rotate the liquid guiding cylinder, separate the liquid guiding cylinder from the water injection net cylinder, place the hollow fiber membrane body to be tested inside the water injection net cylinder, and connect the end of the hollow fiber membrane body away from the water injection net cylinder with the liquid guiding cylinder, screw the liquid guiding cylinder into one side of the water injection net cylinder, and the liquid guiding cylinder drives the water injection net cylinder to be inserted into the inside of the test frame. The liquid guiding cylinder is screwed into the inner wall of the test frame, and the hollow fiber membrane body is fixed inside the test frame, and the annular electromagnet is energized Magnetism is generated, the annular electromagnet on the upper wall of the detection tube and the sliding magnet on the upper wall of the sliding pressure plate are arranged with opposite poles, and the annular electromagnet on the bottom wall of the detection tube and the sliding magnet on the bottom wall of the sliding pressure plate are arranged with the same pole. Under the action of the magnetic fields of the annular electromagnet and the sliding magnet with the same pole and the magnetic fields of the opposite poles, the sliding pressure plate slides and rises along the detection tube. At this time, the space on the upper part of the detection tube is smaller than the space on the lower part of the detection tube, and sewage is injected into the detection tube below the sliding pressure plate. The salinity analysis sensing end and the heavy metal analysis sensing end arranged below the sliding pressure plate detect the pollutant index in the sewage and record the detection data.

[0008] Preferably, the steering mechanism includes a steering groove, a filter cartridge, a filter screen, a steering rod and a semi-cylinder, the steering groove is arranged between the base and the test frame, the steering groove is arranged through, the steering rod is rotatably arranged inside the steering groove, the filter cartridge is arranged on the upper wall of the steering rod outside the water injection net cartridge, the filter cartridge is arranged with an upper opening, the side of the water injection net cartridge away from the liquid guide cartridge is in contact with the inner wall of the bottom of the filter cartridge, the filter screen is symmetrically arranged on both sides of the filter cartridge, the semi-cylinder is arranged on the inner wall of the test frame away from the detection cartridge, the end of the semi-cylinder away from the inner wall of the test frame is rotatably connected to the filter cartridge, the filter cartridge rotates along the inner wall of the semi-cylinder, and the end of the water injection ring tube away from the control valve is connected to the semi-cylinder; the impurity removal mechanism includes It includes a pulse generator, an annular pulse cylinder, a pulse tube, a pulse strip arc box, a pulse port and a debris collecting plate, wherein the pulse generator is arranged on the upper wall of the test frame, the annular pulse cylinder is arranged on the top inner wall of the test frame outside the liquid guiding cylinder, the filter cylinder is rotated on the side away from the steering rod and arranged on the bottom wall of the annular pulse cylinder outside the water injection net cylinder, the pulse tube is connected between the annular pulse cylinder and the power end of the pulse generator, the pulse strip arc box is connected to the bottom wall of the annular pulse cylinder between the filter cylinder and the water injection net cylinder, multiple groups of pulse ports are arranged on the side of the pulse strip arc box away from the water injection net cylinder, the pulse strip arc box fills the gap between the filter cylinder and the water injection net cylinder, and the debris collecting plate is arranged on the bottom wall of the test frame below the filter cylinder.

[0009] When in use, in the initial state, the filter screen on one side of the filter cartridge is arranged opposite to the semi-cylinder, and the filter screen on the other side of the filter cartridge is fitted with the annular pulse cylinder, and the sewage inside the water injection ring pipe enters the semi-cylinder, and the sewage inside the semi-cylinder is filtered by the filter screen and enters the water injection net cylinder and contacts the hollow fiber membrane body. The sliding pressure plate extracts the sewage inside the water injection net cylinder during the descending process, and the sewage after impurities inside the water injection net cylinder is filtered by the hollow fiber membrane body and enters the liquid guide cylinder. The filtered sewage inside the liquid guide cylinder flows into the detection cylinder through the suction metal hose, and the sewage filtered by the hollow fiber membrane body falls into the detection cylinder above the sliding pressure plate. When the sliding pressure plate descends to the bottom of the detection cylinder, the sewage inside the water injection net cylinder is all sucked into the detection cylinder above the sliding pressure plate, and the salinity online analyzer and the heavy metal analyzer detect the pollutant index inside the purified sewage through the salinity analysis sensing end and the heavy metal analysis sensing end above the sliding pressure plate.

[0010] Specifically, a controller is provided on the side wall of the detection cylinder.

[0011] Wherein, the controller is electrically connected to the annular electromagnet, the salinity online analyzer, the heavy metal analyzer and the pulse generator respectively.

[0012] Preferably, the model of the controller is SYC89C52RC-401.

[0013] The beneficial effects achieved by adopting the above structure are as follows: Compared with the prior art, the present invention adopts a method of combining a blowing structure with a filtering structure. By setting up a purification rate detection mechanism and a pressure difference-proof pulse spray mechanism, under the coordinated use of a solid membrane mechanism, a liquid pressure mechanism, a measuring mechanism, a steering mechanism and an impurity removal mechanism, the ability of the hollow fiber membrane body to continuously filter sewage can be tested without changing the condition of the hollow fiber membrane body's adsorption pressure difference. Under the blocking and blowing action of the pulse strip arc box, the newly charged sewage is isolated from contacting the filter screen after the impurity removal operation, thereby reducing the probability of the hollow fiber membrane body adsorbing sewage containing particulate impurities and avoiding particulate impurities from adhering to the surface of the hollow fiber membrane body, thereby ensuring the adsorption effect of the hollow fiber membrane body on salt and heavy metal ions in sewage, thereby accurately The purification index of the hollow fiber membrane body for salt and heavy metal ions in sewage is tested, the steering rod drives the filter screen that filters sewage containing impurities to rotate and fit with the pulse strip arc box, the new filter screen rotates and is set relative to the semi-cylinder to discharge the sewage inside the detection cylinder, the annular electromagnet is energized to generate magnetism, and the sliding pressure plate rises to the top of the detection cylinder under the action of the magnetic field of the annular electromagnet, and the untreated sewage is filled into the detection cylinder under the sliding pressure plate to test the continuous filtering effect of the hollow fiber membrane body, the pulse wave generated by the pulse generator enters the pulse tube through the annular pulse tube, and the pulse wave inside the pulse tube passes through the pulse strip arc box and the pulse port to the filter screen that absorbs impurities, and the impurities on the adsorption surface of the filter screen are sprayed into the collecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this scheme; Figure 2 This is a bottom-up stereogram of the scheme; Figure 3 This is a schematic diagram of the internal structure of this scheme; Figure 4 This is a schematic diagram of the internal structure of the steering mechanism of this scheme; Figure 5 This is a schematic diagram of the external structure of the steering mechanism of this scheme; Figure 6 This is a schematic diagram of the combined structure of the semi-cylinder and the water injection ring pipe of this scheme; Figure 7 This is the main view of this scheme; Figure 8 This is a side view of the scheme; Fig. 9 This is a top view of the scheme; Fig.10 for Figure 7 AA section view of the part; Fig.11 for Figure 8A cross-sectional view of the BB portion; Fig.12 for Figure 3 A magnified structural view of part I; Fig.13 for Fig.10 The enlarged structural view of part II; Fig.14 for Figure 3 A magnified structural view of part III; Fig.15 for Fig.11 Enlarged structural view of part IV.

[0015] Among them, 1. base, 2. test stand, 3. purification rate detection mechanism, 4. solid film mechanism, 5. liquid guide cylinder, 6. water injection net cylinder, 7. hollow fiber membrane body, 8. liquid pressure mechanism, 9. detection cylinder, 10. sliding pressure plate, 11. sliding magnet, 12. annular electromagnet, 13. water injection ring pipe, 14. suction metal hose, 15. measurement mechanism, 16. salinity online analyzer, 17. salinity analysis sensing end, 18. heavy metal analyzer, 19. heavy metal analysis sensing end, 20. anti-pressure differential type pulse spray mechanism, 21. steering mechanism, 22. steering trough, 23. filter cylinder, 24. filter net, 25. steering rod, 26. semi-cylinder, 27. impurity removal mechanism, 28. pulse generator, 29. annular pulse cylinder, 30. pulse tube, 31. pulse strip arc box, 32. pulse port, 33. impurity collecting plate, 34. controller, 35. control valve.

[0016] The accompanying drawings are used to provide further understanding of the present scheme and constitute a part of the specification. Together with the embodiments of the present scheme, they are used to explain the present scheme and do not constitute a limitation on the present scheme. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the present scheme will be clearly and completely described below in conjunction with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are only part of the embodiments of the present scheme, not all of the embodiments; based on the embodiments in the present scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present scheme.

[0018] In the description of this scheme, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this scheme.

[0019] like Figure 1-Figure 15 As shown, the technical scheme adopted in this scheme is as follows: A hollow fiber membrane flux testing device proposed in this scheme includes a base 1, a test frame 2, a purification rate detection mechanism 3 and a pressure difference proof pulse spray mechanism 20, the test frame 2 is arranged on the upper wall of the base 1, the purification rate detection mechanism 3 includes a solid film mechanism 4, a liquid pressure mechanism 8 and a measuring mechanism 15, the solid film mechanism 4 is arranged inside the test frame 2, the liquid pressure mechanism 8 is arranged on the side wall of the test frame 2, the measuring mechanism 15 is arranged on the side wall of the liquid pressure mechanism 8, the pressure difference proof pulse spray mechanism 20 includes a steering mechanism 21 and a de-impurity mechanism 27, the steering mechanism 21 is arranged on the side of the solid film mechanism 4 close to the base 1, and the de-impurity mechanism 27 is arranged on the upper wall of the test frame 2.

[0020] The solid membrane mechanism 4 includes a liquid guide tube 5, a water injection net tube 6 and a hollow fiber membrane body 7. The liquid guide tube 5 is penetrated and arranged on the upper inner wall of the test frame 2. The liquid guide tube 5 is threadedly connected to the test frame 2. The water injection net tube 6 is connected to the bottom wall of the liquid guide tube 5. The water injection net tube 6 is threadedly connected to the liquid guide tube 5. The hollow fiber membrane body 7 is connected between the bottom wall of the liquid guide tube 5 and the bottom inner wall of the water injection net tube 6; the liquid pressure mechanism 8 includes a detection tube 9, a sliding pressure plate 10, a sliding magnet 11, an annular electromagnet 12, a water injection ring pipe 13, a suction metal hose 14 and a control valve 35. The detection tube 9 is arranged on the side wall of the test frame 2, the sliding pressure plate 10 is slidably arranged on the inner wall of the detection tube 9, the sliding magnet 11 is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate 10, the annular electromagnet 12 is respectively arranged on the upper wall and the bottom wall of the detection tube 9, and the sliding magnet 11 and the annular electromagnet 12 are respectively arranged on the upper wall and the bottom wall of the detection tube 9. The electromagnets 12 are arranged relatively to each other, the control valve 35 is connected to the bottom wall of the detection tube 9, the water injection ring pipe 13 is connected to the side of the control valve 35 away from the detection tube 9, and the suction metal hose 14 is connected between the upper wall of the detection tube 9 and the upper wall of the liquid guide tube 5; the measuring mechanism 15 includes a salinity online analyzer 16, a salinity analysis sensing end 17, a heavy metal analyzer 18 and a heavy metal analysis sensing end 19, the salinity online analyzer 16 and the heavy metal analyzer 18 are respectively arranged on the side of the detection tube 9 away from the test frame 2, the salinity analysis sensing end 17 is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate 10, the heavy metal analysis sensing end 19 is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate 10, the salinity analysis sensing end 17 is electrically connected to the salinity online analyzer 16, and the heavy metal analyzer 18 is electrically connected to the heavy metal analysis sensing end 19.

[0021] The steering mechanism 21 includes a steering groove 22, a filter cylinder 23, a filter screen 24, a steering rod 25 and a semi-cylinder 26. The steering groove 22 is arranged between the base 1 and the test frame 2, and the steering groove 22 is a through arrangement. The steering rod 25 is rotatably arranged inside the steering groove 22. The filter cylinder 23 is arranged on the upper wall of the steering rod 25 outside the water injection net cylinder 6. The filter cylinder 23 is arranged with an upper opening. The side of the water injection net cylinder 6 away from the liquid guide cylinder 5 is in contact with the inner wall of the bottom of the filter cylinder 23. The filter screen 24 is symmetrically arranged on both sides of the filter cylinder 23. The semi-cylinder 26 is arranged on the inner wall of the end of the test frame 2 away from the detection cylinder 9. The end of the semi-cylinder 26 away from the inner wall of the test frame 2 is rotatably connected to the filter cylinder 23. The filter cylinder 23 rotates along the inner wall of the semi-cylinder 26. The end of the water injection ring pipe 13 away from the control valve 35 is connected to the semi-cylinder 26. The impurity removal mechanism 27 includes It includes a pulse generator 28, an annular pulse cylinder 29, a pulse tube 30, a pulse strip arc box 31, a pulse port 32 and a debris collecting plate 33, wherein the pulse generator 28 is arranged on the upper wall of the test frame 2, the annular pulse cylinder 29 is arranged on the top inner wall of the test frame 2 outside the liquid guide cylinder 5, the filter cylinder 23 is rotated on the side away from the steering rod 25 to be arranged on the bottom wall of the annular pulse cylinder 29 outside the water injection net cylinder 6, the pulse tube 30 is connected between the annular pulse cylinder 29 and the power end of the pulse generator 28, the pulse strip arc box 31 is connected to the bottom wall of the annular pulse cylinder 29 between the filter cylinder 23 and the water injection net cylinder 6, multiple groups of the pulse ports 32 are arranged on the side of the pulse strip arc box 31 away from the water injection net cylinder 6, the pulse strip arc box 31 fills the gap between the filter cylinder 23 and the water injection net cylinder 6, and the debris collecting plate 33 is arranged on the bottom wall of the test frame 2 below the filter cylinder 23.

[0022] A controller 34 is disposed on the side wall of the detection cylinder 9 .

[0023] The controller 34 is electrically connected to the annular electromagnet 12 , the salinity online analyzer 16 , the heavy metal analyzer 18 , and the pulse generator 28 , respectively.

[0024] The model of the controller 34 is SYC89C52RC-401.

[0025] When in use, in the initial state, the filter screen 24 on one side of the filter cartridge 23 is located inside the semi-cylinder 26, which is a cavity with an opening at one end. The inner diameter of the filter cartridge 23 is consistent with the outer diameter of the annular pulse cartridge 29, and the inner wall of the filter cartridge 23 and the side wall of the annular pulse cartridge 29 fit each other. A sealing strip is provided at the part where the annular pulse cartridge 29 and the filter cartridge 23 fit together. The filter screen 24 on one side of the filter cartridge 23 close to the annular pulse cartridge 29 is arranged opposite to the pulse port 32, so that one side of the filter cartridge 23 is connected to the semi-cylinder 26, and the other side of the filter cartridge 23 is connected to the annular pulse cartridge 29. The suction metal hose 14 and the liquid guide tube 5 are plug-in settings, the suction metal hose 14 is pulled out from the upper wall of the liquid guide tube 5, the liquid guide tube 5 is manually rotated, the liquid guide tube 5 is rotated out of the inner wall of the test frame 2, the liquid guide tube 5 drives the water injection net tube 6 to be pulled out from the inside of the filter tube 23, the liquid guide tube 5 is rotated, the liquid guide tube 5 is separated from the water injection net tube 6, the side of the liquid guide tube 5 close to the water injection net tube 6 is opened, the water injection net tube 6 is through-set, the hollow fiber membrane body 7 is cast between the connectors by epoxy resin, the connector at one end of the hollow fiber membrane body 7 is screwed into the inner wall of the liquid guide tube 5, the connector at one end of the hollow fiber membrane body 7 close to the liquid guide tube 5 is connected with the hollow fiber membrane body 7, the water injection net tube 6 is inserted into the outer side of the hollow fiber membrane body 7, the connector at the other end of the hollow fiber membrane body 7 is screwed into the inner wall of the end of the water injection net tube 6 away from the liquid guide tube 5, and the connector at one end of the hollow fiber membrane body 7 close to the water injection net tube 6 is sealed; The hollow fiber membrane body 7 to be tested is placed inside the water injection net cylinder 6. The liquid guide cylinder 5 drives the water injection net cylinder 6 to penetrate the test frame 2 and insert into the filter cylinder 23. The liquid guide cylinder 5 is screwed into the inner wall of the test frame 2. The hollow fiber membrane body 7 is fixed inside the filter cylinder 23. The controller 34 controls the annular electromagnet 12 to start, and the annular electromagnet 12 generates magnetism when it is energized. The annular electromagnet 12 on the upper wall of the detection tube 9 and the sliding magnet 11 on the upper wall of the sliding pressure plate 10 are arranged with different poles, and the annular electromagnet 12 on the bottom wall of the detection tube 9 and the sliding magnet 11 on the bottom wall of the sliding pressure plate 10 are arranged with the same poles. Under the action of the magnetic fields of the same pole and the magnetic fields of the opposite poles of the annular electromagnet 12 and the sliding magnet 11, the sliding pressure plate 10 slides and rises along the detection tube 9. The space above the detection tube 9 is smaller than the space below the detection tube 9, and the sliding pressure plate 10 moves downward to the detection tube 9. Sewage is injected into the detection cylinder 9, and the gas in the upper space of the detection cylinder 9 enters the liquid guide cylinder 5 through the suction metal hose 14, and the air in the liquid guide cylinder 5 enters the hollow fiber membrane body 7 through the connector, so that the air is discharged through the hollow fiber membrane body 7, reducing the amount of pollutants attached to the surface of the hollow fiber membrane body 7, avoiding the pollutants from being drawn into the hollow fiber membrane body 7 when the hollow fiber membrane body 7 is extracting sewage, affecting its filtration efficiency of sewage, and further affecting the test results of the hollow fiber membrane body 7; The controller 34 controls the start-up of the salinity online analyzer 16 and the heavy metal analyzer 18. The salinity online analyzer 16 and the heavy metal analyzer 18 detect the pollutant index in the sewage through the salinity analysis sensing end 17 and the heavy metal analysis sensing end 19 arranged below the sliding pressure plate 10, and record the detected data. Subsequently, the controller 34 controls the annular electromagnets 12 on the upper wall and the bottom wall of the detection tube 9 to change the magnetic poles. The annular electromagnets 12 on the upper wall of the detection tube 9 and the sliding magnets 11 on the upper wall of the sliding pressure plate 10 are arranged at opposite poles. The annular electromagnets 12 on the bottom wall of the detection tube 9 and the sliding magnets 11 on the bottom wall of the sliding pressure plate 10 are arranged at opposite poles. The sliding pressure plate 10 slides down along the inner wall of the detection tube 9. The control valve 35 is opened, the water injection ring pipe 13 is connected with the detection cylinder 9, and the sewage in the detection cylinder 9 flows into the water injection ring pipe 13 through the control valve 35. The sewage in the water injection ring pipe 13 enters the interior of the semi-cylinder 26. A sealing strip is provided at the part where the semi-cylinder 26 and the filter cylinder 23 are connected. The sewage in the semi-cylinder 26 enters the water injection net cylinder 6 after being filtered by the filter net 24 and contacts the hollow fiber membrane body 7. The sliding pressure plate 10 moves the sewage in the water injection net cylinder 6 during the descending process. The water is extracted, and the sewage after impurities removal in the water injection net cylinder 6 enters the liquid guide cylinder 5 after being filtered by the hollow fiber membrane body 7. The sewage in the liquid guide cylinder 5 flows into the detection cylinder 9 through the suction metal hose 14. The sewage filtered by the hollow fiber membrane body 7 falls into the detection cylinder 9 above the sliding pressure plate 10. When the sliding pressure plate 10 drops to the bottom of the detection cylinder 9, all the sewage in the water injection net cylinder 6 is sucked into the detection cylinder 9 above the sliding pressure plate 10. The controller 34 controls the salinity online analyzer 16 and the heavy metal analyzer 18 to start, and the salinity online analyzer 16 and the heavy metal analyzer 18 detect the pollutant index inside the purified sewage through the salinity analysis sensing end 17 and the heavy metal analysis sensing end 19 on the upper wall of the sliding pressure plate 10. When the sewage pollutant index inside the detection cylinder 9 above the sliding pressure plate 10 meets the user's requirements, the test result of the sewage purification by the hollow fiber membrane body 7 passes; When the continuous filtering effect of the hollow fiber membrane body 7 needs to be tested, in order to prevent the filter screen 24 that absorbs impurities from changing the suction pressure of the hollow fiber membrane body 7, a drain valve is pre-set at the bottom of 9, the drain valve is opened, and the sewage inside the detection cylinder 9 is discharged, and then the drain valve is closed, and the steering rod 25 is manually rotated. The steering rod 25 drives the filter screen 24 containing impurities after filtering the sewage to rotate and fit with the pulse strip arc box 31, and the new filter screen 24 rotates and is set relative to the semi-cylinder 26; The controller 34 controls the annular electromagnet 12 to start, and the annular electromagnet 12 is energized to generate magnetism. The sliding plate 10 rises to the top of the detection cylinder 9 under the force of the magnetic field of the annular electromagnet 12, and the untreated sewage is filled into the detection cylinder 9 below the sliding plate 10 to test the continuous filtering effect of the hollow fiber membrane body 7; The controller 34 controls the pulse generator 28 to start. The pulse wave generated by the pulse generator 28 enters the interior of the pulse tube 30 through the annular pulse cylinder 29. The pulse wave inside the pulse tube 30 passes through the pulse strip arc box 31 and the pulse port 32 to spray toward the filter screen 24 that adsorbs impurities. The impurities on the adsorption surface of the filter screen 24 are sprayed into the collecting plate 33, and the filter screen 24 is automatically cleaned, so that the filter screen 24 can be used without affecting the adsorption pressure difference of the hollow fiber membrane body 7. Repeat the above operation when using it next time.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] The above is a description of the present solution and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the creative purpose of the present solution, they should all fall within the protection scope of the present solution.

Claims

1. A hollow fiber membrane flux testing device, comprising a base and a testing frame, wherein the testing frame is arranged on the upper wall of the base, characterized in that: It also includes a purification rate detection mechanism and a pressure difference-proof pulse jet mechanism; The purification rate detection mechanism includes a solid film mechanism, a liquid pressing mechanism and a value measuring mechanism; The film-fixing mechanism is arranged inside the test frame, the liquid-pressing mechanism is arranged on the side wall of the test frame, and the value-measuring mechanism is arranged on the side wall of the liquid-pressing mechanism; The anti-pressure differential type pulse jet mechanism includes a steering mechanism and a debris removal mechanism; The steering mechanism is arranged on a side of the film-fixing mechanism close to the base, and the impurity removal mechanism is arranged on the upper wall of the test frame; The film-fixing mechanism comprises a liquid-conducting cylinder and a water-injecting mesh cylinder; The liquid-conducting cylinder is arranged through the inner wall of the upper part of the test frame, and the water-injecting net cylinder is arranged in communication with the bottom wall of the liquid-conducting cylinder; The liquid pressing mechanism comprises a detection cylinder and a sliding pressing plate; The detection cylinder is arranged on the side wall of the test frame, and the sliding pressure plate is slidably arranged on the inner wall of the detection cylinder; The steering mechanism comprises a steering groove, a steering rod, a filter cylinder, a filter screen and a semi-cylinder; The steering groove is arranged between the base and the test frame, the steering rod is rotatably arranged inside the steering groove, the filter cylinder is arranged on the upper wall of the steering rod outside the water injection net cylinder, the filter net is symmetrically arranged on both sides of the filter cylinder, and the semi-cylinder is arranged on the inner wall of the test frame away from the end of the detection cylinder.

2. A hollow fiber membrane flux testing device according to claim 1, characterized in that: The liquid pressure mechanism also includes a sliding magnet, an annular electromagnet, a water injection ring pipe, a suction metal hose and a control valve. The sliding magnet is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, the annular electromagnet is respectively arranged on the upper wall and the bottom wall of the detection cylinder, the sliding magnet and the annular electromagnet are arranged opposite to each other, the control valve is connected to the bottom wall of the detection cylinder, the water injection ring pipe is connected to the side of the control valve away from the detection cylinder, and the suction metal hose is connected between the upper wall of the detection cylinder and the upper wall of the liquid guide cylinder.

3. A hollow fiber membrane flux testing device according to claim 1, characterized in that: The membrane solidifying mechanism also includes a hollow fiber membrane body. The liquid guide tube is threadedly connected to the test frame, the water injection net tube is threadedly connected to the liquid guide tube, and the hollow fiber membrane body is connected between the bottom wall of the liquid guide tube and the bottom inner wall of the water injection net tube.

4. A hollow fiber membrane flux testing device according to claim 1, characterized in that: The measuring mechanism includes a salinity online analyzer, a salinity analysis sensing end, a heavy metal analyzer and a heavy metal analysis sensing end. The salinity online analyzer and the heavy metal analyzer are respectively arranged on the side of the detection tube away from the test frame, the salinity analysis sensing end is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, the heavy metal analysis sensing end is respectively arranged on the upper wall and the bottom wall of the sliding pressure plate, the salinity analysis sensing end is electrically connected to the salinity online analyzer, and the heavy metal analyzer is electrically connected to the heavy metal analysis sensing end.

5. The hollow fiber membrane flux testing device according to claim 1, characterized in that: The deflection groove is through-set, the filter cylinder is opened at the upper end, and the side of the water injection net cylinder away from the liquid guide cylinder is in contact with the inner wall of the bottom of the filter cylinder.

6. A hollow fiber membrane flux testing device according to claim 5, characterized in that: One end of the semi-cylinder away from the inner wall of the test frame is rotatably connected to the filter cartridge, the filter cartridge rotates along the inner wall of the semi-cylinder, and one end of the water injection ring pipe away from the control valve is connected to the semi-cylinder.

7. A hollow fiber membrane flux testing device according to claim 1, characterized in that: The impurity removal mechanism includes a pulse generator, an annular pulse cylinder, a pulse tube, a pulse strip arc box, a pulse port and an impurity collecting plate. The pulse generator is arranged on the upper wall of the test frame, the annular pulse cylinder is arranged on the top inner wall of the test frame outside the liquid guide cylinder, and the filter cylinder is rotated away from the steering rod on the bottom wall of the annular pulse cylinder outside the water injection net cylinder.

8. A hollow fiber membrane flux testing device according to claim 7, characterized in that: The pulse tube is connected between the annular pulse cylinder and the power end of the pulse generator, the pulse strip arc box is connected to the bottom wall of the annular pulse cylinder between the filter cylinder and the water injection mesh cylinder, multiple groups of pulse ports are arranged on the side of the pulse strip arc box away from the water injection mesh cylinder, the pulse strip arc box fills the gap between the filter cylinder and the water injection mesh cylinder, and the debris collecting plate is arranged on the bottom wall of the test frame below the filter cylinder.

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