A hollow fiber membrane filament flux testing device

Abstract

The present invention belongs to the technical field of hollow fiber membrane flux testing, and specifically refers to a hollow fiber membrane filament flux testing device, which includes a base, a testing frame, a purification rate detection mechanism, and an anti-pressure-difference type pulse jet mechanism. The testing frame is arranged on the upper wall of the base, the purification rate detection mechanism is arranged on the testing frame, the anti-pressure-difference type pulse jet mechanism is arranged on the purification rate detection mechanism, and the purification rate detection mechanism includes a membrane fixing mechanism, a liquid pressing mechanism, and a value measuring mechanism. The present invention provides a hollow fiber membrane filament flux testing device that can test the continuous filtration effect of the hollow fiber membrane on sewage under the condition of not changing the suction sewage pressure difference of the hollow fiber membrane.

Description

Technical Field

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

[0002] A hollow fiber membrane is a membrane with a fibrous shape and self-supporting function. Due to its advantages such as good filtration performance, high selectivity, small floor area, and low cost, it is widely used in the field of water treatment.

[0003] Currently, the existing hollow fiber membrane filament flux testing devices have the following problems:

[0004] When the existing hollow fiber membrane filament flux testing device tests the effect of the hollow fiber membrane adsorbing sewage, it cannot remove particulate impurities contained in the sewage. As a result, when the hollow fiber membrane sucks sewage, a certain amount of particulate impurities will adhere to its surface, easily clogging the hollow fiber membrane, thereby affecting the purification efficiency of the hollow fiber membrane for salts and heavy metal ions in the sewage. Moreover, the traditional hollow fiber membrane filament flux testing device also does not have the ability to test the continuous filtration performance of sewage under the condition of not disturbing the suction pressure difference of the hollow fiber membrane. Therefore, it cannot meet the current usage requirements of the hollow fiber membrane filament flux testing device. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, this solution provides a hollow fiber membrane filament flux testing device that can test the continuous filtration effect of the hollow fiber membrane on sewage without changing the suction pressure difference of the hollow fiber membrane sucking sewage.

[0006] The technical solution adopted in this solution is as follows: A hollow fiber membrane filament flux testing device proposed in this solution includes a base, a test rack, a purification rate detection mechanism, and an anti-pressure-difference pulse spraying mechanism. The test rack is arranged on the upper wall of the base. The purification rate detection mechanism includes a membrane fixing mechanism, a liquid pressing mechanism, and a measurement value mechanism. The membrane fixing mechanism is arranged inside the test rack, the liquid pressing mechanism is arranged on the side wall of the test rack, and the measurement value mechanism is arranged on the side wall of the liquid pressing mechanism. The anti-pressure-difference pulse spraying mechanism includes a steering mechanism and a dust removal mechanism. The steering mechanism is arranged on the side of the membrane fixing mechanism close to the base, and the dust removal mechanism is arranged on the upper wall of the test rack.

[0007] As a further optimization of the solution in this case, the film fixing mechanism includes a liquid guide cylinder, a water injection mesh cylinder and a hollow fiber membrane body. The liquid guide cylinder is disposed through the inner wall of the upper part of the test rack, and the liquid guide cylinder is threadedly connected to the test rack. The water injection mesh cylinder is communicated and disposed on the bottom wall of the liquid guide cylinder, and the water injection mesh cylinder is threadedly connected to the liquid guide cylinder. The hollow fiber membrane body is communicated and disposed between the bottom wall of the liquid guide cylinder and the inner wall of the bottom of the water injection mesh cylinder. The liquid pressing mechanism includes a detection cylinder, a sliding pressing plate, a sliding magnet, an annular electromagnetic body, a water injection annular pipe, a suction metal hose and a control valve. The detection cylinder is disposed on the side wall of the test rack. The sliding pressing plate is slidably disposed on the inner wall of the detection cylinder. The sliding magnets are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate. The annular electromagnetic bodies are respectively disposed on the upper wall and the bottom wall of the detection cylinder. The sliding magnet and the annular electromagnetic body are oppositely arranged. The control valve is communicated and disposed on the bottom wall of the detection cylinder. The water injection annular pipe is communicated and disposed on the side away from the detection cylinder of the control valve. The suction metal hose is communicated and disposed between the upper wall of the detection cylinder and the upper wall of the liquid guide cylinder. The measurement mechanism includes an on-line salinity analyzer, a salinity analysis induction end, a heavy metal analyzer and a heavy metal analysis induction end. The on-line salinity analyzer and the heavy metal analyzer are respectively disposed on the side away from the test rack of the detection cylinder. The salinity analysis induction ends are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate. The heavy metal analysis induction ends are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate. The salinity analysis induction end is electrically connected to the on-line salinity analyzer, and the heavy metal analyzer is electrically connected to the heavy metal analysis induction end.

[0008] During use, pull out the suction metal hose from the upper wall of the liquid guide cylinder, rotate the liquid guide cylinder, and the rotation of the liquid guide cylinder along the inner wall of the test rack drives the water injection mesh cylinder to be pulled out from the inside of the test rack. Rotate the liquid guide cylinder, and the liquid guide cylinder is separated from the water injection mesh cylinder. Place the hollow fiber membrane body to be tested inside the water injection mesh cylinder. One end of the hollow fiber membrane body away from the water injection mesh cylinder is communicated with the liquid guide cylinder. Rotate the liquid guide cylinder into one side of the water injection mesh cylinder. The liquid guide cylinder drives the water injection mesh cylinder to be inserted into the inside of the test rack. The liquid guide cylinder is screwed into the inner wall of the test rack, and the hollow fiber membrane body is fixed inside the test rack. The annular electromagnetic body is energized to generate magnetism. The annular electromagnetic body on the upper wall of the detection cylinder and the sliding magnet on the upper wall of the sliding pressing plate are arranged with opposite polarities. The annular electromagnetic body on the bottom wall of the detection cylinder and the sliding magnet on the bottom wall of the sliding pressing plate are arranged with the same polarities. Under the action of the same-polarity magnetic field and opposite-polarity magnetic field of the annular electromagnetic body and the sliding magnet, the sliding pressing plate slides and rises along the detection cylinder. At this time, the space in the upper part of the detection cylinder is smaller than the space in the lower part of the detection cylinder. Inject sewage into the detection cylinder below the sliding pressing plate. The salinity analysis induction end and the heavy metal analysis induction end arranged below the sliding pressing plate detect the pollutant index in the sewage and record the detected data.

[0009] 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.

[0010] 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.

[0011] Specifically, a controller is provided on the side wall of the detection cylinder.

[0012] Wherein, the controller is electrically connected to the annular electromagnet, the salinity online analyzer, the heavy metal analyzer and the pulse generator respectively.

[0013] Preferably, the model of the controller is SYC89C52RC-401.

[0014] The beneficial effects achieved by this solution using the above structure are as follows:

[0015] Compared with the prior art, this solution combines a jet structure with a filtration structure. Through the set purification rate detection mechanism and the differential pressure-resistant pulse jet mechanism, with the combined use of the solid film mechanism, the liquid pressing mechanism, the value measuring mechanism, the steering mechanism, and the impurity removal mechanism, it is possible to test the continuous sewage filtration ability of the hollow fiber membrane body without changing the adsorption differential pressure of the hollow fiber membrane body. Under the blocking and jetting effects of the pulse strip arc box, the newly filled sewage is isolated from the filter net after the impurity removal operation, reducing the probability of the hollow fiber membrane body adsorbing sewage containing particulate impurities and preventing particulate impurities from adhering to the surface of the hollow fiber membrane body. Furthermore, it can ensure the adsorption effect of the hollow fiber membrane body on salts and heavy metal ions in the sewage, thereby accurately measuring the purification index of the hollow fiber membrane body for salts and heavy metal ions in the sewage. The steering rod drives the filter net containing impurities in the filtered sewage to rotate and fit with the pulse strip arc box. The new filter net rotates and is arranged opposite to the semi-cylinder, discharging 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, filling the untreated sewage into the detection cylinder below the sliding pressure plate to test the continuous filtration effect of the hollow fiber membrane body. The pulse wave generated by the pulse generator enters the pulse tube through the annular pulse tube. The pulse wave inside the pulse tube is sprayed through the pulse strip arc box and the pulse port onto the filter net adsorbing impurities, and the impurities on the adsorption surface of the filter net are blown into the impurity collection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of this solution;

[0017] Figure 2 It is a bottom perspective view of this solution;

[0018] Figure 3 It is a schematic diagram of the internal structure of this solution;

[0019] Figure 4 It is a schematic diagram of the internal structure of the steering mechanism of this solution;

[0020] Figure 5 It is a schematic diagram of the external structure of the steering mechanism of this solution;

[0021] Figure 6 It is a schematic diagram of the combined structure of the semi-cylinder and the water injection ring pipe of this solution;

[0022] Figure 7 It is the front view of this solution;

[0023] Figure 8 It is the side view of this solution;

[0024] Figure 9 is the top view of this solution;

[0025] Figure 10 is Figure 7 the sectional view taken along the line A-A of;

[0026] Figure 11 is Figure 8 the sectional view taken along the line B-B of;

[0027] Figure 12 is Figure 3 the enlarged structural view of part Ⅰ of;

[0028] Figure 13 is Figure 10 the enlarged structural view of part Ⅱ of;

[0029] Figure 14 is Figure 3 the enlarged structural view of part Ⅲ of;

[0030] Figure 15 is Figure 11 the enlarged structural view of part Ⅳ of.

[0031] Among them, 1. base, 2. test stand, 3. purification rate detection mechanism, 4. film fixing mechanism, 5. liquid guide cylinder, 6. water injection mesh cylinder, 7. hollow fiber membrane body, 8. liquid pressing mechanism, 9. detection cylinder, 10. sliding pressing plate, 11. sliding magnet, 12. annular electromagnet, 13. water injection ring pipe, 14. suction metal hose, 15. measurement mechanism, 16. salinity on-line analyzer, 17. salinity analysis induction end, 18. heavy metal analyzer, 19. heavy metal analysis induction end, 20. differential pressure-proof pulse jet mechanism, 21. steering mechanism, 22. steering groove, 23. filter cylinder, 24. filter screen, 25. steering rod, 26. semi-cylindrical barrel, 27. impurity removal mechanism, 28. pulse generator, 29. annular pulse cylinder, 30. pulse pipe, 31. pulse strip arc box, 32. pulse port, 33. impurity collection plate, 34. controller, 35. control valve.

[0032] The attached drawings are used to provide a further understanding of this solution, and constitute a part of the specification. Together with the embodiments of this solution, they are used to explain this solution, and do not constitute a limitation to this solution. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of this solution will be clearly and completely described in conjunction with the attached drawings in the embodiments of this solution. Obviously, the described embodiments are only a part of the embodiments of this solution, rather than all the embodiments; based on the embodiments in this solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by this solution.

[0034] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing this solution and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this solution.

[0035] As Figures 1 - 15 shown, the technical solution adopted in this solution is as follows: A hollow fiber membrane filament flux testing device proposed in this solution includes a base 1, a testing frame 2, a purification rate detection mechanism 3, and an anti-pressure-difference type pulse jet mechanism 20. The testing frame 2 is arranged on the upper wall of the base 1. The purification rate detection mechanism 3 includes a film fixing mechanism 4, a liquid pressing mechanism 8, and a value measuring mechanism 15. The film fixing mechanism 4 is arranged inside the testing frame 2. The liquid pressing mechanism 8 is arranged on the side wall of the testing frame 2. The value measuring mechanism 15 is arranged on the side wall of the liquid pressing mechanism 8. The anti-pressure-difference type pulse jet mechanism 20 includes a steering mechanism 21 and a impurity removing mechanism 27. The steering mechanism 21 is arranged on the side of the film fixing mechanism 4 close to the base 1. The impurity removing mechanism 27 is arranged on the upper wall of the testing frame 2.

[0036] The solid film mechanism 4 includes a liquid guide cylinder 5, a water injection mesh cylinder 6 and a hollow fiber membrane body 7. The liquid guide cylinder 5 is disposed through the inner wall of the upper part of the test stand 2, and the liquid guide cylinder 5 is threadedly connected to the test stand 2. The water injection mesh cylinder 6 is communicated and disposed on the bottom wall of the liquid guide cylinder 5, and the water injection mesh cylinder 6 is threadedly connected to the liquid guide cylinder 5. The hollow fiber membrane body 7 is communicated and disposed between the bottom wall of the liquid guide cylinder 5 and the inner wall of the bottom of the water injection mesh cylinder 6. The liquid pressing mechanism 8 includes a detection cylinder 9, a sliding pressing 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 cylinder 9 is disposed on the side wall of the test stand 2. The sliding pressing plate 10 is slidably disposed on the inner wall of the detection cylinder 9. The sliding magnets 11 are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate 10. The annular electromagnets 12 are respectively disposed on the upper wall and the bottom wall of the detection cylinder 9. The sliding magnet 11 and the annular electromagnet 12 are oppositely arranged. The control valve 35 is communicated and disposed on the bottom wall of the detection cylinder 9. The water injection ring pipe 13 is communicated and disposed on the side away from the detection cylinder 9 of the control valve 35. The suction metal hose 14 is communicated and disposed between the upper wall of the detection cylinder 9 and the upper wall of the liquid guide cylinder 5. The measurement mechanism 15 includes a salinity on-line analyzer 16, a salinity analysis induction end 17, a heavy metal analyzer 18 and a heavy metal analysis induction end 19. The salinity on-line analyzer 16 and the heavy metal analyzer 18 are respectively disposed on the side away from the test stand 2 of the detection cylinder 9. The salinity analysis induction ends 17 are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate 10. The heavy metal analysis induction ends 19 are respectively disposed on the upper wall and the bottom wall of the sliding pressing plate 10. The salinity analysis induction end 17 is electrically connected to the salinity on-line analyzer 16, and the heavy metal analyzer 18 is electrically connected to the heavy metal analysis induction end 19.

[0037] The steering mechanism 21 includes a steering groove 22, a filter cylinder 23, a filter screen 24, a steering rod 25, and a semi-cylindrical cylinder 26. The steering groove 22 is provided between the base 1 and the test stand 2, and the steering groove 22 is through. 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 mesh cylinder 6. The filter cylinder 23 is open at the upper end. One side of the water injection mesh cylinder 6 away from the liquid guide cylinder 5 is attached to the inner wall of the bottom of the filter cylinder 23. The filter screens 24 are symmetrically arranged on both sides of the filter cylinder 23. The semi-cylindrical cylinder 26 is arranged on the inner wall of the end of the test stand 2 away from the detection cylinder 9. One end of the semi-cylindrical cylinder 26 away from the inner wall of the test stand 2 is rotatably connected to the filter cylinder 23. The filter cylinder 23 rotates along the inner wall of the semi-cylindrical cylinder 26. One end of the water injection ring pipe 13 away from the control valve 35 is communicated with the semi-cylindrical cylinder 26. The impurity removal mechanism 27 includes a pulse generator 28, an annular pulse cylinder 29, a pulse pipe 30, a pulse strip arc box 31, a pulse port 32, and a impurity collection plate 33. The pulse generator 28 is arranged on the upper wall of the test stand 2. The annular pulse cylinder 29 is arranged on the inner wall of the top of the test stand 2 outside the liquid guide cylinder 5. One side of the filter cylinder 23 away from the steering rod 25 is rotatably arranged on the bottom wall of the annular pulse cylinder 29 outside the water injection mesh cylinder 6. The pulse pipe 30 is communicated between the annular pulse cylinder 29 and the power end of the pulse generator 28. The pulse strip arc box 31 is communicated with the bottom wall of the annular pulse cylinder 29 between the filter cylinder 23 and the water injection mesh 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 mesh cylinder 6. The pulse strip arc box 31 is filled in the gap between the filter cylinder 23 and the water injection mesh cylinder 6. The impurity collection plate 33 is arranged on the bottom wall of the test stand 2 below the filter cylinder 23.

[0038] A controller 34 is provided on the side wall of the detection cylinder 9.

[0039] The controller 34 is electrically connected to the annular electromagnet 12, the salinity on-line analyzer 16, the heavy metal analyzer 18, and the pulse generator 28 respectively.

[0040] The model of the controller 34 is SYC89C52RC-401.

[0041] During specific use, in the initial state, the filter screen 24 on one side of the filter cylinder 23 is located inside the semi-cylindrical cylinder 26. The semi-cylindrical cylinder 26 is a cavity with one end open. The inner diameter of the filter cylinder 23 is the same as the outer diameter of the annular pulse cylinder 29. The inner wall of the filter cylinder 23 is in mutual contact with the side wall of the annular pulse cylinder 29. A sealing strip is arranged at the contact part between the annular pulse cylinder 29 and the filter cylinder 23. The filter screen 24 on the side of the filter cylinder 23 close to the annular pulse cylinder 29 is arranged opposite to the pulse port 32, so that one side of the filter cylinder 23 is communicated with the semi-cylindrical cylinder 26, and the other side of the filter cylinder 23 is communicated with the annular pulse cylinder 29.

[0042] The suction metal hose 14 is inserted into the liquid guide cylinder 5. Pull out the suction metal hose 14 from the upper wall of the liquid guide cylinder 5, and manually rotate the liquid guide cylinder 5. The liquid guide cylinder 5 rotates out of the inner wall of the test stand 2, and the liquid guide cylinder 5 drives the water injection mesh cylinder 6 to be pulled out from inside the filter cylinder 23. Rotate the liquid guide cylinder 5, and the liquid guide cylinder 5 is separated from the water injection mesh cylinder 6. One side of the liquid guide cylinder 5 close to the water injection mesh cylinder 6 is open. The water injection mesh cylinder 6 is through. 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 cylinder 5, and the connector at one end of the hollow fiber membrane body 7 close to the liquid guide cylinder 5 is communicated with it. The water injection mesh cylinder 6 is sleeved on the outside 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 mesh cylinder 6 far from the liquid guide cylinder 5, and the connector at one end of the hollow fiber membrane body 7 close to the water injection mesh cylinder 6 is sealed;

[0043] Place the hollow fiber membrane body 7 to be tested inside the water injection mesh cylinder 6. The liquid guide cylinder 5 drives the water injection mesh cylinder 6 to penetrate the test stand 2 and be inserted into the filter cylinder 23. The liquid guide cylinder 5 is screwed into the inner wall of the test stand 2, and the hollow fiber membrane body 7 is fixed inside the filter cylinder 23;

[0044] The controller 34 controls the annular electromagnet 12 to start. The annular electromagnet 12 is energized to generate magnetism. The annular electromagnet 12 on the upper wall of the detection cylinder 9 and the sliding magnet 11 on the upper wall of the sliding pressure plate 10 are arranged with opposite polarities. The annular electromagnet 12 on the bottom wall of the detection cylinder 9 and the sliding magnet 11 on the bottom wall of the sliding pressure plate 10 are arranged with the same polarity. Under the action of the same-polarity magnetic field and opposite-polarity magnetic field of the annular electromagnet 12 and the sliding magnet 11, the sliding pressure plate 10 slides up along the detection cylinder 9. The space in the upper part of the detection cylinder 9 is smaller than the space in the lower part of the detection cylinder 9. Inject sewage into the detection cylinder 9 below the sliding pressure plate 10. The gas in the upper space of the detection cylinder 9 enters the liquid guide cylinder 5 through the suction metal hose 14. 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 inside of the hollow fiber membrane body 7, reducing the amount of pollutants attached to the surface of the hollow fiber membrane body 7, and preventing pollutants from being sucked into it when the hollow fiber membrane body 7 is pumping sewage, affecting its sewage filtration efficiency, and further affecting the test results of the hollow fiber membrane body 7;

[0045] The controller 34 controls the start of the on-line salinity analyzer 16 and the heavy metal analyzer 18. The on-line salinity analyzer 16 and the heavy metal analyzer 18 detect the pollutant index in the sewage through the salinity analysis induction end 17 and the heavy metal analysis induction 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 and bottom walls of the detection cylinder 9 to change the magnetic poles. The annular electromagnet 12 on the upper wall of the detection cylinder 9 is arranged with opposite poles to the sliding magnet 11 on the upper wall of the sliding pressure plate 10, and the annular electromagnet 12 on the bottom wall of the detection cylinder 9 is arranged with opposite poles to the sliding magnet 11 on the bottom wall of the sliding pressure plate 10, and the sliding pressure plate 10 slides down along the inner wall of the detection cylinder 9;

[0046] Open the control valve 35, and the water injection ring pipe 13 is communicated with the detection cylinder 9. The sewage inside the detection cylinder 9 flows into the inside of the water injection ring pipe 13 through the control valve 35. The sewage inside the water injection ring pipe 13 enters the inside of the semi-cylindrical barrel 26. A sealing strip is arranged at the joint where the semi-cylindrical barrel 26 is fitted and connected with the filter barrel 23. The sewage inside the semi-cylindrical barrel 26 enters the inside of the water injection mesh barrel 6 after being filtered by the filter net 24 and contacts the hollow fiber membrane main body 7. During the descending process of the sliding pressure plate 10, the sewage inside the water injection mesh barrel 6 is pumped. The sewage after impurity removal inside the water injection mesh barrel 6 enters the inside of the liquid guide cylinder 5 after being filtered by the hollow fiber membrane main body 7. The filtered sewage inside the liquid guide cylinder 5 flows into the inside of the detection cylinder 9 through the suction metal hose 14. The sewage filtered by the hollow fiber membrane main body 7 falls into the inside of the detection cylinder 9 above the sliding pressure plate 10. When the sliding pressure plate 10 descends to the bottom of the detection cylinder 9, all the sewage inside the water injection mesh barrel 6 is sucked into the inside of the detection cylinder 9 above the sliding pressure plate 10;

[0047] The controller 34 controls the start of the on-line salinity analyzer 16 and the heavy metal analyzer 18. The on-line salinity analyzer 16 and the heavy metal analyzer 18 detect the pollutant index inside the purified sewage through the salinity analysis induction end 17 and the heavy metal analysis induction end 19 on the upper wall of the sliding pressure plate 10. When the pollutant index of the sewage 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 main body 7 passes;

[0048] When it is necessary to test the continuous filtration effect of the hollow fiber membrane main body 7, in order to avoid the filter net 24 adsorbing impurities from changing the suction pressure of the hollow fiber membrane main body 7, a drain valve is pre-set at the bottom of 9. Open the drain valve to discharge the sewage inside the detection cylinder 9, and then close the drain valve. Manually rotate the steering rod 25, and the steering rod 25 drives the filter net 24 containing impurities after filtering sewage to rotate and fit with the pulse strip arc box 31, and the new filter net 24 rotates and is arranged opposite to the semi-cylindrical barrel 26;

[0049] The controller 34 controls the activation of the toroidal electromagnet 12. When the toroidal electromagnet 12 is energized, it generates magnetism. Under the action of the magnetic field of the toroidal electromagnet 12, the sliding pressure plate 10 rises to the top of the detection cylinder 9, and untreated sewage is filled into the detection cylinder 9 below the sliding pressure plate 10 to test the continuous filtration effect of the hollow fiber membrane body 7.

[0050] The controller 34 controls the activation of the pulse generator 28. The pulse wave generated by the pulse generator 28 enters the pulse tube 30 through the toroidal pulse cylinder 29. The pulse wave inside the pulse tube 30 is sprayed onto the filter screen 24 that adsorbs impurities through the pulse strip arc box 31 and the pulse port 32. The impurities on the adsorption surface of the filter screen 24 are blown into the impurity collection plate 33 to automatically clean the filter screen 24, facilitating the use of the filter screen 24 without affecting the adsorption pressure difference of the hollow fiber membrane body 7. Just repeat the above operations for the next use.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0052] The above describes the solution and its implementation manner. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of this solution, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of this solution, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of this 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 membrane solidifying mechanism comprises a liquid guiding cylinder, a water injection net cylinder and a hollow fiber membrane body; The liquid guide cylinder is arranged through the upper inner wall of the test frame, the water injection net cylinder is arranged in communication with the bottom wall of the liquid guide cylinder, the liquid guide cylinder is threadedly connected to the test frame, the water injection net cylinder is threadedly connected to the liquid guide cylinder, and the hollow fiber membrane body is arranged in communication between the bottom wall of the liquid guide cylinder and the bottom inner wall of the water injection net 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; The impurity removal mechanism comprises 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 inner wall of the top 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, a plurality of 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.

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 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.

4. A 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.

5. A hollow fiber membrane flux testing device according to claim 4, 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.

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