A hollow fiber membrane flux testing device and working method thereof

Abstract

The present invention discloses a hollow fiber membrane flux test device and a working method thereof, which is connected to an external gas source. The flux test device comprises a flux test mechanism, a bubble point test mechanism and an adjustment mechanism. The adjustment mechanism is connected to the external gas source and is respectively connected to the flux test mechanism and the bubble point test mechanism. The adjustment mechanism distributes the power provided by the external gas source to the flux test mechanism and the bubble point test mechanism respectively, and adjusts the power size. The present invention connects the external gas source to the flux test mechanism and the bubble point mechanism through the adjustment mechanism, and distributes the power to the flux test mechanism and the bubble point mechanism respectively, so that the flux test and the bubble point test can be carried out simultaneously.

Description

Technical Field

[0001] The invention relates to the technical field of hollow fiber membrane flux detection, and in particular to a hollow fiber membrane flux testing device and a working method thereof. Background Art

[0002] With the continuous expansion of the membrane water treatment market, hollow fiber membranes have a wider range of uses in the water treatment industry due to their larger specific surface area. The research and development and production of hollow fiber membranes have also developed rapidly. The ideal membrane process should have both good selectivity and high permeability. In fact, there is often a contradiction between the two. Finding a suitable balance between the two has always been an important content in the research of membrane separation technology. The biggest obstacle to the application of hollow fiber membranes in water treatment is the membrane pollution caused by high flux. If the pores are too small, the flux will be very low; if the pores are too large, pollutants will enter the membrane pores and be adsorbed and trapped inside the membrane pores, accelerating the rate of membrane pollution. There is a suitable range of pore size. It is very important to carefully select the membrane pore structure as needed to reduce pollution and prevent membrane clogging. Therefore, it is very important to conduct pore size testing and flux testing in real time during research and development and production.

[0003] The basic principle of membrane separation is to use pressure difference as the driving force and utilize the permeation and retention properties of membrane pores to separate different components. The working efficiency of membrane separation is measured by permeation flux and separation efficiency.

[0004] The bubble point method is a simple method used to characterize the maximum pore size of a membrane. This method mainly determines the pressure required to blow air through a membrane filled with liquid. The hollow fiber membrane is in contact with a liquid (such as water), and the liquid wets the membrane, and all pores are filled with liquid. The hollow fiber membrane is connected to the air, and when the air pressure gradually increases to a certain value, bubbles will pass through the membrane.

[0005] The testing method for a single membrane filament is to place the single membrane filament in a sealed cavity, introduce the original liquid into the sealed cavity, apply a certain pressure, and observe the new liquid that permeates through the membrane filament to determine the water flux of the membrane filament.

[0006] However, in the prior art, although the hollow fiber membrane detection equipment can detect the bubble point and water flux of the fiber membrane, the two can only be detected one by one and cannot be run at the same time, which greatly reduces the detection efficiency. Summary of the invention

[0007] In view of the above problems existing in the prior art, the present invention aims to provide a hollow fiber membrane flux testing device and a working method thereof which can simultaneously detect the bubble point and water flux of the fiber membrane.

[0008] The specific technical solutions are as follows:

[0009] 1. A hollow fiber membrane flux testing device, connected to an external gas source, characterized in that the flux testing device comprises a flux testing mechanism, a bubble point testing mechanism and an adjustment mechanism;

[0010] The regulating mechanism is connected to the external gas source and is respectively connected to the flux testing mechanism and the bubble point testing mechanism, and the regulating mechanism distributes the power provided by the external gas source to the flux testing mechanism and the bubble point testing mechanism respectively, and adjusts the power size;

[0011] The regulating mechanism comprises: a first gas transmission unit, a second gas transmission unit and a third gas transmission unit, one end of the first gas transmission unit is connected to the external gas source, and the other end is respectively connected to the second gas transmission unit and the third gas transmission unit, the second gas transmission unit is connected to the flux testing mechanism, and the third gas transmission unit is connected to the bubble point testing mechanism, and the power of the gas source is output to the flux testing mechanism and the bubble point testing mechanism respectively;

[0012] The flux testing mechanism comprises a water storage unit, a water delivery unit and a flux testing unit, wherein the water storage unit is connected to the water delivery unit and the second gas delivery unit respectively, and the water delivery unit is also connected to the flux testing unit;

[0013] The bubble point test mechanism comprises a bubble point test unit and a bubble point test control unit, the bubble point test unit is connected to the third gas delivery unit, and the bubble point test control unit is arranged on the third gas delivery unit;

[0014] The first gas delivery unit includes a first gas pipe and a pressure regulating component, one end of the first gas pipe is connected to the external gas source, and the other end is respectively connected to the second gas delivery unit and the third gas delivery unit, and the pressure regulating component is arranged on the first gas pipe;

[0015] The second gas transmission unit includes a second gas pipe and a flux control component, one end of the second gas pipe is connected to the first gas pipe, and the other end is connected to the water storage unit, and the flux control component is arranged on the second gas pipe;

[0016] The third gas transmission unit includes a third air pipe and a bubble point control component, one end of the third air pipe is connected to the first air pipe, and the other end includes at least one bronchus, the bronchus is connected to the bubble point testing mechanism, and the bubble point control component is arranged on the third air pipe to control the opening and closing of the third air pipe;

[0017] The water storage unit includes a water storage tank, a water inlet assembly and an exhaust assembly, wherein the water storage tank includes a water inlet connected to the water inlet assembly, a water outlet connected to the water delivery unit, an air inlet connected to the second air pipe and an exhaust outlet connected to the exhaust assembly;

[0018] The water delivery unit comprises a first water delivery pipeline, a first drainage pipeline and a plurality of second water delivery pipelines, wherein one end of the first water delivery pipeline is connected to the water outlet, and the other end is connected to the second water delivery pipeline, one end of the first drainage pipeline is connected to the first water delivery pipeline, and the other end is connected to the outside for drainage, the first drainage pipeline is provided with a drainage control valve for controlling the opening and closing of the first drainage pipeline, and the other end of the second water delivery pipeline is connected to the flux testing unit;

[0019] The flux test unit includes a flux regulating member and a flux test assembly, wherein the flux regulating member and the flux test assembly correspond to the second water pipeline one by one, respectively, the flux regulating member is arranged in the corresponding second water pipeline, and the flux test assembly is connected to the corresponding second water pipeline;

[0020] The bubble point test unit includes a bubble point adjustment member and a bubble point test assembly. The number of the bubble point adjustment members and the bubble point test assembly corresponds to the number of the bronchi. The bubble point adjustment member is arranged on the corresponding bronchi, and the bubble point test assembly is connected to the corresponding bronchial outlet.

[0021] 2. The hollow fiber membrane flux testing device according to claim 1 is characterized in that it also includes a box body, the bubble point test mechanism, the flux test mechanism and the adjustment mechanism are all arranged in the box body, the box body also includes a water circulation chamber, the bubble point test component and the flux test component are both arranged above the water circulation chamber, and the water circulation chamber is provided with a plurality of water inlet holes, a second drainage pipe connected with the first drainage pipe is arranged in the water circulation chamber, and the second drainage pipe is arranged between the water outlet of the first drainage pipe and the drainage control valve, so as to directly discharge the water used for the test.

[0022] 3. A method for operating the hollow fiber membrane flux testing device according to claim 1 or 2, characterized in that it comprises the steps of:

[0023] S1: Test whether the adjustment mechanism, bubble point test mechanism and flux test mechanism are unobstructed;

[0024] S2: Flux test water injection;

[0025] S3: exhaust of flux test pipeline;

[0026] S4: Perform bubble point and / or flux test;

[0027] S5: Equipment emptying.

[0028] 4. The working method of the hollow fiber membrane flux testing device according to claim 3, characterized in that the step S4 specifically comprises:

[0029] S41: Install the membrane sample to be tested, open the bubble point main valve and sub-valve, slowly adjust the electronic pressure regulator until the pressure value when the first series of continuous bubbles appears in the liquid storage tank where the membrane sample is immersed is the bubble point pressure, then close the bubble point main valve and bubble point sub-valve, and return the electronic pressure regulator to zero;

[0030] S42: Install the product to be tested, open the flux master valve and flux sub-valve, slowly adjust the electronic pressure regulator until the pressure value displayed is a certain value to start testing the membrane flux. After the test is completed, close the flux master valve and flux sub-valve, and return the electronic pressure regulator to zero.

[0031] 5. The working method of the hollow fiber membrane flux testing device according to claim 4, characterized in that:

[0032] S41 and S42 can be performed in any order and can be performed simultaneously.

[0033] Compared with the prior art, the advantages of the present invention are:

[0034] (1) In the present invention, the bubble point mechanism, the flux test mechanism and the regulating mechanism are integrated to realize the integrated design of the fiber membrane bubble point test and the flux test. At the same time, a water circulation chamber is provided in the box body, and the used water is discharged from the first drainage pipe and the second drainage pipe through the water inlet hole.

[0035] (2) In addition, in the present invention, the first air pipe, the second air pipe and the third air pipe are arranged. Since the second air pipe is connected to the flux test mechanism and the third air pipe is connected to the bubble point test mechanism, the bubble point test and the flux test are powered by different pipelines, and the on-off of the second air pipe and the third air pipe are controlled by the flux main valve and the bubble point main valve respectively, so that the bubble point mechanism and the flux test mechanism can be operated simultaneously or separately, making the fiber membrane detection more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the hollow fiber membrane flux testing device of the present invention;

[0037] Figure 2 It is a top view of the adjustment mechanism and the box body in the hollow fiber membrane flux testing device of the present invention;

[0038] Figure 3 It is a schematic diagram of the internal structure of the flux testing mechanism and the box body in the hollow fiber membrane flux testing device of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the adjustment structure of the hollow fiber membrane flux testing device of the present invention;

[0040] Figure 5It is a structural schematic diagram of the water delivery unit in the hollow fiber membrane flux testing device of the present invention.

[0041] In the accompanying drawings: 1, box body; 11, water inlet; 21, flux test assembly; 22, exhaust valve; 23, water inlet valve 23; 24, flux sub-valve; 31, bubble point test assembly; 32, bubble point sub-valve; 33, bubble point main valve; 41, electronic pressure regulator; 42, flux main valve; 43, first air pipe; 44, second air pipe; 45, third air pipe; 46, bronchus; 51, first water pipeline; 52, second water pipeline; 53, first drainage pipeline; 54, second drainage pipeline; 55, drainage control valve; 61, water storage tank; 611, water inlet; 612, exhaust port; 613, air inlet; 62, exhaust pipe; 63, water inlet pipe. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the present invention. Embodiment 1

[0043] Figure 1 This is a schematic diagram of the structure of the hollow fiber membrane flux test device of the present invention; please refer to Figure 1 As shown, a preferred hollow fiber membrane flux test device is shown, which is connected to an external gas source to provide a power source for flux testing and bubble point testing. The flux testing device includes a flux testing mechanism, a bubble point testing mechanism and an adjustment mechanism.

[0044] The regulating mechanism is connected to the external gas source and is respectively connected to the flux testing mechanism and the bubble point testing mechanism. The external gas source provides power for the detection operation of the flux testing mechanism and the bubble point testing mechanism. The regulating mechanism distributes the power provided by the external gas source to the flux testing mechanism and the bubble point testing mechanism respectively, and adjusts the power size.

[0045] In the present invention, the external gas source is connected to the flux test mechanism and the bubble point mechanism through the regulating mechanism, and the power is respectively distributed to the flux test mechanism and the bubble point mechanism, so that the flux test and the bubble point test can be carried out simultaneously. Embodiment 2

[0046] In this embodiment, more specifically, the regulating mechanism includes a first gas transmission unit, a second gas transmission unit and a third gas transmission unit, wherein one end of the first gas transmission unit is connected to the external gas source, and the other end is connected to the second gas transmission unit and the third gas transmission unit respectively. The first gas transmission unit regulates and distributes the power provided by the external gas source. The second gas transmission unit is connected to the flux test mechanism, and the third gas transmission unit is connected to the bubble point test mechanism, and the power of the gas source is output to the flux test mechanism and the bubble point test mechanism respectively, thereby controlling their operation.

[0047] In this embodiment, more specifically, the flux testing mechanism includes a water storage unit, a water delivery unit and a flux testing unit, wherein the water storage unit is respectively connected to the water delivery unit and a second gas delivery unit, and the water delivery unit is also connected to the flux testing unit. The second gas delivery unit delivers power provided by an external gas source to the water storage unit, and outputs water in the water storage unit to the flux testing unit through the water delivery unit, thereby testing the fiber membrane.

[0048] In addition, the bubble point testing mechanism includes a bubble point testing unit and a bubble point testing control unit. The bubble point testing unit is connected to the third gas delivery unit. The bubble point testing control unit is arranged on the third gas delivery unit, and controls the operation of the bubble point testing unit by controlling the external gas source delivered by the third gas delivery unit.

[0049] In the present invention, the regulating mechanism is provided with a plurality of gas delivery units, thereby delivering the gas source to different mechanisms, thereby preventing the bubble point mechanism and the flux test mechanism from interfering with each other during operation, thereby realizing the simultaneous operation of the two mechanisms. Embodiment 3

[0050] Figure 2 It is a top view of the adjustment mechanism and the box body in the hollow fiber membrane flux testing device of the present invention; Figure 3 It is a schematic diagram of the internal structure of the flux testing mechanism and the box body in the hollow fiber membrane flux testing device of the present invention; Figure 4 It is a structural schematic diagram of the adjustment structure of the hollow fiber membrane flux testing device of the present invention; Figure 5 This is a schematic diagram of the structure of the water delivery unit in the hollow fiber membrane flux test device of the present invention. Figures 2 to 5As shown, in this embodiment, the first gas delivery unit includes a first gas pipe 43 and a pressure regulating member, one end of the first gas pipe 43 is connected to the external gas source, and the other end is respectively connected to the second gas delivery unit and the third gas delivery unit, and the pressure regulating member is arranged on the first gas pipe 43 to adjust the pressure inside the first gas pipe 43, the second gas delivery unit and the third gas delivery unit, thereby realizing the control of the bubble point detection and flux detection pressure. The pressure regulating member can be an electronic pressure regulator 41, a manual pressure regulating valve, etc. In this embodiment, the pressure regulating member is preferably an electronic pressure regulator 41.

[0051] The second gas transmission unit includes a second gas pipe 44 and a flux control component, wherein one end of the second gas pipe 44 is connected to the first gas pipe 43, and the other end is connected to the water storage unit, thereby providing power for the operation of the flux detection mechanism, and the flux control component is arranged on the second gas pipe 44 to control the opening and closing of the second gas pipe 44. In this embodiment, the flux control component is a flux master valve 42.

[0052] The third gas delivery unit includes a third gas pipe 45 and a bubble point control component, wherein one end of the third gas pipe 45 is connected to the first gas pipe 43, and the other end includes at least one bronchial tube 46, and the bronchial tube 46 is connected to the bubble point test mechanism to provide a gas source for the operation of the bubble point test mechanism. The bubble point control component is arranged on the third gas pipe 45 to control the opening and closing of the third gas pipe 45. In this embodiment, the bubble point control component is a bubble point master valve 33.

[0053] The water storage unit includes a water tank 61, a water inlet assembly and an exhaust assembly. The water tank 61 includes a water inlet 611 connected to the water inlet assembly, a water outlet connected to the water delivery unit, an air inlet 613 connected to the second air pipe 44 and an exhaust outlet 612 connected to the exhaust assembly. The water tank 61 of the present invention is connected or closed to the outside through the arrangement of the water inlet assembly and the exhaust assembly, thereby realizing water filling into the water tank 61 and driving the liquid in the water tank 61 to flow to the water delivery unit through the air source.

[0054] The water delivery unit includes a first water delivery pipeline 51, a first drainage pipeline 53, and a plurality of second water delivery pipelines 52, wherein one end of the first water delivery pipeline 51 is connected to the water outlet, and the other end is connected to the second water delivery pipeline 52, and one end of the first drainage pipeline 53 is connected to the first water delivery pipeline 51, and the other end is connected to the outside for drainage. A drainage control valve 55 for controlling the opening and closing of the first drainage pipeline 53 is provided on the first drainage pipeline 53, and the other end of the second water delivery pipeline 52 is connected to the flux test unit.

[0055] The flux test unit includes a flux regulating member and a flux test assembly 21, wherein the flux regulating member and the flux test assembly 21 correspond to the second water pipeline 52 one by one. The flux regulating member is arranged in the corresponding second water pipeline 52, and the flux test assembly 21 is connected to the corresponding second water pipeline 52. The flux regulating member is a flux valve 24.

[0056] The bubble point test unit includes a bubble point adjustment member and a bubble point test assembly 31, wherein the number of the bubble point adjustment members and the bubble point test assembly 31 corresponds to the number of the bronchial tubes 46, the bubble point adjustment member is arranged on the corresponding bronchial tubes 46, and the bubble point test assembly 31 is connected to the gas outlet of the corresponding bronchial tubes 46. The bubble point adjustment member is a bubble point valve 32.

[0057] In this embodiment, the number of bronchus 46 is preferably one.

[0058] There are two second water delivery pipelines 52 .

[0059] The exhaust assembly includes an exhaust pipe 62 connected to the exhaust port 612 and an exhaust valve 22 arranged on the exhaust pipe 62 ; the water inlet assembly includes an inlet pipe 63 connected to the water inlet 611 and a water inlet valve 23 arranged on the inlet pipe 63 . Embodiment 4

[0060] This embodiment further includes a box 1, and the bubble point mechanism, flux testing mechanism and regulating mechanism are all arranged in the box 1, so that the present invention realizes an integrated design of bubble point detection and flux detection.

[0061] In addition, the box body 1 also includes a water circulation chamber, the bubble point test component 31 and the flux test component 21 are both arranged above the water circulation chamber, and a plurality of water inlet holes 11 are arranged on the water circulation chamber, and a second drainage pipe 54 connected to the first drainage pipe 53 is arranged in the water circulation chamber, and the second drainage pipe 54 is arranged between the water outlet of the first drainage pipe 53 and the drainage control valve 55, so as to directly discharge the water used for the test.

[0062] In addition, the water inlet assembly includes a water inlet pipe 63 and a water inlet control valve arranged on the water inlet pipe 63; the exhaust assembly includes an exhaust pipe 62 and an exhaust control valve arranged on the exhaust pipe 62.

[0063] In addition, a flow rate testing device is also provided on the first water delivery pipeline 51 to display the flow rate.

[0064] In the present invention, when bubble point detection is performed instead of flux detection, the flux main valve 42 is closed, the bubble point main valve 33 and the bubble point sub-valve 32 are opened, and the gas enters from the first gas pipeline through the third gas pipeline 45 to reach the bronchial tube 46, and is output by the bubble point test component 31, and the value of the electronic pressure regulator 41 is adjusted to test the fiber membrane. The burst point test method is the same as the bubble point test method.

[0065] When the flux detection is performed without the bubble point detection, water is firstly injected into the water storage tank 61. After the water injection is completed, the bubble point main valve 33 is closed to prevent the gas from flowing to the third gas pipeline, the flux main valve 42 and the flux sub-valve 24 are opened, and the exhaust valve 22, the water inlet valve 23, and the drainage control valve 55 are closed. The value of the electronic pressure regulator 41 is adjusted, and the gas enters through the second gas pipeline 44 from the first gas pipeline. The flux main valve 42 adjusts the amount of gas input into the water storage tank 61. After the gas enters the water storage tank 61, the pressure in the water storage tank 61 is increased, and the water is squeezed into the first water pipeline 51, and then enters the second water pipeline 52, and is output through the flux test component 21. The water delivery flux sub-valve 24 adjusts the water flow output by the flux test component 21 by adjusting the valve port, so as to detect the fiber membrane.

[0066] When the flux detection and bubble point detection are performed simultaneously, the exhaust valve 22, the water inlet valve 23, and the drainage control valve 55 are closed, and the flux main valve 42, the flux sub-valve 24, the bubble point main valve 33 and the bubble point sub-valve 32 are opened, and then the gas source is opened so that the gas enters from the first gas pipe 43 and then flows to the second gas pipe 44 and the third gas pipe 45. The value of the electronic pressure regulator 41 is adjusted to obtain the required value.

[0067] The used water flows into the water circulation chamber through the water inlet hole 11 and is discharged through the first drainage pipe 53 and the second drainage pipe 54 .

[0068] After the instrument is used, the exhaust valve 22 and the drain control valve 55 are opened to drain the water in the water storage tank 61.

[0069] In the present invention, the bubble point mechanism, the flux test mechanism and the regulating mechanism are integrated to realize the integrated design of the fiber membrane bubble point test and the flux test. At the same time, a water circulation chamber (not shown in the figure) is provided in the box body 1, and the used water is discharged from the first drainage pipe 53 and the second drainage pipe 54 through the water inlet hole 11. In addition, in the present invention, the first air pipe 43, the second air pipe 44 and the third air pipe 45 are provided. Since the second air pipe 44 is connected to the flux test mechanism and the third air pipe 45 is connected to the bubble point test mechanism, the bubble point test and the flux test are powered by different pipelines, and the second air pipe 44 and the third air pipe 45 are respectively controlled by the flux main valve 42 and the bubble point main valve 33, so that the bubble point mechanism and the flux test mechanism can be operated simultaneously or separately, making the fiber membrane detection more convenient.

[0070] In addition, a preferred method of working a hollow fiber membrane flux test device, comprising the steps;

[0071] S1: Test whether the regulating mechanism, bubble point mechanism and flux testing mechanism are unobstructed;

[0072] S2: Flux test water injection;

[0073] S3: exhaust of flux test pipeline;

[0074] S4: Perform bubble point and / or flux test;

[0075] S5: Equipment emptying.

[0076] Specifically, the step S1 further includes the steps of:

[0077] S11: Close all valves on the pipeline and connect the power supply and gas source;

[0078] S12: Turn off the electronic voltage regulator 41 and reset it to zero.

[0079] The specific step S2 includes the following steps:

[0080] S21: Adjust the electronic voltage regulator 41 to a certain value;

[0081] S22: Open the bubble point main valve 33 and the bubble point sub-valve 32 to check whether the gas path is unobstructed;

[0082] S23: Close the bubble point main valve 33 and the bubble point sub-valve 32;

[0083] S24: Open the flux main valve 42 and the flux sub-valve 24 to check whether the flux test pipeline is unobstructed;

[0084] S25: Close the flux main valve 42 and the flux sub-valve 24.

[0085] The specific step S3 includes the following steps:

[0086] S31: Adjust the electronic pressure regulator 41 to 0 MP;

[0087] S32: Open the exhaust valve 22 and the water inlet valve 23;

[0088] S33: Fill water into the water tank 61 through the water inlet valve 23. The water filling height shall not exceed 3 / 4 of the height of the water tank 61 to prevent water overflow.

[0089] S34: Close the water inlet valve 23 and the exhaust valve 22.

[0090] The specific step S4 also includes:

[0091] S41: Install the product to be tested (membrane sample), open the bubble point main valve 33 and the sub-valve, slowly adjust the electronic pressure regulator 41 until the pressure value when the first series of continuous bubbles appears in the liquid storage tank for soaking the membrane sample is the bubble point pressure, then close the bubble point main valve 33 and the bubble point sub-valve 32, and return the electronic pressure regulator 41 to zero.

[0092] S42: Install the product to be tested, open the flux master valve 42 and the flux sub-valve 24, where any one of the sub-valve or both can be opened, slowly adjust the electronic pressure regulator 41 until the pressure value shows a certain value to start testing the membrane flux, and after the test is completed, close the flux master valve 42 and the flux sub-valve 24, and return the electronic pressure regulator 41 to zero. In this step, the electronic pressure regulator count value is 0.1MP.

[0093] There is no particular order for S41 and S42, and they can be performed simultaneously.

[0094] Specifically, step S5 includes the following steps:

[0095] S51: emptying the water storage tank 61, opening the exhaust valve 22 and the drainage control valve 55, draining the water in the water storage tank 61, and closing the corresponding valves after draining;

[0096] S52: Open the flux main valve 42 and the sub-valve, adjust the electronic pressure regulator 41 to a certain value, and drain the water in the pipeline.

[0097] The operation process of the present invention realizes that the bubble point mechanism and the flux test mechanism can be operated simultaneously or separately, making the fiber membrane detection more convenient.

[0098] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A hollow fiber membrane flux test device connected to an external air source, characterized in that: The flux testing device comprises a flux testing mechanism, a bubble point testing mechanism and an adjustment mechanism; The regulating mechanism is connected to the external gas source and is respectively connected to the flux testing mechanism and the bubble point testing mechanism, and the regulating mechanism distributes the power provided by the external gas source to the flux testing mechanism and the bubble point testing mechanism respectively, and adjusts the power size; The regulating mechanism comprises: a first gas transmission unit, a second gas transmission unit and a third gas transmission unit, one end of the first gas transmission unit is connected to the external gas source, and the other end is respectively connected to the second gas transmission unit and the third gas transmission unit, the second gas transmission unit is connected to the flux testing mechanism, and the third gas transmission unit is connected to the bubble point testing mechanism, and the power of the gas source is output to the flux testing mechanism and the bubble point testing mechanism respectively; The flux testing mechanism comprises a water storage unit, a water delivery unit and a flux testing unit, wherein the water storage unit is connected to the water delivery unit and the second gas delivery unit respectively, and the water delivery unit is also connected to the flux testing unit; The bubble point test mechanism comprises a bubble point test unit and a bubble point test control unit, the bubble point test unit is connected to the third gas delivery unit, and the bubble point test control unit is arranged on the third gas delivery unit; The first gas delivery unit includes a first gas pipe and a pressure regulating component, one end of the first gas pipe is connected to the external gas source, and the other end is respectively connected to the second gas delivery unit and the third gas delivery unit, and the pressure regulating component is arranged on the first gas pipe; The second gas transmission unit includes a second gas pipe and a flux control component, one end of the second gas pipe is connected to the first gas pipe, and the other end is connected to the water storage unit, and the flux control component is arranged on the second gas pipe; The third gas transmission unit includes a third air pipe and a bubble point control component, one end of the third air pipe is connected to the first air pipe, and the other end includes at least one bronchus, the bronchus is connected to the bubble point testing mechanism, and the bubble point control component is arranged on the third air pipe to control the opening and closing of the third air pipe; The water storage unit includes a water storage tank, a water inlet assembly and an exhaust assembly, wherein the water storage tank includes a water inlet connected to the water inlet assembly, a water outlet connected to the water delivery unit, an air inlet connected to the second air pipe and an exhaust outlet connected to the exhaust assembly; The water delivery unit comprises a first water delivery pipeline, a first drainage pipeline and a plurality of second water delivery pipelines, wherein one end of the first water delivery pipeline is connected to the water outlet, and the other end is connected to the second water delivery pipeline, one end of the first drainage pipeline is connected to the first water delivery pipeline, and the other end is connected to the outside for drainage, the first drainage pipeline is provided with a drainage control valve for controlling the opening and closing of the first drainage pipeline, and the other end of the second water delivery pipeline is connected to the flux testing unit; The flux test unit includes a flux regulating member and a flux test assembly, wherein the flux regulating member and the flux test assembly correspond to the second water pipeline one by one, respectively, the flux regulating member is arranged in the corresponding second water pipeline, and the flux test assembly is connected to the corresponding second water pipeline; The bubble point test unit includes a bubble point adjustment member and a bubble point test assembly. The number of the bubble point adjustment members and the bubble point test assembly corresponds to the number of the bronchi. The bubble point adjustment member is arranged on the corresponding bronchi, and the bubble point test assembly is connected to the corresponding bronchial outlet.

2. The hollow fiber membrane flux testing device according to claim 1, characterized in that: It also includes a box body, the bubble point test mechanism, the flux test mechanism and the adjustment mechanism are all arranged in the box body, the box body also includes a water circulation chamber, the bubble point test component and the flux test component are both arranged above the water circulation chamber, and the water circulation chamber is provided with a plurality of water inlet holes, a second drainage pipe connected with the first drainage pipe is arranged in the water circulation chamber, and the second drainage pipe is arranged between the water outlet of the first drainage pipe and the drainage control valve, so as to directly discharge the water used for the test.

3. A working method of the hollow fiber membrane flux testing device according to claim 1 or 2, characterized in that: Includes steps: S1: Test whether the adjustment mechanism, bubble point test mechanism and flux test mechanism are unobstructed; S2: Flux test water injection; S3: exhaust of flux test pipeline; S4: Perform bubble point and / or flux test; S5: Equipment emptying.

4. The working method of the hollow fiber membrane flux testing device according to claim 3 is characterized in that: The step S4 specifically includes: S41: Install the membrane sample to be tested, open the bubble point main valve and sub-valve, slowly adjust the electronic pressure regulator until the pressure value when the first series of continuous bubbles appears in the liquid storage tank where the membrane sample is immersed is the bubble point pressure, then close the bubble point main valve and bubble point sub-valve, and return the electronic pressure regulator to zero; S42: Install the product to be tested, open the flux master valve and flux sub-valve, slowly adjust the electronic pressure regulator until the pressure value displayed is a certain value to start testing the membrane flux. After the test is completed, close the flux master valve and flux sub-valve, and return the electronic pressure regulator to zero.

5. The working method of the hollow fiber membrane flux testing device according to claim 4, characterized in that: S41 and S42 can be performed in any order and can be performed simultaneously.

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