Multipurpose filter test platform and test method thereof
By designing a multi-purpose filter test platform, integrating public engineering gas sources, pressure storage tanks and multiple test components, the existing filter test devices are solved, and efficient and flexible filter testing is achieved, reducing costs and error risks.
Patent Information
- Application Number
- CN202510090483.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-04-25
AI Technical Summary
The existing filter testing devices lack standardization, take a long time to operate, and are inefficient, and cannot perform multiple sets of experiments simultaneously, which increases labor costs and error risks, and poor device flexibility.
A multi-purpose filter testing platform is designed, including public works gas sources, pressure storage tanks, multiple reversing valves and control valves, as well as filterability testing components, membrane wire water flux testing components and hollow fiber filter testing components, which connect these components through pipelines to achieve the integration of multiple testing methods.
Improve work efficiency, reduce the risk of errors for operators, ensure the parallelism of multiple sets of experiments, reduce consumables and labor costs, and improve the flexibility of the device.
Smart Images
Figure CN119880735A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of filter testing, and in particular to a multi-purpose filter testing platform and a testing method thereof. Background Art
[0002] The downstream separation and purification of the biopharmaceutical industry cannot be separated from the full range of filtration products from deep filtration to terminal filters. Filtration products play a vital role in the entire biopharmaceutical industry. For Party A: the selection of filters is required for later scale-up, such as comparative data of membrane materials from different companies for the same liquid, and the selection of filters requires small-scale filterability experiments; for Party B: the early research and development tests of filter products require a large amount of experimental data as support, and the initial personnel costs, consumables and other investments need to be considered. At present, an experimental test device meets one experimental requirement, so DIY and other means are used to build different experimental requirements. For example, filterability testing requires the construction of a filterability device, and hollow fiber testing requires the construction of a tangential flow device.
[0003] However, the above test methods have the following defects: 1) There is no standardized experimental device, and operators need to use it as they like, which makes the entire experimental process time-consuming and inefficient; 2) It is impossible to carry out multiple groups of experiments at the same time, and they can only be done in batches. There are many variables, resulting in low parallelism of experimental data; 3) Multiple groups of experiments in batches will cause fatigue to operators, thereby increasing the risk of errors; 4) Pre-development requires a large amount of data as support, which requires more experimenters to operate, increasing labor costs; 5) One device can only meet one experimental requirement, such as building a filterability device that can only perform filterability experiments, and the flexibility of the experimental device is poor; 6) The cost of consumables increases. During the experimental operation, for example, disc filters are used and thrown away for multiple groups of experiments, which increases costs. Therefore, the above problems need to be solved urgently. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a multi-purpose filter testing platform and a testing method thereof, which solves the problem that building a device can only meet one experimental requirement. Different tests can be tested, saving time and effort, and having high flexibility, thereby improving work efficiency and reducing the risk of operator error.
[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a multi-purpose filter test platform of the present invention, its innovation point is: it includes a public engineering gas source, a pressure storage tank, a reversing valve I, a control valve I, a control valve II, a control valve III, a reversing valve V, a control valve VIII, a filterability test assembly, a membrane water flux test assembly and a hollow fiber filter test assembly; the reversing valve I and the reversing valve V are both two-position three-way electromagnetic reversing valves, and the public engineering gas source is connected to the working port A of the reversing valve I through a pipeline through the pressure storage tank, and the working port T of the reversing valve I is respectively connected to the control valve I, the control valve II, and the control valve III through a pipeline. And one end of the control valve VIII is connected, and the other end of the control valve VIII is connected to the working port B of the reversing valve I through a pipeline via a hollow fiber filter test assembly, and then a hollow fiber filter optimization test is performed; the other end of the control valve III is connected to the working port T of the reversing valve V through a pipeline, and the other end of the control valve I, the other end of the control valve II and the working port A of the reversing valve V are respectively connected to the corresponding filterability test assembly through pipelines, and then a filterability test is performed; the working port B of the reversing valve V is connected to the membrane fiber water flux test assembly through a pipeline, and then a membrane fiber water flux test is performed.
[0006] Preferably, it also includes a pressure regulating valve and a pressure sensor I; a pressure regulating valve and a pressure sensor I are also provided in sequence and spaced apart on the pipeline between the public engineering gas source and the pressure storage tank, and the pressure sensor I is arranged on a side close to the pressure storage tank, so that the gas flow entering the pressure storage tank is controlled by the cooperation of the pressure regulating valve and the pressure sensor I.
[0007] Preferably, the control valve I, control valve II, control valve III and control valve VIII are all two-position two-way electromagnetic reversing valves.
[0008] Preferably, the filterability test assembly includes a reversing valve II, a reversing valve III, a reversing valve IV, a flat filter I, a flat filter II, a flat filter III, a control valve IV, a control valve V, a control valve VI, a beaker I, a beaker II and a beaker III; the reversing valve II, the reversing valve III and the reversing valve IV are all two-position three-way electromagnetic reversing valves, and the control valve IV, the control valve V and the control valve VI are all two-position two-way electromagnetic reversing valves; the other end of the control valve I is connected to the inlet R of the reversing valve II through a pipeline, and the exhaust port P of the reversing valve II is connected to the outside, and its working Port A is connected to the beaker I through a pipeline in sequence through the flat filter I and the control valve IV; the other end of the control valve II is connected to the inlet R of the reversing valve III through a pipeline, and the exhaust port P of the reversing valve III is connected to the outside world, and its working port A is connected to the beaker II through a pipeline in sequence through the flat filter II and the control valve V; the working port A of the reversing valve V is connected to the inlet R of the reversing valve IV through a pipeline, and the exhaust port P of the reversing valve IV is connected to the outside world, and its working port A is connected to the beaker III through a pipeline in sequence through the flat filter III and the control valve VI.
[0009] Preferably, it also includes a pressure sensor II, a pressure sensor III and a pressure sensor IV; the pipeline located between the control valve I and the reversing valve II is also connected with a pressure sensor II, and the pressure at the upstream inlet of the flat filter I is monitored by the pressure sensor II; the pipeline located between the control valve II and the reversing valve III is also connected with a pressure sensor III, and the pressure at the upstream inlet of the flat filter II is monitored by the pressure sensor III; the pipeline located between the reversing valve V and the reversing valve IV is also connected with a pressure sensor IV, and the pressure at the upstream inlet of the flat filter III is monitored by the pressure sensor IV.
[0010] Preferably, the membrane silk water flux test assembly includes a pressure sensor V, a pressure sensor VI, a three-way joint I, a three-way joint II, a control valve VII and a beaker IV; the three-way joint I and the three-way joint II are arranged in parallel with each other at intervals on the left and right, and the second interfaces of the two are both arranged downward; the working port B of the reversing valve V is connected to the first interface of the three-way joint I through a pipeline, and the third interface of the three-way joint I is connected to the pressure sensor V through a pipeline; the control valve VII is a two-position two-way electromagnetic reversing valve , and one end of it is connected to the outside world; the other end of the control valve Ⅶ is connected to the first interface of the three-way joint II through a pipeline, and the third interface of the three-way joint II is connected to the pressure sensor Ⅵ through a pipeline; one end of the membrane filament to be tested is connected to the second interface of the three-way joint I, and the other end is connected to the second interface of the three-way joint II, and a beaker IV is provided directly below the middle section of the membrane filament to be tested, and then the water flux of the membrane filament is tested by dripping the feed liquid from the membrane filament to be tested into the beaker IV.
[0011] Preferably, the hollow fiber filter test assembly includes a magnetic stirrer, a beaker V, a pump I, a three-way joint III, a pressure sensor VII, a hollow fiber filter, a three-way joint IV, a pressure sensor VIII, a regulating valve, a three-way joint V, a pressure sensor IX, a pump II, a beaker VI and a control valve IX; the beaker V is arranged on the magnetic stirrer, and the material liquid in the beaker V is stirred by the magnetic stirrer; the working port B of the reversing valve I is connected to the beaker V through a pipeline via the pump I, and the other end of the control valve VIII is connected to the inlet end of the hollow fiber filter through a pipeline via the three-way joint III, and a pressure sensor VII is also connected to the third interface of the three-way joint III, the pressure sensor VII is electrically connected to the pump I, and the pump I is connected to the inlet end of the hollow fiber filter through the three-way joint III. The feed liquid in beaker V is pumped into the hollow fiber filter; the reflux end of the hollow fiber filter is connected to the beaker V through a pipeline through a three-way joint IV and a regulating valve in sequence, and a pressure sensor VIII is also connected to the third interface of the three-way joint IV, and the pressure sensor VIII is electrically connected to the regulating valve, so that the feed liquid in the hollow fiber filter is refluxed into the beaker V; the control valve IX is a two-position two-way electromagnetic reversing valve, and the permeation end of the hollow fiber filter is connected to the beaker VI through a pipeline through a control valve IX, a three-way joint V, and a pump II in sequence, and a pressure sensor IX is also connected to the third interface of the three-way joint V, the pump II is electrically connected to the pressure sensor IX, and the feed liquid permeated in the hollow fiber filter flows into the beaker VI.
[0012] Preferably, a balance is also included; the beaker I, beaker II, beaker III, beaker IV and beaker VI are placed on the corresponding balance respectively, and the weight of the corresponding beaker I, beaker II, beaker III, beaker IV and beaker VI is measured by the balance.
[0013] The invention discloses a method for testing a multi-purpose filter testing platform, which is innovative in that it comprises the following steps: (1) Filterability test (1.1) First, determine the number of membranes to be tested according to the actual situation. Take three as an example, and place the three cut membranes to be tested into flat filter I, flat filter II and flat filter III respectively; (1.2) Then open control valves I, II and III, and close control valves IV, V, VI and VIII; then move the valve core of reversing valve I to the left, so that the working port A of reversing valve I is connected to its working port T; at the same time, move the valve core of reversing valve V to the left, so that the working port A of reversing valve V is connected to its working port T; and move the valve core of reversing valve II to the left, so that the inlet R of reversing valve II is connected to its working port A; move the valve core of reversing valve III to the left, so that the inlet R of reversing valve III is connected to its working port A; move the valve core of reversing valve IV to the left, so that the inlet R of reversing valve IV is connected to its working port A; (1.3) Then the public engineering gas source is opened, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve and the pressure sensor Ⅰ, so that the material in the pressure storage tank is pressed out and flows to the flat filter Ⅰ, flat filter Ⅱ and flat filter Ⅲ respectively through the reversing valve Ⅰ; (1.4) 2 minutes later, the upstream of flat filter I, flat filter II and flat filter III are filled with liquid. Then the valve core of reversing valve II is moved to the right, so that the working port A of reversing valve II is connected with its exhaust port P; the valve core of reversing valve III is moved to the right, so that the working port A of reversing valve III is connected with its exhaust port P; the valve core of reversing valve IV is moved to the right, so that the working port A of reversing valve IV is connected with its exhaust port P; the corresponding flat filter I, flat filter II and flat filter III can be exhausted through reversing valve II, reversing valve III and reversing valve IV respectively; (1.5) After exhausting for 5 seconds, first close control valves I, II and III, and automatically adjust the pressure to the required pressure for the test through the pressure regulating valve. After waiting for 5 minutes to ensure that the pressure is stable, move the valve core of reversing valve II to the left, so that the inlet R of reversing valve II is connected to its working port A; move the valve core of reversing valve III to the left, so that the inlet R of reversing valve III is connected to its working port A; move the valve core of reversing valve IV to the left, so that the inlet R of reversing valve IV is connected to its working port A; (1.6) Then open control valves Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ, and the liquid downstream of flat filter Ⅰ, flat filter Ⅱ and flat filter Ⅲ flows into corresponding beaker Ⅰ, beaker Ⅱ and beaker Ⅲ respectively. The pressure in the corresponding pipeline is recorded by pressure sensor Ⅱ, pressure sensor Ⅲ and pressure sensor Ⅳ, and the entire test time and the weight of beaker Ⅰ, beaker Ⅱ and beaker Ⅲ are recorded. The experimental test is finished; (2) Water flux test of membrane fibers (2.1) First, connect one end of the membrane filament to be tested to the second interface of the three-way connector I, and the other end of the membrane filament to the second interface of the three-way connector II; (2.2) Then open control valve III and close control valves I, II, VII and VIII; then move the valve core of reversing valve I to the left, so that the working port A of reversing valve I is connected to its working port T; at the same time, move the valve core of reversing valve V to the right, so that the working port B of reversing valve V is connected to its working port T; (2.3) Then the public engineering gas source is turned on, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve and the pressure sensor Ⅰ, so that the material pressure in the pressure storage tank is pressed out and flows to the membrane wire to be tested through the reversing valve Ⅰ, the control valve Ⅲ and the reversing valve Ⅴ in turn; (2.4) After 3 seconds, control valve VII opens and exhausts gas through control valve VII. After exhausting gas, control valve VII closes. First, control valve III is closed, and the pressure is automatically adjusted to the required pressure through the pressure regulating valve. After waiting for 5 minutes to ensure that the pressure is stable, control valve III is opened. (2.5) Then the liquid passes through the membrane to be tested and drips into beaker IV. The pressure in the corresponding pipeline is recorded by pressure sensor V and pressure sensor VI. The entire test time and the weight of beaker IV are also recorded. The experimental test is completed. (3) Hollow fiber filter optimization test (3.1) First, add the liquid to be tested into beaker V, turn on the magnetic stirrer, and measure the weight of beaker V; (3.2) Then open control valve VIII and regulating valve, and close control valves I, II, III and IX; then move the valve core of reversing valve I to the right, so that the working port B of reversing valve I is connected with its working port T; (3.3) Place the hollow fiber column to be tested into the hollow fiber filter; then use pump I to pump the liquid in beaker V into the hollow fiber filter through reversing valve I and control valve VIII in sequence, and then return it to beaker V through the regulating valve to form a cycle; (3.4) When the front end of the hollow fiber filter membrane is filled with the feed liquid, open the control valve IX. At this time, the feed liquid flows out through the permeation end of the hollow fiber filter, and then flows into the beaker VI through the control valve IX and pump Ⅱ in sequence. Then, the pressure in the corresponding pipeline is recorded by the pressure sensor VII, pressure sensor VIII and pressure sensor IX, and the entire test time and the weight of beaker VI are recorded. The experimental test is completed.
[0014] Beneficial effects of the present invention: (1) The present invention solves the problem that building one device can only meet one experimental requirement. It can be used to test different tests, saving time and effort, and has high flexibility, thereby improving work efficiency and reducing the risk of operator error; (2) The present invention ensures the parallelism of multiple groups of experiments and reduces the impact of experimental data caused by human manipulation while ensuring that the variables are the same; (3) The present invention reduces the investment cost of the overall filter consumables and the investment cost of the feed liquid, and also reduces the labor cost of the early research and development. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 The schematic diagram of a multi-purpose filter testing method of the present invention.
[0017] Among them, 1-public engineering gas source; 2-pressure regulating valve; 3-pressure sensor I; 4-pressure storage tank; 5-reversing valve I; 6-control valve I; 7-control valve II; 8-control valve III; 9-pressure sensor II; 10-pressure sensor III; 11-pressure sensor IV; 12-reversing valve II; 13-reversing valve III; 14-reversing valve IV; 15-flat filter I; 16-flat filter II; 17-flat filter III; 18-control valve IV; 19-control valve V; 20-control valve VI; 21-beaker I; 22-beaker II; 23-beaker III; 24-reversing valve Ⅴ; 25-pressure sensor Ⅴ; 26-pressure sensor Ⅵ; 27-three-way connector Ⅰ; 28-three-way connector Ⅱ; 29-control valve Ⅶ; 30-beaker Ⅳ; 31-magnetic stirrer; 32-beaker Ⅴ; 33-pump Ⅰ; 34-control valve Ⅷ; 35-three-way connector Ⅲ; 36-pressure sensor Ⅶ; 37-hollow fiber filter; 38-three-way connector Ⅳ; 39-pressure sensor Ⅷ; 40-regulating valve; 41-three-way connector Ⅴ; 42-pressure sensor Ⅸ; 43-pump Ⅱ; 44-beaker Ⅵ; 45-control valve Ⅸ; 46-balance; 47-membrane wire to be tested. DETAILED DESCRIPTION
[0018] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.
[0019] A multi-purpose filter test platform of the present invention comprises a public engineering gas source, a pressure storage tank 4, a reversing valve I5, a control valve I6, a control valve II7, a control valve III8, a reversing valve V24, a control valve VIII34, a filterability test assembly, a membrane water flux test assembly and a hollow fiber filter test assembly; the specific results are as follows Figure 1As shown, both the reversing valve I5 and the reversing valve V24 are two-position three-way electromagnetic reversing valves, and the public engineering gas source is connected to the working port A of the reversing valve I5 through the pipeline via the pressure storage tank 4, the working port T of the reversing valve I5 is connected to the control valve I6, the control valve II7, the control valve III8 and one end of the control valve VIII34 through the pipeline, and the other end of the control valve VIII34 is connected to the working port B of the reversing valve I5 through the pipeline via the hollow fiber filter test assembly, and then the hollow fiber filter optimization test is performed; the other end of the control valve III8 is connected to the working port T of the reversing valve V24 through the pipeline, and the other end of the control valve I6, the other end of the control valve II7 and the working port A of the reversing valve V24 are connected to the corresponding filterability test assembly through the pipeline, and then the filterability test is performed; the working port B of the reversing valve V24 is connected to the membrane fiber water flux test assembly through the pipeline, and then the membrane fiber water flux test is performed. Among them, control valve I6, control valve II7, control valve III8 and control valve VIII34 are all two-position two-way electromagnetic reversing valves.
[0020] like Figure 1 As shown, a pressure regulating valve 2 and a pressure sensor Ⅰ3 are sequentially connected and arranged in sequence on the pipeline between the public engineering gas source and the pressure storage tank 4, and the pressure sensor Ⅰ3 is arranged on the side close to the pressure storage tank 4, so that the gas flow entering the pressure storage tank 4 is controlled by the cooperation of the pressure regulating valve 2 and the pressure sensor Ⅰ3.
[0021] The filterability test assembly of the present invention comprises a reversing valve II 12, a reversing valve III 13, a reversing valve IV 14, a flat filter I 15, a flat filter II 16, a flat filter III 17, a control valve IV 18, a control valve V 19, a control valve VI 20, a beaker I 21, a beaker II 22, a beaker III 23, a pressure sensor II 9, a pressure sensor III 10 and a pressure sensor IV 11; Figure 1 As shown, the reversing valve II12, the reversing valve III13 and the reversing valve IV14 are all two-position three-way electromagnetic reversing valves, and the control valve IV18, the control valve V19 and the control valve VI20 are all two-position two-way electromagnetic reversing valves; the other end of the control valve I6 is connected to the inlet R of the reversing valve II12 through a pipeline, and the exhaust port P of the reversing valve II12 is connected to the outside, and its working port A is connected to the beaker I21 through a pipeline in sequence through the flat filter I15 and the control valve IV18; the control valve II7 The other end is connected with the inlet R of the reversing valve III13 through a pipeline, and the exhaust port P of the reversing valve III13 is connected with the outside world, and its working port A is connected with the beaker II22 through the pipeline in sequence via the flat filter II16 and the control valve V19; the working port A of the reversing valve V24 is connected with the inlet R of the reversing valve IV14 through a pipeline, and the exhaust port P of the reversing valve IV14 is connected with the outside world, and its working port A is connected with the beaker III23 through the pipeline in sequence via the flat filter III17 and the control valve VI20.
[0022] like Figure 1As shown, a pressure sensor II9 is also connected to the pipeline section between the control valve I6 and the reversing valve II12, and the pressure at the upstream inlet of the flat filter I15 is monitored by the pressure sensor II9; a pressure sensor III10 is also connected to the pipeline section between the control valve II7 and the reversing valve III13, and the pressure at the upstream inlet of the flat filter II16 is monitored by the pressure sensor III10; a pressure sensor IV11 is also connected to the pipeline section between the reversing valve V24 and the reversing valve IV14, and the pressure at the upstream inlet of the flat filter III17 is monitored by the pressure sensor IV11.
[0023] The membrane water flux test assembly of the present invention comprises a pressure sensor V25, a pressure sensor VI26, a three-way connector I27, a three-way connector II28, a control valve VII29 and a beaker IV30; Figure 1 As shown, the three-way connector I27 and the three-way connector II28 are arranged in parallel with each other at intervals on the left and right, and the second interfaces of the two are arranged downward; the working port B of the reversing valve V24 is connected to the first interface of the three-way connector I27 through a pipeline, and the third interface of the three-way connector I27 is connected to the pressure sensor V25 through a pipeline; the control valve VII29 is a two-position two-way electromagnetic reversing valve, and one end of the control valve VII29 is connected to the outside world; the other end of the control valve VII29 is connected to the first interface of the three-way connector II28 through a pipeline, and the third interface of the three-way connector II28 is connected to the pressure sensor VI26 through a pipeline; one end of the membrane filament 47 to be tested is connected to the second interface of the three-way connector I27, and the other end is connected to the second interface of the three-way connector II28, and a beaker IV30 is provided directly below the middle section of the membrane filament 47 to be tested, and then the water flux test of the membrane filament is carried out by dripping the feed liquid from the membrane filament 47 to be tested into the beaker IV30.
[0024] The hollow fiber filter test assembly of the present invention includes a magnetic stirrer 31, a beaker V32, a pump I33, a three-way connector III35, a pressure sensor VII36, a hollow fiber filter 37, a three-way connector IV38, a pressure sensor VIII39, a regulating valve 40, a three-way connector V41, a pressure sensor IX42, a pump II43, a beaker VI44 and a control valve IX45; Figure 1As shown, beaker V32 is arranged on magnetic stirrer 31, and the material liquid in beaker V32 is stirred by magnetic stirrer 31; working port B of reversing valve I5 is connected to beaker V32 through pipeline via pump I33, and the other end of control valve VIII34 is connected to the inlet end of hollow fiber filter 37 through pipeline via three-way joint III35, and pressure sensor VII36 is also connected to the third interface of three-way joint III35, pressure sensor VII36 is electrically connected to pump I33, and material liquid in beaker V32 is pumped into hollow fiber filter 37 through pump I33; the reflux end of hollow fiber filter 37 is connected to three-way joint IV38, regulating valve 40 in sequence through pipeline. It is connected to beaker V32, and a pressure sensor VIII39 is also connected to the third interface of the three-way connector IV38, and the pressure sensor VIII39 is electrically connected to the regulating valve 40, so that the liquid in the hollow fiber filter 37 flows back to the beaker V32; the control valve IX45 is a two-position two-way electromagnetic reversing valve, and the permeation end of the hollow fiber filter 37 is connected to the beaker VI44 through a pipeline via the control valve IX45, the three-way connector V41, and the pump II43, and a pressure sensor IX42 is also connected to the third interface of the three-way connector V41, the pump II43 is electrically connected to the pressure sensor IX42, and the liquid permeated in the hollow fiber filter 37 flows to the beaker VI44.
[0025] like Figure 1 As shown, beaker I 21 , beaker II 22 , beaker III 23 , beaker IV 30 and beaker VI 44 are placed on corresponding balances 46 , and the weights of the corresponding beaker I 21 , beaker II 22 , beaker III 23 , beaker IV 30 and beaker VI 44 are measured by balances 46 .
[0026] A testing method of a multi-purpose filter testing platform of the present invention, such as Figure 1 As shown, the following steps are included: (1) Filterability test (1.1) First, determine the number of membranes to be tested according to the actual situation. Take three as an example, and put the three cut membranes to be tested into the flat filter I 15, the flat filter II 16 and the flat filter III 17 respectively; (1.2) Then open control valves I6, II7 and III8, and close control valves IV18, V19, VI20 and VIII34; then move the valve core of reversing valve I5 to the left, so that the working port A of reversing valve I5 is connected to its working port T; at the same time, move the valve core of reversing valve V24 to the left, so that the working port A of reversing valve V24 is connected to its working port T; and move the valve core of reversing valve II12 to the left, so that the inlet R of reversing valve II12 is connected to its working port A; move the valve core of reversing valve III13 to the left, so that the inlet R of reversing valve III13 is connected to its working port A; move the valve core of reversing valve IV14 to the left, so that the inlet R of reversing valve IV14 is connected to its working port A; (1.3) Then the public engineering gas source is opened, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve 2 and the pressure sensor Ⅰ3, so that the material pressure in the pressure storage tank 4 is pressed out and flows to the flat filter Ⅰ15, the flat filter Ⅱ16 and the flat filter Ⅲ17 respectively through the reversing valve Ⅰ5; (1.4) 2 minutes later, the upstream of flat filter Ⅰ15, flat filter Ⅱ16 and flat filter Ⅲ17 are filled with liquid, then the valve core of reversing valve Ⅱ12 is moved to the right, so that the working port A of reversing valve Ⅱ12 is connected with its exhaust port P; the valve core of reversing valve Ⅲ13 is moved to the right, so that the working port A of reversing valve Ⅲ13 is connected with its exhaust port P; the valve core of reversing valve Ⅳ14 is moved to the right, so that the working port A of reversing valve Ⅳ14 is connected with its exhaust port P; the corresponding flat filter Ⅰ15, flat filter Ⅱ16 and flat filter Ⅲ17 can be exhausted through reversing valve Ⅱ12, reversing valve Ⅲ13 and reversing valve Ⅳ14 respectively; (1.5) After exhausting for 5 seconds, first close control valves Ⅰ6, Ⅱ7 and Ⅲ8, and automatically adjust the pressure to the required pressure for the test through pressure regulating valve 2. After waiting for 5 minutes to ensure that the pressure is stable, move the valve core of reversing valve Ⅱ12 to the left, so that the inlet R of reversing valve Ⅱ12 is connected to its working port A; move the valve core of reversing valve Ⅲ13 to the left, so that the inlet R of reversing valve Ⅲ13 is connected to its working port A; move the valve core of reversing valve Ⅳ14 to the left, so that the inlet R of reversing valve Ⅳ14 is connected to its working port A; (1.6) Then open control valve I6, control valve II7, control valve III8, control valve IV18, control valve V19 and control valve VI20, and the liquid downstream of flat filter I15, flat filter II16 and flat filter III17 flows into corresponding beaker I21, beaker II22 and beaker III23 respectively. The pressure in the corresponding pipeline is recorded by pressure sensor II9, pressure sensor III10 and pressure sensor IV11, and the entire test time and the weight of beaker I21, beaker II22 and beaker III23 are recorded. The experimental test is completed.
[0027] (2) Water flux test of membrane fibers (2.1) First, one end of the membrane filament 47 to be tested is connected to the second interface of the three-way connector I 27, and the other end thereof is connected to the second interface of the three-way connector II 28; (2.2) Then open the control valve III8, and close the control valves I6, II7, VII29, and VIII34; then move the valve core of the reversing valve I5 to the left, so that the working port A of the reversing valve I5 is connected to its working port T; at the same time, move the valve core of the reversing valve V24 to the right, so that the working port B of the reversing valve V24 is connected to its working port T; (2.3) Then the public engineering gas source is opened, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve 2 and the pressure sensor Ⅰ3, so that the material pressure in the pressure storage tank 4 is pressed out, and then flows to the membrane wire 47 to be tested through the reversing valve Ⅰ5, the control valve Ⅲ8 and the reversing valve Ⅴ24 in turn; (2.4) After 3 seconds, control valve VII29 opens and exhausts gas through control valve VII29. After exhausting gas, control valve VII29 closes. First, control valve III8 is closed, and the pressure is automatically adjusted to the required pressure for the test through pressure regulating valve 2. After waiting for 5 minutes to ensure that the pressure is stable, control valve III8 is opened. (2.5) Then the liquid passes through the membrane filament 47 to be tested and drips into the beaker IV30. The pressure in the corresponding pipeline is recorded by the pressure sensor V25 and the pressure sensor VI26. The entire test time and the weight of the beaker IV30 are also recorded. The experimental test is completed.
[0028] (3) Hollow fiber filter optimization test (3.1) First, add the liquid to be tested into the beaker V32, and at this time, turn on the magnetic stirrer 31, and measure the weight of the beaker V32; (3.2) Then open the control valve VIII 34 and the regulating valve 40, and close the control valves I6, II7, III8 and IX 45; then move the valve core of the reversing valve I5 to the right, so that the working port B of the reversing valve I5 is connected to its working port T; (3.3) The hollow fiber column to be tested is loaded into the hollow fiber filter 37; then the liquid in the beaker V32 is pumped into the hollow fiber filter 37 through the reversing valve I5 and the control valve VIII 34 by the pump I33, and then refluxed into the beaker V32 through the regulating valve 40, thus forming a cycle; (3.4) When the front end of the membrane of the hollow fiber filter 37 is filled with the feed liquid, the control valve IX 45 is opened. At this time, the feed liquid flows out through the permeation end of the hollow fiber filter 37, and then flows into the beaker VI 44 through the control valve IX 45 and the pump II 43 in turn. Then, the pressure in the corresponding pipeline is recorded by the pressure sensor VII 36, the pressure sensor VIII 39 and the pressure sensor IX 42, and the entire test time and the weight of the beaker VI 44 are recorded. The experimental test is completed.
[0029] Before the hollow fiber filter optimization test is performed, the control valve VIII 34 and the regulating valve 40 are opened, and the control valves I6, II7, III8 and IX 45 are closed; then the valve core of the reversing valve I5 is moved to the right, so that the working port B of the reversing valve I5 is connected with its working port T; then the hollow fiber filter 37 needs to be rinsed with purified water, and cleaned with a certain concentration of sodium hydroxide if necessary; after the test, it is cleaned with a certain concentration of sodium hydroxide or sodium hypochlorite until the water flux is restored. If the product is a microfiltration hollow fiber, the permeation end of the hollow fiber filter 37 needs a pump II 43 to control the permeation end flow rate of the hollow fiber filter 37.
[0030] Beneficial effects of the present invention: (1) The present invention solves the problem that building one device can only meet one experimental requirement. It can be used to test different tests, saving time and effort, and has high flexibility, thereby improving work efficiency and reducing the risk of operator error; (2) The present invention ensures the parallelism of multiple groups of experiments and reduces the impact of experimental data caused by human manipulation while ensuring that the variables are the same; (3) The present invention reduces the investment cost of the overall filter consumables and the investment cost of the feed liquid, and also reduces the labor cost of the early research and development.
[0031] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.
Claims
1. A multi-purpose filter testing platform, characterized in that: It includes a public engineering gas source, a pressure storage tank, a reversing valve I, a control valve I, a control valve II, a control valve III, a reversing valve V, a control valve VIII, a filterability test assembly, a membrane water flux test assembly and a hollow fiber filter test assembly; the reversing valve I and the reversing valve V are both two-position three-way electromagnetic reversing valves, and the public engineering gas source is connected to the working port A of the reversing valve I through a pipeline via the pressure storage tank, the working port T of the reversing valve I is connected to one end of the control valve I, the control valve II, the control valve III and the control valve VIII through a pipeline, and the other end of the control valve VIII is connected to the control valve I, the control valve II, the control valve III and the control valve VIII. The first end of the control valve III is connected to the working port B of the reversing valve I through a pipeline via the hollow fiber filter test assembly, and then the hollow fiber filter optimization test is carried out; the other end of the control valve III is connected to the working port T of the reversing valve V through a pipeline, and the other end of the control valve I, the other end of the control valve II and the working port A of the reversing valve V are respectively connected to the corresponding filterability test assembly through pipelines, and then the filterability test is carried out; the working port B of the reversing valve V is connected to the membrane fiber water flux test assembly through a pipeline, and then the membrane fiber water flux test is carried out.
2. A multi-purpose filter testing platform according to claim 1, characterized in that: It also includes a pressure regulating valve and a pressure sensor I; on the pipeline located between the public engineering gas source and the pressure storage tank, a pressure regulating valve and a pressure sensor I are also arranged in sequence and spaced apart, and the pressure sensor I is arranged on a side close to the pressure storage tank, and then the gas flow entering the pressure storage tank is controlled by the cooperation of the pressure regulating valve and the pressure sensor I.
3. A multi-purpose filter testing platform according to claim 2, characterized in that: The control valve I, control valve II, control valve III and control valve VIII are all two-position two-way electromagnetic reversing valves.
4. A multi-purpose filter testing platform according to claim 3, characterized in that: The filterability test assembly includes a reversing valve II, a reversing valve III, a reversing valve IV, a flat filter I, a flat filter II, a flat filter III, a control valve IV, a control valve V, a control valve VI, a beaker I, a beaker II and a beaker III; the reversing valve II, the reversing valve III and the reversing valve IV are all two-position three-way electromagnetic reversing valves, and the control valve IV, the control valve V and the control valve VI are all two-position two-way electromagnetic reversing valves; the other end of the control valve I is connected to the inlet R of the reversing valve II through a pipeline, and the exhaust port P of the reversing valve II is connected to the outside, and its working port A The control valve II is connected to the beaker I through a pipeline in sequence through the flat filter I and the control valve IV; the other end of the control valve II is connected to the inlet R of the reversing valve III through a pipeline, and the exhaust port P of the reversing valve III is connected to the outside world, and its working port A is connected to the beaker II through a pipeline in sequence through the flat filter II and the control valve V; the working port A of the reversing valve V is connected to the inlet R of the reversing valve IV through a pipeline, and the exhaust port P of the reversing valve IV is connected to the outside world, and its working port A is connected to the beaker III through a pipeline in sequence through the flat filter III and the control valve VI.
5. A multi-purpose filter testing platform according to claim 4, characterized in that: It also includes a pressure sensor II, a pressure sensor III and a pressure sensor IV; the pipeline located between the control valve I and the reversing valve II is also connected with a pressure sensor II, and the pressure at the upstream inlet of the flat filter I is monitored by the pressure sensor II; the pipeline located between the control valve II and the reversing valve III is also connected with a pressure sensor III, and the pressure at the upstream inlet of the flat filter II is monitored by the pressure sensor III; the pipeline located between the reversing valve V and the reversing valve IV is also connected with a pressure sensor IV, and the pressure at the upstream inlet of the flat filter III is monitored by the pressure sensor IV.
6. A multi-purpose filter testing platform according to claim 5, characterized in that: The membrane silk water flux test assembly includes a pressure sensor V, a pressure sensor VI, a three-way joint I, a three-way joint II, a control valve VII and a beaker IV; the three-way joint I and the three-way joint II are arranged in parallel with each other at intervals on the left and right, and the second interfaces of the two are arranged downward; the working port B of the reversing valve V is connected to the first interface of the three-way joint I through a pipeline, and the third interface of the three-way joint I is connected to the pressure sensor V through a pipeline; the control valve VII is a two-position two-way electromagnetic reversing valve, and one end of it is connected to the outside; the other end of the control valve VII is connected to the first interface of the three-way joint II through a pipeline, and the third interface of the three-way joint II is connected to the pressure sensor VI through a pipeline; one end of the membrane silk to be tested is connected to the second interface of the three-way joint I, and the other end is connected to the second interface of the three-way joint II, and a beaker IV is provided directly below the middle section of the membrane silk to be tested, and then the water flux test of the membrane silk is carried out by dripping the feed liquid from the membrane silk to be tested into the beaker IV.
7. A multi-purpose filter testing platform according to claim 6, characterized in that: The hollow fiber filter test assembly includes a magnetic stirrer, a beaker V, a pump I, a three-way joint III, a pressure sensor VII, a hollow fiber filter, a three-way joint IV, a pressure sensor VIII, a regulating valve, a three-way joint V, a pressure sensor IX, a pump II, a beaker VI and a control valve IX; the beaker V is arranged on the magnetic stirrer, and the material liquid in the beaker V is stirred by the magnetic stirrer; the working port B of the reversing valve I is connected to the beaker V through a pipeline via the pump I, and the other end of the control valve VIII is connected to the inlet end of the hollow fiber filter through the pipeline via the three-way joint III, and a pressure sensor VII is also connected to the third interface of the three-way joint III, the pressure sensor VII is electrically connected to the pump I, and the beaker is moved by the pump I The feed liquid in V is pumped into the hollow fiber filter; the reflux end of the hollow fiber filter is connected to the beaker V through a pipeline via a three-way joint IV and a regulating valve in sequence, and a pressure sensor VIII is also connected to the third interface of the three-way joint IV, and the pressure sensor VIII is electrically connected to the regulating valve, so that the feed liquid in the hollow fiber filter is refluxed into the beaker V; the control valve IX is a two-position two-way electromagnetic reversing valve, and the permeation end of the hollow fiber filter is connected to the beaker VI through a pipeline via a control valve IX, a three-way joint V, and a pump II in sequence, and a pressure sensor IX is also connected to the third interface of the three-way joint V, the pump II is electrically connected to the pressure sensor IX, and the feed liquid permeated in the hollow fiber filter flows into the beaker VI.
8. A multi-purpose filter testing platform according to claim 7, characterized in that: It also includes a balance; the beaker I, beaker II, beaker III, beaker IV and beaker VI are placed on the corresponding balance respectively, and the weight of the corresponding beaker I, beaker II, beaker III, beaker IV and beaker VI is measured by the balance.
9. The testing method of a multi-purpose filter testing platform according to claim 8, characterized in that The following steps are involved: (1) Filterability test (1.1) First, determine the number of membranes to be tested according to the actual situation. Take three as an example, and place the three cut membranes to be tested into flat filter I, flat filter II and flat filter III respectively; (1.2) Then open control valves I, II and III, and close control valves IV, V, VI and VIII; then move the valve core of reversing valve I to the left, so that the working port A of reversing valve I is connected to its working port T; at the same time, move the valve core of reversing valve V to the left, so that the working port A of reversing valve V is connected to its working port T; and move the valve core of reversing valve II to the left, so that the inlet R of reversing valve II is connected to its working port A; move the valve core of reversing valve III to the left, so that the inlet R of reversing valve III is connected to its working port A; move the valve core of reversing valve IV to the left, so that the inlet R of reversing valve IV is connected to its working port A; (1.3) Then the public engineering gas source is opened, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve and the pressure sensor Ⅰ, so that the material in the pressure storage tank is pressed out and flows to the flat filter Ⅰ, flat filter Ⅱ and flat filter Ⅲ respectively through the reversing valve Ⅰ; (1.4) 2 minutes later, the upstream of flat filter I, flat filter II and flat filter III are filled with liquid. Then the valve core of reversing valve II is moved to the right, so that the working port A of reversing valve II is connected with its exhaust port P; the valve core of reversing valve III is moved to the right, so that the working port A of reversing valve III is connected with its exhaust port P; the valve core of reversing valve IV is moved to the right, so that the working port A of reversing valve IV is connected with its exhaust port P; the corresponding flat filter I, flat filter II and flat filter III can be exhausted through reversing valve II, reversing valve III and reversing valve IV respectively; (1.5) After exhausting for 5 seconds, first close control valves I, II and III, and automatically adjust the pressure to the required pressure for the test through the pressure regulating valve. After waiting for 5 minutes to ensure that the pressure is stable, move the valve core of reversing valve II to the left, so that the inlet R of reversing valve II is connected to its working port A; move the valve core of reversing valve III to the left, so that the inlet R of reversing valve III is connected to its working port A; move the valve core of reversing valve IV to the left, so that the inlet R of reversing valve IV is connected to its working port A; (1.6) Then open control valves Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ, and the liquid downstream of flat filter Ⅰ, flat filter Ⅱ and flat filter Ⅲ flows into corresponding beaker Ⅰ, beaker Ⅱ and beaker Ⅲ respectively. The pressure in the corresponding pipeline is recorded by pressure sensor Ⅱ, pressure sensor Ⅲ and pressure sensor Ⅳ, and the entire test time and the weight of beaker Ⅰ, beaker Ⅱ and beaker Ⅲ are recorded. The experimental test is finished; (2) Water flux test of membrane fibers (2.1) First, connect one end of the membrane filament to be tested to the second interface of the three-way connector I, and the other end of the membrane filament to the second interface of the three-way connector II; (2.2) Then open control valve III and close control valves I, II, VII and VIII; then move the valve core of reversing valve I to the left, so that the working port A of reversing valve I is connected to its working port T; at the same time, move the valve core of reversing valve V to the right, so that the working port B of reversing valve V is connected to its working port T; (2.3) Then the public engineering gas source is turned on, and the pressure is automatically and slowly increased through the cooperation of the pressure regulating valve and the pressure sensor Ⅰ, so that the material pressure in the pressure storage tank is pressed out and flows to the membrane wire to be tested through the reversing valve Ⅰ, the control valve Ⅲ and the reversing valve Ⅴ in turn; (2.4) After 3 seconds, control valve VII opens and exhausts gas through control valve VII. After exhausting gas, control valve VII closes. First, control valve III is closed, and the pressure is automatically adjusted to the required pressure through the pressure regulating valve. After waiting for 5 minutes to ensure that the pressure is stable, control valve III is opened. (2.5) Then the liquid passes through the membrane to be tested and drips into beaker IV. The pressure in the corresponding pipeline is recorded by pressure sensor V and pressure sensor VI. The entire test time and the weight of beaker IV are also recorded. The experimental test is completed. (3) Hollow fiber filter optimization test (3.1) First, add the liquid to be tested into beaker V, turn on the magnetic stirrer, and measure the weight of beaker V; (3.2) Then open control valve VIII and regulating valve, and close control valves I, II, III and IX; then move the valve core of reversing valve I to the right, so that the working port B of reversing valve I is connected with its working port T; (3.3) Place the hollow fiber column to be tested into the hollow fiber filter; then use pump I to pump the liquid in beaker V into the hollow fiber filter through reversing valve I and control valve VIII in sequence, and then return it to beaker V through the regulating valve to form a cycle; (3.4) When the front end of the hollow fiber filter membrane is filled with the feed liquid, open the control valve IX. At this time, the feed liquid flows out through the permeation end of the hollow fiber filter, and then flows into the beaker VI through the control valve IX and pump Ⅱ in sequence. Then, the pressure in the corresponding pipeline is recorded by the pressure sensor VII, pressure sensor VIII and pressure sensor IX, and the entire test time and the weight of beaker VI are recorded. The experimental test is completed.