Performance testing device for hollow fiber membrane for drinking water treatment
By setting up multiple test pipelines and valves in the hollow fiber membrane performance testing device, compatibility between internal and external membrane testing is achieved, solving the problem of cumbersome testing procedures in existing technologies and realizing rapid and accurate testing of hollow fiber membrane performance.
Patent Information
- Application Number
- CN202423231948.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing hollow fiber membrane performance testing devices can only perform internal or external membrane testing, resulting in cumbersome testing procedures and making it difficult to meet the requirements for efficient testing in the production process.
A performance testing device for hollow fiber membranes used in drinking water treatment was designed. By setting multiple test pipelines and valves on the membrane module sealing device, compatibility between in-membrane and out-of-membrane testing is achieved, enabling separate testing of the flux, rejection rate, and bubble point performance of the hollow fiber membrane.
It improves the timeliness and accuracy of hollow fiber membrane testing, adapts to hollow fiber membranes of different specifications, and meets the rapid testing needs in the production process.
Smart Images
Figure CN223615700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hollow fiber membrane performance testing technology, and in particular to a hollow fiber membrane performance testing device for drinking water treatment. Background Technology
[0002] With the rapid development of the national economy and the continuous improvement of people's living standards, the requirements for environmental safety, especially water environment safety, are becoming increasingly stringent. Although the concentrations of emerging pollutants such as endocrine disruptors, pharmaceuticals and personal care products, perfluorinated compounds, microcystins, and antibiotics in water bodies are low, their complex composition, poor biodegradability, and significant potential hazards are all significant. The presence of antibiotics in drinking water could lead to antibiotic resistance in the near future, thereby weakening the effectiveness of treatments for diseases.
[0003] To achieve more stable and safer effluent quality, membrane water treatment technologies are increasingly being adopted in wastewater and drinking water treatment processes, with hollow fiber ultrafiltration / microfiltration membranes becoming increasingly widely used. As hollow fiber membrane production continues to increase, strict quality control during production places increasingly higher demands on rapid performance testing technologies for hollow fiber membranes. The faster the membrane performance testing, the more responsive the quality control during production, and the more stable the membrane's performance and quality.
[0004] Hollow fiber ultrafiltration / microfiltration membrane performance testing includes in-membrane testing and out-of-membrane testing. However, existing testing equipment can usually only perform in-membrane testing or out-of-membrane testing separately, which leads to cumbersome testing procedures and makes it difficult to meet the high-efficiency testing requirements in the production process. Utility Model Content
[0005] The purpose of this invention is to provide a hollow fiber membrane performance testing device for drinking water treatment, which is compatible with both in-membrane and out-of-membrane testing of hollow fiber membranes.
[0006] To solve the above-mentioned technical problems, this utility model provides a hollow fiber membrane performance testing device for drinking water treatment, including a membrane module sealing device, a liquid source, a storage container and a gas source;
[0007] The membrane module sealing device is provided with an upper interface and is connected to the liquid source through a first test pipeline, so that the test liquid is introduced into the hollow fiber membrane through the upper interface.
[0008] The membrane module sealing device is provided with an upper interface and is connected to the liquid source through a second test pipeline, so that the test liquid is introduced into the outside of the hollow fiber membrane through the upper interface.
[0009] The membrane module sealing device is provided with a lower interface and is connected to the liquid source through a third test pipeline, so that the test liquid outside the membrane can flow back to the liquid source through the lower interface;
[0010] The membrane module sealing device is further provided with a lower side outlet and a lower end outlet; the lower side outlet can introduce the external test liquid into the storage container, and the lower end outlet can introduce the internal test liquid into the storage container;
[0011] The gas source is connected to the upper interface of the membrane module sealing device through a fourth test pipeline, which introduces high-pressure gas into the hollow fiber membrane.
[0012] Preferably, the membrane module sealing device includes an upper housing, a middle housing, and a lower housing; the upper housing and the lower housing are respectively connected to both ends of the middle housing;
[0013] An upper sealing end is installed inside the upper housing, and a lower sealing end is installed inside the lower housing. The two ends of the hollow fiber membrane are held by the upper sealing end and the lower sealing end for subsequent testing.
[0014] Preferably, both ends of the middle shell are threaded and are detachably threaded to the upper shell and the lower shell, so that different specifications of hollow fiber membranes can be adapted by replacing the middle shell of different lengths.
[0015] Preferably, both the upper sealing end and the lower sealing end are provided with hollow needles; the upper interface and the lower outlet are respectively connected to the interior of the hollow fiber membrane through the hollow needles.
[0016] Preferably, a first valve is installed on the first test pipeline, a second valve is installed on the second test pipeline, a third valve is installed on the third test pipeline, and a fourth valve is installed on the fourth test pipeline.
[0017] Preferably, when the first valve, the fourth valve, the lower outlet, and the lower side outlet are closed, and the second valve and the third valve are open, the test liquid in the liquid source is introduced into the outside of the hollow fiber membrane through the upper interface under the action of the power pump, and then flows back to the liquid source through the lower interface, thereby performing an external pressure cross-flow filtration test on the hollow fiber membrane to test the flux and antibiotic rejection rate of the hollow fiber membrane.
[0018] Preferably, when the first valve, third valve, fourth valve, and lower outlet are closed, and the second valve is open, the test liquid in the liquid source is introduced into the outside of the hollow fiber membrane through the upper interface under the action of the power pump, and then introduced into the storage container through the lower outlet, thereby performing an external pressure dead end filtration test on the hollow fiber membrane to test the flux and antibiotic rejection rate of the hollow fiber membrane.
[0019] Preferably, when the second valve, third valve, fourth valve and lower outlet are closed, and the first valve is open, the test liquid in the liquid source is introduced into the hollow fiber membrane through the upper interface under the action of the power pump, and then introduced into the storage container through the lower outlet, thereby performing an internal pressure filtration test on the hollow fiber membrane to test the flux and antibiotic rejection rate of the hollow fiber membrane.
[0020] Preferably, when the first valve, the third valve, and the lower outlet are closed, and the second valve is open, the test liquid in the liquid source is filled to the outside of the hollow fiber membrane through the upper interface under the action of the power pump. Then, the fourth valve is opened and high-pressure gas is introduced into the hollow fiber membrane by the gas source. The bubble point of the hollow fiber membrane is tested by observing the bubbles on the surface of the hollow fiber membrane and the pressure gauge of the gas source.
[0021] Preferably, the liquid source and the storage container are each equipped with an ultraviolet spectrophotometer to detect the antibiotic concentration in the test liquid in the liquid source and the storage container in real time.
[0022] Compared with the prior art, the beneficial effects of this utility model are:
[0023] 1. The hollow fiber membrane performance testing device for drinking water treatment can perform external pressure and internal pressure tests on the hollow fiber membrane by setting a first test pipeline, a second test pipeline, a third test pipeline and a fourth test pipeline on the membrane module sealing device, thereby testing the flux, rejection rate and bubble point performance of the hollow fiber membrane respectively, improving the timeliness and accuracy of hollow fiber membrane testing;
[0024] 2. The upper shell, middle shell, and lower shell of the membrane module sealing device in this hollow fiber membrane performance testing device for drinking water treatment are detachably connected. By replacing the middle shell of different lengths, it can be adapted to test hollow fiber membranes of different specifications. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the hollow fiber membrane performance testing device for drinking water treatment provided by this utility model;
[0026] Figure 2 This is a structural schematic diagram of the membrane module sealing device provided by this utility model.
[0027] In the diagram: 1. Membrane module sealing device; 2. Liquid source; 3. Storage container; 4. Gas source; 5. First test line; 6. Second test line; 7. Third test line; 8. Fourth test line; 9. First valve; 10. Second valve; 11. Third valve; 12. Fourth valve; 13. Power pump; 14. Ultraviolet spectrophotometer; 100. Hollow fiber membrane; 101. Upper shell; 102. Middle shell; 103. Lower shell; 104. Upper sealing end; 105. Lower sealing end; 106. Hollow needle. Detailed Implementation
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example
[0031] This utility model provides a hollow fiber membrane performance testing device for drinking water treatment. Please refer to [link / reference]. Figure 1The system includes a membrane module sealing device 1, a liquid source 2, a storage container 3, and a gas source 4. The membrane module sealing device 1 has an upper interface and is connected to the liquid source 2 via a first test line 5, allowing test liquid to be introduced into the hollow fiber membrane through the upper interface. The membrane module sealing device 1 also has an upper side interface and is connected to the liquid source 2 via a second test line 6, allowing test liquid to be introduced into the outside of the hollow fiber membrane through the upper interface. The membrane module sealing device 1 has a lower side interface and is connected to the liquid source 2 via a third test line 7, allowing external test liquid to flow back into the liquid source 2 through the lower side interface. The membrane module sealing device 1 also has a lower side outlet and a lower end outlet. The lower side outlet allows external test liquid to be introduced into the storage container 3, and the lower end outlet allows internal test liquid to be introduced into the storage container 3. The gas source 4 is connected to the upper interface of the membrane module sealing device 1 via a fourth test line 8, allowing high-pressure gas to be introduced into the hollow fiber membrane.
[0032] For details, please refer to the following: Figure 2 The membrane module sealing device 1 includes an upper shell 101, a middle shell 102, and a lower shell 103; the upper shell 101 and the lower shell 103 are respectively connected to both ends of the middle shell 102; an upper sealing end 104 is installed inside the upper shell 101, and a lower sealing end 105 is installed inside the lower shell 103. The two ends of the hollow fiber membrane 100 are clamped by the upper sealing end 104 and the lower sealing end 105 for subsequent testing.
[0033] Furthermore, both ends of the middle shell 102 are threaded and are detachably threaded to the upper shell 101 and the lower shell 103, so that different specifications of hollow fiber membranes 100 can be adapted by replacing the middle shell 102 of different lengths.
[0034] Furthermore, both the upper sealing end 104 and the lower sealing end 105 are provided with hollow needles 106; the upper end interface and the lower end outlet are respectively connected to the interior of the hollow fiber membrane 100 through the hollow needles 106.
[0035] For details, please continue reading. Figure 1 A first valve 9 is installed on the first test pipeline 5, a second valve 10 is installed on the second test pipeline 6, a third valve 11 is installed on the third test pipeline 7, and a fourth valve 12 is installed on the fourth test pipeline 8.
[0036] In this embodiment, when the first valve 9, the fourth valve 12, the lower outlet, and the lower side outlet are closed, while the second valve 10 and the third valve 11 are open, the test liquid in the liquid source 2 is introduced into the outside of the hollow fiber membrane 100 through the upper interface under the action of the power pump 13, and then flows back to the liquid source 2 through the lower interface, thereby performing an external pressure cross-flow filtration test on the hollow fiber membrane 100 to test the flux and antibiotic rejection rate of the hollow fiber membrane 100.
[0037] In this embodiment, when the first valve 9, the third valve 11, the fourth valve 12 and the lower outlet are closed, and the second valve 10 is open, the test liquid in the liquid source 2 is introduced into the outside of the hollow fiber membrane 100 through the upper interface under the action of the power pump 13, and then introduced into the storage container 3 through the lower outlet, thereby performing an external pressure dead end filtration test on the hollow fiber membrane 100 to test the flux and antibiotic rejection rate of the hollow fiber membrane 100.
[0038] In this embodiment, when the second valve 10, the third valve 11, the fourth valve 12 and the lower outlet are closed, and the first valve 9 is open, the test liquid in the liquid source 2 is introduced into the hollow fiber membrane 100 through the upper interface under the action of the power pump 13, and then introduced into the storage container 3 through the lower outlet, thereby performing an internal pressure filtration test on the hollow fiber membrane 100 to test the flux and antibiotic rejection rate of the hollow fiber membrane 100.
[0039] In this embodiment, when the first valve 9, the third valve 11 and the lower outlet are closed, and the second valve 10 is open, the test liquid in the liquid source 2 is filled to the outside of the hollow fiber membrane 100 through the upper interface under the action of the power pump 13. Then, the fourth valve 12 is opened and the high-pressure gas is introduced into the hollow fiber membrane 100 by the gas source 4. The bubble point of the hollow fiber membrane 100 is tested by observing the bubbles on the surface of the hollow fiber membrane 100 and the pressure gauge of the gas source 4.
[0040] Specifically, the liquid source 2 and the storage container 3 are respectively equipped with ultraviolet spectrophotometers 14 to detect the antibiotic concentration of the test liquid in the liquid source 2 and the storage container 3 in real time.
[0041] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.
Claims
1. A device for testing the performance of hollow fiber membranes for drinking water treatment, characterized in that, It includes a membrane module sealing device (1), a liquid source (2), a storage container (3), and a gas source (4); The membrane module sealing device (1) is provided with an upper interface and is connected to the liquid source (2) through the first test pipeline (5) to introduce the test liquid into the hollow fiber membrane through the upper interface; The membrane module sealing device (1) is provided with an upper interface and is connected to the liquid source (2) through the second test pipeline (6) to introduce the test liquid into the outside of the hollow fiber membrane through the upper interface; The membrane module sealing device (1) is provided with a lower interface and is connected to the liquid source (2) through a third test pipeline (7), so that the test liquid outside the membrane can flow back to the liquid source (2) through the lower interface; The membrane module sealing device (1) is also provided with a lower side outlet and a lower end outlet; the lower side outlet can introduce the external test liquid into the storage container (3), and the lower end outlet can introduce the internal test liquid into the storage container (3); The gas source (4) is connected to the upper interface of the membrane module sealing device (1) through the fourth test pipeline (8) to introduce high-pressure gas into the hollow fiber membrane.
2. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 1, characterized in that, The membrane module sealing device (1) includes an upper shell (101), a middle shell (102), and a lower shell (103); the upper shell (101) and the lower shell (103) are respectively connected to both ends of the middle shell (102); An upper sealing end (104) is installed inside the upper housing (101), and a lower sealing end (105) is installed inside the lower housing (103). The two ends of the hollow fiber membrane (100) are clamped by the upper sealing end (104) and the lower sealing end (105) for subsequent testing.
3. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 2, characterized in that, Both ends of the middle shell (102) are threaded and are detachably threaded to the upper shell (101) and the lower shell (103). Different specifications of hollow fiber membranes (100) can be adapted by replacing the middle shell (102) of different lengths.
4. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 3, characterized in that, Both the upper sealing end (104) and the lower sealing end (105) are provided with hollow needles (106); the upper end interface and the lower end outlet are respectively connected to the interior of the hollow fiber membrane (100) through the hollow needles (106).
5. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 4, characterized in that, A first valve (9) is installed on the first test pipeline (5), a second valve (10) is installed on the second test pipeline (6), a third valve (11) is installed on the third test pipeline (7), and a fourth valve (12) is installed on the fourth test pipeline (8).
6. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 5, characterized in that, When the first valve (9), the fourth valve (12), the lower outlet, and the lower side outlet are closed, and the second valve (10) and the third valve (11) are open, the test liquid in the liquid source (2) is introduced into the outside of the hollow fiber membrane (100) through the upper interface under the action of the power pump (13), and then flows back to the liquid source (2) through the lower interface, thereby performing an external pressure cross-flow filtration test on the hollow fiber membrane (100) to test the flux and antibiotic rejection rate of the hollow fiber membrane (100).
7. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 5, characterized in that, When the first valve (9), the third valve (11), the fourth valve (12) and the lower outlet are closed, and the second valve (10) is opened, the test liquid in the liquid source (2) is introduced into the outside of the hollow fiber membrane (100) through the upper interface under the action of the power pump (13), and then introduced into the storage container (3) through the lower outlet, so as to perform the dead-end filtration test on the hollow fiber membrane (100) to test the flux and antibiotic rejection rate of the hollow fiber membrane (100).
8. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 5, characterized in that, When the second valve (10), the third valve (11), the fourth valve (12) and the lower outlet are closed, and the first valve (9) is open, the test liquid in the liquid source (2) is introduced into the hollow fiber membrane (100) through the upper interface under the action of the power pump (13), and then introduced into the storage container (3) through the lower outlet, so as to perform membrane pressure filtration test on the hollow fiber membrane (100) to test the flux and antibiotic rejection rate of the hollow fiber membrane (100).
9. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 5, characterized in that, When the first valve (9), the third valve (11) and the lower outlet are closed, and the second valve (10) is opened, the test liquid in the liquid source (2) is filled into the outside of the hollow fiber membrane (100) through the upper interface under the action of the power pump (13). Then the fourth valve (12) is opened and the high-pressure gas is introduced into the hollow fiber membrane (100) by the gas source (4). The bubble point of the hollow fiber membrane (100) is tested by observing the bubbles on the surface of the hollow fiber membrane (100) and the pressure gauge of the gas source (4).
10. The hollow fiber membrane performance testing device for drinking water treatment as described in claim 5, characterized in that, The liquid source (2) and the storage container (3) are respectively equipped with ultraviolet spectrophotometers (14) to detect the antibiotic concentration of the test liquid in the liquid source (2) and the storage container (3) in real time.