CN218871804U - Hollow fiber membrane performance detection system - Google Patents
Hollow fiber membrane performance detection system Download PDFInfo
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- CN218871804U CN218871804U CN202222121203.9U CN202222121203U CN218871804U CN 218871804 U CN218871804 U CN 218871804U CN 202222121203 U CN202222121203 U CN 202222121203U CN 218871804 U CN218871804 U CN 218871804U
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Abstract
The utility model relates to a hollow fiber membrane performance detecting system, including membrane module sealing device, water container, pure water flux and entrapment rate detecting element and bubble point pressure detecting element, membrane module sealing device includes tubular shell, the upper end connecting hole, lower extreme connecting hole and side connecting hole, top and bottom at tubular shell are provided with upper end connecting hole and lower extreme connecting hole respectively, lower extreme lateral part at tubular shell is equipped with the side connecting hole, be connected with a tee bend through the manometer in upper end connecting hole department, two other branch roads of tee bend are connected pure water flux and entrapment rate detecting element and bubble point pressure detecting element respectively, the membrane silk subassembly that awaits measuring of connecting hole department installation of lower extreme, the below of the membrane silk subassembly that awaits measuring is equipped with water container greatly. The utility model integrates the membrane yarn pure water flux, the retention rate detection and the membrane yarn bubble point pressure detection, and can detect various membrane performances; the membrane silk detection convenience is improved, and the timeliness of membrane silk detection is improved while the detection accuracy is ensured.
Description
Technical Field
The utility model belongs to the technical field of the membrane separation among the sewage treatment, a detection device to the membrane is related to, especially a hollow fiber membrane performance detecting system.
Background
With the serious deterioration of water environment quality and the rapid development of economy, the development of corresponding sewage recycling technology is urgently required to relieve the shortage of water resources, and in the field, the membrane separation technology occupies an important position. As an important form of separation membrane, hollow fiber membranes have been widely used in the fields of sewage treatment, preparation of ultrapure water, hemodialyzer, seawater desalination, artificial lung, dehydration of organic solvents, mixing of organic solvents, and the like, due to their unique advantages of large specific surface area, high packing density of membrane modules, compact equipment, easy cleaning, and the like, and particularly, have attracted attention for their application in large-scale sewage treatment processes.
The most common material of hollow fiber membrane for water treatment in the existing market is polyvinylidene fluoride (PVDF), and along with the continuous increase of hollow fiber membrane output, strictly control the membrane quality in the production process, and also provide higher and higher requirements for the rapid detection technology of hollow fiber membrane performance. The faster the membrane performance is detected, the faster the quality control reaction in the production process is, and the more stable the performance and quality of the membrane is.
At present when the performance to hollow fiber membrane silk is detected, mostly use dull and stereotyped membrane detection device, and hollow fiber membrane's detection device mostly need pour into the form of little subassembly with a certain amount of membrane silk and detect, because of pour used mostly for epoxy glue, its curing time is of a specified duration, and the easy emergence leaks gluey phenomenon. The whole process is complex, the energy consumption is high, and the timeliness and the accuracy are difficult to be considered.
Therefore, the utility model provides a performance detecting system of hollow fiber membrane silk can be quick, accurate detection membrane silk performance, and is very important to producing the reliable and stable hollow fiber membrane of quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a structural design scientific and reasonable, the hollow fiber membrane performance detecting system of convenient operation, reduction energy consumption, improvement detection efficiency, easily realization.
The utility model provides a its technical problem realize through following technical scheme:
the utility model provides a hollow fiber membrane performance detecting system, includes the membrane silk subassembly that awaits measuring, its characterized in that: the membrane component sealing device comprises a tubular shell, an upper end connecting hole, a lower end connecting hole and side end connecting holes, the tubular shell is vertically placed, the top and the bottom of the tubular shell are respectively provided with the upper end connecting hole and the lower end connecting hole, the side end connecting hole is formed in the side portion of the lower end of the tubular shell, the upper end connecting hole is connected with a tee joint through a pressure gauge, the other two branches of the tee joint are respectively connected with the pure water flux and rejection rate detecting unit and the bubble point pressure detecting unit, a membrane wire component to be detected is installed at the connecting hole of the lower end, and the water container is arranged right below the membrane wire component to be detected.
And the pure water flux and interception rate detection unit comprises a liquid source, a water suction pump, a total water valve, a pressure gauge and a water quantity regulating valve, wherein one branch of the tee joint is sequentially connected with the total water valve, the water suction pump and the liquid source, the pressure gauge is installed on the branch of the tee joint connected with the membrane module sealing device, a water pipe connected to the liquid source is installed at the side end connecting hole, and the water quantity regulating valve is installed on the water pipe.
And the bubble point pressure detection unit comprises an air source, a pressure reducing valve, a barometer and an air quantity regulating valve, and the other branch of the tee joint is sequentially connected with the air quantity regulating valve, the barometer, the pressure reducing valve and the air source.
Moreover, the water container is a measuring cylinder or a water tank.
And the liquid source is deionized water or bovine serum albumin test solution at the constant temperature of 25 ℃.
Moreover, the air source is clean air or nitrogen.
And, the membrane silk subassembly that awaits measuring constitute by membrane silk, needle tubing, connecting pipe and ligature area, the top of membrane silk is tied up tightly by the ligature area, the bottom ligature of membrane silk has the needle tubing of injecting the inside of membrane silk, and the other end of needle tubing passes through the sealing member intercommunication and installs on the connecting pipe, and this connecting pipe cartridge is in lower extreme connecting hole department.
Moreover, the binding band is a rope or a waterproof transparent adhesive tape.
The utility model discloses an advantage and beneficial effect do:
the utility model integrates the membrane yarn pure water flux, the retention rate detection and the membrane yarn bubble point pressure detection, and can detect various membrane performances; the pure water flux of the membranes in different forms (internal pressure membrane and external pressure membrane) can be measured only by changing the connection mode between the membrane wire assembly to be measured and the sealing device, so that the membrane wire assembly and the sealing device are integrated and multipurpose; the utility model discloses broken through in the past the membrane silk performance detect time measuring need pour into the limitation of subassembly, greatly improved the convenience that the membrane silk detected, improved the ageing that the membrane silk detected when guaranteeing to detect the accuracy.
The hollow fiber membrane performance detection system can be simply and rapidly assembled, greatly improves the membrane performance detection speed and efficiency, and is beneficial to the management and control of product quality in the production process and the production line management of factories;
when detecting, through intercepting a segment membrane silk, obtain the membrane silk subassembly that awaits measuring after the equipment, realize the detection to each item performance of membrane silk that awaits measuring through the cartridge direction of adjustment connecting pipe in lower extreme connecting hole department, easy operation, saved the cost, reduced the loss, can in time feed back the testing result to research and development and producers, then adjust fast, effectively, avoid the raw materials extravagant.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the membrane module sealing device of the present invention;
fig. 3 is a schematic structural diagram (cross-sectional view, omitting membrane wires) of the membrane wire assembly to be tested assembled on the membrane wire sealing device.
Description of reference numerals:
the device comprises a liquid source 1, a water pump 2, a total water valve 3, a pressure gauge 4, a membrane wire sealing device 5, a water quantity regulating valve 6, a membrane wire component 7 to be tested, a water container 8, a gas source 9, a pressure reducing valve 10, a pressure gauge 11, a gas quantity regulating valve 12, an upper end connecting hole 13, a tubular shell 14, a side end connecting hole 15, a lower end connecting hole 16, a needle tube 17 and a connecting tube 18.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustrative purposes only, and are not intended to be limiting, and the scope of the present invention should not be limited thereby.
The utility model provides a hollow fiber membrane performance detecting system, including the membrane silk subassembly 7 that awaits measuring, its innovation part lies in: the membrane component sealing device comprises a liquid source 1, a water suction pump 2, a total water valve 3, a pressure gauge 4, a membrane component sealing device 5, a water container 8, a water quantity regulating valve 6, an air source 9, a pressure reducing valve 10, a barometer 11 and a gas quantity regulating valve 12, wherein the membrane component sealing device comprises a tubular shell 14, an upper end connecting hole 13, a lower end connecting hole 16 and a side end connecting hole 15, the tubular shell is vertically placed, the upper end connecting hole and the lower end connecting hole are respectively formed in the top and the bottom of the tubular shell, the side end connecting hole is formed in the side portion of the lower end of the tubular shell, a tee joint is connected to the upper end connecting hole through the pressure gauge, the total water valve, the water suction pump and the liquid source are sequentially connected to one branch of the tee joint, the gas quantity regulating valve, the gas pressure gauge, the pressure reducing valve and the air source are sequentially connected to the other branch of the tee joint, the pressure gauge is installed on the branch of the tee joint with the membrane component sealing device, a water pipe connected to the liquid source is installed at the side end connecting hole, the water quantity regulating valve is installed on the water pipe, the membrane filament component to be tested is installed at the connecting hole at the lower end, and the water container is installed under the membrane filament component to be tested.
The membrane silk subassembly that awaits measuring constitute by membrane silk, needle tubing 17, connecting pipe 18 and ligature area, the connecting pipe be a PVC hyaline tube, the top of membrane silk is fastened by the ligature area, the bottom ligature of membrane silk has the needle tubing that injects the inside of membrane silk, and the other end of needle tubing passes through the sealing member intercommunication to be installed on the connecting pipe, this connecting pipe cartridge is in lower extreme connecting hole department. The sealing element is a rubber plug which is arranged on the inner wall of one end of the connecting pipe, and the needle tube penetrates through the rubber plug.
The water container is a measuring cylinder when the pure water flux and the retention rate of the membrane wire assembly to be detected are detected, and is a water tank when the bubble point pressure of the membrane wire assembly to be detected is detected.
The liquid source is deionized water or bovine serum albumin testing solution at the constant temperature of 25 ℃ and is used for testing the pure water flux and the rejection rate of the membrane wire assembly to be tested.
The water pump is used for providing motion power for the liquid. The main water valve is used for controlling the opening and closing of the liquid, and the flow rate and the pressure of the liquid can be adjusted through the opening degree of the main water valve.
The pressure gauge is used for monitoring and representing the liquid pressure of the detection pipeline of the membrane wire assembly to be detected.
The membrane silk sealing device is used for connecting the membrane silk component to be tested into a test system and ensuring the sealing performance.
The water quantity regulating valve is used for opening and closing the membrane wire assembly to be measured when liquid flows through the membrane wire assembly to be measured, and the water quantity and the pressure of the membrane wire assembly to be measured can be regulated through the opening degree of the valve.
The measuring cylinder is used as a collecting container for the permeate on the surface of the membrane silk.
The air source is clean air or nitrogen and is provided by an air compressor or a nitrogen cylinder to test the bubble point pressure of the membrane filaments.
The pressure reducing valve is used for reducing the pressure of the pressure air source to a pressure value required by detection.
The air pressure meter is used for monitoring and representing the air pressure value in the pipeline.
The air quantity regulating valve is used for controlling the on and off of the conveying pressure air, and can regulate the air quantity and the pressure of the test air circuit by controlling the opening degree of the air valve.
The water tank is used as a medium for testing the bubble point pressure of the membrane filaments, and the membrane filaments need to extend below the liquid level of the water tank during testing.
A test method using the hollow fiber membrane performance test system comprises the following basic test steps: measuring a certain length of hollow fiber membrane wire, fastening one end of the membrane wire by using a rope or tightly winding a waterproof transparent adhesive tape to prevent liquid from leaking out during testing, and inserting a needle tube into the other end of the membrane wire to fasten or tightly wind the needle tube to be used as a membrane wire component to be tested; fixing the membrane wire assembly to be tested in a sealing device in a specific mode according to different test items; and (3) measuring pure water flux, retention rate and bubble point pressure parameters of the membrane wire assembly to be measured.
The following description will take the test system of the present invention as an example, as shown in fig. 1, to explain the specific operation of the present invention in testing the membrane wires to be tested.
1. Carrying out external pressure pure water flux and rejection rate flux test on the membrane wire assembly to be tested, and comprising the following steps:
the method comprises the steps of measuring hollow fiber membrane filaments with a certain length, tying one end of each membrane filament with a rope or tightly winding a waterproof transparent adhesive tape to prevent liquid from leaking during testing, inserting a needle tube which is installed with a connecting pipe into the other end of each membrane filament to form a membrane filament assembly to be tested, inserting the membrane filament assembly to be tested into a membrane assembly sealing device, and enabling the membrane filaments to be located inside the sealing device at the moment. Selecting a corresponding liquid source for testing, controlling related valves on the pipeline, namely closing the air flow regulating valve, opening the main water valve and the water quantity regulating valve, inputting the liquid source to the membrane wire assembly to be tested, regulating the opening degrees of the main water valve and the water quantity regulating valve, and matching with a pressure gauge to ensure that the flow and the pressure of the liquid source reach the set values for testing, and starting to time the prepressing time.
And when the operation of the test system reaches the set pre-pressing time, starting to time the filtration time, and simultaneously placing the measuring cylinder below the membrane component sealing device to collect the permeate on the surface of the membrane. When the system runs for the set filtering time, the measuring cylinder is removed to finish collection, and the liquid source input is stopped. And finally, calculating according to the calculation method of the pure water flux and the rejection rate of the hollow fiber membrane to obtain a corresponding test result.
2. And carrying out an internal pressure pure water flux test on the membrane wire assembly to be tested, and comprising the following steps:
measuring a hollow fiber membrane wire with a certain length, fastening one end of the membrane wire by using a rope or tightly winding a waterproof transparent adhesive tape to prevent liquid from leaking during testing, inserting a needle tube which is installed with a connecting tube into the other end of the membrane wire to become a membrane wire assembly to be tested, inserting the membrane wire assembly to be tested into a membrane assembly sealing device, and at the moment, positioning the membrane wire outside the sealing device;
selecting corresponding testing air source, controlling relevant valves on the pipeline, namely controlling and adjusting relevant valves on the testing air path, namely closing the total water valve and the water quantity regulating valve, opening the pressure reducing valve and the air quantity regulating valve, and inputting the air source to the membrane wire assembly to be tested.
And after the test system runs for the set prepressing time, starting timing the filtration time when the test system runs for the set prepressing time, and simultaneously placing the measuring cylinder at the lower part of the sealing device to collect the permeate liquid on the surface of the membrane. When the system runs for the set filtering time, the measuring cylinder is removed to finish the collection, and the air supply is stopped. And finally, calculating according to the calculation method of the pure water flux and the rejection rate of the hollow fiber membrane to obtain a corresponding test result.
3. The membrane bubble point test of the membrane wire assembly to be tested comprises the following steps:
measuring a hollow fiber membrane wire with a certain length, fastening one end of the membrane wire by using a rope or tightly winding a waterproof transparent adhesive tape to prevent liquid from leaking during testing, inserting a needle tube which is installed with a connecting tube into the other end of the membrane wire to become a membrane wire assembly to be tested, inserting the membrane wire assembly to be tested into a membrane assembly sealing device, and at the moment, positioning the membrane wire outside the sealing device;
when the bubble point pressure is tested, the connection mode of the membrane wire component to be tested and the membrane component sealing device is different from that when the pure water flux and the retention rate are tested, and when the bubble point pressure is tested, the other end of the membrane wire component to be tested is inserted into the membrane component sealing device. Selecting a corresponding testing air source, controlling and adjusting related valves on a testing air path, namely closing a total water valve and a water quantity regulating valve, opening a pressure reducing valve and an air quantity regulating valve, and inputting the air source to the membrane wire assembly to be tested; filling clear water into the pool until the membrane wire assembly to be detected is submerged; adjusting a pressure reducing valve according to the numerical value of the barometer to enable the pressure of the gas circuit, namely the pressure value of the barometer to reach a set value; and controlling and adjusting the air flow adjusting valve, and observing the surface and the pressure value of the membrane wire assembly to be detected.
When observing that bubbles begin to appear on the surface of the membrane wire assembly to be detected, recording the pressure value of the barometer at the moment as the maximum bubble point pressure; and continuously observing that a large number of uniform bubbles begin to appear on the surface of the membrane wire component to be detected, and recording the pressure value of the barometer at the moment as the average bubble point pressure.
Namely, the bubble point is the pressure value of the air source when the air source passes through the wall body of the membrane wire component to be detected and appears in a certain state.
The utility model discloses simple structure, convenient operation realizes that the cost is lower. During test and installation, the pure water flux (internal pressure and external pressure), the retention rate test and the bubble point pressure test of the membrane wire can be realized only by changing the connection mode (the needle tube is arranged upwards or downwards) of the membrane wire assembly and the sealing device; the utility model discloses broken through in the past the limitation that the subassembly need be pour into when membrane silk performance detects, greatly improved the convenience that the membrane silk detected, improved the ageing that the membrane silk detected when guaranteeing to detect the accuracy, quality management and control and product research and development provide strong basis in the product production process.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (8)
1. The utility model provides a hollow fiber membrane performance detecting system, includes the membrane silk subassembly that awaits measuring, its characterized in that: the membrane component sealing device comprises a tubular shell, an upper end connecting hole, a lower end connecting hole and side end connecting holes, the tubular shell is vertically placed, the top and the bottom of the tubular shell are respectively provided with the upper end connecting hole and the lower end connecting hole, the side end connecting hole is formed in the side portion of the lower end of the tubular shell, the upper end connecting hole is connected with a tee joint through a pressure gauge, the other two branches of the tee joint are respectively connected with the pure water flux and rejection rate detecting unit and the bubble point pressure detecting unit, a membrane wire component to be detected is installed at the connecting hole of the lower end, and the water container is arranged right below the membrane wire component to be detected.
2. The hollow fiber membrane performance detection system of claim 1, wherein: the pure water flux and interception rate detection unit comprises a liquid source, a water suction pump, a total water valve, a pressure gauge and a water amount adjusting valve, wherein the total water valve, the water suction pump and the liquid source are sequentially connected to one branch of the tee joint, the pressure gauge is installed on the branch of the tee joint connected with the membrane module sealing device, a water pipe connected to the liquid source is installed at a side end connecting hole, and the water amount adjusting valve is installed on the water pipe.
3. The hollow fiber membrane performance detection system of claim 1, wherein: the bubble point pressure detection unit comprises an air source, a pressure reducing valve, a barometer and an air quantity regulating valve, wherein the air quantity regulating valve, the barometer, the pressure reducing valve and the air source are sequentially connected to the other branch of the tee joint.
4. The hollow fiber membrane performance detection system of claim 1, wherein: the water container is a measuring cylinder or a water tank.
5. The hollow fiber membrane performance detection system of claim 2, wherein: the liquid source is deionized water or bovine serum albumin test solution at the constant temperature of 25 ℃.
6. The hollow fiber membrane performance detection system of claim 3, wherein: the air source is clean air or nitrogen.
7. The hollow fiber membrane performance detection system of claim 1, wherein: the membrane silk subassembly that awaits measuring constitute by membrane silk, needle tubing, connecting pipe and ligature area, the top of membrane silk is fastened by the ligature area, the bottom ligature of membrane silk has the needle tubing that injects the membrane silk inside, and the other end of needle tubing passes through the sealing member intercommunication and installs on the connecting pipe, and this connecting pipe cartridge is in lower extreme connecting hole department.
8. The hollow fiber membrane performance detection system of claim 7, wherein: the binding band is a rope or a waterproof transparent adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222121203.9U CN218871804U (en) | 2022-08-12 | 2022-08-12 | Hollow fiber membrane performance detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222121203.9U CN218871804U (en) | 2022-08-12 | 2022-08-12 | Hollow fiber membrane performance detection system |
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| Publication Number | Publication Date |
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| CN218871804U true CN218871804U (en) | 2023-04-18 |
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| CN202222121203.9U Active CN218871804U (en) | 2022-08-12 | 2022-08-12 | Hollow fiber membrane performance detection system |
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| CN (1) | CN218871804U (en) |
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- 2022-08-12 CN CN202222121203.9U patent/CN218871804U/en active Active
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