Device for testing pure water flux of hollow fiber ultrafiltration membrane

Abstract

The utility model discloses hollow fiber ultrafiltration membrane pure water flux's testing arrangement, including operation frame and water storage jar, the utility model discloses a mounting head, clamping ring, screw head have been used, when testing operation, personnel can push the clamping ring on mounting head, make the area between clamping ring expose, then personnel can be penetrated to membrane silk, and make its both ends from the position between the clamping ring of two groups of mounting heads, then release the clamping ring through the deformation reset of spring and can drive the clamping ring to be close, and then realize the fixed operation of membrane silk, then insert mounting head into test cylinder and rotate it, so that the threaded head on its surface is connected with the screw groove, and the sealing property is enhanced through the sealing gasket, liquid leakage is avoided during testing, the whole assembly structure is very simple, and the operation is relatively simple, the use difficulty is lower, and better use is convenient, and the operation is labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of ultrafiltration membrane module technology, and more specifically, to a testing device for the pure water flux of hollow fiber ultrafiltration membranes. Background Technology

[0002] Pure water flux is an important process operating parameter in membrane separation fluid processes. It refers to the amount of fluid passing through a unit membrane area per unit time, and is generally expressed as m / (m·s) or L / (m·h) (or expressed as m / s).

[0003] The existing publicly available technology, application number CN202323250837.5, describes a device for testing the pure water flux of an externally pressurized hollow fiber ultrafiltration membrane. The device includes membrane fibers, a detection container, and a water storage tank. A removable elastic fixing end is mounted on the top of the detection container. An exhaust device is provided on the top of the elastic fixing end, and a positioning hole is opened on the upper part of the elastic fixing end. The membrane fibers pass through the positioning hole and extend into the inner cavity of the detection container. An air valve is connected to the top of the water storage tank via a pipe. A water inlet is provided at the bottom of the detection container, and one end of a water valve is connected to the water inlet via a pipe. The other end of the water valve is connected to the lower part of the water storage tank via a pipe. An air supply device is connected to the top of the water storage tank via a pipe.

[0004] However, the above-mentioned patent still has certain drawbacks in its use: the installation of the membrane fibers is relatively complicated, which increases the labor intensity of personnel and makes the overall operation more difficult, which is not conducive to rapid assembly. Moreover, the test requires visual observation of the drop of pure water, which further increases the labor intensity of personnel. Furthermore, visual observation is prone to delays in detection, resulting in large errors and significantly reducing the overall test accuracy, which is not conducive to better use.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a device for testing the pure water flux of hollow fiber ultrafiltration membranes, which has the advantages of convenient installation, labor-saving operation, and high testing accuracy, thereby solving the problems mentioned in the background technology.

[0008] (II) Technical Solution

[0009] To achieve the aforementioned advantages of convenient installation, labor-saving operation, and high testing accuracy, the specific technical solution adopted by this utility model is as follows:

[0010] A device for testing the pure water flux of hollow fiber ultrafiltration membrane includes a working frame and a water storage tank. A fixed plate is fixedly installed at the center of the working frame, and a test cylinder is fixedly installed between the fixed plates. Threaded grooves are formed at the bottom of the test cylinder and the top of the fixed plate. Threaded heads are threaded into the threaded grooves, and installation heads are installed at the top of the threaded heads. There are two sets of installation heads, with the upper installation head being larger than the lower installation head. An adjustment groove is formed inside the installation head, and a clamping ring is slidably connected to one end of the adjustment groove inside the installation head. A spring is installed inside the adjustment groove and connected to one end of the clamping ring. A through hole is formed at the center of the surface of the upper installation head, and the clamping ring is located in the through hole. A groove is formed at the center of the surface of the lower installation head, and the clamping ring is located in the groove. A connecting rod is fixedly installed between the installation heads. A drain valve is installed on the surface of the upper installation head. Membrane fibers are clamped between the clamping rings.

[0011] Furthermore, a measuring cylinder is installed on one side of the test cylinder at a position on the surface of the work frame, a mounting plate is installed on one side of the measuring cylinder, and a visual inspection mechanism is installed on the surface of the mounting plate.

[0012] Furthermore, a water storage tank is installed at the bottom of the work frame, and a water supply pipe and a drain pipe are installed at the top of the water storage tank, with solenoid valves installed at each pipe, and a water pump is installed on the water supply pipe.

[0013] Furthermore, an inlet and an outlet are respectively provided at the bottom of the test tube.

[0014] Furthermore, the inlet and outlet are respectively connected to the inlet pipe and the outlet pipe.

[0015] Furthermore, a smart timer and a smart controller are installed on one side of the work rack.

[0016] Furthermore, the intelligent timer, solenoid valve, and visual inspection mechanism are all electrically connected to the intelligent controller.

[0017] Furthermore, a sealing gasket is provided at the bottom of the mounting head.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a device for testing the pure water flux of hollow fiber ultrafiltration membranes, which has the following features:

[0020] Beneficial effects:

[0021] (1) This utility model adopts an installation head, a clamping ring, and a threaded head. During the test operation, the operator can push the clamping ring on the installation head to expose the area between the clamping rings. Then, the operator can pass the membrane wire through it and position its two ends between the clamping rings of the two sets of installation heads. Then, the clamping ring is released and the spring deformation resets the clamping ring to move closer, thereby realizing the fixing operation of the membrane wire. Then, the installation head is inserted into the test cylinder and rotated to connect the threaded head on its surface with the threaded groove. The sealing gasket is used to enhance the sealing performance and prevent liquid leakage during the test. The entire assembly structure is very simple, the operation is relatively simple, the use difficulty is low, and it is easy to use. It has the advantages of convenient installation and labor-saving operation.

[0022] (2) This utility model adopts a visual inspection mechanism. When the membrane fiber is tested, the visual inspection mechanism on one side of the measuring cylinder can continuously photograph and analyze the measuring cylinder. This enables the timely detection of pure water droplets, thereby avoiding large test errors caused by untimely detection. It can effectively ensure the test effect and has the advantage of high test accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the hollow fiber ultrafiltration membrane pure water flux testing device proposed in this utility model;

[0025] Figure 2 This is a schematic diagram showing the connection between the mounting head and the connecting rod of this utility model;

[0026] Figure 3 This is a schematic diagram of the clamping ring of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the fixed plate of this utility model.

[0028] In the picture:

[0029] 1. Operating frame; 2. Water storage tank; 3. Water pump; 4. Solenoid valve; 5. Water supply pipe; 6. Water inlet; 7. Mounting plate; 8. Vision inspection mechanism; 9. Threaded groove; 10. Adjusting groove; 11. Clamping ring; 12. Spring; 13. Drain valve; 14. Mounting head; 15. Threaded head; 16. Fixing plate; 17. Measuring cylinder; 18. Membrane fiber; 19. Test cylinder; 20. Connecting rod; 21. Water outlet; 22. Sealing gasket; 23. Drain pipe; 24. Intelligent timer; 25. Intelligent controller. Detailed Implementation

[0030] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0031] According to an embodiment of the present invention, a device for testing the pure water flux of a hollow fiber ultrafiltration membrane is provided.

[0032] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, the hollow fiber ultrafiltration membrane pure water flux testing device according to an embodiment of the present invention includes a working frame 1 and a water storage tank 2. A fixed plate 16 is fixedly installed at the middle position of the surface of the working frame 1. A test cylinder 19 is fixedly installed between the fixed plates 16. Threaded grooves 9 are provided at the bottom of the test cylinder 19 and the top of the fixed plates 16. Threaded heads 15 are threadedly connected to the inside of the threaded grooves 9. An installation head 14 is installed at the top of the threaded head 15. There are two sets of installation heads 14, and the upper installation head 14 is larger than the lower installation head 14. An adjustment groove 10 is provided inside the installation head 14. A clamp is slidably connected to one end of the adjustment groove 10 inside the installation head 14. A spring 12 is installed inside the ring 11 and the adjusting groove 10, and the spring 12 is connected to one end of the clamping ring 11. A through hole is opened in the middle of the surface of the upper mounting head 14, and the clamping ring 11 is located in the through hole. A groove is opened in the middle of the surface of the lower mounting head 14, and the clamping ring 11 is located in the groove. A connecting rod 20 is fixedly installed between the mounting heads 14. A drain valve 13 is installed on the surface of the upper mounting head 14. A membrane wire 18 is clamped between the clamping rings 11. The working frame 1 is the main support structure of the device and integrates all test components. The water storage tank 2 is used to store pure water and supply water to the test cylinder 19 through the pipeline system to ensure the stability of the device, provide continuous water supply support, and avoid frequent water replenishment. The fixed plate 16 fixes the position of the test cylinder 19. The test cylinder 19 has a hollow structure to accommodate the membrane fiber 18 and form a closed test environment, ensuring that the membrane fiber 18 is installed vertically, avoiding contact with the cylinder wall, and maintaining consistent test conditions. The threaded groove 9 is opened at the bottom of the test cylinder 19 and the top of the fixed plate 16, and cooperates with the threaded head 15 at the bottom of the mounting head 14 to achieve quick screw-on fixing, simplifying the installation steps. The threaded connection ensures airtightness and prevents liquid leakage during testing. The mounting head 14 is divided into upper and lower groups. The upper mounting head 14 is larger in size and has an adjustment groove 10 inside to accommodate the clamping ring 11 and spring 12. The lower mounting head 14 has a groove to adapt to the bottom end of the membrane fiber 18, which is convenient to operate: push the clamping ring 11 to expose the installation area and insert the membrane fiber 18. After the membrane fiber 18 is released, the clamping ring 11 is released, and the spring 12 automatically clamps back; good sealing performance: the clamping ring 11 is in close contact with the membrane fiber 18, combined with the sealing gasket 22, which avoids liquid leakage. The adjusting groove 10 provides a sliding track for the clamping ring 11; the spring 12 connects to the clamping ring 11, providing a reset elastic force to realize the elastic opening and closing of the clamping ring 11, ensuring that the membrane fiber 18 is fixed without loosening, and adapting to the clamping requirements of membrane fibers 18 of different diameters. The drain valve 13 is located on the surface of the upper mounting head 14 and is used to discharge gas or residual liquid in the test tube 19. The connecting rod 20 fixes the distance between the upper and lower mounting heads 14, maintains the vertical state of the membrane fiber 18, optimizes the gas and liquid discharge process, avoids bubble interference, keeps the membrane fiber 18 with uniform tension, and improves the test accuracy.

[0033] In one embodiment, a measuring cylinder 17 is installed on one side of the test cylinder 19, located on the surface of the work frame 1. An installation plate 7 is installed on one side of the measuring cylinder 17, and a vision inspection mechanism 8 is installed on the surface of the installation plate 7. The measuring cylinder 17 collects the pure water discharged from the membrane fiber 18 and measures its volume. The vision inspection mechanism 8 monitors the changes in the liquid level inside the measuring cylinder 17 in real time through a camera, identifies the landing point of the first drop of pure water, and triggers the intelligent timer 24 to eliminate manual timing errors, realize the automation of test start / stop, and improve test accuracy.

[0034] In one embodiment, a water storage tank 2 is installed at the bottom of the work frame 1, and a water supply pipe 5 and a drain pipe 23 are installed at the top of the water storage tank 2. Solenoid valves 4 are installed at both pipes. A water pump 3 is installed on the water supply pipe 5. The water pump 3 pumps pure water from the water storage tank 2 into the water inlet 6 of the test cylinder 19 through the water supply pipe 5. The solenoid valve 4 controls the opening and closing of the water flow, provides a stable water pressure (e.g., 0.1 MPa), simulates the actual filtration conditions, and ensures that the test conditions are standardized.

[0035] In one embodiment, the test cylinder 19 has an inlet 6 and an outlet 21 at the bottom of its interior.

[0036] In one embodiment, the inlet 6 and the outlet 21 are connected to the inlet pipe and the outlet pipe 23, respectively.

[0037] In one embodiment, a smart timer 24 and a smart controller 25 are installed on one side of the work rack 1. The smart controller 25 integrates the control of the solenoid valve 4, the vision inspection mechanism 8 and the smart timer 24 to achieve full-process automation. The smart timer 24 receives the vision inspection signal, accurately records the test time, automatically calculates the throughput (LMH), reduces manual intervention, automatically stores the data and generates reports, and improves test efficiency.

[0038] In one embodiment, the intelligent timer 24, the solenoid valve 4, and the vision inspection mechanism 8 are all electrically connected to the intelligent controller 25. The operating principle of the vision inspection mechanism 8 is as follows: 1. Image acquisition: An industrial camera (such as a Basler GIGE) captures the target object, and a light source (such as a ring LED) is used to enhance the contrast; 2. Image processing: An algorithm is run through an edge computing device (such as an Apogee AK5 controller) to perform noise reduction and feature extraction (shape, color); 3. Defect recognition: Based on a deep learning model (such as a Mingqing AI lightweight model), a preset template is matched to determine the defect and output the result. The operating principle of the intelligent controller 25 is as follows: The intelligent controller 25 acts as the "brain" of the system. It receives and feeds back signals through a microprocessor (such as an ARM Cortex-M series), executes control algorithms (such as PID, fuzzy control), and outputs control signals to drive the actuators (such as motors, solenoid valves 4). The specific models of the above structures can be adjusted according to requirements, and will not be elaborated on here.

[0039] In one embodiment, a sealing gasket 22 is provided at the bottom of the mounting head 14. The sealing gasket 22 at the bottom of the mounting head 14 fits against the inner wall of the test cylinder 19, enhancing the sealing of the threaded connection, eliminating the risk of test fluid leakage, and ensuring pressure stability.

[0040] Working principle: In actual use, the operator can push the clamping rings 11 on both mounting heads 14, thereby opening the area between the two sets of clamping rings 11. Then, the membrane fiber 18 to be tested can be passed through, so that one end of the membrane fiber 18 is on the bottom mounting head 14, while the other end is exposed on the outside of the top mounting head 14. After the membrane fiber 18 has passed through, the clamping rings 11 on the bottom mounting head 14 can be released, causing them to move closer together due to the deformation and reset of the spring 12, thus achieving the desired result. After clamping the bottom of the membrane fiber 18, the operator can pull the membrane fiber 18 to make it straight, and then release the clamping ring 11 at the top position to clamp the membrane fiber 18 again. At this time, the membrane fiber 18 will be fixed. Then, by inserting the mounting head 14 into the test cylinder 19 and rotating the mounting head 14, the structure can be fixed through the threaded groove 9 and the threaded head 15, which facilitates subsequent testing. Then, open the valve at the drain valve 13 position, and run the water pump 3 to discharge the pure water in the water storage tank 2. At this time, the pure water... Water can then enter the test cylinder 19. When pure water is discharged from the drain valve 13, the valve can be closed to expel the gas inside the test cylinder 19. Next, adjust the intelligent timer 24, starting the timer when the first drop of pure water discharged from the membrane fiber 18 enters the measuring cylinder 17, and stopping the timer when the predetermined time is reached. The recording time should be determined according to the expected flux of the membrane fiber 18. The operation process should be timely and accurate, and the test values ​​should be recorded. The test values ​​are recorded from the membrane fiber 18 on the bottom mounting head 14 to the membrane fiber 1 on the top mounting head 14. The parameters are: length (m), inner diameter (m), outer diameter (m), volume of pure water collected (L), water collection time (s), pure water temperature (°C), and test pressure (MPa). The flux is calculated using the following formula: Flux (L / m²·h) = [volume of pure water collected (L) × 3600 (s / h)] / [3.14 × outer diameter (m) × length (m) × water collection time (s)]. The overall device has the advantages of convenient installation, labor-saving operation, and high testing accuracy.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the pure water flux of a hollow fiber ultrafiltration membrane, comprising a work frame (1) and a water storage tank (2), characterized in that, A fixed plate (16) is fixedly installed at the middle position of the surface of the work frame (1). A test cylinder (19) is fixedly installed between the fixed plates (16). Threaded grooves (9) are opened at the bottom position of the test cylinder (19) and the top position of the fixed plate (16). A threaded head (15) is threadedly connected inside the threaded groove (9). An installation head (14) is installed at the top position of the threaded head (15). There are two sets of installation heads (14). The size of the upper installation head (14) is larger than that of the lower installation head (14). An adjustment groove (10) is opened inside the installation head (14). A clamping ring (11) is slidably connected to one end of the mounting head (14). A spring (12) is installed inside the adjusting groove (10), and the spring (12) is connected to one end of the clamping ring (11). A through hole is opened in the middle of the surface of the upper mounting head (14), and the clamping ring (11) is located in the through hole. A groove is opened in the middle of the surface of the lower mounting head (14), and the clamping ring (11) is located in the groove. A connecting rod (20) is fixedly installed between the mounting heads (14). A drain valve (13) is installed on the surface of the upper mounting head (14). A membrane filament (18) is clamped between the clamping rings (11).

2. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 1, characterized in that, A measuring cylinder (17) is installed on one side of the test cylinder (19) at the surface of the work frame (1), and a mounting plate (7) is installed on one side of the measuring cylinder (17). A visual inspection mechanism (8) is installed on the surface of the mounting plate (7).

3. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 1, characterized in that, A water storage tank (2) is installed at the bottom of the work frame (1). A water supply pipe (5) and a drain pipe (23) are installed at the top of the water storage tank (2). A solenoid valve (4) is installed at each pipe. A water pump (3) is installed on the water supply pipe (5).

4. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 1, characterized in that, The test tube (19) has an inlet (6) and an outlet (21) at the bottom of its interior.

5. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 4, characterized in that, The inlet (6) and outlet (21) are respectively connected to the inlet pipe and the outlet pipe (23).

6. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 1, characterized in that, A smart timer (24) and a smart controller (25) are installed on one side of the work rack (1).

7. The device for testing the pure water flux of a hollow fiber ultrafiltration membrane according to claim 6, characterized in that, The intelligent timer (24), solenoid valve (4) and vision detection mechanism (8) are all electrically connected to the intelligent controller (25).

8. The device for testing the pure water flux of the hollow fiber ultrafiltration membrane according to claim 1, characterized in that, The mounting head (14) is provided with a sealing gasket (22) at the bottom.

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