High-efficiency hollow fiber membrane filament drying device

Abstract

This utility model discloses a high-efficiency hollow fiber membrane drying device, relating to the field of hollow fiber membrane drying technology. The device includes a housing with supporting legs at the lower end. A mounting groove is provided on one side surface of the housing, and a drying assembly is installed inside the mounting groove. Multiple unwinding wheels are located at one end of the housing, and a winding wheel is located at the other end. A material trough is provided between the winding wheel and the unwinding wheel. The drying assembly includes a first drying chamber and a second drying chamber, with the second chamber located above the first chamber. Heating wires are installed on the inner walls of both the first and second drying chambers. This solution solves the problems of uneven coating on the surface of existing hollow fiber membranes, slow coating drying time, and excessive coating liquid seeping into the membrane pores, leading to increased gas mass transfer resistance and low efficiency per strand.

Description

Technical Field

[0001] This utility model relates to the field of hollow fiber membrane drying technology, specifically a high-efficiency hollow fiber membrane drying device. Background Technology

[0002] Hollow fiber membrane filaments are fibrous membrane materials with a hollow structure. They are fibrous in shape and have a self-supporting function. During production, the outer surface needs to be coated with a coating and then dried.

[0003] For example, the Chinese authorized patent CN215063474U (Drying Device for Hollow Fiber Membrane Production) includes a feed pipe, a dryer, and a discharge pipe. The dryer includes a lower shell and an upper shell. A through hole is provided in the middle of the lower shell. The through hole includes a guide part and a flow guide part. The guide part is frustum-shaped, and the flow guide part is an arc-shaped surface. This utility model can quickly dry bundled hollow fiber membranes with low labor intensity for workers and is easy to use with automated production lines. The bundled hollow fiber membranes enter the dryer through the feed pipe at the top of the dryer and exit through the discharge pipe, thus completing the drying process. During this process, hot air enters the annular air duct through the air inlet and flows out through the gap between the upper shell and the top of the flow guide part. Under the guidance of the flow guide part, the hot air flows downward along the guide part, thereby drying the bundled hollow fiber membranes that have passed through the through hole and the discharge pipe, resulting in good drying effect.

[0004] However, the existing coatings applied to the surface of hollow fiber membranes are uneven, the coating drying time is too slow, and excessive coating liquid seeps into the membrane pores, leading to increased gas mass transfer resistance and low efficiency of a single coating. Therefore, they do not meet the current requirements. To address this, we propose a high-efficiency hollow fiber membrane drying device. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency hollow fiber membrane drying device to solve the problems mentioned in the background art, such as uneven coating on the surface of existing hollow fiber membranes, slow coating drying time, excessive coating liquid seeping into the membrane pores leading to increased gas mass transfer resistance, and low efficiency of single coating.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency hollow fiber membrane drying device, comprising: a box body, a support leg provided at the lower end of the box body, an installation groove provided on one side surface of the box body, a drying component provided inside the installation groove, an unwinding wheel provided at one end of the box body, and multiple unwinding wheels provided, and a winding wheel provided at the other end of the box body, with a material trough provided between the winding wheel and the unwinding wheel.

[0007] Preferably, the drying assembly includes a first drying oven and a second drying oven, with the second drying oven located above the first drying oven, and heating wires are provided on the inner walls of both the first and second drying ovens.

[0008] Preferably, both the first and second ovens have air inlets on their bottom surfaces, and the second oven has an air outlet on its upper surface.

[0009] Preferably, the second oven has a positioning wheel inside near the top, a discharge port on one side surface near the top, a stabilizing wheel on one side of the discharge port, wheel frames at both ends of the stabilizing wheel, one end of the wheel frame being welded and fixed to the outer wall of the second oven, and the stabilizing wheel being rotatably connected to the wheel frame via a wheel axle.

[0010] Preferably, a fixing plate is provided on the other side surface of the first oven, and the fixing plate is fixed to the oven body by external bolts.

[0011] Preferably, a guide wheel is provided on one side of both the unwinding wheel and the winding wheel, a tension controller is provided on one side of the guide wheel, a first air knife is provided between the material trough and the tension controller, and a second air knife is provided between the material trough and the first drying oven.

[0012] Preferably, the unwinding wheel, the winding wheel, and the guide wheel all rotate via a wheel axle mounted at the center.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model consists of a first oven and a second oven forming a drying component. The drying tunnels of the first oven and the second oven are heated by heating wires to dry the membrane fibers after they have been coated by the material tank. Fresh air is introduced into the drying tunnel through the air inlet and exhaust air through the air outlet to ensure that the concentration of the diluent in the drying tunnel is not too high. The diluent is collected by the winding wheel and enters the next process. By using a double long-distance drying method and the effect of ventilation, safety is improved while reducing the drying of the coating on the surface of the hollow fiber membrane fibers. The material tank also improves the uniformity of the coating, improves the overall coating effect and drying efficiency of the hollow fiber membrane fibers, and reduces the gas mass transfer resistance caused by the coating liquid penetrating into the membrane pores. This solves the problems of uneven coating on the surface of the existing hollow fiber membrane fibers, slow coating drying time, excessive penetration of coating liquid into the membrane pores leading to increased gas mass transfer resistance, and low efficiency of single coating.

[0015] (2) An installation groove is set on one side of the box body, and a fixing plate is set on the other side of the first oven. The first oven is inserted into the installation groove, and the fixing plate is connected to the box body and fixed by external bolts, which facilitates the disassembly of the drying components and improves flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;

[0018] Figure 3 This is a schematic diagram of the equiaxial structure of the drying component cross-section of this utility model;

[0019] Figure 4 This is a schematic diagram of the outer surface structure of the box of this utility model;

[0020] In the diagram: 1. Chamber; 2. Drying assembly; 3. Support leg; 4. First drying oven; 5. Second drying oven; 6. Air inlet; 7. Air outlet; 8. Stabilizing wheel; 9. Discharge outlet; 10. Wheel frame; 11. Unwinding wheel; 12. Guide wheel; 13. Tension controller; 14. First air knife; 15. Material trough; 16. Second air knife; 17. Rewinding wheel; 18. Fixing plate; 19. Heating wire; 20. Positioning wheel; 21. Mounting slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a high-efficiency hollow fiber membrane drying device, comprising: a housing 1, a support leg 3 at the lower end of the housing 1, a drying assembly 2 inside a mounting groove 21, an unwinding wheel 11 at one end of the housing 1 (multiple unwinding wheels 11 are provided), a winding wheel 17 at the other end of the housing 1, and a material trough 15 between the winding wheel 17 and the unwinding wheel 11. The drying assembly 2 includes a first drying oven 4 and a second drying oven 5, with the second drying oven 5 located above the first drying oven 4. Heating wires 19 are provided on the inner walls of both the first drying oven 4 and the second drying oven 5. Air inlets 6 are provided on the surface of both the first drying oven 4 and the second drying oven 5 near the bottom. The surface is provided with an air outlet 7. A positioning wheel 20 is provided inside the second oven 5 near the top. A discharge port 9 is provided on one side of the second oven 5 near the top. A stabilizing wheel 8 is provided on one side of the discharge port 9. Wheel frames 10 are provided at both ends of the stabilizing wheel 8, and one end of the wheel frame 10 is welded and fixed to the outer wall of the second oven 5. The stabilizing wheel 8 is rotatably connected to the wheel frame 10 via a wheel axle. A guide wheel 12 is provided on one side of both the unwinding wheel 11 and the winding wheel 17. A tension controller 13 is provided on one side of the guide wheel 12. A first air knife 14 is provided between the material trough 15 and the tension controller 13. A second air knife 16 is provided between the material trough 15 and the first oven 4. The unwinding wheel 11, the winding wheel 17, and the guide wheel 12 are all connected... The film is fed through a centrally mounted axle, with multiple unwinding rollers 11 for unwinding. Each unwinding roller 11 is an individual guide roller, preventing tension on individual film filaments. Guide rollers 12 provide guidance, and a tension controller 13 controls the tension of the central fiber membrane, ensuring the tension of each film filament and preventing breakage due to uneven tension. Before reaching the feed trough 15, the film filaments are swept by a first air knife 14 to ensure no foreign matter on the surface, resulting in a tighter adhesion between the coating adhesive and the film filaments. After passing through the discharge trough 15 and before entering the drying assembly 2, the film filaments are swept again by a second air knife 16 to make the adhesive on the surface of the film filaments more uniform. The drying assembly 2 consists of a first drying oven 4 and a second drying oven 5. The drying tunnel is heated by heating wire 19, which dries the membrane fibers, allowing the coating adhesive to bond and cure more quickly, ensuring that the wound membrane fibers do not stick together. Fresh air is introduced into the drying tunnel through air inlet 6 and exhaust through air outlet 7, ensuring that the concentration of the diluent in the drying tunnel is not too high. After drying, the membrane fibers are guided by positioning wheel 20, led out from discharge port 9, supported by stabilizing wheel 8, and collected by winding wheel 17 before entering the next process. Through the dual long-distance drying method, coupled with the ventilation effect, safety is improved while reducing the drying time of the coating on the surface of the hollow fiber membrane fibers. Furthermore, the material tank 15 improves the uniformity of coating application, thereby improving the overall coating effect and drying efficiency of the hollow fiber membrane fibers.

[0023] Please see Figure 1 , 34. A mounting groove 21 is provided on one side surface of the chamber 1, and a fixing plate 18 is provided on the other side surface of the first drying oven 4. The fixing plate 18 is fixed to the chamber 1 by external bolts. The first drying oven 4 is inserted into the mounting groove 21, and the fixing plate 18 is connected to the chamber 1 and fixed by external bolts, which facilitates the disassembly of the drying component 2 and improves flexibility.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency hollow fiber membrane drying device, comprising a housing (1), wherein a support leg (3) is provided at the lower end of the housing (1), characterized in that: A mounting groove (21) is provided on one side surface of the box (1), and a drying component (2) is provided inside the mounting groove (21). A unwinding wheel (11) is provided at one end of the box (1), and multiple unwinding wheels (11) are provided. A winding wheel (17) is provided at the other end of the box (1), and a material trough (15) is provided between the winding wheel (17) and the unwinding wheel (11).

2. The high-efficiency hollow fiber membrane drying device according to claim 1, characterized in that: The drying assembly (2) includes a first drying oven (4) and a second drying oven (5), with the second drying oven (5) located at the upper end of the first drying oven (4). The inner walls of both the first drying oven (4) and the second drying oven (5) are provided with heating wires (19).

3. The high-efficiency hollow fiber membrane drying device according to claim 2, characterized in that: The first oven (4) and the second oven (5) are provided with air inlets (6) on the side surface near the bottom, and the second oven (5) is provided with air outlets (7) on the upper surface.

4. The high-efficiency hollow fiber membrane drying device according to claim 2, characterized in that: The second oven (5) is provided with a positioning wheel (20) inside near the top. The second oven (5) is provided with a discharge port (9) on one side surface near the top. A stabilizing wheel (8) is provided on one side of the discharge port (9). Both ends of the stabilizing wheel (8) are provided with wheel frames (10). One end of the wheel frame (10) is welded and fixed to the outer wall of the second oven (5). The stabilizing wheel (8) is rotatably connected to the wheel frame (10) through a wheel axle.

5. The high-efficiency hollow fiber membrane drying device according to claim 2, characterized in that: A fixing plate (18) is provided on the other side surface of the first oven (4), and the fixing plate (18) is fixed to the box body (1) by external bolts.

6. The high-efficiency hollow fiber membrane drying device according to claim 2, characterized in that: Guide wheels (12) are provided on one side of both the unwinding wheel (11) and the winding wheel (17). A tension controller (13) is provided on one side of the guide wheel (12). A first air knife (14) is provided between the material trough (15) and the tension controller (13). A second air knife (16) is provided between the material trough (15) and the first drying oven (4).

7. The high-efficiency hollow fiber membrane drying device according to claim 6, characterized in that: The unwinding wheel (11), the winding wheel (17), and the guide wheel (12) all rotate via a wheel axle installed at the center.

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