Water treatment hollow fiber nanofiltration membrane production device with drying structure

Abstract

The utility model discloses a water treatment hollow fiber nanofiltration membrane production device with a drying structure, which comprises two racks, a working table is fixedly arranged at the upper ends of the racks, and a first mounting frame is arranged in the middle of the upper end of the working table; the fan blades are arranged at the lower end of the first mounting frame transverse plate, a fixing plate is fixedly arranged at the position, below the fan blades, of the first mounting frame transverse plate, the middle position of the fixing plate is of a through structure, seven first heating wires are fixedly arranged in the through structure of the fixing plate, and the first heating wires are distributed at equal intervals; the first motor is fixedly arranged at the upper end of a transverse plate of the first mounting frame, and the structure solves the problems that after production is completed, an organic solution is prone to being retained on the surface of the hollow fiber nanofiltration membrane, and the hollow fiber nanofiltration membrane is difficult to separate when wound.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow fiber nanofiltration membrane production, in particular to a production device for a hollow fiber nanofiltration membrane for water treatment with a drying structure. Background Technique

[0002] The hollow fiber nanofiltration membrane is a kind of nanofiltration membrane, and its retention molecular weight is between ultrafiltration and reverse osmosis. It is mainly used to remove substances with solute particle sizes in the nanometer range. The hollow fiber nanofiltration membrane passes through a screening process related to the membrane pore size, with the pressure difference on both sides of the membrane as the driving force, enabling water and small molecule substances to pass through the membrane while retaining macromolecular substances. The hollow fiber nanofiltration membrane can effectively remove impurity substances such as suspended solids, colloids, bacteria, and viruses in tap water, and can also deeply treat sewage such as chemical sewage and biological sewage. Among them, the drying structure is an important mechanism in the hollow fiber nanofiltration membrane production device.

[0003] For example, the Chinese patent "A Preparation Device for a Hollow Fiber Nanofiltration Membrane" with the publication number CN203862144U includes three three-way valves, namely the first three-way valve, the second three-way valve, and the third three-way valve. The second three-way valve is respectively connected to a water pump, compressed air, and the first three-way valve through pipelines, and the water pump is connected to a water tank; the third three-way valve is respectively connected to an oil pump, compressed air, and the first three-way valve through pipelines, and the oil pump is connected to an oil tank; the outlet of the first three-way valve is connected to a hollow fiber ultrafiltration membrane element through a pipeline, and the compressed air is provided by an air compressor or a compressed air tank; the compressed air is provided by an air compressor or a compressed air tank.

[0004] Although the above-mentioned prior art can realize the production of hollow fiber nanofiltration membranes, in actual use, on the one hand, organic solution is likely to remain on the surface of the hollow fiber nanofiltration membrane after production. The hollow fiber nanofiltration membrane is directly immersed in the organic solvent and then wound up, resulting in the acceleration of the aging of the hollow fiber nanofiltration membrane by the organic solvent, thereby shortening the service life of the hollow fiber nanofiltration membrane. On the other hand, it is difficult to separate the hollow fiber nanofiltration membranes during winding. When the hollow fiber nanofiltration membranes are wound up, all the hollow fiber nanofiltration membranes are wound onto a single winding cylinder, resulting in the stacking of some hollow fiber nanofiltration membranes, thereby affecting the subsequent stretching use of the hollow fiber nanofiltration membranes. Therefore, it does not meet the existing requirements. For this reason, we propose a production device for a hollow fiber nanofiltration membrane for water treatment with a drying structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a production device for a hollow fiber nanofiltration membrane for water treatment with a drying structure to solve the problems of easy retention of organic solution on the surface of the hollow fiber nanofiltration membrane after production and difficult separation during winding of the hollow fiber nanofiltration membrane as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A hollow fiber nanofiltration membrane production device for water treatment with a drying structure, including a frame, and there are two frames. A workbench is fixedly arranged at the upper end of the frame, and a first mounting frame is arranged at the middle position of the upper end of the workbench; further including:

[0007] A fan blade, which is arranged at the lower end of the cross plate of the first mounting frame. A fixing plate is fixedly arranged below the cross plate of the first mounting frame where the fan blade is located. The middle position of the fixing plate is a through structure, and seven first heating wires are fixedly arranged inside the through structure of the fixing plate, and the first heating wires are equidistantly distributed;

[0008] A first motor, which is fixedly arranged at the upper end of the cross plate of the first mounting frame, and the output shaft of the first motor extends below the cross plate of the first mounting frame and is fixedly connected to the fan blade.

[0009] Preferably, fixing rods are fixedly arranged on both sides below the cross plate of the first mounting frame. A rolling wire cylinder is fixedly arranged on the fixing rod, the rolling wire cylinder is rotatably connected to the fixing rod, and there are several grooves on the rolling wire cylinder.

[0010] Preferably, a second heating wire is fixedly arranged inside the rolling wire cylinder on the outer side of the fixing rod, and the second heating wires are annularly and equidistantly distributed.

[0011] Preferably, second mounting frames are arranged at the front and rear ends on one side of the upper end of the workbench. A rotating rod is arranged between the second mounting frames, and the rotating rod is rotatably connected to the second mounting frames. A wire winding cylinder is fixedly arranged outside the second mounting frames. There are several grooves on the outer part of the wire winding cylinder, and the grooves on the wire winding cylinder correspond to the grooves on the rolling wire cylinder.

[0012] Preferably, a second motor is fixedly arranged at the rear end of the second mounting frame close to the rear end of the workbench, and the output shaft of the second motor extends to the other end of the second mounting frame and is fixedly connected to the rotating rod.

[0013] Preferably, ventilation holes are arranged inside the middle position of the upper end of the workbench, and the ventilation holes penetrate through the workbench.

[0014] Preferably, a third mounting frame is fixedly arranged on the other side of the upper end of the workbench. A discharge pipe is fixedly arranged at the upper end of the cross plate of the third mounting frame. Several spray heads are arranged at the lower end of the cross plate of the third mounting frame. The spray heads are communicated with the discharge pipe, and the positions of the spray heads correspond to the positions of the grooves on the rolling wire cylinder.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The utility model can dry the hollow fiber nanofiltration membrane through the fan blade and the first heating wire. When drying the hollow fiber nanofiltration membrane, one end of the hollow fiber nanofiltration membrane is fixed on the wire winding cylinder. At this time, the first motor is started, and the output shaft of the first motor drives the fan blade to rotate. When the fan blade rotates, the air around it forms a negative pressure and accelerates the air flow to form an air current. At the same time, the first heating wire is energized. When the current flows through the first heating wire, the resistance generated by the first heating wire itself generates heat. At this time, when the air current passes through the first heating wire, the temperature of the air current rises, and the high-temperature drying air current blows towards the surface of the hollow fiber nanofiltration membrane at an accelerated speed, thereby drying the hollow fiber nanofiltration membrane, avoiding the long-term retention of organic solvents on the hollow fiber nanofiltration membrane, and thus extending the service life of the hollow fiber nanofiltration membrane.

[0017] 2. The utility model can separately wind the hollow fiber nanofiltration membrane through the thread rolling cylinder and the wire winding cylinder. When winding the hollow fiber nanofiltration membrane, the hollow fiber nanofiltration membrane extruded by different nozzles first passes through the first mounting frame and contacts the thread rolling cylinder. At this time, each groove on the thread rolling cylinder contacts a hollow fiber nanofiltration membrane. Finally, one end of the hollow fiber nanofiltration membrane is fixed on the wire winding cylinder. At this time, the second heating wire is first energized. When the current flows through the second heating wire, the resistance generated by the second heating wire itself generates heat. The heat generated by the second heating wire is transferred to the outer wall of the thread rolling cylinder and raises the temperature of the hollow fiber nanofiltration membrane in contact with it. When winding, the second motor is started, and the output shaft of the second motor drives the rotating rod and the wire winding cylinder to rotate together, so that the hollow fiber nanofiltration membrane is wound and rolled on the wire winding cylinder, avoiding the stacking of multiple hollow fiber nanofiltration membranes during winding, and at the same time improving the winding effect of the hollow fiber nanofiltration membrane.

[0018] 3. The utility model can improve the air circulation during drying by setting ventilation holes. When drying, the generated high-temperature drying air current passes through the hollow fiber nanofiltration membrane and then passes through the ventilation holes provided on the workbench and flows to the lower part of the workbench. When there are ventilation holes on the workbench, the air current generated by the fan blade can pass through the workbench more smoothly, reducing the obstruction of the workbench to the air current, thereby improving the air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view of the internal structure of the utility model;

[0020] Figure 2 is the side view of the internal structure of the utility model;

[0021] Figure 3 is the top view of the internal structure of the utility model;

[0022] Figure 4 is the partial schematic view of the discharging structure of the utility model.

[0023] In the figure: 1, frame; 2, workbench; 3, first mounting bracket; 4, second mounting bracket; 5, third mounting bracket; 6, discharge pipe; 7, nozzle; 8, ventilation hole; 9, first motor; 10, fan blade; 11, fixing plate; 12, first heating wire; 13, fixing rod; 14, second heating wire; 15, thread rolling cylinder; 16, rotating rod; 17, wire winding cylinder; 18, second motor. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Please refer to Figures 1-4 , an embodiment provided by the present invention: A production device for hollow fiber nanofiltration membranes for water treatment with a drying structure, including a frame 1, and there are two frames 1. A workbench 2 is fixedly arranged at the upper end of the frame 1, and a first mounting bracket 3 is arranged at the middle position of the upper end of the workbench 2; further including:

[0026] A fan blade 10, which is arranged at the lower end of the cross plate of the first mounting bracket 3. A fixing plate 11 is fixedly arranged below the cross plate of the first mounting bracket 3 where the fan blade 10 is located. The middle position of the fixing plate 11 is a through structure, and seven first heating wires 12 are fixedly arranged inside the through structure of the fixing plate 11, and the first heating wires 12 are equally spaced.

[0027] A first motor 9, which is arranged at the upper end of the cross plate of the first mounting bracket 3, and the output shaft of the first motor 9 extends below the cross plate of the first mounting bracket 3 and is fixedly connected to the fan blade 10.

[0028] When in use, when drying the hollow fiber nanofiltration membrane, one end of the hollow fiber nanofiltration membrane is already fixed on the wire winding cylinder 17. At this time, the first motor 9 is turned on, so that the output shaft of the first motor 9 drives the fan blade 10 to rotate. When the fan blade 10 rotates, the air around it forms a negative pressure and accelerates the air flow to form an air current. At the same time, the first heating wire 12 is powered on. When the current flows through the first heating wire 12, the resistance generated by the first heating wire 12 itself generates heat. At this time, when the air current passes through the first heating wire 12, the temperature of the air current rises, so that the high-temperature dry air current blows towards the surface of the hollow fiber nanofiltration membrane at an accelerated speed, thereby drying the hollow fiber nanofiltration membrane.

[0029] Please refer to Figure 2, on both sides below the cross plate of the first mounting bracket 3, fixing rods 13 are fixedly arranged. A rolling die cylinder 15 is fixedly arranged on the fixing rod 13. The rolling die cylinder 15 is rotatably connected to the fixing rod 13, and there are several grooves on the rolling die cylinder 15, which is convenient for separating and drying the hollow fiber nanofiltration membrane through the grooves on the rolling die cylinder 15.

[0030] Please refer to Figure 1 , inside the outer side of the fixing rod 13 where the rolling die cylinder 15 is located, a second heating wire 14 is fixedly arranged, and the second heating wires 14 are annularly and equidistantly distributed, which is convenient for heating the rolling die cylinder 15 through the second heating wire 14.

[0031] Please refer to Figure 1 and Figure 3 , at the front and rear ends on one side of the upper end of the workbench 2, second mounting brackets 4 are arranged. A rotating rod 16 is arranged between the second mounting brackets 4. The rotating rod 16 is rotatably connected to the second mounting brackets 4. An unwinding cylinder 17 is fixedly arranged outside the second mounting brackets 4. There are several grooves on the outside of the unwinding cylinder 17, and the grooves on the unwinding cylinder 17 correspond to the grooves on the rolling die cylinder 15, which is convenient for winding the hollow fiber nanofiltration membrane through the unwinding cylinder 17.

[0032] Please refer to Figure 1 and Figure 3 , at the rear end of the second mounting bracket 4 close to the rear end of the workbench 2, a second motor 18 is fixedly arranged, and the output shaft of the second motor 18 extends to the other end of the second mounting bracket 4 and is fixedly connected to the rotating rod 16, which is convenient for driving the rotating rod 16 and the unwinding cylinder 17 to rotate together through the second motor 18.

[0033] Please refer to Figure 1 and Figure 2 , inside the middle position of the upper end of the workbench 2, a ventilation hole 8 is arranged, and the ventilation hole 8 penetrates through the workbench 2, which is convenient for improving the air flow.

[0034] Please refer to Figure 1 and Figure 4 , on the other side of the upper end of the workbench 2, a third mounting bracket 5 is fixedly arranged. An outlet pipe 6 is fixedly arranged at the upper end of the cross plate of the third mounting bracket 5. Several spray heads 7 are arranged at the lower end of the cross plate of the third mounting bracket 5. The spray heads 7 are communicated with the outlet pipe 6, and the positions of the spray heads 7 correspond to the positions of the grooves on the rolling die cylinder 15, which is convenient for extruding multiple hollow fiber nanofiltration membranes at one time through the spray heads 7.

[0035] Working principle: When winding the hollow fiber nanofiltration membrane, the hollow fiber nanofiltration membrane extruded by different nozzles 7 first passes through the first mounting frame 3 and contacts the thread rolling cylinder 15. At this time, each groove on the thread rolling cylinder 15 contacts a hollow fiber nanofiltration membrane. Finally, one end of the hollow fiber nanofiltration membrane is fixed on the wire winding cylinder 17. At this time, the second heating wire 14 is first energized. When current flows through the second heating wire 14, the resistance generated by the second heating wire 14 itself causes it to generate heat. The heat generated by the second heating wire 14 is transferred to the outer wall of the thread rolling cylinder 15 and raises the temperature of the hollow fiber nanofiltration membrane in contact with it. When winding, the second motor 18 is started, so that the output shaft of the second motor 18 drives the rotating rod 16 and the wire winding cylinder 17 to rotate together, so that the hollow fiber nanofiltration membrane is wound and wound on the wire winding cylinder 17. When drying, the generated high-temperature drying air flow passes through the hollow fiber nanofiltration membrane and then passes through the ventilation holes 8 provided on the workbench 2 and flows to the lower part of the workbench 2. When the ventilation holes 8 are provided on the workbench 2, the air flow generated by the fan blades 10 can pass through the workbench 2 more smoothly.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A hollow fiber nanofiltration membrane production device for water treatment with a dry structure, comprising a frame (1), wherein two frames (1) are provided, a workbench (2) is fixedly provided at the upper end of the frame (1), and a first mounting frame (3) is provided at the middle position of the upper end of the workbench (2); Features: Also includes: A fan blade (10) is arranged at the lower end of the horizontal plate of the first mounting frame (3); a fixing plate (11) is fixedly arranged below the horizontal plate of the first mounting frame (3) below the fan blade (10); a through structure is provided at the middle of the fixing plate (11); seven first heating wires (12) are fixedly arranged inside the through structure of the fixing plate (11), and the first heating wires (12) are distributed at equal intervals; A first motor (9) is arranged on the upper end of the horizontal plate of the first mounting frame (3) and is fixedly provided with the first motor (9), and an output shaft of the first motor (9) extends to the bottom of the horizontal plate of the first mounting frame (3) and is fixedly connected to the fan blade (10).

2. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 1, characterized in that: Fixed rods (13) are fixedly arranged on both sides below the horizontal plate of the first mounting frame (3), and a thread rolling cylinder (15) is fixedly arranged on the fixed rod (13). The thread rolling cylinder (15) is rotatably connected to the fixed rod (13), and a plurality of grooves are provided on the thread rolling cylinder (15).

3. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 2, characterized in that: The thread rolling cylinder (15) is internally fixedly provided with a second heating wire (14) located outside the fixing rod (13), and the second heating wires (14) are distributed in an annular shape and at equal intervals.

4. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 3, characterized in that: A second mounting frame (4) is provided at the front and rear ends of one side of the upper end of the workbench (2); a rotating rod (16) is provided between the second mounting frames (4), and the rotating rod (16) is rotatably connected to the second mounting frame (4); a wire collecting drum (17) is fixedly provided on the outside of the second mounting frame (4); the outside of the wire collecting drum (17) has a plurality of grooves, and the grooves on the wire collecting drum (17) correspond to the grooves on the wire rolling drum (15).

5. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 4, characterized in that: A second motor (18) is fixedly arranged at the rear end of the second mounting frame (4) near the rear end of the workbench (2), and an output shaft of the second motor (18) extends to the other end of the second mounting frame (4) and is fixedly connected to the rotating rod (16).

6. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 5, characterized in that: A ventilation hole (8) is provided inside the middle position of the upper end of the workbench (2), and the ventilation hole (8) passes through the workbench (2).

7. The hollow fiber nanofiltration membrane production device for water treatment with a dry structure according to claim 6, characterized in that: A third mounting frame (5) is fixedly arranged on the other side of the upper end of the workbench (2); a discharge pipe (6) is fixedly arranged on the upper end of a transverse plate of the third mounting frame (5); a plurality of nozzles (7) are arranged on the lower end of the transverse plate of the third mounting frame (5); the nozzles (7) are connected to the discharge pipe (6), and the positions of the nozzles (7) correspond to the positions of the grooves on the thread rolling cylinder (15).

Images