Water treatment hollow fiber nanofiltration membrane production device with filtering function

Abstract

The utility model discloses a hollow fiber nanofiltration membrane production device with a filtering function for water treatment, which comprises a first mounting rack arranged above a base, a feeding roller arranged on the inner side of the first mounting rack, a material receiving box seat arranged on one side of the first mounting rack, and a second mounting rack arranged on the other side of the first mounting rack, a second mounting frame is arranged above the receiving box seat, and a hollow coating roller is arranged on the inner side of the second mounting frame; the liquid storage tank is arranged above the second mounting frame, a pump body is arranged on one side of the liquid storage tank, and a liquid conveying pipe is arranged between the pump body and the hollow coating roller; according to the production device, the base membrane is uniformly coated with an oil phase material through a hollow coating roller with the width larger than that of the base membrane, the base membrane is in a straightened state, a uniform oil phase layer can be formed on the surface of the base membrane, the quality of the produced nanofiltration membrane is improved, and the production efficiency is improved. The production efficiency of the nanofiltration membrane is improved.

Description

Technical Field

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

[0002] Nanofiltration membrane is a low-pressure driven membrane between reverse osmosis and ultrafiltration, and was previously called loose reverse osmosis membrane. Its pore size ranges from 0.5-2nm and its molecular weight cutoff (MWCO) is 100-2000Da. Its surface is generally positively or negatively charged in a neutral aqueous solution. It is a functional semipermeable membrane that allows solvent molecules or certain low molecular weight solutes or low-valent ions to pass through. It is a special and promising separation membrane variety, and it is named because it can retain substances of about nanometer size. It is used to remove organic matter and color from surface water, remove hardness from groundwater, partially remove soluble salts, concentrate fruit juice, and separate useful substances in medicines.

[0003] The Chinese patent publication number is CN110935327A, and the authorization announcement date is March 31, 2020. It is an internal pressure hollow fiber nanofiltration membrane production line, which belongs to the technical field of nanofiltration membrane production equipment. It includes a spinning system, a cleaning and drying system, a power transmission system, an oil phase immersion system, a fixed-length cutting system, a purge system, an aqueous phase reaction system, a blow-drying system, a wire collection system, and a vertical mechanical arm a and a vertical mechanical arm b for moving membrane filaments. The vertical mechanical arm a and the vertical mechanical arm b are respectively movably arranged on the vertical mechanical arm track a and the vertical mechanical arm track b. The beneficial effect of the present invention is that through this production line, PVDF spinning coagulation and fixed-length cutting are realized, and a layer of polyamide nanofiltration membrane layer is formed on the inner side of the filter membrane through oil phase immersion and aqueous phase reaction, and finally collected to form a set of efficient and complete internal pressure hollow fiber nanofiltration membrane production and processing system.

[0004] The existing nanofiltration membrane production equipment is produced by reverse interfacial polymerization. During the production process, the uniformity of the base membrane oil phase coating cannot be guaranteed, which easily causes an uneven oil phase layer to form on the surface of the prepared nanofiltration membrane, reduces the production quality of the nanofiltration membrane, and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a hollow fiber nanofiltration membrane production device for water treatment with a filtering function, so as to solve the problem proposed in the above background technology that the existing nanofiltration membrane production device is prepared and produced by a reverse interfacial polymerization method, and the uniformity of the base membrane oil phase coating cannot be guaranteed during the production process, which easily causes an uneven oil phase layer to form on the surface of the prepared nanofiltration membrane, thereby reducing the production quality of the nanofiltration membrane and failing to meet the use requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a hollow fiber nanofiltration membrane production device for water treatment with filtering function, comprising a base, and also comprising:

[0007] A first mounting frame is arranged above the base, and the first mounting frame is fixedly connected to the base, a feeding roller is arranged on the inner side of the first mounting frame, and the feeding roller is rotatably connected to the first mounting frame, a material receiving box seat is arranged on one side of the first mounting frame, and the material receiving box seat is fixedly connected to the base, a second mounting frame is arranged above the material receiving box seat, and the second mounting frame is connected to the material receiving box seat by screws, a hollow coating roller is arranged on the inner side of the second mounting frame, and the hollow coating roller is rotatably connected to the second mounting frame, and through holes are arranged on the hollow coating roller, and the through holes are arranged equidistantly on the hollow coating roller;

[0008] A liquid storage tank is arranged above the second mounting frame, a pump body is arranged on one side of the liquid storage tank, and the liquid storage tank and the pump body are connected to the second mounting frame by screws, the liquid storage tank is connected to the pump body, a liquid infusion tube is arranged between the pump body and the hollow coating roller, and one end of the liquid infusion tube passes through and extends to the interior of the hollow coating roller, the liquid infusion tube is rotatably connected to the hollow coating roller, and the other end of the liquid infusion tube is connected to the pump body;

[0009] A water immersion pool is arranged above the base, and the water immersion pool is arranged on one side of the receiving box seat, a receiving roller assembly is arranged on one side of the water immersion pool, and the water immersion pool and the receiving roller assembly are fixedly connected to the base.

[0010] Preferably, a fiber net is provided on the outside of the hollow coating roller, and the fiber net is closely connected to the hollow coating roller, a motor is provided on one side of the second mounting frame, and the motor is connected to the second mounting frame by screws, and the output end of the motor is connected to one end of the hollow coating roller.

[0011] Preferably, a first material guide roller is arranged above both ends of the immersion pool, two first material guide rollers are arranged, and the first material guide rollers are rotatably connected to the immersion pool, and a second material guide roller is arranged at the bottom of the immersion pool, and the second material guide roller is rotatably connected to the immersion pool.

[0012] Preferably, a mounting groove is provided on the inner wall of the first mounting frame, a U-shaped connecting frame is provided on the inner side of the first mounting frame, and both ends of the U-shaped connecting frame extend to the inside of the mounting groove, the U-shaped connecting frame is slidably connected to the first mounting frame, a pressure roller is provided below the U-shaped connecting frame, and the pressure roller is rotatably connected to the U-shaped connecting frame, the pressure roller is provided above the feeding roller, and compression springs are provided above both ends of the U-shaped connecting frame, two compression springs are provided, and both ends of the compression springs are respectively fixedly connected to the first mounting frame and the U-shaped connecting frame.

[0013] Preferably, a discharge valve is provided on one side of the material receiving box seat, and the discharge valve is connected to the material receiving box seat as a whole.

[0014] Preferably, a first drying box is provided on one side of the upper end of the material receiving box seat, and the first drying box is connected to the material receiving box seat by screws, and a second drying box is provided on one side of the upper end of the water immersion tank, and the second drying box is connected to the water immersion tank by screws.

[0015] Preferably, dust filter fans are provided at the upper ends of the first drying box and the second drying box, and the dust filter fans are connected to the first drying box and the second drying box by screws, and the dust filter fans are connected to the first drying box and the second drying box.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model device is provided with a pump body, a hollow coating roller, a motor, a liquid infusion tube, a through hole and a fiber net. The pump body extracts the oil phase material in the liquid storage tank and injects it into the hollow coating roller through the liquid infusion tube. The motor drives the hollow coating roller to rotate. The oil phase material in the hollow coating roller flows from the through hole to the fiber net. As the hollow coating roller rotates, the oil phase material is evenly coated on the base film, and the base film is subjected to oil phase coating treatment.

[0018] 2. The utility model device is provided with a water immersion tank, a first guide roller and a second guide roller. The first guide roller and the second guide roller stretch the base film into a V shape, so that the base film is fully immersed in the water phase for immersion treatment;

[0019] 3. The utility model device is provided with a first drying box, a second drying box and a dust filter and exhaust fan. The first drying box dries the base film after oil phase coating treatment, and the second drying box dries the base film after water phase immersion treatment. The dust filter and exhaust fan draws air and injects it into the first drying box and the second drying box, thereby accelerating the flow of hot air in the first drying box and the second drying box and improving the drying efficiency of the base film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a diagram showing the connection relationship between the feeding roller and the pressure roller and the first mounting frame of the utility model;

[0022] Figure 3 This is a diagram showing the connection between the material receiving box and the hollow coating roller of the utility model;

[0023] Figure 4 It is a top view of the immersion pool of the utility model.

[0024] In the figure: 1. base; 2. first mounting frame; 3. feeding roller; 4. pressure roller; 5. receiving box seat; 6. liquid storage tank; 7. pump body; 8. first drying box; 9. dust filter fan; 10. immersion tank; 11. first guide roller; 12. second drying box; 13. receiving roller assembly; 14. mounting groove; 15. U-shaped connecting frame; 16. compression spring; 17. hollow coating roller; 18. motor; 19. infusion tube; 20. through hole; 21. fiber mesh; 22. second mounting frame; 23. second guide roller; 24. discharge valve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-4 The utility model provides an embodiment: a hollow fiber nanofiltration membrane production device for water treatment with filtering function, including a base 1, and also including:

[0027] A first mounting frame 2 is arranged above the base 1, and the first mounting frame 2 is fixedly connected to the base 1, a feeding roller 3 is arranged on the inner side of the first mounting frame 2, and the feeding roller 3 is rotatably connected to the first mounting frame 2, a material receiving box seat 5 is arranged on one side of the first mounting frame 2, and the material receiving box seat 5 is fixedly connected to the base 1, a second mounting frame 22 is arranged above the material receiving box seat 5, and the second mounting frame 22 is connected to the material receiving box seat 5 by screws, a hollow coating roller 17 is arranged on the inner side of the second mounting frame 22, and the hollow coating roller 17 is rotatably connected to the second mounting frame 22, a through hole 20 is arranged on the hollow coating roller 17, and the through holes 20 are equidistantly arranged on the hollow coating roller 17;

[0028] A liquid storage tank 6 is arranged above the second mounting frame 22, a pump body 7 is arranged on one side of the liquid storage tank 6, and the liquid storage tank 6 and the pump body 7 are connected to the second mounting frame 22 by screws, the liquid storage tank 6 is connected to the pump body 7, a liquid infusion tube 19 is arranged between the pump body 7 and the hollow coating roller 17, and one end of the liquid infusion tube 19 passes through and extends to the inside of the hollow coating roller 17, the liquid infusion tube 19 is rotatably connected to the hollow coating roller 17, and the other end of the liquid infusion tube 19 is connected to the pump body 7;

[0029] The water immersion tank 10 is arranged above the base 1, and the water immersion tank 10 is arranged on one side of the material receiving box seat 5. A material receiving roller assembly 13 is arranged on one side of the water immersion tank 10, and the water immersion tank 10 and the material receiving roller assembly 13 are fixedly connected to the base 1.

[0030] During use: the base membrane is passed through the first mounting frame 2, the receiving box seat 5 and the water immersion tank 10 and connected to the receiving roller assembly 13, the base membrane is fitted with the hollow coating roller 17, the pump body 7 is opened to extract the oil phase material in the liquid storage tank 6 and inject it into the hollow coating roller 17 through the infusion tube 19, the oil phase material in the hollow coating roller 17 flows out from the through hole 20 and is evenly coated on the base membrane, the base membrane is subjected to oil phase coating treatment, and then the base membrane after the oil phase coating treatment is placed in the water immersion tank 10, the base membrane is subjected to water phase immersion treatment to obtain a nanofiltration membrane, and then the produced nanofiltration membrane is rolled up by the receiving roller assembly 13.

[0031] See also Figure 1 and Figure 3 A fiber web 21 is arranged on the outside of the hollow coating roller 17, and the fiber web 21 is closely connected to the hollow coating roller 17. A motor 18 is arranged on one side of the second mounting frame 22, and the motor 18 is connected to the second mounting frame 22 by screws. The output end of the motor 18 is connected to one end of the hollow coating roller 17, and the hollow coating roller 17 is driven to rotate by the motor 18. The rotating hollow coating roller 17 cooperates with the fiber web 21 to evenly coat the oil phase material onto the base film.

[0032] See also Figure 1 and Figure 4 A first material guide roller 11 is disposed above both ends of the immersion tank 10. Two first material guide rollers 11 are provided, and the first material guide rollers 11 are rotatably connected to the immersion tank 10. A second material guide roller 23 is disposed at the bottom of the immersion tank 10, and the second material guide roller 23 is rotatably connected to the immersion tank 10. The base film is stretched into a V shape by the first material guide roller 11 and the second material guide roller 23, so that the base film is fully immersed in the water phase for immersion treatment.

[0033] See also Figure 1 and Figure 2 A mounting groove 14 is provided on the inner wall of the first mounting frame 2, and a U-shaped connecting frame 15 is provided on the inner side of the first mounting frame 2, and both ends of the U-shaped connecting frame 15 extend to the inside of the mounting groove 14, the U-shaped connecting frame 15 is slidably connected to the first mounting frame 2, and a pressure roller 4 is provided below the U-shaped connecting frame 15, and the pressure roller 4 is rotatably connected to the U-shaped connecting frame 15, and the pressure roller 4 is arranged above the feeding roller 3, and compression springs 16 are provided above both ends of the U-shaped connecting frame 15. There are two compression springs 16, and the two ends of the compression spring 16 are respectively fixedly connected to the first mounting frame 2 and the U-shaped connecting frame 15, and a thrust is applied to the U-shaped connecting frame 15 by the compression spring 16, and under the action of the thrust, the pressure roller 4 and the feeding roller 3 are respectively in contact with the upper and lower end surfaces of the base film, and the base film is clamped, so that the conveyed base film is always in a straightened state, ensuring that the hollow coating roller 17 is fully fitted with the base film, thereby improving the base film coating effect.

[0034] See also Figure 1A discharge valve 24 is provided on one side of the material receiving box seat 5 , and the discharge valve 24 is connected to the material receiving box seat 5 as a whole, and the oil phase material dripping into the material receiving box seat 5 is discharged through the discharge valve 24 .

[0035] See also Figure 1 A first drying box 8 is provided on one side of the upper end of the material receiving box seat 5, and the first drying box 8 is connected to the material receiving box seat 5 by screws. A second drying box 12 is provided on one side of the upper end of the water immersion tank 10, and the second drying box 12 is connected to the water immersion tank 10 by screws. The base film after the oil phase coating treatment is dried by the first drying box 8, and the base film after the water phase immersion treatment is dried by the second drying box 12.

[0036] See also Figure 1 The upper ends of the first drying box 8 and the second drying box 12 are both provided with dust filter fans 9, and the dust filter fans 9 are connected to the first drying box 8 and the second drying box 12 by screws. The dust filter fans 9 are connected to the first drying box 8 and the second drying box 12. Air is drawn into the first drying box 8 and the second drying box 12 through the dust filter fans 9, thereby accelerating the flow of hot air in the first drying box 8 and the second drying box 12 and improving the drying efficiency of the base film.

[0037] Working principle: The base film is passed through the first mounting frame 2, the receiving box seat 5 and the immersion tank 10 and connected to the receiving roller assembly 13. The compression spring 16 applies thrust to the U-shaped connecting frame 15. Under the action of the thrust, the pressure roller 4 and the feeding roller 3 are respectively in contact with the upper and lower end surfaces of the base film, the base film is clamped, the base film is fitted with the hollow coating roller 17, and the base film is pulled by the receiving roller assembly 13; the pump body 7 is turned on to extract the oil phase material in the liquid storage tank 6 and inject it into the hollow coating roller 17 through the infusion tube 19. The oil phase material in the hollow coating roller 17 flows from the through hole 20 to the fiber web. 21, start the motor 18 to drive the hollow coating roller 17 to rotate, and with the rotation of the hollow coating roller 17, the oil phase material is evenly coated on the base film, and the base film is subjected to oil phase coating treatment, and the base film after the oil phase coating treatment is dried with the help of the first drying box 8; then the base film after the oil phase coating treatment is put into the water immersion tank 10 through the first guide roller 11 and the second guide roller 23, and the base film is subjected to water phase immersion treatment, and the second drying box 12 dries the base film after the water phase immersion treatment, and then the produced nanofiltration membrane is rolled up by the receiving roller assembly 13.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow fiber nanofiltration membrane production device for water treatment with filtering function, comprising a base (1), characterized in that: Also includes: A first mounting frame (2) is arranged above the base (1), and the first mounting frame (2) is fixedly connected to the base (1); a feeding roller (3) is arranged on the inner side of the first mounting frame (2), and the feeding roller (3) is rotatably connected to the first mounting frame (2); a material receiving box seat (5) is arranged on one side of the first mounting frame (2), and the material receiving box seat (5) is fixedly connected to the base (1); a second mounting frame (22) is arranged above the material receiving box seat (5), and the second mounting frame (22) is connected to the material receiving box seat (5) by screws; a hollow coating roller (17) is arranged on the inner side of the second mounting frame (22), and the hollow coating roller (17) is rotatably connected to the second mounting frame (22); a through hole (20) is arranged on the hollow coating roller (17), and the through holes (20) are arranged at equal intervals on the hollow coating roller (17); A liquid storage tank (6) is arranged above the second mounting frame (22), a pump body (7) is arranged on one side of the liquid storage tank (6), and the liquid storage tank (6) and the pump body (7) are connected to the second mounting frame (22) by screws, the liquid storage tank (6) and the pump body (7) are connected, a liquid infusion tube (19) is arranged between the pump body (7) and the hollow coating roller (17), and one end of the liquid infusion tube (19) passes through and extends to the interior of the hollow coating roller (17), the liquid infusion tube (19) is rotatably connected to the hollow coating roller (17), and the other end of the liquid infusion tube (19) is connected to the pump body (7); A water immersion tank (10) is arranged above the base (1), and the water immersion tank (10) is arranged on one side of the material receiving box seat (5), a material receiving roller assembly (13) is arranged on one side of the water immersion tank (10), and the water immersion tank (10) and the material receiving roller assembly (13) are fixedly connected to the base (1).

2. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 1, characterized in that: A fiber web (21) is disposed on the outside of the hollow coating roller (17), and the fiber web (21) is closely connected to the hollow coating roller (17); a motor (18) is disposed on one side of the second mounting frame (22), and the motor (18) is connected to the second mounting frame (22) via screws; an output end of the motor (18) is connected to one end of the hollow coating roller (17).

3. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 1, characterized in that: A first material guide roller (11) is disposed above both ends of the immersion pool (10), two first material guide rollers (11) are disposed, and the first material guide rollers (11) are rotatably connected to the immersion pool (10), and a second material guide roller (23) is disposed at the bottom of the immersion pool (10), and the second material guide roller (23) is rotatably connected to the immersion pool (10).

4. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 1, characterized in that: A mounting groove (14) is provided on the inner wall of the first mounting frame (2), a U-shaped connecting frame (15) is provided on the inner side of the first mounting frame (2), and both ends of the U-shaped connecting frame (15) extend into the interior of the mounting groove (14), the U-shaped connecting frame (15) is slidably connected to the first mounting frame (2), a pressure roller (4) is provided below the U-shaped connecting frame (15), and the pressure roller (4) is rotatably connected to the U-shaped connecting frame (15), the pressure roller (4) is provided above the feeding roller (3), and compression springs (16) are provided above both ends of the U-shaped connecting frame (15), two compression springs (16) are provided, and both ends of the compression springs (16) are fixedly connected to the first mounting frame (2) and the U-shaped connecting frame (15), respectively.

5. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 1, characterized in that: A discharge valve (24) is provided on one side of the material receiving box seat (5), and the discharge valve (24) and the material receiving box seat (5) are connected as a whole.

6. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 1, characterized in that: A first drying box (8) is provided on one side of the upper end of the material receiving box seat (5), and the first drying box (8) is connected to the material receiving box seat (5) by screws. A second drying box (12) is provided on one side of the upper end of the water immersion tank (10), and the second drying box (12) is connected to the water immersion tank (10) by screws.

7. The hollow fiber nanofiltration membrane production device for water treatment with filtering function according to claim 6, characterized in that: A dust filter fan (9) is provided at the upper end of each of the first drying box (8) and the second drying box (12), and the dust filter fan (9) is connected to the first drying box (8) and the second drying box (12) by screws. The dust filter fan (9) is connected to the first drying box (8) and the second drying box (12).

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