Drying device for hollow fiber membrane

Abstract

The drying device for the hollow fiber membrane comprises a drying box and the hollow fiber membrane, a feeding port is formed in one side wall of the drying box, a discharging port is formed in the other side wall of the drying box, a sealing door is installed on the outer wall of the drying box, a plurality of sets of supporting rollers are arranged in the drying box, and limiting plates are fixedly connected to the two side walls of the supporting rollers. Supporting rods are fixedly connected to the side walls of the limiting plates, the side ends of the supporting rods are movably connected to the inner wall of the drying box through bearings, and hollow fiber membranes are movably wound around supporting rollers, so that the drying efficiency can be improved, and the drying time can be shortened; the hollow fiber membrane is better dried, hot air in the drying box is evenly distributed, the hollow fiber membrane is evenly heated, a rectangular groove is formed to be matched with a filter screen, dust is prevented from entering a fan, the service life of the fan is prevented from being affected, and the practicability of the device is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow fiber membrane production, in particular to a drying device for the hollow fiber membrane. Background Art

[0002] As a method for manufacturing hollow fiber membranes, there is known a non-solvent phase separation method that utilizes the non-solvent phase separation phenomenon in which a polymer solution is separated by a non-solvent to make it porous. When the hollow fiber membrane is manufactured by wet spinning, a membrane-making stock solution including a hydrophobic polymer, a hydrophilic polymer and a solvent is discharged in a ring shape from a spinning nozzle, and a hollow fiber membrane is formed by a coagulation step in which the membrane is coagulated in a coagulation liquid. A large amount of hydrophilic polymer and solvent in a solution state remain on the hollow fiber membrane formed by the above coagulation step. When a large amount of hydrophilic polymer remains in the hollow fiber membrane, the water permeability is impaired. In addition, when the hydrophilic polymer is dried and solidified in the hollow fiber membrane, the mechanical strength of the membrane may be reduced. Therefore, usually after the coagulation step, the hydrophilic polymer remaining in the hollow fiber membrane is immersed in a liquid containing an oxidant such as hypochlorous acid, and is subjected to a treatment of heating decomposition, washing removal and drying.

[0003] In this regard, the Chinese utility model patent with the authorization announcement number CN103492058A discloses a drying device for the purpose of preventing the hollow fiber membrane from winding in the drying chamber and the hollow fiber membrane from being thinned and flattened. The drying device of the present invention comprises: a drying chamber provided with a heating unit; a guide roller for allowing two or more hollow fiber membranes (A) to travel inside the drying chamber; and two or more winding frames provided outside the drying chamber, each of which winds up a hollow fiber membrane (A) and dries two or more hollow fiber membranes (A) at the same time in the drying chamber, and a speed control unit is respectively installed on each of the two or more winding frames;

[0004] Most existing drying devices use electric heating plates for heat drying. The electric heating plates concentrate the hot air, so the hollow fiber membranes close to the heat source dry quickly, while the hollow fiber membranes far from the heat source dry slowly, resulting in uneven drying of the hollow fiber membranes and poor drying effect. Therefore, we propose a drying device for hollow fiber membranes to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a drying device for hollow fiber membranes to solve the problems raised in the above background technology.

[0006] A drying device for a hollow fiber membrane comprises a drying box and a hollow fiber membrane, wherein a feed inlet is provided on one side wall of the drying box and a discharge outlet is provided on the other side wall of the drying box;

[0007] A sealed door is installed on the outer wall of the drying box, and multiple groups of support rollers are arranged in the drying box. The two side walls of the support rollers are fixedly connected to the limit plates, and the side walls of the limit plates are fixedly connected to the support rods. The side ends of the support rods are movably connected to the inner wall of the drying box through bearings, and the hollow fiber membranes are movably wound on the support rollers.

[0008] An electric heating plate is fixedly installed on the bottom surface of the drying box, and movable grooves are symmetrically opened on the inner wall of the drying box. A ventilation groove is opened on the inner side of the movable groove, and a rectangular groove is opened on the outer side of the movable groove. A mounting frame is fixedly connected in the movable groove, and a fan is installed on the mounting frame. There are multiple groups of fans, and the fan output ports face the electric heating plate.

[0009] Preferably, electric heating tubes are installed on the electric heating plate, and multiple groups of electric heating tubes are evenly spaced vertically.

[0010] Preferably, the ventilation slot is arranged on a parallel side of the electric heating plate, and a filter is fixedly connected to the inner wall of the rectangular slot.

[0011] Preferably, the feed inlet is arranged parallel to the side of the discharge outlet, and a reinforcement plate is fixedly connected to the bottom wall of the drying box.

[0012] Preferably, a controller is fixedly mounted on the outer wall of the sealed door, and a handle is fixedly connected to the outer wall of the sealed door.

[0013] Preferably, multiple groups of support rollers are arranged evenly spaced apart.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model opens the sealing door, places one side of the hollow fiber membrane into the drying box through the feed port, then winds the hollow fiber membrane around the support roller in sequence, and finally extends it out through the discharge port. By setting multiple groups of support rollers, the hollow fiber membrane can be effectively stretched, the heating area of ​​the hollow fiber membrane is increased, and the drying effect of the hollow fiber membrane is better. By setting a limiting plate, the hollow fiber membrane can be effectively prevented from being separated from the support roller, so that the hollow fiber membrane is placed more firmly. The electric heating plate is provided to facilitate the heat drying of the hollow fiber membrane. By setting multiple groups of electric heating pipes, the drying efficiency can be accelerated and the drying time can be reduced. The movable groove is provided to facilitate the installation of fans. Multiple groups of fans blow air to the electric heating plate, and the hot air is blown inward from the side wall of the drying box, so that the hollow fiber membrane is better dried, so that the hot air in the drying box is evenly distributed, the hollow fiber membrane is evenly heated, and the drying effect is better. By setting a rectangular groove in conjunction with the filter screen, dust can be prevented from entering the fan to affect the service life of the fan, making the device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front view of the internal structure of the drying box in the utility model;

[0018] Figure 3 This is a schematic diagram of the front view of the internal structure of the movable groove in the utility model;

[0019] Figure 4 It is a schematic diagram of the internal side structure of the drying box in the utility model.

[0020] In the figure: 1. Drying box; 101. Feed inlet; 102. Discharge outlet; 103. Reinforcement plate; 2. Sealing door; 201. Controller; 202. Handle; 3. Support roller; 301. Limit plate; 302. Support rod; 4. Electric heating plate; 401. Electric heating tube; 5. Hollow fiber membrane; 6. Movable groove; 601. Ventilation groove; 602. Rectangular groove; 603. Filter; 7. Mounting frame; 8. Fan. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-2 The utility model provides a technical solution: a drying device for hollow fiber membranes, comprising a drying box 1 and a hollow fiber membrane 5, a feed inlet 101 is provided on one side wall of the drying box 1, and a discharge port 102 is provided on the other side wall of the drying box 1;

[0024] It should be noted that a sealed door 2 is installed on the outer wall of the drying box 1, and multiple groups of support rollers 3 are arranged in the drying box 1. The two side walls of the support rollers 3 are fixedly connected to the limit plates 301, and the side walls of the limit plates 301 are fixedly connected to the support rods 302. The side ends of the support rods 302 are movably connected to the inner wall of the drying box 1 through bearings. The hollow fiber membranes 5 are movably wound on the support rollers 3. By opening the sealed door 2, one side of the hollow fiber membrane 5 is placed in the drying box 1 through the feed port 101, and then the hollow fiber membranes 5 are sequentially wound on the support rollers 3, and finally extended out through the discharge port 102. By setting multiple groups of support rollers 3, the hollow fiber membranes 5 can be effectively stretched, the heating area of ​​the hollow fiber membranes 5 is increased, and the drying effect of the hollow fiber membranes 5 is better.

[0025] It should be noted that an electric heating plate 4 is fixedly installed on the bottom surface of the drying box 1, and movable grooves 6 are symmetrically opened on the inner wall of the drying box 1. A ventilation groove 601 is opened on the inner side of the movable groove 6, and a rectangular groove 602 is opened on the outer side of the movable groove 6. A mounting frame 7 is fixedly connected in the movable groove 6, and a fan 8 is installed on the mounting frame 7. There are multiple groups of fans 8, and the output ports of the fans 8 face the electric heating plate 4. The movable grooves 6 are provided to facilitate the installation of the fans 8. Multiple groups of fans 8 blow air toward the electric heating plate 4, and the hot air is blown inward from the side wall of the drying box 1 to better dry the hollow fiber membrane 5, so that the hot air in the drying box 1 is evenly distributed, the hollow fiber membrane 5 is evenly heated, and the drying effect is better.

[0026] Embodiment 2:

[0027] See also Figure 3 and Figure 4 , which is the second embodiment of the utility model, and this embodiment is based on the previous embodiment;

[0028] Specifically, the feed port 101 is arranged parallel to the side of the discharge port 102 , and a reinforcing plate 103 is fixedly connected to the bottom wall of the drying box 1 .

[0029] It should be noted that a controller 201 is fixedly installed on the outer wall of the dry sealing door 2 , and a handle 202 is fixedly connected to the outer wall of the sealing door 2 .

[0030] It should be noted that the support rollers 3 are arranged in multiple groups at even intervals.

[0031] In addition, electric heating tubes 401 are installed on the electric heating plate 4, and multiple groups of electric heating tubes 401 are evenly arranged vertically. By arranging multiple groups of electric heating tubes 401, the drying efficiency can be increased and the drying time can be reduced.

[0032] Specifically, the ventilation groove 601 is arranged on the parallel side of the electric heating plate 4, and the inner wall of the rectangular groove 602 is fixedly connected with a filter 603. By setting the rectangular groove 602 in conjunction with the filter 603, dust is prevented from entering the fan 8 and affecting the service life of the fan 8, making the device more practical.

[0033] See also Figures 1 to 4 , which is the third embodiment of the utility model, and this embodiment is based on the above two embodiments;

[0034] When the utility model is in use, the sealing door 2 is opened, one side of the hollow fiber membrane 5 is placed in the drying box 1 through the feed port 101, and then the hollow fiber membrane 5 is wound on the support roller 3 in sequence, and finally extended out through the discharge port 102. By setting up multiple groups of support rollers 3, the hollow fiber membrane 5 can be effectively stretched, and the heating area of ​​the hollow fiber membrane 5 is increased, so that the drying effect of the hollow fiber membrane 5 is better. By setting up the limiting plate 301, the hollow fiber membrane 5 can be effectively prevented from detaching from the support roller 3, so that the hollow fiber membrane 5 is placed more firmly. The hot plate 4 is convenient for drying the hollow fiber membrane 5. By providing multiple groups of electric heating tubes 401, the drying efficiency can be accelerated and the drying time can be reduced. The movable groove 6 is provided to facilitate the installation of the fan 8. Multiple groups of fans 8 blow air to the electric heating plate 4, and the hot air blows inward from the side wall of the drying box 1 to better dry the hollow fiber membrane 5, so that the hot air in the drying box 1 is evenly distributed, the hollow fiber membrane 5 is evenly heated, and the drying effect is better. By providing a rectangular groove 602 and a filter screen 603, dust can be prevented from entering the fan 8 and affecting the service life of the fan 8, making the device more practical.

[0035] 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 drying device for a hollow fiber membrane, comprising a drying box (1) and a hollow fiber membrane (5), characterized in that: A material inlet (101) is provided on one side wall of the drying box (1), and a material outlet (102) is provided on the other side wall of the drying box (1); The outer wall of the drying box (1) is provided with a sealing door (2), and a plurality of groups of support rollers (3) are arranged inside the drying box (1), and the two side walls of the support rollers (3) are fixedly connected to limit plates (301), and the side walls of the limit plates (301) are fixedly connected to support rods (302), and the side ends of the support rods (302) are movably connected to the inner wall of the drying box (1) through bearings, and hollow fiber membranes (5) are movably wound on the support rollers (3); An electric heating plate (4) is fixedly mounted on the inner bottom surface of the drying box (1); movable grooves (6) are symmetrically provided on the inner wall of the drying box (1); a ventilation groove (601) is provided on the inner side of the movable groove (6); a rectangular groove (602) is provided on the outer side of the movable groove (6); a mounting frame (7) is fixedly connected inside the movable groove (6); a fan (8) is mounted on the mounting frame (7); and the fan (8) is provided in multiple groups, and an output port of the fan (8) faces the electric heating plate (4).

2. A drying device for hollow fiber membrane according to claim 1, characterized in that: The feed inlet (101) is arranged parallel to the side of the discharge outlet (102), and a reinforcing plate (103) is fixedly connected to the bottom wall of the drying box (1).

3. A drying device for hollow fiber membrane according to claim 1, characterized in that: A controller (201) is fixedly mounted on the outer wall of the sealed door (2), and a handle (202) is fixedly connected to the outer wall of the sealed door (2).

4. A drying device for hollow fiber membrane according to claim 1, characterized in that: The support rollers (3) are arranged in multiple groups at even intervals.

5. A drying device for hollow fiber membrane according to claim 1, characterized in that: The electric heating plate (4) is provided with electric heating pipes (401), and a plurality of groups of the electric heating pipes (401) are evenly spaced vertically.

6. A drying device for hollow fiber membrane according to claim 1, characterized in that: The ventilation slot (601) is arranged on a parallel side of the electric heating plate (4), and a filter screen (603) is fixedly connected to the inner wall of the rectangular slot (602).

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