A nanofiltration membrane casting device

Abstract

The utility model provides a kind of nanofiltration membrane casting device, it is related to nanofiltration membrane production technical field, including first box, second box and third box, the first box, second box and third box both ends bottom are fixed with connecting rod, six The connecting rod top is rotatably connected with rotating roller, the middle part of the first box top is fixed with servo motor, the power output end of the servo motor is fixed with driving gear.This device by nanofiltration membrane body is placed in the rotating roller outside of the connecting rod top located in the left side of first box, first pre-rotating a period of time before smearing two smearing roller, so that casting membrane liquid can be smearing full smearing roller, subsequently nanofiltration membrane body sequentially passes through multiple rotating rollers, nanofiltration membrane body is coated in first box, it is gelled in second box interior, it is rinsed in third box interior, finally it is wound, to reach the effect of once processing completion and improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of nanofiltration membrane production technology, and more specifically, it relates to a nanofiltration membrane casting device. Background Technology

[0002] Nanofiltration is a novel membrane separation technology developed in the late 1980s, falling between reverse osmosis and ultrafiltration. It was initially called "low-pressure reverse osmosis" or "loose reverse osmosis." Nanofiltration technology was developed to meet the needs of industrial water softening and to reduce costs. Nanofiltration membranes have a molecular weight cutoff between 200 and 2000, and a pore size of approximately 1 nm, making them suitable for separating dissolved components approximately 1 nm in size; hence the name "nanofiltration."

[0003] Based on the above, the following problems were found: Nanofiltration membranes need to undergo casting during production. The casting process includes coating, gelling, and rinsing. Existing casting is usually done in a distributed manner, and each processing requires unwinding and rewinding, which not only affects the processing speed, but also makes the raw materials susceptible to external contamination during transportation, affecting subsequent use.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a nanofiltration membrane casting device to achieve a more practical purpose. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a nanofiltration membrane casting device, which solves the problem that current processes require unwinding and rewinding each time, which not only affects processing speed but also easily causes external contamination of raw materials during transportation, affecting subsequent use.

[0006] This utility model provides a nanofiltration membrane casting device, which is achieved by the following specific technical means:

[0007] A nanofiltration membrane casting device includes a first chamber, a second chamber, and a third chamber. Connecting rods are fixed to the bottom of both ends of the first, second, and third chambers. Rotating rollers are rotatably connected to the tops of the six connecting rods. A servo motor is fixed to the center of the top of the first chamber, and a drive gear is fixed to the power output end of the servo motor. Applying rollers are rotatably connected to both sides of the center of the inner wall of the first chamber, and driven gears are fixed to the tops of the two applying rollers. A casting liquid tank is fixed to the top of the second chamber, and a first liquid guide tube is fixed to the bottom of one side of the casting liquid tank. A high-pressure nozzle is fixed to the bottom of the first liquid guide tube. A heating rod is fixed to the inner wall of the second chamber. A rinsing liquid tank is located at the top height of the outer wall of the third chamber, and a second liquid guide tube is fixed to the inner wall of the third chamber.

[0008] Furthermore, the driving gear meshes with the two driven gears, with the driving gear located in the middle of the two driven gears.

[0009] Furthermore, the high-pressure nozzle is disposed through the top of the outer wall of the first housing, and there are two high-pressure nozzles, which are respectively located on the top of one side of the two coating rollers.

[0010] Furthermore, the heating rods are provided in two sets, and the two sets of heating rods are respectively located on both sides of the inner wall of the second box. Each set of heating rods has multiple heating rods, and the multiple heating rods are arranged vertically at equal intervals.

[0011] Furthermore, a second liquid guide pipe is fixed to the middle of both sides of the inner wall of the third box, and both second liquid guide pipes are connected through the rinsing liquid tank. Spray holes are vertically and equidistantly opened on opposite sides of the two second liquid guide pipes.

[0012] Furthermore, a water storage tank is provided at the bottom of the inner wall of the third box, and a drain pipe is provided through the bottom of the middle part of one side of the third box.

[0013] Furthermore, a nanofiltration membrane is placed on the outer wall of the rotating roller at the top of the connecting rod on the left side of the first housing.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, the nanofiltration membrane is placed outside the rotating roller at the top of the connecting rod on the left side of the first box. Before coating, the two coating rollers are pre-rotated for a period of time so that the casting liquid can cover the coating rollers. Then, the nanofiltration membrane is passed through multiple rotating rollers in sequence. The nanofiltration membrane is coated in the first box, gelled in the second box, rinsed in the third box, and finally wound up, thereby achieving the effect of completing the process in one go and improving production efficiency.

[0016] 2. In this invention, a high-pressure nozzle sprays the casting liquid onto the top of the coating roller. A servo motor drives the drive gear to rotate, which in turn drives the two driven gears to rotate, thereby causing the two coating rollers to rotate in opposite directions. This keeps the nanofiltration membrane in the middle of the two coating rollers for moving and coating, thus achieving a better processing quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram of the first housing of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the second housing of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the third box of this utility model.

[0021] The correspondence between the component names in the diagram and the attached drawing numbers is as follows:

[0022] 1. First chamber; 11. Casting solution tank; 12. First liquid guide pipe; 13. High-pressure nozzle; 14. Servo motor; 15. Drive gear; 16. Driven gear; 17. Coating roller; 2. Second chamber; 21. Heating rod; 3. Third chamber; 31. Rinse solution tank; 32. Water storage tank; 33. Drain pipe; 34. Second liquid guide pipe; 35. Spray nozzle; 4. Connecting rod; 5. Rotating roller; 6. Nanofiltration membrane. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; in addition, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] This utility model provides a nanofiltration membrane casting device, including a first box 1, a second box 2, and a third box 3. Connecting rods 4 are fixed at the bottom of both ends of the first box 1, the second box 2, and the third box 3. Rotating rollers 5 are rotatably connected to the top of each of the six connecting rods 4. A servo motor 14 is fixed in the middle of the top of the first box 1. A drive gear 15 is fixed at the power output end of the servo motor 14. Applying rollers 17 are rotatably connected to both sides of the middle of the inner wall of the first box 1. Driven gears 16 are fixed at the top of each of the two applying rollers 17. A casting liquid tank 11 is fixed in the top of the second box 2. A first liquid guide pipe 12 is fixed in the bottom of one side of the casting liquid tank 11. A high-pressure nozzle 13 is fixed in the bottom of the first liquid guide pipe 12. An electric heating rod 21 is fixed in the inner wall of the second box 2. A rinsing liquid tank 31 is located at the top height of the outer wall of the third box 3. A second liquid guide pipe 34 is fixed in the inner wall of the third box 3. Water pumps are provided at the outlets of the casting liquid tank 11 and the rinsing liquid tank 31.

[0028] The active gear 15 meshes with two driven gears 16. The active gear 15 is located in the middle of the two driven gears 16. The active gear 15 is driven to rotate by the servo motor 14, which in turn drives the two driven gears 16 to rotate, thereby driving the two coating rollers 17 to rotate in opposite directions, keeping the nanofiltration membrane 6 in the middle of the two coating rollers 17 for moving and coating.

[0029] The high-pressure nozzle 13 is installed through the top of the outer wall of the first housing 1, and there are two high-pressure nozzles 13. The two high-pressure nozzles 13 are respectively located on the top of one side of the two coating rollers 17. The casting liquid is introduced into the two high-pressure nozzles 13 through the water pump inside the casting liquid tank 11 from the first liquid guide pipe 12. The casting liquid is then sprayed onto the top of the coating rollers 17 through the high-pressure nozzles 13. Before coating, the two coating rollers 17 are pre-rotated for a period of time so that the casting liquid can cover the coating rollers 17.

[0030] There are two sets of heating rods 21, which are located on both sides of the inner wall of the second chamber 2. Each set of heating rods 21 has multiple rods, which are arranged vertically at equal intervals. By energizing the multiple heating rods 21, the interior of the second chamber 2 is kept at a high temperature, which allows the nanofiltration membrane 6 coated with casting solution to dry quickly.

[0031] The third housing 3 has two second liquid guide pipes 34 fixed in the middle of the inner walls on both sides. Both second liquid guide pipes 34 are connected to the rinsing liquid tank 31. Both second liquid guide pipes 34 have vertically and equally spaced water spray holes 35 on opposite sides. The dried nanofiltration membrane 6 passes through the inside of the third housing 3 and the water pump inside the rinsing liquid tank 31 introduces the rinsing liquid into the second liquid guide pipes 34. Then, the rinsing liquid is evenly sprayed onto the outside of the nanofiltration membrane 6 through the water spray holes 35 for rinsing.

[0032] The bottom of the inner wall of the third box 3 is provided with a water storage tank 32, and a drain pipe 33 is provided through the bottom of the middle part of one side of the third box 3. When spraying, the excess rinsing liquid flows into the water storage tank 32 at the bottom of the third box 3 and is finally discharged from the drain pipe 33.

[0033] Among them, a nanofiltration membrane 6 is placed on the outer wall of the rotating roller 5 at the top of the connecting rod 4 on the left side of the first housing 1. The bottom end of the rotating roller 5 at the top of the connecting rod 4 on the right side of the third housing 3 is fixed to the power output end of the motor. The rotating roller 5 is driven by the motor to rotate and wind up the nanofiltration membrane 6.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In this invention, the nanofiltration membrane 6 is first placed outside the rotating roller 5 at the top of the connecting rod 4 on the left side of the first housing 1. Before coating, the two coating rollers 17 are pre-rotated for a period of time to ensure that the casting liquid can cover the coating rollers 17. Then, the nanofiltration membrane 6 is passed through multiple rotating rollers 5 in sequence. The bottom end of the rotating roller 5 at the top of the connecting rod 4 on the right side of the third housing 3 is fixed to the power output end of the motor. The motor drives the rotating roller 5 to rotate and wind up the nanofiltration membrane 6. At this time, the casting liquid is introduced from the first liquid guide pipe 12 into the two high-pressure nozzles 13 by the water pump inside the casting liquid tank 11. Then, the casting liquid is sprayed onto the top of the coating roller 17 through the high-pressure nozzles 13. The servo motor 14 drives the drive gear 15 to rotate, which in turn drives the two driven gears 16 to rotate, thereby driving the two coating rollers 17 to rotate in opposite directions. This keeps the nanofiltration membrane 6 in the middle of the two coating rollers 17 for moving and coating. By energizing multiple heating rods 21, the inside of the second chamber 2 is kept at a high temperature, which allows the nanofiltration membrane 6 coated with casting solution to dry quickly. The water pump inside the rinsing solution tank 31 introduces the rinsing solution into the second liquid guide pipe 34, and then sprays it evenly on the outside of the nanofiltration membrane 6 through the spray nozzles 35 for rinsing. Excess rinsing solution during spraying flows into the water storage tank 32 at the bottom of the third chamber 3, and is finally discharged from the drain pipe 33.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A nanofiltration membrane casting device, comprising a first housing (1), a second housing (2), and a third housing (3), characterized in that: The bottom ends of the first box (1), the second box (2) and the third box (3) are all fixed with connecting rods (4). The top of each of the six connecting rods (4) is rotatably connected with a rotating roller (5). The middle of the top of the first box (1) is fixed with a servo motor (14). The power output end of the servo motor (14) is fixed with a drive gear (15). The middle sides of the inner wall of the first box (1) are rotatably connected with a coating roller (17). The top of each of the two coating rollers (17) is fixed with a driven gear (16). The top of the second box (2) is fixed with a casting liquid tank (11). The bottom of one side of the casting liquid tank (11) is fixed with a first liquid guide pipe (12). The bottom of the first liquid guide pipe (12) is fixed with a high-pressure nozzle (13). The inner wall of the second box (2) is fixed with a heating rod (21). The top of the outer wall of the third box (3) is a rinsing liquid tank (31). The inner wall of the third box (3) is fixed with a second liquid guide pipe (34).

2. The nanofiltration membrane casting device as described in claim 1, characterized in that: The driving gear (15) meshes with the two driven gears (16), and the driving gear (15) is located in the middle of the two driven gears (16).

3. The nanofiltration membrane casting device as described in claim 1, characterized in that: The high-pressure nozzle (13) is installed through the top of the outer wall of the first housing (1), and there are two high-pressure nozzles (13), which are located on the top of one side of the two coating rollers (17).

4. The nanofiltration membrane casting device as described in claim 1, characterized in that: The heating rods (21) are provided in two sets. The two sets of heating rods (21) are located on both sides of the inner wall of the second box (2). Each set of heating rods (21) has multiple heating rods (21), and the multiple heating rods (21) are arranged vertically at equal intervals.

5. The nanofiltration membrane casting device as described in claim 1, characterized in that: The inner wall of the third box (3) is fixed with a second liquid guide pipe (34) on both sides of the middle. Both second liquid guide pipes (34) are connected to the rinsing liquid tank (31) through the pipe. Both second liquid guide pipes (34) have vertical spray holes (35) at equal intervals on opposite sides.

6. The nanofiltration membrane casting apparatus as described in claim 5, characterized in that: A water storage tank (32) is provided at the bottom of the inner wall of the third box (3), and a drain pipe (33) is provided through the bottom of the middle part of one side of the third box (3).

7. The nanofiltration membrane casting device as described in claim 1, characterized in that: A nanofiltration membrane (6) is placed on the outer wall of the rotating roller (5) at the top of the connecting rod (4) located on the left side of the first housing (1).

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