A roll membrane device for reverse osmosis membrane preparation
By combining the design of the fixing base, adjustment component and positioning component, and using a stepper motor to drive the positioning component, the problem of diaphragm displacement or loosening during the winding process is solved, ensuring the stability of the diaphragm and the applicability of the equipment, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG UNIV OF TECH
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-05
AI Technical Summary
Traditional film winding equipment is not reliable enough in terms of film positioning, which makes the film easy to shift or loosen during the winding process, affecting the quality and service life of the film and increasing production costs.
The design employs a combination of a fixed base, an adjustment component, a positioning component, and a limiting component. The positioning component is driven by a stepper motor, and the friction between the rubber pad and the diaphragm, along with the action of the spring sheet, ensures that the diaphragm does not shift during the winding process. The adjustment component adapts to different diaphragm thicknesses and widths.
This technology enables stable fixation of the diaphragm during the winding process, improves the quality of the film roll and the versatility of the equipment, and reduces the cost of replacing equipment due to changes in diaphragm specifications.
Smart Images
Figure CN224324834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical engineering technology, specifically to a membrane winding device for preparing reverse osmosis membranes. Background Technology
[0002] Reverse osmosis membranes are a key filtration material widely used in water treatment, chemical industry, food and other fields. Their performance and quality play a vital role in the production and development of related industries. In the process of preparing reverse osmosis membranes, the membrane winding device is one of the core pieces of equipment that determines the quality of membrane products and production efficiency.
[0003] In terms of membrane positioning, many traditional membrane winding devices use positioning methods that are not reliable enough. For example, some devices rely solely on simple clamps or fixing structures to fix the membrane. During the winding process, uneven tension on the membrane or vibration during device operation can easily cause the membrane to shift or loosen. This not only affects the quality of the membrane winding, causing problems such as wrinkles and unevenness, thus reducing the filtration performance and service life of the reverse osmosis membrane, but may also lead to an increase in the defect rate during the production process and increase production costs. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a membrane winding device for reverse osmosis membrane preparation, which solves the problem of increasing the fixing force on the membrane and ensuring that the membrane does not shift or loosen during the winding process.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a membrane winding device for reverse osmosis membrane preparation, comprising a fixed base, and further comprising: an adjustment component fixedly connected to the top of the fixed base, a stepper motor fixedly connected to the outer wall of the adjustment component; a positioning component, the outer wall of the positioning component being fixedly connected to the output end of the stepper motor via a connecting plate, the output end of the stepper motor being fixedly connected to the outer wall of the connecting plate, and a limit component fixedly connected to the top of the fixed base; the positioning component comprising a rotating cylinder, a sliding block slidably connected to the inner wall of the rotating cylinder, the sliding block being arranged in a circular array along the central axis of the rotating cylinder, and a rubber pad fixedly connected to the outer wall of the sliding block, the rubber pad being arranged in a linear array along the outer wall of the sliding block.
[0008] Preferably, a spring sheet is fixedly connected to the outer wall of the bottom of the sliding block. The spring sheet is made of elastic material and is arranged in a linear array along the outer wall of the sliding block. The outer wall of the spring sheet is in contact with the inner wall of the rotating cylinder. The outer wall of the rotating cylinder is fixedly connected to the output end of the stepper motor through a connecting plate.
[0009] Preferably, the adjusting assembly includes a sliding seat, a positioning seat is slidably connected to the inner wall of the sliding seat, inserts are slidably connected to the inner walls on both sides of the positioning seat, and a first top spring is fixedly connected to the outer wall of the insert.
[0010] Preferably, the outer wall of the sliding seat is fixedly connected to the outer wall of the stepper motor, the outer wall of the insert block is slidably connected to the inner wall of the sliding seat through a sliding groove, and the sliding groove is formed in the wall of the sliding seat. The inner wall of the sliding seat is inserted into the outer wall of the insert block through a positioning groove, and the positioning groove is formed in the wall of the sliding seat. The positioning grooves are arranged in a linear array along the outer wall of the sliding seat. The end of the first top spring away from the insert block is fixedly connected to the inner wall of the positioning seat. The bottom of the positioning seat is fixedly connected to the top of the fixed seat.
[0011] Preferably, the limiting component includes a fixed frame, a limiting cylinder rotatably connected to the outer wall of the fixed frame, a ball bearing rolledly connected to the inner wall of the limiting cylinder, the ball bearings being arranged in a linear array along the central axis of the limiting cylinder, a telescopic rod fixedly connected to the bottom of the fixed frame, the telescopic rod being arranged in a linear array along the outer wall of the fixed frame, a second top spring fixedly connected to the bottom of the fixed frame, the second top spring being arranged in a linear array along the outer wall of the fixed frame, the bottom of the second top spring being fixedly connected to the top of the fixed seat, and the top of the fixed seat being fixedly connected to the bottom of the telescopic rod.
[0012] (III) Beneficial Effects
[0013] This invention provides a membrane winding device for preparing reverse osmosis membranes. It has the following beneficial effects:
[0014] (I) The membrane winding device for preparing a reverse osmosis membrane achieves reliable positioning of the membrane by setting a positioning component and through the friction between the rubber pad and the membrane and the action of the spring sheet. Before winding the membrane, the rubber pad is in uniform contact with the surface of the membrane to provide stable friction to fix the membrane. During the winding process, the centrifugal force generated by the sliding block further increases the fixing force on the membrane, which ensures that the membrane will not be displaced or loosened during the winding process.
[0015] (II) The membrane winding device for reverse osmosis membrane preparation, by setting an adjustment component, allows the operator to easily adjust the height of the positioning component according to the different thicknesses and widths of the reverse osmosis membrane by simply moving the insert block and sliding the sliding seat. This flexible adjustment function enables the membrane winding device to adapt to the production needs of various membrane specifications, improves the versatility and applicability of the equipment, reduces the cost for enterprises to replace equipment due to changing membrane specifications, and increases the use value of the equipment. Attached Figure Description
[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a cross-sectional view of the present invention;
[0018] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;
[0019] Figure 4 This is a schematic diagram of the limiting component of this utility model;
[0020] Figure 5 This is a schematic diagram of the positioning component of this utility model;
[0021] Figure 6 This is a schematic diagram of the structure at point A of this utility model.
[0022] In the diagram: 1. Fixed base; 2. Adjustment component; 3. Positioning component; 4. Limiting component; 5. Stepper motor; 21. Sliding base; 22. Slide groove; 23. Positioning groove; 24. Positioning base; 25. Insert block; 26. First top spring; 31. Rotating cylinder; 32. Sliding block; 33. Rubber pad; 34. Spring; 41. Limiting cylinder; 42. Fixed frame; 43. Ball bearing; 44. Second top spring; 45. Telescopic rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-6This utility model provides a technical solution: a membrane winding device for reverse osmosis membrane preparation, including a fixed base 1, and further including an adjustment component 2 fixedly connected to the top of the fixed base 1, a stepper motor 5 fixedly connected to the outer wall of the adjustment component 2; a positioning component 3, the outer wall of the positioning component 3 being fixedly connected to the output end of the stepper motor 5 via a connecting plate, and a limit component 4 fixedly connected to the top of the fixed base 1; the positioning component 3 includes a rotating cylinder 31, with sliding blocks 32 slidably connected to the inner wall of the rotating cylinder 31, and the sliding blocks 32 being arranged in a circular array along the central axis of the rotating cylinder 31, and the outer wall of the sliding blocks 32 being... A rubber pad 33 is fixedly connected and arranged in a linear array along the outer wall of the sliding block 32. A spring piece 34 is fixedly connected to the outer wall of the bottom of the sliding block 32 and arranged in a linear array along the outer wall of the sliding block 32. The outer wall of the spring piece 34 is in contact with the inner wall of the rotating drum 31. The outer wall of the rotating drum 31 is fixedly connected to the output end of the stepper motor 5 through a connecting plate. The sliding block 32 rotates with the rotating drum 31. Because the sliding block 32 generates centrifugal force during rotation, the sliding block 32 moves towards the inner wall of the drum, further increasing the fixing force of the sliding block 32 on the drum.
[0025] The adjusting assembly 2 includes a sliding seat 21. A positioning seat 24 is slidably connected to the inner wall of the sliding seat 21. Insert blocks 25 are slidably connected to the inner walls on both sides of the positioning seat 24. A first top spring 26 is fixedly connected to the outer wall of the insert blocks 25. The outer wall of the sliding seat 21 is fixedly connected to the outer wall of the stepper motor 5. The outer wall of the insert blocks 25 is slidably connected to the inner wall of the sliding seat 21 through a sliding groove 22, and the sliding groove 22 is formed in the wall of the sliding seat 21. The inner wall of the sliding seat 21 is inserted into the outer wall of the insert blocks 25 through a positioning groove 23. The first top spring 26, located in the wall of the sliding seat 21, is fixedly connected at one end away from the insert block 25 to the inner wall of the positioning seat 24. The bottom of the positioning seat 24 is fixedly connected to the top of the fixed seat 1. When the device is not adjusted, the insert block 25 is partially embedded in the positioning groove 23 in the wall of the sliding seat 21 under the action of the first top spring 26, so that the positioning seat 24 and the sliding seat 21 maintain a relatively fixed position. At this time, the positioning component 3 is maintained in an initial working position by the stepper motor 5 connected to the sliding seat 21.
[0026] The limiting component 4 includes a fixed frame 42, with a limiting cylinder 41 rotatably connected to the outer wall of the fixed frame 42. A ball bearing 43 is rolledly connected to the inner wall of the limiting cylinder 41, and the ball bearing 43 is arranged in a linear array along the central axis of the limiting cylinder 41. A telescopic rod 45 is fixedly connected to the bottom of the fixed frame 42, and the telescopic rod 45 is arranged in a linear array along the outer wall of the fixed frame 42. When the diaphragm begins to wind, the edge of the diaphragm contacts the ball bearing 43 on the inner wall of the limiting cylinder 41. The ball bearing 43 can roll when the diaphragm moves, reducing the friction between the diaphragm and the limiting cylinder 41. A second top spring 44 is fixedly connected to the bottom of the fixed frame 42, and the second top spring 44 is arranged in a linear array along the outer wall of the fixed frame 42. The bottom of the second top spring 44 is fixedly connected to the top of the fixed seat 1, and the top of the fixed seat 1 is fixedly connected to the bottom of the telescopic rod 45.
[0027] The fixed base 1 serves as the basic support structure for the entire film winding device, providing a stable installation platform for other components. The adjustment component 2 mainly consists of components such as the sliding base 21, the positioning base 24, the insert block 25, and the first top spring 26. Its operation is based on the principles of mechanical sliding and elasticity. When the device is not being adjusted, the insert block 25 is partially embedded in the positioning groove 23 in the wall of the sliding base 21 under the action of the first top spring 26, so that the positioning base 24 and the sliding base 21 maintain a relatively fixed positional relationship. At this time, the positioning component 3 is maintained in an initial working position by the stepper motor 5 connected to the sliding base 21.
[0028] When the position of the positioning component 3 needs to be adjusted according to the different specifications of the reverse osmosis membrane, such as thickness and width, the operator only needs to move the two sets of inserts 25 toward the center of the positioning seat 24, thereby sliding the inserts 25 out of the positioning groove 23 of the sliding seat 21, thus releasing the restriction on the sliding seat 21. Then, the sliding seat 21 is slid to the required position. After the sliding seat 21 is slid to the required position, the force on the inserts 25 is released. Because the inserts 25 squeeze the first top spring 26 while sliding, the first top spring 26 accumulates elastic potential energy. After the force on the inserts 25 is released, the first top spring 26 can push the inserts 25 to move toward the positioning groove 23 and insert them into the positioning groove 23, thereby re-locking the position of the sliding seat 21 and the positioning seat 24. The sliding groove 22 on the sliding seat 21 provides sliding space for the inserts 25, thereby adjusting the height or angle of the positioning component 3 connected to the positioning seat 24 to adapt to the winding requirements of different membranes.
[0029] The stepper motor 5 serves as the power source. The output shaft of the stepper motor 5 is connected to the rotating cylinder 31 of the positioning component 3 through the connecting plate, which transmits the rotational motion of the motor to the positioning component 3, driving the positioning component 3 to rotate and providing power for the winding of the diaphragm. The positioning component 3 is composed of components such as the rotating cylinder 31, the sliding block 32, the rubber pad 33, and the spring 34. Its operation involves the principles of mechanical sliding, elastic deformation, and friction.
[0030] Before winding the membrane, the roll needs to be fitted onto the rotating drum 31. Then, one end of the reverse osmosis membrane is fixed onto the rotating drum. When the roll is fitted onto the rotating drum 31, the roll contacts the rubber pad 33 on the outer wall of the sliding block 32. Since the sliding block 32 is arranged in a ring array along the central axis of the rotating drum 31, and the rubber pad 33 is arranged in a linear array along the outer wall of the sliding block 32, the rubber pad 33 can contact the membrane surface evenly. The membrane is fixed inside the rotating drum 31 by friction. And through the spring piece 34 at the bottom of the sliding block 32, the sliding block 32 is continuously pushed against the inner wall of the roll, thus achieving the initial positioning of the membrane.
[0031] When the stepper motor 5 drives the rotating drum 31 to rotate, the diaphragm begins to wind. During this process, the sliding block 32 rotates with the rotating drum 31. Because the sliding block 32 generates centrifugal force during rotation, it moves towards the inner wall of the drum, further increasing the fixing force of the sliding block 32 on the drum.
[0032] The limiting assembly 4 consists of a fixed frame 42, a limiting cylinder 41, ball bearings 43, a telescopic rod 45, and a second top spring 44. Before the film winding begins, the limiting cylinder 41 is mounted on the fixed base 1 via the fixed frame 42, and the position of the limiting cylinder 41 is adjusted to correspond to the edge of the film. The inner wall of the limiting cylinder 41 is connected to the ball bearings 43, which are arranged in a linear array along the central axis of the limiting cylinder 41. At this time, the telescopic rod 45 and the second top spring 44 are in a certain initial state, providing support for the limiting cylinder 41.
[0033] When the diaphragm begins to wind, the edge of the diaphragm contacts the ball bearings 43 on the inner wall of the limiting cylinder 41. The ball bearings 43 can roll as the diaphragm moves, reducing the friction between the diaphragm and the limiting cylinder 41. As the diaphragm winds, its thickness gradually increases. At this time, the telescopic rod 45 and the second top spring 44 come into play. When the increased thickness of the diaphragm exerts upward pressure on the limiting cylinder 41, the second top spring 44 is compressed, and the telescopic rod 45 retracts, allowing the limiting cylinder 41 to move downward and adaptively adjust its position to maintain effective limiting of the diaphragm edge. When the film winding work is completed, and it is necessary to remove the film roll from the positioning assembly 3, simply stop rotating the stepper motor 5 and then move the roll away from the stepper motor 5. At this time, the ball bearings 43 on the limiting cylinder 41 reduce the friction between the limiting cylinder 41 and the film roll. The continuous upward pushing force of the second top spring 44 assists the operator in removing the roll, thereby reducing the possibility that the operator cannot remove the film roll from the positioning assembly 3 due to excessive weight.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A membrane winding device for reverse osmosis membrane preparation, comprising a fixing base (1), characterized in that, It also includes an adjustment assembly (2) fixedly connected to the top of the fixed base (1), and a stepper motor (5) fixedly connected to the outer wall of the adjustment assembly (2); The positioning component (3) has its outer wall fixedly connected to the output end of the stepper motor (5) via a connecting plate, and the top of the fixed base (1) is fixedly connected to a limit component (4). The positioning component (3) includes a rotating cylinder (31), a sliding block (32) is slidably connected to the inner wall of the rotating cylinder (31), and the sliding block (32) is arranged in a ring array along the central axis of the rotating cylinder (31). A rubber pad (33) is fixedly connected to the outer wall of the sliding block (32), and the rubber pad (33) is arranged in a linear array along the outer wall of the sliding block (32).
2. The membrane winding device for preparing a reverse osmosis membrane according to claim 1, characterized in that: A spring sheet (34) is fixedly connected to the outer wall of the bottom of the sliding block (32), and the spring sheet (34) is arranged in a linear array along the outer wall of the sliding block (32). The outer wall of the spring sheet (34) is in contact with the inner wall of the rotating cylinder (31), and the outer wall of the rotating cylinder (31) is fixedly connected to the output end of the stepper motor (5) through a connecting plate.
3. The membrane winding device for preparing a reverse osmosis membrane according to claim 1, characterized in that: The adjustment assembly (2) includes a sliding seat (21), a positioning seat (24) is slidably connected to the inner wall of the sliding seat (21), and inserts (25) are slidably connected to the inner walls on both sides of the positioning seat (24). A first top spring (26) is fixedly connected to the outer wall of the inserts (25).
4. The membrane winding device for preparing a reverse osmosis membrane according to claim 3, characterized in that: The outer wall of the sliding seat (21) is fixedly connected to the outer wall of the stepper motor (5). The outer wall of the insert (25) is slidably connected to the inner wall of the sliding seat (21) through the sliding groove (22), and the sliding groove (22) is opened in the wall of the sliding seat (21). The inner wall of the sliding seat (21) is inserted into the outer wall of the insert (25) through the positioning groove (23), and the positioning groove (23) is opened in the wall of the sliding seat (21). The end of the first top spring (26) away from the insert (25) is fixedly connected to the inner wall of the positioning seat (24). The bottom of the positioning seat (24) is fixedly connected to the top of the fixed seat (1).
5. The membrane winding device for preparing a reverse osmosis membrane according to claim 1, characterized in that: The limiting component (4) includes a fixed frame (42), the outer wall of the fixed frame (42) is rotatably connected to a limiting cylinder (41), the inner wall of the limiting cylinder (41) is rolled with balls (43), and the balls (43) are arranged in a linear array along the central axis of the limiting cylinder (41). The bottom of the fixed frame (42) is fixedly connected to a telescopic rod (45), and the telescopic rod (45) is arranged in a linear array along the outer wall of the fixed frame (42). The bottom of the fixed frame (42) is fixedly connected to a second top spring (44), and the second top spring (44) is arranged in a linear array along the outer wall of the fixed frame (42).
6. The membrane winding device for preparing a reverse osmosis membrane according to claim 5, characterized in that: The bottom of the second top spring (44) is fixedly connected to the top of the fixed seat (1), and the top of the fixed seat (1) is fixedly connected to the bottom of the telescopic rod (45).