Composite diaphragm coating machine for alkaline electrolytic bath

Abstract

The utility model discloses a composite diaphragm coating machine for an alkaline electrolytic bath, which relates to the technical field of diaphragm coating machines, and comprises a base, vertical plates, a material pool, a water pool, a sprayer, a coating component, a scraping component, a tensioning component and an adjusting component, the two sides of the base are respectively provided with the vertical plates, the material pool is fixedly arranged at one end of the base, and the water pool is fixedly arranged at the other end of the base. The coating assembly is arranged at one end of the material pool, the water pool is fixedly arranged at the other end of the base, the sprayer is arranged at one end of the water pool, the scraping assemblies are arranged at the other end of the material pool and the other end of the water pool, the tensioning assembly is arranged between the water pool and the material pool, and the adjusting assembly is arranged on the vertical plate. The base and the vertical plate provide a stable supporting structure for the whole diaphragm coating machine, it is ensured that the machine is kept stable in the operation process, and the situation that the coating precision is affected due to shaking is avoided. The vertical plates are opposite to the two sides of the base to form a frame, and installation and layout of other assemblies are facilitated. The base serves as a basic bearing part and bears the weight of each assembly.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm coating machine technology, and in particular to a composite diaphragm coating machine for alkaline electrolytic cells. Background Technology

[0002] Composite membranes are one of the key internal components of alkaline electrolyzers. Their main function is to uniformly coat the diaphragm with coating material during the diaphragm production process. Existing coating machines have the following shortcomings: improper cleaning of impurities and residues on the diaphragm surface, low efficiency in recovering excess coating material scraped off by the scraper, and inability to adjust the scraper and guide plate. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a composite diaphragm coating machine for alkaline electrolytic cells.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This application provides a composite diaphragm coating machine for an alkaline electrolytic cell, including a base, upright plates, a material tank, a water tank, a sprayer, a coating assembly, a scraping assembly, a tensioning assembly, and an adjusting assembly. The upright plates are respectively arranged on both sides of the base. The material tank is fixedly arranged at one end of the base, and the coating assembly is arranged at one end of the material tank. The water tank is fixedly arranged at the other end of the base, and the sprayer is arranged at one end of the water tank. The scraping assembly is arranged at both the other end of the material tank and the other end of the water tank. The tensioning assembly is arranged between the water tank and the material tank. The adjusting assembly is arranged on the upright plates.

[0006] Furthermore, the scraping assembly includes a fixing plate, a first threaded shaft, a first fixing block, a first scraper, a second fixing block, and a second scraper. The fixing plates are respectively fixed to the material pool and the water pool. Each fixing plate has a first through groove in its middle and a threaded hole in its top. The first threaded shaft passes through the threaded hole and is fixedly connected to the first fixing block. The first scraper is provided at the bottom of each first fixing block. The second fixing blocks are provided at the bottom of the first through groove and the second scraper is provided on each second fixing block.

[0007] Furthermore, both the material pool and the water pool are fixedly connected to the vertical plate.

[0008] Furthermore, a guide plate is provided on one end of each of the second fixing blocks, and a barrier plate is fixedly connected to both sides of the guide plate.

[0009] Furthermore, the end of the guide plate is disposed within the water tank and the material tank.

[0010] Furthermore, the adjusting assembly includes a second through groove, a moving block, and a second threaded shaft. The second through groove is symmetrically arranged on the upright plate. A first bearing is provided at the bottom of each of the second through grooves. The moving block is provided in each of the second through grooves. The first bearing is located below the moving block. A partition block is provided between the first bearing and the moving block. A first threaded through hole is provided at the top of the upright plate. The second through groove communicates with the first threaded through groove. A second threaded through hole is provided in the middle of the moving block. A blind hole is provided at the top of the partition block. The second threaded shaft passes through the first threaded through hole, the second threaded through hole, and the blind hole in sequence. The second threaded shaft is rotatably connected to the first threaded through hole, the second threaded through hole, and the blind hole.

[0011] Furthermore, the coating assembly includes a coating roller, a motor, a motor bracket, and a pressure roller. The coating roller is disposed in the material tank and is rotatably connected to the first bearing. The coating roller passes through the first bearing and is fixedly connected to the motor. The motor is disposed on the motor bracket, which is disposed on the outside of the vertical plate. The two ends of the pressure roller are rotatably connected to the moving block through the second bearing, and the pressure roller is disposed above the coating roller.

[0012] Furthermore, the tensioning assembly includes a U-shaped frame, a tensioning roller, and an electric push rod. The vertical plate has symmetrically opened limit grooves, and the U-shaped frame is slidably arranged in each of the limit grooves. The two ends of the tensioning roller are rotatably connected to the U-shaped frame through a third bearing, and the electric push rod is provided at the bottom of the U-shaped frame.

[0013] Furthermore, there are multiple electric actuators.

[0014] Furthermore, the ventilation holes are symmetrically provided on the upright plate.

[0015] Furthermore, the bottom of the base is fixedly provided with multiple support feet.

[0016] The beneficial effects of this utility model are:

[0017] 1) The water tank serves as the water source for the cleaning process. Together with a sprayer, it cleans the coated diaphragm, removing excess coating material or impurities from its surface to ensure cleanliness and product quality. The sprayer evenly distributes water from the tank onto the diaphragm surface, effectively and efficiently cleaning the diaphragm and improving cleaning results. Compared to other simpler cleaning methods, spraying allows for more comprehensive water coverage of the diaphragm, ensuring uniform cleaning and reducing product defects caused by incomplete cleaning. The specific operation of cleaning the diaphragm involves atomizing water through high-pressure spraying, ensuring full contact between the water and the diaphragm surface for thorough cleaning. This is a key component in ensuring the quality of the diaphragm product.

[0018] 2) By rotating the first threaded shaft, the height of the first fixed block can be adjusted, thereby precisely adjusting the distance and pressure between the first scraper and the diaphragm. This adjustability allows the scraping assembly to adapt to diaphragms of different thicknesses and materials, as well as different scraping process requirements, improving the versatility and adaptability of the equipment.

[0019] 3) The guide vanes direct excess coating material scraped from the diaphragm or wastewater from cleaning into the material tank or water pool more smoothly, preventing splashing or overflow and maintaining a clean working environment while reducing contamination of other equipment components. The baffles on both sides prevent liquid from overflowing from the sides of the guide vanes, further improving the accuracy and effectiveness of the flow, ensuring that the liquid flows completely into the corresponding pool along the preset path. This helps improve material recycling and the efficiency of cleaning water recycling, optimizes the production process, and also facilitates equipment maintenance. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the coating machine;

[0021] Figure 2 This is a 3D view of the coating machine;

[0022] In the diagram, 1-base, 2-vertical plate, 3-material pool, 4-water pool, 5-sprayer, 6-fixed plate, 7-first threaded shaft, 8-first fixed block, 9-first scraper, 10-second fixed block, 11-second scraper, 12-first through groove, 13-guide plate, 14-barrier plate, 15-second through groove, 16-moving block, 17-second threaded shaft, 18-coating roller, 19-motor, 20-motor bracket, 21-pressure roller, 22-U-shaped frame, 23-tensioning roller, 24-electric push rod, 25-limiting groove, 26-vent hole, 27-support foot. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See Figures 1-2 This utility model provides a technical solution:

[0025] A composite diaphragm coating machine for an alkaline electrolytic cell includes a base 1, upright plates 2, a material tank 3, a water tank 4, a sprayer 5, a coating assembly, a scraping assembly, a tensioning assembly, and an adjusting assembly. Upright plates 2 are respectively installed on both sides of the base 1. The material tank 3 is fixedly installed at one end of the base 1, and the coating assembly is installed at one end of the material tank 3. The water tank 4 is fixedly installed at the other end of the base 1, and the sprayer 5 is installed at one end of the water tank 4. Scraping assemblies are installed at the other ends of both the material tank 3 and the water tank 4. The tensioning assembly is located between the water tank 4 and the material tank 3. The adjusting assembly is installed on the upright plates 2. The base 1 and upright plates 2 provide a stable support structure for the entire diaphragm coating machine, ensuring the machine remains stable during operation and preventing shaking from affecting coating accuracy. The upright plates 2, positioned opposite each other on the base 1, form a frame, facilitating the installation and layout of other components. The base 1, as the basic load-bearing component, bears the weight of all the components. The upright plate 2 provides an installation position for adjustment components, serving to position and support other components, maintaining their relative positions and ensuring the overall stability and reliability of the equipment. The material tank 3, as a container for storing coating material, ensures a continuous and stable material supply during the coating process, guaranteeing the continuity of the coating operation. Simultaneously, its fixed placement at one end of the base 1 allows the coating components to easily access the coating material, simplifying the material transport path and improving work efficiency. The water tank 4 serves as a water source for the cleaning process, working in conjunction with the sprayer 5 to clean the coated diaphragm, removing excess coating material or impurities from the diaphragm surface, ensuring diaphragm cleanliness and product quality. The sprayer 5 evenly sprays water from the water tank 4 onto the diaphragm surface, effectively and efficiently cleaning the diaphragm and improving cleaning results. Compared to other simple cleaning methods, spraying allows for more comprehensive water coverage of the diaphragm, ensuring uniform cleaning and reducing product defects caused by incomplete cleaning. The specific operation of cleaning the diaphragm involves atomizing water through high-pressure spraying to ensure full contact between the water and the diaphragm surface, thus achieving cleaning and is a key component in ensuring diaphragm product quality. The coating assembly is responsible for evenly coating the diaphragm with the coating material from the material tank 3, and is the core component for achieving the diaphragm coating function. The tensioning assembly ensures that the diaphragm remains taut throughout the coating and cleaning process, preventing slackness and wrinkles, thereby improving the quality of coating and cleaning. The adjustment assembly, located on the vertical plate 2, allows for position or parameter adjustment of components associated with the vertical plate 2 (such as the coating assembly). This adjustment function enables the equipment to flexibly adjust the working status of each component according to different production needs and diaphragm characteristics, enhancing the equipment's versatility and adaptability, and improving production efficiency and product quality.

[0026] In some embodiments, the scraping assembly includes a fixing plate 6, a first threaded shaft 7, a first fixing block 8, a first scraper 9, a second fixing block 10, and a second scraper 11. The fixing plate 6 is fixed to the material pool 3 and the water pool 4, respectively. A first through groove 12 is formed in the middle of each fixing plate 6, and a threaded hole is formed in the top of each fixing plate 6. The first threaded shaft 7 passes through the threaded hole and is fixedly connected to the first fixing block 8. The first scraper 9 is provided at the bottom of each first fixing block 8, and the second fixing block 10 is located at the bottom of each first through groove 12. A second scraper 11 is provided on each second fixing block 10. The fixing plate 6 provides the mounting base for the entire scraping assembly, ensuring that the first scraper 9 and the second scraper 11 can accurately act on the corresponding positions in the material pool 3 and the water pool 4, guaranteeing the stability and accuracy of the scraping operation. The first through groove 12 and the threaded hole facilitate the installation and adjustment of other components. By rotating the first threaded shaft 7, the height of the first fixing block 8 can be adjusted, thereby precisely adjusting the distance and pressure between the first scraper 9 and the diaphragm. This adjustability allows the scraping assembly to adapt to diaphragms of different thicknesses and materials, as well as different scraping process requirements, improving the equipment's versatility and adaptability. The first scraper 9 and the second scraper 11 work together to remove excess coating material from the diaphragm surface, resulting in a more uniform coating thickness and improved coating quality. The overall function of the scraping assembly is to trim the diaphragm surface, remove excess coating material, and ensure that the coating material on the diaphragm meets the required thickness and uniformity, thus improving product quality.

[0027] In some embodiments, both the material tank 3 and the water tank 4 are fixedly connected to the vertical plate 2. This fixed connection further enhances the stability of the overall equipment structure. This connection method helps maintain the precise relative positional relationship between the components, thereby improving the accuracy and consistency of the coating and cleaning processes and ensuring the stability of product quality.

[0028] In some embodiments, a guide plate 13 is provided on one end of each of the second fixing blocks 10, and baffle plates 14 are fixedly connected to both sides of the guide plate 13. The guide plate 13 guides excess coating material scraped from the diaphragm or wastewater from cleaning, allowing it to flow more smoothly into the material tank 3 or water tank 4, preventing splashing or random flow of the liquid, thus maintaining a clean working environment and reducing contamination of other equipment components. The baffle plates 14 on both sides prevent liquid from overflowing from the sides of the guide plate 13, further improving the accuracy and effectiveness of the flow, ensuring that the liquid flows completely into the corresponding tank along the preset path. This helps improve the material recycling rate and the efficiency of cleaning water recycling, optimizes the production process, and also facilitates equipment maintenance.

[0029] In some embodiments, the ends of the guide plate 13 are disposed within the water tank 4 and the material tank 3. This placement ensures that excess coating material or wastewater flowing down from the guide plate 13 accurately enters the material tank 3 or the water tank 4. This precise positioning design minimizes liquid loss and leakage risks during transport, further improving material recovery efficiency and cleaning water utilization.

[0030] In some embodiments, the adjustment assembly includes a second through groove 15, a movable block 16, and a second threaded shaft 17. The second through grooves 15 are symmetrically arranged on the vertical plate 2. A first bearing is provided at the bottom of each second through groove 15. A movable block 16 is provided within each second through groove 15. The first bearing is located below the movable block 16, and a partition block is provided between the first bearing and the movable block 16. A first threaded through hole is formed at the top of the vertical plate 2, and the second through groove 15 communicates with the first threaded through groove. A second threaded through hole is formed in the middle of the movable block 16. A blind hole is formed at the top of the partition block. The second threaded shaft 17 passes sequentially through the first threaded through hole, the second threaded through hole, and the blind hole, and is rotatably connected to the first threaded through hole, the second threaded through hole, and the blind hole. The second through groove 15 provides a moving track for the movable block 16, limiting its movement direction so that it can only move up and down along the direction of the second through groove 15, thus improving the adjustment accuracy of the entire adjustment assembly. Simultaneously, the symmetrical arrangement on the vertical plate 2 ensures consistency in adjustment on both sides, helping to maintain the overall balance and stability of the equipment. The movable block 16 is positioned within the second through slot 15 and can move under the drive of the second threaded shaft 17, making the adjustment operation more flexible and convenient, and improving the equipment's adaptability to different process requirements and diaphragm specifications. By rotating the second threaded shaft 17, the movement distance of the movable block 16 within the second through slot 15 can be precisely controlled using the threaded transmission principle. This threaded transmission-based adjustment method offers high adjustment accuracy, enabling minute positional changes and meeting the high-precision requirements of different processes for component position adjustment. The separator separates the first bearing from the movable block 16, preventing interference between them during movement and ensuring their proper functioning. It provides a stable support structure for the first bearing and also provides a connection and positioning point for the second threaded shaft 17, helping to enhance the overall stability of the adjustment assembly and making the fit between components tighter and more reasonable. The first threaded through hole and the second threaded shaft 17 realize the threaded transmission adjustment function. This design allows the second threaded shaft 17 to effectively drive the movable block 16 to move up and down within the second through slot 15, making the adjustment process precise and controllable. The threaded connection also has a self-locking property. When adjusted to the appropriate position, the second threaded shaft 17 can remain fixed, preventing the moving block 16 from moving accidentally due to external forces or other factors, thus ensuring the stability after adjustment. A blind hole is opened at the top of the partition block, providing a space for the second threaded shaft 17 to connect and be positioned, further enhancing the stability of the second threaded shaft 17 in the adjustment assembly.

[0031] In some embodiments, the coating assembly includes a coating roller 18, a motor 19, a motor bracket 20, and a pressure roller 21. The coating roller 18 is disposed in the material tank 3 and is rotatably connected to a first bearing. The coating roller 18 passes through the first bearing and is fixedly connected to the motor 19. The motor 19 is disposed on the motor bracket 20, which is located on the outer side of the upright plate 2. The two ends of the pressure roller 21 are rotatably connected to the moving block 16 via second bearings, and the pressure roller 21 is disposed above the coating roller 18. The coating roller 18, as the component that directly contacts and transfers the coating material onto the diaphragm, has surface characteristics and rotational accuracy that directly affect the uniformity and quality of the coating. Rotational connection with the first bearing allows for smooth rotation, ensuring uniform adhesion of the coating material to its surface and stable coating of the material onto the diaphragm during rotation. The coating roller 18, by picking up the coating material from the material tank 3 and uniformly coating it onto the diaphragm above it using its own rotational motion, is the core execution component for realizing the coating process. Motor 19 provides power for the rotation of coating roller 18. By precisely controlling the speed of motor 19, the coating speed of coating roller 18 can be accurately adjusted to meet the coating speed requirements of different coating processes, ensuring the stability and consistency of coating quality. Furthermore, motor 19 is mounted on motor bracket 20, which is located on the outside of vertical plate 2, facilitating the installation, debugging, and routine maintenance of motor 19. Fixing the position of motor 19 ensures its stability during operation and optimizes its installation layout, making it easier for operators to operate and maintain. Working in conjunction with coating roller 18, it applies pressure to improve the coating effect, and its position can be adjusted using the adjustment components, making the equipment suitable for coating various specifications of diaphragms. The first and second bearings in the coating assembly provide support and reduce friction, ensuring the normal rotation of coating roller 18 and pressure roller 21, and are crucial components for maintaining the efficient operation of the coating assembly.

[0032] In some embodiments, the tensioning assembly includes a U-shaped frame 22, a tensioning roller 23, and an electric push rod 24. Limiting grooves 25 are symmetrically formed on the vertical plate 2, and the U-shaped frame 22 is slidably disposed within each limiting groove 25. Both ends of the tensioning roller 23 are rotatably connected to the U-shaped frame 22 via third bearings. The electric push rod 24 is disposed at the bottom of the U-shaped frame 22. The limiting grooves 25, symmetrically formed on the vertical plate 2, guide the movement of the U-shaped frame 22, ensuring the accuracy and stability of the tensioning roller 23's position adjustment, and are an important structure for maintaining the normal operation of the tensioning assembly. The third bearings are installed between the two ends of the tensioning roller 23 and the U-shaped frame 22, greatly reducing the frictional force when the tensioning roller 23 rotates, allowing it to rotate more smoothly and reducing energy loss. The shape design of the U-shaped frame 22 facilitates the installation and fixing of the tensioning roller 23, while its two ends sliding within the limiting grooves 25 precisely guide the movement direction of the U-shaped frame 22, ensuring the stability and straightness of the tensioning roller 23's movement. Furthermore, the U-shaped frame 22 connects the tension roller 23 to the electric push rod 24, enabling the electric push rod 24 to effectively drive the tension roller 23 for position adjustment, thereby regulating the tension of the diaphragm. The tension roller 23 is in direct contact with the diaphragm, applying tension to keep the diaphragm taut during coating and cleaning processes, preventing wrinkles and loosening, and ensuring stable operation of the diaphragm within the equipment. The tension roller 23 is rotatably connected to the U-shaped frame 22 at both ends via third bearings, allowing for flexible rotation and reducing friction with the diaphragm, preventing damage to the diaphragm surface and ensuring product quality.

[0033] In some embodiments, there are multiple electric actuators 24. Through multi-point driving and coordinated operation, the accuracy and uniformity of diaphragm tension adjustment are improved, enhancing the reliability of equipment operation and ensuring stable and effective tension control of the diaphragm under different production conditions.

[0034] In some embodiments, ventilation holes 26 are symmetrically provided on the upright plate 2. The symmetrical arrangement of the ventilation holes 26 on the upright plate 2 optimizes the internal air circulation path of the equipment, creates a good operating environment for the equipment, ensures stable operation of the equipment, reduces failures caused by factors such as heat, humidity, and air pressure, and thus improves the reliability and durability of the equipment.

[0035] In some embodiments, a plurality of support feet 27 are fixedly provided on the bottom of the base 1. The support feet 27 are key components for connecting the equipment to the ground, providing a stable support foundation for the equipment. By adjusting the level and adapting to different ground conditions, they ensure that the equipment can operate normally in various environments, while protecting the base 1 and maintaining the long-term stability and reliability of the equipment.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installation", "connection", "fixing", "hinged" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A composite diaphragm coating machine for an alkaline electrolytic cell, characterized in that: The system includes a base (1), a vertical plate (2), a material tank (3), a water tank (4), a sprayer (5), a coating assembly, a scraping assembly, a tensioning assembly, and an adjusting assembly. The vertical plate (2) is provided on both sides of the base (1). The material tank (3) is fixedly provided at one end of the base (1). The coating assembly is provided at one end of the material tank (3). The water tank (4) is fixedly provided at the other end of the base (1). The sprayer (5) is provided at one end of the water tank (4). The scraping assembly is provided at the other end of both the material tank (3) and the water tank (4). The tensioning assembly is provided between the water tank (4) and the material tank (3). The adjusting assembly is provided on the vertical plate (2). The scraping assembly includes a fixing plate (6), a first threaded shaft (7), a first fixing block (8), a first scraper (9), a second fixing block (10), and a second scraper (11). The fixing plate (6) is fixed on the material pool (3) and the water pool (4) respectively. The middle part of the fixing plate (6) is provided with a first through groove (12), and the top of the fixing plate (6) is provided with a threaded hole. The first threaded shaft (7) passes through the threaded hole and is fixedly connected to the first fixing block (8). The bottom of the first fixing block (8) is provided with the first scraper (9). The second fixing block (10) is provided at the bottom of the first through groove (12), and the second fixing block (10) is provided with the second scraper (11).

2. The composite diaphragm coating machine for an alkaline electrolytic cell according to claim 1, characterized in that: Both the material pool (3) and the water pool (4) are fixedly connected to the vertical plate (2).

3. The composite diaphragm coating machine for an alkaline electrolytic cell according to claim 2, characterized in that: Each of the second fixing blocks (10) is provided with a guide plate (13) at one end, and a barrier plate (14) is fixedly connected to both sides of the guide plate (13).

4. The composite diaphragm coating machine for an alkaline electrolytic cell according to claim 3, characterized in that: The end of the guide plate (13) is located inside the water tank (4) and the material tank (3).

5. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 4, characterized in that: The adjustment assembly includes a second through groove (15), a moving block (16), and a second threaded shaft (17). The second through groove (15) is symmetrically arranged on the vertical plate (2). A first bearing is provided at the bottom of each of the second through grooves (15). The moving block (16) is provided in each of the second through grooves (15). The first bearing is located below the moving block (16). A partition block is provided between the first bearing and the moving block (16). A first threaded through hole is provided at the top of the vertical plate (2). The second through groove (15) communicates with the first through groove. A second threaded through hole is provided in the middle of the moving block (16). A blind hole is provided at the top of the partition block. The second threaded shaft (17) passes through the first threaded through hole, the second threaded through hole, and the blind hole in sequence. The second threaded shaft (17) is rotatably connected to the first threaded through hole, the second threaded through hole, and the blind hole.

6. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 5, characterized in that: The coating assembly includes a coating roller (18), a motor (19), a motor bracket (20), and a pressure roller (21). The coating roller (18) is disposed in the material tank (3). The coating roller (18) is rotatably connected to the first bearing. The coating roller (18) passes through the first bearing and is fixedly connected to the motor (19). The motor (19) is disposed on the motor bracket (20). The motor bracket (20) is disposed on the outside of the vertical plate (2). The two ends of the pressure roller (21) are rotatably connected to the moving block (16) through the second bearing. The pressure roller (21) is disposed above the coating roller (18).

7. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 6, characterized in that: The tensioning assembly includes a U-shaped frame (22), a tensioning roller (23), and an electric push rod (24). The vertical plate (2) has symmetrically opened limit grooves (25). The U-shaped frame (22) is slidably arranged in each of the limit grooves (25). The two ends of the tensioning roller (23) are rotatably connected to the U-shaped frame (22) through a third bearing. The electric push rod (24) is provided at the bottom of the U-shaped frame (22).

8. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 7, characterized in that: There are multiple electric push rods (24).

9. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 8, characterized in that: The upright plate (2) is provided with symmetrical ventilation holes (26).

10. A composite diaphragm coating machine for an alkaline electrolytic cell according to claim 9, characterized in that: The base (1) is fixedly provided with multiple support feet (27) at its bottom.

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