Film material drying device and film coating system thereof

Abstract

The utility model relates to electroplating equipment technical field discloses a kind of film material drying device, comprising: first drying cabinet, is equipped with feed inlet;Second drying cabinet, is equipped with discharge port, first drying cabinet and second drying cabinet are sequentially connected, and commonly constitute the drying channel for film material to pass through;High-speed air knife group, located in first drying cabinet, high-speed air knife group includes high-speed air blowing air knife and high-speed air exhaust air knife, high-speed air blowing air knife and high-speed air exhaust air knife are located at the both sides of drying channel;Low-speed air knife group, located in second drying cabinet, low-speed air knife group includes low-speed air blowing air knife and low-speed air exhaust air knife, low-speed air blowing air knife and low-speed air exhaust air knife are located at the both sides of drying channel, the utility model can reduce energy consumption and improve the utilization efficiency of airflow.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment technology, specifically to a film drying device and its coating system. Background Technology

[0002] In current membrane drying processes, ambient air is typically injected into the drying chamber via an air-blowing knife device to enhance airflow disturbance and moisture replacement within the chamber, thereby achieving the evaporation and removal of moisture from the membrane surface.

[0003] Existing membrane drying systems rely on high-power fans to drive for extended periods. To achieve the required drying intensity and uniformity, the air knives in the fan system often need to maintain high airflow and air pressure, resulting in pressure loss in the air knives and consequently, low airflow utilization of the entire system. Utility Model Content

[0004] This invention provides a film drying device and its coating system to solve the problem of low airflow utilization.

[0005] In a first aspect, this utility model provides a membrane drying device, comprising: The first drying chamber is equipped with a feed inlet; The second drying box has a discharge port. The first drying box and the second drying box are connected in sequence and together form a drying channel for the film material to pass through. A high-speed air knife assembly is located inside the first drying chamber. The high-speed air knife assembly includes a high-speed blowing air knife and a high-speed exhaust air knife, which are located on both sides of the drying channel. A low-speed air knife assembly is located inside the second drying chamber. The low-speed air knife assembly includes a low-speed blowing air knife and a low-speed exhaust air knife, which are located on both sides of the drying channel.

[0006] Beneficial effects: By setting up specific partitioned structures for the first drying chamber and the high-speed air knife group, and the second drying chamber and the low-speed air knife group, a differentiated partitioned structure is established for the membrane material, first using high-speed airflow to strip the liquid, and then using low-speed airflow for gentle drying. This structural division of labor allows both high-speed and low-speed air knives to operate within their respective optimal efficiency ranges, avoiding the drawback of a single air knife group having to continuously maintain high air pressure to accommodate different drying stages. This results in reduced energy consumption and improved airflow utilization efficiency from the overall device structure perspective.

[0007] In one optional embodiment, the length directions of the high-speed blowing air knife and the high-speed exhaust air knife are perpendicular to the length direction of the drying channel. The high-speed blowing air knife has a high-speed air outlet, and the high-speed exhaust air knife has a high-speed exhaust air outlet. The high-speed air outlet and the high-speed exhaust air outlet are arranged opposite to each other and located on both sides of the drying channel.

[0008] Beneficial effects: By limiting the vertical arrangement of the high-speed air knife assembly relative to the drying channel and the opposing orientation of the air outlets, a stable and efficient vertical penetration drying mode is constructed. This arrangement ensures uniform airflow coverage of the membrane material across its width, fundamentally avoiding uneven drying in certain areas. Simultaneously, the synergistic effect of blowing and extracting air instantly peels off and efficiently removes moisture adhering to the membrane material, preventing secondary adhesion and improving drying efficiency and energy utilization.

[0009] In one optional embodiment, the length directions of the low-speed blowing air knife and the low-speed exhaust air knife are perpendicular to the length direction of the drying channel. The low-speed blowing air knife has multiple low-speed air outlets, and the low-speed exhaust air knife has multiple low-speed exhaust air outlets. The low-speed air outlets and the low-speed exhaust air outlets are arranged opposite to each other and located on both sides of the drying channel.

[0010] Beneficial effects: The vertical arrangement of the low-speed air knife assembly relative to the drying channel, with its low-speed air outlets and low-speed air exhaust outlets facing each other (relatively positioned), creates a gentle and uniform enveloping drying mode within the second drying chamber. Firstly, this ensures that the low-speed airflow can comprehensively and evenly cover the membrane surface, effectively eliminating drying dead zones and providing a foundation for refined drying. Simultaneously, the precise alignment of the blowing and exhaust airflow smoothly removes residual trace amounts of moisture from the membrane surface and avoids airflow disturbances that could damage the nearly dry membrane surface. Therefore, while ensuring thorough drying, this significantly improves the quality and consistency of the dried membrane.

[0011] In one optional embodiment, a plurality of the low-speed air outlets are arranged along the length direction of the low-speed blowing air knife, and a plurality of the low-speed air extraction outlets are arranged along the length direction of the low-speed extraction air knife. Both the low-speed air outlet and the low-speed air exhaust outlet form an angle with the vertical plane.

[0012] Beneficial effects: First, by arranging multiple low-speed air outlets and low-speed exhaust outlets along the length of the air knife, the low-speed airflow is dispersed into multiple uniform and refined airflow units, completely eliminating the central vortex and end-point attenuation that may be generated by traditional air outlets, ensuring that the drying uniformity reaches the microscopic level. Second, by making the low-speed air outlets and low-speed exhaust outlets form an angle with the vertical plane, the effective area of ​​the airflow blown out by the low-speed air outlets is larger. Third, the air pressure of the low-speed air outlets is lower and the airflow is slower, avoiding the deformation of the membrane material caused by the large air force at the air outlets.

[0013] In one optional embodiment, the film drying device further includes two fans and two heating units; The air outlet of one of the fans, a heating unit, the high-speed blowing air knife and the high-speed suction air knife are connected in sequence to form a first airflow circuit; The air outlet of another fan, another heating unit, the low-speed blowing air knife and the low-speed suction air knife are connected in sequence to form a second airflow circuit, wherein the first airflow circuit and the second airflow circuit are independent of each other.

[0014] Beneficial effects: By setting up independent first and second airflow loops, the membrane drying device achieves system-level energy efficiency and process optimization. This dual-loop structure allows the high-speed drying and low-speed drying functional areas to operate and be controlled completely independently. This enables precise matching of the optimal airflow, air pressure, and temperature parameters for the two distinctly different process requirements of high-speed peeling and fine drying, fundamentally avoiding the performance compromises that a single system must make to accommodate different needs.

[0015] In one optional embodiment, the heating unit includes a heating chamber, an air inlet pipe, and a heating tube. The heating tube is meandering within the heating chamber. The heating chamber is connected to the air inlet pipe, and the air inlet pipe is connected to either the high-speed air knife assembly or the low-speed air knife assembly.

[0016] Beneficial Effects: The heating unit achieves efficient and stable thermal energy management through a heating chamber structure with a built-in meandering heating tube. This design significantly increases the contact area and heat exchange time between the heating tube and the airflow, thereby significantly improving heat conduction efficiency and enabling rapid heating of the airflow. Simultaneously, the meandering structure helps the airflow to be heated evenly within the heating chamber, avoiding localized overheating and ensuring a uniform temperature of the airflow blown onto the membrane material, providing a crucial guarantee for a high-quality drying process. Furthermore, this integrated structure is compact and reliable, reducing heat loss along the process and further lowering the overall energy consumption of the system at the component level.

[0017] In one optional embodiment, the membrane drying device further includes two filtration units, one of which is disposed between the heating unit and the high-speed air knife group, and the other of which is disposed between the heating unit and the low-speed air knife group.

[0018] Beneficial effects: By installing a filter unit between the heating unit and the air knife assembly, solid particles, flocculent fibers, and other impurities that may be carried by the airflow after heating can be effectively intercepted and removed. This fundamentally prevents contaminants from being blown onto the membrane surface by the airflow, avoiding scratches, blemishes, or pinpoint defects in the product, and providing crucial cleanliness assurance for the membrane drying device. Simultaneously, the clean airflow effectively prevents the accumulation of impurities in the narrow channels inside the air knife, ensuring the uniformity and stability of the airflow from the air knife, reducing the frequency of system maintenance due to blockage, and extending the service life of core components.

[0019] In one optional embodiment, the filtration unit includes a filter chamber and a filter plate, the filter plate being horizontally disposed in the filter chamber, one side of the filter chamber being connected to the heating chamber, and the other side being connected to the air inlet pipe.

[0020] Beneficial effects: The filter unit adopts a specific structure in which the filter plate is horizontally set in the filter chamber, which provides a stable support for the filter plate and ensures that it remains flat when the airflow passes through. This achieves uniform separation of airflow and impurities, avoids local filtration failure caused by filter media deformation, and significantly improves filtration efficiency and ease of maintenance.

[0021] In one optional embodiment, the film drying device further includes a plurality of active rollers, which are disposed in the first drying chamber and the second drying chamber and are spaced apart along the length of the drying channel to drive the film material to travel along the drying channel.

[0022] Beneficial effects: By arranging multiple active rollers at intervals along the drying channel, the membrane material maintains a preset tension and travel speed throughout its journey through the first and second drying chambers, providing a stable and reliable drive source for membrane material transport. The rational layout of the multiple rollers effectively supports the membrane material, preventing it from sagging, shaking, or deviating due to its own weight or airflow impact under high-temperature conditions. This ensures that the distance and angle of action between the membrane surface and the drying airflow remain consistent, fundamentally guaranteeing drying uniformity.

[0023] Secondly, this utility model also provides a coating system, including the aforementioned film drying device.

[0024] Beneficial effects: By integrating the film drying device, which has high efficiency, uniformity and energy saving, the overall production efficiency and product quality consistency of the coating system are directly improved as the core unit, and the defect rate of finished products caused by uneven drying or low drying efficiency of the coating system is significantly reduced. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a film drying device according to an embodiment of the present utility model; Figure 2 for Figure 1 A structural diagram of the blower, heating unit, and filter unit; Figure 3 for Figure 1 A schematic diagram showing the movement trajectory of the medium-sized membrane material along the drying channel, and the positional relationship between the membrane material and the high-speed and low-speed air knife groups. Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle; Figure 5 for Figure 3 Enlarged diagram of part B.

[0027] Explanation of reference numerals in the attached figures: 1. First drying chamber; 2. Feed inlet; 3. Second drying chamber; 4. Discharge outlet; 5. Drying channel; 6. High-speed air knife assembly; 61. High-speed blowing air knife; 62. High-speed exhaust air knife; 63. High-speed air outlet; 64. High-speed exhaust outlet; 7. Low-speed air knife assembly; 71. Low-speed blowing air knife; 72. Low-speed exhaust air knife; 73. Low-speed air outlet; 74. Low-speed exhaust outlet; 8. Fan; 9. Heating unit; 91. Heating chamber; 92. Air inlet pipe; 93. Heating tube; 10. Filtration unit; 101. Filtration chamber; 102. Filter plate; 11. Active roller; 12. Membrane material. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, 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.

[0029] The operation of the membrane drying system in the relevant technology relies on the long-term operation of a high-power fan. In order to achieve the required drying intensity and uniformity, the air knife of the fan system often needs to maintain a high air volume and air pressure, which causes pressure loss of the air knife and thus results in low airflow utilization of the entire system.

[0030] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a film drying device is provided, comprising a first drying box 1 and a second drying box 3 connected in sequence, wherein the first drying box 1 and the second drying box 3 together form a drying channel 5 through which the film material 12 continuously passes. The film material 12 enters from the feed port 2 of the first drying box 1 and runs along the drying channel 5 to the discharge port 4 of the second drying box 3.

[0032] The first drying chamber 1 is equipped with a high-speed air knife group 6, which includes a high-speed blowing air knife 61 and a high-speed exhaust air knife 62. The high-speed blowing air knife 61 and the high-speed exhaust air knife 62 are located on both sides of the drying channel 5. The high-speed air outlet 63 on the high-speed blowing air knife 61 and the high-speed exhaust air outlet 64 on the high-speed exhaust air knife 62 are arranged opposite each other (directly facing each other). The high-pressure air blown out through the high-speed air outlet 63 directly acts on the membrane material, blowing away most of the liquid adhering to the membrane material at high speed. Then, the air mixed with water vapor around the membrane material is quickly sucked away through the high-speed exhaust air outlet 64 to prevent the water vapor in the air from adhering to the membrane material again, thereby improving the drying efficiency.

[0033] Furthermore, the high-speed blowing air knife 61 and the high-speed suction air knife 62 are arranged perpendicular to the length direction of the drying channel 5. This ensures that the high-speed airflow uniformly covers the width direction of the membrane material 12, fundamentally avoiding uneven local drying. The second drying chamber 3 is equipped with a low-speed air knife group 7, which includes a low-speed blowing air knife 71 and a low-speed exhaust air knife 72. The low-speed blowing air knife 71 and the low-speed exhaust air knife 72 are located on both sides of the drying channel 5, respectively. The low-speed blowing air knife 71 and the low-speed exhaust air knife 72 are also arranged perpendicular to the length of the drying channel 5. Multiple low-speed air outlets 73 and multiple low-speed air outlets 74 are respectively opened on them and face each other (relatively arranged), located on both sides of the drying channel 5, forming a gentle, enclosed drying environment. First, it ensures that the low-speed airflow can fully and evenly cover the surface of the membrane material 12, effectively eliminating drying dead corners and providing a foundation for fine drying. At the same time, the precise alignment of the blowing and exhaust can smoothly remove the residual trace moisture on the surface of the membrane material 12 and avoid damage to the nearly dry surface of the membrane material 12 caused by airflow disturbance. Thus, while ensuring thorough drying, the drying quality of the membrane material 12 is significantly improved.

[0034] Furthermore, both the low-speed air outlet 73 and the low-speed air exhaust 74 are arranged along the length of their respective air knives and form a certain angle with the vertical plane, which makes the low-speed airflow discrete into multiple uniform and fine airflow units. This completely eliminates the central vortex and end attenuation that may be generated by traditional air outlets, ensuring that the membrane material can be dried uniformly under the action of the low-speed air knife group 7. Secondly, the angle between the low-speed air outlet 73 and the low-speed air exhaust 74 and the vertical plane makes the area of ​​the airflow blown out by the low-speed air outlet 73 larger. Thirdly, the air pressure of the low-speed air outlet 73 is relatively small and the airflow is relatively slow, avoiding the deformation of the membrane material 12 caused by the large air force at the air outlet.

[0035] In other words, the drying channel is divided into a high-speed section and a low-speed section by the high-speed air knife group 6 and the low-speed air knife group 7. The high-speed section corresponds to a part of the drying channel operated by the high-speed air knife group 6, and the low-speed section corresponds to a part of the drying channel operated by the low-speed air knife group 7. First, most of the liquid adhering to the membrane material is blown away at high speed by the high-speed section, and then the remaining small amount of liquid on the membrane material is dried at low speed by the low-speed section. This allows both the high-speed and low-speed air knives to operate within their respective optimal efficiency ranges, avoiding the drawback of a single air knife group having to continuously maintain high air pressure to accommodate different drying stages. This reduces energy consumption and improves airflow utilization efficiency.

[0036] This embodiment can also form two completely independent airflow loops. The first airflow loop connects the fan 8, heating unit 9, high-speed blowing air knife 61, and high-speed extraction air knife 62, all dedicated to high-speed drying, in sequence. The second airflow loop connects the components dedicated to low-speed drying in the same manner. This dual-loop independent control structure enables the membrane drying device to achieve system-level energy efficiency and process optimization. It also allows the high-speed drying and low-speed drying functional areas to operate and be controlled independently, thus precisely matching the optimal airflow, air pressure, and temperature parameters for the two distinctly different process requirements of high-speed peeling and fine drying. This fundamentally avoids the performance compromises that a single system must make to accommodate different needs.

[0037] Furthermore, the heating unit 9 adopts a heating chamber 91 structure with a built-in meandering heating tube 93. The heating chamber 91 is connected to the air inlet pipe 92, which in turn is connected to the high-speed air knife assembly 6 or the low-speed air knife assembly 7. By increasing the heat exchange area and time, the heat transfer efficiency is significantly improved, enabling rapid heating of the airflow. The meandering structure helps the airflow to be heated evenly within the heating chamber 91, avoiding localized overheating and ensuring that the airflow blowing onto the membrane material 12 has a uniform temperature, providing a key guarantee for a high-quality drying process. This integrated structure is compact and reliable, while reducing heat loss along the process, further reducing the overall energy consumption of the system at the component level.

[0038] Furthermore, this embodiment also includes two filter units 10. One filter unit 10 is disposed between the heating unit 9 and the high-speed air knife group 6, and the other filter unit 10 is disposed between the heating unit 9 and the low-speed air knife group 7. It can effectively intercept and remove solid particles, flocculent fibers and other impurities that may be carried in the airflow, fundamentally preventing pollutants from being blown to the surface of the membrane material 12 with the airflow, thereby avoiding scratches on the surface of the membrane material due to impurities, ensuring the uniformity and stability of the airflow from the air knife, reducing the maintenance frequency required for the system due to blockage, and extending the service life of the core components.

[0039] The filtration unit 10 includes a filter chamber 101 and a filter plate 102. The filter plate 102 is horizontally disposed in the filter chamber 101. One side of the filter chamber 101 is connected to the heating chamber 91, and the other side is connected to the air inlet pipe 92. By adopting this specific structure of a filter plate 102 horizontally disposed in the filter chamber 101, the filtration unit 10 provides a stable support foundation for the filter plate 102, ensuring that it remains flat when airflow passes through. This achieves uniform separation of airflow and impurities, avoids local filtration failure caused by filter media deformation, and significantly improves filtration efficiency and ease of maintenance.

[0040] Furthermore, this embodiment also includes multiple active rollers 11, which are disposed in the first drying chamber 1 and the second drying chamber 3 and spaced apart along the length of the drying channel 5, for driving the film material 12 to travel along the drying channel 5. These active rollers 11 ensure that the film material 12 maintains a preset tension and traveling speed throughout the entire process of sequentially passing through the first drying chamber 1 and the second drying chamber 3, providing a stable and reliable driving source for the transport of the film material 12. The reasonable arrangement of multiple rollers effectively supports the film material 12, preventing it from sagging, shaking, or deviating due to its own weight or airflow impact in a high-temperature environment, thereby ensuring that the distance and angle of action between the surface of the film material 12 and the drying airflow remain consistent, fundamentally guaranteeing the uniformity of drying.

[0041] According to an embodiment of the present invention, another aspect is provided: a coating system. By integrating the film drying device of the previous embodiment, the coating system, with its efficient, uniform, and energy-saving drying characteristics, directly improves the overall production efficiency and product quality consistency of the coating system as a core unit, and significantly reduces the defect rate of finished products caused by uneven drying or low drying efficiency.

[0042] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A membrane drying device, characterized in that, include: The first drying box (1) is equipped with a feed inlet (2); The second drying box (3) has a discharge port (4). The first drying box (1) and the second drying box (3) are connected in sequence and together form a drying channel (5) for the film material (12) to pass through. The high-speed air knife group (6) is located inside the first drying box (1). The high-speed air knife group (6) includes a high-speed blowing air knife (61) and a high-speed suction air knife (62). The high-speed blowing air knife (61) and the high-speed suction air knife (62) are located on both sides of the drying channel (5). The low-speed air knife group (7) is located inside the second drying chamber (3). The low-speed air knife group (7) includes a low-speed blowing air knife (71) and a low-speed exhaust air knife (72). The low-speed blowing air knife (71) and the low-speed exhaust air knife (72) are located on both sides of the drying channel (5).

2. The membrane drying apparatus according to claim 1, characterized in that, The length direction of the high-speed blowing air knife (61) and the high-speed exhaust air knife (62) is perpendicular to the length direction of the drying channel (5). The high-speed blowing air knife (61) is provided with a high-speed air outlet (63), and the high-speed exhaust air knife (62) is provided with a high-speed exhaust air outlet (64). The high-speed air outlet (63) and the high-speed exhaust air outlet (64) are arranged opposite to each other and located on both sides of the drying channel (5).

3. The membrane drying apparatus according to claim 1, characterized in that, The length directions of the low-speed blowing air knife (71) and the low-speed exhaust air knife (72) are perpendicular to the length direction of the drying channel (5). The low-speed blowing air knife (71) is provided with multiple low-speed air outlets (73), and the low-speed exhaust air knife (72) is provided with multiple low-speed exhaust ports (74). The low-speed air outlets (73) and the low-speed exhaust ports (74) are arranged opposite to each other and located on both sides of the drying channel (5).

4. The membrane drying apparatus according to claim 3, characterized in that, Multiple low-speed air outlets (73) are arranged along the length direction of the low-speed blowing air knife (71), and multiple low-speed air extraction outlets (74) are arranged along the length direction of the low-speed extraction air knife (72). Both the low-speed air outlet (73) and the low-speed air exhaust outlet (74) form an angle with the vertical plane.

5. The membrane drying apparatus according to claim 2 or 3, characterized in that, The film drying device also includes two fans (8) and two heating units (9). The air outlet of one of the fans (8), a heating unit (9), the high-speed blowing air knife (61) and the high-speed suction air knife (62) are connected in sequence to form a first airflow circuit; The air outlet of another fan (8), another heating unit (9), the low-speed blowing air knife (71) and the low-speed suction air knife (72) are connected in sequence to form a second airflow circuit, wherein the first airflow circuit and the second airflow circuit are independent of each other.

6. The membrane drying apparatus according to claim 5, characterized in that, The heating unit (9) includes a heating chamber (91), an air inlet pipe (92) and a heating pipe (93). The heating pipe (93) is meandering in the heating chamber (91). The heating chamber (91) is connected to the air inlet pipe (92). The air inlet pipe (92) is connected to the high-speed air knife group (6) or the low-speed air knife group (7).

7. The membrane drying apparatus according to claim 6, characterized in that, The membrane drying device also includes two filter units (10), one of which is located between the heating unit (9) and the high-speed air knife group (6), and the other of which is located between the heating unit (9) and the low-speed air knife group (7).

8. The membrane drying apparatus according to claim 7, characterized in that, The filter unit (10) includes a filter chamber (101) and a filter plate (102). The filter plate (102) is horizontally arranged in the filter chamber (101). One side of the filter chamber (101) is connected to the heating chamber (91), and the other side is connected to the air inlet pipe (92).

9. The membrane drying apparatus according to claim 1, characterized in that, The film drying device also includes multiple active rollers (11), which are disposed in the first drying box (1) and the second drying box (3) and are spaced apart along the length of the drying channel (5) to drive the film (12) to travel along the drying channel (5).

10. A coating system, characterized in that, The membrane drying apparatus includes any one of claims 1 to 9.

Images