A gas isolation device for a thin film production line

Abstract

This invention belongs to the field of thin film production and processing technology, specifically relating to a gas isolation device for a thin film production line, comprising: a film sealing device, a fixed isolation device, a movable isolation device, and a lifting device; the film sealing device is a channel structure, with one end fixed to the tank and the other end close to the roller; the movable isolation device and the fixed isolation device are used to seal the upper and lower sides of the roller; the lifting device is fixed to the upper part of the tank, and its lower part is connected to the movable isolation device; the lifting device drives the movable isolation device to rise and fall. This invention, through the fixed isolation device and the movable isolation device installed on the upper and lower sides of the roller, as well as the film sealing device installed on the side of the roller, improves the sealing effect of the device, greatly reduces the contact area between the extraction section and the outside environment, effectively reduces the escape of the extractant, and lowers the consumption of the extractant.

Description

Technical Field

[0001] This invention belongs to the field of thin film production and processing technology, and specifically relates to a gas isolation device for a thin film production line. Background Technology

[0002] Extraction is a crucial process in the production of microporous membranes using thermally induced phase separation. In traditional membrane production lines, gas escape during the extraction stage has always been a problem. Extractant consumption not only affects production costs but also poses safety risks due to volatilization and leakage. Given the inherent volatility of extractants, minimizing fugitive leakage is paramount. Since extractant volatilization is related to the leakage area, reducing the leakage area is an effective way to reduce extractant consumption. Existing production lines often employ open structures or use baffles placed on the top and bottom of the membrane to reduce the contact area between the extraction stage and the external environment. However, baffles offer poor sealing, are not adjustable, and easily scratch the membrane, failing to effectively reduce extractant leakage.

[0003] Therefore, how to develop a device that can effectively control gas escape in order to solve the above problems has become an urgent issue. Summary of the Invention

[0004] The present invention aims to provide a gas isolation device for a thin film production line to reduce the contact area between the extraction section and the outside world, reduce the escape and consumption of the extractant, thereby solving the technical problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following specific technical solution: a gas isolation device for a thin film production line, comprising: a film sealing device, a fixed isolation device, and a movable isolation device;

[0006] The tank is the original structure on the film production line. The gas isolation device is installed on the tank. Rollers for conveying film are installed in front of the extraction outlet and inlet of the extraction section of the film production line.

[0007] The membrane sealing device has a channel structure, with one end fixed to the trough and the other end close to the roller.

[0008] The movable partition device and the fixed partition device are installed on the trough and located on the upper and lower sides of the roller. The movable partition device and the fixed partition device are used to seal the upper and lower sides of the roller.

[0009] The membrane sealing device includes: a membrane channel and a channel sealing gasket;

[0010] The membrane passage is fixed on the tank body, and the tank body and the membrane passage are sealed by a channel sealing gasket;

[0011] It also includes a cover plate opening and closing device, which includes: a third cover plate, a hinge, a second cylinder and a cylinder mounting base;

[0012] The membrane passage has a rope threading channel; the third cover plate is fastened to the opening of the rope threading channel; the third cover plate is connected to the opening of the rope threading channel by a hinge to realize the opening and closing of the third cover plate.

[0013] The extension and retraction end of the second cylinder is hinged to the third cover plate, and the other end of the second cylinder is hinged to the cylinder mounting seat on the tank. The extension and retraction of the second cylinder controls the opening and closing of the cover plate opening and closing device, realizing the function of the chain passing through the membrane when threading the membrane.

[0014] The third cover plate has an opening that allows the chain to pass through.

[0015] Furthermore, the membrane sealing device also includes: a side sealing gasket, a membrane port sealing gasket, and an open side plate;

[0016] An open side plate is provided on the side of the film passage near the roller; there are two open side plates respectively provided on the left and right sides of the film passage; a side sealing gasket is provided on the open side plate near the roller;

[0017] Both the upper and lower sides of the membrane passage are provided with membrane port sealing gaskets. The membrane port sealing gaskets are pressed together with the fixed partition device and the movable partition device to form a sealing structure. The gap between the roller and the left and right sides of the membrane passage is sealed by the side sealing gaskets.

[0018] Furthermore, the open side plate has a semi-circular opening with a radius larger than that of the roller, and the side sealing gasket is also a semi-circular structure.

[0019] Furthermore, the fixed partition device includes: a fixed mounting base, a lower spacer plate, a partition plate, a fixed partition screw, a first Z-shaped plate, a lower lifting sealing strip, and a support;

[0020] The fixed mounting base is a U-shaped groove structure with the opening facing upward. The fixed mounting base is fixed to the top of the support, and the support is fixedly installed on the groove body.

[0021] There are multiple partition plates and lower spacer plates, and the partition plates and lower spacer plates are arranged at intervals.

[0022] The fixed partition screw passes through the fixed mounting base and then sequentially passes through the partition plate and the lower spacer plate, fixing the partition plate and the lower spacer plate inside the mounting base;

[0023] The first Z-shaped plate is fixedly connected to the back of the mounting base by bolts. The first Z-shaped plate is connected to the lower lifting sealing strip. The upper surface of the lower lifting sealing strip is pressed and sealed with the lower surface of the through-hole sealing gasket.

[0024] Furthermore, the lower spacer plate has a through hole for installation with the fixed partition screw, and the partition plate has an elongated hole in the vertical direction, through which the vertical position of the partition plate can be adjusted.

[0025] Furthermore, the movable partition device includes: a movable mounting base, an upper spacer plate, a movable plate, a sealing brush, a movable partition screw, a second Z-shaped plate, and an upper lifting sealing strip;

[0026] The movable mounting base is a U-shaped groove structure with the opening facing downwards;

[0027] There are multiple movable plates and upper fixed-distance plates, and the movable plates and upper fixed-distance plates are arranged at intervals.

[0028] The top of the movable mounting base is connected to the lifting device; the front of the movable mounting base has an opening, and after the movable partition screw passes through the opening, it passes through the spaced movable plates and the upper fixed spacer plate to fix the movable plates and the upper fixed spacer plate on the movable mounting base;

[0029] The second Z-shaped plate is fixed to the back of the movable mounting base. The second Z-shaped plate is connected to the upper lifting sealing strip. The lower surface of the upper lifting sealing strip is pressed and sealed with the upper surface of the through-membrane sealing gasket.

[0030] The sealing brush is fixed to the bottom of the moving plate.

[0031] Furthermore, the upper spacer plate has a through hole for installation with the movable partition screw, and the movable plate has a vertical elongated hole. The vertical position of the movable plate can be adjusted through the elongated hole, and the movable plate and the upper spacer plate are fixed on the movable mounting base by tightening the movable partition screw.

[0032] Furthermore, it also includes a lifting device; the lifting device includes: a lifting seat and a first cylinder;

[0033] The lower end of the lifting seat is connected to the movable partition device by bolts, and the upper end of the lifting seat is connected to the telescopic end of the first cylinder, which is fixed on the tank.

[0034] The lifting and lowering of the movable partition device is controlled by lifting the first cylinder.

[0035] Furthermore, the lifting device also includes a cylinder guide seat, a guide rod, a bushing, a shaft end baffle, screws, and a guide seat support;

[0036] The fixed end of the first cylinder is mounted on the cylinder guide seat, which is vertically arranged; the cylinder guide seat is connected to the guide seat support on the groove body;

[0037] The upper surface of the lifting seat is provided with two threaded holes, one for connecting the first cylinder and the other for connecting the guide rod;

[0038] The lifting seat is connected to the lower end of the guide rod, and a bushing is fitted on the guide rod. The shaft end baffle is installed on the upper end of the guide rod by screws, and the shaft end baffle is used to fix the bushing. The guide rod moves up and down inside the cylinder guide seat.

[0039] The present invention can achieve the following technical effects:

[0040] The present invention greatly reduces the contact area between the extraction section and the outside world by using fixed and movable partition devices installed on the upper and lower sides of the roller, as well as a membrane sealing device installed on the side of the roller, effectively reducing the escape of the extractant and reducing the consumption of the extractant.

[0041] The gas isolation device of the present invention has the advantages of reasonable design, convenient operation and significant sealing effect. It reduces the risk of personnel coming into contact with harmful extractants and improves the safety of the production process. Attached Figure Description

[0042] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a cross-sectional schematic diagram of the overall structure of the gas isolation device disclosed in this invention;

[0045] Figure 2 This is a front view of the gas isolation device disclosed in this invention;

[0046] Figure 3 This is a schematic diagram of the external overall structure of the gas isolation device disclosed in this invention;

[0047] Figure 4 This is a partial schematic diagram of the external overall structure of the gas isolation device disclosed in this invention;

[0048] Figure 5 This is a schematic diagram of the structure of the fixed isolation device of the gas isolation device disclosed in this invention;

[0049] Figure 6 This is a schematic diagram of the structure of the movable isolation device of the gas isolation device disclosed in this invention;

[0050] Figure 7This is a schematic diagram of the lifting device of the gas isolation device disclosed in this invention;

[0051] Figure 8 This is a schematic diagram of the cover plate opening and closing device of the gas isolation device disclosed in this invention.

[0052] In the picture:

[0053] 1. Membrane sealing device; 11. Membrane passage; 12. Passage sealing gasket; 13. Side sealing gasket; 14. Membrane port sealing gasket; 15. Opening side plate;

[0054] 2. Fixed partition device; 21. Fixed mounting base; 22. Lower spacer plate; 23. Partition plate; 24. Fixed partition screw; 25. First cover plate; 26. First Z-shaped plate; 27. Lower lifting sealing strip; 28. Support;

[0055] 3. Movable partition device; 31. Movable mounting base; 32. Upper spacer plate; 33. Movable plate; 34. Sealing brush; 35. Movable partition screw; 36. Second cover plate; 37. Second Z-shaped plate; 38. Upper lifting sealing strip;

[0056] 4. Lifting device; 41. Lifting seat; 42. Cylinder guide seat; 43. First cylinder; 44. Guide rod; 45. Bushing; 46. Shaft end baffle; 47. Screw; 48. Guide seat support;

[0057] 5. Cover plate opening and closing device; 51. Third cover plate; 52. Hinge; 53. Second cylinder; 54. Cylinder mounting base;

[0058] 6. Tank; 7. Roller. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0060] refer to Figure 1-8 A gas isolation device for a thin film production line includes: a film sealing device 1, a fixed isolation device 2, and a movable isolation device 3;

[0061] The tank 6 is the original structure on the film production line. The gas isolation device is installed on the tank 6. Rollers 7 for conveying the film are installed in front of the extraction outlet and inlet of the extraction section of the film production line. The film enters or leaves the extraction section through the membrane sealing device 1 under the drive of the rollers 7.

[0062] The membrane sealing device 1 is located between the tank 6 and the roller 7; one end of the membrane sealing device 1 is fixed on the tank, and the other end is close to the roller 7 to seal both ends of the roller 7 in the length direction; the membrane sealing device 1 is a channel structure, and the film enters or leaves the extraction section of the film production line through the membrane sealing device 1 under the drive of the roller 7.

[0063] The movable partition device 3 and the fixed partition device 2 are installed on the tank body 6 and located on the upper and lower sides of the roller 7. A small gap is formed between the two and the roller 7, allowing the roller 7 to rotate and drive the film through.

[0064] The lower part of the fixed partition device is fixed to the trough 6, and the upper part of the fixed partition device is close to the lower part of the roller 7; it is used to seal the lower part of the roller 7.

[0065] The movable partition device 3 is fixed on the tank body 6; it is used to seal the roller 7 and the film on top of it; it should be noted that the film is conveyed through the roller 7 during the production process, and the film is located between the roller 7 and the movable partition device 3.

[0066] The roller 7 is sealed by the cooperation of the membrane sealing device 1, the fixed partition device 2 and the movable partition device 3, which greatly reduces the contact area between the extraction section and the outside world, improves the negative pressure efficiency of the extraction section, and reduces the escape and consumption of the extractant.

[0067] Further reference Figure 1-3 The membrane sealing device 1 includes: a membrane channel 11, a channel sealing gasket 12, a side sealing gasket 13, a membrane port sealing gasket 14, and an opening side plate 15;

[0068] The membrane passage 11 is connected to the tank 6 by bolts, and the tank 6 and the membrane passage 11 are sealed by a channel sealing gasket 12;

[0069] An open side plate 15 is provided on the side of the film passage 11 near the roller 7; there are two open side plates 15 respectively provided on the left and right sides of the film passage 11; a side sealing gasket 13 is provided on the open side plate 15 near the roller 7.

[0070] The membrane passage 11 is provided with membrane port sealing gaskets 14 at both the top and bottom. The membrane port sealing gaskets 14 are connected to the fixed partition device 2 and the movable partition device 3 respectively to form a sealing structure. The gap between the roller 7 and the left and right sides of the membrane passage 11 is sealed by the side sealing gaskets 13.

[0071] Further reference Figure 3-4 The side plate 15 has a semi-circular opening with a radius larger than that of the roller 7, and the side sealing gasket 13 has a semi-circular structure with a radius slightly larger than that of the roller 7.

[0072] By adjusting the installation position of the side sealing gasket 13 on the opening side plate 15, the gap between the roller 7 and the side sealing gasket 13 is ensured, thereby achieving the purpose of sealing the membrane passage 11 and the roller 7.

[0073] Further reference Figure 5 The fixed partition device 2 includes: a fixed mounting base 21, a lower spacer plate 22, a partition plate 23, a fixed partition screw 24, a first cover plate 25, a first Z-shaped plate 26, a lower lifting sealing strip 27, and a support 28;

[0074] The fixed mounting base 21 is a U-shaped groove structure with the opening facing upward. The fixed mounting base 21 can also be made by welding square and rectangular tubes with angle steel, which makes the fixed mounting base 21 with higher strength. The fixed mounting base 21 is fixed to the top of the support 28, and the support 28 is fixedly installed on the groove body 6.

[0075] The fixed mounting base 21 has an adjustment window on the front for adjusting the partition plate 23. The first cover plate 25 is fastened to the adjustment window to seal the adjustment window.

[0076] There are several partition plates 23 and lower spacer plates 22. In this embodiment, there are six partition plates 23 and seven lower spacer plates 22. The partition plates 23 and lower spacer plates 22 are arranged at intervals. The partition plates 23 are made of a soft material that is resistant to the corrosion of the extractant, such as polytetrafluoroethylene.

[0077] The fixed mounting base 21 has a through hole on the front and a back plate welded to the inner side of the back. The back plate has a threaded hole concentric with the through hole. After the fixed partition screw 24 passes through the through hole, it passes through the partition plates 23 and the lower spacer plate 22 arranged at intervals in sequence and is then screwed into the threaded hole.

[0078] A nut is welded to the inner side of the back of the fixed mounting base 21. The first Z-shaped plate 26 is fixedly connected to the back of the mounting base 21 by bolts. The first Z-shaped plate 26 is connected to the lower lifting sealing strip 27 by countersunk bolts and nuts. It should be noted that the lower lifting sealing strip 27 has a double-layer structure. The countersunk bolt passes through the inner layer structure and is connected to the first Z-shaped plate 26. The outer layer structure covers the countersunk bolt and the inner layer structure. The advantage of this is that the countersunk bolt can be hidden and sealed inside the lower lifting sealing strip 27 to prevent the countersunk bolt from being exposed. Because if the countersunk bolt is exposed, it will affect the sealing effect when sealing with the membrane sealing gasket 14.

[0079] The upper surface of the outer layer of the lower lifting sealing strip 27 is pressed and sealed with the lower surface of the through-membrane sealing gasket 14.

[0080] Furthermore, the lower spacer plate 22 has a through hole for installation with the fixed partition screw 24, and the partition plate 23 has a vertical elongated hole. The vertical position of the partition plate 23 can be adjusted through the elongated hole. Tightening the fixed partition screw 24 secures the partition plate 23 and the lower spacer plate 22 inside the fixed mounting base 21. Adjusting the vertical position of the partition plate 23 through the elongated hole ensures that there is only a small gap between the top of the partition plate 23 and the roller 7. The multi-layer partition plates 23 form a labyrinth seal, achieving a sealing effect between the fixed partition device 2 and the roller 7.

[0081] Further reference Figure 6 The movable partition device 3 includes: a movable mounting base 31, an upper spacer plate 32, a movable plate 33, a sealing brush 34, a movable partition screw 35, a second cover plate 36, a second Z-shaped plate 37, and an upper lifting sealing strip 38.

[0082] The movable mounting base 31 is a U-shaped groove structure with the opening facing downward. The front of the movable mounting base 31 has an adjustment window for adjusting the movable plate 33. The adjustment window is sealed by fastening it to the second cover plate 36.

[0083] There are multiple movable plates 33 and upper fixed-distance plates 32. In this embodiment, there are six movable plates 33 and seven upper fixed-distance plates 32; the movable plates 33 and upper fixed-distance plates 32 are arranged at intervals.

[0084] The movable mounting base 31 has a through hole on the front and a back plate welded to the inner side of the back. The back plate has a threaded hole concentric with the through hole. After the movable partition screw 35 passes through the through hole, it passes through the spaced movable plate 33 and the upper spacer plate 32 and is screwed into the threaded hole, thereby fixing the movable plate 33 and the upper spacer plate 32 on the movable mounting base 31.

[0085] Nuts are welded to the inner side of the back of the movable mounting base 31. The second Z-shaped plate 37 is fixed to the back of the movable mounting base 31 with bolts. The second Z-shaped plate 37 is connected to the upper lifting sealing strip 38 by bolts. The lower surface of the upper lifting sealing strip 38 is pressed and sealed with the upper surface of the membrane port sealing gasket 14.

[0086] The top of the movable mounting base 31 is connected to the lifting device 4, and the whole structure is raised when the rope is threaded.

[0087] The sealing brush 34 has a brush-like structure and is fixed to the bottom of the moving plate 33. In this embodiment, there are six sealing brushes 34, which are fixed to the bottom of six moving plates 33 respectively. There is a small gap between the lower end of the sealing brush 34 and the roller 7. The sealing brush 34 will not damage the film surface during film production and can also remove static electricity. The multi-layer sealing brush 34 can also compensate for the movement error of the moving partition device 3. The six layers of sealing brushes 34 form a labyrinth seal to achieve the sealing effect between the moving partition device 3 and the roller 7.

[0088] refer to Figure 7Furthermore, the upper spacer plate 32 has a through hole for installation in conjunction with the movable partition screw 35, and the movable plate 33 has a vertical elongated hole. The vertical position of the movable plate 33 can be adjusted through the elongated hole. The movable plate 33 and the upper spacer plate 32 are fixed inside the movable mounting base 31 by tightening the movable partition screw 35.

[0089] Furthermore, the lifting device 4 is fixed to the upper part of the tank 6, and its lower part is connected to the movable partition device 3; the lifting device 4 drives the movable partition device 3 to move up and down; the lifting device 4 includes: a lifting seat 41 and a first cylinder 43.

[0090] The lower end of the lifting seat 41 is connected to the movable partition device 3 by bolts, and the upper end of the lifting seat 41 is connected to the telescopic end of the first cylinder 43. The first cylinder 43 is fixed on the trough 6.

[0091] The lifting and lowering of the movable partition device 3 is controlled by the lifting and lowering of the first cylinder 43; the function of passing through the membrane when threading the rope is achieved by retracting the first cylinder 43.

[0092] Furthermore, the lifting device 4 also includes a cylinder guide seat 42, a guide rod 44, a bushing 45, a shaft end baffle 46, a screw 47, and a guide seat support 48;

[0093] The fixed end of the first cylinder 43 is mounted on the cylinder guide seat 42, and the cylinder guide seat 42 is connected to the guide seat support 48 on the groove 6 by bolts; the cylinder guide seat 42 is set vertically.

[0094] The upper surface of the lifting seat 41 is provided with two threaded holes, one for connecting the first cylinder 43 and the other for connecting the guide rod 44;

[0095] The lifting seat 41 is connected to the lower end of the guide rod 44. A bushing 45 is fitted onto the guide rod 44. A shaft end baffle 46 is installed on the upper end of the guide rod 44 by screws 47. The shaft end baffle 46 is used to fix the bushing 45. The guide rod 44 with the bushing 45 moves up and down inside the cylinder guide seat 42, causing the first cylinder 43 to drive the movable partition device 3 to move in the vertical direction, thus guiding the lifting and lowering of the movable partition device 3. It should be noted that the bushing 45 is made of wear-resistant non-metallic material, such as polytetrafluoroethylene, to avoid friction between the bushing 45 and the cylinder guide seat 42 to generate metal foreign objects.

[0096] refer to Figure 8 Furthermore, it also includes a cover plate opening and closing device 5, which includes: a third cover plate 51, a hinge 52, a second cylinder 53, and a cylinder mounting base 54.

[0097] A rope-threading channel is provided on the membrane passage 11; the third cover plate 51 is fastened to the opening of the rope-threading channel; the third cover plate 51 is connected to the opening of the rope-threading channel through a hinge 52 to realize the opening and closing of the third cover plate 51.

[0098] The extension end of the second cylinder 53 is hinged to the third cover plate 51, and the other end of the second cylinder 53 is hinged to the cylinder mounting seat 54 on the trough 6; the extension and retraction of the second cylinder 53 controls the opening and closing of the cover plate opening and closing device 5, so as to realize the function of the chain passing through the membrane when inserting the membrane.

[0099] The third cover plate 51 has an opening that allows only the chain to pass through, reducing the contact area between the extraction section and the outside world.

[0100] The present invention can adjust the gap between the movable partition device 3 and the roller 7 through the lifting device, and can also achieve the purpose of threading rope, so as to adapt to different production needs.

[0101] Working principle:

[0102] The film production line uses rollers 7 to transport the film. The fixed partition device 2 and the movable partition device 3 of this device are arranged on the upper and lower sides of the first and last rollers 7 in the extraction section. The partition plates 23 and the sealing brushes 34 in the fixed partition device 2 and the movable partition device 3 form a labyrinth seal along the rollers 7. The gap between the partition plates 23 of the fixed partition device 2 and the rollers 7 only allows the rollers 7 to rotate, and the gap between the sealing brushes 34 in the movable partition device 3 and the rollers 7 only allows the film to pass through. Since there is a wrap angle between the film and the rollers 7, the film will not flutter, and the sealing brushes 34 are made of flexible material, so there is no possibility of scraping or breaking the film. The opening side plate 15 and the side sealing gasket 13 of the film sealing device 1 seal the gaps between the rollers 7 and the film passage 11 on the left and right sides axially. Therefore, the left and right sides of the rollers 7 are sealed, and the upper and lower sides are sealed by the movable partition device 3 and the fixed partition device 2, which can reduce the escape of the extractant. At this time, in conjunction with the negative pressure system in the extraction section, the escape of the extractant can be reduced even more effectively.

[0103] The working process of this invention:

[0104] First, by adjusting the positions of the partition plate 23 and the sealing brush 34 in the fixed partition device 2 and the movable partition device 3, a suitable small gap is formed between them and the roller 7.

[0105] Then, operate the lifting device 4 to raise the movable partition device 3, open the third cover plate 51 through the cover plate opening and closing device 5, prepare for the rope threading work, start the rope threading chain, and let the film pass through the film passage 11 to complete the rope threading operation.

[0106] After the rope is threaded, the movable partition device 3 is lowered to the preset position, the third cover plate 51 is closed, and film production begins. During the production process, the film passage 11, the fixed partition device 2 and the movable partition device 3 work together to seal the periphery of the roller 7, which can effectively reduce the escape of the extractant.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0108] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0109] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gas isolation device for a thin film production line, characterized in that, include: A membrane sealing device (1), a fixed partition device (2), and a movable partition device (3); The tank (6) is the original structure on the film production line. The gas isolation device is installed on the tank (6). Rollers (7) for conveying film are installed in front of the extraction outlet and inlet of the extraction section of the film production line. The membrane sealing device (1) is a channel structure, with one end fixed on the trough (6) and the other end close to the roller (7). The movable partition device (3) and the fixed partition device (2) are installed on the trough (6) and located on the upper and lower sides of the roller (7). The movable partition device (3) and the fixed partition device (2) are used to seal the upper and lower sides of the roller (7). The membrane sealing device (1) includes: a membrane channel (11) and a channel sealing gasket (12). The membrane passage (11) is fixed on the tank (6), and the tank (6) and the membrane passage (11) are sealed by a channel sealing gasket (12); It also includes a cover plate opening and closing device (5), which includes: a third cover plate (51), a hinge (52), a second cylinder (53) and a cylinder mounting base (54); The membrane channel (11) has a rope-threading channel; the third cover plate (51) is fastened to the opening of the rope-threading channel; the third cover plate (51) is connected to the opening of the rope-threading channel through a hinge (52) to realize the opening and closing of the third cover plate (51); The telescopic end of the second cylinder (53) is hinged to the third cover plate (51), and the other end of the second cylinder (53) is hinged to the cylinder mounting seat (54) on the groove (6); the telescopic movement of the second cylinder (53) controls the opening and closing of the cover plate opening and closing device (5) to realize the function of the chain passing through the membrane when the membrane is pierced. The third cover plate (51) has an opening that allows the chain to pass through.

2. The gas isolation device for a thin film production line according to claim 1, characterized in that, The membrane sealing device (1) further includes: a side sealing gasket (13), a membrane port sealing gasket (14), and an opening side plate (15). An open side plate (15) is provided on the side of the film passage (11) near the roller (7); there are two open side plates (15) respectively located on the left and right sides of the film passage (11); a side sealing gasket (13) is provided on the open side plate (15) near the roller (7). The membrane passage (11) is provided with membrane port sealing gaskets (14) on both the upper and lower sides. The membrane port sealing gaskets (14) are pressed together with the fixed partition device (2) and the movable partition device (3) to form a sealing structure. The gap between the roller (7) and the membrane passage (11) on the left and right sides is sealed by the side sealing gaskets (13).

3. The gas isolation device for a thin film production line according to claim 2, characterized in that, The open side plate (15) has a semi-circular opening with a radius larger than that of the roller (7), and the side sealing gasket (13) is also a semi-circular structure.

4. The gas isolation device for a thin film production line according to claim 1, characterized in that, The fixed partition device (2) includes: a fixed mounting base (21), a lower spacer plate (22), a partition plate (23), a fixed partition screw (24), a first Z-shaped plate (26), a lower lifting sealing strip (27), and a support (28); The fixed mounting base (21) is a U-shaped groove structure with the opening facing upward. The fixed mounting base (21) is fixed on the top of the support (28), and the support (28) is fixedly installed on the groove body (6). There are multiple partition plates (23) and lower spacers (22), and the partition plates (23) and lower spacers (22) are arranged at intervals. The fixed partition screw (24) passes through the fixed mounting base (21) and then passes through the partition plate (23) and the lower spacer plate (22) in sequence, and fixes the partition plate (23) and the lower spacer plate (22) in the mounting base (21); The first Z-shaped plate (26) is fixedly connected to the back of the mounting base (21) by bolts. The first Z-shaped plate (26) is connected to the lower lifting sealing strip (27). The upper surface of the lower lifting sealing strip (27) is pressed and sealed with the lower surface of the through-hole sealing gasket (14).

5. The gas isolation device for a thin film production line according to claim 4, characterized in that, The lower spacer plate (22) has a through hole for installation with the fixed partition screw (24), and the partition plate (23) has a vertical elongated hole, through which the vertical position of the partition plate (23) can be adjusted.

6. The gas isolation device for a thin film production line according to claim 1, characterized in that, The movable partition device (3) includes: a movable mounting base (31), an upper spacer plate (32), a movable plate (33), a sealing brush (34), a movable partition screw (35), a second Z-shaped plate (37), and an upper lifting sealing strip (38). The movable mounting base (31) is a U-shaped groove structure with the opening facing downwards; There are multiple movable plates (33) and upper fixed-distance plates (32), and the movable plates (33) and upper fixed-distance plates (32) are arranged at intervals; The top of the movable mounting base (31) is connected to the lifting device (4); the movable mounting base (31) has an open hole on the front, and the movable partition screw (35) passes through the open hole and then through the spaced movable plate (33) and the upper fixed plate (32) to fix the movable plate (33) and the upper fixed plate (32) on the movable mounting base (31). The second Z-shaped plate (37) is fixed on the back of the movable mounting base (31). The second Z-shaped plate (37) is connected to the upper lifting sealing strip (38). The lower surface of the upper lifting sealing strip (38) is pressed and sealed with the upper surface of the through-membrane sealing gasket (14). The sealing brush (34) is fixed to the bottom of the movable plate (33).

7. The gas isolation device for a thin film production line according to claim 6, characterized in that, The upper spacer plate (32) has a through hole for installation with the movable partition screw (35), and the movable plate (33) has a vertical elongated hole. The vertical position of the movable plate (33) can be adjusted through the elongated hole. The movable plate (33) and the upper spacer plate (32) are fixed on the movable mounting base (31) by tightening the movable partition screw (35).

8. The gas isolation device for a thin film production line according to claim 1, characterized in that, It also includes a lifting device (4); the lifting device (4) includes: a lifting seat (41) and a first cylinder (43); The lower end of the lifting seat (41) is connected to the movable partition device (3) by bolts, and the upper end of the lifting seat (41) is connected to the telescopic end of the first cylinder (43). The first cylinder (43) is fixed on the groove (6). The lifting and lowering of the movable partition device (3) is controlled by the lifting and lowering of the first cylinder (43).

9. The gas isolation device for a thin film production line according to claim 8, characterized in that, The lifting device (4) also includes a cylinder guide seat (42), a guide rod (44), a bushing (45), a shaft end baffle (46), a screw (47), and a guide seat support (48). The fixed end of the first cylinder (43) is mounted on the cylinder guide seat (42), which is vertically arranged; the cylinder guide seat (42) is connected to the guide seat support (48) on the groove (6); The upper surface of the lifting seat (41) is provided with two threaded holes, one for connecting the first cylinder (43) and the other for connecting the guide rod (44). The lifting seat (41) is connected to the lower end of the guide rod (44), and a bushing (45) is fitted on the guide rod (44). The shaft end baffle (46) is installed on the upper end of the guide rod (44) by screws (47). The shaft end baffle (46) is used to fix the bushing (45). The guide rod (44) moves up and down inside the cylinder guide seat (42).

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