A composite membrane-based vertical drying system and drying method

Abstract

The application discloses a vertical drying system and drying method based on a composite film, relates to the technical field of composite film preparation, and comprises a preheating box, a plurality of cloth guide rollers which are staggered and arranged in an S shape in a vertical direction, a drying box which is located in the preheating box, a plurality of drying assemblies which are located in the drying box, and a prism which is located between the composite films on the upper and lower sides of the cloth guide rollers. The prism shaft is provided with a piston hole, the small-diameter end of the prism is provided with a small-diameter through hole, the inner side of the prism is further provided with a suction hole, and the piston hole, the small-diameter through hole, the prism side wall and the composite film, the space on the large-diameter end of the prism, and the suction hole sequentially form a circulating flow channel. After the composite film is glued and printed, the vertical cloth guide rollers and the hot air circulating flow channel provided by the drying assembly greatly improve the drying efficiency, reduce the transmission path and the size of the drying equipment, and the application has a small floor area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite film preparation, in particular to a vertical drying system and drying method based on composite film. BACKGROUND

[0002] The composite film is a film-shaped material composed of multiple layers according to the required properties. The automatic composite film processing machine, as the processing equipment of the composite film, is an equipment for automatically processing the composite film with multiple layers. The produced composite film is widely used for food, beverage, cigarette, medicine, photographic film, household products, etc., as the outer packaging of various materials.

[0003] In the production and preparation process of the composite film, the processes of gluing and printing are usually performed. After the gluing and printing are completed, the composite film needs to be dried at high temperature through a drying process so that it can be wound into a shape. In the existing drying process, a long strip-shaped drying equipment is usually used to convey the composite film in an S-shaped manner along the horizontal direction in the drying equipment, and the drying is performed by a hot air machine in a high-temperature environment. Since the drying path of the drying equipment is long and the internal space is large, the drying efficiency of the drying equipment is low, and the occupied area is large, which is not conducive to the efficient preparation of the composite film. SUMMARY

[0004] The present application is to solve the problems of the prior art. The purpose is to provide a vertical drying system and drying method based on composite film. The present application greatly improves the drying efficiency, reduces the transmission path and the size of the drying equipment, and has a small occupied area.

[0005] The present application is achieved by the following technical solutions:

[0006] A vertical drying system based on composite film, comprising:

[0007] A preheating box with a plurality of horizontally arranged cloth guide rollers. The cloth guide rollers are staggered in an S-shaped manner in the vertical direction.

[0008] A drying box located inside the preheating box. The two ends of the cloth guide rollers pass through the side wall of the drying box, and a gap is left between the drying box and the cloth guide rollers. The upper end and the lower end of the drying box are respectively provided with an inlet and an outlet for the composite film.

[0009] A plurality of drying assemblies located in the drying box. The drying assemblies are located between the composite films on the upper and lower sides of the cloth guide rollers.

[0010] The drying assembly comprises a prism, the small-diameter end of the prism is towards the cloth guide roller; the prism shaft is provided with a piston hole, the large-diameter end of the prism is provided with a chamber, the chamber is provided with a telescopic motor, the piston rod of the telescopic motor is located in the piston hole and is matched with the piston hole; the small-diameter end of the prism is provided with a small-diameter through hole, the small-diameter through hole is communicated with the piston hole and has a smaller diameter than the piston hole; the inside of the prism is further provided with a suction hole, one end of the suction hole is communicated with the piston hole and the other end is communicated with the space around the large-diameter end of the prism.

[0011] The small-diameter through hole is a square hole, a rotating plate is hinged on one side of the inner wall of the small-diameter through hole and a baffle is fixed on the other side, one end of the rotating plate is hinged on the inner wall of the small-diameter through hole through a torsional spring, the rotating plate is rotated to abut against the baffle on the other end to close the small-diameter through hole; an elastic member is connected between the rotating plate and the piston rod;

[0012] The piston hole, the small-diameter through hole, the side wall of the prism, the space around the large-diameter end of the prism, the suction hole and the chamber form a circulating flow channel in sequence.

[0013] With respect to the prior art, generally a long strip-shaped drying device is adopted, the composite film is conveyed in a horizontal S shape in the drying device, and drying is performed by a hot air blower in a high temperature environment. Since the drying path of the drying device is long and the internal space is large, the drying efficiency of the drying device is low, the occupied area is large, and this is not conducive to the efficient preparation of the composite film. The present application provides a vertical drying system based on a composite film. After the composite film is glued and printed, the vertical arrangement of the cloth guide roller and the hot air circulation flow channel provided by the drying assembly greatly improves the drying efficiency, reduces the transmission path and the size of the drying device, and the occupied area is small.In specific solutions, the preheating box and the drying box are sequentially arranged from outside to inside, the preheating box is provided with a plurality of cloth guide rollers, and the cloth guide rollers are distributed in an S shape along the vertical direction, at this time, the composite film can be sequentially wound on the cloth guide rollers from top to bottom for conveying; the preheating box is provided with a plurality of second electric heating fans on the side, through the second electric heating fans, the internal temperature can be preheated, and the internal average temperature can quickly reach the threshold value; the drying box is fixed in the preheating box, the middle part of the cloth guide roller is located in the drying box, and the two ends pass through the drying box, at this time, a gap is left between the cloth guide roller and the drying box, the drying box does not affect the rotation of the cloth guide roller, the composite film can enter from the upper opening of the drying box, be wound on the cloth guide roller in the drying box, and be sent out from the bottom outlet of the drying box; after the composite film is installed, the upper and lower positions of a single cloth guide roller on the same side are respectively inclined composite film parts, a drying assembly is arranged between the two inclined composite film parts, the drying assembly comprises a prism, the prism is preferably a four-prism, the small-diameter end of the prism faces the cloth guide roller, the prism is provided with a piston hole on the internal axis, and the large-diameter end of the prism is provided with a telescopic motor, so that a piston rod is arranged on the output end of the telescopic motor, and the piston rod can move in the piston hole; the small-diameter through hole in communication with the piston hole is further arranged on the small-diameter end, the small-diameter through hole is provided with a hinged rotating plate, the rotating plate and the end of the piston rod are connected through an elastic element, so that when the piston rod retreats, the rotating plate can be pulled to rotate through the elastic element, when the end of the rotating plate abuts against the baffle, at this time, the small-diameter through hole is closed, then the piston rod continues to retreat, at this time, gas can be sucked into the piston hole from the suction hole; when the piston rod advances, the elastic element gradually relaxes, the rotating plate is reset under the action of the torsional spring, at this time, the small-diameter through hole is opened, and in the advancing process of the piston rod, the end of the suction hole is gradually closed through the side wall of the piston rod, in the continuous advancing process, the internal gas can be pushed out from the small-diameter through hole; and with the increase of the pushed-in gas, the gas enters the gap between the side wall of the prism and the composite film and moves along the length direction of the composite film, when reaching the large-diameter end of the prism, the gas enters the piston hole again under the suction force of the suction hole, and a circulating flow channel is sequentially formed; through the above solutions, the flow path and range of high-temperature gas are limited, so that the composite film can be quickly and efficiently dried, in this way, the number of cloth guide rollers and the length of the transmission path can be reduced, the floor area can be reduced, and the drying efficiency can be improved; wherein the elastic element can be a high-strength elastic rope or a spring; in addition, the small gap between the cloth guide roller and the drying box does not need to be closed to communicate with the high-temperature gas in the preheating box.

[0014] Further, in order to improve the gas flow rate and efficient heat exchange, the chamber comprises an intermediate chamber, an upper chamber and a lower chamber, the telescopic motor is located in the intermediate chamber, the upper chamber and the lower chamber are provided with a first electric heating fan, the upper side of the upper chamber and the lower side of the lower chamber are provided with a diameter expansion port, the small diameter end of the diameter expansion port is communicated with the air inlet of the first electric heating fan, the large diameter end of the diameter expansion port is communicated with the peripheral space of the large diameter end of the prism, and the air outlet of the first electric heating fan is communicated with the suction hole. In this scheme, the first heating fan, the telescopic motor and the first heating fan are sequentially arranged from top to bottom in the chamber, the air inlet of the first heating fan is communicated with the diameter expansion port, and the air outlet is communicated with the suction hole. Thus, under the action of the first heating fan, suction can be formed at the rear end of the circulating flow channel, so as to improve the flow rate of the gas and make a large amount of gas flow along the composite membrane to improve the drying efficiency. In addition, since the gas flowing through the composite membrane will be cooled after heat exchange, the first heating fan can heat the cooled gas again to ensure the drying temperature of the gas and improve the drying efficiency.

[0015] Further, in order to provide a large amount of high-temperature gas, the both sides of the drying box are penetrated by a hole communicated with the other end of the suction hole, and the hole is communicated with the external space of the drying box. In this scheme, the hole communicated with the suction hole is provided to facilitate the communication with the external gas, and the temperature is ensured by mixing the gas. Secondly, if the first heating fan is not started, the external gas can be introduced and discharged through the hole when the piston rod works, so as to avoid insufficient gas supply.

[0016] Further, in order to provide a large amount of gas for the first heating fan and avoid insufficient gas supply, the diameter expansion port is provided with a branch pipe, one end of the branch pipe is communicated with the diameter expansion port, the other end of the branch pipe penetrates the side wall of the preheating box and is communicated with the outside, and the other end of the branch pipe is provided with a filtering device. The filtering device can adopt a filter screen or a purifier.

[0017] Further, in order to reduce the gas backflow when the piston rod works, the diameter of the suction hole gradually increases from one end to the other end of the suction hole, a plurality of first guide plates are uniformly distributed on the ring-shaped side wall of the suction hole, and the first guide plates are arc-shaped and curved towards the one end of the suction hole.

[0018] Further, in order to guide the gas flow, facilitate the gas flow along the composite film, two second flow guides are arranged on the small-diameter end of the prism, two small-diameter through holes are arranged on the upper and lower parts of the small-diameter end of the prism, one end of each of the two second flow guides is connected to the small-diameter end of the prism between the two small-diameter through holes, the other end of each of the two second flow guides is bent in a direction away from each other, and the bending direction is towards the composite film. In this scheme, when the piston rod pushes out the gas, the gas can enter the side wall of the second flow guide through the small-diameter through hole and flow along the direction of the second flow guide, and then a large amount of gas can move along the surface of the composite film under the suction of the upper part to complete the drying.

[0019] Further, after the composite film is glued, the glue is in a state similar to water, which may be attached to the guide roller when passing through the guide roller, affecting the drying efficiency of the composite film. In order to wipe the un-dried glue attached to the guide roller, the side wall of the second flow guide near the guide roller is provided with a wiping strip, and the wiping strip is provided with an arc-shaped groove matching the size of the side surface of the guide roller. The second flow guide on both sides of the wiping strip is bent away from the guide roller. In this scheme, the wiping strip is arranged along the length direction of the guide roller, and the side wall of the wiping strip towards the guide roller is provided with an arc-shaped groove to match the arc-shaped side surface of the guide roller. During the rotation of the guide roller, the wiping strip can wipe the un-dried glue attached to the guide roller to avoid the glue from being attached to the composite film again, which not only affects the flatness of the composite film, but also reduces the drying efficiency of the composite film. In addition, the second flow guide on both sides of the wiping strip is bent away from the guide roller, which can increase the bending radius of the second flow guide and accurately guide the gas.

[0020] Further, during the drying process, the glue may fall off when the composite film enters the drying box. In order to facilitate the collection of the falling glue, the small-diameter end of the prism is further provided with a storage cavity between the two small-diameter through holes. The small-diameter end of the prism is further provided with an inlet channel communicating with the upper end position of the storage cavity, and the uppermost second flow guide is used to guide the liquid into the storage cavity through the inlet channel. In this scheme, since the entire device is vertically arranged, the glue on the composite film will fall off on the prism side wall or flow into the upper second flow guide. When the glue enters the second flow guide, the glue can be quickly transported into the storage cavity due to the shaking of the wiping strip and the second flow guide caused by the rotation of the guide roller. In addition, a channel can be arranged at the storage cavity to externally communicate, so that the residual glue can be externally transported.

[0021] Further, the second electric heating fan is arranged on the periphery of the preheating box.

[0022] Further, a drying method of a vertical drying system based on a composite film comprises the following steps:

[0023] S1: sequentially introducing the composite film into the preheating box and installing the preheating box, and then starting the second electric heating fan on the side of the preheating box;

[0024] S2: detecting the temperature in the preheating box through the temperature sensor in the preheating box and detecting the temperature in the drying box through the temperature sensor in the drying box, and when the temperatures in the preheating box and the drying box reach the same threshold value, starting the telescopic motor to start telescoping and conveying the composite film;

[0025] S3: during the conveying process, when the temperature in the drying box is lower than the threshold value, starting the first electric heating fan to start running.

[0026] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0027] 1. The vertical drying system and drying method based on a composite film are provided, and after the composite film is glued and printed, the vertical arrangement of the cloth guide roller and the hot air circulation flow channel provided by the drying assembly greatly improves the drying efficiency, reduces the conveying path and the size of the drying equipment, and has a small floor area.

[0028] 2. The vertical drying system and drying method based on a composite film are provided, and by arranging the first hot air motor, under the action of the first hot air motor, suction can be formed at the rear end of the circulation flow channel, so as to improve the flow rate of the gas and make a large amount of gas flow along the composite film to improve the drying efficiency; in addition, since the gas flowing through the composite film will be cooled after heat exchange, the first hot air motor can heat the cooled gas again to ensure the drying temperature of the gas and improve the drying efficiency.

[0029] 3. The vertical drying system and drying method based on a composite film are provided, and by arranging the first guide plate on the ring-shaped side wall of the suction hole, the backflow of the gas can be reduced when the piston rod works; by arranging the second guide plate, when the piston rod pushes out the gas, the gas can enter the side wall of the second guide plate through the small-diameter through hole and flow along the direction of the second guide plate, and then through the suction action from above, a large amount of gas can move along the surface of the composite film to complete the drying.

[0030] 4. The application provides a vertical drying system and drying method based on a composite film, by using the scheme, the wiping strip can wipe the adhesive liquid attached to the guide roller, so as to avoid the adhesive liquid from being attached to the composite film again, which will not only affect the flatness of the composite film, but also reduce the drying efficiency of the composite film; in addition, since the whole device is vertically arranged, the adhesive liquid on the composite film will fall on the prism side wall or flow into the second guide plate above, and after entering the second guide plate, the guide roller will drive the wiping strip and the second guide plate to vibrate, so that the adhesive liquid can be quickly transported into the storage cavity; in addition, a channel can be externally communicated at the storage cavity, so that the residual adhesive liquid can be transported outward. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0032] Figure 1 A preheating box sectional view of an embodiment provided by the application;

[0033] Figure 2 A partial schematic view of a drying box of an embodiment provided by the application;

[0034] Figure 3 A drying box sectional view of an embodiment provided by the application;

[0035] Figure 4 A schematic view of a heating assembly structure of an embodiment provided by the application;

[0036] Figure 5 An enlarged view A in Figure 4 provided by the application.

[0037] Markings in the drawings and corresponding names of parts:

[0038] 1 - preheating box, 2 - guide roller, 3 - drying box, 301 - inlet, 302 - outlet, 4 - drying assembly, 401 - prism, 402 - telescopic motor, 403 - piston rod, 404 - small-diameter through hole, 405 - suction hole, 406 - first electric fan, 407 - enlarged diameter port, 408 - hole, 409 - first guide plate, 410 - second guide plate, 411 - wiping strip, 412 - storage cavity, 413 - inlet channel, 414 - rotating plate, 415 - baffle, 416 - elastic member, 5 - branch pipe, 6 - second electric fan. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments and drawings, the illustrative embodiments and the description thereof are only used to explain the present application, and do not limit the present application.

[0040] Embodiment 1

[0041] The present embodiment 1 provides a vertical drying system based on composite film, as shown in the figure, comprising: Figures 1-5

[0042] A preheating box 1, the preheating box 1 is provided with a plurality of transversely arranged cloth guide rollers 2, the plurality of cloth guide rollers 2 are staggered in S shape in the vertical direction;

[0043] A drying box 3, the drying box 3 is located inside the preheating box 1, both ends of the plurality of cloth guide rollers 2 pass through the side wall of the drying box 3, and a gap is left between the drying box 3; the upper end and the lower end of the drying box 3 are respectively left for the composite film to enter the inlet 301 and the outlet 302;

[0044] A plurality of drying assemblies 4, the plurality of drying assemblies 4 are located in the drying box 3; the drying assembly 4 is located between the composite film on the upper and lower sides of the cloth guide roller 2;

[0045] The drying assembly 4 comprises a prism 401, the small-diameter end of the prism 401 faces the cloth guide roller 2; the prism 401 is provided with a piston hole on the shaft, the large-diameter end of the prism 401 is provided with a cavity, the cavity is provided with a telescopic motor 402, the piston rod 403 of the telescopic motor 402 is located in the piston hole and is matched with the piston hole; the small-diameter end of the prism 401 is provided with a small-diameter through hole 404, the small-diameter through hole 404 is communicated with the piston hole and has a smaller diameter than the piston hole; the inside of the prism 401 is further provided with a suction hole 405, one end of the suction hole 405 is communicated with the piston hole, and the other end is communicated with the space on the large-diameter end of the prism 401;

[0046] The small-diameter through hole 404 is a square hole, one side of the inner wall of the small-diameter through hole 404 is hinged with a rotating plate 414, and the other side is fixed with a baffle 415, one end of the rotating plate 414 is hinged with the inner wall of the small-diameter through hole 404 through a torsional spring, the rotation of the rotating plate 414 is used to abut the other end of the rotating plate 414 on the baffle 415, so as to close the small-diameter through hole 404; the rotating plate 414 and the piston rod 403 are connected with an elastic member 416;

[0047] The piston hole, the small-diameter through hole 404, the prism 401 side wall and the composite film, the space on the large-diameter end of the prism 401, and the suction hole 405 sequentially form a circulating flow channel.​

[0048] With respect to the prior art, generally a long strip-shaped drying equipment is adopted, the composite film is conveyed in a horizontal S shape in the drying equipment, and drying is performed by a hot air blower in a high temperature environment. Since the drying path of the drying equipment is long and the internal space is large, the drying efficiency of the drying equipment is low, the occupied area is large, and this is not conducive to the efficient preparation of the composite film. The present application provides a vertical drying system based on a composite film. After the composite film is glued and printed, the vertical arrangement of the cloth guide roller 2 and the hot air circulation flow channel provided by the drying assembly 4 greatly improves the drying efficiency, reduces the transmission path and the size of the drying equipment, and the occupied area is small.In specific solutions, the preheating box 1 and the drying box 3 are sequentially arranged from outside to inside, the preheating box 1 is provided with a plurality of cloth guide rollers 2, and the cloth guide rollers 2 are distributed in an S shape along the vertical direction, at this time, the composite film can be sequentially wound on the cloth guide rollers 2 from top to bottom for conveying; the preheating box 1 is provided with a plurality of second electric heaters 6 on the side, the internal temperature can be preheated through the second electric heaters 6, and the internal average temperature can quickly reach the threshold value; the drying box 3 is fixed in the preheating box 1, the cloth guide rollers 2 are partially located in the drying box 3 in the middle, and the two ends pass through the drying box 3, at this time, a gap is left between the cloth guide rollers 2 and the drying box 3, the drying box 3 will not affect the rotation of the cloth guide rollers 2, the composite film can enter from the upper opening of the drying box 3, be wound on the cloth guide rollers 2 in the drying box 3, and be sent out from the bottom outlet 302 of the drying box 3; after the composite film is installed, the upper and lower positions of the same side of a single cloth guide roller 2 are respectively inclined composite film parts, the drying assembly 4 is arranged between the two inclined composite film parts, the drying assembly 4 comprises a prism 401, the prism 401 preferably adopts a four-prism 401, the small-diameter end of the prism 401 faces the cloth guide roller 2, the prism 401 is provided with a piston hole on the internal axis, and the large-diameter end is provided with an extension motor 402, so that the piston rod 403 is arranged on the output end of the extension motor 402, and the piston rod 403 can move in the piston hole; the small-diameter through hole 404 in communication with the piston hole is further arranged on the small-diameter end, the small-diameter through hole 404 is provided with a hinged rotating plate 414, the rotating plate 414 and the end of the piston rod 403 are connected through an elastic element 416, so that when the piston rod 403 retreats, the rotating plate 414 can be pulled to rotate through the elastic element 416, when the end of the rotating plate 414 abuts against the baffle 415, the small-diameter through hole 404 is closed at this time, then the piston rod 403 continues to retreat, at this time, gas can be sucked into the piston hole from the suction hole 405; when the piston rod 403 advances, the elastic element 416 gradually relaxes, the rotating plate 414 is reset under the action of the torsional spring, at this time, the small-diameter through hole 404 is opened, and in the advancing process of the piston rod 403, the end of the suction hole 405 will be gradually closed by the side wall of the piston rod 403, in the continuous advancing process, the internal gas can be pushed out from the small-diameter through hole 404; and with the increase of the pushed-in gas, the gas will enter the gap between the side wall of the prism 401 and the composite film, and move along the length direction of the composite film, when reaching the large-diameter end of the prism 401, the gas will enter the piston hole again under the suction force of the suction hole 405, and a circulating flow channel is formed in sequence; through the above solutions, the flow path and range of high-temperature gas are limited, so that the composite film can be quickly and efficiently dried, in this way, the number of cloth guide rollers 2 and the length of the conveying path can be reduced, the floor area can be reduced, and the drying efficiency can be improved; wherein the elastic element 416 can be a high-strength elastic rope or a spring; in addition, the small gap between the cloth guide roller 2 and the drying box 3 does not need to be closed to communicate with the high-temperature gas in the preheating box 1.

[0049] In order to improve the gas flow rate and perform efficient heat exchange, the chamber comprises an intermediate chamber, an upper chamber and a lower chamber in the embodiment, the telescopic motor 402 is located in the intermediate chamber, the upper chamber and the lower chamber are both provided with the first electric heating fan 406, the upper side of the upper chamber and the lower side of the lower chamber are both provided with the diameter expansion port 407, the small-diameter end of the diameter expansion port 407 is in communication with the air inlet of the first electric heating fan 406, the large-diameter end of the diameter expansion port 407 is in communication with the circumferential space of the large-diameter end of the prism 401, and the air outlet of the first electric heating fan 406 is in communication with the suction hole 405. In the scheme, the first heating fan, the telescopic motor 402 and the first heating fan are sequentially arranged from top to bottom in the chamber, the air inlet of the first heating fan is in communication with the diameter expansion port 407, and the air outlet is in communication with the suction hole 405. In this way, under the action of the first heating fan, suction can be formed at the rear end of the circulating flow channel, so as to improve the flow rate of the gas and make a large amount of gas flow along the composite membrane to improve the drying efficiency. In addition, since the gas flowing through the composite membrane will be cooled after heat exchange, the first heating fan can heat the cooled gas again to ensure the drying temperature of the gas and improve the drying efficiency.

[0050] In order to provide a large amount of high-temperature gas, the hole channel 408 in communication with the other end of the suction hole 405 is formed through the two sides of the drying box 3 and is in communication with the space outside the drying box 3. In the scheme, the hole channel 408 in communication with the suction hole 405 is provided to facilitate communication with external gas and ensure the temperature by mixing the gas. Secondly, if the first heating fan is not started, the external gas can be introduced and discharged through the hole channel 408 when the piston rod 403 works, so as to avoid insufficient gas supply.

[0051] In order to provide a large amount of gas for the first heating fan and avoid insufficient gas supply, the diameter expansion port 407 is provided with a branch pipe 5, one end of the branch pipe 5 is in communication with the diameter expansion port 407, the other end of the branch pipe 5 penetrates the side wall of the preheating box 1 and is in communication with the outside, and the other end of the branch pipe 5 is provided with a filtering device. The filtering device can be a filter screen or a purifier.

[0052] In order to reduce gas backflow when the piston rod 403 works, the diameter of the suction hole 405 gradually increases from one end to the other end, a plurality of first guide plates 409 are uniformly distributed on the circumferential side wall of the suction hole 405, and the first guide plates 409 are arc-shaped and curved towards the one end of the suction hole 405.

[0053] In order to guide the gas flow and facilitate the gas flow along the composite film, two second flow guides 410 are arranged on the small-diameter end of the frustum 401, two small-diameter through holes 404 are arranged on the small-diameter end of the frustum 401 in an up-down distribution, one end of each of the two second flow guides 410 is connected to the small-diameter end of the frustum 401 between the two small-diameter through holes 404, the other end of each of the two second flow guides 410 is bent in a direction away from each other, and the bending direction is towards the composite film. In this scheme, when the piston rod 403 pushes out the gas, the gas can enter the side wall of the second flow guide 410 through the small-diameter through hole 404 and flow along the direction of the second flow guide 410, and then a large amount of gas can move along the surface of the composite film under the action of suction from above, so as to complete the drying.

[0054] In this embodiment, after the composite film is coated, the glue solution is in a state similar to water, which may be attached to the guide roller 2 when passing through the guide roller 2, affecting the drying efficiency of the composite film. Therefore, in order to wipe the un-dried glue solution attached to the guide roller 2, the side wall of the second flow guide 410 near the guide roller 2 is provided with a wiping strip 411, and the wiping strip 411 is provided with an arc-shaped groove matching the size of the side surface of the guide roller 2. The part of the second flow guide 410 on both sides of the wiping strip 411 is bent away from the guide roller 2. In this scheme, the wiping strip 411 is arranged along the length direction of the guide roller 2, and the side wall thereof is provided with an arc-shaped groove to match the arc-shaped side surface of the guide roller 2. During the rotation of the guide roller 2, the wiping strip 411 can wipe the un-dried glue solution attached to the guide roller 2, so as to avoid the glue solution from being attached to the composite film again, which not only affects the flatness of the composite film, but also reduces the drying efficiency of the composite film. In addition, the part of the second flow guide 410 on both sides of the wiping strip 411 is bent away from the guide roller 2, which can increase the bending curvature of the second flow guide 410 and accurately guide the gas.

[0055] In this embodiment, since the composite film may drop glue during the drying process when entering the drying box, the small-diameter end of the frustum 401 is also provided with a storage cavity 412 between the two small-diameter through holes 404, and the small-diameter end of the frustum 401 is also provided with an inlet channel 413 in communication with the upper end of the storage cavity 412, and the uppermost second flow guide plate 410 is used to guide the liquid into the storage cavity 412 through the inlet channel 413. In this scheme, since the entire device is vertically upright, the glue on the composite film will drop on the side wall of the frustum 401 or flow into the upper second flow guide plate 410, and after entering the second flow guide plate 410, the glue can be quickly transported into the storage cavity 412 due to the shaking of the wiping strip 411 and the second flow guide plate 410 caused by the rotation of the cloth guide roller 2. In addition, a channel that can be externally communicated can be provided at the storage cavity 412, so that the residual glue can be externally transported.

[0056] In this embodiment, the preheating box 1 is uniformly provided with a plurality of second electric heating fans 6 on the side.

[0057] Embodiment 2:

[0058] The embodiment 2 provides a drying method of a vertical drying system based on a composite film, which comprises the following specific steps:

[0059] S1: sequentially introduce the composite film into the preheating box 1 and install the preheating box 1, and then start the second electric heating fan 6 on the side of the preheating box 1.

[0060] S2: detect the temperature in the preheating box 1 through the temperature sensor in the preheating box 1, and detect the temperature in the drying box 3 through the temperature sensor in the drying box 3, and when the temperatures in the preheating box 1 and the drying box 3 reach the same threshold value, start the telescopic motor 402 to begin telescoping and transport the composite film; when the piston rod 403 retreats, the elastic member 416 can pull the rotating plate 414 to rotate, and when the end of the rotating plate 414 abuts against the baffle 415, the small-diameter through hole 404 is closed at this time, and then the piston rod 403 continues to retreat, and at this time, the gas can be sucked into the piston hole from the suction hole 405; when the piston rod 403 advances, the elastic member 416 gradually relaxes, and the rotating plate 414 resets under the action of the torsional spring, and at this time, the small-diameter through hole 404 is opened, and in the advancing process of the piston rod 403, the end of the suction hole 405 is gradually closed by the side wall of the piston rod 403, and in the continuing advancing process, the internal gas can be pushed out from the small-diameter through hole 404; and with the increase of the pushed-in gas, the gas enters the gap between the side wall of the frustum 401 and the composite film, and moves along the length direction of the composite film, and when reaching the large-diameter end of the frustum 401, the gas enters the piston hole again under the suction force of the suction hole 405, and a circulating flow channel is formed.

[0061] S3: during the transmission process, when the temperature in the drying box 3 is lower than the threshold value, the first electric heat blower 406 is started to run; under the action of the first heat blower, suction can be formed at the rear end of the circulating flow channel, so as to improve the flow rate of the gas and make a large amount of gas flow along the composite film to improve the drying efficiency; in addition, since the gas flowing through the composite film will cause its temperature to decrease after heat exchange, the first heat blower can heat the cooled gas again to ensure the drying temperature of the gas and improve the drying efficiency.

[0062] In the above drying process, the wiping strip 411 can wipe the adhesive liquid attached to the guide roller 2 which has not been dried yet, so as to avoid the adhesive liquid from being attached to the composite film again, which will not only affect the flatness of the composite film, but also reduce the drying efficiency of the composite film; in addition, since the entire device is vertically upright, the adhesive liquid on the composite film will fall on the side wall of the prism 401 or flow into the second flow guide plate 410 above; after entering the second flow guide plate 410, the adhesive liquid can be quickly transported into the storage cavity 412 since the rotation of the guide roller 2 will cause the wiping strip 411 and the second flow guide plate 410 to vibrate; in addition, a channel that can be externally communicated can also be provided at the storage cavity 412, so as to transport the residual adhesive liquid outward.

[0063] Through the above scheme, the flow path and range of high-temperature gas are limited, so that the composite film can be quickly and efficiently dried; in this way, not only the number of guide rollers 2 and the length of the transmission path can be reduced, but also the floor area can be reduced and the drying efficiency can be improved.

[0064] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A composite membrane based vertical drying system, characterized in that, The utility model provides a kind of composite film drying device, including: Preheating box (1), the preheating box (1) is with several transverse cloth guide roller (2), several cloth guide roller (2) are staggered in vertical direction in turn and are distributed in S type; Drying box (3), the drying box (3) is located inside the preheating box (1), and the two ends of several cloth guide roller (2) are out of the side wall of the drying box (3), and there is a gap between the drying box (3);The upper end and the lower end of the drying box (3) are respectively left for the composite film to enter into inlet (301) and outlet (302); Several drying assemblies (4), several drying assemblies (4) are located in the drying box (3);The drying assembly (4) is located between the composite film on the upper and lower sides of the cloth guide roller (2). The drying assembly (4) includes a frustum (401), the small diameter end of the frustum (401) faces the cloth guide roller (2);The piston hole is brought on the shaft of the frustum (401), the large diameter end of the frustum (401) has a chamber, the chamber is brought with telescopic motor (402), the piston rod (403) of the telescopic motor (402) is located in the piston hole, and is compatible with the piston hole;The small diameter through hole (404) is brought on the small diameter end of the frustum (401), the small diameter through hole (404) is communicated with the piston hole, and the diameter is smaller than the diameter of the piston hole;The inside of the frustum (401) is also provided with suction hole (405), one end of the suction hole (405) is communicated with the piston hole, and the other end is communicated with the large diameter end of the frustum (401) The space side is communicated; The small diameter through hole (404) is square hole, the inner wall of the small diameter through hole (404) is hinged with rotating plate (414) on one side, and the other side is fixed with baffle (415), one end of the rotating plate (414) is hinged with the inner wall of the small diameter through hole (404) through torsional spring, the rotating plate (414) rotates to make the other end abut on the baffle (415), to close the small diameter through hole (404);The elastic element (416) is connected between the rotating plate (414) and the piston rod (403); The piston hole, small diameter through hole (404), frustum (401) side wall and composite film, the large diameter end of the frustum (401) The space side space, suction hole (405) form circulating flow channel in sequence.

2. A vertical drying system based on a composite film according to claim 1, characterized in that, The chamber includes intermediate chamber, upper chamber and lower chamber, the telescopic motor (402) is located in the intermediate chamber, the first electric heating fan (406) is brought in the upper chamber and lower chamber, the upper side of the upper chamber and the lower side of the lower chamber are provided with the diameter expansion port (407), the small diameter end of the diameter expansion port (407) is communicated with the air inlet of the first electric heating fan (406);The large diameter end of the diameter expansion port (407) is communicated with the circumferential space of the large diameter end of the frustum (401);The air outlet of the first electric heating fan (406) is communicated with the suction hole (405).

3. A vertical drying system based on a composite film according to claim 2, characterized in that, Both sides of the drying box (3) are through holes (408) that communicate with the other end of the suction hole (405), and the holes (408) communicate with the space outside the drying box (3).

4. A vertical drying system based on a composite film according to claim 2, characterized in that, The branch pipe (5) is provided with a filter device at the other end thereof.

5. A vertical drying system based on composite film according to claim 1, characterized in that, The suction hole (405) is located at one end of the piston hole and gradually expands in the direction of the large-diameter end of the frustum (401); the first flow guide plates (409) are uniformly distributed on the ring-shaped side wall of the suction hole (405), and the first flow guide plates (409) are curved in the direction of the one end of the piston hole.

6. A vertical drying system based on a composite film according to claim 1, characterized in that, Two second flow guide plates (410) are arranged on the small-diameter end of the frustum (401), and two small-diameter through holes (404) are arranged on the small-diameter end of the frustum (401) in an up-down distribution; one end of each of the two second flow guide plates (410) is connected to the small-diameter end of the frustum (401) between the two small-diameter through holes (404), and the other end of each of the two second flow guide plates (410) is curved in a direction away from each other, and the curved direction is towards the composite film.

7. A vertical drying system based on a composite film according to claim 6, characterized in that, The second flow guide plates (410) on the side wall close to the cloth guide roller (2) are provided with wiping strips (411), and the wiping strips (411) are provided with arc-shaped grooves that match the size of the side surface of the cloth guide roller (2); the second flow guide plates (410) on both sides of the wiping strips (411) are curved in a direction away from the cloth guide roller (2).

8. A vertical drying system based on a composite film according to claim 6, characterized in that, The small-diameter end of the frustum (401) is further provided with a storage cavity (412) located between the two small-diameter through holes (404); the small-diameter end of the frustum (401) is further provided with an inlet channel (413) in communication with the upper end position of the storage cavity (412), and the uppermost second flow guide plate (410) is used to guide the liquid into the storage cavity (412) through the inlet channel (413).

9. A vertical drying system based on composite film according to claim 1, characterized in that, The periphery of the preheating box (1) is uniformly provided with a plurality of second electric air heaters (6).

10. A drying method for a vertical drying system based on a composite film according to any one of claims 2 to 9, characterized in that, The method comprises the following steps: S1: sequentially introducing the composite film into the preheating box (1) and installing the preheating box (1), and then starting the second electric air heater (6) on the periphery of the preheating box (1); S2: detecting the temperature in the preheating box (1) through a temperature sensor in the preheating box (1), and detecting the temperature in the drying box (3) through a temperature sensor in the drying box (3), and when the temperatures in the preheating box (1) and the drying box (3) reach the same threshold value, starting the telescopic motor (402) to start telescoping and transmitting the composite film; S3: during the transmission process, when the temperature in the drying box (3) is lower than the threshold value, starting the first electric air heater (406) to start running.

Images