Drying device for plastic film production

Abstract

The drying device for the plastic film production comprises a box body, strip-shaped openings are formed in the inner walls of the left side and the right side of the box body, a plurality of material guide rollers are horizontally and rotatably arranged on the inner walls of the front side and the rear side of the box body in a penetrating mode, and the material guide rollers are arranged in a pairwise opposite mode in the vertical direction. A plastic film is guided into the box body along the strip-shaped opening to be matched with the material guide rollers for horizontal transfer, so that an air blower is matched with a roundabout heat conduction pipe and an S-shaped heat conduction cavity to blow hot air into a second guide pipe, and the second guide pipe is matched with a four-way pipe fitting, a third guide pipe, a three-way pipe fitting and a two-way pipe fitting to spray out the hot air along an air blowing spray head; the plastic films transferred among the multiple material guide rollers are effectively and rapidly dried, hot water in the circuitous heat conduction pipe is guided out after air blowing drying is completed, natural air is made to conduct air blowing cooling on the dried plastic films along the S-shaped heat conduction cavity in cooperation with a second guide pipe and an air blowing spray head, and the cooling efficiency of the dried plastic films is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a drying device for plastic film production. Background Art

[0002] Plastic film is made of polymer materials and is widely used in food packaging and farmland covering. After production, the plastic film needs to be dried and left to cool.

[0003] At present, when drying plastic film, it is not convenient to dry the plastic film quickly, the drying efficiency is low, and the plastic film needs to be left to cool for a long time after drying, and the cooling efficiency is low. Now a drying device for plastic film production is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies and defects in the prior art, the utility model proposes a drying device for plastic film production, which is used to solve the technical problems in the background technology that when drying plastic film, it is not convenient to dry the plastic film quickly, the drying efficiency is low, and the plastic film needs to be left to cool for a long time after drying, resulting in low cooling efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A drying device for plastic film production comprises a box body, wherein the left and right inner walls of the box body are provided with strip openings, and the front and rear inner walls of the box body are provided with a plurality of guide rollers that are horizontally rotatable and penetrate therethrough, and the plurality of guide rollers are vertically arranged opposite to each other in pairs, and a first partition is fixedly connected to the top surface at the center position of the box body, and the plastic film penetrates the strip openings on both sides and contacts with the plurality of guide rollers that are arranged opposite to each other in pairs, and a bellows is fixedly connected to the upper end of the box body, and a heat conduction mechanism is arranged in the bellows, and a blowing assembly is arranged at the upper right end of the box body, and the blowing assembly is connected to the right inner wall of the bellows close to the top surface, and a drying mechanism is connected between the bellows and the top surface of the box body.

[0007] Preferably, two limiting rollers are fixedly installed on the left and right end side walls of the box body, and the two limiting rollers on the same side are respectively arranged close to the top surface and the bottom surface of the strip-shaped opening, and the two limiting rollers are in contact with the plastic film passing through the strip-shaped opening, and the side wall of the first partition is seamlessly connected to the inner wall of the box body.

[0008] Preferably, a plurality of motors are fixedly mounted on the front end side wall of the box body, the roller shafts of the plurality of guide rollers at the bottom are coaxially fixedly connected to a driving wheel at one end outside the box body, and the roller shafts of the plurality of guide rollers at the top are coaxially fixedly connected to a driven wheel at one end outside the box body, the driving wheel and the driven wheel on the same side are connected by belt drive, and the driving shafts of the plurality of motors are respectively fixedly connected to the roller shafts of the plurality of guide rollers at the bottom.

[0009] Preferably, the heat conduction mechanism includes three second partitions fixedly connected to the inner wall of the bellows, the three second partitions divide the bellows into an S-shaped heat conduction chamber, the same circuitous heat conduction pipe is fixedly mounted on the three second partitions, the free ends of both sides of the circuitous heat conduction pipe horizontally penetrate the left and right inner walls of the bellows near the bottom respectively, a circulation pump is fixedly installed at the upper end of the box body located on the left side of the bellows, the circulation pump is connected to one end of the circuitous heat conduction pipe located at the bellows, and the drying mechanism is connected to the bottom of the S-shaped heat conduction chamber.

[0010] Preferably, the blowing assembly includes a support frame fixedly mounted on the upper right end of the box body, a blower is fixedly mounted on the upper end of the support frame, the output end of the blower is connected to a first duct, and the end of the first duct away from the blower is connected to the right inner wall of the bellows close to the top surface.

[0011] Preferably, the drying mechanism includes two second conduits vertically connected and arranged on the top surface of the box body, the two second conduits are connected and arranged with the bottom of the S-shaped heat conduction cavity, the two second conduits are respectively located on the left and right sides of the first partition, the two second conduits are located between two adjacent material guide rollers on the left and right, hydraulic valves are fixedly installed on the two second conduits, the lower ends of the two second conduits are connected and arranged with a four-way pipe fitting, the four-way pipe fitting is connected and arranged with two third conduits, the two third conduits are connected and arranged with two three-way pipe fittings and two two-way pipe fittings, the four-way pipe fitting, the two three-way pipe fittings and the two two-way pipe fittings are connected and arranged with air blast nozzles, and the nozzles of the several air blast nozzles are vertically arranged downward.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The plastic film is introduced into the box along the strip opening and transported horizontally in cooperation with a plurality of guide rollers, so that the blower cooperates with the circuitous heat conduction pipe and the S-shaped heat conduction cavity to blow hot air into the second conduit, so that the second conduit cooperates with the four-way pipe fitting, the third pipe, the three-way pipe fitting and the two-way pipe fitting to spray the hot air along the blast nozzle, so that the plastic film transported between the plurality of guide rollers is effectively dried quickly, and after the blast drying is completed, the hot water in the circuitous heat conduction pipe is exported, so that the natural wind blows and cools the dried plastic film along the S-shaped heat conduction cavity in cooperation with the second conduit and the blast nozzle, thereby improving the cooling efficiency of the plastic film after drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a perspective schematic diagram of a drying device for plastic film production proposed by the utility model;

[0015] Figure 2 This is a structural schematic diagram of a drying device for plastic film production proposed by the utility model;

[0016] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0017] Figure 4 The utility model discloses a drying mechanism of a drying device for producing plastic films.

[0018] In the figure: 1 box body, 2 strip opening, 3 material guide roller, 4 first partition, 5 bellows, 6 limit roller, 7 motor, 8 driven wheel, 9 second partition, 10 S-type heat conduction cavity, 11 circuitous heat conduction pipe, 12 circulation pump, 13 support frame, 14 blower, 15 first conduit, 16 second conduit, 17 hydraulic valve, 18 four-way pipe fitting, 19 third conduit, 20 three-way pipe fitting, 21 two-way pipe fitting, 22 blast nozzle. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4A drying device for plastic film production includes a box body 1, and strip openings 2 are provided on the inner walls of the left and right sides of the box body 1. Two limiting rollers 6 are fixedly installed on the side walls of the left and right ends of the box body 1. The two limiting rollers 6 on the same side are respectively arranged close to the top surface and the bottom surface of the strip opening 2. The two limiting rollers 6 are in contact with the plastic film passing through the strip opening 2. The two limiting rollers 6 are used to limit the plastic film passing through the strip opening 2 to avoid wrinkles during operation and guidance. A first partition plate 4 is fixedly connected to the top surface of the center position of the box body 1, and the side walls of the first partition plate 4 are seamlessly connected to the inner wall of the box body 1. A plurality of guide rollers 3 are horizontally rotated and penetrated on the inner walls of the front and rear sides of the box body 1. The plurality of guide rollers 3 are arranged opposite to each other in pairs in the vertical direction. The box body 1 A plurality of motors 7 are fixedly installed on the front end side wall, and the motors 7 drive the plurality of lower material guide rollers 3 to rotate, and the lower material guide rollers 3 drive the coaxially connected driving wheel (not shown in the figure) to rotate, and the roller shafts of the plurality of lower material guide rollers 3 are coaxially fixedly connected with a driving wheel (not shown in the figure) at one end located outside the box body 1, and the roller shafts of the plurality of upper material guide rollers 3 are coaxially fixedly connected with a driven wheel 8 at one end located outside the box body 1, and the driving wheel and the driven wheel 8 on the same side are connected by belt transmission, and the rotation of the driving wheel (not shown in the figure) drives the driven wheel 8 connected by the belt transmission to rotate, and the rotation of the driven wheel 8 drives the coaxially connected upper material guide roller 3 to rotate, and the driving shafts of the plurality of motors 7 are respectively fixedly connected to the roller shafts of the plurality of lower material guide rollers 3.

[0022] The plastic film passes through the strip openings 2 on both sides and contacts with a plurality of material guide rollers 3 arranged opposite to each other. A bellows 5 is fixedly connected to the upper end of the box body 1. A heat conduction mechanism is arranged in the bellows 5. The heat conduction mechanism includes three second partitions 9 fixedly connected to the inner wall of the bellows 5. The three second partitions 9 divide the bellows 5 into an S-shaped heat conduction cavity 10. The S-shaped heat conduction cavity 10 allows the blast to fully contact and exchange heat with the circuitous heat conduction pipe 11. The same circuitous heat conduction pipe 11 is fixedly mounted on the three second partitions 9. Both sides of the circuitous heat conduction pipe 11 are self- The ends are respectively horizontally penetrated through the left and right inner walls of the bellows 5 near the bottom, and a circulation pump 12 is fixedly installed on the upper end of the box body 1 located on the left side of the bellows 5. The circulation pump 12 is connected with the circuitous heat-conducting pipe 11 located at one end of the bellows 5. The circulation pump 12 is used to circulate hot water into the circuitous heat-conducting pipe 11, and when cooling, the hot water is discharged from the circuitous heat-conducting pipe 11. The drying mechanism is connected with the bottom of the S-shaped heat-conducting cavity 10. A blast assembly is provided on the upper right end of the box body 1, and the blast assembly is connected to the right inner wall of the bellows 5 near the top surface. The blower assembly includes a support frame 13 fixedly mounted on the upper end of the right side of the box body 1, and a blower 14 is fixedly mounted on the upper end of the support frame 13. The blower 14 introduces natural wind into the wind box 5, so that the natural wind is heat exchanged along the S-shaped heat conduction cavity 10 in cooperation with the circuitous heat conduction pipe 11, until the hot wind is introduced into the blower nozzle 22 along the second conduit 16 in cooperation with the four-way pipe 18, the third conduit 19, the three-way pipe 20 and the two-way pipe 21, so that the left side of the blower nozzle 22 performs hot air drying on the plastic film on the left side of the first partition 4. When drying, only the hot water in the circuitous heat conducting pipe 11 needs to be discharged during cooling, and the natural wind generated by the blower 14 is introduced into the blast nozzle 22 along the S-shaped heat conducting cavity 10 in cooperation with the second conduit 16, the four-way pipe fitting 18, the third conduit 19, the three-way pipe fitting 20 and the two-way pipe fitting 21, and the dried plastic film is cooled by blasting, so as to improve the cooling efficiency of the plastic film after drying. The output end of the blower 14 is connected with the first conduit 15, and the end of the first conduit 15 away from the blower 14 is connected with the right inner wall of the bellows 5 close to the top surface.

[0023] A drying mechanism is provided between the wind box 5 and the top surface of the box body 1, and the drying mechanism includes two second conduits 16 vertically connected and provided on the top surface of the box body 1, and the two second conduits 16 are both connected and provided with the bottom of the S-shaped heat conduction cavity 10, and the two second conduits 16 are respectively located on the left and right sides of the first partition plate 4, and the two second conduits 16 are located between the two adjacent material guide rollers 3 on the left and right sides, and the two second conduits 16 are fixedly installed with hydraulic valves 17, and the hydraulic valves 17 are used to control the gas flow in the second conduits 16, and the hydraulic valves 17, the motor 7, the blower 14 and the circulating pump 12 are all controlled by the external PLC console to start and stop. The lower ends of the two second conduits 16 are connected with a four-way pipe fitting 18, and two third conduits 19 are connected with the four-way pipe fitting 18. Two three-way pipe fittings 20 and two two-way pipe fittings 21 are connected with the two third conduits 19. The four-way pipe fitting 18, the three-way pipe fitting 20 and the two-way pipe fitting 21 are used to connect multiple blast nozzles 22 with the second conduits 16. The four-way pipe fitting 18, the two three-way pipe fittings 20 and the two two-way pipe fittings 21 are connected with blast nozzles 22. The nozzles of the blast nozzles 22 are vertically arranged downward, and the blast nozzles 22 are used to blow hot air or natural wind toward the plastic film.

[0024] When the utility model is in use, the plastic film is passed through the left strip opening 2 and through a plurality of guide rollers 3 arranged opposite to each other, until the plastic film is discharged along the right strip opening 2. When the plastic film is running, the two guide rollers 3 on the same side can limit the plastic film to avoid wrinkles during drying. When the plastic film is transported along the plurality of guide rollers 3, the hydraulic valve 17 on the right second conduit 16 is closed and the hydraulic valve 17 on the left is started, the circulation pump 12 is started to circulate hot water into the circuitous heat conduction pipe 11, the blower 14 on the support frame 13 is started, so that the blower 14 introduces natural wind into the bellows 5, so that the natural wind exchanges heat along the S-shaped heat conduction cavity 10 in cooperation with the circuitous heat conduction pipe 11. Until the hot air is introduced into the blast nozzle 22 along the second duct 16 in cooperation with the four-way pipe fitting 18, the third duct 19, the three-way pipe fitting 20 and the two-way pipe fitting 21, so that the left blast nozzles 22 perform hot air drying on the plastic film on the left side of the first partition 4, then the left hydraulic valve 17 is closed and the right hydraulic valve 17 is started, and the circulation pump 12 is started at the same time to discharge the hot water from the circuitous heat conduction pipe 11. At this time, the natural wind generated by the blower 14 is introduced into the blast nozzle 22 along the S-shaped heat conduction cavity 10 in cooperation with the second duct 16, the four-way pipe fitting 18, the third duct 19, the three-way pipe fitting 20 and the two-way pipe fitting 21, and the dried plastic film is cooled by blasting, thereby improving the cooling efficiency of the plastic film after drying.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying device for plastic film production, comprising a housing (1), characterized in that: The left and right inner walls of the box body (1) are both provided with strip openings (2); the front and rear inner walls of the box body (1) are horizontally rotatably penetrated by a plurality of material guide rollers (3); the plurality of material guide rollers (3) are arranged opposite to each other in the vertical direction; a first partition plate (4) is fixedly connected to the top surface at the center of the box body (1); the plastic film penetrates the strip openings (2) on both sides and contacts the plurality of material guide rollers (3) arranged opposite to each other in pairs; a bellows (5) is fixedly connected to the upper end of the box body (1); a heat conduction mechanism is arranged inside the bellows (5); a blast assembly is arranged at the upper right end of the box body (1); the blast assembly is connected to the right inner wall of the bellows (5) close to the top surface; a drying mechanism is connected between the bellows (5) and the top surface of the box body (1).

2. A drying device for plastic film production according to claim 1, characterized in that: Two limiting rollers (6) are fixedly mounted on the left and right side walls of the box body (1); the two limiting rollers (6) on the same side are respectively arranged close to the top surface and the bottom surface of the strip-shaped opening (2); the two limiting rollers (6) are in contact with the plastic film passing through the strip-shaped opening (2); and the side wall of the first partition (4) is seamlessly connected to the inner wall of the box body (1).

3. A drying device for plastic film production according to claim 1, characterized in that: A plurality of motors (7) are fixedly mounted on the front end side wall of the box body (1); the roller shafts of the plurality of guide rollers (3) located below are coaxially fixedly connected to a driving wheel at one end located outside the box body (1); the roller shafts of the plurality of guide rollers (3) located above are coaxially fixedly connected to a driven wheel (8) at one end located outside the box body (1); the driving wheel and the driven wheel (8) on the same side are connected by belt transmission; and the drive shafts of the plurality of motors (7) are respectively fixedly connected to the roller shafts of the plurality of guide rollers (3) located below.

4. A drying device for plastic film production according to claim 1, characterized in that: The heat conduction mechanism comprises three second partitions (9) fixedly connected to the inner wall of the wind box (5), the three second partitions (9) dividing the inside of the wind box (5) into an S-shaped heat conduction chamber (10), the three second partitions (9) being fixedly mounted with a same circuitous heat conduction pipe (11), the free ends of both sides of the circuitous heat conduction pipe (11) respectively horizontally penetrating the left and right inner walls of the wind box (5) near the bottom, a circulation pump (12) being fixedly mounted on the upper end of the box body (1) located on the left side of the wind box (5), the circulation pump (12) being connected to one end of the circuitous heat conduction pipe (11) located on the wind box (5), and the drying mechanism being connected to the bottom of the S-shaped heat conduction chamber (10).

5. A drying device for plastic film production according to claim 1, characterized in that: The air blowing assembly comprises a support frame (13) fixedly mounted on the upper right end of the box body (1); a blower (14) is fixedly mounted on the upper end of the support frame (13); an output end of the blower (14) is connected to a first duct (15); an end of the first duct (15) away from the blower (14) is connected to the right inner wall of the bellows (5) close to the top surface.

6. A drying device for plastic film production according to claim 4, characterized in that: The drying mechanism comprises two second conduits (16) vertically connected and arranged on the top surface of the box body (1), the two second conduits (16) are connected and arranged with the bottom of the S-shaped heat conduction cavity (10), the two second conduits (16) are respectively located on the left and right sides of the first partition plate (4), the two second conduits (16) are located between two adjacent material guide rollers (3) on the left and right, and the two second conduits (16) are fixedly mounted with hydraulic valves (17). The lower ends of the pipes (16) are connected to a four-way pipe fitting (18), two third conduits (19) are connected to the four-way pipe fitting (18), two three-way pipe fittings (20) and two two-way pipe fittings (21) are connected to the two third conduits (19), and air blast nozzles (22) are connected to the four-way pipe fitting (18), the two three-way pipe fittings (20) and the two two-way pipe fittings (21), and the nozzles of the plurality of air blast nozzles (22) are vertically arranged downward.

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