An efficient paper tube drying equipment

Abstract

The present invention discloses a high-efficiency paper tube drying device, which includes a hot air supply pipe, a drying box and a drying mechanism; the drying mechanism includes an inner air outlet pipe, an outer air outlet pipe, an intermediate air guide disc and a support assembly. A first air cavity is provided inside the inner air outlet pipe, and the inner air outlet pipe is connected to the hot air supply pipe. The intermediate air guide disc is sleeved on the inner air outlet pipe, and a wind guide cavity is provided inside the intermediate air guide disc. One end of the outer air outlet pipe is sleeved on the intermediate air guide disc, and a second air cavity is provided inside the wall of the outer air outlet pipe. The wind guide cavity is used to connect the first air cavity and the second air cavity. The support assembly is arranged outside the inner air outlet pipe, and the paper tube can be sleeved on the support assembly. Inner air outlet holes corresponding to the inner wall of the paper tube are evenly distributed on the wall of the inner air outlet pipe, and outer air outlet holes corresponding to the outer wall of the paper tube are evenly distributed on the inner wall of the outer air outlet pipe. The high-efficiency paper tube drying device of the present invention can dry both the inner and outer sides of the paper tube simultaneously, thereby improving the drying efficiency and effect.

Description

Technical Field

[0001] The present invention relates to a high-efficiency paper tube drying device. Background Art

[0002] The raw materials for paper tubes include kraft paper, white cardboard, laminated paper, etc. Before the production of paper tubes, the corresponding treatments need to be carried out on the paper. First of all, the raw material paper needs to be laminated to add a layer of film to make it waterproof, oil-proof, heat-sealable, smooth and beautiful. Then, if the paper tube needs to be printed, the paper is printed by a printing press. Again, the laminated paper needs to be cut and rewound by a paper tube slitting and rewinding machine to be made into appropriate sizes. After that, through gluing, tube winding and cutting on a paper tube machine, paper tubes of different specifications are made. Then, the produced paper tubes are dried by a paper tube drying device, and the paper tubes are basically formed. Drying the raw materials of the paper tubes produced in the paper tube machine is an important link in paper tube production, evaporating the glue during tube winding, making the paper tubes more stable after forming, and directly determining the shape and hardness of the paper tubes. The traditional drying method is to place the paper tubes in a drying device for heating and drying. However, the existing drying devices usually can only dry the outer walls of the paper tubes, and the drying time is relatively long. Especially for the drying of large paper tubes, the time consumption is even longer, reducing the production efficiency of enterprises. Moreover, due to the uneven heating inside and outside the paper tubes, the paper tubes are easily deformed, affecting the product quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a high-efficiency paper tube drying device with a reasonable structure, which can dry the inner and outer sides of the paper tubes simultaneously, thereby improving the drying efficiency and effect.

[0004] To achieve the above purpose, the technical solution of the present invention is to design a high-efficiency paper tube drying device, which includes a hot air supply pipe and a drying box, and a plurality of drying mechanisms arranged inside the drying box; the drying box includes a bottom plate, a top plate and side walls, the side walls include a first side wall and a second side wall arranged opposite to each other, an air outlet is provided on the top plate, and a pick-and-place opening for picking and placing paper tubes is provided on the second side wall, and an openable door panel is provided in the pick-and-place opening.

[0005] The drying mechanism includes an inner air outlet pipe, an outer air outlet pipe, an intermediate air guide disc and a support assembly. A first air cavity is provided inside the inner air outlet pipe. One end of the inner air outlet pipe penetrates through the first side wall and is connected to the hot air supply pipe. The intermediate air guide disc is sleeved outside the inner air outlet pipe through a central hole. One side disc surface of the intermediate air guide disc is fixedly connected to the first side wall through a connecting sleeve. And a wind guide cavity is provided inside the intermediate air guide disc. A plurality of first ventilation openings are provided on the pipe wall of the inner air outlet pipe along the circumferential direction. A plurality of second ventilation openings are provided on the hole wall of the central hole of the intermediate air guide disc along the circumferential direction. The second ventilation openings are used to communicate with the first ventilation openings. One end of the outer air outlet pipe is sleeved outside the intermediate air guide disc. A second air cavity is provided inside the pipe wall of the outer air outlet pipe. A plurality of third ventilation openings are provided on the outer wall of the intermediate air guide disc along the circumferential direction. A plurality of fourth ventilation openings are provided on the inner wall of the outer air outlet pipe along the circumferential direction. The fourth ventilation openings are used to communicate with the third ventilation openings. The support assembly is arranged outside the inner air outlet pipe. The paper tube can be sleeved outside the support assembly. Inner air outlet holes corresponding to the inner wall of the paper tube are evenly distributed on the pipe wall of the inner air outlet pipe. Outer air outlet holes corresponding to the outer wall of the paper tube are evenly distributed on the inner wall of the outer air outlet pipe.

[0006] Preferably, the air outlet is connected to a return air pipe. The other end of the return air pipe is connected to the hot air supply pipe. And an air extractor, a dehumidifier and an electric heater are provided on the return air pipe.

[0007] Preferably, the support assembly includes two inner ring bodies sleeved outside the inner air outlet pipe. The inner ring bodies are connected to an outer ring body through connecting rods. A plurality of mounting holes are provided on the outer wall of the outer ring body along the circumferential direction. Marbles are provided in the mounting holes. Springs are connected between the marbles and the bottom of the mounting holes. Part of the marbles protrude from the outer wall of the outer ring body. And the marbles abut against the inner wall of the paper tube.

[0008] Preferably, the marbles are made of rubber.

[0009] Preferably, the outer air outlet pipe and the intermediate air guide disc are in rotational fit. A first toothed ring is provided on the outer wall of the outer air outlet pipe. A driving motor is installed outside the first side wall. The output shaft of the driving motor penetrates through the first side wall and is connected to a first gear meshing with the first toothed ring. A rotating shaft is connected to the disc surface of the intermediate air guide disc far from the connecting sleeve through a bearing. A second gear is connected to the rotating shaft. A second toothed ring is provided on the inner wall of the outer air outlet pipe. The inner ring bodies are rotatably sleeved outside the inner air outlet pipe through bearings. And a limiting retaining ring is provided on the outer wall of the inner ring body close to the intermediate air guide disc among the two inner ring bodies. A third toothed ring is provided on the limiting retaining ring. The second gear is located between the second toothed ring and the third toothed ring. And the second gear meshes with the second toothed ring and the third toothed ring respectively.

[0010] The advantages and beneficial effects of the present invention are as follows: It provides a high-efficiency paper tube drying device with a reasonable structure, which can dry both the inner and outer sides of the paper tube simultaneously, thereby improving the drying efficiency and effect. In addition, it can rotate the paper tube and the outer air outlet pipe, and the rotation direction of the paper tube is opposite to that of the outer air outlet pipe, which is beneficial to making the paper tube heat more evenly, thereby further improving the drying efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the present invention.

[0012] Figure 2 is Figure 1 an enlarged view of part A in

[0013] Figure 3 is Figure 1 an enlarged view of part B in

[0014] Figure 4 is Figure 1 an enlarged view of part C in EMBODIMENTS

[0015] The following further describes the specific embodiments of the present invention in conjunction with the drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0016] The technical solution of the specific implementation of the present invention is as follows:

[0017] As Figures 1 to 4 shown, a high-efficiency paper tube drying device includes a hot air supply pipe 1 and a drying box 2, and a plurality of drying mechanisms arranged inside the drying box 2; the drying box 2 includes a bottom plate 3, a top plate 4 and side walls, the side walls include a first side wall 5 and a second side wall 6 arranged opposite to each other, an exhaust port 7 is provided on the top plate 4, and a pick-up and placement port for picking up and placing the paper tube 100 is provided on the second side wall 6, and an openable door panel 8 is provided in the pick-up and placement port;

[0018] The drying mechanism includes an inner air outlet pipe 9, an outer air outlet pipe 10, an intermediate air guiding disc 11 and a support assembly. A first air cavity is provided inside the inner air outlet pipe 9. One end of the inner air outlet pipe 9 penetrates through the first side wall 5 and is connected to the hot air supply pipe 1. The intermediate air guiding disc 11 is sleeved outside the inner air outlet pipe 9 through a central hole. One side disc surface of the intermediate air guiding disc 11 is fixedly connected to the first side wall 5 through a connecting sleeve 12. And a wind guiding cavity is provided inside the intermediate air guiding disc 11. A plurality of first ventilation openings 13 are circumferentially provided on the pipe wall of the inner air outlet pipe 9. The first ventilation openings 13 communicate with the first air cavity. A plurality of second ventilation openings 14 are circumferentially provided on the pore wall of the central hole of the intermediate air guiding disc 11. The second ventilation openings 14 communicate with the wind guiding cavity. The second ventilation openings 14 are used to communicate with the first ventilation openings 13. One end of the outer air outlet pipe 10 is sleeved outside the intermediate air guiding disc 11. A second air cavity is provided inside the pipe wall of the outer air outlet pipe 10. A plurality of third ventilation openings 15 are circumferentially provided on the outer wall of the intermediate air guiding disc 11. The third ventilation openings 15 communicate with the wind guiding cavity. A plurality of fourth ventilation openings 16 are circumferentially provided on the inner wall of the outer air outlet pipe 10. The fourth ventilation openings 16 communicate with the second air cavity. The fourth ventilation openings 16 are used to communicate with the third ventilation openings 15. The support assembly is arranged outside the inner air outlet pipe 9. The paper tube 100 can be sleeved outside the support assembly. Inner air outlet holes 17 corresponding to the inner wall of the paper tube 100 are evenly distributed on the pipe wall of the inner air outlet pipe 9. Outer air outlet holes 18 corresponding to the outer wall of the paper tube 100 are evenly distributed on the inner wall of the outer air outlet pipe 10. By adopting the above scheme, when the high-efficiency paper tube drying equipment of the present invention is in use: First, open the door panel 8, sleeve the paper tube 100 to be dried outside the support assembly, so that the inner air outlet pipe 9 and the outer air outlet pipe 10 are respectively located inside and outside the paper tube 100, and a certain gap is left between each of them and the paper tube 100. Then close the door panel 8 to complete the loading operation of the paper tube 100. When performing the drying operation, hot air is conveyed into the first air cavity of the inner air outlet pipe 9 through the hot air supply pipe 1. The hot air flow entering the inner air outlet pipe 9 will be divided into two streams at the first ventilation openings 13. One stream of hot air flow continues to flow into the inner air outlet pipe 9 and blows towards the inner wall of the paper tube 100 through the inner air outlet holes 17. The other stream of hot air flow flows into the second air cavity of the outer air outlet pipe 10 through the intermediate air guiding disc 11 and blows towards the outer wall of the paper tube 100 through the outer air outlet holes 18, so as to realize drying the inner and outer sides of the paper tube 100 simultaneously. After the drying operation is completed, open the door panel 8 and take out the paper tube 100.

[0019] Further, an air return pipe 19 is connected to the air outlet 7. The other end of the air return pipe 19 is connected to the hot air supply pipe 1, and an air extractor 20, a dehumidifier 21, and an electric heater 22 are provided on the air return pipe 19. By adopting the above solution, the air with a higher temperature in the drying box 2 can be drawn into the air return pipe 19, dehumidified and heated by the dehumidifier 21 and the electric heater 22, and then discharged into the hot air supply pipe 1 for recycling, so as to achieve the purpose of energy conservation and environmental protection.

[0020] Further, the support assembly includes two inner ring bodies 23 sleeved outside the inner air outlet pipe 9. The inner ring bodies 23 are connected to an outer ring body 25 through connecting rods 24. A plurality of mounting holes 26 are provided on the outer wall of the outer ring body 25 in the circumferential direction. Marbles 27 are provided in the mounting holes 26. A spring 28 is connected between the marble 27 and the bottom of the mounting hole 26. Part of the marble 27 protrudes from the outer wall of the outer ring body 25, and the marble 27 abuts against the inner wall of the paper tube 100. By adopting the above solution, during the process of sleeving the paper tube 100 on the support assembly, the paper tube 100 will contact the marble 27 and squeeze the marble 27 to move in the direction of the mounting hole 26. The spring 28 will be compressed during the movement of the marble; when the paper tube 100 is sleeved in place, the two inner ring bodies 23 are respectively located at both ends of the paper tube 100, and the marbles 27 on the outer ring body 25 will tightly abut against the paper tube 100 through the elastic force of the spring 28, and through the frictional force between the marble 27 and the paper tube 100, the paper tube 100 and the support assembly will be relatively fixed, avoiding the phenomenon of shaking of the paper tube 100 during the drying process.

[0021] Further, the marble 27 is made of rubber.

[0022] Further, the outer air outlet pipe 10 is rotationally engaged with the middle air guide disc 11. A first toothed ring 29 is provided on the outer wall of the outer air outlet pipe 10. A driving motor 30 is installed on the outer side of the first side wall 5. The output shaft of the driving motor 30 penetrates through the first side wall 5 and is connected with a first gear 31 that meshes with the first toothed ring 29. A rotating shaft 32 is connected to the disc surface of the middle air guide disc 11 on the side away from the connecting sleeve 12 through a bearing 50. The rotating shaft 32 is connected with a second gear 33. A second toothed ring 34 is provided on the inner wall of the outer air outlet pipe 10. The inner ring body 23 is rotatably sleeved outside the inner air outlet pipe 9 through a bearing 50. A limiting retaining ring 35 is provided on the outer wall of the inner ring body 23 of the two inner ring bodies 23 that is close to the middle air guide disc 11. The limiting retaining ring 35 is used to block and limit the paper tube 100. A third toothed ring 36 is provided on the limiting retaining ring 35. The second gear 33 is located between the second toothed ring 34 and the third toothed ring 36, and the second gear 33 meshes with the second toothed ring 34 and the third toothed ring 36 respectively. By adopting the above solution, during the drying operation, by starting the driving motor 30 to run and drive the first gear 31 to rotate, the first gear 31 drives the outer air outlet pipe 10 to rotate through meshing with the first toothed ring 29. After the outer air outlet pipe 10 rotates, it will also drive the second gear 33 to rotate through meshing of the second toothed ring 34 and the second gear 33. The second gear 33 drives the limiting retaining ring 35 and the inner ring body 23 connected to the limiting retaining ring 35 to rotate through meshing with the third toothed ring 36. Thus, the outer ring body 25 is driven to rotate by the inner ring body 23. The outer ring body 25 drives the paper tube 100 to rotate through the frictional force between the marbles 27 and the paper tube 100, and the rotation direction of the paper tube 100 is opposite to that of the outer air outlet pipe 10. By rotating the outer air outlet pipe 10 and the paper tube 100, the inner and outer wall surfaces of the paper tube 100 can be heated more evenly, so as to improve the drying efficiency and effect.

[0023] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An energy-efficient paper tube drying device, comprising a hot air supply pipe, a drying box, and a plurality of drying mechanisms arranged inside the drying box, characterized in that, The drying box includes a bottom plate, a top plate and side walls. The side walls include a first side wall and a second side wall which are oppositely arranged. An air outlet is provided on the top plate, and a pick-up and placement opening for picking up and placing paper tubes is provided on the second side wall. An openable door panel is provided in the pick-up and placement opening. The drying mechanism includes an inner air outlet pipe, an outer air outlet pipe, an intermediate air guide disc and a support assembly. A first air cavity is provided inside the inner air outlet pipe. One end of the inner air outlet pipe penetrates through the first side wall and is connected to a hot air supply pipe. The intermediate air guide disc is sleeved outside the inner air outlet pipe through a central hole. One side disc surface of the intermediate air guide disc is fixedly connected to the first side wall through a connecting sleeve. A guide air cavity is provided inside the intermediate air guide disc. A plurality of first ventilation openings are provided on the pipe wall of the inner air outlet pipe along the circumferential direction. A plurality of second ventilation openings are provided on the wall of the central hole of the intermediate air guide disc along the circumferential direction. The second ventilation openings are used to communicate with the first ventilation openings. One end of the outer air outlet pipe is sleeved outside the intermediate air guide disc. A second air cavity is provided inside the pipe wall of the outer air outlet pipe. A plurality of third ventilation openings are provided on the outer wall of the intermediate air guide disc along the circumferential direction. A plurality of fourth ventilation openings are provided on the inner wall of the outer air outlet pipe along the circumferential direction. The fourth ventilation openings are used to communicate with the third ventilation openings. The support assembly is arranged outside the inner air outlet pipe. The paper tube can be sleeved outside the support assembly. Inner air outlet holes corresponding to the inner wall of the paper tube are evenly distributed on the pipe wall of the inner air outlet pipe. Outer air outlet holes corresponding to the outer wall of the paper tube are evenly distributed on the inner wall of the outer air outlet pipe. The support assembly includes two inner rings sleeved outside the inner air outlet pipe. The inner rings are connected to an outer ring through connecting rods. A plurality of mounting holes are provided on the outer wall of the outer ring along the circumferential direction. Marbles are provided in the mounting holes. Springs are connected between the marbles and the bottom of the mounting holes. Part of the marbles protrude from the outer wall of the outer ring, and the marbles abut against the inner wall of the paper tube. The outer air outlet pipe and the intermediate air guide disc are in rotational cooperation. A first toothed ring is provided on the outer wall of the outer air outlet pipe. A driving motor is installed outside the first side wall. The output shaft of the driving motor penetrates through the first side wall and is connected to a first gear meshing with the first toothed ring. A rotating shaft is connected to the disc surface of the intermediate air guide disc far from the connecting sleeve through a bearing. The rotating shaft is connected to a second gear. A second toothed ring is provided on the inner wall of the outer air outlet pipe. The inner rings are rotatably sleeved outside the inner air outlet pipe through bearings. A limiting retaining ring is provided on the outer wall of the inner ring close to the intermediate air guide disc among the two inner rings. A third toothed ring is provided on the limiting retaining ring. The second gear is located between the second toothed ring and the third toothed ring, and the second gear meshes with the second toothed ring and the third toothed ring respectively.

2. The high-efficiency paper tube drying equipment according to claim 1, characterized in that, The air outlet is connected to a return air pipe. The other end of the return air pipe is connected to the hot air supply pipe. A suction fan, a dehumidifier and an electric heater are provided on the return air pipe.

3. The high-efficiency paper tube drying equipment according to claim 2, wherein The marbles are made of rubber.

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