Hot air drying device for barrier paper

Abstract

The utility model discloses a hot air drying device for barrier paper, and belongs to the technical field of drying equipment. The device comprises a drying box and paper, the drying box comprises a drying device and a dehumidification device arranged in the drying box, the dehumidification device comprises a filling device and a dehumidifier, the drying device comprises a heater, an air outlet header pipe and an air outlet used for evenly spraying out hot air, and the heater is communicated with the interior of a dryer through the air outlet header pipe. By arranging the air outlets with different lengths, the filling device, the filter screen and the dehumidifier, not only can the drying effect be further enhanced, but also moisture formed in the drying process can be completely adsorbed and removed, the guide roller is prevented from rusting, and the production quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment, and in particular relates to a hot air drying device for barrier paper. Background Art

[0002] As petroleum resources are gradually depleted, biomass-based barrier packaging materials are gaining more and more attention as green alternatives to traditional petroleum-based plastic packaging. Lignin, as the second most abundant natural polymer in nature, is also the only renewable resource rich in repeating benzene ring structural units. It has the advantages of biodegradability, biocompatibility and excellent processability. At present, most lignin is still incinerated as an industrial by-product, and its high-value utilization is relatively low. Although lignin has a unique chemical structure and functional properties such as water resistance, solvent resistance, anti-aging, and UV resistance, it has great potential in the preparation of bio-based barrier materials.

[0003] However, the existing drying devices have low drying efficiency and usually directly discharge the water vapor generated during the drying process, which damages the environment. It is unable to completely absorb and remove moisture, resulting in heavy moisture in the paper. The guide rollers are rusted and easily cause paper defects, affecting product quality. Summary of the invention

[0004] The technical problem solved by the utility model is to provide a hot air drying device for barrier paper, which can improve the drying efficiency, increase the dehumidification strength, prevent the product from rusting, and improve the product quality.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A hot air drying device for barrier paper comprises a drying box and paper, wherein the drying box comprises a drying device and a dehumidifying device arranged inside the drying box, wherein the dehumidifying device comprises a filling device and a dehumidifier, and the drying device comprises a heater, an air outlet main pipe and an air outlet for evenly ejecting hot air, wherein the heater is connected to the interior of the drying box through the air outlet main pipe.

[0007] Preferably, the heater is arranged on the top of the drying box, and a blower is arranged on one side of the heater.

[0008] Preferably, the air outlet end of the main air outlet pipe is connected to the air inlet end of the paper drying branch pipe, and the air outlet end of the paper drying branch pipe is connected to the air outlet, and the air outlet includes 1 first air outlet, 2 second air outlets and 4 third air outlets.

[0009] Preferably, the first air outlet, the second air outlet and the third air outlet are all in the shape of a gradually expanding semi-conical shape, the first air outlet is arranged at the lower middle part of the air outlet main pipe, the second air outlet is symmetrically arranged on both sides of the first air outlet, and the third air outlet is arranged at the paper inlet and outlet of the drying box.

[0010] Preferably, the distance between the first air outlet and the paper is greater than the distance between the second air outlet and the paper, and the distance between the second air outlet and the paper is greater than the distance between the third air outlet and the paper.

[0011] Preferably, a guide roller is arranged below the paper, and a filler device, a filter screen and a dehumidifier are arranged in sequence below the guide roller.

[0012] Preferably, the packing device is in the shape of a rectangular honeycomb.

[0013] Preferably, the area of ​​the filler device is smaller than the area of ​​the filter screen.

[0014] Preferably, a water outlet pipe is provided at the bottom of the dehumidifier, a drain port is provided on the water outlet pipe, and the number of dehumidifiers and water outlet pipes is at least 3.

[0015] Preferably, a material changing door is provided below the paper exit drying box.

[0016] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0017] 1) The utility model sets air outlets of different lengths. The short air outlets are mainly used to increase the internal temperature of the drying box as a whole, and the long air outlets are mainly used to increase the local temperature of the paper surface. The overall heating and local strengthening are achieved, which further enhances the drying effect;

[0018] 2) The utility model can completely absorb and remove moisture formed in the drying process by sequentially arranging a filler device, a filter screen and a dehumidifier under the guide roller, thereby preventing the guide roller from rusting and improving production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 It is a top view of the filling device of the utility model;

[0021] Among them: 1. Drying box; 2. Paper; 3. Guide roller; 4. Heater; 5. Blower; 6. Air outlet pipe; 61. Paper drying branch pipe; 7. First air outlet; 8. Second air outlet; 9. Third air outlet; 10. Filling device; 11. Material change door; 12. Dehumidifier; 13. Water outlet pipe; 14. Drain outlet; 15. Filter. DETAILED DESCRIPTION

[0022] The present invention will be further explained below in conjunction with specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] like Figure 1-2 As shown, a hot air drying device for barrier paper of the utility model comprises a drying box 1, the drying box 1 comprises a drying device and a dehumidifying device, the dehumidifying device comprises a filling device 10 and a dehumidifier 12, the drying device comprises a heater 4, a blower 5, an air outlet main pipe 6, a paper drying branch pipe 61, a first air outlet 7, a second air outlet 8 and a third air outlet 9, the heater 4 is arranged on the top of the drying box 1, the blower 5 is arranged on one side of the heater 4, the heater 4 is connected with the inside of the drying box 1 through the air outlet pipe 6, the air inlet end of the paper drying branch pipe 61 is connected with the air outlet end of the air outlet main pipe 6, the seven paper drying branch pipes 61 are respectively detachably connected to the air outlet main pipe 6, the structure is simple, and it is convenient to assemble and disassemble and replace, and it is highly convenient to use.

[0024] The distance between the first air outlet 7 and the paper 2 is greater than the distance between the second air outlet 8 and the paper 2, and the distance between the second air outlet 8 and the paper 2 is greater than the distance between the third air outlet 9 and the paper 2. There is a distance of 3 to 5 cm between the third air outlet 9 and the paper 2. The airflows of the first air outlet 7, the second air outlet 8 and the third air outlet 9 are uniformly and vertically sprayed onto the surface of the paper, so as to avoid a large impact of hot air on the surface of the paper 2, which causes uneven drying of the surface of the paper 2.

[0025] The shapes of the first air outlet 7, the second air outlet 8 and the third air outlet 9 are all gradually expanding semi-conical. The number of the first air outlet 7 is 1, and the first air outlet 7 is arranged at the lower middle part of the air outlet main pipe 6. The number of the second air outlet 8 is 2, which are symmetrically arranged on both sides of the first air outlet 7. The number of the third air outlet 9 is 4, and every two third air outlets 9 are arranged at the place where the paper 2 enters and exits the drying box 1.

[0026] A guide roller 3 is arranged below the paper 2. The paper 2 is dried and dehumidified through the transmission effect of the guide roller 3. The guide roller 3 is connected to a motor.

[0027] A packing device 10, a filter screen 15 and a dehumidifier 12 are sequentially arranged below the guide roller 3. A refill door 11 is arranged below the paper 2 exiting the drying box 1. The refill door 11 can be opened to replace the silica gel desiccant in the packing device 10 and clean and replace the filter screen 15. A water outlet pipe 13 is arranged at the bottom of the dehumidifier 12, and a drain port 14 is arranged on the water outlet pipe 13. The number of dehumidifiers 12 and water outlet pipes 13 is at least 3. The packing device 10 is in the shape of a rectangular honeycomb, and a packing is arranged in the honeycomb hole. The packing is a silica gel desiccant, and the area of ​​the packing device 10 is smaller than the area of ​​the filter screen 15.

[0028] A humidity sensor may also be provided on the lower inner wall of the drying box 1 , and the number of the dehumidifiers 12 may be adjusted by the humidity sensor.

[0029] When the device is in use, the paper 2 is dried in the uniform airflow hot air of the third air outlet 9, the second air outlet 8, the first air outlet 7, the second air outlet 8 and the third air outlet 9 in sequence through the transmission action of the guide roller 3. The moisture generated during drying is dried for the first time by the silica gel desiccant in the filling device 10. At the same time, the dehumidifier 12 is turned on to dehumidify to achieve the second drying. The water generated by dehumidification is discharged through the drain port 14 on the water outlet pipe 13.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hot air drying device for barrier paper, comprising a drying box (1) and paper (2), characterized in that: The drying box (1) comprises a drying device and a dehumidifying device arranged inside the drying box (1), the dehumidifying device comprising a filling device (10) and a dehumidifier (12), the drying device comprising a heater (4), an air outlet main pipe (6) and an air outlet for evenly ejecting hot air, and the heater (4) is connected to the interior of the drying box (1) via the air outlet main pipe (6).

2. The hot air drying device for barrier paper according to claim 1, characterized in that: The heater (4) is arranged on the top of the drying box (1), and a blower (5) is arranged on one side of the heater (4).

3. The hot air drying device for barrier paper according to claim 1, characterized in that: The air outlet end of the air outlet main pipe (6) is connected to the air inlet end of the paper drying branch pipe (61), and the air outlet end of the paper drying branch pipe (61) is connected to the air outlet, which includes one first air outlet (7), two second air outlets (8) and four third air outlets (9).

4. The hot air drying device for barrier paper according to claim 3, characterized in that: The first air outlet (7), the second air outlet (8) and the third air outlet (9) are all in the shape of a gradually expanding semi-conical shape; the first air outlet (7) is arranged at the lower middle portion of the main air outlet pipe (6); the second air outlet (8) is symmetrically arranged on both sides of the first air outlet (7); and the third air outlet (9) is arranged at the place where the paper (2) enters and exits the drying box (1).

5. The hot air drying device for barrier paper according to claim 3, characterized in that: The distance between the first air outlet (7) and the paper (2) is greater than the distance between the second air outlet (8) and the paper (2), and the distance between the second air outlet (8) and the paper (2) is greater than the distance between the third air outlet (9) and the paper (2).

6. The hot air drying device for barrier paper according to claim 1, characterized in that: A guide roller (3) is arranged below the paper (2), and a filler device (10), a filter screen (15) and a dehumidifier (12) are arranged in sequence below the guide roller (3).

7. The hot air drying device for barrier paper according to claim 1, characterized in that: The packing device (10) is in the shape of a rectangular honeycomb.

8. The hot air drying device for barrier paper according to claim 6, characterized in that: The area of ​​the filler device (10) is smaller than the area of ​​the filter screen (15).

9. The hot air drying device for barrier paper according to claim 1, characterized in that: A water outlet pipe (13) is provided at the bottom of the dehumidifier (12), and a water outlet (14) is provided on the water outlet pipe (13). The number of dehumidifiers (12) and water outlet pipes (13) is at least three.

10. The hot air drying device for barrier paper according to claim 1, characterized in that: A material replacement door (11) is provided below the paper (2) exiting the drying box (1).

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