Corrugated board drying device

Abstract

The utility model relates to a corrugated board drying device which comprises a working table, an advancing cavity is formed in the working table, driving rollers are arranged in the advancing cavity in a bilateral symmetry mode, and a conveying belt is connected between the two driving rollers. A drying box is fixedly arranged on the workbench, a drying cavity is formed in the drying box, and a microwave generator is installed on the upper side of the drying cavity; a discharge pipe and a discharge-in pipe are connected into the drying cavity, an air pump is installed on the discharge-in pipe, and a dehumidification mechanism is arranged between the discharge pipe and the discharge-in pipe; a heat dissipation mechanism is installed on the upper side of the drying box, humid and hot air in a drying cavity is pumped into a dehumidification cavity through a discharge pipe by an air pump, moisture in the humid and hot air is removed, then the humid and hot air becomes dry hot air, the dry hot air enters the drying cavity again to heat corrugated boards, the moisture in the drying cavity is discharged, meanwhile, heat energy loss in the drying process is reduced, and the drying efficiency is improved. And the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated board, in particular to a kind of drying device of corrugated board. BACKGROUND

[0002] Corrugated board is a kind of multilayer adhesive body, at least by one layer of wave core paper and at least two face paper, corrugated board has light weight high-strength, buffering performance is good and the like characteristics, so it is widely used in fragile product, precision instrument and the like product packaging.

[0003] In the production process of corrugated board, wave core paper and face paper are bonded by adhesive, in order to improve the curing speed of adhesive, and ensure firm combination between layers, the bonded corrugated board needs to be dried.

[0004] The existing corrugated board drying equipment is usually heated by microwave to achieve the effect of drying corrugated board, the hot air rich in moisture generated after drying corrugated board needs to be discharged outside the drying equipment to avoid the internal humidity of the drying equipment being too high to dry corrugated board, but the hot air containing moisture discharged will cause heat loss in the drying equipment, which is not conducive to improving the drying efficiency of corrugated board.

[0005] In view of the above problems, we propose a kind of drying device of corrugated board. CONTENT OF UTILITY MODEL

[0006] The utility model proposes a kind of drying device of corrugated board, solve the above problems existing in the use process in prior art.

[0007] The technical scheme of the utility model is realized as follows: a kind of drying device of corrugated board, including workbench, the workbench is opened in travel cavity, the travel cavity is symmetrically provided with transmission roller left and right in, two The transmission roller between the connection has conveying belt;

[0008] The workbench is fixed with drying box, the drying box is opened in drying cavity, the left and right side walls of the drying cavity are opened in respectively entrance and exit, the upper side of the drying cavity is installed with microwave generator, the entrance and the exit are all installed with microwave suppressor;

[0009] The drying cavity is connected with discharge pipe and inlet pipe respectively, the inlet pipe is installed with suction pump, and the discharge pipe and the inlet pipe are provided with dehumidification mechanism between them;

[0010] The upper side of the drying box is installed with heat dissipation mechanism.

[0011] The utility model further provides that: the dehumidification mechanism includes dehumidification box, the dehumidification box is fixedly connected to the rear side of the workbench, and the right side of the dehumidification box is hinged with heat insulation door.

[0012] The dehumidification box has a dehumidification chamber, and solid calcium sulfate is placed in the dehumidification chamber.

[0013] A further feature of this invention is that one end of the discharge pipe is fixedly connected to the upper side wall of the drying chamber, and the other end of the discharge pipe is fixedly connected to the lower side wall of the dehumidification chamber.

[0014] One end of the discharge pipe is fixedly connected to the lower side of the rear wall of the drying chamber, and the other end of the discharge pipe is fixedly connected to the upper side wall of the dehumidification chamber.

[0015] A further feature of this invention is that the heat dissipation mechanism includes a plurality of heat dissipation holes, which are vertically and horizontally opened within the upper side wall of the drying chamber.

[0016] The upper side of the drying oven is provided with a sliding cover, and the drying oven is provided with a drive assembly for driving the cover.

[0017] A further feature of this invention is that the driving assembly includes a lead screw, and mounting plates are symmetrically fixed to the upper side wall of the drying chamber. The lead screw is rotatably connected between the two mounting plates, and the baffle is threadedly connected to the lead screw.

[0018] A motor for driving the lead screw is mounted on the mounting plate on one side.

[0019] A further feature of this invention is that a limiting rod is fixedly connected between the two mounting plates, and the cover plate is slidably connected to the limiting rod.

[0020] A further feature of this invention is that the surface of the drying oven is provided with a heat insulation layer.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] The air pump draws the hot and humid air in the drying chamber to the dehumidification chamber through the exhaust pipe. After the moisture in the hot and humid air is removed, it becomes dry hot air and re-enters the drying chamber to heat the corrugated cardboard. This process reduces heat loss during the drying process and improves drying efficiency while removing moisture from the drying chamber.

[0023] After drying, the baffle no longer blocks the heat dissipation holes, and the heat in the drying chamber is lost through the heat dissipation holes, thereby accelerating the heat dissipation speed in the drying chamber and effectively preventing the equipment in the drying chamber from aging due to long-term exposure to high temperatures. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a top view of the present invention;

[0027] Figure 3 for Figure 2 Sectional view along axis AA;

[0028] Figure 4 for Figure 3 BB-direction sectional view;

[0029] Figure 5 for Figure 1 A schematic diagram of the structure from the C-angle view after removing the masking plate.

[0030] The following are the labeling elements in the diagram: 11. Workbench; 12. Traveling cavity; 13. Drive roller; 14. Conveyor belt; 15. Drying oven; 16. Drying chamber; 17. Inlet; 18. Outlet; 19. Microwave generator; 20. Discharge pipe; 21. Inlet pipe; 22. Dehumidifier; 23. Dehumidifier chamber; 24. Insulation door; 25. Heat dissipation hole; 26. Sheath; 27. Lead screw; 28. Mounting plate; 29. ​​Motor; 30. Limiting rod; 31. Air pump; 32. Microwave suppressor. Detailed Implementation

[0031] The following will refer to the appendix in the embodiments of this utility model. Figures 1-5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example:

[0033] like Figures 1 to 5As shown, a drying device for corrugated cardboard includes a workbench 11, on which a drying chamber 15 is fixed. The surface of the drying chamber 15 is fixed with a heat insulation layer (not shown) to prevent excessive surface temperature and burns to operators. A drying chamber 16 is formed inside the drying chamber 15, with an inlet 17 and an outlet 18 on its left and right side walls, respectively. A traveling chamber 12 is formed inside the workbench 11, with symmetrically arranged drive rollers 13 within the traveling chamber 12. A conveyor belt 14 connects the two drive rollers 13. The operator places the cardboard to be dried... Dry corrugated cardboard is placed on the conveyor belt 14, and the conveyor belt 14 carries the corrugated cardboard through the inlet 17 into the drying chamber 16. A microwave generator 19 is installed on the upper side of the drying chamber 16. The microwave generator 19 heats and dries the corrugated cardboard. After the corrugated cardboard is dried, the conveyor belt 14 carries the corrugated cardboard through the outlet 18 and leaves the drying chamber 16. Furthermore, microwave suppressors 32 are installed at both the inlet 17 and the outlet 18 to prevent microwaves generated by the microwave generator 19 from leaking through the inlet 17 and the outlet 18, thereby avoiding safety accidents.

[0034] It should be noted that the power source of the transmission roller 13 is a technology well known to those skilled in the art, and therefore will not be described in detail in the specification and drawings. Furthermore, the functions to be achieved by the microwave generator 19 and the microwave suppressor 32 in this embodiment are supported by a large number of mature technologies. The essence of this utility model is to optimize and combine the existing hardware machine connection methods for specific application scenarios in order to adapt to the problem of how to dry corrugated cardboard (without changing the internal structure of the microwave generator 19 and the microwave suppressor 32).

[0035] A dehumidification box 22 is installed on the rear side of the workbench 11. A dehumidification chamber 23 is opened inside the dehumidification box 22. An insulated door 24 is hinged to the right side wall of the dehumidification box 22. Solid calcium sulfate (not shown in the figure) for drying hot air is placed in the dehumidification chamber 23. An exhaust pipe 20 is fixedly connected to the upper side wall of the drying chamber 16. One end of the exhaust pipe 20, which is not connected to the drying chamber 16, is fixedly connected to the lower side wall of the dehumidification chamber 23. Furthermore, an inlet pipe 21 is fixedly connected to the lower side of the rear side wall of the drying chamber 16. One end of the inlet pipe 21, which is not connected to the drying chamber 16, is fixedly connected to the upper side wall of the dehumidification chamber 23. An air pump 31 is installed on the inlet pipe 21.

[0036] During the corrugated cardboard drying process, the hot air has a high humidity and therefore a low density. As a result, the hot air carrying moisture will accumulate on the upper side of the drying chamber 16. The air pump 31 draws the moisture-rich hot air from the drying chamber 16 into the dehumidification chamber 23 through the discharge pipe 20. After passing through the solid calcium sulfate, the moisture contained in the hot air will be absorbed by the solid calcium sulfate, thereby achieving the purpose of dehumidifying the hot air. The dry hot air then returns to the drying chamber 16 through the discharge pipe 21. Due to its low density, the hot air will carry moisture away from the corrugated cardboard and accumulate on the upper side of the drying chamber 16 after re-entering the drying chamber 16, thereby reducing heat loss during the drying process and accelerating the drying speed of the corrugated cardboard.

[0037] It should be noted that solid calcium sulfate absorbs moisture to form hydrated calcium sulfate, thus achieving dehumidification. When hydrated calcium sulfate is calcined at a high temperature of 200°C, it loses its water of crystallization and returns to an anhydrous state. Therefore, when the solid calcium sulfate in the dehumidification chamber 23 is saturated with moisture, technicians can open the insulated door 24 and remove the hydrated calcium sulfate. After high-temperature calcination, it can be reused. It should also be noted that the drying temperature in the drying chamber 16 should not exceed 200°C to prevent the calcium sulfate in the dehumidification chamber 23 from dehydrating after absorbing moisture and losing its dehumidification function.

[0038] In addition, a number of heat dissipation holes 25 are provided vertically through the upper side wall of the drying chamber 16. A cover plate 26 for blocking the heat dissipation holes 25 is slidably arranged on the upper side of the drying box 15. A drive assembly for driving the cover plate 26 is installed on the drying box 15. During the drying process, the cover plate 26 completely blocks the heat dissipation holes 25 to ensure that heat is not lost through the heat dissipation holes 25. After the corrugated cardboard is dried, the cover plate 26 moves backward and exposes all the heat dissipation holes 25 to accelerate the heat dissipation speed in the drying chamber 16 and prevent the equipment in the drying chamber 16 from aging due to prolonged exposure to high temperature.

[0039] The specific structure of the drive assembly is as follows: the drive assembly includes a lead screw 27, and mounting plates 28 are symmetrically fixed to the upper side wall of the drying chamber 15. The lead screw 27 is rotatably connected between the two mounting plates 28. A motor 29 for driving the lead screw 27 to rotate is installed on one of the mounting plates 28. The cover plate 26 is threadedly connected to the lead screw 27. When the lead screw 27 rotates, it drives the cover plate 26 to move back and forth. A limit rod 30 is fixedly connected between the two mounting plates 28. The cover plate 26 is slidably connected to the limit rod 30 so that the cover plate 26 can only move horizontally back and forth.

[0040] To further improve the heat dissipation speed of the drying chamber 16, Embodiment 2 is proposed: the upper side of the drying box 15 is provided with multiple sets of heat dissipation holes 25 and the baffle plate 26.

[0041] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drying apparatus for corrugated cardboard, comprising a workbench (11), characterized in that: The workbench (11) has a travel cavity (12) inside, and drive rollers (13) are symmetrically arranged in the travel cavity (12) on the left and right sides. A conveyor belt (14) is connected between the two drive rollers (13). A drying box (15) is fixed on the workbench (11). A drying chamber (16) is opened inside the drying box (15). An inlet (17) and an outlet (18) are opened on the left and right side walls of the drying chamber (16). A microwave generator (19) is installed on the upper side of the drying chamber (16). A microwave suppressor (32) is installed at both the inlet (17) and the outlet (18). The drying chamber (16) is connected to a discharge pipe (20) and a discharge pipe (21). An air pump (31) is installed on the discharge pipe (21). A dehumidification mechanism is provided between the discharge pipe (20) and the discharge pipe (21). A heat dissipation mechanism is installed on the upper side of the drying box (15).

2. The drying apparatus for corrugated cardboard according to claim 1, characterized in that: The dehumidification mechanism includes a dehumidification box (22), which is fixedly connected to the rear side of the workbench (11), and an insulation door (24) is hinged to the right side of the dehumidification box (22). The dehumidification box (22) has a dehumidification chamber (23) inside, and solid calcium sulfate is placed inside the dehumidification chamber (23).

3. The drying apparatus for corrugated cardboard according to claim 2, characterized in that: One end of the discharge pipe (20) is fixedly connected to the upper side wall of the drying chamber (16), and the other end of the discharge pipe (20) is fixedly connected to the lower side wall of the dehumidification chamber (23). One end of the discharge pipe (21) is fixedly connected to the lower side of the rear wall of the drying chamber (16), and the other end of the discharge pipe (21) is fixedly connected to the upper side wall of the dehumidification chamber (23).

4. The drying apparatus for corrugated cardboard according to claim 1, characterized in that: The heat dissipation mechanism includes a plurality of heat dissipation holes (25), which are opened vertically through the upper side wall of the drying chamber (16); The upper side of the drying box (15) is provided with a sliding cover (26), and the drying box (15) is provided with a drive assembly for driving the cover (26).

5. A drying apparatus for corrugated cardboard according to claim 4, characterized in that: The drive assembly includes a lead screw (27), and mounting plates (28) are symmetrically fixed to the upper side wall of the drying box (15). The lead screw (27) is rotatably connected between the two mounting plates (28), and the cover plate (26) is threadedly connected to the lead screw (27). A motor (29) for driving the lead screw (27) is mounted on the mounting plate (28) on one side.

6. A drying apparatus for corrugated cardboard according to claim 5, characterized in that: A limiting rod (30) is fixedly connected between the two mounting plates (28), and the cover plate (26) is slidably connected to the limiting rod (30) back and forth.

7. The drying apparatus for corrugated cardboard according to claim 1, characterized in that: The surface of the drying oven (15) is provided with a heat insulation layer.

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