A cardboard box drying device

Abstract

This utility model discloses a cardboard box drying device, relating to the field of cardboard box processing technology, aiming to facilitate individual drying of cardboard boxes and improve the drying effect. The core structure comprises a drying chamber and a communicating heating chamber. Secondary conveying devices are installed at the bottom of the heating chamber and inside the drying chamber, with multiple secondary conveying devices arranged in a V-shape within the drying chamber. Cardboard boxes can enter the heating chamber individually and be independently conveyed through the conveying devices. Compared to traditional devices where densely stacked cardboard boxes prevent hot airflow from penetrating the center, the V-shaped staggered arrangement of the secondary conveying devices provides each cardboard box with independent and sufficient airflow space, allowing hot airflow to fully cover the surface and interior of each box. This avoids over-drying of the outer layers of cardboard boxes while moisture remains trapped in the center, ensuring uniform drying of all boxes, significantly improving the drying quality of the cardboard boxes, and guaranteeing their structural strength and moisture-proof performance.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box processing technology, and in particular to a cardboard box drying device. Background Technology

[0002] In the rapid development of the modern packaging industry, cardboard boxes have become an indispensable packaging medium in various commodity circulation processes due to their advantages such as low cost, environmentally friendly materials, and strong adaptability. Whether for the protection of industrial products during transportation or the packaging needs of special fields such as food and pharmaceuticals, the dryness of cardboard boxes plays a crucial role. Dry cardboard boxes ensure sufficient structural strength, preventing deformation and damage during stacking and handling, while effectively isolating external moisture and ensuring the quality and safety of the goods inside.

[0003] Currently, traditional drying equipment is commonly used in the cardboard box drying process. To maximize space utilization and increase throughput, these devices typically feed the cartons into the drying chamber in a densely stacked or tightly packed arrangement. In practice, the gaps between the cartons are extremely small, sometimes even with edges touching, leaving almost no space for airflow. This compact arrangement leads to uneven drying. During the drying process, hot airflow struggles to penetrate the densely stacked cartons, mostly flowing along the inner walls of the drying unit and the surface of the outer cartons, failing to effectively reach the cartons in the middle of the stack. As a result, the outer cartons receive ample contact with the hot airflow and, after a period of drying, generally meet the drying requirements; however, the cartons sandwiched in the middle remain in a relatively enclosed environment, making it difficult for moisture to dissipate.

[0004] Therefore, it is necessary to design a cardboard box drying device to facilitate the individual drying of cardboard boxes and improve the drying effect. Utility Model Content

[0005] To address the above shortcomings, this utility model provides a cardboard box drying device that can dry cardboard boxes individually, thereby improving the drying effect of cardboard boxes in the drying device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cardboard box drying device includes a housing, a second conveying device disposed inside the housing, a drying chamber, a heating chamber communicating with the upper side of the drying chamber, a second conveying device disposed at the bottom of the heating chamber, and multiple second conveying devices disposed inside the drying chamber, the multiple second conveying devices in the drying chamber being arranged in a V-shape staggered from top to bottom; The second transmission device includes a mounting plate, a second transmission roller, a second conveyor belt, and a second motor. The mounting plate has a mounting hole in the middle. There are two second transmission rollers, which are rotatably mounted on both sides of the mounting hole in the mounting plate. The two second transmission rollers extend out from both sides and are rotatably mounted on the housing. The second conveyor belt is mounted on the two second transmission rollers. The second motor is mounted on the housing and connected to one of the two transmission rollers. It should be noted that the second conveyor belt is a perforated conveyor belt, which increases friction and facilitates the circulation of hot air in the drying chamber.

[0007] The cartons enter the heating chamber individually, are heated inside the heating chamber, and are then conveyed into the drying chamber by a second conveyor at the bottom of the heating chamber. Several second conveyors in the drying chamber transport the cartons downwards in sequence, drying them while simultaneously cooling them from top to bottom to prevent the cartons from becoming damp.

[0008] Preferably, the drying chamber also includes a hot air blower, and a mounting hole is provided at the top of the drying chamber, into which the hot air blower is installed. The hot air blown from top to bottom into the drying chamber by the hot air blower increases the drying speed.

[0009] Preferably, a heating wire is provided at the upper part of the heating chamber for heating the cardboard box.

[0010] Preferably, the housing is further provided with a cooling chamber, which is located at the bottom of the drying chamber on the side opposite to the heating chamber and is connected to it. A first transmission device is provided in the cooling chamber. The first transmission device includes a first drive roller, a first conveyor belt and a first motor. There are two first drive rollers and they are rotatably installed in the cooling chamber. The first conveyor belt is installed on the two first drive rollers. The first motor is installed on the outside of the cooling chamber and connected to one of the two first drive rollers.

[0011] Preferably, it also includes a cooling fan, which rotates in the upper part of the cooling chamber. This further cools the cardboard box while simultaneously ejecting it from the drying chamber.

[0012] Preferably, multiple exhaust vents are also provided on both sides of the cooling chamber to accelerate cooling efficiency.

[0013] Preferably, it also includes an exhaust fan, and a mounting hole is provided at the bottom of the drying chamber near the heating chamber, with the exhaust fan installed in the mounting hole. This removes the hot and humid air from the drying chamber, preventing it from affecting the cardboard box and causing it to become damp.

[0014] Preferably, the device also includes a temperature sensor, which is installed inside the drying chamber, located behind the exhaust fan. The operating speed of the device is adjusted based on the data from the temperature sensor. Furthermore, a humidity sensor should also be included, with the temperature and humidity sensors working together to display the environment inside the drying chamber.

[0015] Preferably, the device also includes a central controller, which is electrically connected to the first motor, the second motor, a temperature sensor, a humidity sensor, a heating wire, a hot air blower, a cooling fan, and an exhaust fan. The central controller can control the overall start and stop of the device, control the operation of a single second motor or multiple second motors to work together to transfer the cardboard box out of the drying chamber, and change the operating status of each component based on the values ​​of the temperature and humidity sensors.

[0016] Preferably, the second conveying device located at the bottom of the drying chamber has its opening facing the cooling chamber. This facilitates the output of the dried cardboard boxes.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. The core structure comprises a drying chamber and a communicating heating chamber. Secondary conveying devices are installed at the bottom of the heating chamber and within the drying chamber, with multiple secondary conveying devices arranged in a staggered V-shape within the drying chamber. Cartons can enter the heating chamber individually and be transported independently via these devices. Compared to traditional devices where densely stacked cartons prevent hot airflow from penetrating the center, the staggered V-shaped secondary conveying devices provide each carton with independent and ample airflow space. Combined with the perforated conveyor belt design within the secondary conveying devices (enhancing hot air circulation), this allows hot airflow to fully cover the surface and interior of each carton, preventing over-drying of the outer cartons while moisture remains trapped in the center. This ensures uniform drying of all cartons, significantly improving drying quality and guaranteeing structural strength and moisture resistance.

[0018] 2. The device preheats the cartons using heating wires at the top of the heating chamber, shortening the subsequent drying time. The combined operation of the hot air blower and exhaust fan within the drying chamber (the hot air blower inputs hot air to accelerate drying, and the exhaust fan promptly removes hot and humid air) further enhances drying efficiency. After drying, the cartons are initially cooled as they are naturally conveyed downwards by a V-shaped second conveyor system before entering a cooling chamber connected to the drying chamber. There, the cooling fan and exhaust vents work together to rapidly lower the temperature. The entire process eliminates the need for manual carton transfer, enabling continuous operation, significantly reducing production downtime, and improving overall processing efficiency. Furthermore, the "immediate cooling after drying" design prevents the cartons from becoming damp due to contact with external moisture at high temperatures, further ensuring the stability of the drying effect.

[0019] 3. Temperature sensors in the device monitor the environment inside the drying chamber in real time. The central controller automatically adjusts the working status of each component based on sensor data (combined with humidity monitoring). For example, it adjusts the residence time of cartons in the drying chamber by adjusting the speed of the second motor, adapts the power of the hot air blower and the heating intensity of the heating wire to cartons with different humidity levels by adjusting the power of the hot air blower and the heating intensity of the heating wire, and balances drying efficiency and energy consumption by controlling the speed of the exhaust fan and cooling fan. This intelligent control mode can accurately match drying parameters for cartons of different materials and with different initial humidity levels, ensuring that the drying effect meets the standards, while avoiding energy waste caused by fixed parameters. This improves the applicability of the equipment while reducing production energy consumption and costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure from the opposite side view of this utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a cross-sectional view of the present invention; Reference numerals: 1. Housing; 101. Heating chamber; 102. Drying chamber; 103. Cooling chamber; 104. Exhaust vent; 2. Hot air blower; 3. First transmission device; 301. First drive roller; 302. First conveyor belt; 303. First motor; 4. Cooling fan; 5. Second transmission device; 501. Mounting plate; 502. Second drive roller; 503. Second conveyor belt; 504. Second motor; 6. Heating wire; 7. Exhaust fan; 8. Temperature sensor; 9. Central controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figures 1-4 As shown, the carton drying device of this utility model mainly includes a shell 1, a second transmission device 5, a hot air blower 2, an electric heating wire 6, a first transmission device 3, a cooling fan 4, an exhaust fan 7, a temperature sensor 8, and a central controller 9.

[0026] The housing 1 is the main structure of the entire device, which includes a drying chamber 102, a heating chamber 101, and a cooling chamber 103. The heating chamber 101 is located on the upper side of the drying chamber 102 and communicates with the drying chamber 102. The cooling chamber 103 is located at the bottom of the drying chamber 102 on the side opposite to the heating chamber 101 and communicates with it.

[0027] The second conveying device 5 includes a mounting plate 501, second drive rollers 502, a second conveyor belt 503, and a second motor 504. The mounting plate 501 has a mounting hole in its center. Two second drive rollers 502 are rotatably mounted on both sides of the mounting hole within the mounting plate 501, and both sides of the two second drive rollers 502 extend out and are rotatably mounted on the housing 1. The second conveyor belt 503 is fitted onto the two second drive rollers 502. The second motor 504 is mounted on the housing 1 and connected to one of the two drive rollers. The second conveyor belt 503 is a perforated conveyor belt. This increases friction, ensuring the cartons do not slip during transport, and facilitates the flow of hot air within the drying chamber 102, allowing the hot air to better contact the cartons and improve the drying effect. A second conveying device 5 is provided at the bottom of the heating chamber 101 to send the carton from the heating chamber 101 into the drying chamber 102. Multiple second conveying devices 5 are provided in the drying chamber 102. The multiple second conveying devices 5 in the drying chamber 102 are arranged in a V-shape from top to bottom. This arrangement allows the carton to have more space to contact the hot air in the drying chamber 102, and also prolongs the residence time of the carton in the drying chamber 102, thereby improving the drying effect.

[0028] The hot air blower 2 is installed in the mounting hole at the top of the drying chamber 102. By blowing hot air into the drying chamber 102 from top to bottom, the drying speed can be increased, allowing the cartons to reach the drying requirements more quickly. The heating chamber 101 is equipped with an electric heating wire 6 at the top. The electric heating wire 6 is used to heat the cartons, preheating them before they enter the drying chamber 102, which can improve drying efficiency.

[0029] A first conveying device 3 is installed inside the cooling chamber 103. The first conveying device 3 includes a first drive roller 301, a first conveyor belt 302, and a first motor 303. Two first drive rollers 301 are rotatably mounted inside the cooling chamber 103, and the first conveyor belt 302 is fitted onto the two first drive rollers. The first motor 303 is mounted outside the cooling chamber 103 and connected to one of the two first drive rollers 301. The second conveying device 5, located at the bottom of the drying chamber 102, opens towards the cooling chamber 103 to facilitate the output of dried cartons into the cooling chamber 103.

[0030] A cooling fan 4 is installed on the upper part of the cooling chamber 103, which can blow cold air into it to further cool the carton. Multiple exhaust vents 104 are also provided on both sides of the cooling chamber 103. These exhaust vents 104 can accelerate the cooling efficiency, allowing the carton to cool down faster and preventing the carton from getting damp.

[0031] An installation hole is provided at the bottom of the drying chamber 102 near the heating chamber 101. An exhaust fan 7 is installed in the installation hole to exhaust the hot and humid air in the drying chamber 102 and prevent the hot and humid air from affecting the carton and causing it to become damp.

[0032] Temperature sensor 8 is installed inside drying chamber 102, located behind exhaust fan 7, and can monitor the temperature inside drying chamber 102 in real time. Central controller 9 is electrically connected to the first motor 303, second motor 504, temperature sensor 8, heating wire 6, hot air blower 2, cooling fan 4, and exhaust fan 7. Central controller 9 can control the overall start and stop of the device. When drying cartons needs to begin, central controller 9 can simultaneously start the first motor 303, second motor 504, heating wire 6, hot air blower 2, and other components. Central controller 9 can also control a single second motor 504 or multiple second motors 504 working together to transfer cartons from drying chamber 102 (for example, to prevent damage to cartons during top-to-bottom transfer on mounting plate 501, central controller 9 can control the second motors 504 of the upper and lower layers to rotate in the same direction; simultaneously, to prevent transmission interference, each level...). The second transmission device 5 (transmits cartons separately) adjusts its operating speed according to the drying status of the cartons and production needs. In addition, the central controller 9 can also change the working state of each component according to the values ​​of the temperature sensor 8 and the humidity sensor. For example, when the temperature sensor 8 detects that the temperature in the drying chamber 102 is too low, the central controller 9 can increase the power of the hot air blower 2 or increase the heating power of the heating wire 6. When the humidity sensor detects that the humidity in the drying chamber 102 is too high, the central controller 9 can increase the speed of the exhaust fan 7 to expel the hot and humid air more quickly.

[0033] Through the cooperation of the above components, the cardboard box drying device of this utility model can dry the cardboard boxes individually, improve the drying effect of the cardboard boxes in the drying device, and ensure the dryness of the cardboard boxes, thereby meeting the needs of various commodity packaging. It should be emphasized that this device is usually used indoors. If it is used outdoors, waterproof and dustproof covers need to be installed on the exhaust fan 7 and cooling fan 4.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cardboard box drying device, comprising a housing (1), characterized in that: The housing (1) is provided with a second transmission device (5). The housing (1) includes a drying chamber (102). A heating chamber (101) is provided on the upper side of the drying chamber (102) and communicates with it. The second transmission device (5) is provided at the bottom of the heating chamber (101). Multiple second transmission devices (5) are provided in the drying chamber (102). The multiple second transmission devices (5) in the drying chamber (102) are arranged in a V-shape staggered from top to bottom. The second transmission device (5) includes a mounting plate (501), a second transmission roller (502), a second conveyor belt (503), and a second motor (504). The mounting plate (501) has a mounting hole in the middle. There are two second transmission rollers (502) which are rotatably mounted on both sides of the mounting hole in the mounting plate (501). The two second transmission rollers (502) extend out from both sides and are rotatably mounted on the housing (1). The second conveyor belt (503) is mounted on the two second transmission rollers (502). The second motor (504) is mounted on the housing (1) and connected to one of the two transmission rollers.

2. The cardboard box drying device according to claim 1, characterized in that: It also includes a hot air blower (2), and the top of the drying chamber (102) is provided with an installation hole, and the hot air blower (2) is installed in the installation hole at the top of the drying chamber (102).

3. The cardboard box drying device according to claim 1, characterized in that: The upper part of the heating chamber (101) is provided with a heating wire (6).

4. The cardboard box drying device according to claim 1, characterized in that: The housing (1) is also provided with a cooling chamber (103). The cooling chamber (103) is located at the bottom of the drying chamber (102) on the side opposite to the heating chamber (101) and is connected to it. A first transmission device (3) is provided in the cooling chamber (103). The first transmission device (3) includes a first transmission roller (301), a first conveyor belt (302) and a first motor (303). There are two first transmission rollers (301) and they are rotatably installed in the cooling chamber (103). The first conveyor belt (302) is installed on the two first transmission rollers (301). The first motor (303) is installed on the outside of the cooling chamber (103) and connected to one of the two first transmission rollers (301).

5. A cardboard box drying device according to claim 4, characterized in that: It also includes a cooling fan (4), which rotates on the upper part of the cooling chamber (103).

6. A cardboard box drying device according to claim 4, characterized in that: Multiple exhaust vents (104) are also provided on both sides of the cooling chamber (103).

7. A cardboard box drying device according to claim 4, characterized in that: It also includes an exhaust fan (7), and the bottom of the drying chamber (102) near the heating chamber (101) has an installation hole, and the exhaust fan (7) is installed in the installation hole.

8. A cardboard box drying device according to claim 7, characterized in that: It also includes a temperature sensor, which is installed inside the drying chamber (102) and located behind the exhaust fan (7).

9. A cardboard box drying device according to claim 8, characterized in that: It also includes a central controller (9), which is electrically connected to the first motor (303), the second motor (504), the temperature sensor (8), the heating wire (6), the hot air blower (2), the cooling fan (4) and the exhaust fan (7).

10. A carton drying device according to claim 4, characterized in that: The second transmission device (5), located at the bottom of the drying chamber (102), has its opening facing the cooling chamber (103).

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