A printed paper product moisture-proof drying device

Abstract

This utility model discloses a moisture-proof drying device for printed paper products, belonging to the field of printing auxiliary equipment. It includes a drying chamber, a support component, a temperature and humidity sensing and control component, a sealing door component, and a circulating air drying system. The drying chamber has a double-layer insulation structure and is equipped with air inlet and outlet holes and a pressure relief valve. The support component is multi-layered and includes slide rails, sliders, and brackets. The temperature and humidity component enables intelligent control. The sealing door uses double-layer tempered glass and sealing strips. The circulating air system constructs a closed-loop airflow, reduces heat loss through the insulation structure, reuses hot airflow through circulating air, and intelligent control avoids uneven drying and wetting. It has low energy consumption and can solve the problem of moisture absorption of printed paper products. It is suitable for small and medium-sized printing workshops.

Description

Technical Field

[0001] This utility model relates to the field of printing auxiliary equipment technology, specifically to a moisture-proof and drying device for printed paper products. Background Technology

[0002] In the printing industry, the quality of printed paper products is greatly affected by environmental humidity. If printed paper products are placed in a humid environment, the paper fibers will absorb moisture from the air, causing the paper to soften, lose stiffness, and become prone to wrinkles and deformation. At the same time, ink is difficult to cure completely in a humid environment, which may result in blurred or smudged text, or even adhesion to other items, seriously affecting the appearance and performance of the product. Long-term dampness may also breed mold, causing mildew spots on the paper products and directly leading to product scrapping.

[0003] To address the aforementioned issues, various drying devices for printed paper products have emerged in the prior art. However, after in-depth analysis, the inventors found that these devices exhibit several drawbacks: First, the drying chambers are mostly single-layer structures with poor insulation, resulting in rapid heat loss, high energy consumption, and difficulty in maintaining a stable drying temperature within the chamber, thus hindering drying efficiency. Second, the supporting structures are mostly fixed supports that cannot be removed for use, making it inconvenient for workers to handle paper products. Furthermore, some devices lack breathable designs for their supporting components, leading to insufficient drying at the bottom of the paper products and uneven drying. Third, the design of the circulating air system needs improvement, as uneven airflow distribution and the inability of hot air to cover certain areas are problems. These three aspects can be further improved.

[0004] To address the shortcomings of existing drying devices, this invention proposes a moisture-proof drying device for printed paper products with optimized structure and improved functions. By improving the drying chamber, supporting components, temperature and humidity control, and circulating air system, it achieves efficient, uniform, and intelligent drying results, meeting the actual needs of the printing industry for drying paper products. Utility Model Content

[0005] The core objective of this utility model is to provide a moisture-proof drying device for printed paper products. By optimizing the insulation structure of the drying chamber, designing flexible and adaptable load-bearing components, and building an intelligent temperature and humidity sensing control system and a high-efficiency circulating air drying system, it solves the problems of poor insulation, low adaptability, uneven drying, and lack of intelligent control in existing devices. This enables low-energy consumption, uniform and intelligent drying of printed paper products, ensuring product quality and improving the practicality and economy of the equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A moisture-proof drying device for printed paper products includes a drying chamber, a support component, a temperature and humidity sensing and control component, a sealing door component, and a circulating air drying system. The specific structure and connection relationship of each component are as follows.

[0008] Preferably, the drying chamber, serving as the main support and drying space of the device, adopts a double-layer insulation structure design. The outer layer is a stainless steel shell, which is characterized by high strength, corrosion resistance, and easy cleaning, effectively protecting the internal structure of the chamber and extending the service life of the equipment. The inner layer is a high-temperature resistant ceramic-coated board, which can withstand the high-temperature environment during the drying process, preventing the inner layer board from deforming or releasing harmful substances due to high temperatures. At the same time, the ceramic coating has good smoothness, reducing airflow resistance. A rock wool insulation layer is filled between the two layers. Rock wool has excellent thermal insulation performance, which can significantly reduce the loss of heat from the chamber to the outside, maintain a stable internal temperature, and reduce energy consumption.

[0009] Preferably, the drying chamber has air inlet and outlet vents on its side. These vents help regulate the air pressure balance inside and outside the chamber during operation, preventing excessively high or low air pressure caused by airflow circulation. They also allow for quick adjustment of humidity inside the chamber after the equipment stops, facilitating the handling of paper products. The top of the drying chamber is equipped with a pressure relief valve. When the pressure inside the chamber rises abnormally due to heating or airflow circulation, the valve will automatically open to release pressure, preventing deformation or damage to the chamber due to excessive pressure and ensuring safe operation of the equipment.

[0010] Preferably, the support component is used to place the printed paper products to be dried, and 3-5 layers are arranged at intervals along the vertical direction of the inner wall of the drying chamber. This layer design can maximize the use of the space inside the chamber and increase the drying capacity per batch while ensuring drying efficiency. Each load-bearing component includes two parallel slide rails, which are fixedly installed on the inner wall of the drying chamber. A slider is installed within each slide rail, allowing the rail to slide flexibly along the slider. L-plates are located on both sides of the bottom of the load-bearing component, providing a placement position. The L-plates and sliders are fixedly installed on both sides of the inner wall of the drying chamber. Through the cooperation of the slider and slide rails, the load-bearing component can move in and out of the drying chamber along the slide rails, achieving stable placement and facilitating the handling of paper products. Ventilation holes are evenly distributed on the surface of the load-bearing component, allowing hot air to penetrate the paper products and reach the bottom, preventing uneven drying due to trapped moisture. Edge guards are provided along the edges of the load-bearing component to prevent paper products from slipping during handling or drying, ensuring operational safety and drying stability. A handle made of non-slip rubber is located at the bottom of the load-bearing component, making it easy for operators to grip and slide the component, enhancing operational convenience.

[0011] Preferably, the temperature and humidity sensing control component serves as the intelligent control core of the device, including a controller, a humidity sensor, and a display screen. The display screen, mounted on the control panel outside the drying chamber, is a high-definition LCD screen with excellent visual effects. Operators can intuitively view real-time parameters such as temperature, humidity, and drying time inside the chamber via the display screen, and can also set parameters through the screen. The humidity sensor is installed inside the drying chamber to detect the average humidity inside the chamber. The controller is a PLC controller, electrically connected to the humidity sensor, temperature sensor, heating element, and fan element. The controller can receive the detection data transmitted from the humidity and temperature sensors in real time and control the operation of the heating element and fan element according to a preset program, achieving intelligent regulation.

[0012] Preferably, the sealing door assembly is used to seal the drying chamber, ensuring a stable drying environment inside. The sealing door assembly connects to the front of the drying chamber and adopts a single-door structure. A high-temperature resistant sealing strip is provided at the contact point between the sealing door assembly and the drying chamber, maintaining good elasticity under the temperature conditions during the drying process. This ensures a tight fit between the chamber and the door, effectively preventing the leakage of hot air from inside the chamber and the entry of humid air from the outside, improving insulation and sealing performance. One side of the sealing door assembly is connected to the drying chamber via a hinge made of stainless steel, which is high-strength and wear-resistant, ensuring the door can be opened and closed flexibly. The other side has a door lock with a push-button latch structure, which is easy to operate and allows for quick locking and unlocking of the door, while ensuring the door remains sealed after closing, preventing accidental opening during the drying process.

[0013] Preferably, the circulating air drying system provides a stable hot airflow for the drying process, achieving air circulation within the chamber. It includes a fan assembly, a heating assembly, an air inlet, an air outlet, a return air vent, and an exhaust vent. The heating assembly is installed at the bottom of the drying chamber and includes a heating element and a temperature sensor. The heating element is made of stainless steel and uses electric heating, featuring rapid heating, high thermal efficiency, and corrosion resistance, quickly heating the air inside the chamber to the preset temperature. The temperature sensor is located adjacent to the heating element, allowing real-time monitoring of the heated air temperature and transmitting the data to the controller for temperature regulation. The fan assembly is installed inside the drying chamber on one side, preferably near the air inlet. The fan assembly is a centrifugal fan, characterized by high air pressure and stable airflow, providing sufficient power for airflow circulation. The fan assembly is connected to the air inlet, which is connected to the air outlet via a duct. Air outlets are located corresponding to each layer of supporting components, with each outlet facing the paper products on the surface of the supporting components, ensuring that the hot airflow directly acts on the paper products, improving drying efficiency.

[0014] The air outlet is located at the bottom of the drying chamber, and the return air inlet is located at the top, connecting with the air inlet of the fan assembly to form a complete airflow circulation channel. The fan assembly directly sends part of the hot air heated by the heating element into the drying chamber through the air outlet, while the other part of the hot airflow is sent into the duct from the air distribution inlet, blown towards the paper products through the air distribution outlet, and then flows through the ventilation holes of the paper products and the supporting components. After absorbing moisture from the paper products, the hot airflow flows upward to the return air inlet at the top, and then returns to the air inlet of the fan assembly, completing one airflow cycle. A filter screen is installed at the return air inlet. The filter screen is a 100-mesh stainless steel mesh, which can effectively filter impurities such as paper dust and ink particles in the airflow, preventing impurities from entering the fan assembly and affecting the operation of the equipment, and also preventing impurities from adhering to the surface of the paper products and causing pollution.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] 1. The drying chamber of this utility model adopts a double-layer heat preservation structure, with an outer stainless steel shell and an inner high-temperature resistant ceramic coating plate combined with a rock wool insulation layer, which greatly reduces heat loss, improves heat utilization, and significantly reduces energy consumption; at the same time, the circulating air drying system realizes the recycling of hot airflow, avoids the direct emission of hot airflow, further reduces energy waste, and reduces the operating costs of enterprises while ensuring the drying effect.

[0017] 2. The bearing component in this utility model adopts a slide rail-slider-L-plate structure, which can slide flexibly along the slide rail, making it convenient for staff to pull out the bearing component to pick up and put in paper products, and making it more convenient for staff to pull out and check the drying status of paper products, thus increasing the ease of use of the device.

[0018] 3. In this utility model, the air outlet of the circulating air drying system is set to correspond to each layer of the support component, ensuring that the hot airflow evenly covers all paper products; the vent design of the support component allows the hot airflow to penetrate the paper products, avoiding insufficient drying at the bottom; at the same time, during the airflow circulation process, the hot airflow continuously contacts the paper products, absorbing moisture evenly, effectively solving the problem of "uneven local drying and wetting", ensuring that the drying quality of all paper products is consistent, and avoiding product scrapping due to drying problems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the drying chamber of this application;

[0020] Figure 2 This is a schematic diagram of the carrier component being extracted according to this application;

[0021] Figure 3 This is a schematic diagram of the interior of the drying chamber in this application;

[0022] Figure 4 This is a schematic diagram of the load-bearing components and L-plate of this application;

[0023] Figure 5 It is in this application Figure 4 Enlarged view of point A;

[0024] Figure 6 This is a three-dimensional schematic diagram of this application;

[0025] Figure 7 This is a frontal sectional view of the structure of this application;

[0026] Figure 8 This is a partial cross-sectional structural diagram of the drying chamber of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Drying chamber; 101. Air inlet and outlet; 102. Pressure relief valve; 103. Stainless steel shell; 104. High-temperature resistant ceramic coated plate; 105. Rock wool insulation layer; 2. Load-bearing component; 201. Slide rail; 202. Slider; 203. L-plate; 3. Temperature and humidity sensing control component; 301. Controller; 302. Humidity sensor; 4. Sealing door component; 5. Circulating air drying system; 501. Fan component; 502. Heating component; 5021. Heating tube; 5022. Temperature sensor; 503. Air distribution inlet; 504. Air distribution outlet; 505. Return air outlet; 506. Air outlet. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0029] Reference Figure 1 and Figure 7 This application discloses a moisture-proof drying device for printed paper products, including a drying chamber 1, a support component 2, a temperature and humidity sensing and control component 3, a sealing door component 4, and a circulating air drying system 5.

[0030] Reference Figure 1 and Figure 8The drying chamber 1, serving as the main support and drying space of the device, adopts a double-layer insulation structure design. The outer layer is a stainless steel shell 103, which is characterized by high strength, corrosion resistance, and easy cleaning, effectively protecting the internal structure of the chamber and extending the service life of the equipment. The inner layer is a high-temperature resistant ceramic-coated plate 104, which can withstand the high-temperature environment during the drying process, preventing the inner layer from deforming or releasing harmful substances due to high temperatures. At the same time, the ceramic coating has good smoothness, reducing airflow resistance. The space between the two layers is filled with a rock wool insulation layer 105. Rock wool has excellent thermal insulation properties, which can significantly reduce the heat loss from the chamber to the outside. To prevent external air loss and maintain a stable temperature inside the chamber, reducing energy consumption, the drying chamber 1 has air inlet and outlet holes 101 on its side. These holes help regulate the air pressure balance inside and outside the chamber during operation, preventing excessively high or low air pressure caused by air circulation inside the chamber. They also allow for quick adjustment of humidity inside the chamber after the equipment stops, facilitating the subsequent handling of paper products. The top of the drying chamber 1 is equipped with a pressure relief valve 102. When the pressure inside the chamber rises abnormally due to heating or air circulation, the pressure relief valve 102 will automatically open to release pressure, preventing the chamber from deforming or being damaged due to excessive pressure and ensuring safe operation of the equipment.

[0031] Reference Figure 2 , Figure 3 and Figure 4 The support assembly 2 is used to place the printed paper products to be dried. It is arranged in 3-5 layers along the vertical direction of the inner wall of the drying chamber 1. This layer design maximizes the use of space within the chamber while ensuring drying efficiency, thus increasing the drying capacity per cycle. Each support assembly 2 includes two parallel slide rails 201, which are fixedly installed on the inner wall of the drying chamber 1. A slider 202 is installed inside each slide rail 201, allowing the slide rails 201 to slide flexibly along the slider 202. L-plates 203 are provided on both sides of the bottom of the support assembly 2, providing a placement position for the support assembly 2. The L-plates 203 and the sliders 202 are fixedly installed on both sides of the inner wall of the drying chamber 1. Through the cooperation of the sliders 202 and the slide rails 201, the support assembly 2 can move in and out of the drying chamber 1 along the slide rails 201. The support component 2 is stably placed, making it convenient for operators to pick up and put down paper products. The surface of the support component 2 is evenly covered with ventilation holes, which allow hot air to penetrate the paper products and reach the bottom of the paper products, preventing uneven drying caused by the inability of moisture to drain from the bottom. The edges of the support component 2 are equipped with guards to prevent the paper products from slipping during handling or drying, ensuring operational safety and drying stability. The bottom of the support component 2 is equipped with a handle made of non-slip rubber, which is easy for operators to hold and push the support component 2 to slide, improving operational convenience.

[0032] Reference Figure 1 and Figure 8The temperature and humidity sensing control component 3 serves as the intelligent control core of the device, including a controller 301, a humidity sensor 302, and a display screen. The display screen, mounted on the control panel outside the drying chamber 1, is a high-definition LCD screen with excellent visual effects. Operators can intuitively view real-time parameters such as temperature, humidity, and drying time inside the chamber through the display screen, and can also set parameters via the screen. The humidity sensor 302 is installed inside the drying chamber 1 to detect the average humidity inside the chamber. The controller 301 is a PLC controller, electrically connected to the humidity sensor 302, temperature sensor 5022, heating component 502, and fan component 501. It can receive the detection data transmitted by the humidity sensor 302 and temperature sensor 5022 in real time and control the operation of the heating component 502 and fan component 501 according to a preset program, achieving intelligent regulation.

[0033] Reference Figure 1 and Figure 6 The sealing door assembly 4 is used to seal the drying chamber 1, ensuring a stable drying environment inside the chamber. The sealing door assembly 4 connects to the front of the drying chamber 1 and adopts a single-door structure. A high-temperature resistant sealing strip is provided at the contact point between the sealing door assembly 4 and the drying chamber 1, maintaining good elasticity under the temperature conditions during the drying process. This ensures a tight fit between the chamber and the door, effectively preventing leakage of hot air from inside the chamber and the entry of humid air from the outside, thus improving insulation and sealing performance. One side of the sealing door assembly 4 is connected to the drying chamber 1 via a hinge made of stainless steel, which is high in strength and wear-resistant, ensuring the door can be opened and closed flexibly. The other side is equipped with a door lock, which is a push-button latch structure, easy to operate, and can quickly lock and unlock the door while ensuring the door is sealed after closing, preventing accidental opening during the drying process.

[0034] Reference Figure 8The circulating air drying system 5 provides a stable hot airflow for the drying process, realizing air circulation within the chamber. It includes a fan assembly 501, a heating assembly 502, an air inlet 503, an air outlet 504, a return air inlet 505, and an air outlet 506. The heating assembly 502 is installed at the bottom of the drying chamber 1 and includes a heating tube 5021 and a temperature sensor 5022. The heating tube 5021 is made of stainless steel and uses electric heating, featuring fast heating speed, high thermal efficiency, and corrosion resistance, and can quickly heat the air inside the chamber to the preset temperature. The temperature sensor 5022 is arranged adjacent to the heating tube 5021 and can detect the temperature of the heated air in real time and transmit the data to the controller 301 for temperature control. The fan assembly 501 is installed on one side inside the drying chamber 1, preferably near the air inlet 503. The fan assembly 501 is a centrifugal fan, featuring high air pressure and stable airflow, and can provide sufficient power for airflow circulation. The fan assembly 501 is connected to the air distribution inlet 503, which is connected to the air distribution outlet 504 through a pipe. The air distribution outlet 504 is set for each layer of the support assembly 2, and each air distribution outlet 504 faces the paper products on the surface of the support assembly 2, ensuring that the hot airflow can directly act on the paper products and improve drying efficiency.

[0035] Reference Figure 8 The air outlet 506 is located at the bottom of the drying chamber 1, and the return air outlet 505 is located at the top of the drying chamber 1, connecting with the air inlet of the fan assembly 501 to form a complete airflow circulation channel. The fan assembly 501 sends part of the hot air heated by the heating assembly 502 directly into the drying chamber 1 through the air outlet 506, while the other part of the hot airflow is sent into the pipe from the air distribution inlet 503, blown towards the paper products through the air distribution outlet 504, and the hot airflow passes through the ventilation holes of the paper products and the supporting assembly 2, absorbs the moisture in the paper products, flows upward to the return air outlet 505 at the top, and then returns to the air inlet of the fan assembly 501, completing one airflow cycle. A filter screen is installed at the return air outlet 505. The filter screen is a 100-mesh stainless steel mesh, which can effectively filter impurities such as paper dust and ink particles in the airflow, preventing impurities from entering the fan assembly 501 and affecting the operation of the equipment, while also preventing impurities from adhering to the surface of the paper products and causing pollution.

[0036] This moisture-proof drying device for printed paper products achieves efficient moisture-proof drying of printed paper products through a synergistic mechanism of "heat preservation and storage, intelligent temperature control, circulating air supply, and humidity feedback." The specific working principle is as follows:

[0037] The drying chamber 1 features a double-layer insulation structure: an outer stainless steel shell 103, a rock wool insulation layer 105, and an inner high-temperature resistant ceramic coating plate 104, forming a composite insulation barrier. The rock wool insulation layer 105 utilizes its porous structure to hinder heat conduction, reducing heat loss from the chamber to the outside. The high-temperature resistant ceramic coating plate 104 has a low thermal conductivity, further reducing heat radiation loss. The outer stainless steel shell 103 provides protection and support, preventing damage to the rock wool insulation layer 105. Simultaneously, the silicone rubber sealing strip of the sealing door assembly 4 fits tightly against the door frame of the drying chamber 1 when the door is closed, blocking air exchange between the inside and outside of the chamber, preventing the entry of humid air and leakage of internal hot air, and providing a stable, sealed environment for the drying process. The air inlet and outlet vents 101 on the side of the chamber are only adjusted when the internal air pressure is abnormal; during normal drying, the dust filter blocks impurities without affecting the overall sealing performance.

[0038] The circulating air drying system 5 constructs a closed-loop airflow path of "heating-air supply-moisture absorption-filtration-circulation": After the controller 301 is started, the heating element 5021 of the heating component 502 is energized and heats up, heating the air at the bottom of the drying chamber 1 to a preset temperature, such as 70℃; at the same time, the fan component 501 is started, and part of the air pressurized by the fan is blown directly from the air outlet 506 to the support component 2, while the other part of the air is sent into the air distribution inlet 503; the hot airflow is distributed to the air distribution outlets 504 of each layer through the main pipe and branch pipes, and blown onto the surface of the support component 2; the hot airflow passes through the printed paper products The ventilation holes in the gap and bearing component 2 are in full contact with the paper products, absorbing the moisture in the paper products. The temperature of the hot airflow is higher than that of the paper products, forming a humidity gradient and promoting moisture evaporation. The hot airflow carrying moisture flows upward due to the decrease in density and converges at the return air inlet 505 at the top of the box. The stainless steel filter at the return air inlet 505 filters impurities such as paper dust and ink particles in the airflow, preventing impurities from entering the fan and affecting the equipment life. The filtered airflow is re-inhaled by the fan and participates in the heating and air supply process again, realizing the recycling of hot airflow, greatly improving thermal efficiency and reducing energy consumption.

[0039] The temperature and humidity sensing control component 3 achieves intelligent regulation through the logic of "detection-judgment-execution": the humidity sensor 302 detects the relative humidity inside the drying chamber 1 in real time and converts the detection data into an electrical signal, which is then transmitted to the controller 301; the controller compares the real-time humidity with a preset humidity threshold, such as 45%-55% RH. If the real-time humidity is greater than 55% RH, the controller outputs a signal to start the heating component 502 and the fan component 501, entering the drying mode; if the real-time humidity is less than or equal to 55% RH, the controller controls the heating component 502 to stop heating, and the fan component 501 continues to run for a preset delay time, such as 15 minutes, to ensure that the residual moisture is fully evaporated before stopping.

[0040] In terms of temperature control, the temperature sensor 5022 detects the temperature of the airflow after heating in real time and transmits the data to the controller 301. If the temperature is lower than the preset upper limit, such as 70℃, the controller maintains the heating tube 5021 at full power. If the temperature reaches 70℃, the controller adjusts the power of the heating tube 5021 to 1kW to prevent the paper from becoming brittle due to excessive temperature. If the temperature exceeds the 75℃ over-temperature threshold, the controller immediately cuts off the power to the heating tube 5021, triggers an audible and visual alarm, and keeps only the fan running until the temperature drops to a safe range, ensuring the safety of the equipment and paper products.

[0041] The device's safety protection is achieved through multiple mechanisms: the pressure relief valve 102 on the top of the drying chamber 1 automatically opens to release pressure when the air pressure inside the chamber exceeds 0.15MPa due to heating or airflow circulation, and automatically closes when the air pressure drops to 0.12MPa to prevent the chamber from deforming or bursting due to excessive pressure; the push-button door lock of the sealing door assembly 4 locks the door during the drying process to prevent accidental opening of the door and leakage of hot air; the "emergency stop" button on the control panel can cut off the main power supply and stop the operation of all components in case of equipment failure; the heating tube 5021 of the heating assembly 502 is fixed with an insulating bracket to prevent leakage, and the controller has overcurrent and overload protection functions, automatically cutting off power when the circuit current is abnormal to avoid equipment damage.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0044] Finally: 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.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A moisture-proof drying device for printed paper products, comprising a drying chamber (1), a support assembly (2), a temperature and humidity sensing and control assembly (3), a sealing door assembly (4), and a circulating air drying system (5), characterized in that: The drying chamber (1) adopts a double-layer insulation structure. The outer layer is a stainless steel shell (103), the inner layer is a high-temperature resistant ceramic coating plate (104), and the two layers are filled with a rock wool insulation layer (105). The drying chamber (1) has air inlet and outlet holes (101) on the side and a pressure relief valve (102) on the top. The bearing assembly (2) is arranged in 3-5 layers along the vertical direction of the inner wall of the drying chamber (1). Each layer includes two parallel slide rails (201). A slider (202) is provided in the slide rail (201). L plates (203) are provided on both sides of the bottom of the bearing assembly (2). The L plates (203) and the sliders (202) are fixedly installed on both sides of the inner wall of the drying chamber (1). The circulating air drying system (5) includes a fan assembly (501), a heating assembly (502), an air distribution inlet (503), an air distribution outlet (504), a return air outlet (505), and an air outlet (506).

2. A printed paper product damp-proof drying device according to claim 1, characterized in that: The temperature and humidity sensing control component (3) includes a controller (301), a humidity sensor (302) and a display screen. The display screen is installed on the control panel outside the drying chamber (1), and the humidity sensor (302) is installed inside the drying chamber (1).

3. A printed paper product damp-proof drying device according to claim 2, characterized in that: The controller (301) is electrically connected to the humidity sensor (302), temperature sensor (5022), heating component (502), and fan component (501), respectively.

4. A printed paper product damp-proof drying device according to claim 3, characterized in that: The controller (301) has a preset humidity threshold. When the humidity sensor (302) detects that the humidity inside the drying chamber (1) is higher than the threshold, the controller (301) controls the heating component (502) and the fan component (501) to start. When the humidity is lower than the threshold, the controller (301) controls the heating component (502) to stop heating, and the fan component (501) continues to run for a preset time before stopping.

5. A printed paper product damp-proof drying device according to claim 3, characterized in that: The heating component (502) is installed at the bottom of the drying chamber (1) and includes a heating tube (5021) and a temperature sensor (5022). The heating tube (5021) is made of stainless steel. The fan component (501) is installed inside the drying chamber (1) on one side. The fan component (501) is connected to the air distribution inlet (503). The air distribution inlet (503) is connected to the air distribution outlet (504) through a pipe. The air distribution outlet (504) is set for each layer of the bearing component (2). The air outlet (506) is opened at the bottom of the drying chamber (1). The return air outlet (505) is opened at the top of the drying chamber (1) and connected to the air inlet of the fan component (501). A filter screen is provided at the return air outlet (505).

6. A printed paper product damp-proof drying device according to claim 5, characterized in that: The temperature sensor (5022) is electrically connected to the controller (301). When the temperature inside the drying chamber (1) exceeds the preset value, the controller (301) controls the heating component (502) to reduce its power.

7. A printed paper product damp-proof drying device according to claim 1, characterized in that: The surface of the bearing component (2) is uniformly provided with ventilation holes, the edge is provided with a baffle, and the bottom is provided with a handle.

8. A printed paper product damp-proof drying device according to claim 1, characterized in that: The sealing door assembly (4) is connected to the front of the drying chamber (1). A high-temperature resistant sealing strip is provided at the contact point between the sealing door assembly (4) and the drying chamber (1). One side of the sealing door assembly (4) is connected to the drying chamber (1) via a hinge, and the other side is provided with a door lock.

Images