High-pressure air drying device

Abstract

The utility model discloses a high-pressure air-drying device which comprises an air-drying box, an independent air-drying cavity is arranged in the box, and a mounting cavity is formed between the outer wall of the cavity and the inner wall of the box. One side of the box is provided with a box door and a control panel, and one end is provided with a fan; a cover body of the air channel is located in the installation cavity, one end of the cover body is communicated with the fan and is of a gradually-expanding structure, the middle section is provided with an electric heating wire, the other end is of a gradually-shrinking structure, and an air outlet is formed in the air-drying cavity so that airflow can be evenly dispersed, heated and blown out in a concentrated mode. An exhaust mechanism is arranged at the top of the air-drying cavity. The device uniformly disperses, heats and conveys airflow through a special air duct structure, cooperates with an exhaust mechanism to maintain air pressure and humidity, effectively solves the problems of non-uniform airflow, high noise, non-uniform heating and the like of traditional air drying equipment, improves the air drying efficiency and quality, reduces the noise, can flexibly adapt to the air drying requirements of different articles, and is high in applicability and high in practicability. The method has a good application prospect in the field of article drying treatment.

Description

Technical Field

[0001] This utility model relates to the field of air drying devices, and more specifically, to a high-pressure air drying device. Background Technology

[0002] In the field of air drying equipment, traditional air duct designs are often quite simple, typically involving directly connecting a fan to the drying chamber. The fan's blowing action causes hot air to circulate within the drying chamber to dry the items. However, this traditional design has many drawbacks.

[0003] Due to the lack of effective guidance and control of airflow, the airflow velocity distribution from the fan is uneven, easily creating localized high-speed and low-speed airflow zones upon entering the drying chamber. This not only leads to significant differences in the amount of airflow received by items in different locations within the drying chamber, resulting in inconsistent drying levels and affecting product quality, but also causes considerable noise from the localized high-speed airflow, adversely impacting the working environment.

[0004] How to invent a high-pressure air drying device to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-pressure air drying device, aiming to improve the existing technology's lack of effective guidance and control of airflow. This results in uneven airflow velocity distribution from the fan, easily creating localized high-speed and low-speed airflow zones upon entering the drying chamber. This not only leads to significant differences in the amount of airflow received by items at different locations within the drying chamber, causing inconsistent drying levels and affecting product quality, but also...

[0006] This utility model is implemented as follows: A high-pressure air drying device includes an air drying box, an independent air drying chamber is provided inside the air drying box, an installation cavity is formed between the outer wall of the air drying chamber and the inner wall of the air drying box, a box door is provided at one end of one side surface of the air drying box, a control panel is provided at the other end of one side surface of the air drying box, a fan is fixedly installed on one side surface of the air drying box by a connector, the air outlet of the fan is connected to one end of an air duct, the air duct includes a cover, the cover is located in the installation cavity, one section of the cover is connected to the air outlet of the fan, and the other end of the cover is provided with an exhaust port, the exhaust port is located inside the air drying chamber, the cover has a gradually expanding structure from the end connected to the fan to the middle section, and a gradually narrowing structure from the middle section of the cover to the exhaust port end, a plurality of heating wires are fixedly installed between the top and bottom inner walls of the middle section of the cover, and an exhaust mechanism is provided on the top inner wall of the air drying chamber.

[0007] In a preferred embodiment of this utility model, a shelf is provided inside the drying chamber. The shelf is fixedly connected to one end of a rotating shaft. The rotating shaft is rotatably installed in a through hole opened in the inner wall at the bottom of the drying chamber. A first bevel gear is fixedly sleeved on the other end of the rotating shaft. The first bevel gear meshes with a second bevel gear on one side. The second bevel gear is fixedly sleeved on one end of a transmission shaft. The other end of the transmission shaft is fixedly connected to one end of the output shaft of a drive motor. The drive motor is fixedly installed on the inner wall of one side of the mounting chamber.

[0008] In a preferred embodiment of this utility model, a limiting frame is fixedly installed on the upper surface of the shelf. The limiting frame is a C-shaped cylindrical structure consisting of several vertical rods and C-shaped bent rod components.

[0009] In a preferred embodiment of this utility model, a filter screen is fixedly installed between the inner wall of the end of the cover that is connected to the fan.

[0010] In a preferred embodiment of this utility model, a plurality of evenly distributed mounting shafts are rotatably installed between the inner walls on both sides of the air outlet of the cover. Each mounting shaft is integrally provided with a guide vane. One end of the plurality of mounting shafts located on the same side extends to the outside of the cover through a through hole and is connected to the synchronous adjustment mechanism.

[0011] In a preferred embodiment of this utility model, the synchronous adjustment mechanism includes several gears fixedly sleeved on one end of a corresponding mounting shaft. All the gears are meshed with a rack on one side. The bottom end of the rack is fixedly connected to one end of a cylinder piston rod. The cylinder is fixedly installed on the inner wall of the bottom of the mounting cavity, and its piston rod extends into the drying cavity through a through hole opened in the inner wall of the bottom of the drying cavity.

[0012] In a preferred embodiment of this utility model, the exhaust mechanism includes a four-way exhaust pipe, three exhaust ports are provided on the inner wall of the top of the drying chamber, the ends of the three branch pipe sections of the four-way exhaust pipe are all connected to the corresponding exhaust ports, and the main pipe section of the four-way exhaust pipe is located outside the drying box and is connected to an exhaust valve.

[0013] The beneficial effects of this utility model are as follows: The high-pressure air-drying device obtained through the above design features a gradually expanding structure from the fan connection end to the middle section. This design effectively diffuses and reduces airflow based on fluid mechanics principles. When the airflow enters the gradually expanding section from the high-speed ejection of the fan, the airflow speed gradually decreases while the pressure gradually increases, allowing the airflow to be evenly dispersed within a larger space. This effectively avoids pressure fluctuations and noise caused by excessively fast local airflow. Compared with traditional air ducts, this structure significantly reduces the noise level during equipment operation and improves the comfort of the working environment. Simultaneously, the evenly dispersed airflow ensures that the air can more comprehensively and evenly contact the heating wire during subsequent heating, improving the uniformity of heat transfer and laying a solid foundation for achieving uniform air drying.

[0014] The section from the middle of the enclosure to the exhaust vent features a tapering design. After being heated by the heating wire, the air becomes hot air, and the tapering structure causes the hot air to gradually increase in velocity and decrease in pressure as it passes through. Based on the continuity equation and Bernoulli's equation, this structure allows the hot air to be blown evenly onto the items placed in the drying chamber at a higher speed and appropriate pressure, significantly improving heat transfer efficiency. Compared to traditional simple air ducts, this design allows moisture on the surface of items to evaporate more quickly, greatly shortening drying time and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure provided by the embodiment of this utility model;

[0017] Figure 2 A three-dimensional schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;

[0018] Figure 3 A three-dimensional schematic cross-sectional view of the air duct structure provided for an embodiment of this utility model;

[0019] Figure 4 A three-dimensional schematic diagram of the overall structure of the air duct provided for an embodiment of this utility model.

[0020] In the diagram: 1-Drying box; 2-Fan; 3-Air duct; 101-Drying chamber; 102-Box door; 103-Control panel; 104-Placement platform; 105-Limiting frame; 106-Rotating shaft; 107-First bevel gear; 108-Second bevel gear; 109-Drive shaft; 110-Drive motor; 111-Exhaust pipe four-way pipe; 112-Exhaust valve; 301-Cover; 302-Filter screen; 303-Mounting shaft; 304-Guide vane; 305-Gear; 306-Rack; 307-Cylinder; 308-Heating wire. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, 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 scope of protection of this utility model.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a high-pressure air drying device, including an air drying box 1, an independent air drying chamber 101 inside the air drying box 1, an installation cavity formed between the outer wall of the air drying chamber 101 and the inner wall of the air drying box 1, a box door 102 is provided at one end of one side surface of the air drying box 1, a control panel 103 is provided at the other end of one side surface of the air drying box 1, and a fan 2 is fixedly installed on one side surface of the air drying box 1 by a connector, the air outlet of the fan 2 is connected to one end of an air duct 3, and the air... The channel 3 includes a cover 301, which is located in the installation cavity. One end of the cover 301 is connected to the air outlet of the fan 2, and the other end of the cover 301 is provided with an exhaust port, which is located inside the drying chamber 101. The cover 301 has a gradually expanding structure from the end connected to the fan 2 to the middle section, and a gradually narrowing structure from the middle section of the cover 301 to the exhaust port end. Several heating wires 308 are fixedly installed between the top and bottom inner walls of the middle section of the cover 301, and an exhaust mechanism is provided on the top inner wall of the drying chamber 101.

[0023] Fan 2 acts as a power source, causing airflow. When fan 2 operates, surrounding air is drawn in and accelerated, then enters the drying chamber 101 through duct 3. The special shape design of duct 3 is based on fluid mechanics principles. The gradually expanding structure connecting to the air outlet of fan 2, according to Bernoulli's law, causes the airflow velocity to decrease while the pressure gradually increases, allowing the air to be evenly dispersed in a larger space, reducing pressure fluctuations and noise caused by excessively fast local airflow. The tapering structure from the middle section to the exhaust port causes the airflow velocity to gradually increase and the pressure to decrease as it passes through, according to the continuity equation. This allows hot air to be blown evenly onto the items placed in the drying chamber 101 at a higher speed and appropriate pressure, improving heat transfer efficiency. The heating wire 308 heats up when energized, and according to Joule's law, electrical energy is converted into heat energy, raising the temperature of the passing air and forming hot air, which in turn accelerates the evaporation of moisture from the surface of the items, achieving the purpose of pressure drying. The exhaust system ensures that hot air can circulate continuously and effectively by adjusting the air pressure balance in the drying chamber 101, promoting the continuous evaporation and discharge of moisture.

[0024] Please see Figure 2 A shelf 104 is provided inside the drying chamber 101. The shelf 104 is fixedly connected to one end of the rotating shaft 106. The rotating shaft 106 is rotatably installed in a through hole opened in the inner wall of the bottom of the drying chamber 101. A first bevel gear 107 is fixedly sleeved on the other end of the rotating shaft 106. The first bevel gear 107 is meshed with a second bevel gear 108 on one side. The second bevel gear 108 is fixedly sleeved on one end of the drive shaft 109. The other end of the drive shaft 109 is fixedly connected to one end of the output shaft of the drive motor 110. The drive motor 110 is fixedly installed on the inner wall of one side of the installation cavity.

[0025] The storage platform 104 is securely welded or fixed to one end of the rotating shaft 106 using other reliable connection methods. The rotating shaft 106 is rotatably mounted in a pre-drilled through hole in the bottom inner wall of the drying chamber 101 via high-precision bearings, ensuring flexible rotation and good stability. At the other end of the rotating shaft 106, a first bevel gear 107 is precisely fixedly fitted, ensuring good meshing with a second bevel gear 108 mounted on one end of the drive shaft 109. The meshing clearance is moderate to ensure efficient and smooth power transmission. The other end of the drive shaft 109 is securely connected to the output shaft of the drive motor 110 via a coupling or other suitable connection method. The drive motor 110 is then firmly fixed to the inner wall of one side of the mounting cavity using bolts or other connecting parts. When the drive motor 110 is working, the rotational motion of its output shaft is transmitted to the platform 104 in sequence through the transmission shaft 109, the second bevel gear 108, the first bevel gear 107 and the rotating shaft 106, causing the platform 104 to rotate in a predetermined direction and speed.

[0026] By rotating the shelf 104, all surfaces of the item can be fully exposed to hot air during the drying process, ensuring uniform drying and avoiding inconsistent drying due to partial obstruction or fixed position of the item, thus effectively improving the overall drying quality.

[0027] Dynamic air drying significantly improves the uniformity of drying, reducing quality issues such as deformation and discoloration that may result from uneven drying. Simultaneously, by making fuller use of hot air resources, it also improves drying efficiency, shortens overall drying time, and enhances equipment performance and product quality.

[0028] Furthermore, a limiting frame 105 is fixedly installed on the upper surface of the shelf 104. The limiting frame 105 is a C-shaped cylindrical structure consisting of several vertical rods and C-shaped bent rod components.

[0029] On the upper surface of the shelf 104, a limiting frame 105 is rationally designed and fixedly installed according to the common size and shape of the items. Multiple vertical bars are evenly distributed on the shelf 104, their height determined according to the height requirements of the items, generally slightly higher than the center of gravity of the items, to ensure effective restriction of the vertical movement of the items. C-shaped curved bars wrap around the top of the vertical bars, their bending shape and inner diameter designed according to the outline of the items, maintaining an appropriate gap with the sides of the items, preventing items from slipping while not causing difficulty in placing and retrieving them. The limiting frame 105 is connected to the shelf 104 by welding, riveting, or high-strength bolts to ensure a firm and reliable connection, capable of withstanding various forces generated during the rotation of the items. The gaps between the vertical bars and the curved bars do not affect airflow; in actual use, objects can be connected to the limiting frame using connectors to achieve stable limiting.

[0030] It effectively ensures the stability of items during the drying process, avoids damage to the equipment that may be caused by items falling or shifting, reduces the probability of equipment failure, and improves the safety and reliability of equipment operation.

[0031] Please see Figure 3 and Figure 4 A filter screen 302 is fixedly installed between the inner wall of the hood 301 and the fan 2.

[0032] The filter screen 302 is tightly fixed between the inner wall of the housing 301 and the fan 2 at the connection point. This can be achieved using methods such as slot fixing or frame sealing, ensuring a secure installation and eliminating any air leakage channels. The filter screen 302 can be made of materials with sufficient strength and filtration accuracy, such as stainless steel wire mesh or fiber mesh. Its pore size is determined based on actual needs, generally capable of filtering out particulate impurities with diameters of tens of micrometers or larger. After the equipment has been running for a period of time, when a certain amount of impurities accumulates on the filter screen surface, it can be easily disassembled for cleaning or replacement to ensure consistently good filtration performance.

[0033] The air entering the air duct 3 is pre-filtered to prevent dust, hair, fibers and other impurities from entering the air duct. This prevents these impurities from adhering to components such as the heating wire 308, which would affect normal operation and the heat transfer efficiency of the heating wire. It also prevents impurities from being carried by the hot air and blown onto the items to be dried, thus contaminating the surface of the items and ensuring the normal operation of the equipment and the drying quality of the items.

[0034] Furthermore, several evenly distributed mounting shafts 303 are rotatably installed between the inner walls on both sides of the air outlet of the cover 301. Each mounting shaft 303 is integrally provided with a guide vane 304. One end of several mounting shafts 303 located on the same side extends to the outside of the cover 301 through a through hole and is connected to the synchronous adjustment mechanism.

[0035] Between the inner walls on both sides of the air outlet of the cover 301, several evenly distributed mounting shafts 303 are rotatably mounted via high-precision bearings. Each mounting shaft 303 has an integrally formed guide vane 304, which is generally designed as a curved surface with a certain curvature to better guide airflow. One end of the mounting shaft 303 on the same side extends to the outside through a through hole in the outer wall of the cover 301 and connects to a synchronous adjustment mechanism. Under the action of the synchronous adjustment mechanism, all mounting shafts 303 can rotate simultaneously by the same angle, thereby achieving synchronous adjustment of the angle of the guide vane 304. For example, when it is necessary to concentrate hot air onto the top of an object, the guide vane 304 can be adjusted to an upward tilt angle; when it is necessary to expand the coverage area of ​​the hot air, the angle of the guide vane 304 can be appropriately adjusted to make it more horizontal.

[0036] Based on the varying hot air requirements of items of different shapes, sizes, and materials, the airflow direction and volume at the outlet can be flexibly adjusted. This allows hot air to be more precisely directed to key parts or areas requiring focused drying, improving hot air utilization and drying efficiency, and enhancing the equipment's adaptability and versatility for diverse items. It also improves the equipment's flexibility and operability, enabling rapid adjustments to the hot air supply method based on the characteristics and drying requirements of the actual items, optimizing the drying process, improving drying efficiency and quality, and reducing energy waste and excessively long drying times caused by inadequate hot air supply.

[0037] Furthermore, the synchronous adjustment mechanism includes several gears 305 fixedly sleeved on one end of the corresponding mounting shaft 303. All gears 305 are meshed with a rack 306 on one side. The bottom end of the rack 306 is fixedly connected to one end of the piston rod of the cylinder 307. The cylinder 307 is fixedly installed on the inner wall of the bottom of the mounting cavity, and its piston rod extends into the interior of the drying cavity 101 through a through hole opened in the inner wall of the bottom of the drying cavity 101.

[0038] Multiple gears 305 are tightly and securely fitted onto one end of their respective mounting shafts 303, and all gears 305 maintain good meshing with the rack 306 on the same side, achieving high meshing accuracy and minimal clearance. The bottom end of the rack 306 is reliably connected to one end of the piston rod of the cylinder 307 via welding, threaded connection, or other reliable methods. The cylinder 307 is securely mounted on the inner wall of the bottom of the mounting cavity using bolts or other connecting parts. Its piston rod extends into the drying cavity 101 through a through hole in the inner wall of the bottom of the drying cavity 101, ensuring no interference with other components during movement. During equipment operation, when the angle of the guide vane 304 needs to be adjusted, the control system sends a command to the cylinder 307 to control its intake or exhaust, causing the piston rod to extend or retract, moving the rack 306, which in turn rotates the gears 305, ultimately achieving angle adjustment of the mounting shaft 303 and the guide vane 304.

[0039] The angle of the guide vanes 304 is precisely and stably controlled, enabling automated and synchronized adjustment of the hot air flow direction and flow rate at the outlet. An external control system (such as a PLC controller) can easily control the movement of the cylinders 307, accurately adjusting the angle of the guide vanes 304 according to preset programs or operator instructions to meet different drying process requirements. This improves the automation level and adjustment accuracy of the equipment, reducing errors and labor intensity associated with manual adjustments. It allows for rapid response to different drying needs, improving equipment efficiency and production flexibility, facilitating large-scale, high-efficiency drying operations, and enhancing the overall intelligence level of the production process and product quality stability.

[0040] Please see Figure 1 and Figure 2 The exhaust mechanism includes an exhaust pipe four-way pipe 111. Three exhaust ports are provided on the inner wall of the top of the drying chamber 101. The ends of the three branch pipe sections of the exhaust pipe four-way pipe 111 are connected to the corresponding exhaust ports. The main pipe section of the exhaust pipe four-way pipe 111 is located outside the drying box 1 and is connected to an exhaust valve 112.

[0041] Three exhaust ports are opened on the top inner wall of the drying chamber 101 according to a certain layout and design requirements. The ends of the three branch pipe sections of the exhaust pipe four-way pipe 111 are precisely connected to the corresponding exhaust ports through sealed connections (such as rubber sealing rings, flange connections, etc.) to ensure that there is no gas leakage at the connection points. The main pipe section of the exhaust pipe four-way pipe 111 extends to the outside of the drying box 1, and an exhaust valve 112 is installed on the main pipe section. The exhaust valve 112 can be selected from different types such as solenoid valves and manual regulating valves, depending on the degree of automation and control requirements of the equipment. During the operation of the equipment, the opening degree of the exhaust valve 112 is adjusted by the control system or manual operation according to factors such as the type, quantity, and initial moisture content of the items to achieve the best air pressure and humidity regulation effect.

[0042] The environmental parameters inside the drying chamber 101 have been optimized, improving the hot air circulation efficiency and drying effect, and shortening the drying time of items. This allows for better adaptation to the drying needs of different items, enhances the equipment's versatility and reliability, reduces fluctuations in drying quality caused by unstable environmental factors, and helps improve overall product quality and production efficiency.

[0043] Working principle: After the fan 2 is started, it draws in and accelerates the outside air. The air first passes through the filter 302 installed between the inner wall of the enclosure 301 and the end connecting the fan 2. The filter removes dust, impurities and other particles from the air, keeping the air entering the air duct 3 clean.

[0044] Air entering the air duct 3 flows along the enclosure 301. The gradually expanding structure of the enclosure 301 from the connection end of the fan 2 to the middle section initially diffuses and reduces the pressure of the airflow, evenly distributing the airflow and reducing noise. In the middle section of the enclosure 301, the air flows through several heating wires 308 fixedly installed between the top and bottom inner walls. The heating wires generate heat when energized, converting electrical energy into heat energy according to Joule's law, thus heating the air into hot air. Subsequently, the hot air passes through the gradually narrowing structure from the middle section of the enclosure 301 to the exhaust port, where the flow velocity increases and is concentrated and blown into the interior of the drying chamber 101.

[0045] Inside the drying chamber 101, items placed on the shelf 104 are surrounded by hot air. The shelf 104 is fixedly connected to one end of a rotating shaft 106, which is rotatably mounted in a through hole in the bottom inner wall of the drying chamber 101. At the other end of the shaft, a first bevel gear 107 meshes with a second bevel gear 108. The second bevel gear 108 is fixed to one end of a drive shaft 109, which is connected to the output shaft of a drive motor 110. When the drive motor 110 operates, it drives the rotating shaft 106 to rotate via the bevel gear transmission, thereby causing the shelf 104 to rotate. During rotation, the items are in full contact with the hot air, achieving uniform heating and drying, and avoiding uneven drying in certain areas.

[0046] Meanwhile, the guide vanes 304 on several mounting shafts 303 rotatably mounted between the inner walls on both sides of the air outlet of the cover 301 can adjust the direction and flow rate of hot air. One end of the mounting shaft 303 is connected to a synchronous adjustment mechanism, which consists of a gear 305 fixedly sleeved on one end of the mounting shaft 303, a rack 306 meshing with the gear 305, and a cylinder 307 connected to the bottom end of the rack 306. The extension and retraction of the cylinder 307 drives the rack 306 to move, and the rack 306 causes the gear 305 to rotate, thereby realizing the synchronous angle adjustment of all mounting shafts 303 and guide vanes 304, and the hot air supply can be flexibly adjusted according to the shape, size and other requirements of different items.

[0047] The exhaust mechanism on the top inner wall of the drying chamber 101 works in conjunction with the exhaust valve 112 via an exhaust pipe four-way pipe 111. The three branch sections of the exhaust pipe four-way pipe 111 are connected to three exhaust ports on the top inner wall of the drying chamber 101. By controlling the opening and closing degree and size of the exhaust valve 112, the air pressure and humidity inside the drying chamber 101 are adjusted according to the principle of gas flow. When the exhaust valve 112 opening increases, the gas discharge speed inside the chamber accelerates, the air pressure decreases, and hot air circulation is promoted; when the opening decreases, the gas discharge decreases, and the air pressure inside the chamber relatively increases, which helps maintain the residence time and temperature of hot air inside the chamber, promotes the evaporation of moisture from the items, and simultaneously removes water vapor in a timely manner, maintaining a suitable humidity environment inside the chamber and preventing a large amount of external impurities from entering.

[0048] It should be noted that the specific models and specifications of the drive motor 110, fan 2, cylinder 307 and heating wire 308 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0049] The power supply and operating principle of the drive motor 110, fan 2, cylinder 307 and heating wire 308 are clear to those skilled in the art and will not be described in detail here.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure air drying device, characterized in that, The device includes a drying box with an independent drying chamber inside. An installation cavity is formed between the outer wall of the drying chamber and the inner wall of the drying box. A door is located at one end of one side surface of the drying box, and a control panel is located at the other end of the same side surface. A fan is fixedly installed on one end surface of the drying box via a connector. The fan outlet is connected to one end of an air duct. The air duct includes a cover located within the installation cavity. One section of the cover is connected to the fan outlet, and the other end of the cover has an exhaust port located inside the drying chamber. The cover has a gradually expanding structure from the fan connection point to the middle section, and a gradually narrowing structure from the middle section to the exhaust port. Several heating wires are fixedly installed between the top and bottom inner walls of the middle section of the cover. An exhaust mechanism is provided on the top inner wall of the drying chamber.

2. The high-pressure air drying device as described in claim 1, characterized in that: The drying chamber is equipped with a platform, which is fixedly connected to one end of a rotating shaft. The rotating shaft is rotatably installed in a through hole opened in the inner wall at the bottom of the drying chamber. A first bevel gear is fixedly sleeved on the other end of the rotating shaft. The first bevel gear meshes with a second bevel gear on one side. The second bevel gear is fixedly sleeved on one end of a drive shaft. The other end of the drive shaft is fixedly connected to one end of the output shaft of a drive motor. The drive motor is fixedly installed on the inner wall of one side of the installation chamber.

3. The high-pressure air drying device as described in claim 2, characterized in that: A limiting frame is fixedly installed on the upper surface of the shelf. The limiting frame is a C-shaped cylindrical structure consisting of several vertical rods and C-shaped bent rod components.

4. The high-pressure air drying device as described in claim 1, characterized in that: A filter screen is fixedly installed between the inner wall of the hood and the fan.

5. The high-pressure air drying device as described in claim 1, characterized in that: Several evenly distributed mounting shafts are rotatably installed between the inner walls on both sides of the air outlet of the cover. Each mounting shaft is integrally provided with a guide vane. One end of the mounting shafts located on the same side extends to the outside of the cover through a through hole and is connected to the synchronous adjustment mechanism.

6. The high-pressure air drying device as described in claim 5, characterized in that: The synchronous adjustment mechanism includes several gears fixedly sleeved on one end of the corresponding mounting shaft. All the gears are meshed with a rack on one side. The bottom end of the rack is fixedly connected to one end of the cylinder piston rod. The cylinder is fixedly installed on the inner wall of the bottom of the mounting cavity. Its piston rod extends into the drying cavity through a through hole opened in the inner wall of the bottom of the drying cavity.

7. The high-pressure air drying device as described in claim 1, characterized in that: The exhaust mechanism includes a four-way exhaust pipe. Three exhaust ports are provided on the inner wall of the top of the drying chamber. The ends of the three branch pipe sections of the four-way exhaust pipe are all connected to the corresponding exhaust ports. The main pipe section of the four-way exhaust pipe is located outside the drying box and is connected to an exhaust valve.

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