Drying apparatus

Abstract

This application relates to a drying apparatus. The drying apparatus includes a first drying mechanism, a second drying mechanism, an air duct, and an intake fan. The first drying mechanism includes a first drying chamber and a natural gas combustion assembly. The second drying mechanism includes a second drying chamber, a hydrogen fuel cell assembly, and a heating assembly. One end of the air duct is connected to the exhaust port of the first drying chamber, and the other end of the air duct is connected to the air inlet of the second drying chamber. The intake fan is mounted on the air duct and is used to draw gas from the first drying chamber to the second drying chamber. The drying apparatus of this application combines natural gas combustion heating and hydrogen fuel cell-powered electric heating, enabling it to switch freely between low-temperature and high-temperature baking scenarios according to actual baking needs, meeting the requirements of various industrial baking processes, and improving the adaptability and utilization rate of the drying apparatus.

Description

Technical Field

[0001] This application relates to the field of drying technology, and more particularly to a drying apparatus. Background Technology

[0002] Baking production lines, as a crucial link in industrial production, are widely used in various fields. Examples include: paint baking in manufacturing, pharmaceutical drying, drying and curing in the printing industry, sand and slurry drying in the construction industry, and heating in low-temperature environments (mine shafts, warehouses, workshops, etc.). Currently, the main heating methods used in baking production lines include: electric heating, biomass combustion heating, and natural gas combustion heating.

[0003] Among these methods, electric heating obtains heat by connecting electric heating elements to mains electricity. While electric heating offers high heating efficiency and good control precision, making it suitable for high-temperature baking scenarios (typically between 100℃ and 250℃), the high price of mains electricity leads to persistently high overall operating costs over the long term. Biomass combustion heating provides heat by burning biomass (such as wood and straw). The resulting flue gas is not very clean and requires additional filtration and treatment equipment. Furthermore, biomass-fired stoves require chimneys to discharge smoke and exhaust gases, resulting in poor equipment mobility and demanding site requirements, which limits the application of biomass combustion heating in high-temperature baking scenarios. Natural gas combustion provides heat by burning natural gas. In high-temperature baking scenarios, more natural gas is needed to maintain the high temperature, increasing fuel consumption and leading to higher operating costs. Utility Model Content

[0004] This application provides a drying device that solves the problems of high cost of electric heating, low cleanliness of flue gas from burning biomass and high site requirements, making it unsuitable for high-temperature baking scenarios, and high cost of burning natural gas for high-temperature baking scenarios.

[0005] To achieve the above objectives, this application provides a drying apparatus, comprising: a first drying mechanism, which includes: a first drying chamber and a natural gas combustion assembly, the natural gas combustion assembly being disposed outside the first drying chamber and connected to the first drying chamber; a second drying mechanism, which includes: a second drying chamber, a hydrogen fuel cell assembly and a heating assembly, the hydrogen fuel cell assembly being disposed outside the second drying chamber and the heating assembly being disposed inside the second drying chamber and electrically connected to the hydrogen fuel cell assembly; an air duct, one end of which is connected to the exhaust port of the first drying chamber and the other end of which is connected to the air inlet of the second drying chamber; and an air intake fan, disposed on the air duct and used to draw gas from the first drying chamber to the second drying chamber.

[0006] In some embodiments, the drying apparatus further includes a transfer mechanism, which includes a transfer conveyor belt disposed between the first drying chamber and the second drying chamber.

[0007] In some embodiments, the transfer mechanism further includes: a heat-insulating element disposed under the transfer conveyor belt and used to heat the material on the transfer conveyor belt.

[0008] In some embodiments, the natural gas combustion assembly includes: a combustion chamber having an air inlet, a natural gas inlet, and a gas outlet, the air inlet being connected to an air source and the gas outlet being connected to a first drying chamber; and a natural gas tank being connected to the natural gas inlet.

[0009] In some embodiments, the first drying mechanism further includes an electrically adjustable window disposed on the side wall of the first drying chamber and connected to the air outlet.

[0010] In some embodiments, the hydrogen fuel cell assembly includes: a hydrogen fuel cell; a power device electrically connected to the hydrogen fuel cell; and an electrical controller electrically connected between the power device and the heating element.

[0011] In some embodiments, the hydrogen fuel cell assembly further includes a battery monitoring module, which includes a signal generator, a signal processing module, a monitoring probe, a monitoring module, a communication port, and a host computer. The signal generator receives voltage and current signals from the hydrogen fuel cell and converts them into pulse width modulation signals, which are then transmitted to the signal processing module. The signal processing module is connected to a power device to adjust the output voltage and output current of the power device. The monitoring probe acquires monitoring data from the hydrogen fuel cell and feeds it back to the monitoring module. The monitoring module feeds the monitoring data back to the signal processing module. The signal processing module outputs the monitoring data to the communication port. The communication port communicates with the host computer to transmit the monitoring data to the host computer.

[0012] In some embodiments, the monitoring module includes at least one of an impact monitoring module, a voltage monitoring module, a capacity monitoring module, and a temperature monitoring module.

[0013] In some embodiments, the heating assembly includes: a heating element disposed in the second drying chamber and electrically connected to the hydrogen fuel cell; and a heat storage element disposed in the second drying chamber and at least partially covering the heating element.

[0014] In some embodiments, the first drying mechanism further includes: a first fan disposed on the top wall of the first drying chamber; the second drying mechanism further includes: a second fan disposed on the top wall of the second drying chamber.

[0015] The first drying mechanism of the drying apparatus of this application utilizes a natural gas combustion assembly to provide heat to the first drying chamber. Natural gas, as a highly efficient fuel, can quickly and stably convert chemical energy into thermal energy, ensuring energy efficiency in the low-temperature baking process. This makes the first drying mechanism suitable for low-temperature baking scenarios between 50°C and 100°C. In low-temperature baking scenarios, the thermal efficiency of natural gas combustion is high, effectively converting fuel into the required heat, thereby reducing fuel costs, improving energy utilization, and lowering the operating costs of the first drying mechanism.

[0016] The second drying mechanism of the drying device in this application uses a heating element electrically connected to a hydrogen fuel cell assembly to provide heat to the second drying chamber. As a clean and efficient energy conversion method, the hydrogen fuel cell can provide a stable heat source in high-temperature baking scenarios and significantly reduce power consumption, making the second drying mechanism suitable for high-temperature baking scenarios with temperatures ranging from 100°C to 250°C. Compared with heating using mains electricity, the hydrogen fuel cell has a higher energy conversion efficiency and a lower unit power cost, which can effectively reduce the operating cost of the second drying mechanism.

[0017] The drying device of this application includes a first drying mechanism and a second drying mechanism. The drying device combines a natural gas combustion heating method and a hydrogen fuel cell power supply electric heating method, and can freely switch between low temperature baking scenarios and high temperature baking scenarios according to actual baking needs. This flexibility not only meets the requirements of various industrial baking processes, but also improves the adaptability and utilization rate of the drying device.

[0018] This application provides an air duct between the first drying chamber and the second drying chamber, and an air inlet seal is provided on the air duct. When the material enters the second drying chamber, the air inlet fan can be turned on as needed to draw the hot gas in the first drying chamber into the second drying chamber, thereby increasing the temperature in the second drying chamber. This can save hydrogen energy consumption and reduce costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a side view of the drying apparatus provided in the embodiments of this application;

[0022] Figure 2 This is a side view of the first drying mechanism of the drying apparatus provided in the embodiments of this application;

[0023] Figure 3 This is a top view of the drying apparatus provided in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram showing the connection of the electric adjustment window, the first temperature monitoring component, and the first time monitoring component of the drying device provided in this application embodiment;

[0025] Figure 5 This is a side view of the second drying mechanism of the drying apparatus provided in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the hydrogen fuel cell assembly of the second drying mechanism of the drying device provided in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram showing the connection of the heating element, electrical controller, second temperature monitoring element, and second time monitoring element of the drying device provided in this application embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Drying device; 1. First drying mechanism; 2. Second drying mechanism; 3. Inlet fan; 4. Air duct; 5. Transfer mechanism; 6. Loading mechanism; 7. Unloading mechanism;

[0030] 11. First drying chamber; 12. Natural gas combustion assembly; 13. Electric adjustable window; 14. First temperature monitoring assembly; 15. First time monitoring assembly; 16. First fan; 121. Combustion chamber; 122. Natural gas tank; 1211. Air inlet; 1212. Natural gas inlet; 1213. Gas outlet; 141. First temperature sensor; 142. First control unit; 151. First timer; 152. Second control unit;

[0031] 21. Second drying chamber; 22. Hydrogen fuel cell assembly; 23. Heating component; 24. Battery monitoring module; 25. Second temperature monitoring component; 26. Second time monitoring component; 27. Second fan; 211. Exhaust port; 221. Hydrogen fuel cell; 222. Power device; 223. Electronic controller; 231. Heating element; 232. Heat storage element; 241. Signal generator; 242. Signal processing module; 243. Monitoring probe; 244. Monitoring module; 245. Communication port; 246. Host computer; 2441. Impact monitoring module; 2442. Voltage monitoring module; 2443. Capacity monitoring module; 2444. Temperature monitoring module; 2431. Impact monitoring probe; 2432. Voltage monitoring probe; 2433. Capacity monitoring probe; 2434. Temperature monitoring probe; 251. Second temperature sensor; 252. Third control unit; 261. Second timer; 262. Fourth control unit;

[0032] 51. Transfer conveyor belt; 52. Insulation element; 61. Loading platform; 62. Loading conveyor belt; 71. Unloading platform; 72. Unloading conveyor belt. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] Please see Figure 1 This application provides a drying apparatus 100. The drying apparatus 100 includes: a first drying mechanism 1 and a second drying mechanism 2.

[0035] Please see Figure 2 The first drying mechanism 1 includes a first drying chamber 11 and a natural gas combustion assembly 12. The first drying chamber 11 can accumulate heat from the hot air entering from the natural gas combustion assembly 12 to dry the material entering the first drying chamber 11 and allow the material to leave the first drying chamber 11 after drying. The natural gas combustion assembly 12 is disposed outside the first drying chamber 11 and connected to the first drying chamber 11.

[0036] Please refer to the following: Figure 2 and Figure 3The natural gas combustion assembly 12 includes a combustion chamber 121 and a natural gas tank 122. The combustion chamber 121 has an air inlet 1211, a natural gas inlet 1212, and a gas outlet 1213. The air inlet 1211 is connected to an air source to allow air to enter the combustion chamber 121; the natural gas tank 122 is connected to the natural gas inlet 1212 to allow natural gas from the natural gas tank 122 to enter the combustion chamber 121. The air provides the oxygen required for natural gas combustion, and the air and natural gas burn together in the combustion chamber 121 to generate hot air. The gas outlet 1213 is connected to a first drying chamber 11 to allow the hot air from the combustion chamber 121 to enter the first drying chamber 11.

[0037] Please see Figure 2 The first drying mechanism 1 further includes an electrically adjustable window 13. The electrically adjustable window 13 is disposed on the side wall of the first drying chamber 11 and connected to the air outlet 1213. That is, hot air from the combustion chamber 121 enters the first drying chamber 11 through the air outlet 1213 and the electrically adjustable window 13. When material enters the first drying chamber 11, the opening angle of the electrically adjustable window 13 increases, increasing the amount of hot air entering the first drying chamber 11 from the combustion chamber 121, thereby effectively increasing the temperature inside the first drying chamber 11 and thus drying the material.

[0038] Please refer to the following: Figure 2 and Figure 4 The first drying mechanism 1 further includes a first temperature monitoring component 14. The first temperature monitoring component 14 is disposed on the side wall inside the first drying chamber 11. The first temperature monitoring component 14 includes a first temperature sensor 141 and a first control unit 142. The first temperature sensor 141 is used to sense the temperature inside the first drying chamber 11. When the temperature inside the first drying chamber 11 reaches the preset temperature, the first control unit 142 reduces the opening angle of the electric adjustment window 13, decreasing the amount of hot air transferred from the combustion chamber 121 to the first drying chamber 11. At this time, the combustion chamber 121 retains heat, reducing heat loss and achieving the purpose of saving natural gas and reducing fuel consumption. Conversely, when the temperature inside the first drying chamber 11 is lower than the preset temperature, the first control unit 142 increases the opening angle of the electric adjustment window 13, increasing the amount of hot air transferred from the combustion chamber 121 to the first drying chamber 11. The electric adjustment window 13 can adjust its opening angle according to the real-time feedback data from the first temperature sensor 141. This precise temperature control capability ensures temperature stability during the drying process, prevents material damage due to overheating, and guarantees efficient drying results. In this embodiment, the drying temperature in the first drying chamber 11 can be controlled between 50°C and 100°C by means of the electric adjustment window 13 to suit low-temperature baking scenarios.

[0039] Please see Figure 2 and Figure 4The first drying mechanism 1 further includes a first time monitoring component 15. The first time monitoring component 15 is disposed on the side wall inside the first drying chamber 11. The first time monitoring component 15 includes a first timer 151 and a second control unit 152. When the first temperature sensor 141 senses that the temperature inside the first drying chamber 11 has reached the preset temperature, the first temperature sensor 141 transmits a command to the first timer 151 to start timing. When the material has reached the preset drying time in the first drying chamber 11, the second control unit 152 reduces the opening angle of the electric adjustment window 13, thereby reducing the amount of hot air transferred from the combustion chamber 121 to the first drying chamber 11. At this time, the combustion chamber 121 retains heat, reduces heat loss, and achieves the purpose of saving natural gas and reducing fuel consumption.

[0040] Taking sand drying as an example, the preset drying temperature of the sand in the first drying chamber 11 is 100℃, and the pre-drying time is 30 minutes. After the sand enters the first drying chamber 11, the electric regulating window 13 is opened to increase its opening angle, allowing the combustion chamber 121 to begin transferring heat to the first drying chamber 11. When the first temperature sensor 141 detects that the temperature inside the first drying chamber 11 has reached 100℃, the first control unit 142 reduces the opening angle of the electric regulating window 13, decreasing the amount of hot air transferred from the combustion chamber 121 to the first drying chamber 11. Simultaneously, the first temperature sensor 141 sends a command to the first timer 151, causing the first timer 151 to start timing. After the first timer 151 has timed for 30 minutes, the second control unit 152 reduces the opening angle of the electric regulating window 13, further reducing the amount of hot air transferred from the combustion chamber 121 to the first drying chamber 11, thereby maximizing the saving of natural gas consumption.

[0041] Please see Figure 2 The first drying mechanism 1 further includes a first fan 16. The first fan 16 is disposed on the top wall inside the first drying chamber 11. By accelerating the circulation of hot air in the first drying chamber 11 through the first fan 16, it helps to evenly distribute the hot air throughout the entire first drying chamber 11, ensuring that the temperature in each area is consistent, accelerating the drying speed of the material, and improving the drying efficiency.

[0042] The first drying mechanism 1 of the drying apparatus 100 of this application uses a natural gas combustion assembly 12 to provide heat to the first drying chamber 11. Natural gas, as a highly efficient fuel, can quickly and stably convert chemical energy into thermal energy, ensuring energy efficiency in the low-temperature baking process. This makes the first drying mechanism 1 suitable for low-temperature baking scenarios between 50°C and 100°C. In low-temperature baking scenarios, natural gas combustion has high thermal efficiency, effectively converting fuel into the required heat, thereby reducing fuel costs, improving energy utilization, and lowering the operating costs of the first drying mechanism 1.

[0043] Please refer to the following: Figure 5 and Figure 6 The second drying mechanism 2 includes a second drying chamber 21, a hydrogen fuel cell assembly 22, and a heating element 23. The second drying chamber 21 can store the heat emitted by the heating element 23 to dry the material entering the second drying chamber 21, and allow the material to leave the second drying chamber 21 after drying. The hydrogen fuel cell assembly 22 is disposed outside the second drying chamber 21.

[0044] The hydrogen fuel cell assembly 22 includes a hydrogen fuel cell 221, a power device 222, and an electrical controller 223. The hydrogen fuel cell 221 powers the heating element 23. The hydrogen fuel cell 221 can be flexibly selected from proton exchange membrane cells, alkaline fuel cells, or solid oxide fuel cells to meet specific application requirements. Multiple hydrogen fuel cells 221 are connected in series and parallel to store a certain amount of direct current (DC). The power device 222 is electrically connected to the hydrogen fuel cell 221. In this embodiment, the power device 222 is an inverter that converts the DC power output from the hydrogen fuel cell 221 into alternating current (AC), ensuring the electrical controller 223 functions properly and maintaining the stability and efficiency of the equipment. The electrical controller 223 is electrically connected between the power device 222 and the heating element 23. The electrical controller 223 can dynamically manage and allocate AC power according to the equipment's needs, optimizing power usage and improving the overall efficiency of the system.

[0045] Please see Figure 6 The hydrogen fuel cell assembly 22 also includes a battery monitoring module 24. The battery monitoring module 24 includes a signal generator 241, a signal processing module 242, a monitoring probe 243, a monitoring module 244, a communication port 245, and a host computer 246. The signal generator 241 receives the voltage and current signals from the hydrogen fuel cell 221 and converts them into pulse-width modulated signals, which are then transmitted to the signal processing module 242. The signal processing module 242 is connected to the power device 222 to adjust the output voltage and current of the power device 222, achieving precise control of the power of the heating component 23. This ensures the stability of the temperature in the second drying chamber 21 and avoids product quality problems caused by temperature fluctuations. By precisely controlling the power output of the heating component 23, the system can flexibly adjust the temperature of the second drying chamber 21 according to actual needs. This on-demand heating method avoids energy waste and improves overall energy efficiency.

[0046] The monitoring probe 243 acquires monitoring data from the hydrogen fuel cell 221 and feeds it back to the monitoring module 244. The monitoring module 244 then feeds the monitoring data back to the signal processing module 242, which outputs the monitoring data to the communication port 245. The communication port 245 communicates with the host computer 246 to transmit the monitoring data. Thus, the overall status of the hydrogen fuel cell 221 can be monitored and assessed in real time using the monitoring data output by the host computer 246. This allows for the timely detection of potential safety hazards, such as hydrogen leakage or abnormal temperature, thereby preventing accidents and ensuring the safety of equipment and personnel.

[0047] In some embodiments, the monitoring module 244 includes at least one of the following: an impact monitoring module 2441, a voltage monitoring module 2442, a capacity monitoring module 2443, and a temperature monitoring module 2444.

[0048] In this embodiment, the monitoring module 244 includes an impact monitoring module 2441, a voltage monitoring module 2442, a capacity monitoring module 2443, and a temperature monitoring module 2444. Correspondingly, the monitoring probes 243 include an impact monitoring probe 2431, a voltage monitoring probe 2432, a capacity monitoring probe 2433, and a temperature monitoring probe 2434.

[0049] The impact monitoring probe 2431 is used to acquire the impact acceleration data of the hydrogen fuel cell 221 and feed it back to the impact monitoring module 2441. The impact monitoring module 2441 feeds back the impact acceleration data to the signal processing module 242. The signal processing module 242 outputs the impact acceleration data to the communication port 245. The communication port 245 communicates with the host computer 246 to transmit the impact acceleration data to the host computer 246.

[0050] The voltage monitoring probe 2432 is used to acquire the voltage data of the hydrogen fuel cell 221 and feed it back to the voltage monitoring module 2442. The voltage monitoring module 2442 feeds the voltage data back to the signal processing module 242. The signal processing module 242 outputs the voltage data to the communication port 245. The communication port 245 communicates with the host computer 246 to transmit the voltage data to the host computer 246.

[0051] The capacity monitoring probe 2433 is used to acquire the capacity data of the hydrogen fuel cell 221 and feed it back to the capacity monitoring module 2443. The capacity monitoring module 2443 feeds the capacity data back to the signal processing module 242. The signal processing module 242 outputs the capacity data to the communication port 245. The communication port 245 communicates with the host computer 246 to transmit the capacity data to the host computer 246.

[0052] Temperature monitoring probe 2434 is used to acquire temperature data of hydrogen fuel cell 221 and feed it back to temperature monitoring module 2444. Temperature monitoring module 2444 feeds the temperature data back to signal processing module 242, and signal processing module 242 outputs the temperature data to communication port 245. Communication port 245 communicates with host computer 246 to transmit the temperature data to host computer 246. In this way, the impact monitoring module 2441, voltage monitoring module 2442, capacity monitoring module 2443, and temperature monitoring module 2444 can successively solve problems such as electromotive force fluctuation, high temperature overheating, vibration damage, leakage, and power depletion that may occur in hydrogen fuel cell 221, so as to ensure the safe and stable operation of the equipment.

[0053] The heating element 23 is disposed within the second drying chamber 21 and electrically connected to the hydrogen fuel cell assembly 22. The heating element 23 includes a heating element 231 and a heat storage element 232. The heating element 231 is disposed within the second drying chamber 21 and electrically connected to the hydrogen fuel cell 221. The heat storage element 232 is disposed within the second drying chamber 21 and at least partially covers the heating element 231. In this embodiment, the heating element 231 is a resistance wire. The heat storage element 232 is a calcium silicate heat storage block. Multiple calcium silicate heat storage blocks are arranged in layers within the second drying chamber 21. The hydrogen fuel cell 221 supplies power to the heating element 231, causing the heating element 231 to release heat. The heat storage element 232 increases the heat exchange area between the heating element 231 and the gas within the second drying chamber 21, uniformly and slowly releasing the heat from the heating element 231, thereby uniformly drying the material within the second drying chamber 21.

[0054] Please refer to the following: Figure 5 and Figure 7 The second drying mechanism 2 further includes a second temperature monitoring component 25. The second temperature monitoring component 25 is disposed on the side wall inside the second drying chamber 21. The second temperature monitoring component 25 includes a second temperature sensor 251 and a third control unit 252. The second temperature sensor 251 is used to sense the temperature inside the second drying chamber 21. When the temperature inside the second drying chamber 21 reaches a preset temperature, the third control unit 252 reduces the output power of the electric controller 223 to decrease the heat emitted by the heating element 23. Conversely, when the temperature inside the second drying chamber 21 is lower than the preset temperature, the third control unit 252 increases the output power of the electric controller 223 to increase the heat emitted by the heating element 23. The electric controller 223 can adjust its output power according to the real-time feedback data from the second temperature sensor 251. This precise temperature control capability ensures temperature stability during the drying process, prevents material damage due to overheating, and guarantees efficient drying results. In this embodiment, the electric controller 223 can control the drying temperature inside the second drying chamber 21 between 100℃ and 250℃ to suit high-temperature baking scenarios.

[0055] Please refer to the following: Figure 5 and Figure 7 The second drying mechanism 2 further includes a second time monitoring component 26. The second time monitoring component 26 is disposed on the side wall inside the second drying chamber 21. The second time monitoring component 26 includes a second timer 261 and a fourth control unit 262. When the second temperature sensor 251 senses that the temperature inside the second drying chamber 21 has reached a preset temperature, the second temperature sensor 251 sends a command to the second timer 261 to start timing. When the material has reached the preset drying time inside the second drying chamber 21, the fourth control unit 262 further reduces the output power of the electric controller 223, or even adjusts the output power to 0, reducing the heat emitted by the heating component 23 or even stopping heating altogether.

[0056] Taking sand drying as an example, the preset drying temperature of the sand in the second drying chamber 21 is 200℃, and the pre-drying time is 90 minutes. After the sand enters the second drying chamber 21, the electric controller 223 controls the heating element 231 to start heating. When the second temperature sensor 251 senses that the temperature in the second drying chamber 21 has reached 200℃, the electric controller 223 reduces the output power to reduce the heat emitted by the heating element 23, so that the temperature in the second drying chamber 21 remains constant at 200℃. At the same time, the second temperature sensor 251 sends a command to the second timer 261 to start timing. After the second timer 261 has timed for 90 minutes, the fourth control unit 262 controls the electric controller 223 to reduce the output power to reduce the heat emitted by the heating element 23.

[0057] Please see Figure 5 The second drying mechanism 2 also includes a second fan 27. The second fan 27 is installed on the top wall inside the second drying chamber 21. By accelerating the circulation of hot air in the second drying chamber 21 through the second fan 27, it helps to evenly distribute the hot air throughout the entire second drying chamber 21, ensuring a consistent temperature in each area, accelerating the drying speed of the material, and improving drying efficiency.

[0058] Please see Figure 5 The second drying chamber 21 has an exhaust port 211, which is located at the end of the second drying chamber 21 away from the first drying chamber 11. Under the condition of the high-pressure preset temperature in the baking temperature in the second drying chamber 21, the exhaust port 211 can be opened as needed to dissipate heat to the outside of the second drying chamber 21, thereby reducing the temperature inside the second drying chamber 21 in a timely manner.

[0059] The second drying mechanism 2 of the drying device 100 of this application is electrically connected to the hydrogen fuel cell assembly 22 via the heating element 23 to provide heat to the second drying chamber 21. The hydrogen fuel cell 221, as a clean and efficient energy conversion method, can provide a stable heat source in high-temperature baking scenarios and significantly reduce power consumption, making the second drying mechanism 2 suitable for high-temperature baking scenarios with temperatures ranging from 100°C to 250°C. Compared with heating using mains electricity, the hydrogen fuel cell 221 has a higher energy conversion efficiency and a lower unit power cost, which can effectively reduce the operating cost of the second drying mechanism 2.

[0060] For example, considering the cost of hydrogen energy (green hydrogen costs between RMB 21.06 / kg and RMB 46.28 / kg; blue hydrogen costs approximately RMB 20 / kg; and gray hydrogen costs between RMB 13 / kg and RMB 22 / kg), a comprehensive calculation shows that hydrogen fuel cell 221 electric heating has a cost advantage for high-temperature baking scenarios. With advancements in hydrogen production and storage technologies and increased production capacity, the price of hydrogen is expected to further decrease. Furthermore, some enterprise users in certain regions can enjoy local policy subsidies when using hydrogen energy; therefore, the drying device 100 of this application will have an even more significant advantage in terms of energy cost.

[0061] The drying device 100 of this application includes a first drying mechanism 1 and a second drying mechanism 2. The drying device 100 combines a natural gas combustion heating method and an electric heating method powered by a hydrogen fuel cell 221. It can freely switch between low-temperature baking scenarios and high-temperature baking scenarios according to actual baking needs. This flexibility not only meets the requirements of various industrial baking processes, but also improves the adaptability and utilization rate of the drying device 100.

[0062] Please refer to the following: Figure 1 and Figure 3 In some embodiments, the drying apparatus 100 further includes an intake fan 3 and an air duct 4. One end of the air duct 4 is connected to the exhaust port 211 of the first drying chamber 11, and the other end of the air duct 4 is connected to the air inlet of the second drying chamber 21. The intake fan 3 is disposed on the air duct 4 and is used to draw gas from the first drying chamber 11 into the second drying chamber 21. When material enters the second drying chamber 21, the intake fan 3 can be turned on as needed to draw the heated gas from the first drying chamber 11 into the second drying chamber 21, thereby increasing the temperature inside the second drying chamber 21, saving hydrogen energy consumption, and reducing costs. When the material has completed the drying process in the second drying chamber 21, the intake fan 3 is turned off to stop drawing the heated gas from the first drying chamber 11. In this embodiment, the intake fan 3 is disposed at one end of the air duct 4 near the second drying chamber 21. In other embodiments, the intake fan 3 can also be disposed at one end of the air duct 4 near the first drying chamber 11; it can also be disposed in the middle of the air duct 4.

[0063] Please refer to the following: Figure 1 and Figure 3 In some embodiments, the drying apparatus 100 further includes a transfer mechanism 5. The transfer mechanism 5 includes a transfer conveyor belt 51. The transfer conveyor belt 51 is disposed between the first drying chamber 11 and the second drying chamber 21. After the material completes the drying process in the first drying chamber 11, the transfer conveyor belt 51 is used to transfer the material to the second drying chamber 21 for further drying.

[0064] Please refer to the following: Figure 1 and Figure 3 In some embodiments, the transfer mechanism 5 further includes a heat-insulating element 52. The heat-insulating element 52 is disposed below the transfer conveyor belt 51 and is used to keep the material on the transfer conveyor belt 51 warm. In this embodiment, the heat-insulating element 52 is an electric heating element, which releases heat after being energized to keep the material on the transfer conveyor belt 51 warm.

[0065] Please refer to the following: Figure 1 and Figure 3 In some embodiments, the drying apparatus 100 further includes a loading mechanism 6 and a unloading mechanism 7.

[0066] The loading mechanism 6 is located at the end of the first drying chamber 11 away from the second drying chamber 21. The loading mechanism 6 includes a loading platform 61 and a loading conveyor belt 62. The material is placed on the loading platform 61 by an operator or a robotic arm, and then the loading conveyor belt 62 transports the material to the first drying chamber 11 for pre-drying.

[0067] The unloading mechanism 7 is located at the end of the second drying chamber 21 away from the first drying chamber 11. The unloading mechanism 7 includes an unloading platform 71 and an unloading conveyor belt 72. The unloading conveyor belt 72 transports the material to the unloading platform 71, and the material is removed from the unloading platform 71 by an operator or a robotic arm.

[0068] This application, by setting up a transfer mechanism 5, a loading mechanism 6, and a unloading mechanism 7, allows materials to be transported between the loading platform 61, the first drying chamber 11, the second drying chamber 21, and the unloading platform 71. Operators only need to work on the loading platform 61 and the unloading platform 71, without needing to approach the high-temperature first drying chamber 11 and the second drying chamber 21, thus improving the convenience and comfort for production personnel.

[0069] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0071] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A drying apparatus (100), characterized in that, include: A first drying mechanism (1) includes a first drying chamber (11) and a natural gas combustion assembly (12), wherein the natural gas combustion assembly (12) is disposed outside the first drying chamber (11) and connected to the first drying chamber (11); The second drying mechanism (2) includes: a second drying chamber (21), a hydrogen fuel cell assembly (22) and a heating assembly (23), wherein the hydrogen fuel cell assembly (22) is disposed outside the second drying chamber (21) and the heating assembly (23) is disposed inside the second drying chamber (21) and electrically connected to the hydrogen fuel cell assembly (22); An air duct (4), one end of which is connected to the exhaust port (211) of the first drying chamber (11), and the other end of which is connected to the air inlet of the second drying chamber (21); and An air intake fan (3) is installed on the air duct (4) and is used to draw gas from the first drying chamber (11) into the second drying chamber (21).

2. The drying apparatus (100) according to claim 1, characterized in that, The drying device (100) further includes: The transfer mechanism (5) includes a transfer conveyor belt (51) disposed between the first drying chamber (11) and the second drying chamber (21).

3. The drying apparatus (100) according to claim 2, characterized in that, The transfer mechanism (5) also includes: The heat preservation element (52) is disposed under the transfer conveyor belt (51) and is used to keep the material on the transfer conveyor belt (51) warm.

4. The drying apparatus (100) according to claim 1, characterized in that, The natural gas combustion assembly (12) includes: A combustion chamber (121) having an air inlet (1211), a natural gas inlet (1212), and an outlet (1213), the air inlet (1211) being connected to an air source, and the outlet (1213) being connected to the first drying chamber (11); and A natural gas tank (122) is connected to the natural gas inlet (1212).

5. The drying apparatus (100) according to claim 4, characterized in that, The first drying mechanism (1) further includes: An electrically adjustable window (13) is provided on the side wall of the first drying chamber (11) and connected to the air outlet (1213).

6. The drying apparatus (100) according to claim 1, characterized in that, The hydrogen fuel cell assembly (22) includes: Hydrogen fuel cells (221); Power device (222), electrically connected to the hydrogen fuel cell (221); and An electrical controller (223) is electrically connected between the power device (222) and the heating component (23).

7. The drying apparatus (100) according to claim 6, characterized in that, The hydrogen fuel cell assembly (22) also includes: The battery monitoring module (24) includes: a signal generator (241), a signal processing module (242), a monitoring probe (243), a monitoring module (244), a communication port (245), and a host computer (246); The signal generator (241) is used to receive the voltage and current signals of the hydrogen fuel cell (221) and convert them into pulse width modulation signals, which are then transmitted to the signal processing module (242). The signal processing module (242) is connected to the power device (222) to adjust the output voltage and output current of the power device (222). The monitoring probe (243) is used to acquire the monitoring data of the hydrogen fuel cell (221) and feed it back to the monitoring module (244). The monitoring module (244) feeds the monitoring data back to the signal processing module (242). The signal processing module (242) outputs the monitoring data to the communication port (245). The communication port (245) communicates with the host computer (246) to transmit the monitoring data to the host computer (246).

8. The drying apparatus (100) according to claim 7, characterized in that, The monitoring module (244) includes at least one of the following: an impact monitoring module (2441), a voltage monitoring module (2442), a capacity monitoring module (2443), and a temperature monitoring module (2444).

9. The drying apparatus (100) according to claim 6, characterized in that, The heating component (23) includes: A heating element (231) is disposed in the second drying chamber (21) and electrically connected to the hydrogen fuel cell (221); and A heat storage element (232) is disposed in the second drying chamber (21) and at least partially covers the heating element (231).

10. The drying apparatus (100) according to claim 1, characterized in that, The first drying mechanism (1) further includes: a first fan (16), which is disposed on the top wall inside the first drying chamber (11); The second drying mechanism (2) further includes a second fan (27), which is disposed on the top wall inside the second drying chamber (21).

Images