Uniform heating system and method of reconstituting material and drying food products

Abstract

This invention discloses a uniform heating system and a method for regenerating materials and drying food. Traditional heating methods rely on heat transfer from the inside out between particles, resulting in a large temperature difference between the inside and outside of the material, which affects the drying or contamination removal effect. The rotating drive component of this invention allows the cavity to rotate in both directions and adjust its tilt angle. Based on the current signal detected by the ammeter, the tilt angle of the cavity can be set at the angle corresponding to the maximum current when the material flows within the cavity. This controls the material flow rate within the cavity to achieve the optimal current value, resulting in rapid and uniform heating. During material regeneration, if the material is conductive, it is heated directly; if the material is non-conductive, it is mixed with conductive particles, and the conductive particles are heated first. Each conductive particle then transfers heat to the surrounding material. With the help of thermocouple feedback signals, the regeneration efficiency and effect, especially for non-conductive materials, are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of material heating technology, specifically relating to a uniform heating system and a method for regenerating materials and drying food, mainly used for rapid and uniform heating of granular and powdered materials. Background Technology

[0002] In many applications of heating granular and powdered materials, there is a need for both rapid temperature rise and uniform heating with precise temperature control. Simultaneously, in many drying and regeneration processes, it is crucial that the gases generated during drying or regeneration can diffuse quickly. For example, in activated carbon regeneration, the activated carbon needs to be rapidly heated to 700–900 degrees Celsius. Temperatures that are too low will not achieve the desired regeneration effect, and the adsorbed impurities will not be completely removed. Temperatures that are too high will reduce the adsorption capacity of the regenerated activated carbon.

[0003] Traditional heating methods involve significant heat loss during the flow of hot air and the emission of exhaust gases. For materials with small particle gaps, the hot air flow is difficult to penetrate the internal particle gaps, and the temperature can only be raised by heat transfer from the inside to the outside of the particles. This heat transfer time is long, and the temperature difference between the inside and outside of the material is large. In severe cases, the high-temperature zone on the outside of the material may melt or burn, while the low-temperature zone in the middle may not reach the required temperature, affecting the drying or contamination removal effect. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a uniform heating system and a method for recycling materials and drying food, thereby achieving rapid and uniform heating of granular and powdered materials.

[0005] The present invention provides a uniform heating system comprising a cavity, a rotary drive, electrode plates, a first thermocouple, a gas distribution plate, a corundum plate, a first hopper, and a second hopper. The cavity is fixed on a rotating frame. The rotating frame and the fixed frame form a rotating pair and are driven by the rotary drive to rotate around a horizontal axis. The inner cavity of the cavity is a regeneration flow channel, and two opposing electrode plates are fixed in the middle of the regeneration flow channel. A gas distribution plate is fixed above each of the two electrode plates, and an insulating layer is provided at the connection between the electrode plates and the gas distribution plate. A corundum plate is fixed below the electrode plates. The first thermocouple is inserted into the side of the cavity; the first hopper is fixed at the top of the cavity, and the second hopper is fixed at the bottom; the first hopper is equipped with a first electric slide valve at the top and a second electric slide valve at the bottom; the second hopper is equipped with a third electric slide valve in the middle and a fourth electric slide valve at the bottom; the second thermocouple and a hygrometer are inserted into the side of the first hopper, and an air extraction hole is opened; the second thermocouple and a hygrometer are inserted into the side of the second hopper, and an air extraction hole is opened; both the first and second hoppers are equipped with plugs at their air extraction holes.

[0006] Preferably, each electrode plate is connected to a terminal block passing through the cavity, the terminal block is connected to a constant voltage power supply via a wire, and an ammeter is connected in series in the circuit between the two electrode plates and the constant voltage power supply; the voltage provided by the constant voltage power supply is not higher than 150V.

[0007] Preferably, the regeneration flow channel between the two air distribution plates and the inner cavity of the cavity is an airflow chamber, which is connected to the inner end of the air inlet pipe passing through the cavity, and the outer end of the air inlet pipe is connected to an air supply device.

[0008] More preferably, the gas supply device includes an air source, a CO2 source, and a steam source; the air source, CO2 source, and steam source are each connected to a main pipe through a branch pipe, and the main pipe is connected to an air inlet pipe; each branch pipe is equipped with a switch valve.

[0009] Preferably, a No. 1 storage device is provided directly above the No. 1 silo, and a No. 5 electric slide valve is provided at the bottom of the No. 1 storage device.

[0010] Preferably, a No. 2 storage device is provided directly below the No. 2 silo, and a No. 6 electric slide valve is provided on the top of the No. 2 storage device.

[0011] The method for regenerating materials using a uniform heating system according to the present invention comprises the following steps:

[0012] Step 1: If the material to be regenerated is conductive, it is directly fed into the cavity and the second hopper from hopper 1; if the material to be regenerated is non-conductive (not necessarily absolutely non-conductive, but rather has a high resistance, making it difficult to heat directly with the electrode plates, as heating with the electrode plates would take a long time, result in a large temperature difference between the inside and outside of the material, and lead to uneven heating), it is mixed with conductive particles and fed into the cavity and the second hopper from hopper 1; power is supplied to the two electrode plates.

[0013] Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The material in the No. 2 hopper, or the mixture of material and conductive particles, gradually flows into the cavity and into the No. 1 hopper. If the material is conductive, the two electrode plates directly heat the material. If the material is non-conductive, the two electrode plates first heat the conductive particles, which then transfer heat to the surrounding material. Then, the rotary drive unit rotates the cavity, performing one or two reciprocating rotations with an angle between the cavity and the vertical plane ranging from -45° to +45°. Thermocouple No. 1 continuously monitors the temperature of the material or the mixture of material and conductive particles in the cavity, and the ammeter continuously monitors the current. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit then drives the cavity to reach that angle. The system is set to stop at a set time. When the current detected by the ammeter is 0, the rotary drive unit rotates the cavity, causing the first hopper to face upwards. The material in the first hopper, or the mixture of material and conductive particles, gradually flows into the cavity and into the second hopper. If the material is conductive, the two electrode plates directly heat the material. If the material is not conductive, the two electrode plates first heat the conductive particles, and each conductive particle then transfers heat to the surrounding material. Next, the rotary drive unit rotates the cavity, performing one or two reciprocating rotations with the cavity and vertical plane at an angle of -45° to +45°. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when the cavity reaches this angle. When the current detected by the ammeter is 0, proceed to the next step.

[0014] Step 3: Repeat Step 2. After the material or the mixture of material and conductive particles in the cavity reaches the set temperature and continues for a preset time, the material regeneration is complete. Stop supplying power to the two electrode plates and remove the regenerated material.

[0015] The method for regenerating activated carbon using a uniform heating system according to the present invention comprises the following steps:

[0016] Step 1: Initially, place the cavity vertically with hopper 1 facing upwards. Open the first and second electric slide gate valves on hopper 1, open the third electric slide gate valve on hopper 2, and close the fourth electric slide gate valve on hopper 2. Add activated carbon from hopper 1, allowing it to flow into the cavity and hopper 2. After filling with activated carbon, close the first electric slide gate valve on hopper 1. Power is supplied to the two electrode plates. The air supply device delivers air to the air distribution plate, allowing air to enter the cavity.

[0017] Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The activated carbon in the No. 2 hopper gradually flows into the cavity and then into the No. 1 hopper. Two electrode plates heat the activated carbon. Then, the rotary drive unit rotates the cavity, performing one or two reciprocating rotations with an angle between the cavity and the vertical plane ranging from -45° to +45°. Thermocouple No. 1 continuously monitors the temperature of the activated carbon inside the cavity, and the ammeter continuously monitors the current. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when the cavity reaches this angle. When the current detected by the ammeter... When the value is 0, all the activated carbon in the second hopper has flowed out. At this time, the rotary drive drives the cavity to rotate, so that the first hopper faces upward. The activated carbon in the first hopper gradually flows into the cavity and into the second hopper. The two electrode plates heat the activated carbon. Then, the rotary drive drives the cavity to rotate, making one or two reciprocating rotations with the cavity and the vertical plane at an angle of -45° to +45°. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity reaches this angle position. When the current value detected by the ammeter is 0, proceed to the next step.

[0018] Step 3: Repeat Step 2. During the repetition, when thermocouple 1 detects that the activated carbon in the cavity is at 700-800℃, the gas supply device introduces water vapor into the cavity through the gas distribution plate. When thermocouple 1 detects that the activated carbon in the cavity is at 800-900℃, the gas supply device introduces water vapor and CO2 into the cavity through the gas distribution plate.

[0019] Step 4: After the activated carbon in the chamber has been heated to 800-900℃ for a preset time, the activated carbon regeneration is complete. The rotating drive then rotates the chamber, making it vertical with the No. 1 hopper facing upwards. Then, power supply to the two electrode plates is stopped, and the No. 6 electric slide valve on the No. 2 storage tank and the No. 4 electric slide valve on the No. 2 hopper are opened, allowing the regenerated activated carbon in the chamber to flow into the No. 2 storage tank. Finally, the No. 4 electric slide valve on the No. 2 storage tank and the No. 6 electric slide valve on the No. 2 storage tank are closed.

[0020] The method for regenerating magnesium sulfate using a uniform heating system according to the present invention comprises the following steps:

[0021] Step 1: Initially, place the cavity vertically with hopper 1 facing upwards; open electric slide gate valves 1 and 2 on hopper 1, open electric slide gate valve 3 on hopper 2, and close electric slide gate valve 4 on hopper 2. Add the magnesium sulfate and conductive particle mixture from hopper 1, allowing it to flow into the cavity and hopper 2; after filling with the magnesium sulfate and conductive particle mixture, close electric slide gate valve 1 on hopper 1; supply power to the two electrode plates.

[0022] Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The magnesium sulfate and conductive particle mixture in the No. 2 hopper gradually flows into the cavity and into the No. 1 hopper. Two electrode plates first heat the conductive particles, and each conductive particle then transfers heat to the surrounding magnesium sulfate. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. Thermocouple No. 1 monitors the temperature of the magnesium sulfate and conductive particle mixture in the cavity in real time, and the ammeter monitors the current in real time. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the current detected by the ammeter... When the value is 0, the mixture of magnesium sulfate and conductive particles in hopper 2 has completely flowed out. At this time, the rotary drive drives the cavity to rotate, so that hopper 1 faces upward. The mixture of magnesium sulfate and conductive particles in hopper 1 gradually flows into the cavity and then into hopper 2. The two electrode plates first heat the conductive particles, and each conductive particle then transfers heat to the surrounding magnesium sulfate. Next, the rotary drive drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity reaches this angle position. When the current value detected by the ammeter is 0, the next step is executed.

[0023] Step 3: Repeat Step 2. After the magnesium sulfate and conductive particle mixture in the cavity has been at 300°C for a preset time, the magnesium sulfate regeneration (drying) is complete. Rotate the drive unit to rotate the cavity so that the cavity is placed vertically with the No. 1 hopper facing upwards. Then stop supplying power to the two electrode plates, open the No. 6 electric slide valve on the No. 2 storage tank, and open the No. 4 electric slide valve on the No. 2 hopper to allow the regenerated magnesium sulfate in the cavity to flow into the No. 2 storage tank. Finally, close the No. 4 electric slide valve on the No. 2 hopper and the No. 6 electric slide valve on the No. 2 storage tank.

[0024] The method for drying food using a uniform heating system according to the present invention comprises the following steps:

[0025] Step 1: Install a filter screen between electric slide gate valves 1 and 2, and between electric slide gate valves 3 and 4. With hopper 2 facing upwards and electric slide gate valve 4 open while electric slide gate valve 3 is closed, place the food into hopper 2, then close electric slide gate valve 4. Next, with hopper 1 facing upwards and electric slide gate valves 1 and 2 open, introduce conductive particles into hopper 1. The conductive particles pass through the filter screen between electric slide gate valves 1 and 2 and flow into the cavity. Finally, close electric slide gate valve 2, place food into hopper 1, and then close electric slide gate valve 1.

[0026] Step 2: Power is supplied to the two electrode plates to heat the conductive particles inside the cavity; thermocouple 1 monitors the temperature of the conductive particles inside the cavity in real time; when thermocouple 1 detects that the temperature of the conductive particles inside the cavity has reached the preset value, power is stopped to the two electrode plates, and the electric sliding valve 3 is opened, allowing the conductive particles inside the cavity to fall into hopper 2 and mix with the food in hopper 2; then, the electric sliding valve 3 is closed, and the conductive particles dry the food in hopper 2; after drying is completed, the plug at the vent of hopper 2 is removed, the atmosphere in hopper 2 is evacuated, and then the plug is reinstalled.

[0027] Step 3: Open the No. 3 electric slide valve to supply power to the two electrode plates. The rotary drive unit drives the cavity to rotate, so that the No. 2 hopper faces upward, and the conductive particles in the No. 2 hopper gradually flow into the cavity. The two electrode plates heat the conductive particles. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. Thermocouple No. 1 monitors the temperature of the conductive particles in the cavity in real time, and the ammeter monitors the current in real time. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the ammeter... When the detected current value is 0 and thermocouple No. 1 detects that the temperature of the conductive particles in the cavity has reached the preset value, the power supply to the two electrode plates is stopped, the No. 3 electric slide valve is closed, and the No. 2 electric slide valve is opened. The conductive particles in the cavity fall into the No. 1 hopper and mix with the food in the No. 1 hopper. Then, the No. 2 electric slide valve is closed, and the conductive particles dry the food in the No. 1 hopper. The No. 2 thermocouple monitors the temperature in the No. 1 hopper in real time, and the humidity meter at the No. 1 hopper monitors the humidity in the No. 1 hopper in real time. After drying is completed, the plug at the vent of the No. 1 hopper is removed, the atmosphere in the No. 1 hopper is evacuated, and then the plug is reinstalled.

[0028] Step 4: Open the No. 2 electric slide gate valve to supply power to the two electrode plates. The rotary drive unit drives the cavity to rotate, so that the No. 1 hopper faces upward, and the conductive particles in the No. 1 hopper gradually flow into the cavity. The two electrode plates heat the conductive particles. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. The No. 1 thermocouple monitors the temperature of the conductive particles in the cavity in real time, the ammeter monitors the current in real time, and the controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the ammeter... When the detected current value is 0 and thermocouple No. 1 detects that the temperature of the conductive particles in the cavity has reached the preset value, the power supply to the two electrode plates is stopped, the No. 2 electric slide valve is closed, and the No. 3 electric slide valve is opened. The conductive particles in the cavity fall into the No. 2 hopper and mix with the food in the No. 2 hopper. Then, the No. 3 electric slide valve is closed, and the conductive particles dry the food in the No. 2 hopper. The No. 3 thermocouple monitors the temperature in the No. 2 hopper in real time, and the humidity meter at the No. 2 hopper monitors the humidity in the No. 2 hopper in real time. After drying is completed, the plug at the vent of the No. 2 hopper is removed, the atmosphere in the No. 2 hopper is evacuated, and then the plug is reinstalled.

[0029] Step 5: Repeat steps 3 and 4 until the humidity readings of both the humidity meter at silo 1 and the humidity meter at silo 2 are less than the threshold value 1, then proceed to the next step.

[0030] Step Six: Increase the preset value, and repeat Steps Three and Four until the humidity readings of both the humidity meter at hopper one and the humidity meter at hopper two are less than threshold two, then proceed to the next step.

[0031] Step 7: Open the No. 3 electric slide gate valve, rotate the drive unit to rotate the cavity so that the No. 2 hopper faces upward, and the conductive particles in the No. 2 hopper flow into the cavity; then, close the No. 3 electric slide gate valve to store the conductive particles in the cavity; next, open the No. 1 electric slide gate valve, take out the dried food from the No. 1 hopper, rotate the drive unit to rotate the cavity so that the No. 1 hopper faces upward, open the No. 4 electric slide gate valve, and take out the dried food from the No. 2 hopper; finally, open the No. 6 electric slide gate valve, and then open the No. 3 electric slide gate valve to allow the conductive particles to flow into the No. 2 storage container.

[0032] The beneficial effects of this invention are as follows:

[0033] The rotary drive of this invention can rotate the cavity in both directions and adjust its tilt angle. Based on the current signal detected by the ammeter, the tilt angle of the cavity can be set at the tilt angle corresponding to the maximum current when the material flows in the cavity. This controls the flow rate of the material in the cavity to achieve the optimal current value. Since the voltage is constant, the maximum current can generate the most and most stable heat per unit time. When the heated material is activated carbon particles, both the inner and outer activated carbon can be heated quickly and evenly. Or, when the heated material is a non-conductive material (such as magnesium sulfate), conductive particles (such as steel balls) are heated quickly and evenly first before the heated material is heated quickly and evenly. Or, when the heated material is food, conductive particles are heated quickly and evenly first before the food is dried in a closed environment. The conductive particles are solid particles that act as a high-temperature heat transfer medium. They are used to dynamically and rapidly mix and heat the non-conductive particles of the material being heated. The heat exchange resistance is low, and the heating is fast and uniform. With the help of the feedback signal from the thermocouple, precise heating can be achieved. Ultimately, the material being heated is rapidly, uniformly, and accurately heated, which greatly improves the regeneration efficiency and effect of the material, especially the non-conductive material. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the uniform heating system of the present invention.

[0035] Figure 2 This is a flowchart illustrating the process of regenerating activated carbon according to the present invention.

[0036] Figure 3 This is a flowchart illustrating the process of regenerating magnesium sulfate according to the present invention.

[0037] Figure 4 This is a flowchart illustrating the process of drying shiitake mushrooms according to the present invention. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figure 1As shown, a uniform heating system includes a cavity 14, a rotary drive, electrode plates 17, a first thermocouple 15, a gas distribution plate 6, a corundum plate 18, a first hopper 7, and a second hopper 19. The cavity 14 is fixed on a rotating frame 4. The rotating frame 4 and the fixed frame form a rotating pair and are driven by the rotary drive to rotate around a horizontal axis. The inner cavity of the cavity 14 is a regeneration flow channel, and two electrode plates 17 are fixed in the middle of the regeneration flow channel. A gas distribution plate 6 is fixed above each of the two electrode plates 17, and an insulating layer is provided at the connection between the electrode plates 17 and the gas distribution plate 6. A corundum plate 18 is fixed below the electrode plates 17 to suppress arcing. A thermocouple 15 is inserted into the side of the cavity 14 to detect the temperature of the material inside the cavity 14; a hopper 7 is fixed at the top of the cavity 14 and a hopper 19 is fixed at the bottom; a first electric slide valve 10 is installed at the top of the hopper 7 and a second electric slide valve 12 is installed at the bottom; a third electric slide valve 20 is installed in the middle of the hopper 19 and a fourth electric slide valve 22 is installed at the bottom; a second thermocouple 11 and a hygrometer are inserted into the side of the hopper 7 and an air extraction port is opened; a third thermocouple 21 and a hygrometer are inserted into the side of the hopper 19 and an air extraction port is opened; plugs are provided at the air extraction ports of both the hopper 7 and the hopper 19.

[0041] As a preferred option, the cavity 14 is provided with heat-resistant and corrosion-resistant insulation cotton.

[0042] Preferably, the rotary drive component includes a motor 1, a worm 2, and a worm wheel 3; the worm wheel 3 is fixed on the rotating frame 4 and meshes with the worm 2; the worm 2 is fixed to the output shaft of the motor 1.

[0043] Preferably, each electrode plate 17 is connected to a terminal block 16 passing through the cavity 14. The terminal block 16 is connected to a constant voltage power supply via a wire, and an ammeter is connected in series in the circuit between the two electrode plates 17 and the constant voltage power supply for real-time current detection. The voltage provided by the constant voltage power supply is not higher than 150V.

[0044] As a preferred option, the air distribution plate 6 is made of high-temperature resistant stainless steel.

[0045] Preferably, the regeneration flow channel between the two air distribution plates 6 and the inner cavity of the cavity 14 is an airflow cavity 13. The airflow cavity 13 is connected to the inner end of the air inlet pipe 5 that passes through the cavity 14, and the outer end of the air inlet pipe 5 is connected to an air supply device.

[0046] More preferably, the gas supply device includes an air source, a CO2 source, and a steam source; the air source, CO2 source, and steam source are each connected to the main pipe through a branch pipe, and the main pipe is connected to the air inlet pipe 5; each branch pipe is equipped with a switch valve; wherein the air source outputs air, the CO2 source outputs CO2, and the steam source outputs water vapor, the air source can be an air pump, the CO2 source can be a CO2 cylinder, and the steam source can be a steam engine.

[0047] As a preferred option, thermocouple 15, thermocouple 11, and thermocouple 21 are each connected to a thermocouple calibration table for easy temperature observation.

[0048] As a preferred option, a No. 1 storage device 8 is provided directly above the No. 1 silo 7 to store materials and input materials into the No. 1 silo 7; a No. 5 electric slide gate valve 9 is provided at the bottom of the No. 1 storage device 8.

[0049] As a preferred option, a No. 2 storage device 24 is provided directly below the No. 2 silo 19 for collecting the processed material, and a No. 6 electric slide valve 23 is provided on the top of the No. 2 storage device 24.

[0050] Among them, the signal output terminals of the ammeter, thermocouple 15, thermocouple 11, thermocouple 21 and hygrometer are all connected to the controller. Motor 1, electric slide gate valve 10, electric slide gate valve 12, electric slide gate valve 20, electric slide gate valve 22, electric slide gate valve 9, electric slide gate valve 23 and the switch valve are all controlled by the controller.

[0051] Example 2

[0052] like Figure 2 As shown, the method for regenerating activated carbon using the uniform heating system in Example 1 mainly completes the regeneration of activated carbon within cavity 14. The specific steps are as follows:

[0053] Step 1: Initially, cavity 14 is placed vertically with hopper 7 facing upwards; electric slide gate valve 10 and electric slide gate valve 12 on hopper 7 are in the open state, electric slide gate valve 20 on hopper 2 is in the open state, and electric slide gate valve 22 on hopper 2 is in the closed state. Activated carbon is added from hopper 7 (in the preferred embodiment above, activated carbon can be stored in storage tank 8; when electric slide gate valve 9 on storage tank 8 is opened, activated carbon falls into hopper 7), and the activated carbon flows into cavity 14 and hopper 19. After the activated carbon is filled, close the No. 1 electric slide valve 10 on the No. 1 hopper 7; supply power to the two electrode plates 17; since the activated carbon in the cavity 14 is in the range of 0 to 700°C at this time, the air supply device supplies air to the air distribution plate 6, so that the air enters the cavity (the waste gas generated by the regeneration of activated carbon can be extracted from the air extraction hole of the No. 2 hopper 19 for further treatment before being discharged).

[0054] Step Two: The rotary drive unit rotates the cavity 14, causing the second hopper 19 to face upwards. The activated carbon in the second hopper 19 gradually flows into the cavity 14 and then into the first hopper 7. Two electrode plates heat the activated carbon. Then, the rotary drive unit rotates the cavity 14, performing one or two reciprocating rotations with the cavity 14 forming an angle between -45° and +45° with the vertical plane. Thermocouple 15 continuously monitors the temperature of the activated carbon in the cavity 14, and the ammeter continuously monitors the current. The controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive unit stops when the cavity 14 reaches this angle position. When the ammeter detects... When the current value is 0, all the activated carbon in the second hopper 19 has flowed out. At this time, the rotary drive drives the cavity 14 to rotate, so that the first hopper 7 faces upward. The activated carbon in the first hopper 7 gradually flows into the cavity 14 and into the second hopper 19. The two electrode plates heat the activated carbon. Then, the rotary drive drives the cavity 14 to rotate, making one or two reciprocating rotations with the cavity 14 and the vertical plane within the range of -45° to +45°. The controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity 14 reaches this angle position. When the current value detected by the ammeter is 0, the next step is executed.

[0055] Step 3: Repeat Step 2. During the repetition, when thermocouple 15 detects that the activated carbon in cavity 14 is at 700-800°C, the gas supply device introduces water vapor into the cavity through the gas distribution plate 6. When thermocouple 15 detects that the activated carbon in cavity 14 is at 800-900°C, the gas supply device introduces water vapor and CO2 into the cavity through the gas distribution plate 6 (the exhaust gas can be extracted from the exhaust port of silo 19 for further treatment before being discharged).

[0056] Activated carbon regeneration involves three key stages: The drying stage, where the activated carbon temperature is between 100℃ and 150℃, causes the adsorbed water within the activated carbon to evaporate and some low-boiling-point organic compounds to decompose; the carbonization stage, where the activated carbon temperature is between 150℃ and 700℃, allows different organic compounds to be eliminated from the activated carbon matrix through volatilization, decomposition, carbonization, and oxidation, respectively, opening up the pores blocked by the activated carbon; and the activation stage, where the activated carbon temperature is between 700℃ and 900℃, after high-temperature carbonization, a significant portion of the organic compounds are released. Some carbides remain in the micropores of activated carbon. At this time, the carbides need to undergo a gasification reaction with oxidizing gases such as water vapor and carbon dioxide. Water vapor is added when the activated carbon temperature is between 700℃ and 800℃, and water vapor and carbon dioxide are added when the activated carbon temperature is between 800℃ and 900℃. This causes the residual carbides to be gasified into gases such as CO at around 850℃, thereby cleaning the surface of the micropores and restoring the adsorption performance of the activated carbon. The main reaction equations are: C + H2O = H2 + CO, C + CO2 = 2CO.

[0057] Step 4: After the activated carbon in chamber 14 has been heated to 800-900℃ for a preset time, the activated carbon regeneration is complete. The rotating drive drives chamber 14 to rotate, so that chamber 14 is placed vertically and hopper 7 faces upward. Then, stop supplying power to the two electrode plates 17, open the sixth electric gate valve 23 on hopper 24, and open the fourth electric gate valve 22 on hopper 29, so that the regenerated activated carbon in chamber 14 flows into hopper 24. Finally, close the fourth electric gate valve 22 on hopper 29 and the sixth electric gate valve 23 on hopper 24.

[0058] Example 3

[0059] like Figure 3 As shown, the method for regenerating (drying) magnesium sulfate using the uniform heating system in Example 1 mainly involves heating magnesium sulfate (a commonly used desiccant) by mixing conductive particles (conductive steel balls or other chemically stable conductive materials) with the magnesium sulfate in the cavity 14. The specific steps are as follows:

[0060] Step 1: Initially, cavity 14 is placed vertically with hopper 7 facing upwards; electric slide gate valve 10 and electric slide gate valve 12 on hopper 7 are open, electric slide gate valve 20 on hopper 2 is open, and electric slide gate valve 22 on hopper 2 is closed. A mixture of magnesium sulfate and conductive steel balls is added from hopper 7 (this mixture can be stored in storage tank 8; when electric slide gate valve 9 on storage tank 8 is opened, the mixture falls into hopper 7). The mixture flows into cavity 14 and hopper 19. In this embodiment, the diameter of the conductive steel balls is 0.5 mm, and the mass ratio of magnesium sulfate to conductive steel balls is 1:10. After filling the mixture of magnesium sulfate and conductive steel balls, close the No. 1 electric slide valve 10 on the No. 1 silo 7; supply power to the two electrode plates 17 (when regenerating magnesium sulfate, the gas supply device does not need to supply gas to the cavity, and the waste gas generated by magnesium sulfate regeneration can be extracted from the air extraction hole of the No. 2 silo 19 for further treatment before being discharged).

[0061] Step Two: The rotary drive unit rotates the cavity 14, causing the second hopper 19 to face upwards. The mixture of magnesium sulfate and conductive steel balls in the second hopper 19 gradually flows into the cavity 14 and into the first hopper 7. The two electrode plates first heat the conductive steel balls, and each conductive steel ball then transfers heat to the surrounding magnesium sulfate. Then, the rotary drive unit drives the cavity 14 to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity 14 and the vertical plane. Thermocouple 15 detects the temperature of the magnesium sulfate and conductive steel ball mixture in the cavity 14 in real time, and the ammeter detects the current in real time. The controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity 14 to this angle position. When the ammeter detects... When the current value is 0, the mixture of magnesium sulfate and conductive steel balls in hopper 19 has completely flowed out. At this time, the rotary drive drives the cavity 14 to rotate, so that hopper 7 faces upward. The mixture of magnesium sulfate and conductive steel balls in hopper 7 gradually flows into the cavity 14 and then into hopper 19. The two electrode plates first heat the conductive steel balls, and each conductive steel ball then transfers heat to the surrounding magnesium sulfate. Next, the rotary drive drives the cavity 14 to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity 14 and the vertical plane. The controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity 14 reaches this angle position. When the current value detected by the ammeter is 0, the next step is executed.

[0062] Step 3: Repeat Step 2. After the magnesium sulfate and conductive steel ball mixture in cavity 14 has been at 300°C for a preset time, the magnesium sulfate regeneration is complete (magnesium sulfate regeneration is the drying process). Rotate the drive unit to rotate cavity 14 so that cavity 14 is placed vertically with hopper 7 facing upwards. Then stop supplying power to the two electrode plates 17, open the sixth electric gate valve 23 on hopper 24, and open the fourth electric gate valve 22 on hopper 29, so that the regenerated magnesium sulfate in cavity 14 flows into hopper 24. Finally, close the fourth electric gate valve 22 on hopper 29 and the sixth electric gate valve 23 on hopper 24.

[0063] Example 4

[0064] like Figure 4 As shown, the method for drying shiitake mushrooms using the uniform heating system in Example 1 includes the following specific steps:

[0065] Step 1: Install a filter screen between electric slide gate valve 10 and electric slide gate valve 12, and between electric slide gate valve 20 and electric slide gate valve 22. Position hopper 19 upwards, with electric slide gate valve 22 open and electric slide gate valve 20 closed. Place the shiitake mushrooms into hopper 19, then close electric slide gate valve 22. Next, position hopper 7 upwards, with electric slide gate valves 10 and 12 open. Conductive steel balls are added from hopper 7 (the conductive steel balls can be stored in storage tank 8; when the electric valve 9 on storage tank 8 is opened, the conductive steel balls fall into hopper 7). The conductive steel balls pass through the filter screen between electric valve 10 and electric valve 12 and flow into cavity 14. In this embodiment, the mass ratio of shiitake mushrooms to conductive steel balls is 1:2 to 3. Then, electric valve 12 is closed, and after shiitake mushrooms are placed in hopper 7, electric valve 10 is closed.

[0066] Step 2: Power the two electrode plates 17 to heat the conductive steel ball inside the cavity 14 (the gas supply device does not need to supply gas to the cavity when drying shiitake mushrooms); thermocouple 15 monitors the temperature of the conductive steel ball inside the cavity 14 in real time; when thermocouple 15 detects that the temperature of the conductive steel ball inside the cavity 14 reaches the preset value (initially set to below 50℃), stop powering the two electrode plates 17, open the electric slide valve 20, and the conductive steel ball inside the cavity 14 falls into the second hopper 19 and mixes with the shiitake mushrooms in the second hopper 19; then, close the electric slide valve 20, and the conductive steel ball dries the shiitake mushrooms in the second hopper 19; after drying is completed, remove the plug at the vent of the second hopper 19, evacuate the atmosphere from the second hopper 19, and then reinstall the plug.

[0067] Step 3: Open the No. 3 electric slide valve 20 to supply power to the two electrode plates 17. The rotary drive unit drives the cavity 14 to rotate, so that the No. 2 hopper 19 faces upward. The conductive steel ball in the No. 2 hopper 19 gradually flows into the cavity 14; the two electrode plates heat the conductive steel ball; then, the rotary drive unit drives the cavity 14 to perform one or two reciprocating rotational movements within the range of -45° to +45° between the cavity 14 and the vertical plane. Thermocouple 15 detects the temperature of the conductive steel ball in the cavity 14 in real time, the ammeter detects the current in real time, and the controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity 14 to this angle position; when the current value detected by the ammeter is 0 (the second... When all the conductive steel balls in hopper 19 have flowed out and thermocouple 15 detects that the temperature of the conductive steel balls in cavity 14 has reached the preset value, the power supply to the two electrode plates 17 is stopped, the third electric valve 20 is closed, and the second electric valve 12 is opened. The conductive steel balls in cavity 14 fall into hopper 7 and mix with the mushrooms in hopper 7. Then, the second electric valve 12 is closed, and the conductive steel balls dry the mushrooms in hopper 7. The second thermocouple 11 monitors the temperature in hopper 7 in real time, and the humidity meter in hopper 7 monitors the humidity in hopper 7 in real time. After drying is completed, the plug at the vent of hopper 7 is removed, the atmosphere in hopper 7 is evacuated, and the plug is reinstalled.

[0068] Step 4: Open the second electric slide gate valve 12 to supply power to the two electrode plates 17. The rotary drive unit drives the cavity 14 to rotate, so that the first hopper 7 faces upward. The conductive steel ball in the first hopper 7 gradually flows into the cavity 14; the two electrode plates heat the conductive steel ball; then, the rotary drive unit drives the cavity 14 to perform one or two reciprocating rotational movements within the range of -45° to +45° between the cavity 14 and the vertical plane. The first thermocouple 15 detects the temperature of the conductive steel ball in the cavity 14 in real time, the ammeter detects the current in real time, and the controller records the angle between the cavity 14 and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity 14 to this angle position; when the current detected by the ammeter... When the value is 0 and thermocouple 15 detects that the temperature of the conductive steel ball in cavity 14 has reached the preset value, the power supply to the two electrode plates 17 is stopped, the second electric valve 12 is closed, and the third electric valve 20 is opened. The conductive steel ball in cavity 14 falls into hopper 19 and mixes with the mushrooms in hopper 19. Then, the third electric valve 20 is closed, and the conductive steel ball dries the mushrooms in hopper 19. The third thermocouple 21 monitors the temperature in hopper 19 in real time, and the humidity meter in hopper 19 monitors the humidity in hopper 19 in real time. After drying is completed, the plug at the vent of hopper 19 is removed, the atmosphere in hopper 19 is evacuated, and the plug is reinstalled.

[0069] Step 5: Repeat steps 3 and 4 until the humidity readings at hygrometers at hopper 7 and hopper 19 are both less than threshold 1 (threshold 1 can be set based on the humidity values ​​in hopper 7 and hopper 19 corresponding to a surface moisture content of shiitake mushrooms below 20%), then proceed to the next step.

[0070] Step Six: Increase the preset value (but it should be below 80℃), repeat Steps Three and Four until the humidity values ​​detected by the humidity meter at hopper 7 and hopper 19 are both less than threshold two (threshold two can be set according to the humidity values ​​in hopper 7 and hopper 19 corresponding to the surface moisture content of shiitake mushrooms reaching below 11%), then proceed to the next step.

[0071] Step 7: Open the No. 3 electric slide gate valve 20, rotate the drive unit to rotate the cavity 14 so that the No. 2 hopper 19 faces upward, and the conductive steel ball in the No. 2 hopper 19 flows into the cavity 14; then, close the No. 3 electric slide gate valve 20 to store the conductive steel ball in the cavity 14; next, open the No. 1 electric slide gate valve 10, take out the dried shiitake mushrooms in the No. 1 hopper 7, rotate the drive unit to rotate the cavity 14 so that the No. 1 hopper 7 faces upward, open the No. 4 electric slide gate valve 22, and take out the dried shiitake mushrooms in the No. 2 hopper 19; finally, open the No. 6 electric slide gate valve 23, and then open the No. 3 electric slide gate valve 20 to let the conductive steel ball flow into the No. 2 storage container 24.

Claims

1. A uniform heating system comprising a cavity, a rotary drive, an electrode plate, a first thermocouple and a first hopper, characterized in that: It also includes an air distribution plate, a corundum plate, and a second hopper; the cavity is fixed on a rotating frame; the rotating frame and the fixed frame form a rotating pair, and are driven by a rotating drive to rotate around a horizontal axis; the inner cavity of the cavity is a regeneration flow channel, and two opposing electrode plates are fixed in the middle of the regeneration flow channel; an air distribution plate is fixed above each of the two electrode plates, and an insulating layer is provided at the connection between the electrode plate and the air distribution plate; a corundum plate is fixed below the electrode plates; a first thermocouple is inserted into the side of the cavity; The body has a No. 1 hopper fixed at the top and a No. 2 hopper fixed at the bottom. The No. 1 hopper is equipped with a No. 1 electric slide valve at the top and a No. 2 electric slide valve at the bottom. The No. 2 hopper is equipped with a No. 3 electric slide valve in the middle and a No. 4 electric slide valve at the bottom. The No. 1 hopper has a No. 2 thermocouple and a hygrometer inserted into its side and has an air extraction hole. The No. 2 hopper has a No. 3 thermocouple and a hygrometer inserted into its side and has an air extraction hole. Both the No. 1 and No. 2 hoppers have plugs at their air extraction holes. Each electrode plate is connected to a terminal block that passes through the cavity. The terminal block is connected to a constant voltage power supply via a wire, and an ammeter is connected in series in the circuit between the two electrode plates and the constant voltage power supply. The voltage provided by the constant voltage power supply is no higher than 150V.

2. The uniform heating system of claim 1, wherein: The regeneration flow channel between the two air distribution plates and the inner cavity of the cavity is the airflow chamber. The airflow chamber is connected to the inner end of the air inlet pipe that passes through the cavity, and the outer end of the air inlet pipe is connected to the air supply device.

3. The uniform heating system of claim 2, wherein: The gas supply device includes an air source, a CO2 source, and a steam source; the air source, CO2 source, and steam source are each connected to a main pipe via a branch pipe, and the main pipe is connected to an air inlet pipe; each branch pipe is equipped with a switch valve.

4. The uniform heating system of claim 1, wherein: Above the No. 1 silo is a No. 1 storage device, and at the bottom of the No. 1 storage device is a No. 5 electric slide valve.

5. The uniform heating system of claim 3, wherein: The No. 2 storage device is located directly below the No. 2 silo, and the No. 6 electric slide valve is located on the top of the No. 2 storage device.

6. A method of using the uniform heating system of claim 5 to reanimate a material, characterized by: The specific steps are as follows: Step 1: If the material to be regenerated is conductive, it is directly fed into the cavity and the second hopper from hopper 1; if the material to be regenerated is not conductive, it is mixed with conductive particles and fed into the cavity and the second hopper from hopper 1; power is supplied to the two electrode plates. Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The material in the No. 2 hopper, or the mixture of material and conductive particles, gradually flows into the cavity and into the No. 1 hopper. If the material is conductive, the two electrode plates directly heat the material. If the material is non-conductive, the two electrode plates first heat the conductive particles, which then transfer heat to the surrounding material. Then, the rotary drive unit rotates the cavity, performing one or two reciprocating rotations with an angle between the cavity and the vertical plane ranging from -45° to +45°. Thermocouple No. 1 continuously monitors the temperature of the material or the mixture of material and conductive particles in the cavity, and the ammeter continuously monitors the current. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit then drives the cavity to reach that angle. The process is as follows: When the ammeter detects a current value of 0, the rotary drive rotates the cavity, causing the first hopper to face upwards. The material in the first hopper, or a mixture of material and conductive particles, gradually flows into the cavity and into the second hopper. If the material is conductive, the two electrode plates directly heat it; if the material is non-conductive, the two electrode plates first heat the conductive particles, which then transfer heat to the surrounding material. Next, the rotary drive rotates the cavity, performing one or two reciprocating rotations with an angle between the cavity and the vertical plane ranging from -45° to +45°. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity reaches this angle. When the ammeter detects a current value of 0, proceed to the next step. Step 3: Repeat Step 2. After the material or the mixture of material and conductive particles in the cavity reaches the set temperature and continues for a preset time, the material regeneration is complete. Stop supplying power to the two electrode plates and remove the regenerated material.

7. A method of regenerating activated carbon using the uniform heating system of claim 5, characterized by: The specific steps are as follows: Step 1: Initially, place the cavity vertically with hopper 1 facing upwards; open electric slide gate valves 1 and 2 on hopper 1, open electric slide gate valve 3 on hopper 2, and close electric slide gate valve 4 on hopper 2. Add activated carbon from hopper 1, and the activated carbon flows into the cavity and hopper 2; after filling with activated carbon, close electric slide gate valve 1 on hopper 1; supply power to the two electrode plates. The air supply device delivers air to the air distribution plate, allowing the air to enter the cavity; Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The activated carbon in the No. 2 hopper gradually flows into the cavity and then into the No. 1 hopper. Two electrode plates heat the activated carbon. Then, the rotary drive unit rotates the cavity, performing one or two reciprocating rotations with an angle between the cavity and the vertical plane ranging from -45° to +45°. Thermocouple No. 1 continuously monitors the temperature of the activated carbon inside the cavity, and the ammeter continuously monitors the current. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when the cavity reaches this angle. When the ammeter detects the current... When the value is 0, all the activated carbon in hopper 2 has flowed out. At this time, the rotary drive drives the cavity to rotate, so that hopper 1 faces upward. The activated carbon in hopper 1 gradually flows into the cavity and into hopper 2. The two electrode plates heat the activated carbon. Then, the rotary drive drives the cavity to rotate, performing one or two reciprocating rotations with the cavity and the vertical plane at an angle of -45° to +45°. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity reaches this angle position. When the current value detected by the ammeter is 0, proceed to the next step. Step 3: Repeat Step 2. During the repetition, when thermocouple 1 detects that the activated carbon in the cavity is at 700~800℃, the gas supply device introduces water vapor into the cavity through the gas distribution plate. When thermocouple 1 detects that the activated carbon in the cavity is at 800~900℃, the gas supply device introduces water vapor and CO2 into the cavity through the gas distribution plate. Step 4: After the activated carbon in the chamber has been heated to 800~900℃ for a preset time, the activated carbon regeneration is complete. The rotating drive drives the chamber to rotate, so that the chamber is placed vertically with the No. 1 hopper facing upwards. Then, stop supplying power to the two electrode plates, open the No. 6 electric slide valve on the No. 2 storage tank, and open the No. 4 electric slide valve on the No. 2 hopper, so that the regenerated activated carbon in the chamber flows into the No. 2 storage tank. Finally, close the No. 4 electric slide valve on the No. 2 hopper and the No. 6 electric slide valve on the No. 2 storage tank.

8. A method of regenerating magnesium sulfate using the uniform heating system of claim 5, characterized by: The specific steps are as follows: Step 1: Initially, place the cavity vertically with hopper 1 facing upwards; open electric slide gate valves 1 and 2 on hopper 1, open electric slide gate valve 3 on hopper 2, and close electric slide gate valve 4 on hopper 2. Add the magnesium sulfate and conductive particle mixture from hopper 1, allowing it to flow into the cavity and hopper 2; after filling with the magnesium sulfate and conductive particle mixture, close electric slide gate valve 1 on hopper 1; supply power to the two electrode plates. Step Two: The rotary drive unit rotates the cavity, causing the No. 2 hopper to face upwards. The magnesium sulfate and conductive particle mixture in the No. 2 hopper gradually flows into the cavity and into the No. 1 hopper. Two electrode plates first heat the conductive particles, and each conductive particle then transfers heat to the surrounding magnesium sulfate. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. Thermocouple No. 1 monitors the temperature of the magnesium sulfate and conductive particle mixture in the cavity in real time, and the ammeter monitors the current in real time. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the current detected by the ammeter... When the value is 0, the mixture of magnesium sulfate and conductive particles in hopper 2 has completely flowed out. At this time, the rotary drive drives the cavity to rotate, making hopper 1 face upwards. The mixture of magnesium sulfate and conductive particles in hopper 1 gradually flows into the cavity and then into hopper 2. The two electrode plates first heat the conductive particles, and each conductive particle then transfers heat to the surrounding magnesium sulfate. Next, the rotary drive drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive stops when the cavity reaches this angle position. When the current value detected by the ammeter is 0, proceed to the next step. Step 3: Repeat Step 2. After the magnesium sulfate and conductive particle mixture in the cavity has been at 300°C for a preset time, the magnesium sulfate regeneration is complete. Rotate the drive unit to rotate the cavity so that the cavity is placed vertically with the No. 1 hopper facing upwards. Then stop supplying power to the two electrode plates, open the No. 6 electric slide valve on the No. 2 storage tank, and open the No. 4 electric slide valve on the No. 2 hopper to allow the regenerated magnesium sulfate in the cavity to flow into the No. 2 storage tank. Finally, close the No. 4 electric slide valve on the No. 2 hopper and the No. 6 electric slide valve on the No. 2 storage tank.

9. A method of drying food products using the uniform heating system of claim 5, characterized in that: The specific steps are as follows: Step 1: Install a filter screen between electric slide gate valve 1 and electric slide gate valve 2, and between electric slide gate valve 3 and electric slide gate valve 4. With hopper 2 facing upwards and electric slide gate valve 4 open while electric slide gate valve 3 is closed, place the food into hopper 2, then close electric slide gate valve 4. Next, with hopper 1 facing upwards and electric slide gate valves 1 and 2 open, introduce conductive particles into hopper 1. The conductive particles pass through the filter screen between electric slide gate valves 1 and 2 and flow into the cavity. Then, close electric slide gate valve 2, place food into hopper 1, and close electric slide gate valve 1. Step 2: Power is supplied to the two electrode plates to heat the conductive particles inside the cavity; thermocouple 1 monitors the temperature of the conductive particles inside the cavity in real time; when thermocouple 1 detects that the temperature of the conductive particles inside the cavity has reached the preset value, power is stopped to the two electrode plates, and the electric sliding valve 3 is opened, allowing the conductive particles inside the cavity to fall into hopper 2 and mix with the food in hopper 2; then, the electric sliding valve 3 is closed, and the conductive particles dry the food in hopper 2; after drying is completed, the plug at the vent of hopper 2 is removed, the atmosphere in hopper 2 is evacuated, and then the plug is reinstalled; Step 3: Open the No. 3 electric slide gate valve to supply power to the two electrode plates. The rotary drive unit drives the cavity to rotate, so that the No. 2 hopper faces upward, and the conductive particles in the No. 2 hopper gradually flow into the cavity. The two electrode plates heat the conductive particles. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. Thermocouple No. 1 monitors the temperature of the conductive particles in the cavity in real time, and the ammeter monitors the current in real time. The controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the ammeter... When the detected current value is 0 and thermocouple No. 1 detects that the temperature of the conductive particles in the cavity has reached the preset value, the power supply to the two electrode plates is stopped, the No. 3 electric slide valve is closed, and the No. 2 electric slide valve is opened. The conductive particles in the cavity fall into the No. 1 hopper and mix with the food in the No. 1 hopper. Then, the No. 2 electric slide valve is closed, and the conductive particles dry the food in the No. 1 hopper. The No. 2 thermocouple monitors the temperature in the No. 1 hopper in real time, and the humidity meter at the No. 1 hopper monitors the humidity in the No. 1 hopper in real time. After drying is completed, the plug at the vent of the No. 1 hopper is removed, the atmosphere in the No. 1 hopper is evacuated, and then the plug is reinstalled. Step 4: Open the No. 2 electric slide gate valve to supply power to the two electrode plates. The rotary drive unit drives the cavity to rotate, so that the No. 1 hopper faces upward, and the conductive particles in the No. 1 hopper gradually flow into the cavity. The two electrode plates heat the conductive particles. Then, the rotary drive unit drives the cavity to perform one or two reciprocating rotations within the range of -45° to +45° between the cavity and the vertical plane. The No. 1 thermocouple monitors the temperature of the conductive particles in the cavity in real time, the ammeter monitors the current in real time, and the controller records the angle between the cavity and the vertical plane corresponding to the maximum current. The rotary drive unit stops when it drives the cavity to reach this angle position. When the ammeter... When the detected current value is 0 and thermocouple No. 1 detects that the temperature of the conductive particles in the cavity has reached the preset value, the power supply to the two electrode plates is stopped, the No. 2 electric slide valve is closed, and the No. 3 electric slide valve is opened. The conductive particles in the cavity fall into the No. 2 hopper and mix with the food in the No. 2 hopper. Then, the No. 3 electric slide valve is closed, and the conductive particles dry the food in the No. 2 hopper. The No. 3 thermocouple monitors the temperature in the No. 2 hopper in real time, and the humidity meter at the No. 2 hopper monitors the humidity in the No. 2 hopper in real time. After drying is completed, the plug at the vent of the No. 2 hopper is removed, the atmosphere in the No. 2 hopper is evacuated, and then the plug is reinstalled. Step 5: Repeat steps 3 and 4 until the humidity readings of both the humidity meter at silo 1 and the humidity meter at silo 2 are less than the threshold value 1, then proceed to the next step; Step Six: Increase the preset value, and repeat Steps Three and Four until the humidity readings of both the humidity meter at hopper No. 1 and the humidity meter at hopper No. 2 are less than threshold two, then proceed to the next step. Step 7: Open the No. 3 electric slide gate valve, rotate the drive unit to rotate the cavity so that the No. 2 hopper faces upward, and the conductive particles in the No. 2 hopper flow into the cavity; then, close the No. 3 electric slide gate valve to store the conductive particles in the cavity; next, open the No. 1 electric slide gate valve, take out the dried food from the No. 1 hopper, rotate the drive unit to rotate the cavity so that the No. 1 hopper faces upward, open the No. 4 electric slide gate valve, and take out the dried food from the No. 2 hopper; finally, open the No. 6 electric slide gate valve, and then open the No. 3 electric slide gate valve to allow the conductive particles to flow into the No. 2 storage container.

Images