Organic garbage aerobic fermentation treatment equipment

Abstract

The application discloses an organic garbage aerobic fermentation treatment equipment. The equipment comprises a tank body, a heat preservation bottom tank is clamped below the outside of the tank body, a heating mechanism is arranged on one side of the heat preservation bottom tank, a heat transfer mechanism is arranged above the heat preservation bottom tank and is used for guiding heat generated by the heating mechanism to the upper part of the tank body, a rotating shaft is rotatably arranged in the middle of the inside of the tank body, a liquid storage ring shell is fixedly installed above the inside of the tank body, a tank top is arranged on the top of the tank body, an atomizing nozzle is communicatively installed on the liquid storage ring shell, a water scraping mechanism is arranged on the outside of the rotating shaft and is used for collecting condensed water on the lower surface of the tank top into the inner cavity of the liquid storage ring shell and atomizing the condensed water back to the material surface layer through the atomizing nozzle. The heat transfer mechanism is used for guiding hot air to the upper part of the tank body and uniformly releasing the hot air, so that the vertical temperature gradient in the tank is eliminated; the water scraping mechanism is used for closed-loop recycling condensed water and atomizing the condensed water back to the material surface layer, so that the overall humidity uniformity of the material is maintained, and the aerobic fermentation efficiency and the composting degree are improved.

Description

Technical Field

[0001] This application relates to the technical field of organic waste fermentation treatment equipment, and in particular to an aerobic fermentation treatment equipment for organic waste. Background Technology

[0002] Aerobic fermentation of organic waste (such as kitchen waste, garden waste, and agricultural straw) is one of the effective ways to achieve its resource utilization. Currently, common closed-loop aerobic fermentation equipment typically integrates stirring, ventilation, and heating systems to accelerate the microbial metabolic process. However, existing equipment has the following technical drawbacks: First, during the high-temperature fermentation stage, a large amount of moisture evaporates from the material. The resulting liquid water is usually discharged directly as wastewater and cannot be recycled. Simultaneously, the upper layer of material experiences continuous evaporation and lacks effective replenishment, resulting in significantly lower humidity than the lower layer, which inhibits the activity of aerobic microorganisms and reduces the fermentation rate. Second, the heating elements in existing equipment are mostly concentrated at the bottom of the tank. When heat is transferred from bottom to top, the material's thermal conductivity hinders the process, creating a significant vertical temperature gradient within the tank. The temperature of material near the bottom is higher, while the temperature of material in the middle and upper layers is lower, leading to a decrease in overall fermentation efficiency and a longer processing cycle. Summary of the Invention

[0003] The present invention aims to solve the technical problems in existing aerobic fermentation treatment equipment, such as water waste caused by direct discharge of condensate, insufficient humidity of the upper layer of materials, and uneven vertical temperature gradient in the tank caused by concentrated heating at the bottom.

[0004] To solve the above-mentioned technical problems, the present invention provides an aerobic fermentation treatment device for organic waste, including a tank body. An insulated bottom tank is fitted onto the lower part of the tank body. A heating mechanism is provided on one side of the insulated bottom tank, and a heat transfer mechanism is provided above the insulated bottom tank to guide the heat generated by the heating mechanism to the upper part of the tank body. A rotating shaft is rotatably provided in the middle of the tank body. A liquid storage ring shell is fixedly installed on the upper part of the tank body. A tank top is provided on the top of the tank body. An atomizing nozzle is connected to the liquid storage ring shell. A scraping mechanism is provided above the outside of the rotating shaft. The scraping mechanism is used to collect the condensate on the lower surface of the tank top into the inner cavity of the liquid storage ring shell and atomize it through the atomizing nozzle to replenish the material surface.

[0005] Furthermore, a fixing mechanism is provided at the rear end of the tank body. The fixing mechanism includes a steel frame, and multiple supports are installed on the steel frame. The outside of the tank body is connected to the multiple supports.

[0006] Furthermore, a bracket is provided above the steel frame, and a drive mechanism is provided on one side of the bracket. The drive mechanism includes a motor and a reducer. The motor and the reducer are both fixedly mounted on the bracket. The output shaft of the motor is connected to the input shaft of the reducer through a pulley assembly. The upper end of the rotating shaft extends into the reducer, and the reducer drives the rotating shaft to rotate.

[0007] Furthermore, the heat transfer mechanism includes an insulated conduction box, a suction pipe, an air inlet pipe, and a ring pipe; the insulated conduction box is vertically installed above one side of the insulated bottom tank and fixed inside the tank body; the lower end of the insulated conduction box is connected to the inside of the insulated bottom tank through the suction pipe; the ring pipe is located above the inside of the tank body and is connected to the upper end of the insulated conduction box through the air inlet pipe, and one or more fan-shaped atomizing nozzles are connected along the circumferential direction of the ring pipe.

[0008] Furthermore, the heating mechanism includes a fan and an electric heater, the air outlet of the fan is connected to the air inlet of the electric heater, and the air outlet of the electric heater is connected to the inside of the insulated bottom tank.

[0009] Furthermore, a spiral turning mechanism is provided on the outside of the rotating shaft. The spiral turning mechanism includes a scraper blade and a spiral pusher frame. The spiral pusher frame is connected to the outside of the rotating shaft. The scraper blade is installed below the rotating shaft and arranged in a circumferential direction. Multiple scraper blades slide against the bottom wall of the inner side of the tank.

[0010] Furthermore, a centrifugal ring chamber is fixedly connected above the rotating shaft, and an anti-clogging cone mesh is fixedly installed at the lower end of the centrifugal ring chamber. The centrifugal ring chamber is located below the liquid storage ring shell, and the rotating shaft drives the centrifugal ring chamber and the anti-clogging cone mesh to rotate.

[0011] Furthermore, a level gauge is installed inside the liquid storage ring shell.

[0012] Furthermore, a suction pipe is connected and installed at the lower part of the tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By incorporating a scraping mechanism, a rotating bracket fixed above the rotating shaft drives the guide rod and scraper to rotate synchronously with the shaft. The scraper continuously slides and adheres to the lower surface of the tank top, scraping down the water droplets that condense on the lower surface of the tank top during aerobic fermentation. The scraped-down condensate falls into the guide groove of the guide rod and, guided by gravity and the tilt angle of the guide rod, flows along the guide groove into the inner cavity of the liquid storage ring shell for storage. It is then atomized by the atomizing nozzle and evenly sprayed onto the surface of the material. This achieves closed-loop recovery and recycling of fermentation condensate, overcoming the water waste caused by direct discharge of condensate in existing technologies. At the same time, it precisely replenishes the moisture lost from continuous evaporation in the upper layer of the material, maintains the overall uniformity of the material's moisture content, ensures the activity of aerobic microorganisms, and helps improve the fermentation rate and degree of decomposition.

[0014] By installing heat transfer mechanisms on both sides of the insulated bottom tank, the hot air generated by the heating mechanism enters the insulated bottom tank, then flows through the suction pipe into the insulated conduction boxes on both sides. Within the conduction boxes, the air rises and enters the ring pipe through the air inlet pipe. Finally, it is evenly released into the upper part of the tank by fan-shaped atomizing nozzles evenly spaced along the circumference at the bottom of the ring pipe. This creates a circulating path where hot air is guided upwards from the insulated bottom tank, through the conduction boxes on both sides to the upper part of the tank, and then naturally convections downwards. This effectively eliminates the significant vertical temperature gradient caused by the concentrated arrangement of heating elements at the bottom in existing technologies, ensuring a uniform temperature distribution of the material inside the tank from top to bottom. It avoids the problem of overheating at the bottom and insufficient temperature in the middle and upper layers, thus improving overall fermentation efficiency and shortening the processing cycle.

[0015] By setting a spiral turning mechanism outside the rotating shaft, the spiral pusher continuously turns and pushes the material inside the tank when the shaft rotates, preventing the material from caking. This ensures that the material comes into full and uniform contact with the hot air released from the top of the tank by the heat transfer mechanism and the atomized water vapor sprayed from the atomizing nozzle. This strengthens the mass and heat transfer process inside the tank, ensures the uniformity of the fermentation reaction, and further improves the processing efficiency of aerobic fermentation. Attached Figure Description

[0016] Figure 1 A three-dimensional schematic diagram of the overall structure of the aerobic fermentation treatment equipment for organic waste of the present invention is shown.

[0017] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the aerobic fermentation treatment equipment for organic waste of the present invention from another angle.

[0018] Figure 3 A schematic diagram showing the connection between the tank body and the inner part of the insulated bottom tank of the present invention is provided.

[0019] Figure 4 A schematic diagram of the connection structure between the heat transfer mechanism and the insulated bottom tank of the present invention is shown.

[0020] Figure 5 A three-dimensional schematic diagram of the connection structure between the rotating shaft, the centrifugal annular chamber, and the rotating support of the present invention is shown.

[0021] Figure 6 A schematic diagram showing the connection structure between the tank top, the liquid storage ring shell, and the centrifugal ring chamber of the present invention is shown.

[0022] Figure 7 A perspective schematic diagram of the connection structure between the scraper and the guide rod of the present invention is shown.

[0023] Figure 8 This is a perspective view of the connection structure between the scraper and the guide rod of the present invention from another angle.

[0024] In the diagram: 1. Tank body; 2. Motor; 3. Steel frame; 4. Insulated bottom tank; 5. Tank top; 6. Bracket; 7. Level gauge; 8. Feed hopper; 9. Sealing cover; 10. Suction pipe; 11. Fan; 12. Electric heater; 13. Air inlet pipe; 14. Support; 15. Reducer; 16. Insulated conduction box; 17. Suction pipe; 18. Scraper blade; 19. Spiral pusher frame; 20. Anti-clogging cone; 21. Liquid storage ring shell; 22. Ring pipe; 23. Air inlet pipe; 24. Rotating shaft; 25. Scraper blade; 26. Centrifugal ring chamber; 27. Overhead rod; 28. Atomizing nozzle; 29. ​​Solenoid valve; 30. Rotating support; 31. Guide rod; 32. Fan-shaped atomizing nozzle. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the following embodiments are used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application.

[0026] This application relates to an aerobic fermentation treatment device for organic waste, mainly addressing the technical problems in existing equipment such as direct discharge of fermentation condensate leading to water waste, insufficient humidity on the upper layer of materials, and uneven vertical temperature gradient within the tank due to concentrated heating at the bottom. The core structural mechanism involves: a scraping mechanism to remove condensate droplets from the lower surface of the tank top and collect them into the inner cavity of the liquid storage ring shell; then, the condensate is atomized by an atomizing nozzle and returned to the material surface, achieving closed-loop water utilization; simultaneously, a heat transfer mechanism guides the hot air generated by the heating mechanism to the upper part of the tank for release, forming a circulation of hot air within the tank and eliminating the vertical temperature gradient.

[0027] Reference Figure 1-8This embodiment provides an implementation plan for an aerobic fermentation treatment device for organic waste. The device includes a tank body 1, with an insulated bottom tank 4 mounted on the lower part of the tank body 1. The insulated bottom tank 4 has good insulation performance to reduce heat loss. A heating mechanism is provided on one side of the insulated bottom tank 4 to generate heat and deliver hot air into the insulated bottom tank 4. A heat transfer mechanism is provided above the insulated bottom tank 4 to guide the hot air generated by the heating mechanism from the insulated bottom tank 4 to the upper part of the tank body 1 and release it evenly, thereby forming a circulating flow path of hot air from bottom to top and then from top to bottom within the tank body 1. This eliminates the vertical temperature gradient caused by concentrated heating at the bottom, ensuring a uniform temperature distribution of the material within the tank body 1 from top to bottom. A rotating shaft 24 is rotatably installed in the middle of the tank body 1, and the rotating shaft 24 can rotate around its axis under external drive. A liquid storage ring shell 21 is fixedly installed on the upper part of the tank body 1. The liquid storage ring shell 21 is a ring-shaped shell structure with an airflow channel inside. This airflow channel can both accommodate the collected condensate and allow airflow, thus serving the dual functions of liquid storage and ventilation. An atomizing nozzle 28 is connected to the liquid storage ring shell 21 to atomize the condensate in the inner cavity of the liquid storage ring shell 21 and spray it out. A tank top 5 is provided on the top of the tank body 1. A scraping mechanism is provided on the upper part of the rotating shaft 24. The scraping mechanism rotates synchronously with the rotating shaft 24 to collect the condensate on the lower surface of the tank top 5 into the inner cavity of the liquid storage ring shell 21, and then atomize it through the atomizing nozzle 28 to replenish the material surface.

[0028] In use, first open the sealing cover 9 above the feed hopper 8 and feed the organic waste material to be processed into the tank 1 through the feed channel of the feed hopper 8. An external material hoist can be used to lift the material to the feed hopper 8 for feeding, reducing manual labor and improving feeding efficiency. After feeding, close the sealing cover 9 to create a relatively sealed fermentation space inside the tank 1. Start the heating mechanism; hot air enters the insulated bottom tank 4 to heat the material at the bottom of the tank 1. Simultaneously, the heat transfer mechanism guides the hot air from the insulated bottom tank 4 to the upper part of the tank 1 for even release, creating a hot air circulation within the tank 1, ensuring a uniform temperature distribution and eliminating vertical temperature gradients. Once the temperature reaches the suitable fermentation temperature (usually 50–65℃), start the rotating shaft 24. The scraping mechanism rotates with the shaft 24, continuously scraping away water droplets condensed on the lower surface of the tank top 5 during fermentation and collecting them in the inner cavity of the liquid storage ring shell 21 for storage. When the condensate in the storage ring shell 21 accumulates to a certain amount, the condensate is atomized by the atomizing nozzle 28 and sprayed evenly onto the surface of the material, precisely replenishing the moisture lost by continuous evaporation in the upper layer of the material. After the fermentation process is completed, the plug on the outside of the suction pipe 10 is removed, and the external suction pipe is connected to the suction pipe 10 to suction and discharge the fermented material inside the tank 1. After the discharge is completed, the plug is reinstalled to seal the suction pipe 10 and prevent external impurities from entering the tank 1.

[0029] The heat transfer mechanism guides hot air to the upper part of tank 1 for uniform release, forming a hot air circulation system within the tank. This effectively eliminates the vertical temperature gradient caused by concentrated heating at the bottom in existing technologies, ensuring a uniform temperature distribution of the material from top to bottom. This avoids the problem of overheating at the bottom and insufficient temperature in the middle and upper layers, thus improving overall fermentation efficiency and shortening the processing cycle. The water scraping mechanism collects fermentation condensate in a closed loop and atomizes it through atomizing nozzles to replenish the material surface. This overcomes the waste of water resources caused by direct discharge of condensate and precisely replenishes the moisture lost from continuous evaporation in the upper layer of the material, maintaining the uniformity of overall material humidity, ensuring the activity of aerobic microorganisms, and contributing to improved fermentation rate and maturity.

[0030] In some embodiments, a fixing mechanism is provided at the rear end of the tank body 1. The fixing mechanism includes a steel frame 3, with multiple supports 14 symmetrically installed at the front end of the steel frame 3. The rear end of the tank body 1 is connected to the multiple supports 14, thereby stably fixing the tank body 1 to the steel frame 3. The multiple supports 14 form a multi-point connection support, keeping the tank body 1 stable during stirring operation and avoiding vibration or displacement caused by stirring reaction force. A bracket 6 is provided above the steel frame 3, and a drive mechanism is provided on one side of the bracket 6.

[0031] The drive mechanism includes a motor 2 and a reducer 15, both of which are fixedly mounted on a bracket 6. The output shaft of the motor 2 is connected to the input shaft of the reducer 15 via a pulley assembly. The upper end of the rotating shaft 24 extends into the reducer 15, and the reducer 15 drives the rotating shaft 24 to rotate. During operation, the motor 2 transmits power to the reducer 15 through the pulley assembly. The reducer 15 reduces the speed and increases the torque to drive the rotating shaft 24 to rotate, providing reliable rotational power for the spiral material turning mechanism and the scraping mechanism.

[0032] The heat transfer mechanism includes an insulated conduction box 16, an air suction pipe 17, an air inlet pipe 23, and a ring pipe 22. The insulated conduction box 16 is vertically installed above one side of the insulated bottom tank 4, with one side embedded inside and fixed to the tank body 1. The lower end of the insulated conduction box 16 is connected to the inside of the insulated bottom tank 4 through the air suction pipe 17. The ring pipe 22 is located above the inside of the tank body 1 and is connected to the upper end of the insulated conduction box 16 through the air inlet pipe 23. A fan-shaped atomizing nozzle 32 is connected to the ring pipe 22 along the circumferential direction. In some embodiments, an insulated conduction box 16 is vertically installed above each of the two sides of the insulated bottom tank 4. The two insulated conduction boxes 16 are respectively connected to the inside of the insulated bottom tank 4 through their respective air suction pipes 17 and are respectively connected to the ring pipe 22 through the air inlet pipe 23. The hot air generated by the heating mechanism first enters the insulated bottom tank 4 to heat the material at the bottom of the tank 1. Part of the hot air enters the insulated conduction box 16 via the suction pipe 17, rises within the box, and then enters the ring pipe 22 via the air inlet pipe 23. Finally, it is evenly released into the upper part of the tank 1 via the fan-shaped atomizing nozzle 32 along the circumferential direction. This forms a circulating path of hot air from bottom to top and then from top to bottom, effectively eliminating the vertical temperature gradient caused by concentrated heating at the bottom, and ensuring a uniform temperature distribution of the material inside the tank 1 from top to bottom.

[0033] In some embodiments, the heating mechanism includes a fan 11 and an electric heater 12. The air outlet of the fan 11 is connected to the air inlet of the electric heater 12, and the air outlet of the electric heater 12 is connected to the inside of the insulated bottom tank 4 via an air inlet pipe 13. The fan 11 draws in ambient air, which is heated to the temperature required for fermentation by the electric heater 12. The hot air is then sent into the inside of the insulated bottom tank 4 through the air inlet pipe 13 to continuously provide heat for the fermentation process. The electric heater 12 may be equipped with a heating wire or a PTC heating element. This heating mechanism, used in conjunction with the heat transfer mechanism, satisfies the thermophilic requirements of microbial fermentation and achieves uniform heating through hot air circulation.

[0034] Reference Figure 3 and Figure 5 The spiral material turning mechanism includes a spiral pusher frame 19 and scraper blades 18. The spiral pusher frame 19 is connected to the outside of the rotating shaft 24 (in some embodiments, the inner edge of the spiral pusher frame 19 is connected to the outside of the rotating shaft 24 through multiple connecting rods). The scraper blades 18 are installed below the rotating shaft 24 and arranged in a circumferential direction. Multiple scraper blades 18 slide against the inner bottom wall of the tank body 1. When the rotating shaft 24 rotates, the spiral pusher frame 19 rotates accordingly, causing the material to turn from the bottom to the top and push from the center to the edge, preventing the material from caking and promoting full contact between the material and hot air and moisture. At the same time, the scraper blades 18 rotate with the rotating shaft 24, continuously scraping up the material deposited at the bottom of the tank body 1, avoiding long-term accumulation of material that could lead to local anaerobic or overheating, and further improving the uniformity of material mixing and mass and heat transfer efficiency.

[0035] Reference Figure 5 and Figure 6 In some embodiments, a centrifugal annular chamber 26 is fixedly connected to the upper part of the rotating shaft 24 (in some embodiments, it is fixedly connected via an overhead rod 27). The centrifugal annular chamber 26 is an annular shell structure that rotates synchronously with the rotating shaft 24. An anti-clogging cone mesh 20 is fixedly installed at the lower end of the centrifugal annular chamber 26. The anti-clogging cone mesh 20 rotates synchronously with the centrifugal annular chamber 26 and the rotating shaft 24. The anti-clogging cone mesh 20 is conical, and its mesh size is smaller than that of the material particles. It is set above the spiral pusher frame 19 to prevent the material splashed when the spiral pusher frame 19 turns the material from entering the area of ​​the fan-shaped atomizing nozzle 32, ensuring the stable operation of the spraying system. The centrifugal annular chamber 26 is located below the liquid storage ring shell 21, and the ring pipe 22 is located outside the centrifugal annular chamber 26. When the centrifugal annular chamber 26 rotates with the rotating shaft 24, if there is material adhering to its surface, it can be thrown off by centrifugal force to achieve self-cleaning. Simultaneously, when the fan-shaped atomizing nozzle 32 ejects gas, the rotating centrifugal annular chamber 26 generates a turbulence effect, promoting the uniform diffusion of hot air above the tank 1 and further improving the uniformity of temperature and humidity distribution inside the tank. It should be noted that both the anti-clogging cone mesh 20 and the outer surface of the centrifugal annular chamber 26 can be coated with a smooth finish to reduce material adhesion and facilitate self-cleaning.

[0036] Reference Figures 5 to 8 The scraping mechanism includes a rotating bracket 30, a guide rod 31, and a scraper 25. The rotating bracket 30 is fixedly mounted above the rotating shaft 24 and rotates with the shaft 24. Both the guide rod 31 and the scraper 25 are mounted on the rotating bracket 30. The guide rod 31 is mounted at an angle on the rotating bracket 30, so that the guide groove has a certain angle to guide the condensate to flow towards the liquid storage ring shell 21. The guide rod 31 has a guide groove, the end of which extends into the inner cavity of the liquid storage ring shell 21. It should be noted that an airflow channel is provided inside the liquid storage ring shell 21. This airflow channel can both accommodate the collected condensate and allow airflow, thus taking into account the dual functions of liquid storage and ventilation. In some embodiments, the rotating bracket 30 preferably adopts a U-shaped frame structure, with both ends of the U-shaped frame extending to both sides. The structure is simple, symmetrical, and easy to balance the installation of the guide rod 31 and the scraper 25. The scraper 25 is vertically mounted inside the guide groove and rotates with the rotating bracket 30, slidingly adhering to the lower surface of the tank top 5. During aerobic fermentation, the moisture in the material evaporates upon heating, forming high-temperature, high-humidity gas. This gas rises to the top of the tank (5) and condenses into fine water droplets on the lower surface of the top of the tank (5), where it encounters the lower surface. The rotating support (30) drives the guide rod (31) and scraper (25) to rotate. The scraper (25) continuously scrapes the condensed water droplets from the lower surface of the top of the tank (5). The water droplets fall into the guide groove of the guide rod (31) and, under the influence of gravity and the tilt angle of the guide rod (31), flow along the guide groove into the inner cavity of the liquid storage ring shell (21) for storage, thus achieving continuous collection of condensate.

[0037] In some embodiments, a level gauge 7 is installed inside the liquid storage ring shell 21. The detection end of the level gauge 7 extends into the inner cavity of the liquid storage ring shell 21 and reaches the lowest point inside the liquid storage ring shell 21, for real-time detection of the condensate water level inside the liquid storage ring shell 21. When the level gauge 7 detects that the water level has reached the set value, the external control system opens the solenoid valve 29, and the condensate water in the liquid storage ring shell 21 is atomized by the atomizing nozzle 28 and sprayed out, evenly sprayed onto the surface of the material, achieving precise moisture replenishment. Since the atomizing nozzles 28 are arranged at equal intervals along the circumference, the atomized water vapor can evenly cover the upper area of ​​the material, maintaining the overall humidity uniformity of the material, ensuring the activity of aerobic microorganisms, thereby improving the fermentation rate and the degree of decomposition. When the water level in the liquid storage ring shell 21 is lower than the set value, the control system closes the solenoid valve 29, stops spraying, and achieves automatic control of water replenishment as needed.

[0038] In some embodiments, a feed hopper 8 is connected to the front end of the tank 1. A feeding channel is provided inside the upper part of the feed hopper 8, and a sealing cover 9 is movably attached to the top of the feed hopper 8. During feeding, the sealing cover 9 is opened, and the organic waste material to be processed is fed into the tank 1 through the feeding channel of the feed hopper 8. It should be noted that an external material hoist can be used to lift the material to the feed hopper 8 for feeding to reduce the intensity of manual labor. After feeding, the sealing cover 9 is closed, so that a relatively closed fermentation space is formed inside the tank 1 to maintain an aerobic fermentation environment. A suction pipe 10 is connected to the lower part of the tank 1. After the fermentation process is completed, the plug on the outside of the suction pipe 10 is removed, and the external suction pipe is connected to the suction pipe 10 to suck out the decomposed material inside the tank 1. After the material is discharged, the plug is reinstalled to seal the suction pipe 10 to prevent external impurities from entering the tank 1.

[0039] The following section further explains the synergistic cooperation of the above structures in conjunction with the overall working process. During use, first open the sealing cover 9 and feed the organic waste material to be processed into the tank 1 through the feeding channel of the feeding hopper 8. After feeding, close the sealing cover 9. Start the blower 11 and electric heater 12. The hot air generated by the electric heater 12 is sent into the insulated bottom tank 4 through the air inlet pipe 13 to preheat the material at the bottom of the tank 1. Simultaneously, the hot air in the insulated bottom tank 4 enters the insulated conduction box 16 through the suction pipe 17, rises, and enters the ring pipe 22 through the air inlet pipe 23. It is then evenly released into the upper part of the tank 1 by the fan-shaped atomizing nozzle 32, forming a hot air circulation within the tank 1, ensuring a uniform temperature distribution. After the temperature rises to the suitable fermentation temperature (usually 50-65℃), start the motor 2. The motor 2 drives the reducer 15 through the pulley assembly, and the reducer 15 drives the rotating shaft 24 to rotate. When the rotating shaft 24 rotates, the spiral pusher 19 and the scraper blade 18 rotate synchronously. The spiral pusher 19 continuously tumbles and pushes the material, while the scraper blade 18 scrapes up the material on the inner bottom wall of the tank 1, preventing material deposition and caking, and ensuring full contact between the material and hot air to promote the metabolism of aerobic microorganisms. During fermentation, the moisture in the material evaporates due to heat, forming high-temperature, high-humidity gas that rises to the tank top 5 and condenses into water droplets on the lower surface of the tank top 5. The rotating shaft 24 drives the rotating support 30 and guide rod 31 to rotate, and the scraper blade 25 scrapes down the condensed water droplets on the lower surface of the tank top 5. The water droplets flow into the inner cavity of the liquid storage ring shell 21 along the guide groove. The level gauge 7 detects the water level in the liquid storage ring shell 21. When the water level reaches the set value, the control system opens the solenoid valve 29, and the condensed water is atomized by the atomizing nozzle 28 and sprayed evenly onto the surface of the material, achieving precise moisture replenishment. Meanwhile, the anti-blocking cone 20 prevents material splashed by the spiral pusher 19 from entering the area of ​​the fan-shaped atomizing nozzle 32; the rotating centrifugal ring 26 uses centrifugal force to throw off the material attached to its surface and generates a turbulence effect, promoting the uniform diffusion of atomized water vapor and hot air above the tank 1. After the fermentation process is completed, the suction pipe is connected to the suction pipe 10, the external plug of the suction pipe 10 is removed, the suction pipe is connected to the suction pipe 10, and the fermented material is discharged from the tank 1. After the discharge is completed, the plug is reinstalled to complete the entire aerobic fermentation process.

[0040] It is understood that, without altering the core structural mechanism described above, the heat transfer mechanism is not limited to the specific combination of the insulated conduction box 16 and the ring pipe 22. As long as the hot air generated by the heating mechanism can be guided from the insulated bottom tank 4 to the upper part of the tank body 1 and released evenly, the technical effect of eliminating the vertical temperature gradient can be achieved. The number of scraper blades 25 and the inclination angle of the guide rod 31 in the scraper mechanism can be adjusted according to the diameter of the tank body 1 and actual usage requirements, as long as the scraper blades 25 can maintain contact with the lower surface of the tank top 5 and the guide rod 31 can guide the condensate to the inner cavity of the liquid storage ring shell 21. Where there is no conflict, the technical features of the aforementioned embodiments can be combined with each other.

[0041] In some implementations, considering the acidic environment and high humidity generated by organic waste fermentation, the tank body 1, spiral pusher 19, scraper blades 18, rotating shaft 24, liquid storage ring shell 21, ring pipe 22, and atomizing nozzle 28 can be made of stainless steel to ensure corrosion resistance and service life. The insulated bottom tank 4 can adopt a composite structure with an outer layer of carbon steel and an inner layer of 304 stainless steel, with the interlayer filled with rock wool insulation material with a thickness of about 50mm, to balance structural strength and insulation effect and reduce heat loss.

[0042] In some embodiments, the equipment is equipped with a control system, which can be a PLC or an embedded microcontroller. The control system is electrically connected to the motor 2, fan 11, electric heater 12, solenoid valve 29, and level gauge 7, and also electrically connected to temperature sensors installed at the top, middle, and bottom of the tank 1, a humidity sensor on the material surface, and an oxygen concentration sensor inside the tank. Based on the temperature sensor's detection signal, the control system automatically adjusts the output power of the electric heater 12 and the speed of the fan 11 to maintain the tank temperature within the suitable fermentation range of 50–65°C. Based on the humidity sensor's detection signal and the water level signal from the level gauge 7, it automatically opens or closes the solenoid valve 29 to achieve precise, on-demand water spraying. Based on the oxygen concentration sensor's detection signal, it adjusts the opening of the exhaust pipe's electric regulating valve to maintain good aerobic conditions inside the tank and ensure the metabolic activity of aerobic microorganisms. Through the automated closed-loop control of the above-mentioned control system, the coordinated and precise regulation of the three key fermentation parameters—temperature, humidity, and oxygen concentration—is achieved, significantly improving the automation level of the equipment and the stability of the fermentation process, and reducing the need for manual intervention.

[0043] Optionally, an exhaust pipe can be installed on the top of the tank (5) or the upper part of the tank body (1). The end of the exhaust pipe is connected to a deodorization device, which can be one or more combinations of an activated carbon filter, a biological filter, or a UV photolysis device. This device treats the exhaust gas containing ammonia, hydrogen sulfide, and other odorous gases generated during fermentation. After treatment, the gas is discharged, effectively preventing the odor from overflowing and affecting the surrounding environment. An electric regulating valve can be installed on the exhaust pipe, linked to the pressure sensor inside the tank, to maintain a slightly negative or normal pressure inside the tank, ensuring the stability of the aerobic fermentation environment. The control system can simultaneously control the electric regulating valve on the exhaust pipe, adjusting the valve opening in real time based on the oxygen concentration sensor signal. This maintains aerobic conditions while effectively collecting and treating the exhaust gas, achieving integrated intelligent control of ventilation, temperature control, humidification, and deodorization.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An aerobic fermentation treatment device for organic waste, comprising a tank (1); characterized in that, The bottom of the tank body (1) is fitted with an insulated bottom tank (4). A heating mechanism is provided on one side of the insulated bottom tank (4), and a heat transfer mechanism is provided above the insulated bottom tank (4) to guide the heat generated by the heating mechanism to the upper part of the tank body. The tank body (1) has a rotating shaft (24) rotatably installed in the middle. A liquid storage ring shell (21) is fixedly installed on the upper part of the tank body (1). A tank top (5) is provided on the top of the tank body (1). An atomizing nozzle (28) is connected to the liquid storage ring shell (21). A scraping mechanism is provided on the upper part of the rotating shaft (24). The scraping mechanism is used to collect the condensate on the lower surface of the tank top (5) into the inner cavity of the liquid storage ring shell (21) and atomize it back to the surface of the material through the atomizing nozzle (28).

2. The aerobic fermentation treatment equipment for organic waste according to claim 1, characterized in that, The rear end of the tank (1) is provided with a fixing mechanism, which includes a steel frame (3) and multiple supports (14) are installed on the steel frame (3). The tank (1) is connected to the outside of the multiple supports (14).

3. The aerobic fermentation treatment equipment for organic waste according to claim 2, characterized in that, A bracket (6) is provided above the steel frame (3). A drive mechanism is provided on one side of the bracket (6). The drive mechanism includes a motor (2) and a reducer (15). The motor (2) and the reducer (15) are both fixedly installed on the bracket (6). The output shaft of the motor (2) is connected to the input shaft of the reducer (15) through a pulley assembly. The upper end of the rotating shaft (24) extends into the interior of the reducer (15). The reducer (15) drives the rotating shaft (24) to rotate.

4. The aerobic fermentation treatment equipment for organic waste according to claim 1, characterized in that, The heat transfer mechanism includes a heat-insulating conduction box (16), a suction pipe (17), an air inlet pipe (23), and a ring pipe (22). The heat-insulating conduction box (16) is vertically installed above one side of the heat-insulating bottom tank (4) and fixed inside the tank body (1). The lower end of the heat-insulating conduction box (16) is connected to the inside of the heat-insulating bottom tank (4) through the suction pipe (17). The ring pipe (22) is located above the inside of the tank body and is connected to the upper end of the heat-insulating conduction box (16) through the air inlet pipe (23). The ring pipe (22) is connected to one or more fan-shaped atomizing nozzles (32) along the circumferential direction.

5. The aerobic fermentation treatment equipment for organic waste according to claim 4, characterized in that, The heating mechanism includes a fan (11) and an electric heater (12). The air outlet of the fan (11) is connected to the air inlet of the electric heater (12), and the air outlet of the electric heater (12) is connected to the interior of the insulated bottom tank (4).

6. The aerobic fermentation treatment equipment for organic waste according to claim 1, characterized in that, A spiral turning mechanism is provided on the outside of the rotating shaft (24). The spiral turning mechanism includes a scraper blade (18) and a spiral pusher frame (19). The spiral pusher frame (19) is connected to the outside of the rotating shaft (24). The scraper blade (18) is installed below the rotating shaft (24) and arranged in a circumferential direction. The scraper blade (18) slides against the bottom wall of the inner side of the tank body (1).

7. The aerobic fermentation treatment equipment for organic waste according to claim 6, characterized in that, A centrifugal ring chamber (26) is fixedly connected above the rotating shaft (24), and an anti-clogging cone mesh (20) is fixedly installed at the lower end of the centrifugal ring chamber (26). The centrifugal ring chamber (26) is located below the liquid storage ring shell (21), and the rotating shaft (24) drives the centrifugal ring chamber (26) and the anti-clogging cone mesh (20) to rotate.

8. The aerobic fermentation treatment equipment for organic waste according to claim 1, characterized in that, The scraping mechanism includes a rotating bracket (30), a guide rod (31), and a scraper (25). The rotating bracket (30) is fixedly installed above the rotating shaft (24) and rotates with the rotating shaft (24). The guide rod (31) and the scraper (25) are both installed on the rotating bracket (30). The guide rod (31) has a guide groove, the end of which extends into the liquid storage ring shell (21). The scraper (25) is located above the guide groove and slides against the lower surface of the tank top (5).

9. The aerobic fermentation treatment equipment for organic waste according to claim 1, characterized in that, A level gauge is installed inside the liquid storage ring shell (21).

10. The aerobic fermentation treatment equipment for organic waste according to any one of claims 1-9, characterized in that, The lower part of the tank (1) is connected to a suction pipe (10).

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