Agricultural solid waste aerobic fermentation device

Abstract

The application discloses an agricultural solid waste aerobic fermentation device, and relates to the technical field of agricultural solid waste treatment.The device comprises a fixed frame body, ventilation windows are arranged on four sides, and an opening and closing channel is arranged on the top; a crushing and feeding device is fixed above the fixed frame body, and the bottom output port is correspondingly connected with the opening and closing channel on the top of the fixed frame body; a vibrating device is fixed on the inner side of the top plane of the fixed frame body; a fermentation device is fixed on the vibrating device; and an aging cavity is fixed on the lower part of the fixed frame body and correspondingly connected with the vibrating device.The device can precisely control temperature, realize efficient energy utilization in the fermentation process, maintain a high activity state of microorganisms, realize integration of fermentation and sorting, and improve the treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of agricultural solid waste treatment technology, and more specifically, to an aerobic fermentation device for agricultural solid waste. Background Technology

[0002] To address the issues of limited and inefficient resource utilization pathways for agricultural solid waste in the Yellow River Basin, which suffers from multiple sources and low costs, this study analyzes the influencing factors on the stabilization and resource utilization of agricultural solid waste through aerobic fermentation, aiming to effectively improve the efficiency of aerobic fermentation. Currently, traditional fermentation devices in the field of agricultural solid waste aerobic fermentation treatment generally suffer from uneven material mixing, easy formation of anaerobic zones in deeper layers, and low temperature control precision, resulting in long fermentation cycles, low efficiency, and difficulty in automatically separating matured and immature particles, affecting subsequent aging effects. Furthermore, microbial activity is easily inhibited under high-temperature environments, and conventional ventilation systems cannot dynamically adjust according to temperature, further limiting the stability of the fermentation process and the improvement of compost quality. Therefore, it is necessary to provide an aerobic fermentation device for agricultural solid waste to solve the problems mentioned in the background. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: an aerobic fermentation device for agricultural solid waste, comprising:

[0004] Fixed frame; ventilation windows on all four sides, and an opening and closing passage at the top;

[0005] The crushing and feeding device is fixed directly above the fixed frame, with the bottom output port corresponding to the top opening and closing channel of the fixed frame.

[0006] The vibration device is fixed to the inside of the top plane of the fixed frame;

[0007] The fermentation device is fixed to the vibration device;

[0008] The aging chamber is fixed to the lower part of the fixed frame, and its top corresponds to the vibration device.

[0009] Furthermore, preferably, the vibration device includes:

[0010] The vibrating conveyor table is set at an angle, with its lower end corresponding to the aging chamber, and is fixedly connected to the inner side of the top plane of the fixed frame through multiple elastic buffers.

[0011] The opening and closing plate is movable and set at one end of the vibrating conveyor table corresponding to the aging chamber;

[0012] The vibratory motor is tilted and fixed to one side of the bottom of the vibratory conveyor table.

[0013] Furthermore, preferably, the fermentation apparatus includes:

[0014] The fermentation chamber is sealed and fixed on the vibrating conveyor table;

[0015] The self-adjusting ventilation components are arranged in two sets symmetrically at the front and back, with multiple components in each set along the conveying direction of the vibrating conveyor table, and fixed on the cavity wall of the fermentation chamber.

[0016] Two fixed crossbars are provided along the vibrating conveyor table and fixed on the vibrating conveyor table. Fixed bearings are provided on them, and a limiting bearing is also provided on the fixed crossbars away from the aging chamber.

[0017] Rotate the fermentation assembly, with both ends fixed to the inner ring of the fixed bearing on the fixed crossbar;

[0018] The drive motor is fixed at the end of the vibrating conveyor table away from the aging chamber.

[0019] A rotating component connects the drive motor and the rotating fermentation component;

[0020] The material conveying channel is fixed at one end of the rotating fermentation component near the rotating component and is fixedly connected to the opening and closing channel at the top of the fixed frame.

[0021] Furthermore, preferably, the rotating fermentation assembly includes:

[0022] The filter cartridge is installed between the fixed crossbars;

[0023] A fixed surface is fixedly installed at one end of the filter cylinder adjacent to the aging chamber, and a feed surface that is rotatably connected to the material conveying channel is provided at the other end.

[0024] The mixing shaft passes through the center of the fixed surface and the feed surface at both ends, and is fixedly connected to the inner ring of the fixed bearing on the fixed crossbar.

[0025] Furthermore, as a preferred embodiment, the mixing and stirring shaft is rotatably connected to the center of the fixed surface and the feed surface, and a spiral-shaped stirring blade is provided in the part inside the filter cylinder.

[0026] Furthermore, preferably, the rotating assembly includes:

[0027] A rotating shaft connects the drive motor and the rotating fermentation assembly;

[0028] Rotate the gear, which is fixed on the rotating shaft;

[0029] The transmission gear meshes with the rotating gear and is connected to the drive gear via a shaft, wherein the shaft is fixedly connected to the inner ring of the limiting bearing on the fixed crossbar.

[0030] The internal gear ring is fixedly connected to the outer end of the filter cylinder via the ring surface, and the internal teeth mesh with the drive gear.

[0031] Furthermore, preferably, the self-regulating ventilation assembly includes:

[0032] An external fixing cylinder is fixed to the side wall of the fermentation chamber;

[0033] The fixing ring is fixed to the inner side of the outer fixing cylinder near the fermentation chamber by connecting the ring surface;

[0034] The movable adjustment ring is located at the end of the outer fixed cylinder that is furthest from the fermentation chamber.

[0035] The expansion adjustment mechanism is fixed on the inner wall of the outer fixed cylinder and passes through the connecting ring surface, and is fixedly connected to the movable adjustment ring;

[0036] The flexible adjustment surface is fixedly connected at both ends to the opposite ends of the fixed ring and the movable adjustment ring, respectively.

[0037] Furthermore, preferably, the expansion adjustment mechanism includes:

[0038] The adjusting ring is fixed to the inner wall of the outer fixed cylinder and is fixedly connected to the fixed ring;

[0039] The movable annular surface is positioned inside the adjusting ring body.

[0040] The expansion material is placed inside the adjusting ring and located on the side of the moving ring surface away from the fixed ring;

[0041] Multiple push shafts are arranged in a ring, fixedly connected to the movable ring surface, and pass through the connecting ring surface and are fixedly connected to the movable adjusting ring by a fixing component;

[0042] A compression spring is sleeved on the push shaft and located between the moving ring surface and the connecting ring surface.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] In this invention, by coordinating the vibration device and the rotating fermentation component, a fluidized bed state is formed during the fermentation process, and the material is mixed in both directions, which effectively avoids the formation of a deep anaerobic zone and significantly shortens the fermentation cycle.

[0045] By setting shape memory alloy expansion material in the self-regulating ventilation component, the opening and closing degree of the airflow channel can be dynamically adjusted according to the fermentation temperature, thereby achieving precise temperature control and maintaining a high level of microbial activity.

[0046] By combining the filter cylinder and the spiral stirring blade, the fully fermented fine particles are automatically filtered out while the unfermented large particles continue to ferment, thus integrating fermentation and sorting and improving processing efficiency.

[0047] By driving the mixing and stirring shaft to rotate in opposite directions to the filter cylinder by the drive motor, the effect of material shearing and tumbling is enhanced, promoting uniform oxygen distribution and improving fermentation uniformity.

[0048] The inclined vibrating conveyor table connected by elastic buffers achieves the effect of directional conveying of fermented particles and automatic interception of unfermented particles, thus optimizing the fermentation-aging process.

[0049] By using an adjustment mechanism that combines expansion material and compression spring, a dynamic balance is achieved by increasing ventilation volume when the temperature rises and decreasing ventilation volume when the temperature falls, thus enabling efficient energy utilization during the fermentation process. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure of an aerobic fermentation device for agricultural solid waste.

[0051] Figure 2 Schematic diagram of the vibration device and fermentation device Figure 1 ;

[0052] Figure 3 Schematic diagram of the vibration device and fermentation device Figure 2 ;

[0053] Figure 4 This is a schematic diagram of the rotating fermentation assembly structure;

[0054] Figure 5 This is a schematic diagram of the rotating assembly structure;

[0055] Figure 6 This is a schematic diagram of a self-regulating ventilation structure.

[0056] Figure 7 This is a schematic diagram of the expansion adjustment mechanism.

[0057] In the diagram: 1. Fixed frame; 2. Crushing and feeding device; 3. Vibration device; 4. Fermentation device; 5. Aging chamber; 11. Ventilation window; 31. Vibrating conveyor table; 32. Opening and closing plate; 33. Vibration motor; 34. Elastic buffer; 41. Fermentation chamber; 42. Self-adjusting ventilation assembly; 43. Fixed crossbar; 44. Rotating fermentation assembly; 45. Drive motor; 46. Rotating assembly; 47. Conveying channel; 421. Outer fixed cylinder; 422. Fixed ring; 423. Moving adjusting ring ; 424. Connecting ring surface; 425. Expansion adjustment mechanism; 426. Soft adjustment surface; 441. Filter cylinder; 442. Fixed surface; 443. Mixing and stirring shaft; 444. Feeding surface; 461. Rotating shaft; 462. Rotating gear; 463. Transmission gear; 464. Drive gear; 465. Internal gear ring; 4251. Adjusting ring body; 4252. Moving ring surface; 4253. Expansion material; 4254. Push shaft; 4255. Compression spring; 4256. Fixing component. Detailed Implementation

[0058] Please see Figures 1 to 7 In this embodiment of the invention, an aerobic fermentation device for agricultural solid waste includes:

[0059] Fixed frame 1; ventilation windows 11 are provided on all four sides, and an opening and closing passage is provided on the top;

[0060] The crushing and feeding device 2 is fixed directly above the fixed frame 1, and its bottom output port corresponds to the top opening and closing channel of the fixed frame 1.

[0061] The vibration device 3 is fixed to the inside of the top plane of the fixed frame 1;

[0062] Fermentation device 4 is fixed on vibration device 3;

[0063] The aging chamber 5 is fixed to the lower part of the fixed frame 1, and its top corresponds to the vibration device 3.

[0064] In this embodiment, the vibration device 3 includes:

[0065] The vibrating conveyor table 31 is inclined, with its lower end corresponding to the aging chamber 5, and is fixedly connected to the inner side of the top plane of the fixed frame 1 through multiple elastic buffers 34.

[0066] The opening and closing plate 32 is movably positioned at one end of the vibrating conveyor table 31 corresponding to the aging chamber 5;

[0067] The vibratory motor 33 is inclined and fixed to one side of the bottom of the vibratory conveyor table 31.

[0068] In other words, after the crushing and feeding device 2 performs preliminary crushing of agricultural solid waste (such as straw, mushroom residue, and fruit shells), the preliminarily crushed agricultural solid waste material enters the fermentation device 4 above the vibrating device 3 through the opening and closing channel at the top of the fixed frame 1 for aerobic fermentation. During the fermentation process, the vibrating motor 33 starts and continuously vibrates the vibrating conveyor table 31, while the opening and closing plate 32 remains closed. Under the combined action of the vibrating conveyor table 31 and the fermentation device 4, the material forms a fluidized bed state in the fermentation device 4 for continuous fermentation. The fermented and decomposed fine particles are then passed through the fermentation machine. The fermentation device 4 falls onto the vibrating conveyor table 31. Unfermented large particles continue to ferment in the fermentation device 4, and fermented particles move towards the position of the opening and closing plate 32 under the action of vibration. After accumulating a certain amount on the vibrating conveyor table 31, the opening and closing plate 32 opens, and the fermented particles are conveyed to the aging chamber 5 for aging treatment. After aging, the material is discharged by the screw conveyor. The accumulation of fermented particles in the vibrating conveyor table 31 is based on the standard that it does not contact the bottom of the fermentation device 4. In addition, the external temperature of the fermentation device 4 and the temperature of the aging chamber 5 are regulated by the ventilation window 11 on the side of the fixed frame 1.

[0069] In this embodiment, the fermentation device 4 includes:

[0070] The fermentation chamber 41 is sealed and fixed on the vibrating conveyor table 31;

[0071] The self-adjusting ventilation components 42 are arranged in two sets symmetrically distributed front and back. Each set has multiple components along the conveying direction of the vibrating conveyor table 31 and is fixed on the cavity wall of the fermentation chamber 41.

[0072] Two fixed crossbars 43 are provided along the vibrating conveyor table 31 and fixed on the vibrating conveyor table 31. Fixed bearings are provided on them, and a limiting bearing is also provided on the fixed crossbars 43 that are far away from the aging chamber 5.

[0073] Rotate the fermentation component 44, and fix both ends to the inner ring of the fixed bearing on the fixed crossbar 43;

[0074] The drive motor 45 is fixed at the end of the vibrating conveyor table 31 away from the aging chamber 5;

[0075] Rotating component 46 is connected to drive motor 45 and rotating fermentation component 44;

[0076] The material conveying channel 47 is fixed at one end of the rotating fermentation component 44 adjacent to the rotating component 46, and is fixedly connected to the opening and closing channel at the top of the fixed frame 1.

[0077] In other words, the initially crushed agricultural solid waste material enters the rotating fermentation component 44 through the conveying channel 47 for fermentation. While the vibration device 3 continuously applies vibration to the fermentation device 4, the drive motor 45 drives the rotating fermentation component 44 to rotate continuously through the rotating component 46, which fully mixes and ferments the material in the rotating fermentation component 44, effectively avoiding the formation of anaerobic zones in the deep material, which would lead to an increase in the fermentation cycle. Furthermore, during the continuous fermentation process, the internal temperature of the fermentation chamber 41 rises. When the temperature exceeds 60°C, the self-regulating ventilation component 42 is gradually opened due to the heat, and cold air enters for circulation and cooling, dynamically controlling the temperature and maintaining the microorganisms in a highly active state.

[0078] In this embodiment, the rotating fermentation assembly 44 includes:

[0079] Filter cartridge 441 is disposed between fixed crossbars 43;

[0080] A fixed surface 442 is fixedly installed at one end of the filter cylinder 441 adjacent to the aging chamber 5, and the other end is rotatably provided with a feeding surface 444 that is fixedly connected to the material conveying channel 47.

[0081] The mixing shaft 443 passes through the center of the fixed surface 442 and the feed surface 444 at both ends, and is fixedly connected to the inner ring of the fixed bearing on the fixed crossbar 43.

[0082] In this embodiment, the mixing and stirring shaft 443 is rotatably connected to the center of the fixed surface 442 and the feed surface 444, and a spiral stirring blade is provided in the part inside the filter cylinder 441.

[0083] In other words, driven by the rotating component 46, the mixing and stirring shaft 443 and the filter cylinder 441 rotate in opposite directions. At this time, the fixed surface 442 rotates with the filter cylinder 441, and the feeding surface 444 remains fixed under the action of the conveying channel 47. This allows the material in the filter cylinder 441 to be fully mixed and stirred, promoting fermentation. Under the action of the filter cylinder 441, the fermented and decomposed fine particles are filtered out in time and fall onto the vibrating conveyor table 31, and then transported to the aging chamber 5.

[0084] In this embodiment, the rotating assembly 46 includes:

[0085] A rotating shaft 461 connects a drive motor 45 and a rotating fermentation assembly 44.

[0086] Rotating gear 462 is fixed on rotating shaft 461;

[0087] The transmission gear 463 meshes with the rotating gear 462 and is connected to the drive gear 464 via a shaft. The shaft is fixedly connected to the inner ring of the limiting bearing on the fixed crossbar 43.

[0088] The internal gear ring 465 is fixedly connected to the outer end of the filter cylinder 441 via the ring surface, and the internal teeth mesh with the drive gear 464.

[0089] In other words, driven by the drive motor 45, the rotating shaft 461 directly drives the mixing and stirring shaft 443 to rotate forward inside the filter cylinder 441. At the same time, the rotating gear 462 rotates forward, which in turn drives the transmission gear 463 and the drive gear 464 to rotate in reverse, and then drives the internal gear ring 465 to rotate in reverse. That is, the internal gear ring 465 drives the filter cylinder 441 to rotate in reverse, which is opposite to the mixing and stirring shaft 443. This fully mixes the large particles of material, prevents the material from accumulating and forming an anaerobic zone, and promotes the aerobic fermentation of the material.

[0090] In this embodiment, the self-adjusting ventilation component 42 includes:

[0091] The outer fixing cylinder 421 is fixed to the side wall of the fermentation chamber 41;

[0092] The fixing ring 422 is fixed to the inner side of the outer fixing cylinder 421 near the fermentation chamber 41 by the connecting ring surface 424;

[0093] The movable adjustment ring 423 is movably positioned at the end of the outer fixed cylinder 421 that is away from the fermentation chamber 41;

[0094] The expansion adjustment mechanism 425 is fixed on the inner wall of the outer fixed cylinder 421 and passes through the connecting ring surface 424, and is fixedly connected to the movable adjustment ring 423;

[0095] The flexible adjustment surface 426 is fixedly connected at both ends to the opposite ends of the fixed ring 422 and the movable adjustment ring 423, respectively.

[0096] In other words, during the fermentation process, the internal temperature of the fermentation chamber 41 continuously rises. At this time, the expansion regulating mechanism 425 expands under the action of high temperature, which in turn pushes the moving regulating ring 423 to move from the inside of the outer fixed cylinder 421 to the outside of the fermentation chamber 41. This pulls the flexible regulating surface 426 to unfold and fit against the inner wall of the outer fixed cylinder 421. As a result, the airflow channel between the fixed ring 422 and the moving regulating ring 423 becomes larger, increasing the airflow and circulating and cooling the inside of the fermentation chamber 41. After the temperature gradually decreases, the expansion regulating mechanism 425 contracts, causing the moving regulating ring 423 to reset. Under the action of the fixed ring 422, the flexible regulating surface 426 is squeezed, causing the flexible regulating surface 426 to partially block the airflow channel between the fixed ring 422 and the moving regulating ring 423, reducing the gas circulation flow and maintaining the internal temperature of the fermentation chamber 41.

[0097] In this embodiment, the expansion adjustment mechanism 425 includes:

[0098] Adjusting ring 4251 is fixed on the inner wall of outer fixed cylinder 421 and fixedly connected to fixed ring 422;

[0099] The movable annular surface 4252 is movable and set inside the adjusting ring body 4251;

[0100] The expansion material 4253 is disposed inside the adjusting ring body 4251 and is located on the side of the moving ring surface 4252 away from the fixed ring 422;

[0101] Multiple push shafts 4254 are arranged in a ring and are fixedly connected to the movable ring surface 4252. They also pass through the connecting ring surface 424 and are fixedly connected to the movable adjusting ring 423 by the fixing member 4256.

[0102] A compression spring 4255 is sleeved on the push shaft 4254 and located between the moving ring surface 4252 and the connecting ring surface 424.

[0103] In other words, during the fermentation process, the internal temperature of the fermentation chamber 41 continuously rises. At this time, the expansion material 4253 in the regulating ring 4251 of the expansion regulating mechanism 425 expands under high temperature, pushing the moving ring surface 4252 to move towards the moving regulating ring 423. Simultaneously, the pushing shaft 4254 pushes the moving regulating ring 423 from the inside of the outer fixed cylinder 421 to the outside of the fermentation chamber 41 through the fixing member 4256, and compresses the compression spring 4255. The moving regulating ring 423 pulls the flexible regulating surface 426 to unfold and fit against the inner wall of the outer fixed cylinder 421. As a result, the airflow channel between the fixed ring 422 and the moving regulating ring 423 becomes larger, increasing the airflow and circulating and cooling the inside of the fermentation chamber 41. After the temperature gradually decreases, the expansion material 4253 in the expansion regulating mechanism 425 expands. 3. Cooling and contraction: The compression spring 4255 rebounds and resets, driving the push shaft 4254 to move and reset via the moving ring surface 4252. This, in turn, drives the moving adjusting ring 423 to reset via the fixing component 4256. Under the action of the fixing ring 422, the soft adjusting surface 426 is compressed, partially blocking the airflow channel between the fixing ring 422 and the moving adjusting ring 423, reducing the gas circulation flow rate and maintaining the internal temperature of the fermentation chamber 41. The expansion material 4253 can be a shape memory alloy. Through composition (such as increasing nickel content) or heat treatment processes, the Af point (the austenite completion temperature is the temperature at which martensite in a shape memory alloy (SMA) completely transforms into austenite; during heating, when the temperature reaches the Af point, the alloy completely restores its high-temperature austenitic phase shape) is raised to 60°C.

[0104] In specific implementation, after the agricultural solid waste is initially crushed by the crushing and feeding device 2, the initially crushed agricultural solid waste material enters the filter cylinder 441 through the conveying channel 47 and the feeding surface 444 via the opening and closing channel at the top of the fixed frame 1 for aerobic fermentation. During the fermentation process, the vibration motor 33 starts and continuously vibrates the vibration conveying table 31, while the opening and closing plate 32 remains closed. At the same time, the drive motor 45 drives the mixing and stirring shaft 443 and the filter cylinder 441 in the rotating fermentation component 44 to rotate in opposite directions via the rotating component 46. At this time, the fixed surface 442 rotates with the filter cylinder 441, and the feeding surface 444 remains fixed under the action of the conveying channel 47. The material inside the filter cylinder 441 is thoroughly mixed and stirred. Under the combined action of the vibrating conveyor 31 and the fermentation device 4, the material forms a fluidized bed state in the fermentation device 4 for continuous fermentation. Under the action of the filter cylinder 441, the fermented and decomposed fine particles are filtered out in time and fall onto the vibrating conveyor 31 and are transported to the aging chamber 5. The unfermented large particles continue to ferment in the rotating fermentation component 44. Under the action of vibration, the decomposed particles move towards the position of the opening and closing plate 32. After accumulating a certain amount on the vibrating conveyor 31, the opening and closing plate 32 opens, and the decomposed particles are transported to the aging chamber 5 for aging treatment. After aging, the material is discharged by the screw conveyor. During the fermentation process, the internal temperature of the fermentation chamber 41 continuously rises. At this time, the expansion material 4253 in the adjusting ring 4251 of the expansion adjusting mechanism 425 expands under high temperature, pushing the moving ring surface 4252 to move towards the moving adjusting ring 423. Simultaneously, the pushing shaft 4254 pushes the moving adjusting ring 423 from the inside of the outer fixed cylinder 421 to the outside of the fermentation chamber 41 through the fixing member 4256, and compresses the compression spring 4255. The moving adjusting ring 423 pulls the soft adjusting surface 426 to unfold and fit against the inner wall of the outer fixed cylinder 421, thereby changing the airflow channel between the fixed ring 422 and the moving adjusting ring 423. The increased airflow circulates and cools the interior of the fermentation chamber 41. As the temperature gradually decreases, the expansion material 4253 in the expansion regulating mechanism 425 cools and contracts, causing the compression spring 4255 to rebound and reset. This, in turn, drives the push shaft 4254 to move and reset via the moving ring surface 4252, which in turn drives the moving regulating ring 423 to reset via the fixing member 4256. Under the action of the fixing ring 422, the soft regulating surface 426 is squeezed, causing it to partially block the airflow channel between the fixing ring 422 and the moving regulating ring 423, reducing the gas circulation flow, maintaining the temperature inside the fermentation chamber 41, and keeping the microorganisms in a highly active state.

[0105] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An aerobic fermentation device for agricultural solid waste, characterized in that: The utility model relates to a fermentation device, including: Fixed frame (1);Four sides are equipped with ventilation window (11), top is equipped with open and close passageway; Crushing feeder (2) is fixed in the top of fixed frame (1), and the bottom output port corresponds with the top open and close passageway of fixed frame (1); Vibration device (3), top fixed in fixed frame (1) top plane inner side; Fermentation device (4) is fixed in vibration device (3); Aging cavity (5) is fixed in the lower part of fixed frame (1), and the top corresponds with vibration device (3); The vibration device (3) includes: Vibration conveying table (31) is arranged obliquely, and the low end corresponds with aging cavity (5), and is fixedly connected with the inner side of fixed frame (1) top plane through a plurality of elastic buffers (34); Open and close board (32) is movably arranged in one end of vibration conveying table (31) corresponding with aging cavity (5); Vibration motor (33) is arranged obliquely and is fixed in the bottom side of vibration conveying table (31); The fermentation device (4) includes: Fermentation cavity (41) is enclosed and fixed on vibration conveying table (31); Self-adjusting ventilation assembly (42) is symmetrically distributed with two groups, and each group is provided with a plurality of self-adjusting ventilation assemblies along the conveying direction of vibration conveying table (31) and is fixed on the cavity wall of fermentation cavity (41); Fixed cross bar (43) is arranged along vibration conveying table (31) and is fixed on vibration conveying table (31), and fixed bearings are arranged on the fixed cross bar (43), and a limiting bearing is further arranged on the fixed cross bar (43) away from aging cavity (5); Rotary fermentation assembly (44) is fixed on the inner ring of fixed bearing of fixed cross bar (43) at both ends; Driving motor (45) is fixed on the end of vibration conveying table (31) away from aging cavity (5); Rotary assembly (46) is connected with driving motor (45) and rotary fermentation assembly (44); Material conveying channel (47) is fixed on one end of rotary fermentation assembly (44) adjacent to rotary assembly (46) and is fixedly connected with the open and close passageway of the top of fixed frame (1); The self-adjusting ventilation assembly (42) includes: Outer fixed cylinder (421) is fixed on the side wall of fermentation cavity (41); Fixed ring (422) is fixed on the inner side of outer fixed cylinder (421) close to fermentation cavity (41) through connecting ring face (424); Mobile adjusting ring (423) is movably arranged on the end of outer fixed cylinder (421) away from fermentation cavity (41); Expansion adjusting mechanism (425) is fixed on the inner wall of outer fixed cylinder (421) and is fixedly connected with mobile adjusting ring (423) through connecting ring face (424); Soft adjusting surface (426) is fixedly connected on the opposite ends of fixed ring (422) and mobile adjusting ring (423) respectively.

2. The agricultural solid waste aerobic fermentation device according to claim 1, characterized in that: The rotary fermentation assembly (44) includes: Filter cylinder (441) is arranged between fixed cross bar (43); Fixed surface (442) is fixedly arranged on one end of filter cylinder (441) adjacent to aging cavity (5), and the other end is rotatably provided with feeding surface (444) fixedly connected with material conveying channel (47); The mixed stirring shaft (443) is rotatably connected with the center of the fixed surface (442) and the feeding surface (444), and the part inside the filter cylinder (441) is provided with helical stirring blades.

3. The agricultural solid waste aerobic fermentation device according to claim 2, characterized in that: The rotating assembly (46) comprises:

4. The agricultural solid waste aerobic fermentation device according to claim 1, characterized in that: A rotating shaft (461) connected with the driving motor (45) and the rotating fermentation assembly (44); A rotating gear (462) fixed on the rotating shaft (461); A transmission gear (463) engaged with the rotating gear (462) and connected with the driving gear (464) through a shaft body fixedly connected with the inner ring of the limiting bearing on the fixed cross bar (43); An inner tooth ring (465) fixedly connected with the outer side of the end of the filter cylinder (441) through a ring surface, and the inner teeth are engaged with the driving gear (464). The expansion adjusting mechanism (425) comprises:

5. The agricultural solid waste aerobic fermentation device according to claim 1, characterized in that: An adjusting ring body (4251) fixed on the inner wall of the outer fixed cylinder (421) and fixedly connected with the fixed ring (422); A moving ring surface (4252) movably arranged inside the adjusting ring body (4251); An expansion material (4253) arranged in the adjusting ring body (4251) and located on the side away from the fixed ring (422) of the moving ring surface (4252); A plurality of push shafts (4254) annularly distributed, fixedly connected with the moving ring surface (4252), and fixedly connected with the moving adjusting ring (423) through the connecting ring surface (424) and the fixed part (4256); A compression spring (4255) sleeved on the push shaft (4254) and located between the moving ring surface (4252) and the connecting ring surface (424). ​

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