Aerobic fermentation system

Abstract

The utility model relates to the technical field of organic solid waste treatment, in particular to an aerobic fermentation system. The aerobic fermentation system comprises a fermentation device, a water pump, an aeration unit, a heat pipe unit and a heat recovery unit, the aeration unit is used for providing air required by fermentation for materials in the fermentation device, the heat pipe unit is used for exchanging heat with the fermentation device, and the water pump is communicated with the heat recovery unit to provide normal-temperature water for the heat recovery unit; high-temperature steam generated by fermentation of the fermentation device enters the heat recovery unit, the heat recovery unit is used for performing heat exchange on the high-temperature steam and normal-temperature water to form high-temperature water and air, the high-temperature water enters the heat pipe unit, and the air enters the aeration unit. Thus, heat generated by fermentation in the fermentation device is recycled, heat waste in the fermentation process is avoided, meanwhile, the fermentation efficiency is improved by arranging the heat pipe unit, and then the treatment efficiency of organic solid waste is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solid waste treatment, in particular to an aerobic fermentation system. Background Art

[0002] With the development of agriculture and animal husbandry, a large amount of organic solid waste such as livestock and poultry manure, crop straw, etc. is generated. If these solid wastes are not effectively treated, they will not only cause environmental pollution, but also waste the biomass energy contained therein. Traditional methods of organic solid waste treatment, such as composting, often have problems such as low treatment efficiency, high labor intensity, and low energy recovery rate. High-temperature thermophilic bacteria use organic solid waste as raw materials, and have the advantages of high degree of fermentation product reduction, high degree of resource utilization, and low operating costs. During the fermentation process, the temperature of high-temperature steam can reach above 120°C, and the heat contained therein is often wasted. Moreover, this heat loss is not enough to affect the ultra-high temperature aerobic fermentation process.

[0003] Therefore, there is an urgent need for a fermentation system that can efficiently treat organic solid waste and recover its energy. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides an aerobic fermentation system, which solves the technical problems of low efficiency in treating organic solid waste and heat waste during the fermentation process.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model embodiment provides an aerobic fermentation system, including a fermentation device, a water pump, an aeration unit, a heat pipe unit and a heat recovery unit; the water pump and the heat recovery unit are both arranged outside the fermentation device, and the aeration unit and the heat pipe unit are arranged inside the fermentation device; the aeration unit is used to provide the air required for fermentation for the materials in the fermentation device, and the heat pipe unit is used to exchange heat with the fermentation device; the water pump is connected to the heat recovery unit to provide normal temperature water for the heat recovery unit, and the high-temperature steam generated by the fermentation of the fermentation device enters the heat recovery unit, and the heat recovery unit is used to form high-temperature water and air after heat exchange between the high-temperature steam and the normal-temperature water, and the high-temperature water enters the heat pipe unit, and the air enters the aeration unit.

[0009] Preferably, the heat recovery unit includes a heat exchanger and a water vapor separator; the water pump is connected to the water inlet of the heat exchanger, the air outlet of the fermentation device is connected to the air inlet of the heat exchanger, the air outlet of the heat exchanger is connected to the inlet of the water vapor separator, and the water outlet of the heat exchanger is connected to the heat pipe unit; the water outlet of the water vapor separator is connected to the heat pipe unit, and the air outlet of the water vapor separator is connected to the aeration unit; the fermentation device produces high-temperature steam which enters the heat exchanger to heat the normal-temperature water provided by the water pump to form high-temperature water, and the high-temperature steam forms a gas-liquid mixture after heat exchange in the heat exchanger, and is separated by the water vapor separator to form condensed water and air, and the condensed water and high-temperature water enter the heat pipe unit, and the separated air enters the aeration unit.

[0010] Preferably, the aeration unit comprises a plurality of interconnected aeration pipes and a blower for providing gas to the aeration pipes; the air outlets of the blower and the water vapor separator are both connected to the aeration pipes.

[0011] Preferably, the heat pipe unit is a plurality of interconnected heat pipes arranged in the side wall of the fermentation device.

[0012] Preferably, the fermentation device includes a fermentation bin, a stirring mechanism arranged in the fermentation bin, and a moving mechanism that drives the stirring mechanism to move horizontally; the stirring mechanism is used to stir the mixed materials in the fermentation bin; the aeration unit is located at the inner bottom end of the fermentation bin, and the heat pipe unit is located in the side wall of the fermentation bin.

[0013] Preferably, the side wall of the fermentation bin comprises a stainless steel plate, a heat pipe unit, a heat insulation layer and a corrugated plate which are arranged in sequence from the inside to the outside.

[0014] Preferably, the movable mechanism includes a second movable unit and two first movable units; the two first movable units are arranged on the side walls of the fermentation bin opposite to each other and along the length direction of the fermentation bin, and the second movable unit is arranged along the width direction of the fermentation bin; the movable parts of the two first movable units are respectively connected to the two ends of the fixed part of the second movable unit to drive the second movable unit to move along the length direction of the fermentation bin; the movable part of the second movable unit is connected to the stirring mechanism to drive the stirring mechanism to move along the width direction of the fermentation bin.

[0015] Preferably, the first movable unit includes a first power member fixed to the fermentation bin, a first transmission chain arranged along the length direction of the fermentation bin, and a first movable plate arranged on the first transmission chain, the first power member drives the first transmission chain to rotate to drive the first movable plate to move along the length direction of the fermentation bin, and the first movable plate is a movable part of the first movable unit; the second movable unit includes a connecting plate connected to the first movable plates of the two first movable units at both ends, a second power member arranged on the connecting plate, a second transmission chain arranged along the width direction of the fermentation bin, and a second movable plate arranged on the second transmission chain, the stirring mechanism is connected to the second movable plate, the second power member drives the second transmission chain to rotate to drive the stirring mechanism on the second movable plate to move along the width direction of the fermentation bin, the connecting plate is the fixed part of the second movable unit, and the second movable plate is the moving part of the second movable unit.

[0016] Preferably, the stirring mechanism comprises a driving member and a stirring paddle; the output end of the driving member is connected to the stirring paddle; the stirring paddle is provided with spiral blades, and the spacing between two adjacent circles of the spiral blades decreases from top to bottom.

[0017] Preferably, it also includes a mixing device and a conveying device; the mixing device is used to mix the materials; and the conveying device is used to convey the mixed materials to the fermentation bin of the fermentation device.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The aerobic fermentation system of the utility model comprises a fermentation device and a heat recovery unit. The heat recovery unit is used for utilizing high-temperature steam generated during fermentation in the fermentation device. The high-temperature steam enters the heat recovery unit to heat the normal-temperature water provided by a water pump to form high-temperature water. The high-temperature steam forms a gas-liquid mixture after heat exchange in the heat recovery unit, which is separated to form condensed water and air. The condensed water is mixed with the high-temperature water to form water with the heat required by the fermentation device, which enters the heat pipe unit. The heat pipe unit is used for providing the required temperature in the fermentation device. The air enters the aeration unit to provide gas therefor, thereby realizing the recycling of heat generated by fermentation in the fermentation device and avoiding heat waste in the fermentation process. At the same time, the fermentation efficiency is improved by arranging the heat pipe unit, thereby improving the treatment efficiency of organic solid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front cross-sectional view of the aerobic fermentation system of the utility model;

[0022] Figure 2 It is a schematic diagram of heat recovery of a heat recovery unit;

[0023] Figure 3 It is a structural schematic diagram of a fermentation device;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure of the stirring mechanism.

[0025] [Description of Reference Numerals]

[0026] 1: Mixing device;

[0027] 2: Conveying device;

[0028] 3: fermentation device; 31: fermentation chamber; 32: stirring mechanism; 321: driving member; 322: stirring paddle; 33: moving mechanism; 331: first moving unit; 3311: first power member; 3312: first transmission chain; 3313: first moving plate; 3314: first driven member; 332: second moving unit; 3321: connecting plate; 3322: second power member; 3323: second transmission chain; 3324: second moving plate; 3325: second driven member;

[0029] 4: Water pump;

[0030] 5: heat recovery unit; 51: heat exchanger; 52: water vapor separator;

[0031] 6: aeration unit; 61: aeration pipe; 62: blower;

[0032] 7: Heat pipe unit. DETAILED DESCRIPTION

[0033] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0034] like Figure 1 As shown, this embodiment provides an aerobic fermentation system, which includes a mixing device 1, a conveying device 2, a fermentation device 3, a water pump 4, an aeration unit 6, a heat pipe unit 7 and a heat recovery unit 5. The mixing device 1 is used to mix the materials, and the conveying device 2 is used to convey the mixed materials to the fermentation bin 31 of the fermentation device 3.

[0035] The water pump 4 and the heat recovery unit 5 are both arranged outside the fermentation device 3, and the aeration unit 6 and the heat pipe unit 7 are arranged inside the fermentation device 3. The aeration unit 6 is used to provide the materials in the fermentation device 3 with air required for fermentation, and the water pump 4 is connected with the heat recovery unit 5 to provide normal temperature water for the heat recovery unit 5. The high temperature steam generated by the fermentation of the fermentation device 3 enters the heat recovery unit 5, and the heat recovery unit 5 is used to form high temperature water and air after heat exchange between the high temperature steam and the normal temperature water, and the high temperature water enters the heat pipe unit 7, and the air enters the aeration unit 6.

[0036] The aerobic fermentation system provided in this embodiment includes a fermentation device 3 and a heat recovery unit 5. The heat recovery unit 5 is used to utilize the high-temperature steam generated during fermentation in the fermentation device 3. The high-temperature steam enters the heat recovery unit 5 to heat the normal-temperature water provided by the water pump 4 to form high-temperature water. The high-temperature steam forms a gas-liquid mixture after heat exchange through the heat recovery unit 5, which is separated to form condensed water and air. The condensed water and the high-temperature water are mixed to form water with the required temperature for the fermentation device 3, which enters the heat pipe unit 7. The heat pipe unit 7 is used to provide the required temperature in the fermentation device 3. The air enters the aeration unit 6 to provide gas therefor, thereby realizing the recycling of the heat generated by the fermentation in the fermentation device 3 and avoiding the waste of heat during the fermentation process. At the same time, the fermentation efficiency is improved by setting the heat pipe unit 7, thereby improving the treatment efficiency of organic solid waste.

[0037] like Figure 2 As shown, the heat recovery unit 5 includes a heat exchanger 51 and a water vapor separator 52, the water pump 4 is connected to the water inlet of the heat exchanger 51, the air outlet of the fermentation device 3 is connected to the air inlet of the heat exchanger 51, the air outlet of the heat exchanger 51 is connected to the inlet of the water vapor separator 52, the water outlet of the heat exchanger 51 is connected to the heat pipe unit 7, the water outlet of the water vapor separator 52 is connected to the heat pipe unit 7, and the air outlet of the water vapor separator 52 is connected to the aeration unit 6. The fermentation device 3 produces high-temperature steam that enters the heat exchanger 51 to heat the normal-temperature water provided by the water pump 4 to form high-temperature water. The high-temperature steam is heat-exchanged in the heat exchanger 51 to form a gas-liquid mixture, which is separated by the water vapor separator 52 to form condensed water and air. The condensed water and the high-temperature water are mixed and enter the heat pipe unit 7, and the separated air enters the aeration unit 6. It should be noted that the condensed water and the high-temperature water are gathered in one pipe and then enter the heat pipe unit 7, and of course, they can also be passed into the heat pipe unit 7 separately. The heat exchanger 51 and the water vapor separator 52 are both existing technologies, and the principles of heat exchange and water vapor separation are not described in detail here.

[0038] In actual application, the aeration unit 6 includes a blower 62 and a plurality of connected aeration pipes 61. The blower 62 provides gas to the aeration pipes 61. The aeration pipes 61 are provided with a plurality of air outlets. The stack in the fermentation device 3 is located above the air outlet of the aeration pipes 61. The air outlets of the blower 62 and the water vapor separator 52 are both connected to the inlet of the aeration pipes 61. The heat pipe unit 7 is a plurality of connected heat pipes arranged in the side wall of the fermentation device 3. The heat exchanger 51 in the heat recovery unit 5 converts the high-temperature steam in the fermentation bin 31 into hot water and enters the heat pipe unit. It should be noted that the connection of the aeration pipes 61 and the aeration process are prior art and will not be described in detail here.

[0039] like Figure 3As shown, the fermentation device 3 includes a fermentation bin 31, a stirring mechanism 32 and a moving mechanism 33. The stirring mechanism 32 is arranged in the fermentation bin 31. The moving mechanism 33 can drive the stirring mechanism 32 to move horizontally. The stirring mechanism 32 is used to stir the mixed materials in the fermentation bin 31. The aeration unit 6 is located at the inner bottom of the fermentation bin 31, and the heat pipe unit 7 is located in the side wall of the fermentation bin 31. Among them, on the one hand, it prevents heat from being lost to the environment, and on the other hand, it enhances the heat exchange between the heat pipe unit 7 and the stack. The side wall of the fermentation bin 31 includes a stainless steel plate, a heat pipe unit 7, an insulation layer and a corrugated plate arranged in sequence from the inside to the outside. In this embodiment, the fermentation bin 31 is provided with windows and a roof, both of which are made of glass to improve the light transmittance in the fermentation bin 31, which is conducive to improving the fermentation efficiency.

[0040] The moving mechanism 33 includes a second moving unit 332 and two first moving units 331. The two first moving units 331 are opposite to each other and are arranged on the side wall of the fermentation bin 31 along the length direction of the fermentation bin 31. The second moving unit 332 is arranged along the width direction of the fermentation bin 31. The moving parts of the two first moving units 331 are respectively connected to the two ends of the fixed part of the second moving unit 332 to drive the second moving unit 332 to move along the length direction of the fermentation bin 31. The moving part of the second moving unit 332 is connected to the stirring mechanism 32 to drive the stirring mechanism 32 to move along the width direction of the fermentation bin 31. In this embodiment, by providing the first moving unit 331 and the second moving unit 332, the horizontal movement of the stirring mechanism 32 is realized, and the materials in the fermentation bin 31 can be fully turned over, wherein the length direction and the width direction are perpendicular.

[0041] Specifically, the first movable unit 331 includes a first power member 3311, a first transmission chain 3312, a first follower 3314 and a first movable plate 3313. The first transmission chain 3312 is a rotary chain. The first transmission chain 3312 is sleeved on the first power member 3311 and the first follower 3314. The fixed ends of the first power member 3311 and the first follower 3314 are fixed on the fermentation bin 31. The first transmission chain 3312 is arranged along the length direction of the fermentation bin 31. The first movable plate 3313 is arranged on the first transmission chain 3312. The rotary end of the first power member 3311 drives the first transmission chain 3312 to rotate to drive the first movable plate 3313 to move along the length direction of the fermentation bin 31.

[0042] The second mobile unit 332 includes a connecting plate 3321, a second power piece 3322, a second transmission chain 3323, a second driven piece 3325 and a second mobile plate 3324. The two ends of the connecting plate 3321 are respectively connected to the first mobile plates 3313 of the two first mobile units 331. The second transmission chain 3323 is a rotary chain. The second transmission chain 3323 is sleeved on the second power piece 3322 and the second driven piece 3325. The second power piece 3322 and the second driven piece 3325 are connected to each other. The fixed end of the moving member 3325 is arranged on the connecting plate 3321, the second transmission chain 3323 is arranged along the width direction of the fermentation bin 31, the second moving plate 3324 is arranged on the connecting plate 3321 and connected to the second transmission chain 3323, the stirring mechanism 32 is connected to the second moving plate 3324, and the rotating end of the second power member 3322 drives the second transmission chain 3323 to rotate so as to drive the stirring mechanism 32 on the second moving plate 3324 to move along the width direction of the fermentation bin 31. It should be noted that the first power members 3311 of the two first moving units 331 are turned on at the same time, the first transmission chain 3312 rotates, and the first moving plates 3313 on both sides move simultaneously and in parallel, thereby driving the second moving plate 3324 on the connecting plate 3321 connected to the second transmission chain 3323 to move along the length direction of the fermentation bin 31. When the second transmission chain 3323 rotates, the second moving plate 3324 moves along the width direction of the fermentation bin 31, thereby realizing the movement of the stirring mechanism 32 in two directions. The first moving plate 3313 is a moving part of the first moving unit 331 , the connecting plate 3321 is a fixing part of the second moving unit 332 , and the second moving plate 3324 is a moving part of the second moving unit 332 .

[0043] In order to ensure the stability of the movement of the first movable plate 3313 and the second movable plate 3324, a guide rail may be provided underneath.

[0044] Among them, the first power component 3311 and the second power component 3322 are both explosion-proof motors, which ensures that the explosion-proof motors will not be damaged by explosion due to the gas generated by the fermentation of organic solid waste during operation.

[0045] like Figure 4 As shown, the stirring mechanism 32 includes a driving member 321 and a stirring paddle 322. The output end of the driving member 321 is connected to the stirring paddle 322. The stirring paddle 322 is provided with a spiral blade. The spacing between two adjacent spiral blades decreases from top to bottom. Due to the friction caused by the infiltration of water and the weight of the organic solid waste when it is piled up, this structure allows the lower organic solid waste to be better stirred and fermented to ensure the looseness of the fermentation pile. The edge of the spiral blade is serrated, which is conducive to the crushing of the raw materials and can also protect the blade from breaking due to excessive torque. The shaft of the stirring paddle 322 adopts a hollow cylindrical structure, which can appropriately reduce the weight of the stirring device while completing the stirring task, and facilitate handling and loading.

[0046] The driving member 321 is connected to the stirring paddle 322 through a reducer. The driving member 321 is an explosion-proof motor. The reducer is a cycloidal pinwheel reducer, which has a large torque transmission capacity and a high transmission efficiency, and can ensure the accuracy and stability of the transmission.

[0047] In this embodiment, a PLC control unit is also included. The aeration unit 6, the moving unit, the stirring mechanism 32 and the heat recovery unit 5 are all electrically connected to the PLC control unit. The PLC control unit is used to control the aeration, movement, turning and heat recovery processes of the fermentation system.

[0048] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An aerobic fermentation system, characterized in that: It comprises a fermentation device (3), a water pump (4), an aeration unit (6), a heat pipe unit (7) and a heat recovery unit (5); The water pump (4) and the heat recovery unit (5) are both arranged outside the fermentation device (3), and the aeration unit (6) and the heat pipe unit (7) are arranged inside the fermentation device (3); The aeration unit (6) is used to provide the material in the fermentation device (3) with air required for fermentation, and the heat pipe unit (7) is used to exchange heat with the fermentation device (3); The water pump (4) is connected to the heat recovery unit (5) to provide normal temperature water for the heat recovery unit (5). The high temperature steam generated by the fermentation of the fermentation device (3) enters the heat recovery unit (5). The heat recovery unit (5) is used to form high temperature water and air after heat exchange between the high temperature steam and the normal temperature water. The high temperature water enters the heat pipe unit (7), and the air enters the aeration unit (6).

2. The aerobic fermentation system according to claim 1, characterized in that: The heat recovery unit (5) comprises a heat exchanger (51) and a water vapor separator (52); The water pump (4) is in communication with the water inlet of the heat exchanger (51), the air outlet of the fermentation device (3) is in communication with the air inlet of the heat exchanger (51), the air outlet of the heat exchanger (51) is in communication with the inlet of the water vapor separator (52), and the water outlet of the heat exchanger (51) is in communication with the heat pipe unit (7); The water outlet of the water vapor separator (52) is in communication with the heat pipe unit (7), and the air outlet of the water vapor separator (52) is in communication with the aeration unit (6); The high-temperature steam generated by fermentation in the fermentation device (3) enters the heat exchanger (51) to heat the normal-temperature water provided by the water pump (4) to form high-temperature water. The high-temperature steam is subjected to heat exchange in the heat exchanger (51) to form a gas-liquid mixture, which is separated by the water vapor separator (52) to form condensed water and the air. The condensed water and the high-temperature water enter the heat pipe unit (7), and the separated air enters the aeration unit (6).

3. The aerobic fermentation system according to claim 2, characterized in that: The aeration unit (6) comprises a plurality of interconnected aeration pipes (61) and a blower (62) for providing gas to the aeration pipes (61); The air outlets of the blower (62) and the water vapor separator (52) are both in communication with the aeration pipe (61).

4. The aerobic fermentation system according to claim 1, characterized in that: The heat pipe unit (7) is a plurality of interconnected heat pipes arranged in the side wall of the fermentation device (3).

5. The aerobic fermentation system according to claim 1, characterized in that: The fermentation device (3) comprises a fermentation bin (31), a stirring mechanism (32) disposed in the fermentation bin (31), and a moving mechanism (33) for driving the stirring mechanism (32) to move horizontally; The stirring mechanism (32) is used to stir the mixed materials in the fermentation bin (31); The aeration unit (6) is located at the inner bottom end of the fermentation bin (31), and the heat pipe unit (7) is located inside the side wall of the fermentation bin (31).

6. The aerobic fermentation system according to claim 5, characterized in that: The side wall of the fermentation bin (31) comprises a stainless steel plate, the heat pipe unit (7), a heat insulation layer and a corrugated plate which are arranged in sequence from the inside to the outside.

7. The aerobic fermentation system according to claim 5, characterized in that: The moving mechanism (33) comprises a second moving unit (332) and two first moving units (331); The two first movable units (331) are arranged on the side wall of the fermentation bin (31) opposite to each other and along the length direction of the fermentation bin (31), and the second movable unit (332) is arranged along the width direction of the fermentation bin (31); The moving parts of the two first moving units (331) are respectively connected to the two ends of the fixed part of the second moving unit (332) to drive the second moving unit (332) to move along the length direction of the fermentation bin (31); The moving part of the second moving unit (332) is connected to the stirring mechanism (32) to drive the stirring mechanism (32) to move along the width direction of the fermentation bin (31).

8. The aerobic fermentation system according to claim 7, characterized in that: The first moving unit (331) comprises a first power member (3311) fixed to the fermentation bin (31), a first transmission chain (3312) arranged along the length direction of the fermentation bin (31), and a first moving plate (3313) arranged on the first transmission chain (3312), the first power member (3311) drives the first transmission chain (3312) to rotate so as to drive the first moving plate (3313) to move along the length direction of the fermentation bin (31), and the first moving plate (3313) is the moving part of the first moving unit (331); The second movable unit (332) comprises a connecting plate (3321) whose two ends are respectively connected to the first movable plates (3313) of the two first movable units (331), a second power member (3322) arranged on the connecting plate (3321), a second transmission chain (3323) arranged along the width direction of the fermentation bin (31), and a second movable plate (3324) arranged on the second transmission chain (3323); the stirring mechanism (32) is connected to the second movable plate (3324); the second power member (3322) drives the second transmission chain (3323) to rotate so as to drive the stirring mechanism (32) on the second movable plate (3324) to move along the width direction of the fermentation bin (31); the connecting plate (3321) is a fixed part of the second movable unit (332); and the second movable plate (3324) is a movable part of the second movable unit (332).

9. The aerobic fermentation system according to claim 5, characterized in that: The stirring mechanism (32) comprises a driving member (321) and a stirring paddle (322); The output end of the driving member (321) is connected to the stirring paddle (322); The stirring paddle (322) is provided with spiral blades, and the spacing between two adjacent circles of the spiral blades decreases from top to bottom.

10. The aerobic fermentation system according to claim 5, characterized in that: It also includes a mixing device (1) and a conveying device (2); The mixing device (1) is used to mix materials; The conveying device (2) is used to convey the mixed materials to the fermentation bin (31) of the fermentation device (3).

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