A field straw aerobic composting system

Abstract

The utility model provides a kind of field straw aerobic composting system, belong to straw aerobic composting technical field. Including heap covering module, stirring module and control module.Heap covering module, including soft bottom water tank and heap cover, heap cover is located in soft bottom water tank, be provided with observation window on heap cover, the inner wall of heap cover is arranged with auxiliary material nozzle. Stirring module includes drive machine and stirring harrow, stirring harrow is inserted into the inside of heap cover, drive machine is electrically connected with stirring harrow. Control module includes controller and with its electrically connected thermometer, maturity rapid detector, carbon nitrogen ratio speed detector, cold air pipe, hot air transmission pipe and auxiliary material feed tank, thermometer and maturity rapid detector are installed on observation window, cold air pipe and hot air transmission pipe are respectively worn on heap cover, auxiliary material feed tank is connected with auxiliary material nozzle.Using the field straw aerobic composting system can solve the many defects of existing technology in field head mulching composting mode.

Description

Technical Field

[0001] This utility model relates to the field of aerobic composting technology for straw, and in particular to an aerobic composting system for straw in the field. Background Technology

[0002] The comprehensive utilization of straw mainly covers four directions: fertilizer, feed, energy, and substrate. Among them, fertilizer technology is the most widely used because it can effectively improve soil and continuously enhance agricultural productivity; while aerobic composting technology, as an important technical means to realize straw fertilizer, has significant advantages over other fertilizer technologies in terms of ease of operation, operating cost, and environmental friendliness.

[0003] In related technologies, traditional aerobic straw composting processes include composting in dedicated composting areas and mulched aerobic composting in fields. Mulched aerobic composting typically involves mixing pulverized straw with regulators and microbial agents, piling it into windrows in open fields, and covering the surface with a breathable, waterproof membrane. This membrane aims to insulate against heat and moisture, and prevent rain erosion. Theoretically, the pressure difference created by the temperature difference between the inside and outside of the membrane induces airflow within the compost, thus providing the necessary conditions for aerobic fermentation by microorganisms.

[0004] However, existing membrane-covered aerobic composting technology has revealed numerous shortcomings in practical applications. First, the cumbersome process of covering and removing the membrane leads to complex overall operation and high labor costs. Second, when turning the compost to improve aeration and promote uniform decomposition is required, the membrane must be completely removed, making turning extremely inconvenient, and frequent removal can damage the membrane. Third, the membrane completely obscures the compost pile, making it difficult for workers to visually observe key process parameters such as compost maturity, temperature, and humidity, hindering timely adjustments. Furthermore, the lack of an effective internal stirring or forced aeration mechanism easily leads to uneven mixing and localized anaerobic conditions within the compost pile, affecting the quality of the final product. Finally, accidental damage to the membrane during turning or during composting can easily cause concentrated leakage of odorous gases generated during the composting process, resulting in secondary pollution of the surrounding atmosphere and impacting residents' lives. Utility Model Content

[0005] This utility model provides an aerobic straw composting system for fields, which can solve many defects of existing field composting methods with mulch covering, such as complex operation, inconvenient turning, difficulty in observing the composting process, uneven mixing, and easy odor leakage. The technical solution is as follows: This utility model embodiment provides a field straw aerobic composting system, including: The stack body covering module includes a soft-bottom water tank and a stack body cover. The soft-bottom water tank is a sinking structure with an open top. The stack body cover is placed inside the soft-bottom water tank and together with the bottom of the soft-bottom water tank, defines the stack body space. The stack body cover is provided with an openable observation window, and auxiliary material nozzles are arranged on the inner wall of the stack body cover. The mixing module includes a drive motor and a mixing rake. The mixing rake extends into the inside of the pile cover, and the drive motor is located outside the pile cover and is electrically connected to the mixing rake. The control module includes a controller, a thermometer, a rapid decay maturity detector, a carbon-nitrogen ratio meter, a cold air inlet duct, a hot air transmission duct, and an auxiliary material feed tank. The thermometer and the rapid decay maturity detector are installed on the observation window with their probes located inside the stack cover and are communicatively connected to the controller. The cold air inlet duct and the hot air transmission duct are respectively installed on the stack cover. An air inlet fan is installed inside the cold air inlet duct, and an air outlet fan is installed inside the hot air transmission duct. The auxiliary material feed tank is connected to the auxiliary material nozzle via a solid-liquid mixing pump. The drive motor, the air inlet fan, the air outlet fan, and the solid-liquid mixing pump are all electrically connected to the controller.

[0006] Optionally, multiple auxiliary nozzles are provided and are evenly spaced on the inner wall of the stack cover.

[0007] Optionally, the stack cover has an auxiliary material layer, and the outlet of the solid-liquid mixing pump and the plurality of auxiliary material nozzles are all connected to the auxiliary material layer.

[0008] Optionally, the inner wall of the soft-bottom water tank is provided with a plurality of leachate inlet holes evenly spaced, and one end of the soft-bottom water tank is provided with an auxiliary material inlet pipe connecting the leachate inlet holes and the auxiliary material inlet tank.

[0009] Optionally, a leachate pump is provided on the auxiliary material feed pipe.

[0010] Optionally, multiple stack cover modules are arranged in a row, and the stack covers in the multiple stack cover modules are connected sequentially through the hot air transmission pipe.

[0011] Optionally, the hot air transmission pipe is connected to the top of the stack cover, and the cold air inlet pipe is connected to the bottom of the stack cover near the soft-bottom water tank.

[0012] Optionally, the stirring rake is connected to the drive motor via a telescopic mechanism.

[0013] Optionally, the height of the middle part of the bottom of the soft-bottomed water tank is higher than the height of the bottom edge.

[0014] Optionally, the thermometer is a multi-probe thermometer.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: The aerobic composting system for straw provided in this embodiment of the invention eliminates the need for constructing and selecting dedicated large-scale composting sites, thus solving the problems of large land area requirements and high land and transportation costs associated with existing aerobic straw composting methods. Furthermore, when applied to straw composting in fields, this system offers advantages such as simple operation, real-time turning and observation of the compost's condition, uniform mixing of straw and composting additives, and prevention of odor generation and leakage. It addresses the technical problems of existing field-covered composting methods, including complex operation, inconvenient turning, difficulty in observing the composting process, uneven mixing, and odor leakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an aerobic composting system for straw in the field provided by an embodiment of this utility model; Figure 2 This is a schematic diagram of the arrangement structure of an aerobic composting system for field straw provided by an embodiment of this utility model; Figure 3 This is a schematic diagram of the external structure of the stack cover module provided in this embodiment of the utility model; Figure 4 This is a structural cross-sectional view of the soft-bottom water tank provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the structure of the observation window provided in an embodiment of the present invention; Figure 6 This is a block diagram of the control structure of the control module in an embodiment of this utility model.

[0018] In the diagram: 1-Pile cover module; 1a-Pile space; 2-Mixing module; 3-Control module; 11-Soft bottom water tank; 12-Pile cover; 21-Drive motor; 22-Mixing rake; 31-Controller; 32-Thermometer; 33-Rapid decay tester; 34-Carbon-nitrogen ratio meter; 35-Cold air inlet pipe; 36-Hot air transmission pipe; 37-Auxiliary material feed tank; 111-Leachate inlet hole; 112-Auxiliary material feed pipe; 113-Leachate pump; 121-Observation window; 122-Auxiliary material nozzle; 123-Auxiliary material distribution interlayer; 211-Telescopic mechanism; 351-Inlet fan; 361-Outlet fan; 371-Solid-liquid mixing pump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of an aerobic composting system for straw in the field provided by an embodiment of this utility model; Figure 2 This is a schematic diagram of the arrangement structure of an aerobic composting system for field straw provided by an embodiment of this utility model; Figure 3 This is a schematic diagram of the external structure of the stack cover module provided in this embodiment of the utility model; Figure 4 This is a structural cross-sectional view of the soft-bottom water tank provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the structure of the observation window provided in an embodiment of the present invention; Figure 6 This is a block diagram of the control structure of the control module in an embodiment of this utility model. For example... Figures 1 to 6 As shown in the figure, this utility model embodiment provides a field straw aerobic composting system, including a pile covering module 1, a mixing module 2, and a control module 3.

[0021] The reactor body covering module 1 includes a soft-bottom water tank 11 and a reactor body cover 12. The soft-bottom water tank 11 is a top-opening submersible structure. The reactor body cover 12 is placed inside the soft-bottom water tank 11 and together with the bottom of the soft-bottom water tank 11, defines the reactor body space 1a. The reactor body cover 12 is provided with an openable and closable observation window 121, and auxiliary material nozzles 122 are arranged on the inner wall of the reactor body cover 12.

[0022] The mixing module 2 includes a drive motor 21 and a mixing rake 22. The mixing rake 22 extends into the inside of the stack cover 12, and the drive motor 21 is located outside the stack cover 12 and is electrically connected to the mixing rake 22.

[0023] The control module 3 includes a controller 31, a thermometer 32, a rapid decay maturity detector 33, a carbon-nitrogen ratio meter 34, a cold air inlet duct 35, a hot air transmission duct 36, and an auxiliary material feed tank 37. The thermometer 32 and the rapid decay maturity detector 33 are mounted on the observation window 121 with their probes located inside the stack cover 12, and are communicatively connected to the controller 31. The cold air inlet duct 35 and the hot air transmission duct 36 are respectively installed on the stack cover 12. An inlet fan 351 is installed inside the cold air inlet duct 35, and an outlet fan 361 is installed inside the hot air transmission duct 36. The auxiliary material feed tank 37 is connected to the auxiliary material nozzle 122 via a solid-liquid mixing pump 371. The drive motor 21, the inlet fan 351, the outlet fan 361, and the solid-liquid mixing pump 371 are all electrically connected to the controller 31.

[0024] In this embodiment of the invention, a soft-bottomed water trough 11 and a pile cover 12 are pre-planned according to the composting space in the field, and are manufactured to fit the size of the composting space. Pre-fabrication through pre-planning and then delivery to the target composting site reduces operational steps. During setup, an excavator or other machinery is used to dig a pit corresponding to the depth of the soft-bottomed water trough 11 at the selected composting site. The soft-bottomed water trough 11 is then placed in the pit, ensuring the top opening edge of the soft-bottomed water trough 11 is tightly fitted to the ground for positioning. After placing the straw pile in the middle of the soft-bottomed water trough 11, the pile cover 12 is placed inside the soft-bottomed water trough 11, thus defining a sealed pile space 1a together with the bottom of the soft-bottomed water trough 11, isolating the pile from the external environment. After the cover is installed and the mixing module 2 and other components in the control module 3 are connected and installed, a certain amount of water can be injected between the inner wall of the soft-bottom water tank 11 and the outer wall of the pile cover 12 to liquid seal the joint and prevent the bottom from gaps that could cause odor leakage during the composting process. Under the control of the controller 31, the auxiliary material feeding tank 37 can adjust the auxiliary materials such as microbial agents and urea into a solid-liquid mixture, and pump them to the end of the auxiliary material nozzle 122 inside the pile cover 12 via the solid-liquid mixing pump 371. The auxiliary materials are then sprayed onto the surface of the straw in the pile through the auxiliary material nozzle 122. Afterwards, the controller 31 controls the drive motor 21 to drive the mixing rake 22 to rotate, using the mixing rake 22 to turn the straw material and mix it evenly with water, microbial agents, and urea. The composting process then begins. During composting, thermometer 32 and rapid decomposition degree detector 33 monitor the temperature and decomposition degree of the compost pile in real time. When thermometer 32 detects that the temperature of the compost pile exceeds a certain value (e.g., above 60℃), controller 31 will control the drive motor 21 to start again, thereby causing the stirring rake 22 to start working, stirring the compost pile and releasing heat from inside the pile. At the same time, controller 31 will also control the opening of the inlet fan 351 and outlet fan 361, thereby introducing cold air through the cold air inlet pipe 35 and the hot air transmission pipe 36 to exhaust the hot air generated inside the compost pile and after heat exchange out of the compost pile space 1a, thereby allowing air circulation in the internal space of the compost pile cover 12, achieving the purpose of cooling, and at the same time providing oxygen needed for the growth of aerobic microorganisms in the compost pile. When the rapid decomposition degree detector 33 detects that the compost pile is fully decomposed, controller 31 will control the operation of the entire system to end. In addition, during the composting process, operators can intermittently sample through observation window 121 and use a carbon-nitrogen ratio rapid tester 34 installed on-site to detect the carbon-nitrogen ratio (C / N) of the compost pile. The carbon-nitrogen ratio rapid tester 34 is communicatively connected to the controller 31. The controller 31 acquires the carbon-nitrogen ratio detection results. When the carbon-nitrogen ratio is greater than the standard specification, the control system will start the auxiliary material feeding tank 37 and the solid-liquid mixing pump 371 to spray urea onto the compost pile, thereby adjusting the carbon-nitrogen ratio (C / N).Meanwhile, when the soft-bottomed water tank 11 is filled with rainwater or other water, the soft bottom will sink and fit tightly against the ground, further preventing gaps caused by uneven composting site ground, which could lead to odor leakage.

[0025] The aerobic composting system for straw provided in this embodiment of the invention eliminates the need for constructing and selecting dedicated large-scale composting sites, thus solving the problems of large land area requirements and high land and transportation costs associated with existing aerobic straw composting methods. Furthermore, when applied to straw composting in fields, this system offers advantages such as simple operation, real-time turning and observation of the compost's condition, uniform mixing of straw and composting additives, and prevention of odor generation and leakage. It addresses the technical problems of existing field-covered composting methods, including complex operation, inconvenient turning, difficulty in observing the composting process, uneven mixing, and odor leakage.

[0026] Optionally, multiple auxiliary material nozzles 122 are provided and evenly spaced on the inner wall of the pile cover 12. For example, in this embodiment of the invention, by evenly spaced multiple auxiliary material nozzles 122 facing the soft-bottom water tank 11 on the inner wall of the pile cover 12, auxiliary materials such as water, bacterial agents, and urea can be sprayed onto the pile within the pile cover module 1 from multiple angles, allowing the auxiliary materials to mix evenly and thoroughly with the pile, thereby improving the composting efficiency of the pile.

[0027] For example, in this embodiment of the utility model, the stack cover 12 is made of stainless steel and the soft-bottom water tank 11 is made of plastic.

[0028] Optionally, the stack cover 12 has an auxiliary material distribution layer 123 inside, and the outlet of the solid-liquid mixing pump 371 and multiple auxiliary material nozzles 122 are all connected to the auxiliary material distribution layer 123. Exemplarily, in this embodiment of the invention, the stack cover 12 is a sandwich structure with an internal space, and a hollow auxiliary material distribution layer 123 is provided between its inner and outer sides. Auxiliary materials such as water, bacterial agent, and urea pumped in by the solid-liquid mixing pump 371 first enter the auxiliary material distribution layer 123 through their corresponding inlets. After filling the auxiliary material distribution layer 123, they are directly sprayed onto the stack inside the stack cover module 1 through multiple auxiliary material nozzles 122. This structural design fully utilizes the internal space of the stack cover 12 in the thickness direction, reduces the corresponding pipeline structure arrangement, and improves operation and running efficiency.

[0029] Optionally, a plurality of leachate inlet holes 111 are evenly spaced on the inner wall of the soft-bottom water tank 11, and an auxiliary material feed pipe 112 connecting the leachate inlet holes 111 and the auxiliary material feed tank 37 is provided at one end of the soft-bottom water tank 11. Exemplarily, in this embodiment of the present invention, the interior of the soft-bottom water tank 11 is also a double-layer non-solid structure, with a hollow leachate-containing layer inside. The plurality of leachate inlet holes 111 provided on the inner wall of the soft-bottom water tank 11 communicate with the leachate-containing layer, and an auxiliary material feed pipe 112 correspondingly provided at the edge end of the soft-bottom water tank 11, with one end connected to the leachate-containing layer and the other end connected to the auxiliary material feed tank 37. When the composting material inside the composting material covering module 1 is sprayed with auxiliary materials and leachate is generated at the bottom, the leachate will flow into the leachate holding layer through the leachate inlet hole 111 on the inner wall of the soft bottom water tank 11, and finally flow back to the auxiliary material feeding tank through the auxiliary material feeding pipe 112 for recycling, so as to achieve multiple uses and reduce composting costs.

[0030] Optionally, a leachate pump 113 is provided on the auxiliary material feed pipe 112. Exemplarily, in this embodiment of the present invention, by providing a leachate pump 113 on the auxiliary material feed pipe 112, the leachate entering the auxiliary material feed pipe 112 from the soft-bottom water tank 11 is propelled to be smoothly pumped into the auxiliary material feed tank 37, thereby improving the recovery efficiency.

[0031] Optionally, multiple pile covering modules 1 are arranged in a row, and the pile covers 12 in the multiple pile covering modules 1 are connected sequentially by hot air transmission pipes 36. Exemplarily, in this embodiment of the present invention, the hot air transmission pipes 36 not only serve the function of air circulation in a single pile covering module 1, but also, when multiple pile covering modules 1 are arranged to achieve centralized and simultaneous composting, the heat in the previous pile covering module 1 is transferred to the next pile covering module 1 by the exhaust fan 361, so as to promote rapid heating of the pile in the next pile cover 12 while maintaining the surface temperature of the pile in the next pile cover 12, avoiding uneven temperature between the inside and outside of the pile, thereby increasing the straw decomposition rate.

[0032] Optionally, the hot air transmission pipe 36 is connected to the top of the compost pile cover 12, and the cold air inlet pipe 35 is connected to the bottom of the compost pile cover 12 near the soft-bottom water tank 11. Exemplarily, in this embodiment of the invention, on the one hand, the active microorganisms generate heat during composting, causing the air inside the pile to warm and become lighter. The hot air naturally rises and is discharged through the top hot air transmission pipe 36. On the other hand, the hot air discharged from the top creates a slight negative pressure inside the compost pile cover 12, which, in conjunction with the air intake fan 351, allows the cooler outside air to enter the bottom of the pile more smoothly from the bottom cold air inlet pipe 35. This forms an upward and downward convection circulation air path: hot air rises and is discharged, while cold air enters from the bottom, flowing upwards through the entire pile. This upward and downward ventilation structure establishes a favorable temperature gradient and airflow channel within the compost pile cover module 1. Because hot air is discharged from a higher position and cold air enters from the bottom, a gradient is maintained between a relatively high temperature at the top and a relatively low temperature at the bottom of the pile, which helps to continuously drive convection with thermal buoyancy. Fresh, cool air enters from the bottom and is gradually heated by the compost heat, rising to continuously provide oxygen to each layer of the pile and carrying away excess heat and moisture. The cool air enters along the bottom of the pile and flows upwards through the material, delivering oxygen to the core area of ​​the pile, while the hot, humid air generated within rises and exits through the top. This design is similar to the "chimney effect," achieving continuous ventilation without requiring a large amount of energy. It avoids the complete reliance on manual turning or mechanical blowing in traditional composting, significantly improving the uniformity and efficiency of airflow within the pile and reducing the power requirements of the intake fan 351 and the exhaust fan 361.

[0033] Optionally, the stirring rake 22 is connected to the drive motor 21 via a telescopic mechanism 211. Exemplarily, in this embodiment of the invention, the stirring rake 22 and the drive motor 21 are connected by a spring-shaped connecting pipe, or a telescopic mechanism 211 such as a cylinder rod or telescopic rod, allowing the stirring rake 22 to move freely within the pile cover 12 to a certain extent during rotational operation, thus achieving thorough stirring of the pile.

[0034] Optionally, the height of the middle part of the bottom of the soft-bottom water tank 11 is higher than the height of the bottom edge. For example, in this embodiment of the invention, when excavating the pit, it can be excavated into a shape that is higher in the middle and lower around the edges. After placing the soft-bottom water tank 11, the height of the middle part of the bottom of the soft-bottom water tank 11 is higher than the height of the bottom edge. During composting, if leachate flows out, it will flow along the aforementioned slope of the soft-bottom water tank 11 to the surrounding area, and then enter the leachate-containing layer inside the soft-bottom water tank 11 through the leachate inlet hole 111 at the bottom of the soft-bottom water tank 11, and further transported to the auxiliary material feed tank 37 for recycling.

[0035] Optionally, the thermometer 32 is a multi-probe thermometer. For example, in this embodiment of the invention, the thermometer 32 is equipped with multiple probes extending into the stack cover 12, thereby enabling multi-point temperature measurement of various locations within the stack and improving the accuracy of temperature detection.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aerobic composting system for straw in the field, characterized in that, include: The stack body covering module (1) includes a soft-bottom water tank (11) and a stack body cover (12). The soft-bottom water tank (11) is a sinking structure with an open top. The stack body cover (12) is placed inside the soft-bottom water tank (11) and together with the bottom of the soft-bottom water tank (11), it defines the stack body space (1a). The stack body cover (12) is provided with an openable observation window (121). The inner wall of the stack body cover (12) is provided with auxiliary material nozzles (122). The mixing module (2) includes a drive motor (21) and a mixing rake (22). The mixing rake (22) extends into the inside of the pile cover (12), and the drive motor (21) is located outside the pile cover (12) and is electrically connected to the mixing rake (22). The control module (3) includes a controller (31), a thermometer (32), a rapid decay tester (33), a carbon-nitrogen ratio meter (34), a cold air inlet duct (35), a hot air transmission duct (36), and an auxiliary material feed tank (37). The thermometer (32) and the rapid decay tester (33) are installed on the observation window (121) and their probes are located inside the pile cover (12), and are communicatively connected to the controller (31). The cold air inlet duct (35) and the hot air transmission duct... (36) are respectively installed on the stack cover (12). The cold air inlet pipe (35) is equipped with an air inlet fan (351), and the hot air transmission pipe (36) is equipped with an air outlet fan (361). The auxiliary material feed tank (37) is connected to the auxiliary material nozzle (122) through the solid-liquid mixing pump (371). The drive motor (21), the air inlet fan (351), the air outlet fan (361), and the solid-liquid mixing pump (371) are all electrically connected to the controller (31).

2. The field straw aerobic composting system according to claim 1, characterized in that, Multiple auxiliary material nozzles (122) are provided and are evenly spaced on the inner wall of the stack cover (12).

3. The field straw aerobic composting system according to claim 2, characterized in that, The stack cover (12) has an auxiliary material fabric interlayer (123) inside, and the outlet of the solid-liquid mixing pump (371) and the multiple auxiliary material nozzles (122) are all connected to the auxiliary material fabric interlayer (123).

4. The field straw aerobic composting system according to claim 1, characterized in that, The inner wall of the soft-bottom water tank (11) is provided with a plurality of leachate inlet holes (111) evenly spaced. One end of the soft-bottom water tank (11) is provided with an auxiliary material feed pipe (112) connecting the leachate inlet hole (111) and the auxiliary material feed tank (37).

5. The field straw aerobic composting system according to claim 4, characterized in that, A percolate pump (113) is installed on the auxiliary material feed pipe (112).

6. A field straw aerobic composting system according to any one of claims 1 to 5, characterized in that, Multiple stack body covering modules (1) are arranged in a row, and the stack body cover (12) in the multiple stack body covering modules (1) are connected in sequence through the hot air transmission pipe (36).

7. The field straw aerobic composting system according to claim 6, characterized in that, The hot air transmission pipe (36) is connected to the top of the stack cover (12), and the cold air inlet pipe (35) is connected to the bottom of the stack cover (12) near the soft bottom water tank (11).

8. A field straw aerobic composting system according to any one of claims 1 to 5, characterized in that, The stirring rake (22) is connected to the drive motor (21) via a telescopic mechanism (211).

9. A field straw aerobic composting system according to any one of claims 1 to 5, characterized in that, The height of the middle part of the bottom of the soft-bottomed water tank (11) is higher than the height of the bottom edge.

10. A field straw aerobic composting system according to any one of claims 1 to 5, characterized in that, The thermometer (32) is a multi-probe thermometer.

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