An unpowered, ventilated composting device

Abstract

The utility model belongs to composting equipment technical field provides a kind of unpowered ventilation composting device, including first composting box, first composting box is fixedly connected with inclined plate in, and inclined plate and first composting box form composting chamber between, and first composting box is provided with the air inlet assembly that communicates with composting chamber;Second composting box, vertical fixed connection has chimney component in second composting box, the air inlet end of chimney component is located in second composting box, the air outlet end of chimney component is located at the outside of second composting box, length adjusting piece is provided in chimney component, length adjusting piece is used to adjust the distance between the air inlet end and air outlet end of chimney component, between second composting box, first composting box, it is obliquely provided with several ventilation components, and the low end of ventilation component communicates with composting chamber, and the high end of ventilation component communicates with second composting box inside.The utility model is based on chimney effect and temperature difference drive, improves the air flow speed in unpowered ventilation composting device and improves ventilation stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of composting equipment, and in particular relates to a non-powered ventilated composting device. Background Technology

[0002] Composting is an important means of treating organic waste and realizing its resource utilization. Based on the different oxygen content and oxygen supply methods during the composting process, composting technology can be mainly divided into anaerobic composting, facultative anaerobic composting, and aerobic composting. Among them, facultative anaerobic composting and aerobic composting have become the mainstream due to their processing efficiency and application scope.

[0003] Aerobic composting relies on equipment such as blowers for forced ventilation, and rapidly decomposes organic matter through the vigorous activity of microorganisms. Its advantages are high decomposition efficiency and short cycle. However, this method also has significant drawbacks: it requires a continuous power supply, and the supporting aeration and control systems result in high investment costs and operating energy consumption, as well as complex operation and maintenance, which to some extent limits its promotion and application in economically underdeveloped areas or decentralized treatment scenarios.

[0004] Compared to aerobic composting, facultative anaerobic composting (often called non-powered aerated composting) exhibits unique advantages. It typically operates under open or semi-open conditions, utilizing natural ventilation for fermentation without the need for additional mechanical aeration equipment. This results in low investment costs, ease of operation, and virtually zero energy consumption, aligning better with low-carbon and energy-saving environmental principles. However, traditional non-powered aerated composting technology has a fatal weakness: its ventilation effect is entirely dependent on natural conditions, leading to extremely poor stability. The driving force of the composting process—the chimney effect—is strongly affected by external factors such as ambient wind speed, diurnal temperature variations, and seasonal changes. Insufficient ventilation leads to anaerobic conditions within the compost pile, producing foul odors and prolonging the composting time; conversely, excessive ventilation causes rapid heat loss, making temperature maintenance difficult and negatively impacting microbial activity and processing efficiency. This uncontrollability makes the composting effect unpredictable and unreliable, resulting in significant fluctuations in product quality.

[0005] To overcome the shortcomings of traditional non-powered composting, some improvements have emerged in existing technologies. For example, attempts have been made to manually adjust the size of the vents by introducing simple dampers or baffles. However, these methods suffer from low adjustment precision, slow response, and an inability to provide timely feedback on real-time changes in temperature and oxygen demand within the compost pile. They also exhibit low automation and limited improvement in effectiveness. Another approach is to revert to aerobic composting by adding small fans to facultative anoxic composting devices. However, this negates the core advantage of being "non-powered," inevitably increasing energy consumption and system complexity.

[0006] Therefore, there is an urgent need in this field for an innovative solution that can retain the fundamental advantages of traditional non-powered composting structures, such as simple structure and zero-energy operation, while effectively overcoming its inherent defect of unstable ventilation, and achieving intelligent and adaptive adjustment of the composting ventilation process, thereby ensuring compost quality while truly achieving low-cost and maintenance-free operation. Utility Model Content

[0007] The purpose of this invention is to provide a non-powered ventilated composting device to solve the above-mentioned problems, thereby enhancing airflow and improving ventilation stability.

[0008] To achieve the above objectives, this utility model provides the following solution: a non-powered ventilated composting device, comprising: A first compost bin, wherein an inclined plate is fixedly connected inside the first compost bin, and a composting chamber is formed between the inclined plate and the first compost bin, and an air intake component communicating with the composting chamber is provided on the first compost bin; A second compost bin is provided, with a chimney assembly vertically fixed inside. The air inlet of the chimney assembly is located inside the second compost bin, and the air outlet is located outside the second compost bin. A length adjustment component is provided inside the chimney assembly to adjust the distance between the air inlet and outlet. Several ventilation components are inclinedly arranged between the second compost bin and the first compost bin. The lower end of the ventilation components communicates with the composting chamber, and the upper end of the ventilation components communicates with the interior of the second compost bin.

[0009] Preferably, the air intake assembly includes a plurality of air intake holes opened on the side wall of the first compost bin away from the compost chamber and a plurality of ventilation holes opened on the inclined plate, and the compost chamber is connected to the outside through the plurality of ventilation holes and air intake holes.

[0010] Preferably, the ventilation assembly includes an inclined ventilation pipe, the lower end of which is fixedly connected to the side wall of the first composting box away from the air inlet, and the lower end of which communicates with the composting chamber; the upper end of which is fixedly connected to the side wall of the second composting box, and the upper end of which communicates with the interior of the second composting box. The vent pipe is connected to a gas valve and a gas flow meter.

[0011] Preferably, the chimney assembly includes an outer chimney, which is vertically fixedly connected to the second compost bin. The bottom sidewall of the outer chimney has several air holes. An inner chimney is slidably connected to the top opening of the outer chimney. The top of the inner chimney extends upward through the top of the second compost bin. The length adjustment member is disposed between the inner chimney and the outer chimney.

[0012] Preferably, the length adjusting component includes a rack vertically fixedly connected to the side wall of the inner chimney, a clearance groove vertically formed on the inner wall of the outer chimney, the rack being slidably connected in the clearance groove, a housing fixedly connected to the top of the side wall of the outer chimney, a motor fixedly connected inside the housing, a gear fixedly sleeved on the output shaft of the motor, the gear passing through the housing and the clearance groove and meshing with the rack.

[0013] Preferably, the bottom inner side of the inner chimney is detachably connected to a fixing ring via a limiting member, and an activated carbon block for removing odors from the escaping gas is fixedly connected inside the fixing ring.

[0014] The limiting component includes several fixing plates fixedly connected to the side wall of the fixing ring and several slots opened at the bottom of the inner chimney. The fixing plates are respectively adapted to the slots. The bottom of the inner chimney is rotatably connected to several baffles, and the baffles are respectively attached to the bottom of the fixing plates.

[0015] Preferably, a plurality of second through holes are respectively provided on the side wall of the first compost bin and the side wall of the second compost bin. A water spray pipe is slidably connected in the second through hole. A baffle is fixedly connected to one end of the water spray pipe. The baffle is in contact with the outer wall of the first compost bin or the second compost bin. A plurality of water spray holes are provided on the side wall of the other end of the water spray pipe. The ends of the plurality of water spray pipes near the baffle are connected to a water supply device through hoses.

[0016] Preferably, the bottom of the first composting box and the second composting box are respectively fixedly connected to a water collection tank, and the bottom of the first composting box and the second composting box are respectively provided with a plurality of vent holes, the vent holes being connected to the water collection tank, and a drain valve being connected to the bottom of one side wall of the water collection tank.

[0017] Preferably, thermocouples are installed in the first compost bin and the second compost bin, and the thermocouples are used to detect the temperature of the organic matter in the first compost bin and the second compost bin.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: Overall, the present invention sets up a first composting box and a second composting box connected in series, and places compost of different stages in the first composting box and the second composting box, and uses the temperature difference between the two boxes to realize the flow of air from the first composting box to the second composting box. At the same time, by setting up a chimney assembly in the second composting box, the chimney effect is used to make the air in the second composting box flow out quickly, further improving the air circulation speed.

[0019] This invention combines the chimney effect and the temperature difference effect to achieve unpowered ventilation, resulting in faster airflow and higher ventilation efficiency. At the same time, the combination of the chimney effect and the temperature difference effect reduces dependence on wind speed, temperature, and other environmental factors, making the ventilation effect more stable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0021] Figure 1 This is a schematic diagram of the composting device of this utility model; Figure 2 This is a cross-sectional schematic diagram of the composting device of this utility model; Figure 3 This is a schematic diagram of the length adjustment component of this utility model; Figure 4 This is a bottom view of the inner chimney of this utility model; Figure 5 This is a schematic diagram showing the connection between the slide and the second cover of this utility model; The components are as follows: 1. First compost bin; 2. Second compost bin; 3. First cover; 4. Second cover; 5. Inner chimney; 6. Ventilation pipe; 7. Air inlet; 8. Ventilation hole; 9. Air vent; 10. Water collection tank; 11. Drain valve; 12. Sprinkler pipe; 13. Baffle; 14. First through hole; 15. Second through hole; 16. Thermocouple; 17. Outer shell; 18. Outer chimney; 19. Air valve; 20. Gas flow meter; 21. Air hole; 22. Inclined plate; 23. Gear; 24. Rack; 25. Clearance groove; 26. Fixing ring; 27. Activated carbon block; 28. Fixing plate; 29. ​​Slot; 30. Stop bar; 31. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: Reference Figures 1-5 This utility model provides a non-powered ventilated composting device, comprising: The first composting box 1 has an inclined plate 22 fixedly connected inside it, and a composting chamber is formed between the inclined plate 22 and the first composting box 1. An air intake component communicating with the composting chamber is provided on the first composting box 1. The second composting box 2 has a chimney assembly vertically fixedly connected inside it. The air inlet of the chimney assembly is located inside the second composting box 2, and the air outlet of the chimney assembly is located outside the second composting box 2. A length adjustment component is installed inside the chimney assembly to adjust the distance between the air inlet and the air outlet of the chimney assembly. Several ventilation components are inclinedly arranged between the second composting box 2 and the first composting box 1. The lower end of the ventilation component is connected to the composting chamber, and the upper end of the ventilation component is connected to the interior of the second composting box 2.

[0025] The primary function of the first composting bin 1 is to conduct the low-temperature composting process, while the primary function of the second composting bin 2 is to conduct the high-temperature composting process. The primary function of the inclined plate 22 is to increase the contact area between the compost and the air intake assembly, thereby improving air intake efficiency. The primary function of the chimney assembly is to create a chimney effect in the second composting bin 2, thereby increasing the airflow speed. The primary function of the length adjustment component is to adjust the intensity of the chimney effect by changing the length of the chimney assembly, thereby controlling the ventilation efficiency within the composting bin. The primary function of the ventilation assembly is to connect the first composting bin 1 and the second composting bin 2, using the temperature difference between the first composting bin 1 and the second composting bin 2 to drive airflow into the second composting bin 2, achieving unpowered ventilation. The inclined arrangement of the ventilation assembly allows the low-temperature area of ​​the first composting bin 1 to connect with the high-temperature area of ​​the second composting bin 2, further increasing the temperature difference and improving the airflow rate. Overall, this invention utilizes a first compost bin and a second compost bin connected in series. By placing compost at different stages in the first and second bins, the temperature difference between the two bins facilitates airflow from the first bin to the second bin. Simultaneously, a chimney assembly within the second bin utilizes the chimney effect to rapidly expel air, further enhancing airflow speed. This invention combines the chimney effect and the temperature difference effect to achieve unpowered ventilation, resulting in faster airflow and higher ventilation efficiency. Furthermore, the combination of the chimney effect and the temperature difference effect reduces dependence on wind speed, temperature, and other environmental factors, leading to more stable ventilation.

[0026] The scheme is further optimized. The air intake component includes several air intake holes 7 opened on the side wall of the first composting box 1 away from the composting chamber and several ventilation holes 8 opened on the inclined plate 22. The composting chamber is connected to the outside through several ventilation holes 8 and air intake holes 7.

[0027] like Figure 2 As shown, in this embodiment, the inclined plate 22 is fixedly connected between the inner bottom wall and the left side wall of the first composting box 1, and the composting chamber is located on the right side of the inclined plate 22. The air inlet 7 is located on the left side wall, and ambient air enters the composting chamber through a number of air inlets 7 and a number of vents 8 in sequence, thereby achieving the intake of outside air.

[0028] Further optimization of the scheme: the ventilation component includes an inclined ventilation pipe 6. The lower end of the ventilation pipe 6 is fixedly connected to the side wall of the first composting box 1 away from the air inlet 7, and the lower end of the ventilation pipe 6 is connected to the composting chamber. The upper end of the ventilation pipe 6 is fixedly connected to the side wall of the second composting box 2, and the upper end of the ventilation pipe 6 is connected to the interior of the second composting box 2. The vent pipe 6 is connected to a gas valve 19 and a gas flow meter 20.

[0029] like Figure 1 and Figure 2As shown, since the temperature at the bottom of the composting chamber is higher than that at the top, by tilting the vent pipe 6, the temperature difference between the two ends of the vent pipe 6 can be further increased, and the air flow under the effect of temperature difference can be intensified, so that the air flows from the first composting chamber 1 to the second composting chamber 2.

[0030] The main function of the gas flow meter 20 is to detect the flow rate of air flowing from the first composting tank 1 to the second composting tank 2, thereby determining the ventilation status of the entire composting device. The main function of the air valve 19 is to enable manual adjustment of the ventilation rate.

[0031] like Figure 1 As shown in this embodiment, three sets of venting pipes 6 are connected between the first composting box 1 and the second composting box 2. The gas flow rate in the three sets of venting pipes 6 can be monitored by three sets of gas flow meters 20. Not only can the overall gas flow rate of the composting device be monitored, but the gas flow rate in the three sets of venting pipes 6 can also be monitored by the gas flow meters 20. By adjusting the opening of each gas valve 19, the gas flow rate in each venting pipe can be kept equal or close, thereby controlling the uniformity of airflow between the first composting box 1 and the second composting box 2.

[0032] In a further optimized design, the chimney assembly includes an outer chimney 18, which is vertically fixed inside the second compost bin 2. Several air holes 21 are provided on the bottom side wall of the outer chimney 18. An inner chimney 5 is slidably connected to the top opening of the outer chimney 18. The top of the inner chimney 5 extends upward through the top of the second compost bin 2. A length adjustment component is provided between the inner chimney 5 and the outer chimney 18.

[0033] In a further optimized design, the bottom of the outer chimney 18 is fixed in the second compost bin 2 by a support rod, and air can enter the outer chimney 18 from the bottom opening and several air holes 21 on the side wall.

[0034] like Figure 2 As shown, due to the heat generated during composting, the temperature at the bottom inner side of the outer chimney 18 is high. The hot air inside the outer chimney 18 rises and is exhausted from the inner chimney 5, creating a negative pressure state within the outer chimney 18. Air from the second compost bin 2 passes through the compost and enters the outer chimney 18 under this negative pressure, forming airflow and achieving non-powered ventilation. Simultaneously, as air from the second compost bin 2 enters the outer chimney 18, air from the first compost bin 1 enters the second compost bin 2 through the vent pipe 6, further accelerating airflow under the temperature difference effect, improving ventilation efficiency, and reducing dependence on ambient wind speed and temperature.

[0035] Further optimization of the design includes a length adjustment component comprising a rack 24 vertically fixedly connected to the side wall of the inner chimney 5, a clearance groove 25 vertically opened on the inner wall of the outer chimney 18, the rack 24 being slidably connected within the clearance groove 25, a housing 17 fixedly connected to the top of the side wall of the outer chimney 18, a motor (not shown in the figure) fixedly connected inside the housing 17, a gear 23 fixedly sleeved on the output shaft of the motor, the gear 23 penetrating the housing 17 and the clearance groove 25 and meshing with the rack 24.

[0036] like Figure 3 As shown, with the inner chimney 5 extending beyond the outer chimney 18, the overall length increases, intensifying the chimney effect and increasing the airflow rate. Therefore, when it is necessary to increase the airflow rate within the first compost bin 1 and the second compost bin 2, the motor can be controlled to rotate the gear 23. The gear 23 then pushes the rack 24 upwards, causing the inner chimney 5 to move upwards relative to the outer chimney 18, thereby increasing the airflow rate. Similarly, when it is necessary to slow down the airflow rate, the motor can be reversed to lower the inner chimney 5.

[0037] Further optimization of the design involves installing a vortex flow meter (not shown in the figure) inside the inner chimney 5, which can be used to measure the gas flow rate in each inner chimney 5. For example... Figure 1 As shown, this embodiment has three sets of chimney assemblies. By adjusting the height of the inner chimney 5 in each chimney assembly, the chimney effect of each chimney assembly can be fine-tuned, thereby improving the airflow uniformity in the second composting box 2.

[0038] In a further optimized design, a fixing ring 26 is detachably connected to the bottom inner side of the inner chimney 5 via a limiting component. An activated carbon block 27 for removing odors from the escaping gas is fixedly connected inside the fixing ring 26.

[0039] In this embodiment, the activated carbon block 27 is made of honeycomb activated carbon, which can effectively adsorb odors and irritating gases such as ammonia and hydrogen sulfide, and avoid creating significant resistance to airflow.

[0040] like Figure 3 As shown, since odorous gases are produced during the composting process, the air flows through the activated carbon block 27 after entering the outer chimney 18, thus removing the odor from the air.

[0041] The scheme is further optimized. The limiting component includes several fixing plates 28 fixedly connected to the side wall of the fixing ring 26 and several slots 29 opened at the bottom of the inner chimney 5. The fixing plates 28 are respectively adapted to the slots 29. The bottom of the inner chimney 5 is rotatably connected to several baffles 30, and the baffles 30 are respectively attached to the bottom of the fixing plates 28.

[0042] like Figure 4As shown, the baffle 30 rotates to the bottom of the fixing plate 28, and the fixing ring 26 is fixed to the bottom of the inner chimney 5 by pushing the fixing plate 28. When the activated carbon block 27 needs to be replaced after a period of use, the baffle 30 can be rotated outward to disengage the baffle 30 from the fixing plate 28, thereby removing the fixing ring 26 from the inner chimney 5 and realizing the replacement of the activated carbon block 27.

[0043] In a further optimized design, several second through holes 15 are respectively opened on the side wall of the first composting box 1 and the side wall of the second composting box 2. A water spraying pipe 12 is slidably connected in the second through hole 15. A baffle 13 is fixedly connected to one end of the water spraying pipe 12. The baffle 13 is in contact with the outer wall of the first composting box 1 or the second composting box 2. Several water spraying holes are opened on the side wall of the other end of the water spraying pipe 12. The end of the several water spraying pipes 12 near the baffle 13 is connected to the water supply equipment through a hose.

[0044] like Figure 2 As shown in this embodiment, the water pipe 12 in the first compost bin 1 passes through the inclined plate 22. Therefore, a first through hole 14 is provided on the inclined plate 22 for the water pipe 12 to pass through.

[0045] When filling the first compost bin 1 and the second compost bin 2 with organic matter for composting, in order to avoid the problem of the compost not being compacted due to the water pipe 12, the water pipe 12 can be pulled out by pulling the baffle 13. After composting is completed, the water pipe 12 can be reinserted into the first compost bin 1 and the second compost bin 2 through the second through hole 15 and the first through hole 14.

[0046] During the composting process, airflow reduces the moisture content of the compost. To maintain the moisture content within a reasonable range, water can be supplied to the sprinkler pipe 12 through a water supply device, and the water can flow into the compost through the sprinkler holes on the sprinkler pipe 12 to replenish the moisture.

[0047] To further optimize the design, humidity sensors for detecting the humidity of the compost body are installed in the first compost bin 1 and the second compost bin 2.

[0048] Further optimization of the scheme: the bottom of the first composting box 1 and the second composting box 2 are respectively fixedly connected to a water collection tank 10. The bottom of the first composting box 1 and the second composting box 2 are respectively provided with a number of ventilation holes 9, which are connected to the water collection tank 10. A drain valve 11 is connected to the bottom of one side wall of the water collection tank 10.

[0049] like Figure 2 As shown, the vent 9 allows excess water in the compost body to flow into the water collection tank 10, preventing excessive moisture at the bottom of the compost body from reducing the quality of the compost.

[0050] The scheme has been further optimized by installing thermocouples 16 in the first composting bin 1 and the second composting bin 2 respectively. The thermocouples 16 are used to detect the temperature of the organic matter in the first composting bin 1 and the second composting bin 2.

[0051] like Figure 2 As shown, the main function of thermocouple 16 is to detect the temperature of the compost in the first composting box 1 and the second composting box 2.

[0052] The design is further optimized by setting an opening at the top of the first compost bin 1, which is connected to a first cover 3 via a hinge.

[0053] Further optimization of the scheme: the top opening of the second compost bin 2 is provided, and L-shaped baffles are fixedly connected to the two opposite side walls of the opening to form a chute 31. Two sets of second covers 4 are slidably connected in the chute 31. Several grooves are provided on the opposite side walls of the two second covers 4 to avoid the inner chimney, so that the two sets of second covers 4 can be fastened together.

[0054] In this embodiment, the operation steps of the non-powered ventilated composting device include: Materials to be composted at different stages are placed into the composting chamber of the first composting box 1 and the second composting box 2 respectively. Air is introduced into the composting chamber through the air intake assembly; The compost material undergoes aerobic fermentation and decomposition in the composting chamber. The fermentation gas produced is introduced into the second composting chamber through several ventilation components from the composting chamber of the first composting box 1 under the action of thermal pressure difference. Fermentation gases gather and rise inside the second composting box 2, enter the chimney assembly through the inlet end of the chimney assembly, flow through the chimney assembly, and are discharged into the outside atmosphere through its outlet end. The ventilation intensity during composting can be adjusted by manipulating the length adjustment mechanism within the chimney assembly and the opening degree of the ventilation assembly.

[0055] Specifically, the composting process includes a rapid heating period, a high-temperature period, a cooling period, and a maturation period, each with different temperatures. In this embodiment, the organic matter in the high-temperature period is placed in the second composting box 2, and the organic matter in the maturation period is placed in the first composting box 1. During the composting process, air from the environment enters the first composting box 1 through the air inlet 7 and the air outlet 8 under the influence of the temperature difference between the first composting box 1 and the second composting box 2, thus achieving air circulation in the compost body in the first composting box 1. Then, the air enters the second composting box 2 through the air pipe 6, and under the chimney effect formed by the outer chimney 18 and the inner chimney 5, it passes through the compost body in the second composting box 2 and enters the outer chimney 18, and is finally discharged into the environment, thus achieving air circulation.

[0056] Example 2: The first composting tank 1 and the second composting tank 2 are also equipped with oxygen concentration sensors. Through humidity sensors, thermocouples, gas flow meters and oxygen concentration sensors, the composting fermentation status in the first composting tank 1 and the second composting tank 2, such as temperature, humidity, oxygen concentration and airflow, can be monitored in real time so that timely adjustments can be made.

[0057] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A non-powered ventilated composting device, characterized in that, include: The first composting box (1) has an inclined plate (22) fixedly connected inside it. The inclined plate (22) and the first composting box (1) form a composting chamber. An air intake component communicating with the composting chamber is provided on the first composting box (1). The second composting box (2) has a chimney assembly vertically fixedly connected inside it. The air inlet of the chimney assembly is located inside the second composting box (2), and the air outlet of the chimney assembly is located outside the second composting box (2). The chimney assembly is equipped with a length adjustment component, which is used to adjust the distance between the air inlet and the air outlet of the chimney assembly. Several ventilation components are inclinedly arranged between the second composting box (2) and the first composting box (1). The lower end of the ventilation component is connected to the composting chamber, and the upper end of the ventilation component is connected to the interior of the second composting box (2).

2. The non-powered ventilated composting device according to claim 1, characterized in that: The air intake assembly includes several air intake holes (7) on the side wall of the first composting box (1) away from the composting chamber and several ventilation holes (8) on the inclined plate (22). The composting chamber is connected to the outside through several ventilation holes (8) and air intake holes (7).

3. The non-powered ventilated composting device according to claim 2, characterized in that: The ventilation assembly includes an inclined ventilation pipe (6), the lower end of which is fixedly connected to the side wall of the first composting box (1) away from the air inlet (7), and the lower end of which is connected to the composting chamber. The upper end of which is fixedly connected to the side wall of the second composting box (2), and the upper end of which is connected to the interior of the second composting box (2). The vent pipe (6) is connected to a gas valve (19) and a gas flow meter (20).

4. The non-powered ventilated composting device according to claim 1, characterized in that: The chimney assembly includes an outer chimney (18), which is vertically fixed inside the second compost bin (2). The bottom sidewall of the outer chimney (18) is provided with several air holes (21). An inner chimney (5) is slidably connected inside the top opening of the outer chimney (18). The top of the inner chimney (5) extends upward through the top of the second compost bin (2). The length adjustment component is disposed between the inner chimney (5) and the outer chimney (18).

5. A non-powered ventilated composting device according to claim 4, characterized in that: The length adjustment component includes a rack (24) vertically fixedly connected to the side wall of the inner chimney (5), and a clearance groove (25) vertically opened on the inner wall of the outer chimney (18). The rack (24) is slidably connected in the clearance groove (25). A shell (17) is fixedly connected to the top of the side wall of the outer chimney (18). A motor is fixedly connected inside the shell (17). A gear (23) is fixedly sleeved on the output shaft of the motor. The gear (23) passes through the shell (17) and the clearance groove (25) and meshes with the rack (24).

6. A non-powered ventilated composting device according to claim 4, characterized in that: The inner bottom of the inner chimney (5) is detachably connected to a fixing ring (26) via a limiting member. An activated carbon block (27) for removing odors from the escaping gas is fixedly connected inside the fixing ring (26). The limiting component includes several fixing plates (28) fixedly connected to the side wall of the fixing ring (26) and several slots (29) opened at the bottom of the inner chimney (5). The fixing plates (28) are respectively adapted to the slots (29). The bottom of the inner chimney (5) is rotatably connected to several baffles (30), and the baffles (30) are respectively attached to the bottom of the fixing plates (28).

7. The non-powered ventilated composting device according to claim 1, characterized in that: The first composting bin (1) and the second composting bin (2) are provided with several second through holes (15), and a water spraying pipe (12) is slidably connected in the second through hole (15). A baffle (13) is fixedly connected to one end of the water spraying pipe (12). The baffle (13) is attached to the outer wall of the first composting bin (1) or the second composting bin (2). Several water spraying holes are provided on the other side wall of the water spraying pipe (12). The end of several water spraying pipes (12) near the baffle (13) is connected to the water supply equipment through a hose.

8. The non-powered ventilated composting device according to claim 1, characterized in that: The bottom of the first composting box (1) and the second composting box (2) are respectively fixedly connected to a water collection tank (10). The bottom of the first composting box (1) and the second composting box (2) are respectively provided with a number of ventilation holes (9). The ventilation holes (9) are connected to the water collection tank (10). The bottom of one side wall of the water collection tank (10) is connected to a drain valve (11).

9. A non-powered ventilated composting device according to claim 1, characterized in that: The first composting bin (1) and the second composting bin (2) are respectively equipped with thermocouples (16), which are used to detect the temperature of organic matter in the first composting bin (1) and the second composting bin (2).

Images