Organic composting device for improving activity of decomposing bacteria

By introducing crushing rollers and guide plates into the organic composting device for material pretreatment, and combining them with turning and control components, the problems of uneven material mixing and lack of oxygen were solved, the full activity of decomposing bacteria was achieved, and the composting efficiency and quality were improved.

CN224677991UActive Publication Date: 2026-08-25SOUTH CHINA AGRICULTURAL UNIVERSITY
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Patent Information

Application Number
CN202522185363.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-16
Publication Date
2026-08-25
Estimated Expiration
2035-10-16

AI Technical Summary

Technical Problem

Traditional organic composting equipment lacks an effective material pretreatment structure, resulting in large pieces of material being difficult to refine and mixed evenly, insufficient penetration of decomposing bacteria, and simple mixing of compost bins that cannot be turned over in all directions, which easily leads to local hypoxia and reduces the activity of decomposing bacteria.

Method used

The device is equipped with crushing rollers and guide plates for material pretreatment. Combined with a turning component and a control component, it ensures that the material is mixed evenly and avoids oxygen deficiency. The composting environment is adjusted in real time through temperature and pH sensors.

Benefits of technology

It significantly improves the uniformity of materials and the permeability of decomposing bacteria, avoids local hypoxia, ensures that decomposing bacteria remain active throughout the composting process, and improves composting efficiency and quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an organic composting device that improves the activity of decomposing bacteria, which comprises a support frame, a pretreatment bin and a fertilizer box are arranged on the support frame; two groups of crushing rollers are symmetrically arranged on the inner side wall of the pretreatment bin, a driving element connected with the crushing rollers is arranged on one side, a pump element is arranged on the top of the fertilizer box and is in communication with the pretreatment bin through the pump element; a composting part is arranged on one side of the support frame, the composting part comprises a composting tank, a conveying cylinder is arranged at the bottom of the pretreatment bin, a feeding pipe is arranged on the top of the composting tank, and the feeding pipe is connected with the conveying cylinder; a turnover assembly and a regulation and control assembly are arranged in the composting tank, the turnover assembly is used for uniformly contacting the material and the decomposing bacteria and avoiding local oxygen deficiency, the regulation and control assembly is used for real-time adjustment of the composting temperature environment parameters, and a temperature sensor and a pH sensor are further arranged in the composting tank. The device creates suitable conditions for the decomposing bacteria through pretreatment, turnover and environmental regulation, effectively improves the activity of the decomposing bacteria, and improves the composting efficiency and quality.
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Description

Technical Field

[0001] This utility model belongs to the technical field of composting devices, and more specifically, it relates to an organic composting device that improves the activity of decomposing bacteria. Background Technology

[0002] Organic composting equipment is a specialized device used to convert organic materials into organic fertilizer through the biodegradation of decomposing bacteria. However, the activity of decomposing bacteria directly determines the composting efficiency and fertilizer quality. Only by ensuring that the decomposing bacteria are always active can the composting cycle be shortened, the conversion rate of organic materials be improved, and problems such as odor diffusion and pathogen residues be avoided during the composting process.

[0003] However, most traditional organic composting devices lack effective material pretreatment structures and rely solely on simple feeding methods to send materials into the compost bin. This makes it difficult to break down large, hard materials, resulting in poor material mixing uniformity and preventing decomposing bacteria from fully penetrating the material. Furthermore, the compost bin is usually equipped with only basic stirring components, making it difficult to achieve full-range material turning and easily creating localized oxygen-deficient areas, further reducing the activity of decomposing bacteria. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an organic composting device that enhances the activity of decomposing bacteria. This addresses the issues in the prior art where traditional organic composting devices lack effective pretreatment structures, making it difficult to refine large materials, resulting in uneven mixing and insufficient penetration of decomposing bacteria. Furthermore, the simple mixing of compost bins, which prevents omnidirectional turning, can easily lead to localized oxygen deficiency and reduce the activity of decomposing bacteria.

[0005] The purpose and effectiveness of this utility model for improving the activity of decomposing bacteria in organic composting are achieved by the following specific technical means: An organic composting device for improving the activity of decomposing bacteria includes a support frame, on which a pretreatment chamber and a fertilizer tank are mounted. Two sets of crushing rollers are symmetrically arranged on the inner sidewall of the pretreatment chamber. A drive unit is located on one side of the pretreatment chamber and is connected to the crushing rollers. A pump is located at the top of the fertilizer tank, and the fertilizer tank is connected to the pretreatment chamber via the pump. A composting section is located on one side of the support frame, including a composting tank. A conveying cylinder is located at the bottom of the pretreatment chamber, and a feed pipe is located at the top of the composting tank, connected to the conveying pipe. The composting tank is equipped with a turning component to ensure uniform contact between the material and the decomposing bacteria and to prevent localized oxygen deficiency, and a regulating component to adjust the composting temperature and environmental parameters in real time. A temperature sensor and a pH sensor are also installed inside the composting tank.

[0006] According to a preferred embodiment, the pretreatment chamber is provided with two sets of support seats, each of which is provided with a guide plate. The guide plate is connected to the support seat through multiple sets of damping seats, and a vibration motor is provided at the bottom of the guide plate.

[0007] According to a preferred embodiment, two sets of guide plates are symmetrically and obliquely arranged in the pretreatment chamber, forming an outlet channel between the two sets of guide plates. A transport screw is provided in the outlet channel, and a first drive motor is provided on the frame. One end of the transport screw passes through the pretreatment chamber and is connected to the first drive motor, and the other end passes through the pretreatment chamber and extends into the conveying cylinder.

[0008] According to a preferred embodiment, the pretreatment chamber has two sets of guide grooves on its side wall and a partition at the bottom of the pretreatment chamber. One end of each of the two sets of guide plates is located in one of the two sets of guide grooves, and the guide plates are connected to the bottom of the guide grooves and the top of the partitions by pads.

[0009] According to a preferred embodiment, the two sets of crushing rollers are rotatably connected at both ends to the side wall of the pretreatment chamber; the driving component includes a belt and a second driving motor, the two sets of crushing rollers are connected at both ends through the belt, the second driving motor is mounted on the pretreatment chamber, and the output shaft of the second driving motor is connected to one of the sets of crushing rollers.

[0010] According to a preferred embodiment, the flipping assembly includes multiple sets of flipping screws located inside the composting tank. Multiple sets of first motors are provided on the top of the composting tank. The flipping screws are rotatably connected to the composting tank, and the shaft ends of the first motors are connected to the flipping screws.

[0011] According to a preferred embodiment, the flipping assembly further includes a rotating disk located at the bottom of the internal space of the composting tank and rotatably connected to the composting tank; a second motor is provided at the bottom of the composting tank, the shaft end of the second motor is connected to the rotating disk, and multiple sets of flipping blades are provided at the top of the rotating disk.

[0012] According to a preferred embodiment, the control component includes a nozzle and a heating element. The nozzle is located at the top of the internal space of the composting tank and is connected to the composting tank. The nozzle is connected to an external water supply device through a connecting pipe. A slot is provided on the composting tank. The heating element is sleeved on the composting tank and locked in the slot. A temperature controller is provided on the composting tank and is electrically connected to the heating element.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This device, by symmetrically setting two sets of crushing rollers in the pretreatment chamber, and coordinating with a drive unit to rotate the crushing rollers, can effectively crush and refine large, hard materials, solving the problem of uneven material particle size caused by simple feeding in traditional devices. Simultaneously, the inclined guide plates in the pretreatment chamber, driven by a vibrating motor, assist in material conveying, and the conveying screw in the outlet channel further ensures stable material delivery to the composting tank. Furthermore, the fertilizer tank delivers fertilizer to the pretreatment chamber via a pump, allowing for preliminary mixing of the material and fertilizer in advance. This series of structural designs significantly improves the uniformity of the material, allowing decomposing bacteria to penetrate more fully into the material, laying a solid foundation for the activity of decomposing bacteria during subsequent composting.

[0014] 2. The turning component inside the composting tank, through the cooperation of multiple sets of turning screws and a rotating disk with turning blades at the bottom, achieves all-round turning of the material, avoiding the local oxygen deficiency problem caused by the simple stirring components of traditional devices, and providing a sufficient oxygen environment for decomposing bacteria. The nozzles in the control component can replenish water into the composting tank through external water supply equipment, and the heating element, together with the temperature controller, can adjust the composting temperature in real time. In addition, the temperature sensor and pH sensor inside the composting tank monitor environmental parameters in real time, which makes it easy for the staff to adjust the composting conditions in a timely manner, so that the composting environment is always in a state suitable for the growth and reproduction of decomposing bacteria, significantly reducing the impact of environmental factors on the activity of decomposing bacteria, and effectively improving composting efficiency and quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model; Figure 2 This is a cross-sectional view of the pretreatment chamber; Figure 3 This is a schematic diagram of the disassembled composting section; Figure 4 This is a schematic diagram of the structure of the first drive motor; Figure 5 yes Figure 2 A magnified view of a portion of region a.

[0016] In the diagram, the correspondence between component names and their corresponding reference numerals is as follows: 11. Support frame; 12. Pretreatment bin; 13. Fertilizer bin; 14. Crushing roller; 15. Conveyor cylinder; 21. Composting tank; 22. Feed pipe; 31. Support base; 32. Guide plate; 33. Damping seat; 34. Vibration motor; 35. Outlet channel; 36. Transport screw; 37. First drive motor; 41. Guide groove; 42. Partition plate; 43. Pad strip; 44. Second drive motor; 51. Tilting screw; 52. First motor; 53. Rotating disk; 54. Second motor; 55. Tilting blade; 56. Nozzle; 57. Heating element; 58. Slot. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0018] Example: Figures 1 to 5 As shown, this utility model provides an organic composting device for improving the activity of decomposing bacteria. The device includes a support frame 11, which serves as the basic support component for the entire device. The support frame 11 can bear the weight of all components, including the pretreatment chamber 12, fertilizer box 13, and composting tank 21, ensuring that each component maintains a stable relative position during operation and preventing the device from shaking and affecting material processing and composting. The support frame 11 is equipped with the pretreatment chamber 12 and the fertilizer box 13. The pretreatment chamber 12 is the core area for the initial treatment of composting raw materials, where various organic materials are crushed and guided, creating favorable conditions for subsequent mixing with decomposing bacteria and composting fermentation. The fertilizer box 13 stores nutrient fertilizer that promotes the growth of decomposing bacteria. A pump at the top quantitatively delivers the fertilizer into the pretreatment chamber 12, allowing the fertilizer to be pre-mixed with the crushed materials, providing sufficient nutrients for the decomposing bacteria and thus helping to improve their activity.

[0019] Two sets of crushing rollers 14 are symmetrically arranged on the inner wall of the pretreatment chamber 12. Through relative rotation, the two sets of crushing rollers 14 can compress and shear large, hard organic materials fed into the pretreatment chamber 12, breaking them into smaller, more uniform particles. Reduced particle size increases the contact area with decomposing bacteria, allowing the bacteria to penetrate the material more easily. It also facilitates subsequent uniform mixing with fertilizer and decomposing bacteria, providing a foundation for the effective activity of the decomposing bacteria. A drive unit is located on one side of the pretreatment chamber 12, connected to the crushing rollers 14, providing power for their rotation and ensuring continuous and stable crushing of the material.

[0020] The fertilizer tank 13 is connected to the pretreatment chamber 12 via a pump feeder. The pump feeder controls the amount and speed of fertilizer delivery, ensuring that the fertilizer is mixed with the materials in the pretreatment chamber 12 according to a set ratio, thus preventing excessive or insufficient fertilizer from affecting the growth environment of the decomposing bacteria. A composting section is provided on one side of the support frame 11, which includes a composting tank 21. The composting tank 21 is the main site for the fermentation reaction between the materials and the decomposing bacteria, providing a relatively closed and controllable environment for the composting process and reducing the interference of external environmental factors on the composting process and the activity of the decomposing bacteria.

[0021] The pretreatment chamber 12 is equipped with a conveyor cylinder 15 at its bottom, and the composting tank 21 is equipped with a feed pipe 22 at its top. The feed pipe 22 is connected to the conveyor cylinder 15, which stably transports the pretreated material from the pretreatment chamber 12 to the feed pipe 22, and then the material is introduced into the composting tank 21 through the feed pipe 22. This ensures smooth material transfer from pretreatment to composting, preventing material accumulation or loss during transfer. The composting tank 21 is equipped with a turning component and a regulating component. The turning component ensures uniform contact between the material and the decomposing bacteria and prevents localized oxygen deficiency. By turning the material in the composting tank 21, material clumping can be broken up, allowing the decomposing bacteria to be evenly distributed in the material. At the same time, it can turn the material at the bottom of the composting tank 21 to the upper layer, allowing it to come into contact with air and replenish oxygen, preventing localized oxygen deficiency that could reduce the activity of the decomposing bacteria. The regulating component is used to adjust the composting temperature environment parameters in real time, creating suitable growth temperature conditions for the decomposing bacteria and preventing excessively high or low temperatures from inhibiting their activity. The temperature and pH sensors installed inside the composting tank 21 can monitor the temperature and pH changes inside the composting tank 21 in real time. Based on the data fed back by the sensors, the staff can adjust the composting environment in a timely manner through the control components to further ensure that the decomposing bacteria are always in a suitable growth environment and maintain high activity.

[0022] The pretreatment chamber 12 is equipped with two sets of support seats 31, which are fixed to the inner wall of the pretreatment chamber 12 to support components such as guide plates 32, damping seats 33, and vibratory motors 34, ensuring the stability of these components during operation. Guide plates 32 are installed above each support seat 31, and the guide plates 32 are inclined to guide the crushed material in the pretreatment chamber 12 to move in a designated direction, preventing material accumulation and ensuring smooth entry into subsequent conveying stages.

[0023] The guide plate 32 is connected to the support base 31 through multiple sets of damping seats 33. The damping seats 33 can buffer the vibration generated by the vibration motor 34 when it is working, reduce the impact of vibration on the support base 31 and the overall structure of the pretreatment chamber 12, and at the same time make the vibration of the guide plate 32 more stable, avoiding material splashing due to excessive vibration amplitude. The bottom of the guide plate 32 is equipped with a vibration motor 34. The vibration generated by the vibration motor 34 when it is working is transmitted to the guide plate 32, which can drive the material on the guide plate 32 to shake, prevent the material from sticking to the surface of the guide plate 32, accelerate the downward speed of the material, and ensure that the material can continuously and smoothly enter the discharge channel 35, which can buy time for subsequent mixing with decomposition bacteria and composting, and also reduce waste caused by material residue and subsequent cleaning difficulty.

[0024] Two sets of guide plates 32 are symmetrically inclined and set inside the pretreatment chamber 12. The inclination angle is reasonably set to ensure that the material slides smoothly under its own weight and vibration, while avoiding insufficient crushing due to excessive material sliding speed. An outlet channel 35 is formed between the two sets of guide plates 32. The outlet channel 35 is a centralized conveying channel for the pretreated material, which can collect the material guided down by the two sets of guide plates 32 together for subsequent unified transportation to the composting tank 21.

[0025] A conveying screw 36 is installed inside the outlet channel 35, and a first drive motor 37 is installed on the support frame 11. The first drive motor 37 provides power for the rotation of the conveying screw 36. By rotating, the conveying screw 36 can push the material in the outlet channel 35 towards the conveying cylinder 15, realizing quantitative and stable material conveying. One end of the conveying screw 36 passes through the pretreatment chamber 12 and is connected to the first drive motor 37, while the other end extends through the pretreatment chamber 12 into the conveying cylinder 15. This connection method ensures that the conveying screw 36 can continuously convey the material from the outlet channel 35 to the conveying cylinder 15, and then enter the composting tank 21 through the conveying cylinder 15 and the feed pipe 22. The entire conveying process is stable and orderly, avoiding material accumulation and blockage. At the same time, it can also ensure that the amount of material entering the composting tank 21 is uniform, providing a stable material basis for the uniform mixing of decomposing bacteria and materials and subsequent composting fermentation, which helps to maintain the stable activity of decomposing bacteria.

[0026] The pretreatment chamber 12 has two sets of guide grooves 41 on its side wall. One end of each set of guide plates 32 is located within one of the two sets of guide grooves 41. The guide grooves 41 provide support and limit for the guide plates 32, ensuring that the guide plates 32 remain in the set position during vibration and preventing them from shifting due to vibration, which would affect the material guiding effect. A partition 42 is provided at the bottom of the pretreatment chamber 12. The partition 42 separates the bottom space of the pretreatment chamber 12 from other areas, preventing materials or impurities from entering other structural areas at the bottom of the pretreatment chamber 12. It also provides some support for the guide plates 32, enhancing their stability during operation.

[0027] The guide plate 32 is connected to the bottom of the guide groove 41 and the top of the partition plate 42 by a pad 43. The pad 43 can fill the gap between the guide plate 32, the guide groove 41, and the partition plate 42, reduce the direct friction between the guide plate 32 and other components when it vibrates, reduce component wear, extend service life, and at the same time make the vibration of the guide plate 32 more stable, ensuring smooth material guidance and conveying process, providing a guarantee for the subsequent mixing of materials and decomposition bacteria and composting process, and indirectly helping to maintain the activity of decomposition bacteria.

[0028] The two sets of crushing rollers 14 are rotatably connected at both ends to the side wall of the pretreatment chamber 12. This connection method ensures that the crushing rollers 14 can rotate stably around their own axis, providing a stable motion trajectory for material crushing. The driving components include a belt and a second drive motor 44. The second drive motor 44 is mounted on the pretreatment chamber 12 and provides a power source for the rotation of the crushing rollers 14. The two sets of crushing rollers 14 are connected at both ends by a belt. When the second drive motor 44 drives one set of crushing rollers 14 to rotate, the other set of crushing rollers 14 can be driven to rotate synchronously through the transmission action of the belt. The two sets of crushing rollers 14 rotate in opposite directions, forming a squeezing and shearing force on the material, crushing large pieces of material into small particles.

[0029] After the material is crushed, the particle size decreases, increasing the contact area with decomposing bacteria. This allows the bacteria to more thoroughly decompose the organic matter in the material. It also facilitates the uniform mixing of the material and fertilizer, providing the bacteria with more nutrients and a suitable growth environment, thus helping to improve their activity. The output shaft of the second drive motor 44 is connected to one of the crushing rollers 14, ensuring that power is directly and efficiently transmitted to the crushing rollers 14. This guarantees stable rotational speed of the crushing rollers 14, ensuring uniform material crushing and preventing poor crushing from affecting the subsequent composting process and the activity of the decomposing bacteria.

[0030] like Figure 2 , Figure 3 As shown, the tilting assembly includes multiple tilting screws 51, which are located inside the composting tank 21. Multiple first motors 52 are mounted on the top of the composting tank 21, providing power for the rotation of the tilting screws 51. The tilting screws 51 are rotatably connected to the composting tank 21, ensuring stable rotation within the tank. The shafts of the first motors 52 are connected to the tilting screws 51, allowing the power from the first motors 52 to be directly transmitted to the tilting screws 51, driving them to rotate continuously.

[0031] During rotation, the rotating screw 51 stirs and agitates the material inside the composting tank 21, breaking up clumps and ensuring full contact between the material and decomposing bacteria. This prevents the bacteria from concentrating in certain areas, which could lead to slow decomposition in others. Simultaneously, the agitation process exchanges material between different locations within the composting tank 21, ensuring even air contact and replenishing oxygen. This prevents localized oxygen deficiency that could reduce the activity of decomposing bacteria, thus helping to maintain high bacterial activity and promoting efficient composting.

[0032] The tilting assembly also includes a rotating disk 53, which is located at the bottom of the internal space of the composting tank 21 and is rotatably connected to the composting tank 21, allowing it to rotate stably at the bottom of the composting tank 21. A second motor 54 is installed at the bottom of the composting tank 21, providing power for the rotation of the rotating disk 53. The shaft of the second motor 54 is connected to the rotating disk 53, ensuring that power is efficiently transmitted to the rotating disk 53, driving the rotating disk 53 to rotate at a set speed.

[0033] The top of the rotating disc 53 is equipped with multiple sets of tilting blades 55. When the disc 53 rotates, the tilting blades 55 rotate accordingly, turning the material deposited at the bottom of the composting tank 21 upwards to prevent the material from accumulating at the bottom for a long time and causing oxygen deficiency. At the same time, it can also turn the upper layer of material to the bottom, achieving all-round mixing of the material. This turning method further enhances the uniformity of contact between the material and the decomposing bacteria, while supplementing oxygen to the decomposing bacteria, preventing the activity of the decomposing bacteria from decreasing due to oxygen deficiency, and ensuring that the decomposing bacteria can continuously and efficiently decompose the organic matter in the material.

[0034] The control components include a nozzle 56 and a heating element 57. The nozzle 56 is located at the top of the internal space of the composting tank 21 and is connected to the composting tank 21. The nozzle 56 is connected to an external water supply device through a connecting pipe. The external water supply device can spray an appropriate amount of water into the composting tank 21 through the nozzle 56 according to the humidity level inside the composting tank 21, thereby adjusting the humidity of the compost material. Suitable humidity provides a good growth environment for decomposing bacteria, avoiding both excessively low humidity which inhibits the activity of decomposing bacteria and excessively high humidity which leads to anaerobic fermentation of the material, thus affecting the normal operation of the decomposing bacteria.

[0035] The composting tank 21 has a slot 58. The heating element 57 is fitted onto the composting tank 21 and secured within the slot 58. The slot 58 fixes the heating element 57, ensuring it fits tightly against the outer wall of the composting tank 21 and improving heat transfer efficiency. The heating element 57 heats the material inside the composting tank 21 according to the internal temperature, thus regulating the composting temperature. A temperature controller on the composting tank 21 is electrically connected to the heating element 57. Based on temperature data from a temperature sensor, the temperature controller controls the heating state of the heating element 57, maintaining the temperature inside the composting tank 21 within a suitable range for the growth of decomposing bacteria. This prevents excessively high or low temperatures from inhibiting the activity of decomposing bacteria, ensuring their continuous and efficient decomposition. Both the temperature sensor and the temperature controller are conventional technologies in this field and are not limited to specific models.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. An organic composting device for improving the activity of decomposing bacteria, comprising a support frame (11), characterized in that: The support frame (11) is provided with a pretreatment chamber (12) and a fertilizer box (13). The inner side wall of the pretreatment chamber (12) is symmetrically provided with two sets of crushing rollers (14). A driving component is provided on one side of the pretreatment chamber (12), and the driving component is connected to the crushing rollers (14). A pump feeder is provided on the top of the fertilizer box (13), and the fertilizer box (13) is connected to the pretreatment chamber (12) through the pump feeder. A composting section is provided on one side of the support frame (11), and the composting section includes a composting tank (21). A conveying cylinder (15) is provided at the bottom of the pretreatment chamber (12), and a feed pipe (22) is provided on the top of the composting tank (21), and the feed pipe (22) is connected to the conveying cylinder (15). The composting tank (21) is provided with a turning component for making the material and decomposing bacteria evenly contact each other and avoiding local hypoxia, and a control component for adjusting the composting temperature environment parameters in real time. A temperature sensor and a pH sensor are also provided in the composting tank (21).

2. The organic composting device for improving the activity of decomposing bacteria according to claim 1, characterized in that: The pretreatment chamber (12) is provided with two sets of support seats (31), and each support seat (31) is provided with a guide plate (32). The guide plate (32) is connected to the support seat (31) through multiple sets of damping seats (33). The bottom of the guide plate (32) is provided with a vibration motor (34).

3. An organic composting device for improving the activity of decomposing bacteria according to claim 2, characterized in that: Two sets of guide plates (32) are symmetrically inclined and arranged in the pretreatment chamber (12). An outlet channel (35) is formed between the two sets of guide plates (32). A transport screw (36) is provided in the outlet channel (35). A first drive motor (37) is provided on the support frame (11). One end of the transport screw (36) passes through the pretreatment chamber (12) and is connected to the first drive motor (37). The other end passes through the pretreatment chamber (12) and extends into the conveying cylinder (15).

4. An organic composting device for improving the activity of decomposing bacteria according to claim 3, characterized in that: The pretreatment chamber (12) has two sets of guide grooves (41) on its side wall and a partition (42) at the bottom of the pretreatment chamber (12). One end of each of the two sets of guide plates (32) is located in the two sets of guide grooves (41). The guide plates (32) are connected to the bottom of the guide grooves (41) and the top of the partition (42) by a pad (43).

5. An organic composting device for improving the activity of decomposing bacteria according to claim 1, characterized in that: The two sets of crushing rollers (14) are rotatably connected at both ends to the side wall of the pretreatment chamber (12); the driving component includes a belt and a second driving motor (44), the two sets of crushing rollers (14) are connected at both ends through the belt, the second driving motor (44) is installed on the pretreatment chamber (12), and the output shaft of the second driving motor (44) is connected to one of the sets of crushing rollers (14).

6. An organic composting device for improving the activity of decomposing bacteria according to claim 1, characterized in that: The flipping assembly includes multiple sets of flipping screws (51), which are located inside the composting tank (21). Multiple sets of first motors (52) are provided on the top of the composting tank (21). The flipping screws (51) are rotatably connected to the composting tank (21), and the shaft end of the first motor (52) is connected to the flipping screws (51).

7. An organic composting device for improving the activity of decomposing bacteria according to claim 6, characterized in that: The flipping assembly also includes a rotating disk (53), which is located at the bottom of the internal space of the composting tank (21) and is rotatably connected to the composting tank (21); a second motor (54) is provided at the bottom of the composting tank (21), and the shaft end of the second motor (54) is connected to the rotating disk (53); and multiple sets of flipping blades (55) are provided on the top of the rotating disk (53).

8. An organic composting device for improving the activity of decomposing bacteria according to claim 1, characterized in that: The control component includes a nozzle (56) and a heating element (57). The nozzle (56) is located at the top of the internal space of the composting tank (21) and is connected to the composting tank (21). The nozzle (56) is connected to an external water supply device through a connecting pipe. A slot (58) is provided on the composting tank (21). The heating element (57) is sleeved on the composting tank (21) and is locked in the slot (58). A thermostat is provided on the composting tank (21). The thermostat is electrically connected to the heating element (57).