Automatic composting apparatus

Abstract

This application provides an automated composting device, including a pretreatment component, a production component, a screening component, a feeding structure, a discharging structure, and a leachate collection structure. The production component includes a reaction chamber with an inlet and a outlet. The feeding structure is positioned between the pretreatment component and the production component. The discharging structure is positioned between the production component and the screening component. The leachate collection structure is positioned on either the production component or the screening component. During fertilizer preparation, the pretreatment product is discharged into the inlet by the feeding structure, and the intermediate product generated by the production component is discharged from the outlet into the screening component by the discharging structure. Simultaneously, the leachate is continuously recovered by the leachate collection structure to ensure timely transfer of products at different stages. The automated composting device provided by this application can efficiently transfer pretreatment products and intermediate products, reducing the time spent on manual material handling and improving the production efficiency of vermicomposting.

Description

Technical Field

[0001] This application belongs to the field of fertilizer preparation technology, specifically relating to an automatic composting device. Background Technology

[0002] Vermicomposting is an ecological treatment technology that uses specific types of earthworms to transform organic waste into highly efficient fertilizer. Specifically, through the digestion and decomposition of earthworms and the synergistic action of microorganisms, waste from fields such as kitchen waste and agriculture is transformed into nutrient-rich humus, namely vermicompost (hereinafter referred to as "fertilizer").

[0003] In existing technologies, waste needs to be pretreated before the digestion, decomposition, and synergistic action of earthworms and microorganisms can occur. After the synergistic action is completed, the leachate and earthworms in the resulting fertilizer need to be screened. In conventional operations, pretreatment and screening are carried out in two different sets of equipment, which requires the material to be transferred between at least three machines. This process is time-consuming and requires excessive manpower, resulting in low production efficiency of vermicomposting. Utility Model Content

[0004] This application provides an automatic composting device, which aims to efficiently transfer pre-treated products and intermediate products, reduce the time spent on manual material transfer, and improve the production efficiency of vermicomposting.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: An automated composting device is provided, comprising a pretreatment component, a production component, and a screening component; the production component includes a reaction chamber; the reaction chamber is disposed between the pretreatment component and the screening component, and its interior is used to contain pretreatment products and earthworms, and the reaction chamber has an inlet and a outlet; the automated composting device further includes: A feeding structure, disposed between the pretreatment component and the production component, is used to discharge the pretreatment product into the feed inlet; and A feeding structure is disposed between the production component and the screening component, for discharging intermediate products generated in the production component from the discharge port and allowing them to fall into the screening component; A leachate collection structure is provided on the production component or the screening component for recovering the leachate contained in the intermediate product; The feeding structure does not restrict the flow of the leachate, so that when the production component and the screening component are in a non-connected state, the leachate collection structure can recover the leachate.

[0006] In one possible implementation, the feeding structure includes: A baffle gate is slidably mounted on the reaction tank to close part of the discharge port, thereby restricting the passage of the intermediate product; When the baffle gate closes part of the discharge port, there is a liquid discharge gap between the baffle gate and the bottom surface of the discharge port, so that the leachate can pass through the discharge port and enter the leachate collection structure.

[0007] In one possible implementation, the production assembly further includes a frame, to which the reaction chamber is hinged; the unloading structure further includes: A swing drive component is mounted on the frame and is connected to the reaction chamber via a transmission mechanism. The oscillating drive is used to drive the reaction chamber to oscillate relative to the frame, so that the bottom surface of the reaction chamber is tilted and the intermediate product generated in the reaction chamber is discharged from the discharge port.

[0008] In one possible implementation, the leachate collection structure includes: A liquid outlet is provided on the inner bottom surface of the reaction tank and located behind the liquid outlet gap; and A storage tank, connected to the outlet hole, is used to collect the leachate discharged from the outlet hole.

[0009] In one possible implementation, the inner bottom surface of the reaction chamber has a tapering structure with a gradually narrowing width in the direction of the reaction chamber toward the screening assembly, so that the intermediate product and the leachate gradually concentrate inward along their flow path. The inner bottom surface of the reaction chamber is also provided with a protruding ridge; the protruding ridge is located behind the liquid outlet gap and extends along the width direction of the leachate flow path to change the flow path of part of the leachate and allow the leachate to flow into the liquid outlet hole.

[0010] In one possible implementation, the screening component includes: The sieve cylinder has a hollow internal structure; a receiving port is provided on the circumferential or end face of the sieve cylinder, and the receiving port is set facing the discharge port so that the intermediate product discharged from the discharge port can fall into it.

[0011] In one possible implementation, the preprocessing component includes: A pretreatment box is used to fix the reaction box above it, and the bottom of the pretreatment box is provided with a discharge port; The feeding structure includes: A flow guide plate is disposed between the pretreatment tank and the reaction tank; The upper side of the guide plate is aligned with or located below the inner bottom surface of the discharge port, so that the pre-treated product discharged through the discharge port can fall onto the upper side of the guide plate. In the direction of the pretreatment tank toward the reaction tank, the upper side of the guide plate is inclined downward so that the pretreatment product can flow along the inclined surface into the feed port.

[0012] In one possible implementation, two extrusion rollers are arranged side by side inside the pretreatment box, and both extrusion rollers have a degree of freedom to rotate relative to the pretreatment box. The top of the pretreatment box has an open structure, through which waste placed can pass between the two extrusion rollers and be transformed into the pretreatment product under the action of the two extrusion rollers rotating in opposite directions.

[0013] In one possible implementation, the guide plate has a tapered structure with a gradually decreasing width in the direction of the pretreatment tank toward the reaction tank, so that the pretreatment product gradually concentrates inward along its flow path.

[0014] In one possible implementation, the feed inlet is located at the top of the reaction chamber, and a material collection hood is provided at the top of the reaction chamber; The material collection hood closes the inlet, and the material collection hood has a receiving hole that extends through the side of the guide plate at an angle.

[0015] In this embodiment, the pretreatment component and the production component are used to form the pretreatment product and the intermediate product, respectively. After the pretreatment product is generated, the feeding structure can discharge it from the pretreatment component into the reaction chamber. After the intermediate product is generated, the unloading structure can discharge it from the reaction chamber into the screening component, so as to realize the automated transfer of the products at each stage in the process flow line, thereby eliminating the need for human intervention in the transfer process, improving the response efficiency and execution efficiency of material transfer, and reducing the adverse effects of transfer on the production efficiency of earthworm compost.

[0016] During the reaction of the intermediate product, leachate is continuously generated. Since the feeding structure does not interfere with the flow of the leachate, the leachate will leave the reaction tank and enter the leachate collection structure before the intermediate product is discharged, using the discharge path of the intermediate product. Based on this characteristic, when the intermediate product is completely generated and meets the discharge criteria, the feeding structure can be adjusted to completely discharge the intermediate product into the screening component. There is no need to treat the leachate separately, eliminating the interference of leachate on the automatic material transfer and ensuring the stability of the device during use.

[0017] The automatic composting device provided in this embodiment replaces at least two manual transfer steps in conventional operations compared to existing technologies, achieving efficient transfer of pre-treated products and intermediate products. Furthermore, it can also promptly and effectively recover leachate, reducing the time spent on manual material transfer and avoiding interference from leachate generation on the automated transfer process, thereby steadily improving the production efficiency of vermicomposting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the automatic composting device provided in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the pretreatment box and guide plate used in the embodiments of this application in a combined state; Figure 3 This is a cross-sectional view of the pretreatment box and guide plate used in the embodiments of this application in the combined state; Figure 4 This is a three-dimensional structural diagram of the production components and material collection hood used in the embodiments of this application in a combined state; Figure 5 This is an exploded structural diagram of the production components and material collection hood used in the embodiments of this application; Figure 6 This is a top view of the production components used in the embodiments of this application; Figure 7 for Figure 6 A magnified view of a portion of the middle circle A; Explanation of reference numerals in the attached drawings: 1. Pretreatment box; 11. Discharge port; 12. Extrusion roller; 2. Production component; 21. Reaction box; 211. Feed inlet; 212. Discharge port; 213. Protruding rib; 22. Frame; 3. Screen cylinder; 31. Receiving port; 4. Guide plate; 51. Material gate; 52. Swing drive component; 61. Liquid outlet; 62. Liquid storage tank; 7. Collection hood; 71. Receiving hole. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "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 application and simplifying the description, 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 application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Please refer to the following: Figures 1 to 7 The automatic composting device provided in this application will now be described. The automatic composting device proposed in this application includes a pretreatment component, a production component 2, a screening component, a feeding structure, a discharging structure, and a leachate collection structure.

[0025] Production component 2 includes reaction chamber 21; the reaction chamber 21 is located between the pretreatment component and the screening component, and its interior is used to contain the pretreatment product and earthworms (as well as raw materials such as microorganisms that participate in the digestion, decomposition and synergistic action of earthworms).

[0026] The reaction chamber 21 is provided with a feed inlet 211 and a discharge outlet 212, which are respectively located at opposite ends of the reaction chamber 21. In this embodiment, for ease of description, the end where the feed inlet 211 is located is defined as the front end of the reaction chamber 21, and the end where the discharge outlet 212 is located is defined as the rear end of the reaction chamber 21. That is, the direction in which the material enters the reaction chamber 21 and is discharged after participating in the reaction is from front to back.

[0027] The feeding structure is set between the pretreatment component and the production component 2, and is used to discharge the pretreated product that has been pretreated by the pretreatment component into the feed inlet 211.

[0028] The feeding structure is set between the production component 2 and the screening component to discharge the intermediate product generated in the production component 2 from the discharge port 212 and fall into the screening component. It should be noted that during the generation of the intermediate product, leachate will be generated, and the leachate can seep out under the pressure of the material.

[0029] A leachate collection structure is installed on production component 2 or screening component to recover leachate contained in intermediate products. Specifically, the feeding structure does not restrict the flow of leachate, so that the leachate collection structure can recover leachate even when production component 2 and screening component are not in a connected state.

[0030] In other words, when the feeding structure is not connected to the production component 2 and the screening component, the intermediate product is restricted by the feeding structure and cannot pass through the discharge port 212, while the leachate can be discharged through the discharge port 212 and is recovered at a fixed point by the recovery effect of the leachate collection structure.

[0031] In this embodiment, the pretreatment component and the production component 2 are used to form the pretreatment product and the intermediate product, respectively. After the pretreatment product is generated, the feeding structure can discharge it from the pretreatment component into the reaction chamber 21. After the intermediate product is generated, the unloading structure can discharge it from the reaction chamber 21 into the screening component, so as to realize the automated transfer of the products at each stage in the process flow line, thereby eliminating the need for human intervention in the transfer process, improving the response efficiency and execution efficiency of material transfer, and reducing the adverse effects of transfer on the production efficiency of earthworm compost.

[0032] During the reaction of the intermediate product, leachate is continuously generated. Since the feeding structure does not interfere with the flow of leachate, the leachate will leave the reaction tank 21 and enter the leachate collection structure before the intermediate product is discharged. Based on this characteristic, when the intermediate product is completely generated and meets the discharge criteria, the feeding structure can be adjusted to completely discharge the intermediate product into the screening component. There is no need to treat the leachate separately, thus eliminating the interference of leachate on the automatic material transfer and ensuring the stability of the device during use.

[0033] The automatic composting device provided in this embodiment replaces at least two manual transfer steps in conventional operations compared to existing technologies, achieving efficient transfer of pre-treated products and intermediate products. Furthermore, it can also promptly and effectively recover leachate, reducing the time spent on manual material transfer and avoiding interference from leachate generation on the automated transfer process, thereby steadily improving the production efficiency of vermicomposting.

[0034] In some embodiments, such as Figure 4 As shown, the material feeding structure includes a material blocking gate 51.

[0035] The baffle gate 51 is slidably mounted on the reaction chamber 21 in the vertical direction, and is driven by a first linear cylinder for providing lifting driving force. Specifically, the first linear cylinder is fixedly mounted inside the reaction chamber 21 and located on the inner side of the baffle gate 51 (i.e., the front side, the side facing the inside of the reaction chamber 21). The power output end of the first linear cylinder is driven by the baffle gate 51 to drive the baffle gate 51 to move in the vertical direction.

[0036] In actual use, the baffle gate 51 is used to close part of the discharge port 212 to restrict the passage of intermediate products; and when the baffle gate 51 closes part of the discharge port 212, there is a liquid outlet gap between the baffle gate 51 and the bottom surface of the discharge port 212. This liquid outlet gap allows the leachate generated in the reaction tank 21 to pass through, so that the leachate passes through the discharge port 212 and enters the leachate collection structure.

[0037] After the first linear cylinder drives the baffle gate 51 to rise, the liquid outlet gap increases to become the material outlet gap, allowing the material in the reaction tank 21 to be discharged. To ensure efficient and effective material discharge, the bottom surface of the reaction tank 21 can be inclined; additionally, in some embodiments, such as... Figure 6 As shown, the production component 2 also includes a frame 22, on which the reaction chamber 21 is hinged; the unloading structure also includes a swing drive component 52.

[0038] The swing drive 52 is mounted on the frame 22 and is connected to the reaction chamber 21 via transmission. Specifically, the swing drive 52 is a second linear cylinder, the cylinder seat of which is hinged to the frame 22, the power output end is hinged to the reaction chamber 21, and the two hinge axes are parallel to each other.

[0039] By adopting the above technical solution, in actual use, the swing drive 52 can drive the reaction box 21 to swing relative to the frame 22, so that the bottom surface of the reaction box 21 is tilted and the intermediate product generated in the reaction box 21 is discharged from the discharge port 212, ensuring the discharge efficiency and effect of the material.

[0040] In some embodiments, such as Figures 5 to 7 As shown, the leachate collection structure includes an outlet 61 and a storage tank 62.

[0041] The liquid outlet 61 is located on the inner bottom surface of the reaction chamber 21 and behind the liquid outlet gap, so as to intercept the leachate passing through the liquid outlet gap and discharge the leachate through the liquid outlet 61 to the lower side of the reaction chamber 21.

[0042] The storage tank 62 is connected to the outlet hole 61 and is used to collect the leachate discharged from the outlet hole 61. Specifically, the storage tank 62 is fixed inside the frame 22 and is connected to the outlet hole 61 through a hose to collect the leachate and facilitate subsequent sedimentation treatment of the leachate.

[0043] In some embodiments, such as Figure 6 and Figure 7 As shown, in the direction of the reaction chamber 21 toward the screening component, the inner bottom surface of the reaction chamber 21 adopts a tapering structure with a gradually narrowing width, so that the intermediate product and leachate gradually concentrate inward along their flow path, thereby reducing the difficulty of directional discharge of leachate and ensuring that the intermediate product can stably fall into the screening component.

[0044] The inner bottom surface of the reaction chamber 21 is also provided with a protruding rib 213; the protruding rib 213 is located behind the liquid outlet gap and extends along the width direction of the leachate flow path to change part of the leachate flow path and allow the leachate to flow into the liquid outlet hole 61.

[0045] In this embodiment, there are two protruding ribs 213, which are arranged side by side in the front-rear direction. One end of the front protruding rib 213 is connected to one of the inner surfaces of the discharge port 212 (opposite to each other in the width direction of the discharge port 212), and there is a gap between the other end of the front protruding rib 213 and the other inner surface of the discharge port 212. Then, when the leachate passes through the front protruding rib 213, the leachate will concentrate at the gap. The two ends of the rear protruding rib 213 are connected to two inner surfaces of the discharge port 212 (opposite to each other in the width direction of the discharge port 212), and the aforementioned liquid outlet 61 is located in front of the rear protruding rib 213. The rear edge of the liquid outlet 61 is aligned with the front edge of the rear protruding rib 213, and the protruding rib 213 is inclined toward the position of the liquid outlet 61, so as to achieve the effect of guiding the leachate toward the liquid outlet 61 and realizing the directional discharge of the leachate.

[0046] In some embodiments, such as Figure 1 As shown, the screening assembly includes a screen cylinder 3.

[0047] The screen cylinder 3 has a hollow internal structure; a receiving port 31 is provided on the circumferential or end face of the screen cylinder 3. The receiving port 31 is set facing the discharge port 212 so that the intermediate product discharged from the discharge port 212 can fall into it, thereby realizing the recovery of the intermediate product and subsequent screening and processing of the intermediate product to obtain fertilizer without impurities (earthworms).

[0048] In some embodiments, such as Figures 1 to 3 As shown, the preprocessing component includes a preprocessing box 1.

[0049] The pretreatment box 1 is fixed above the reaction box 21. Specifically, the pretreatment box 1 is fixed above the horizontal plane by a frame. The bottom of the pretreatment box 1 has a discharge port 11, which is set to face the rear.

[0050] The feeding structure includes a guide plate 4, which is disposed between the pretreatment box 1 and the reaction box 21, specifically fixed on the aforementioned frame.

[0051] The upper side of the guide plate 4 is aligned with the inner bottom surface of the outlet 11, or located below the inner bottom surface of the outlet 11, so that the pre-treated product discharged through the outlet 11 can fall onto the upper side of the guide plate 4; based on this, in the direction from the pre-treatment box 1 to the reaction box 21, the upper side of the guide plate 4 is inclined downward so that the pre-treated product can flow along the inclined surface into the feed inlet 211, thereby achieving directional discharge of the pre-treated product.

[0052] In some embodiments, such as Figure 3 As shown, two extrusion rollers 12 are arranged side-by-side inside the pretreatment box 1. Both extrusion rollers 12 have a degree of freedom to rotate relative to the pretreatment box 1, meaning that the extrusion rollers 12 and the pretreatment box 1 are rotatably connected. In actual installation, to drive the extrusion rollers 12, at least one rotary motor is installed on the pretreatment box 1. Specifically, when there is one rotary motor, the power output axis of the rotary motor is parallel to the axis of the extrusion roller 12, and the power output end of the rotary motor is connected to one of the extrusion rollers 12. In addition, this extrusion roller 12 is connected to the other extrusion roller 12 through a reverse synchronous transmission structure (such as gears), so that when the extrusion roller 12 rotates under the action of the rotary motor, the other extrusion roller 12 rotates in the opposite direction. In another case, there are two rotary motors, each connected to one of the two extrusion rollers 12, to achieve synchronous and reverse driving of the two extrusion rollers 12.

[0053] The top of the pretreatment box 1 is open, and the waste placed through the open structure can pass between the two extrusion rollers 12 and be transformed into pretreatment products under the action of the two extrusion rollers 12 rotating in opposite directions, thus realizing the pretreatment process of waste.

[0054] In some embodiments, such as Figure 2 As shown, in the direction from the pretreatment tank 1 to the reaction tank 21, the guide plate 4 adopts a tapering structure with its width gradually decreasing (the width direction is perpendicular to the material guiding direction and parallel to the horizontal plane) so that the pretreatment product gradually concentrates inward along its flow path, ensuring the stability of the pretreatment product discharge process into the reaction tank 21.

[0055] In some embodiments, such as Figure 4 and Figure 5As shown, the aforementioned feed inlet 211 is located at the top of the reaction chamber 21, that is, the feed inlet 211 is set with its opening facing upwards. Based on this, a material collection hood 7 is also provided at the top of the reaction chamber 21.

[0056] After the collection hood 7 and the reaction chamber 21 are combined, the collection hood 7 can close the inlet 211, thereby replacing the inlet 211 to complete the technical operation of feeding materials into the reaction chamber 21; specifically, the collection hood 7 has a receiving hole 71, which is inclined in the direction towards the upper side of the guide plate 4 so that the pre-treated product flowing on the guide plate 4 can enter.

[0057] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic composting device, comprising a pretreatment component, a production component, and a screening component; characterized in that, The production component includes a reaction chamber; the reaction chamber is located between the pretreatment component and the screening component, and its interior is used to contain the pretreatment product and earthworms, and the reaction chamber is provided with an inlet and a outlet. The automated composting device also includes: A feeding structure, disposed between the pretreatment component and the production component, is used to discharge the pretreatment product into the feed inlet; and A feeding structure is disposed between the production component and the screening component, for discharging intermediate products generated in the production component from the discharge port and allowing them to fall into the screening component; A leachate collection structure is provided on the production component or the screening component for recovering the leachate contained in the intermediate product; The feeding structure does not restrict the flow of the leachate, so that when the production component and the screening component are in a non-connected state, the leachate collection structure can recover the leachate.

2. The automatic composting device as described in claim 1, characterized in that, The feeding structure includes: A baffle gate is slidably mounted on the reaction tank to close part of the discharge port, thereby restricting the passage of the intermediate product; When the baffle gate closes part of the discharge port, there is a liquid discharge gap between the baffle gate and the bottom surface of the discharge port, so that the leachate can pass through the discharge port and enter the leachate collection structure.

3. The automatic composting device as described in claim 2, characterized in that, The production assembly also includes a frame, to which the reaction chamber is hinged; the feeding structure also includes: A swing drive component is mounted on the frame and is connected to the reaction chamber via a transmission mechanism. The oscillating drive is used to drive the reaction chamber to oscillate relative to the frame, so that the bottom surface of the reaction chamber is tilted and the intermediate product generated in the reaction chamber is discharged from the discharge port.

4. The automatic composting device as described in claim 2 or 3, characterized in that, The leachate collection structure includes: A liquid outlet is provided on the inner bottom surface of the reaction tank and located behind the liquid outlet gap; and A storage tank, connected to the outlet hole, is used to collect the leachate discharged from the outlet hole.

5. The automatic composting device as described in claim 4, characterized in that, In the direction of the reaction chamber toward the screening assembly, the inner bottom surface of the reaction chamber adopts a tapering structure with a gradually narrowing width, so that the intermediate product and the leachate gradually concentrate inward along their flow path; The inner bottom surface of the reaction chamber is also provided with a protruding ridge; the protruding ridge is located behind the liquid outlet gap and extends along the width direction of the leachate flow path to change the flow path of part of the leachate and allow the leachate to flow into the liquid outlet hole.

6. The automatic composting device as described in claim 2 or 3, characterized in that, The screening component includes: The sieve cylinder has a hollow internal structure; a receiving port is provided on the circumferential or end face of the sieve cylinder, and the receiving port is set facing the discharge port so that the intermediate product discharged from the discharge port can fall into it.

7. The automatic composting device as described in claim 1, characterized in that, The preprocessing components include: A pretreatment box is used to fix the reaction box above it, and the bottom of the pretreatment box is provided with a discharge port; The feeding structure includes: A flow guide plate is disposed between the pretreatment tank and the reaction tank; The upper side of the guide plate is aligned with or located below the inner bottom surface of the discharge port, so that the pre-treated product discharged through the discharge port can fall onto the upper side of the guide plate. In the direction of the pretreatment tank toward the reaction tank, the upper side of the guide plate is inclined downward so that the pretreatment product can flow along the inclined surface into the feed port.

8. The automatic composting device as described in claim 7, characterized in that, Two extrusion rollers are arranged side by side inside the pretreatment box, and both extrusion rollers have a degree of freedom to rotate relative to the pretreatment box. The top of the pretreatment box has an open structure, through which waste placed can pass between the two extrusion rollers and be transformed into the pretreatment product under the action of the two extrusion rollers rotating in opposite directions.

9. The automatic composting device as described in claim 7, characterized in that, In the direction from the pretreatment tank to the reaction tank, the guide plate has a tapering structure with its width gradually decreasing, so that the pretreatment product gradually concentrates inward along its flow path.

10. The automatic composting device as described in claim 7, characterized in that, The feed inlet is located at the top of the reaction chamber, and a material collection hood is provided at the top of the reaction chamber; The material collection hood closes the inlet, and the material collection hood has a receiving hole that extends through the side of the guide plate at an angle.

Images