Garden waste decomposition and fermentation treatment device

Through the material mixing mechanism and bionic peristaltic mechanism that combines the spiral rod and the transmission shaft, the problems of long fermentation time and low mixing degree of garden waste are solved, and efficient fermentation effect is achieved.

CN120329093AInactive Publication Date: 2025-07-18李静
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Patent Information

Application Number
CN202510597199.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-09
Publication Date
2025-07-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the prior art, the fermentation time of garden waste is long and the mixing degree is low, resulting in poor fermentation efficiency and effect.

Method used

Using a material mixing mechanism and a bionic peristaltic mechanism, the combined movement of the spiral rod and the transmission shaft can achieve efficient mixing of waste and fermentation bacteria and aerobic fermentation, and provide sufficient oxygen with the gas supply mechanism.

Benefits of technology

It significantly improves the fermentation efficiency and effect of garden waste, shortens the fermentation time, and improves the contact degree and reaction efficiency of fermentation bacteria and waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a garden waste decomposition and fermentation treatment device, and relates to the field of garden waste treatment, the garden waste decomposition and fermentation treatment device comprises a fermentation box and a mounting plate fixedly connected to the fermentation box, one side of the fermentation box is fixedly connected with a mounting box and a material mixing mechanism, and the material mixing mechanism is arranged on the fermentation box and the mounting plate; the material mixing mechanism is used for mixing materials in the fermentation box, the bionic wriggling mechanism is arranged on the mounting plate and the mounting box, and the bionic wriggling mechanism is used for fermenting the materials in the fermentation box. Waste materials and zymophyte entering the fermentation box are fully mixed through the material mixing mechanism, then the interior of the waste materials is stirred through the bionic wriggling mechanism, the fermentation reaction between the zymophyte and the waste materials is promoted, and the fermentation effect and the fermentation efficiency of the waste materials are further improved through the method of combining the two.
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Description

Technical Field

[0001] The present invention relates to the technology of garden waste treatment, and particularly to a device for composting and fermenting garden waste. Background Art

[0002] Every year, garden wastes such as branches generated by garden pruning are characterized by large volume, large quantity and difficult to handle. Management or maintenance units need to contact private or waste treatment companies by themselves to transport and treat garden wastes, resulting in too high transfer and disposal costs of garden wastes in the whole industry. At the same time, these garden wastes are not fully recycled ultimately, and most of them are treated by means such as incineration and landfill, which have direct or indirect negative impacts on the ecological environment.

[0003] Producing garden wastes into compost substrates is one of the ways to solve the problem of garden waste disposal. Using microbial fermentation to produce garden wastes into compost substrates and recycling them into the local garden and forestry industries can not only solve the disposal problem, but also reduce the costs of purchasing peat soil, soil improvement materials and organic mulches in the industry every year, forming a virtuous cycle that garden wastes come from gardens and finally return to gardens, which is the future trend to solve the problem of garden waste disposal.

[0004] In the existing process of fermenting waste materials by using microbial fermentation bacteria, the waste materials are usually mixed with the fermentation bacteria and then put into a fermentation tank for natural fermentation. During the fermentation process, it is found that the overall fermentation time of the waste materials is relatively long, and at the same time, the mixing degree between the fermentation bacteria and the waste materials is relatively low, which will cause part of the waste materials not to be fully fermented, resulting in poor fermentation effect, thus causing problems of low fermentation efficiency and poor fermentation effect of garden waste materials. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for composting and fermenting garden waste to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A device for composting and fermenting garden waste, including a fermentation tank and a mounting plate fixedly connected to the fermentation tank, and a mounting box fixedly connected to one side of the fermentation tank;

[0007] A material mixing mechanism, which is arranged on the fermentation tank and the mounting plate, and is used for mixing the materials in the fermentation tank;

[0008] A bionic peristaltic mechanism, which is arranged on the mounting plate and the mounting box, and is used for fermenting the materials in the fermentation tank.

[0009] Further, the material mixing mechanism includes a plurality of first spiral rods rotatably connected to the fermentation tank. One side of the mounting plate is fixedly connected with a transmission motor. The output end of the transmission motor is fixedly connected with a first transmission shaft rotatably connected to the mounting plate through a coupling. One end of the first transmission shaft is fixedly connected with a second spiral rod rotatably connected to the fermentation tank. The outer surface of the first spiral rod is drivingly connected with a driving mechanism connected to the fermentation tank, and the driving mechanism is used to drive the first spiral rod to rotate;

[0010] The outer surface of the first transmission shaft is drivingly connected with a bionic peristaltic mechanism connected to the mounting plate and the mounting box.

[0011] Further, the bionic peristaltic mechanism includes a plurality of second transmission shafts rotatably connected to the mounting plate. The outer surfaces of the second transmission shafts and the first transmission shaft are drivingly connected through transmission wheels and transmission belts. The outer surfaces of the first transmission shaft and the second transmission shafts are fixedly sleeved with first transmission gears. The outer surfaces of the first transmission gears are meshed with a plurality of second transmission gears. The middle of the second transmission gear is fixedly sleeved with a first transmission pipe rotatably connected to the mounting plate. One end of the first transmission pipe is fixedly connected with a spline sleeve. The inner surface of the spline sleeve is slidably connected with a second transmission pipe through a transmission block. One end of the second transmission pipe is fixedly connected with a stirring mechanism, and the stirring mechanism is used to stir the material. One side of the mounting box is fixedly connected with an electric telescopic rod. One end of the electric telescopic rod is fixedly connected with a connecting plate rotatably connected to the second transmission pipe. The other end of the second transmission pipe is fixedly connected with a gas supply mechanism connected to the mounting box, and the gas supply mechanism is used to supply gas to the second transmission pipe.

[0012] Further, the stirring mechanism includes a stirring hose fixedly connected to the second transmission pipe. The outer surface of the stirring hose is fixedly connected with a plurality of capillary hoses. The outer surface of the capillary hose is fixedly connected with a plurality of soft hairs.

[0013] Further, the gas supply mechanism includes a blower fixedly connected to the mounting box. The output end of the blower is fixedly connected to the mounting box through a pipeline. One side of the mounting box is fixedly connected with a plurality of connecting hoses. One end of the connecting hose is fixedly connected with a connecting pipe rotatably connected to the second transmission pipe.

[0014] Further, the driving mechanism includes a driving motor fixedly connected to the fermentation tank. The output end of the driving motor is fixedly connected with a driving shaft through a coupling. The outer surface of the driving shaft is fixedly sleeved with a first driving gear. The outer surface of the first driving gear is meshed with a second driving gear fixedly sleeved with the first spiral rod.

[0015] Further, the top of the fermentation tank is fixedly connected with a feed pipe, and an electromagnetic valve is arranged on the feed pipe.

[0016] Further, a cleaning door is rotatably connected to one side of the fermentation box.

[0017] Compared with the prior art, a garden waste composting and fermenting treatment device provided by the present invention has the following beneficial effects:

[0018] (1) The driving mechanism drives a plurality of first screw rods to rotate, and the plurality of first screw rods drive the waste materials and fermentation bacteria in the fermentation box to move, so that the fermentation bacteria and waste materials are mixed by extrusion movement in the fermentation box. At the same time, the transmission motor drives the second screw rod to rotate, so that the waste materials and fermentation bacteria in the fermentation box move radially, further improving the mixing degree between the waste materials and between the waste materials and the fermentation bacteria, and greatly improving the fermentation effect of the fermentation bacteria on the waste materials.

[0019] (2) The transmission motor drives the first transmission shaft to rotate, the first transmission shaft drives the second transmission shaft to rotate, the first transmission shaft and the second transmission shaft drive the first transmission pipe to rotate, the first transmission pipe drives the second transmission pipe to rotate. At the same time, by driving the second transmission pipe to move in the first transmission pipe, and then the second transmission pipe drives the disturbance mechanism to move and rotate in the fermentation box, promoting the contact between the waste materials and the fermentation bacteria in the fermentation box, and at the same time supplying air to the waste materials, providing sufficient and uniform oxygen for the aerobic reaction of the fermentation bacteria, and greatly improving the fermentation efficiency and fermentation effect of the waste materials.

[0020] (3) The material mixing mechanism fully mixes the waste materials and fermentation bacteria entering the fermentation box, and then the bionic peristaltic mechanism stirs the waste materials, promoting the fermentation reaction between the fermentation bacteria and the waste materials. The combination of the two methods further improves the fermentation effect and fermentation efficiency of the waste materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0022] Figure 1 is a three-dimensional external structure diagram of the present invention;

[0023] Figure 2 is a first three-dimensional internal structure diagram of the present invention;

[0024] Figure 3 is a second three-dimensional internal structure diagram of the present invention;

[0025] Figure 4 is a third three-dimensional internal structure diagram of the present invention;

[0026] Figure 5 Front view of the internal mechanism of the first drive pipe and the second drive pipe of the present invention;

[0027] Figure 6 For the present invention Figure 2 Enlarged view of A in

[0028] Figure 7 For the present invention Figure 5 Enlarged view of B in

[0029] Explanation of reference numerals:

[0030] 1. Fermentation box; 2. Mounting plate; 3. Mounting box; 4. Feed pipe; 11. First screw rod; 12. Drive motor; 13. First drive shaft; 14. Second screw rod; 21. Second drive shaft; 22. First drive gear; 23. Second drive gear; 24. First drive pipe; 25. Spline sleeve; 26. Drive block; 27. Second drive pipe; 28. Electric telescopic rod; 29. Connecting plate; 290. Stirring hose; 291. Capillary hose; 292. Soft hair; 31. Blower; 32. Connecting hose; 33. Connecting pipe; 41. Drive motor; 42. Drive shaft; 43. First drive gear; 44. Second drive gear. Detailed implementation manners

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1

[0033] Please refer to Figures 1-3 , a device for composting and fermenting garden waste, including a fermentation box 1 and a mounting plate 2 fixedly connected to the fermentation box 1. One side of the fermentation box 1 is fixedly connected with a mounting box 3, a material mixing mechanism, the material mixing mechanism is arranged on the fermentation box 1 and the mounting plate 2, and the material mixing mechanism is used for mixing the materials in the fermentation box 1, a bionic peristalsis mechanism, the bionic peristalsis mechanism is arranged on the mounting plate 2 and the mounting box 3, and the bionic peristalsis mechanism is used for fermenting the materials in the fermentation box 1. The top of the fermentation box 1 is fixedly connected with a feed pipe 4, an electromagnetic valve is arranged on the feed pipe 4, and one side of the fermentation box 1 is rotatably connected with a cleaning door.

[0034] By opening the solenoid valve on the feed pipe 4, garden waste and fermentation bacteria are then introduced into the fermentation tank 1 through the feed pipe 4. Subsequently, the material mixing mechanism in the fermentation tank 1 fully mixes the materials and fermentation bacteria in the fermentation tank 1, facilitating the subsequent fermentation effect. At the same time, during the fermentation process, the bionic peristaltic mechanism stirs the waste, and air is introduced into the materials, further promoting the fermentation of the waste by the fermentation bacteria, greatly improving the fermentation efficiency and effect of the waste.

[0035] The material mixing mechanism includes a plurality of first spiral rods 11 rotatably connected to the fermentation tank 1. One side of the mounting plate 2 is fixedly connected with a drive motor 12. The drive motor 12 is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle of the drive motor 12. The output end of the drive motor 12 is fixedly connected with a first drive shaft 13 rotatably connected to the mounting plate 2 through a coupling. One end of the first drive shaft 13 is fixedly connected with a second spiral rod 14 rotatably connected to the fermentation tank 1. The outer surface of the first spiral rod 11 is drivingly connected with a drive mechanism connected to the fermentation tank 1, and the drive mechanism is used to drive the first spiral rod 11 to rotate.

[0036] The outer surface of the first drive shaft 13 is drivingly connected with a bionic peristaltic mechanism connected to the mounting plate 2 and the mounting box 3.

[0037] The drive mechanism includes a drive motor 41 fixedly connected to the fermentation tank 1. The drive motor 41 is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle of the drive motor 41. The output end of the drive motor 41 is fixedly connected with a drive shaft 42 through a coupling. The outer surface of the drive shaft 42 is fixedly sleeved with a first drive gear 43. The outer surface of the first drive gear 43 is meshed with a second drive gear 44 fixedly sleeved on the first spiral rod 11. By driving the drive shaft 42 to rotate through the drive motor 41, the drive shaft 42 drives the first spiral rod 11 to rotate through the first drive gear 43 and the second drive gear 44.

[0038] The drive mechanism drives the first spiral rods 11 in multiple directions to rotate. The multiple first spiral rods 11 drive the materials to move back and forth in the fermentation tank 1. At the same time, during the movement, through the drive of the first spiral rods 11, the wastes are squeezed and fused with each other, further improving the mixing degree between the wastes and the fermentation bacteria. At the same time, during the mixing process, the second spiral rod 14 is driven to rotate through the drive motor 12. The second spiral rod 14 drives the materials in the fermentation tank 1 to move back and forth, prompting the materials to move radially in the fermentation tank 1, further improving the mixing degree between the wastes and between the wastes and the fermentation bacteria, and greatly improving the fermentation effect of the fermentation bacteria on the wastes.

[0039] Embodiment 2

[0040] Based on the first embodiment, please refer to Figures 2-7 As shown, the bionic peristaltic mechanism includes a plurality of second transmission shafts 21 rotatably connected to the mounting plate 2. The outer surface of the second transmission shaft 21 is connected to the outer surface of the first transmission shaft 13 through transmission wheels and transmission belts. Fixedly sleeved on the outer surfaces of both the first transmission shaft 13 and the second transmission shaft 21 are a plurality of first transmission gears 22. Meshed with the outer surface of the first transmission gear 22 are a plurality of second transmission gears 23. Fixedly sleeved in the middle of the second transmission gear 23 is a first transmission pipe 24 rotatably connected to the mounting plate 2. One end of the first transmission pipe 24 is fixedly connected to a spline sleeve 25. Slidably connected to the inner surface of the spline sleeve 25 through a transmission block 26 is a second transmission pipe 27. One end of the second transmission pipe 27 is fixedly connected to a stirring mechanism for stirring the material. Fixedly connected to one side of the installation box 3 is an electric telescopic rod 28. One end of the electric telescopic rod 28 is fixedly connected to a connecting plate 29 rotatably connected to the second transmission pipe 27. The other end of the second transmission pipe 27 is fixedly connected to a gas supply mechanism connected to the installation box 3 for supplying gas to the second transmission pipe 27.

[0041] The stirring mechanism includes a stirring hose 290 fixedly connected to the second transmission pipe 27. Fixedly connected to the outer surface of the stirring hose 290 are a plurality of capillary hoses 291. Fixedly connected to the outer surface of the capillary hose 291 are a plurality of soft hairs 292.

[0042] The gas supply mechanism includes a blower 31 fixedly connected to the installation box 3. The output end of the blower 31 is fixedly connected to the installation box 3 through a pipeline. Fixedly connected to one side of the installation box 3 are a plurality of connecting hoses 32. One end of the connecting hose 32 is fixedly connected to a connecting pipe 33 rotatably connected to the second transmission pipe 27.

[0043] When the blower 31 operates, the blower 31 blows air into the installation box 3 through the pipeline, and then the installation box 3 supplies air into the second transmission pipe 27 through the connecting hose 32 and the connecting pipe 33.

[0044] The driving motor 12 drives the first transmission shaft 13 to rotate. The first transmission shaft 13 drives the second transmission shaft 21 to rotate through transmission wheels and a transmission belt. The first transmission shaft 13 and the second transmission shaft 21 drive the first transmission pipe 24 to rotate through the first transmission gear 22 and the second transmission gear 23. The first transmission pipe 24 drives the second transmission pipe 27 to rotate through a spline sleeve 25 and a transmission block 26. The second transmission pipe 27 drives the stirring hose 290 to rotate. The electric telescopic rod 28 drives the connecting plate 29 to move. The connecting plate 29 drives the second transmission pipe 27 to move. The connecting plate 29 drives the second transmission pipe 27 and the transmission block 26 to slide on the spline sleeve 25. Subsequently, the second transmission pipe 27 drives the stirring hose 290 to enter the fermentation tank 1 from the first transmission pipe 24. Subsequently, the second transmission pipe 27 drives the stirring hose 290 to rotate in the fermentation tank 1, so that the stirring hose 290 moves and rotates in the fermentation tank 1. At the same time, air is supplied into the second transmission pipe 27 through an air supply mechanism. At this time, the second transmission pipe 27 fully passes the air into the waste material in the fermentation tank 1 through a plurality of capillary hoses 291 on the surface of the stirring hose 290, enabling the fermenting bacteria to carry out sufficient aerobic fermentation with the waste material. At the same time, during the rotation and movement process, the soft hairs 292 on the capillary hoses 291 will adhere to some fermenting bacteria, and the soft hairs 292 drive the fermenting bacteria to move, promoting the full fit of the fermenting bacteria with the raw materials, enabling the waste material to be fully fermented, and greatly improving the fermentation efficiency and fermentation effect of the waste material.

[0045] Working principle: The driving mechanism drives the first screw rods 11 in multiple directions to rotate. The multiple first screw rods 11 drive the material to reciprocate in the fermentation tank 1. At the same time, during the movement process, driven by the first screw rods 11, the waste materials are mutually squeezed and fused, further improving the mixing degree between the waste materials and the fermenting bacteria. At the same time, during the mixing process, the driving motor 12 drives the second screw rod 14 to rotate. The second screw rod 14 drives the material in the fermentation tank 1 to reciprocate, promoting the radial movement of the material in the fermentation tank 1, further improving the mixing degree between the waste materials and between the waste materials and the fermenting bacteria, and greatly improving the fermentation effect of the fermenting bacteria on the waste material.

[0046] The driving motor 12 drives the first transmission shaft 13 to rotate. The first transmission shaft 13 drives the second transmission shaft 21 to rotate through a transmission wheel and a transmission belt. The first transmission shaft 13 and the second transmission shaft 21 drive the first transmission pipe 24 to rotate through a first transmission gear 22 and a second transmission gear 23. The first transmission pipe 24 drives the second transmission pipe 27 to rotate through a spline sleeve 25 and a transmission block 26. The second transmission pipe 27 drives the stirring hose 290 to rotate. The electric telescopic rod 28 drives the connecting plate 29 to move. The connecting plate 29 drives the second transmission pipe 27 to move. The connecting plate 29 drives the second transmission pipe 27 and the transmission block 26 to slide on the spline sleeve 25. Subsequently, the second transmission pipe 27 drives the stirring hose 290 to enter the fermentation tank 1 from the first transmission pipe 24. Subsequently, the second transmission pipe 27 drives the stirring hose 290 to rotate in the fermentation tank 1, so that the stirring hose 290 moves and rotates in the fermentation tank 1. At the same time, air is supplied into the second transmission pipe 27 through a gas supply mechanism. At this time, the second transmission pipe 27 fully passes the air into the waste in the fermentation tank 1 through a plurality of capillary hoses 291 on the surface of the stirring hose 290, so that the fermenting bacteria and the waste carry out sufficient aerobic fermentation. At the same time, during the rotation and movement, the soft hairs 292 on the capillary hoses 291 will adhere to some fermenting bacteria, and the soft hairs 292 drive the fermenting bacteria to move, prompting the fermenting bacteria to fully adhere to the raw materials, so that the waste is fully fermented, greatly improving the fermentation efficiency and fermentation effect of the waste.

[0047] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for composting and fermenting garden waste, characterized in that, Comprising: A fermentation box (1) and a mounting plate (2) fixedly connected to the fermentation box (1), and a mounting box (3) is fixedly connected to one side of the fermentation box (1); A material mixing mechanism, which is arranged on the fermentation box (1) and the mounting plate (2), and is used for mixing the materials in the fermentation box (1); A bionic peristaltic mechanism, which is arranged on the mounting plate (2) and the mounting box (3), and is used for fermenting the materials in the fermentation box (1).

2. The garden waste composting and fermenting treatment device according to claim 1, characterized in that, The material mixing mechanism includes a plurality of first screw rods (11) rotatably connected to the fermentation box (1). A transmission motor (12) is fixedly connected to one side of the mounting plate (2). The output end of the transmission motor (12) is fixedly connected to a first transmission shaft (13) rotatably connected to the mounting plate (2) through a coupling. One end of the first transmission shaft (13) is fixedly connected to a second screw rod (14) rotatably connected to the fermentation box (1). The outer surface of the first screw rod (11) is drivingly connected to a driving mechanism connected to the fermentation box (1), and the driving mechanism is used to drive the first screw rod (11) to rotate; The outer surface of the first transmission shaft (13) is drivingly connected to the bionic peristaltic mechanism connected to the mounting plate (2) and the mounting box (3).

3. The garden waste composting and fermentation treatment device according to claim 2, wherein, The bionic peristaltic mechanism includes a plurality of second transmission shafts (21) rotatably connected to the mounting plate (2). The outer surfaces of the second transmission shafts (21) and the first transmission shaft (13) are drivingly connected through transmission wheels and transmission belts. First transmission gears (22) are fixedly sleeved on the outer surfaces of the first transmission shaft (13) and the second transmission shafts (21). A plurality of second transmission gears (23) are meshed with the outer surfaces of the first transmission gears (22). A first transmission pipe (24) rotatably connected to the mounting plate (2) is fixedly sleeved in the middle of the second transmission gears (23). One end of the first transmission pipe (24) is fixedly connected to a spline sleeve (25). A second transmission pipe (27) is slidably connected to the inner surface of the spline sleeve (25) through a transmission block (26). One end of the second transmission pipe (27) is fixedly connected to a stirring mechanism, and the stirring mechanism is used to stir the materials. An electric telescopic rod (28) is fixedly connected to one side of the mounting box (3). One end of the electric telescopic rod (28) is fixedly connected to a connecting plate (29) rotatably connected to the second transmission pipe (27). The other end of the second transmission pipe (27) is fixedly connected to a gas supply mechanism connected to the mounting box (3), and the gas supply mechanism is used to supply gas to the second transmission pipe (27).

4. The garden waste composting and fermenting treatment device according to claim 3, wherein, The stirring mechanism includes a stirring hose (290) fixedly connected to the second transmission pipe (27). A plurality of capillary hoses (291) are fixedly connected to the outer surface of the stirring hose (290). A plurality of soft hairs (292) are fixedly connected to the outer surface of the capillary hoses (291).

5. A device for composting and fermenting garden waste according to claim 3, characterized in that, The air supply mechanism includes a blower (31) fixedly connected to the installation box (3). The output end of the blower (31) is fixedly connected to the installation box (3) through a pipeline. A plurality of connecting hoses (32) are fixedly connected to one side of the installation box (3). One end of the connecting hose (32) is fixedly connected to a connecting pipe (33) rotatably connected to the second transmission pipe (27).

6. The garden waste composting and fermenting treatment device according to claim 2, characterized in that, The driving mechanism includes a driving motor (41) fixedly connected to the fermentation tank (1). The output end of the driving motor (41) is fixedly connected to a driving shaft (42) through a coupling. A first driving gear (43) is fixedly sleeved on the outer surface of the driving shaft (42). The outer surface of the first driving gear (43) is meshed with a second driving gear (44) fixedly sleeved on the first screw rod (11).

7. A device for composting and fermenting garden waste according to claim 1, characterized in that, A feed pipe (4) is fixedly connected to the top of the fermentation tank (1). An electromagnetic valve is arranged on the feed pipe (4).

8. A device for composting and fermenting garden waste according to claim 1, characterized in that, A cleaning door is rotatably connected to one side of the fermentation tank (1).