Compost treatment device and method for livestock manure

Abstract

The invention belongs to the technical field of compost treatment, and discloses a compost treatment device and method for livestock manure, and the compost treatment device comprises a device shell, a partition plate, a material turning power device, a lifting rod, a pneumatic device, a material turning plate and an aeration shaft, the partition plates are arranged on the two sides of the material turning plate in pairs and divide a cavity in the device shell into a middle cavity and a side face flow channel from inside to outside. One side of the material turning plate is rotationally connected with the aeration shaft through a hinge structure, the pneumatic device is a pneumatic telescopic rod, the lower end of the pneumatic device is fixed to the aeration shaft, the upper end of the pneumatic device is hinged to the upper end of the connecting plate structure through a connecting structure, and the lower end of the connecting plate structure is hinged to the top face of the material turning plate; the aeration pipe cavity is communicated with an aeration air supply system, and the aeration shaft and the pneumatic device are connected to the aeration pipe cavity in parallel through a three-way control valve. Original bottom layer anoxic materials can be lifted to a proper position by the material turning plate, and aeration and directional oxygenation are carried out at the original bottom layer material position while the materials are allowed to fall naturally.

Description

Technical Field

[0001] The present invention belongs to the technical field of composting treatment, and in particular relates to a device and method for composting livestock manure. Background Art

[0002] In existing technologies, aerobic composting is often used for composting livestock manure, among which windrow, trough, or static bin composting still dominates. This type of process is generally plagued by the following problems: insufficient turning depth and uniformity, which can easily form anaerobic zones at the bottom, leading to increased NH3 and H2S emissions and a fermentation cycle of up to 30-40 days. Some composting devices use horizontal rotating paddles or spiral blades, which can only achieve radial or unidirectional turning, and cannot accurately lift oxygen-deficient materials at the bottom to the upper layer. At the same time, these turning mechanisms affect aeration settings, especially the difficulty of setting up a suitable aeration mechanism in the middle, which is not only difficult to deploy but also easily hinders the movement of the turning mechanism. In addition, because the aeration point is fixed, it cannot be dynamically adjusted according to the "bottom-to-surface" material exchange position. The lack of active control measures leads to large fluctuations in compost quality. More importantly, while existing static composting technologies can promote composting by applying a low-voltage DC electric field—the principle being that the electric field promotes extracellular electron transfer in microorganisms, increasing dehydrogenase activity and the rate of organic matter degradation—they fix the electrode plates to the side walls of the compost bin, preventing them from moving with changes in the pile height. This significantly impacts their effectiveness. This is because changes in the liquid composition and aeration process in the compost can affect the volume of the material. Existing technologies only fix the electrode plates to the side walls, preventing them from moving with changes in the pile height, limiting the range of the electric field. Furthermore, improper placement of the electric field electrodes can hinder the operation of the turning mechanism. Summary of the Invention

[0003] The purpose of the present invention is to provide a composting device and method for livestock manure, which is used to solve the technical problems that the existing technology cannot combine driving turning, aeration and electrode position setting to achieve the dual effects of system simplification and energy consumption reduction; during the turning process, it is difficult to control the degree and position of lifting and turning the original oxygen-deficient material at the bottom according to the amount of material in the device and actual needs, and it is impossible to perform direct supplementary aeration for the position of the original oxygen-deficient material at the bottom after turning.

[0004] The composting device for livestock manure comprises a device shell, a partition plate, a turning power device, a lifting rod, a pneumatic device, a turning plate and an aeration shaft. The partition plates are arranged in pairs on both sides of the turning plate to divide the chamber in the device shell into an intermediate chamber and a side flow channel from the inside to the outside; one side of the turning plate is rotatably connected to the aeration shaft through a hinge structure, and the pneumatic device is a pneumatic telescopic rod. The lower end of the pneumatic device is fixed on the aeration shaft and the upper end is hinged to the upper end of the connecting plate structure through a connecting structure. The lower end of the connecting plate structure is hinged to the top surface of the turning plate. The aeration tube cavity is connected to each other, and an aeration tube cavity is provided inside the lifting rod. The aeration tube cavity is connected to the aeration air supply system, and the aeration shaft and the pneumatic device are connected to the aeration tube cavity in parallel through a three-way control valve; in the turning stage, the aeration tube cavity is connected to the side air port to supply air to the pneumatic device, and the pneumatic device drives the turning plate to maintain a horizontal state. At this time, the outer side of the turning plate is in contact with the side wall of the partition plate; in the plate closing stage, the aeration tube cavity is connected to the lower air duct, and air is aerated outward from the aeration hole on the aeration shaft. The pneumatic device contracts to let the turning plate hang down, allowing the material above to fall.

[0005] Preferably, the pneumatic device is vertically arranged on the aeration shaft, the aeration tube cavity is connected to the lower air duct and the side air port respectively through a three-way control valve, the lower air duct is connected to the aeration center cavity in the aeration shaft, the side air port is connected to the air inlet of the pneumatic device through a hose, the air outlet of the pneumatic device is connected to the return air port on the side of the lifting rod through a hose, and the return air port is connected to the outside world through the return air duct in the lifting rod and the switch valve.

[0006] Preferably, the plate body of the partition plate is arranged vertically, a flow channel lower groove is provided at the bottom of the plate body, and an flow channel upper groove is provided at the upper part of the plate body.

[0007] Preferably, a plurality of guide grooves extending from one side close to the telescopic rod to the other side are provided on the top of the turning plate.

[0008] Preferably, the lower side of the flip plate on the outer side is an arc-shaped rounded structure.

[0009] Preferably, a plurality of electric field electrodes 1 are provided at the bottom of the turning plate. The electric field electrodes 1 are flat plate structures and are opposite to the electric field electrodes 2 located on the bottom of the device housing.

[0010] Preferably, the lower end of the pneumatic device is a sleeve fixedly mounted on the aeration shaft, and the upper end of the pneumatic device is provided with a connecting structure extending in the extending direction of a pair of flipping plates, and the connecting structure extends symmetrically on both sides of the upper cylinder of the pneumatic device. The connecting structure is T-shaped, and hinge shafts are provided at both ends of the horizontally extending part, and the hinge shaft is rotatably connected to the upper end of the connecting rod structure.

[0011] Preferably, the material turning power device is fixedly installed on the top of the device housing, and the telescopic end of the material turning power device is coaxially fixedly connected to the lifting rod; there are also air vents and an observation window that can be opened and closed on the device housing.

[0012] The present invention also provides a composting method for livestock manure, which uses the above-mentioned composting device for livestock manure and comprises the following steps:

[0013] Step 1: Loading the material formed by livestock manure into the device housing;

[0014] Step 2: Arrange the electric field electrode 1 on the turning plate so that it contacts the top surface of the material;

[0015] Step 3: energizing each electric field electrode to realize a static composting reaction under an electric field;

[0016] Step 4: Perform the turning action regularly. Initially, place the naturally hanging turning plate at the bottom of the device until it is horizontally unfolded.

[0017] Step 5: Ventilate the pneumatic device to keep the turning plate in a horizontal state, and raise the turning plate to turn the material through the side flow channel, which is the turning stage;

[0018] Step 6: Then, the pneumatic device is retracted by switching the air path, and the flip plate is naturally dropped, which is the plate closing stage. At the same time, the switched air path allows the high-pressure gas for aeration to be aerated outward from the dropped position of the flip plate;

[0019] Next, return to step 2 to achieve the reset stage after the board closing stage. After the reset, the circuit can be reconnected to allow the electric field electrode 1 and the electric field electrode 2 located at the top and bottom of the material to re-apply the electric field.

[0020] Preferably, in the fourth step, when turning the material, the power supply to the electric field electrode is first stopped, and then the gas in the pneumatic device is first exhausted and the gas supply is stopped, and the structure of the turning plate naturally hanging down is lowered to the bottom surface of the device housing, and the structure continues to be lowered until the telescopic rod is lowered to the bottom, at which time the turning plate is expanded outward and is in a horizontal state;

[0021] In step five, the aeration air supply system provides high-pressure gas to the pneumatic device again, and the lifting rod is raised while the flipping plate is kept in a horizontal state. The flipping plate is kept in a horizontal state and fits against the partition plate, so that the material in the upper part of the middle chamber can pass through the upper groove of the flow channel while rising, so that the upper material can flow back to the lower space of the middle chamber through the side flow channel, and the material originally located in the middle and lower layers is lifted to the middle and upper layers, thereby realizing material flipping.

[0022] The advantages of this invention lie in its operation through an integrated air source drive mechanism and the phased reuse of the aeration air source via a three-way control valve. During the turning phase, air enters the pneumatic device, driving the turning plate to maintain a horizontal position and elevate the material. During the plate retraction phase, air is switched to the aeration shaft, achieving in-situ aeration, where the turning plate is just lowered. During the reset phase, air pressure controls the turning plate to maintain a horizontal position, and the electric field electrodes are raised and lowered to ensure proper contact with the top of the material, ensuring the proper functioning of the electric field.

[0023] After the improvement, the present invention can raise and lower the flipping plate according to the amount of material observed, and the partition plate + side flow channel structure enables the material to form a closed cycle of "inner rise-outer fall" in the vertical direction; the original bottom oxygen-deficient material can be lifted to a suitable position by the flipping plate, and while allowing the material on the flipping plate to fall naturally, the aeration shaft is made to aerate just at the position of the "original bottom material", directionally increasing oxygen, thereby effectively controlling the fluctuation range of the oxygen concentration in the pile.

[0024] This structure also uses a lifting rod to control the position of the first electric field electrode during static composting. The first electric field electrode is fixed to the bottom of the turning plate and moves up and down with the lifting rod; the second electric field electrode is fixed to the bottom of the shell. This improves composting efficiency during static composting, preventing the problem of the electric field electrode not effectively contacting the material, resulting in a loss of the electric field that promotes composting.

[0025] Compared with existing technologies, this approach eliminates the need for a separate blower and supporting piping, reducing system energy consumption and equipment costs. Most importantly, it avoids interference between the complex aeration structure and the material turning mechanism, simplifying the device's design. Furthermore, the present invention features a compact structure and easy maintenance. The top of the housing retains only the electric cylinder and air vents, while material turning, aeration, and electrode lifting are all integrated into the lift rod / aeration shaft complex, making maintenance easy. Material levels can be monitored through an observation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a system structure diagram of a composting device and method for livestock manure.

[0027] Figure 2 for Figure 1 Schematic diagram of the structure inside the device shell in the structure shown.

[0028] Figure 3 for Figure 2 Schematic diagram of the structure of each structure except the partition plate in the plate closing stage.

[0029] Figure 4 for Figure 3 Magnified view of region A in the shown structure.

[0030] Figure 5 for Figure 2Schematic diagram of the structure of the bottom of the flip plate in the structure shown.

[0031] The reference numerals in the accompanying drawings include: 1 device housing, 2 material turning power device, 3 partition plate, 301 plate body, 302 upper through groove of flow channel, 303 lower groove of flow channel, 4 material turning plate, 401 guide groove, 402 arc fillet, 403 electric field electrode one, 5 aeration shaft, 501 aeration hole, 6 pneumatic device, 601 pneumatic telescopic rod, 602 connecting plate structure, 603 hose, 604 connecting structure, 7 lifting rod, 701 side air port, 702 return air port, 8 electric field electrode two. DETAILED DESCRIPTION

[0032] The specific implementation methods of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0033] like Figure 1-Figure 5 As shown, the present invention provides a composting device for livestock manure, comprising a device shell 1, a partition plate 3, a turning power device 2, a lifting rod 7, a pneumatic device 6, a turning plate 4 and an aeration shaft 5, wherein the partition plates 3 are arranged in pairs on both sides of the turning plate 4 to divide the chamber in the device shell 1 into an intermediate chamber and a side flow channel from the inside to the outside; one side of the turning plate 4 is rotatably connected to the aeration shaft 5 through a hinge structure, and the pneumatic device 6 is a pneumatic telescopic rod 601, the lower end of the pneumatic device 6 is fixed on the aeration shaft 5 and the upper end is hinged to the upper end of the connecting plate structure 602 through a connecting structure 604, and the lower end of the connecting plate structure 602 is connected to the The top surface of the flipping plate 4 is hingedly connected, and an aeration tube cavity is provided inside the lifting rod 7. The aeration tube cavity is connected to the aeration air supply system, and the aeration shaft 5 and the pneumatic device 6 are connected to the aeration tube cavity in parallel through a three-way control valve; in the flipping stage, the aeration tube cavity is connected to the side air port 701 to supply air to the pneumatic device 6, and the pneumatic device 6 drives the flipping plate 4 to maintain a horizontal state. At this time, the outer side of the flipping plate 4 is in contact with the side wall of the partition plate 3; in the plate closing stage, the aeration tube cavity is connected to the lower air duct, and air is aerated outward from the aeration hole 501 on the aeration shaft 5. The pneumatic device 6 contracts to allow the flipping plate 4 to hang down, allowing the material above to fall.

[0034] The plate body 301 of the partition plate 3 is arranged vertically, with a lower channel groove 303 provided at the bottom of the plate body 301 and an upper channel groove 302 provided at the upper portion of the plate body 301. When the flip plate 4, which is maintained in a horizontal state, lifts the material in the middle chamber upward, the flip plate 4 drives the material in the middle chamber upward as a whole. At this time, a space not filled with material is generated at the bottom of the flip plate 4. The lifted material flows outward through the upper channel groove 302 into the side channel. The material in the side channel also flows into the middle chamber through the lower channel groove 303 at the same time. This process continues, allowing the material in the upper portion of the middle chamber to continuously flow back through the side channel to the bottom of the flip plate 4, thus completing the material flipping process.

[0035] The pneumatic device 6 is vertically arranged on the aeration shaft 5, and the aeration tube cavity is connected to the lower air duct and the side air port 701 respectively through a three-way control valve. The lower air duct is connected to the aeration center cavity in the aeration shaft 5, and the side air port 701 is connected to the air inlet of the pneumatic device 6 through a hose 603. The air outlet of the pneumatic device 6 is connected to the return air port 702 on the side of the lifting rod 7 through a hose 603. The return air port 702 is connected to the outside world through the return air duct in the lifting rod 7 and the switch valve. Through this structure, when the material turning action is carried out, when the lifting rod 7 rises from the bottom to turn the material, the aeration air supply system provides air pressure to the pneumatic device 6, so that the pneumatic device 6 can pull up the turning plate 4, ensuring that the turning plate 4 can lift the material above it, and when it reaches the turning position, that is, the upper middle part of the partition plate 3, the air path is switched by the three-way control valve, and the aeration gas is transported to the aeration shaft 5 through the lower airway by pressure, so that the material outside can be aerated at the corresponding position, that is, aeration is carried out at the height at which the material falls. Above this position is the material at the bottom of the raw material, so aeration at this position can be targeted to carry out additional aeration for the original bottom material that lacks oxygen, thereby improving the fermentation and composting speed of this part of the material.

[0036] The top of the flip plate 4 is provided with a plurality of guide grooves 401 extending from one side close to the telescopic rod to the other side. By providing the guide grooves 401, when the pneumatic device 6 is retracted, the material on the top surface of the flip plate 4 can flow downward more quickly and conveniently, thereby quickly filling the space below and preventing excessive material from being carried upward and flowing into the side flow channel.

[0037] The outward-facing lower edge of the flip plate 4 is formed with an arc-shaped rounded corner 402. This structure allows the flip plate 4 to naturally droop and be placed at the bottom of the device housing 1. This rounded corner 402 contacts the bottom of the device housing 1 and, as the flip plate 4 is lowered further, acts on the underside of the flip plate 4, causing it to slide outward. This allows the flip plate 4 to gradually level and fall to the bottom of the device housing 1, preparing for the subsequent flipping operation.

[0038] The bottom of the material turning plate 4 is provided with a plurality of electric field electrodes 403. These electrodes 403 are flat plates and are positioned opposite electric field electrodes 8 located on the bottom of the device housing 1. The power supply circuits of these electrodes 403 are connected to the external electric field power supply system via conductors within the aeration shaft 5 and conductors within the lifting rod 7. Electric field electrodes 8 are also flat plates and are connected to the external electric field power supply system via conductors at the bottom of the device housing 1.

[0039] The lower end of the pneumatic device 6 is a sleeve fixedly mounted on the aeration shaft 5. The upper end of the pneumatic device 6 is provided with a connecting structure 604 extending in the direction of extension of the pair of flippers 4. The connecting structure 604 extends symmetrically on both sides of the upper cylinder of the pneumatic device 6. The connecting structure 604 is T-shaped, and hinges are provided at both ends of the horizontally extending portion. The hinges are rotatably connected to the upper end of the connecting rod structure. A hinge seat is fixed to the top of the flipper 4, and the hinge seat is rotatably connected to the lower end of the connecting rod structure via a shaft.

[0040] The material turning power device 2 is an electric cylinder or other power device capable of driving the lifting rod 7 to move up and down. When an electric cylinder is used, the material turning power device 2 is fixedly mounted on the top of the device housing 1, and the telescopic end of the electric cylinder is coaxially fixedly connected to the lifting rod 7. The device housing 1 also has a ventilation hole and an observation window that can be opened and closed.

[0041] The present invention also provides a composting method for livestock manure, which comprises the following steps.

[0042] Step 1: Load the material formed by livestock manure into the device shell 1.

[0043] The compost material formed after the livestock manure is initially treated and mixed is loaded into the device housing 1 provided with a partition plate 3 .

[0044] Step 2: Arrange the electric field electrode 1 403 on the turning plate 4 so that it contacts the top surface of the material.

[0045] In this step, the flipping plate 4 is naturally lifted up to separate from the top surface of the material, and then the high-pressure gas is driven to push up the pneumatic device 6 through the three-way control valve to maintain the horizontal state of the flipping plate 4, and then the lifting rod 7 is lowered to make the electric field electrode 403 on the bottom surface of the flipping plate 4 contact the top surface of the material.

[0046] Step 3: Power is supplied to each electric field electrode to realize a static composting reaction under the electric field.

[0047] The electric field electrodes include electric field electrode 1 403 and electric field electrode 2 8. This step applies power to electric field electrode 1 403 and electric field electrode 2 8 to form an electric field, and then allows static fermentation and composting. This step accelerates the fermentation of the material between the two electric field electrodes by applying an electric field, thereby improving the composting effect.

[0048] Step 4: Perform the turning action regularly. Initially, place the naturally hanging turning plate 4 at the bottom of the device until the turning plate 4 is horizontally unfolded.

[0049] When turning the material, first stop the power supply of the electric field electrode, then exhaust the gas in the pneumatic device 6, and stop the gas supply, and lower the naturally hanging structure of the turning plate 4 to the bottom surface of the device shell 1, and continue to lower it until the telescopic rod is lowered to the bottom. At this time, the turning plate 4 is expanded outward and is in a horizontal state.

[0050] Step 5: Ventilate the pneumatic device 6 to keep the turning plate 4 in a horizontal state, and lift the turning plate 4 to turn the material through the side flow channel, that is, the turning stage.

[0051] Next in this step, the aeration air supply system provides high-pressure gas to the pneumatic device 6 again, and the lifting rod 7 is raised while keeping the flipping plate 4 in a horizontal state. The flipping plate 4 is horizontally attached to the partition plate 3, so that the material in the upper part of the middle chamber can pass through the upper groove 302 of the flow channel while rising, so that the upper material can flow back to the lower space of the middle chamber through the side flow channel, and the material originally located in the middle and lower layers is lifted to the middle and upper layers, thereby realizing material flipping.

[0052] Step 6: Then, the pneumatic device 6 is contracted by switching the air circuit, and the flip plate 4 is naturally dropped, i.e., the plate closing stage. At the same time, the switched air circuit allows the high-pressure gas for aeration to be aerated outward from the dropped position of the flip plate 4.

[0053] In this step, because the material-turning plate 4 drops down at the gas path switching position, the material above does not need to rise and flow out through the upper channel slot 302. As a result, the material naturally falls. The material originally in the middle and lower layers reaches the upper layer and no longer flows outward to the lower part of the middle chamber. Simultaneously, aeration begins through the aeration shaft 5, directly above the material originally at the bottom. This aeration effectively accelerates the composting of the material originally in the middle and lower layers.

[0054] Next, return to step 2 to achieve the reset stage after the plate closing stage. After the reset, the circuit can be reconnected, allowing the electric field electrode 1 403 and the electric field electrode 2 8 located at the top and bottom of the material to re-apply the electric field, so that the speed and efficiency of the static fermentation composting process are guaranteed.

[0055] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the inventive concept and technical solution of the present invention, or the inventive concept and technical solution are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A composting device for livestock manure, characterized by: The pneumatic device comprises a device shell, a partition plate, a material turning power device, a lifting rod, a pneumatic device, a material turning plate and an aeration shaft. The partition plates are arranged in pairs on both sides of the material turning plate to divide the chamber in the device shell into an intermediate chamber and a side flow channel from the inside to the outside; one side of the material turning plate is rotatably connected to the aeration shaft through a hinge structure, and the pneumatic device is a pneumatic telescopic rod. The lower end of the pneumatic device is fixed on the aeration shaft and the upper end is hinged to the upper end of the connecting plate structure through a connecting structure. The lower end of the connecting plate structure is hinged to the top surface of the material turning plate. The lifting rod An aeration lumen is provided inside, and the aeration lumen is connected to the aeration air supply system. The aeration shaft and the pneumatic device are connected in parallel to the aeration lumen through a three-way control valve. In the turning stage, the aeration lumen is connected to the side air port to supply air to the pneumatic device, and the pneumatic device drives the turning plate to maintain a horizontal state. At this time, the outer side of the turning plate is in contact with the side wall of the partition plate. In the plate closing stage, the aeration lumen is connected to the lower air duct, and air is aerated outward from the aeration holes on the aeration shaft. The pneumatic device contracts to allow the turning plate to hang downward, allowing the material above to fall.

2. The composting device for livestock manure according to claim 1, characterized in that: The pneumatic device is vertically arranged on the aeration shaft, and the aeration tube cavity is connected to the lower air duct and the side air port respectively through a three-way control valve. The lower air duct is connected to the aeration center cavity in the aeration shaft, and the side air port is connected to the air inlet of the pneumatic device through a hose. The air outlet of the pneumatic device is connected to the return air port on the side of the lifting rod through a hose. The return air port is connected to the outside world through the return air duct in the lifting rod and a switch valve.

3. The composting device for livestock manure according to claim 2, characterized in that: The plate body of the partition plate is vertically arranged, the bottom of the plate body is provided with a flow channel lower groove, and the upper part of the plate body is provided with a flow channel upper groove.

4. The composting device for livestock manure according to claim 2, characterized in that: A plurality of guide grooves extending from one side close to the telescopic rod to the other side are provided on the top of the turning plate.

5. The composting device for livestock manure according to claim 2, characterized in that: The lower side of the turning plate on the outer side is an arc-shaped rounded structure.

6. The composting device for livestock manure according to claim 2, characterized in that: A plurality of electric field electrodes 1 are provided at the bottom of the turning plate. The electric field electrodes 1 are flat plate structures and are opposite to the electric field electrodes 2 located on the bottom of the device housing.

7. The composting device for livestock manure according to claim 2, characterized in that: The lower end of the pneumatic device is a sleeve fixedly connected to the aeration shaft. The upper end of the pneumatic device is provided with a connecting structure extending in the extending direction of a pair of flipping plates. The connecting structure extends symmetrically on both sides of the upper cylinder of the pneumatic device. The connecting structure is T-shaped, and hinge shafts are provided at both ends of the horizontally extending part. The hinge shaft is rotatably connected to the upper end of the connecting rod structure.

8. The composting device for livestock manure according to claim 1, characterized in that: The material turning power device is fixedly installed on the top of the device shell, and the telescopic end of the material turning power device is coaxially fixedly connected with the lifting rod; and the device shell is also provided with an air vent and an observation window that can be opened and closed.

9. A composting method for livestock manure, characterized in that: A composting device for livestock manure according to any one of claims 1 to 8 is used, comprising the following steps: Step 1: Loading the material formed by livestock manure into the device housing; Step 2: Arrange the electric field electrode 1 on the turning plate so that it contacts the top surface of the material; Step 3: energizing each electric field electrode to realize a static composting reaction under an electric field; Step 4: Perform the turning action regularly. Initially, place the naturally hanging turning plate at the bottom of the device until it is horizontally unfolded. Step 5: Ventilate the pneumatic device to keep the turning plate in a horizontal state, and raise the turning plate to turn the material through the side flow channel, which is the turning stage; Step six: After that, the pneumatic device is contracted by switching the air circuit, and the flipping plate is allowed to fall naturally, which is the plate closing stage. At the same time, the switched air circuit allows the high-pressure gas used for aeration to aerate outward from the falling position of the flipping plate; then, return to step two to realize the reset stage after the plate closing stage. After the reset, the circuit can be reconnected to allow the electric field electrode 1 and the electric field electrode 2 at the top and bottom of the material to re-apply the electric field.

10. The composting method for livestock manure according to claim 9, characterized in that: In step 4, when turning the material, the power supply to the electric field electrode is first stopped, and then the gas in the pneumatic device is exhausted and the gas supply is stopped. The structure of the turning plate naturally hanging down is lowered to the bottom surface of the device housing, and the turning plate is continued to be lowered until the telescopic rod is lowered to the bottom. At this time, the turning plate is expanded outward and is in a horizontal state; In step five, the aeration air supply system provides high-pressure gas to the pneumatic device again, and the lifting rod is raised while the flipping plate is kept in a horizontal state. The flipping plate is kept in a horizontal state and fits against the partition plate, so that the material in the upper part of the middle chamber can pass through the upper groove of the flow channel while rising, so that the upper material can flow back to the lower space of the middle chamber through the side flow channel, and the material originally located in the middle and lower layers is lifted to the middle and upper layers, thereby realizing material flipping.

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