A farmer type high-efficiency composting reaction device for livestock and poultry manure fermentation

Abstract

The application discloses a farmer type high-efficiency composting reaction device for livestock and poultry manure fermentation, and relates to the technical field of agricultural waste treatment equipment, which comprises a reactor, a feeding port, a gas collecting port, a sludge discharging port and a liquid discharging port are arranged on the reactor, a stirring device is arranged in the reactor, the stirring device comprises a stirring shaft which is rotatably arranged in the reactor, an outer cylinder which is rotatably sleeved on the stirring shaft through a first sealing bearing, a ratchet mechanism which is arranged between the stirring shaft and the outer cylinder, a plurality of short-shaft stirring assemblies which are fixed on the stirring shaft and are distributed along the axial direction of the stirring shaft, and a long-shaft stirring assembly which is fixed on the outer cylinder. The device solves the contradiction between the initial penetration difficulty and the overall mixing deficiency of the existing single-shaft stirring device in the non-Newtonian fluid medium by simple forward and reverse switching.

Description

Technical Field

[0001] This invention relates to the field of agricultural waste treatment equipment technology, specifically to a household-type high-efficiency composting reactor for the fermentation of livestock and poultry manure. Background Technology

[0002] With the large-scale development of livestock and poultry farming in rural areas, the treatment of large quantities of livestock and poultry manure has become an urgent environmental problem. Anaerobic fermentation (composting) is an effective way to realize the resource utilization of livestock and poultry manure, which transforms organic waste into biogas and organic fertilizer through the metabolic action of anaerobic microorganisms. In household settings, small-scale anaerobic fermentation devices have broad application prospects due to their low cost and ease of operation.

[0003] Currently, the most widely used household biogas digesters in rural areas are water-pressure biogas digesters, whose basic structure includes a fermentation chamber, an inlet pipe, an outlet chamber, and a gas delivery pipe. These digesters generally lack an effective stirring mechanism, resulting in the following prominent problems in actual operation: Livestock and poultry manure (especially undiluted farmyard manure) has a high solids content and is a typical non-Newtonian fluid, exhibiting rheological characteristics of pseudoplastic or Bingham fluids. In a static state, its viscosity is extremely high, appearing as a slurry or even a paste; its fluidity only temporarily increases when subjected to shear force. Without stirring, severe concentration gradients and temperature stratification form within the fermentation chamber, with the upper layer floating to form scum and crust, and the lower layer settling to form a sludge dead zone, significantly reducing the effective fermentation volume.

[0004] Some existing technologies attempt to add agitation devices to biogas digesters, such as using a single-shaft agitator for circumferential rotational shearing. However, due to the non-Newtonian fluid characteristics of livestock and poultry manure, conventional single-shaft agitation has significant limitations: the agitator faces extremely high initial resistance during startup, resulting in low overall mass transfer efficiency. Simply increasing the agitation power or speed is neither economical nor safe for residential applications.

[0005] Therefore, it is necessary to provide a household-type high-efficiency composting reactor for the fermentation of livestock and poultry manure to solve the above problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a household composting device that can achieve efficient mixing under low power conditions, addressing the shortcomings of existing household biogas digesters that lack effective stirring or conventional single-shaft stirring that cannot effectively cope with the non-Newtonian fluid characteristics of livestock and poultry manure.

[0007] To solve the above problems, the present invention provides the following technical solution: a farmer-type high-efficiency composting reactor for livestock and poultry manure fermentation, comprising a reactor, wherein the reactor is provided with a feed inlet, a gas collection inlet, a sludge discharge outlet, and a liquid discharge outlet, and a stirring device is provided inside the reactor, the stirring device comprising: a stirring shaft, rotatably disposed inside the reactor; an outer cylinder, rotatably sleeved on the stirring shaft via a first sealed bearing; a ratchet mechanism, disposed between the stirring shaft and the outer cylinder, the ratchet mechanism being configured such that: when the stirring shaft rotates along a first rotation direction, the stirring shaft drives the outer cylinder to rotate synchronously through the ratchet mechanism; when the stirring shaft rotates along a second rotation direction opposite to the first rotation direction, the ratchet mechanism disengages the transmission connection between the stirring shaft and the outer cylinder, and the outer cylinder remains stationary; a plurality of short-shaft stirring assemblies, fixed on the stirring shaft and spaced apart along the axial direction of the stirring shaft; and a long-shaft stirring assembly, fixed on the outer cylinder.

[0008] Preferably, the reactor tank is integrally molded from black polyethylene material.

[0009] Preferably, a pressure relief pipe is also provided at the top of the reactor. The pressure relief pipe extends downward into the reactor from the top. The port of the pressure relief pipe inside the reactor is configured to be below the liquid level during use, and the port of the pressure relief pipe outside the reactor is at a height greater than 2m above the ground.

[0010] Preferably, an anaerobic chamber is provided on the outside of the reactor opposite the feed inlet. The anaerobic chamber is connected to an overflow prevention pipe. The anaerobic chamber includes an upward bend, and the overflow prevention pipe extends downward from above the bend.

[0011] Preferably, the feed inlet is connected to the upper side of the reactor at an angle of 45° relative to the horizontal plane, and the upper port of the feed inlet is equipped with an openable and closable cover.

[0012] Preferably, the sludge outlet is located 10cm above the ground of the reactor and is equipped with a ball valve; the liquid outlet is located at 1 / 4 of the total height of the reactor above the ground and is equipped with a valve.

[0013] Preferably, the gas collection port is connected to a barometer, a flow meter, and a gas collection device via a pipeline.

[0014] Preferably, the long-shaft stirring assembly includes: a plurality of connecting rods spaced apart circumferentially along the outer cylinder, one end of each connecting rod being horizontally connected to the outer cylinder; a scraper connected to the other end of the plurality of connecting rods; and a plurality of first stirring blades spaced apart along the length direction of the scraper, each first stirring blade corresponding to each of the short-shaft stirring assemblies.

[0015] Preferably, the short-shaft stirring assembly includes: a mounting cylinder, vertically fixed to the stirring shaft; a rotating shaft, rotatably connected to the mounting cylinder via a second sealed bearing; a second stirring blade, fixed to the rotating shaft; a sealing seat, fixed to the rotating shaft via an elastic sleeve, the sealing seat being rotatably connected to the mounting cylinder in a sealing manner; a cover plate, connected to the outside of the mounting cylinder and pressing against the elastic sleeve; and a resetter, disposed between the rotating shaft and the mounting cylinder.

[0016] Preferably, there is a gap between the second stirring blade and the first stirring blade, and a guide plate is fixed to the free end of the second stirring blade. The guide plate is configured to guide the material toward the direction of the first stirring blade when the stirring shaft rotates in the second rotation direction and the outer cylinder remains stationary.

[0017] Compared with the prior art, the present invention provides a farmer-type high-efficiency composting reactor for livestock and poultry manure fermentation, which has the following beneficial effects: In this invention, when the stirring shaft rotates along the second rotation direction, the ratchet mechanism is in a disengaged state, the outer cylinder remains stationary, and only the short-shaft stirring assembly rotates with the stirring shaft to locally shear and activate the material in the central region; when the stirring shaft rotates along the first rotation direction, the ratchet mechanism is in an engaged state, the outer cylinder rotates synchronously with the stirring shaft, and the long-shaft stirring assembly is driven to rotate to perform overall mixing of the material in the reactor, thus resolving the contradiction between the initial penetration difficulty and the overall mixing requirement in non-Newtonian fluid stirring.

[0018] This invention creates multiple shear zones along the height of the reactor by distributing short-shaft stirring components at intervals along the stirring shaft. This allows materials at different depths to be fully and locally activated, avoiding the axial mixing dead zones caused by only a single layer of stirring.

[0019] In this invention, the long-shaft stirring assembly is fixed to the outer cylinder rather than the stirring shaft, and does not participate in the movement at all during the forward phase, thus avoiding unnecessary power consumption; it is only driven when the overall stirring is required during the reverse phase, thus achieving a reasonable distribution of power. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a household-type high-efficiency composting reactor for the fermentation of livestock and poultry manure; Figure 2 A three-dimensional structural diagram of a household-type high-efficiency composting reactor for the fermentation of livestock and poultry manure; Figure 3 This is a schematic diagram of the stirring device in this invention; Figure 4 This is a schematic diagram of the short-shaft stirring assembly in this invention; In the diagram: 1. Reactor; 2. Stirring device; 3. Pressure relief pipe; 4. Gas collection port; 5. Feed inlet; 6. Anaerobic chamber; 7. Sludge outlet; 8. Liquid outlet; 9. Overflow prevention pipe; 21. Stirring shaft; 22. Outer cylinder; 23. First sealed bearing; 24. Ratchet mechanism; 25. Connecting rod; 26. Scraper; 27. First stirring blade; 28. Short shaft stirring assembly; 281. Mounting cylinder; 282. Rotating shaft; 283. Sealing seat; 284. Second sealed bearing; 285. Elastic sleeve; 286. Resetter; 287. Second stirring blade; 2871. Guide plate. Detailed Implementation

[0021] In the embodiments of the present invention, please refer to Figures 1-4 A high-efficiency composting reactor for livestock and poultry manure fermentation is provided, comprising a reactor 1, which is a tank structure with an internal fermentation space for containing livestock and poultry manure to be fermented. The reactor 1 is provided with a feed inlet 5, a gas collection inlet 4, a sludge outlet 7, and a liquid outlet 8. The feed inlet 5 is used to feed livestock and poultry manure raw materials into the reactor 1; the gas collection inlet 4 is used to export biogas generated during the fermentation process; the sludge outlet 7 is used to periodically discharge inert solid sludge deposited at the bottom of the tank; and the liquid outlet 8 is used to discharge liquid fertilizer produced after fermentation and composting.

[0022] The reactor 1 is equipped with a stirring device 2, which includes: a stirring shaft 21, rotatably mounted inside the reactor 1; specifically, the stirring shaft 21 is arranged along the vertical central axis of the reactor 1, with its upper end extending through the top of the reactor 1 and connected to an external drive source, which can be an electric motor or a manual crank. In the embodiment using an electric motor, the motor can be further connected to a photovoltaic panel to utilize solar power, thereby reducing operating energy consumption and adapting to rural outdoor use scenarios; the lower end of the stirring shaft 21 extends into the lower-middle area inside the reactor 1; and an outer cylinder 22, rotatably mounted on the stirring shaft 21 via a first sealed bearing 23. The first sealed bearing 23 bears the radial load of the outer cylinder 22 on one hand, and prevents solid particles and fibers from external materials from intruding into the bearing interior on the other hand, ensuring the reliability of long-term operation in sewage media. Since the outer cylinder 22 is located in the upper space of the reactor 1, it rarely comes into contact with the material. The ratchet mechanism 24 is located between the stirring shaft 21 and the outer cylinder 22. Specifically, the ratchet mechanism 24 is located in the axial space between the two sets of first sealed bearings 23. The ratchet mechanism 24 is a mechanical one-way clutch mechanism. Its driving element (e.g., ratchet seat) is fixedly connected to the stirring shaft 21, and its driven element (e.g., ratchet ring) is fixedly connected to the outer cylinder 22. When the stirring shaft 21 rotates in the second rotation direction (e.g., clockwise), the ratchet mechanism 24 is in the overrunning state, the driving element and the driven element are disengaged, and the outer cylinder 22 does not rotate with the stirring shaft 21. When the stirring shaft 21 rotates in the first rotation direction opposite to the second rotation direction (e.g., counterclockwise), the ratchet mechanism 24 is in the engaging state, the driving element drives the driven element to rotate synchronously, and the outer cylinder 22 rotates together with the stirring shaft 21.

[0023] It should be noted that the first and second rotation directions here are only used to indicate two opposite rotation directions, and are not limited to specific clockwise or counterclockwise rotation. The specific correspondence depends on the installation direction of the ratchet mechanism 24, which is an implementation detail that can be conventionally determined by those skilled in the art based on actual needs. Multiple short-shaft stirring components 28 are fixed on the stirring shaft 21 and are distributed at intervals along the axial direction of the stirring shaft 21. Each short-shaft stirring component 28 rotates synchronously with the stirring shaft 21. During the forward rotation phase, it performs local shearing and activation on the material. Since the short-shaft stirring components 28 are arranged in multiple layers along the axial direction, the material at different height levels in the reactor 1 can be sheared, avoiding stratification and dead zones of the material in the axial direction. The long-shaft stirring component is fixed on the outer cylinder 22. During the forward rotation phase, since the ratchet mechanism 24 is in a disengaged state, the outer cylinder 22 remains stationary, and the long-shaft stirring component does not participate in the movement. The power of the stirring device 2 is only used to drive the stirring shaft 21 and the short-shaft stirring components 28, and the power distribution is concentrated on the local penetration and activation of the material. During the reverse rotation phase, the ratchet mechanism 24 engages, the outer cylinder 22 rotates with the stirring shaft 21, and the long shaft stirring assembly is driven to make circumferential motion, which mixes the material that has been preliminarily activated in the reactor 1 over a wide range, so as to achieve overall mass and heat transfer.

[0024] In other words, the ratchet mechanism 24 enables selective transmission between the stirring shaft 21 and the outer cylinder 22, allowing the short-shaft stirring assembly 28 and the long-shaft stirring assembly to operate independently or collaboratively depending on their rotation direction. In the forward phase, power is concentrated on localized shearing in the central region, disrupting the paste-like static structure of the non-Newtonian fluid with minimal torque overhead. In the reverse phase, the long-shaft stirring assembly is driven to perform overall mixing after the material has been preliminarily activated. At this point, the effective viscosity of the material has decreased due to the forward shearing, thus reducing the starting resistance and operating power consumption of the long-shaft stirring assembly. This two-step synergy, through simple forward and reverse rotation switching, resolves the contradiction between initial penetration difficulties and insufficient overall mixing in non-Newtonian fluid media found in existing single-shaft stirring devices.

[0025] Furthermore, in this embodiment, the tank of reactor 1 is integrally molded from black polyethylene material. Black polyethylene material has the following advantages: First, the black surface has a high absorption rate for visible and near-infrared wavelengths in sunlight, effectively absorbing solar radiation heat under outdoor sunlight conditions, increasing the temperature of the material inside the tank, promoting the metabolic activity of anaerobic microorganisms, and improving fermentation efficiency; Second, polyethylene material itself has low thermal conductivity, and combined with the seamless structure of the integrally molded tank wall, the overall heat preservation performance of the tank is good, with small fluctuations with ambient temperature, which is conducive to maintaining temperature stability during the fermentation process; Third, polyethylene material has excellent resistance to acid and alkali corrosion, and can resist corrosive substances such as organic acids and ammonia nitrogen produced during the fermentation of livestock and poultry manure. It has a long service life, and the tank is lightweight, easy to transport and install, suitable for decentralized use by farmers. It should be noted that the integrally molded tank of black polyethylene material is a preferred embodiment of the present invention. Under the premise of meeting the usage requirements, those skilled in the art can also select other materials with appropriate light absorption and heat preservation properties according to actual needs.

[0026] Furthermore, in this embodiment, a pressure relief pipe 3 is also provided on the top of the reactor 1. The pressure relief pipe 3 extends downward from the top of the reactor 1 into the interior of the reactor 1. The port of the pressure relief pipe 3 located inside the reactor 1 is configured to be below the liquid surface during use, and the port of the pressure relief pipe 3 located outside the reactor 1 is at a height greater than 2m above the ground.

[0027] It should be explained that the inner port of the pressure relief pipe 3 extending below the liquid surface serves a dual function: First, it maintains the anaerobic environment inside reactor 1 using the liquid seal principle, preventing external air from entering the tank through the pressure relief pipe 3, thus ensuring normal metabolic conditions for strictly anaerobic microorganisms such as methanogens. Second, the depth below the liquid surface determines the pressure relief threshold; when the gas pressure inside the tank exceeds the hydrostatic pressure corresponding to that liquid column height, the gas is discharged through the pressure relief pipe 3, achieving automatic pressure relief. The setting of the outer port of the pressure relief pipe 3 at a height greater than 2m is based on safety considerations. In addition to the main component methane, biogas also contains toxic and harmful gases such as hydrogen sulfide. Hydrogen sulfide has a higher specific gravity than air and tends to accumulate near the ground. Setting the pressure relief port above 2m (above the height of the normal human breathing zone) allows the released harmful gases to diffuse and dilute at a higher position, avoiding harm to operators and surrounding livestock.

[0028] Furthermore, in this embodiment, an anaerobic chamber 6 is also provided on the outside of the reactor 1 opposite to the feed inlet 5. The anaerobic chamber 6 is connected to an overflow prevention pipe 9. The anaerobic chamber 6 includes an upward bend, and the overflow prevention pipe 9 extends downward from above the bend.

[0029] Furthermore, in this embodiment, the feed inlet 5 is connected to the upper side of the reactor 1 at a 45° angle relative to the horizontal plane, and the upper port of the feed inlet 5 is equipped with an openable and closable cover. The 45° inclination of the feed inlet 5 prevents the feed pipe from forming a right-angle bend, allowing the livestock and poultry manure raw material to slide smoothly into the tank along the inclined pipe wall under the action of gravity, making it less likely to accumulate and clog at the corner of the pipe. The openable and closable cover at the upper port remains closed when no material is being fed, serving multiple purposes such as preventing rainwater from entering the diluted material, preventing small animals from accidentally entering, and reducing the escape of odors from the tank.

[0030] Furthermore, in this embodiment, the sludge outlet 7 is located 10cm above the ground of the reactor 1 and is equipped with a ball valve; the liquid outlet 8 is located at 1 / 4 of the total height of the reactor 1 above the ground and is equipped with a valve.

[0031] Furthermore, in this embodiment, the gas collection port 4 is connected to a barometer, a flow meter, and a gas collection device via a pipeline. The barometer is used to read the gas pressure inside the reactor 1 in real time, allowing operators to judge the fermentation process and determine whether pressure relief is necessary. The flow meter measures the volume of biogas produced per unit time, providing a quantitative basis for evaluating fermentation efficiency. The gas collection device is a biogas storage bag or tank used to collect and temporarily store biogas for downstream use. Valves (e.g., shut-off valves or ball valves) configured in the pipeline are used to control the opening and closing of the gas passage.

[0032] Further, in this embodiment, the long-shaft stirring assembly includes: a plurality of connecting rods 25, spaced apart circumferentially along the outer cylinder 22, one end of each connecting rod 25 being horizontally connected to the outer cylinder 22; a scraper 26, connected to the other end of the plurality of connecting rods 25, the scraper 26 being a long strip-shaped plate extending along the height direction of the reactor 1, its outer edge close to the inner wall surface of the reactor 1. During the reverse rotation phase, the outer cylinder 22 rotates with the stirring shaft 21, and the scraper 26 moves circumferentially along the reactor 1, serving to scrape off the material adhering to the inner wall of the reactor 1 and to stir the material in the near-wall area; a plurality of first stirring blades 27, spaced apart along the length direction of the scraper 26, each first stirring blade 27 corresponding to each of the short-shaft stirring assemblies 28, that is, the first stirring blade 27 at each height level and the short-shaft stirring assembly 28 at that level are at approximately the same horizontal position. This corresponding setting allows the first stirring blade 27 and the short-shaft stirring assembly 28 to work together on the same horizontal plane during the reverse rotation phase. The circumferential rotation of the short-shaft stirring assembly 28 and the pushing of the first stirring blade 27 form a composite flow field, enhancing the mixing effect at this level.

[0033] Further, in this embodiment, the short-shaft stirring assembly 28 includes: a mounting cylinder 281, vertically fixed to the stirring shaft 21; a rotating shaft 282, rotatably connected to the mounting cylinder 281 via a second sealing bearing 284; a second stirring blade 287, fixed to the rotating shaft 282; a sealing seat 283, fixed to the rotating shaft 282 via an elastic sleeve 285, the sealing seat 283 being rotatably connected to the mounting cylinder 281 in a sealed manner; a cover plate, connected to the outside of the mounting cylinder 281, and pressing against the elastic sleeve 285; and a resetter 286, disposed between the rotating shaft 282 and the mounting cylinder 281.

[0034] During the rotation of the stirring shaft 21, the second stirring blade 287 is subjected to fluid resistance exerted by the material. This resistance varies in direction and magnitude in different areas of the second stirring blade 287. The resulting torque drives the rotating shaft 282 to deflect relative to the mounting cylinder 281, and the second stirring blade 287 subsequently changes its pitch angle.

[0035] Additionally, the resetter 286 is a component that provides elastic restoring torque. It can be any one or a combination of torsion springs, coil springs, sheet springs, or elastomer materials. One end of the resetter 286 is connected to the rotating shaft 282, and the other end is connected to the mounting cylinder 281 or cover plate. When the rotating shaft 282 deflects under the action of material resistance, the resetter 286 stores elastic potential energy; when the material resistance decreases, the resetter 286 releases the elastic potential energy, driving the rotating shaft 282 and the second stirring blade 287 to return to the initial angular position.

[0036] In other words, during the rotation of the stirring shaft 21, the mounting cylinder 281 fixed to the stirring shaft 21 moves circumferentially with the stirring shaft 21, thereby driving the rotating shaft 282 and the second stirring blade 287 to revolve within the reactor 1. During this revolve motion, the surface of the second stirring blade 287 is subjected to the fluid pressure of the material. Since the second stirring blade 287 can rotate freely around the horizontal axis of the rotating shaft 282, the torque generated by this pressure causes the second stirring blade 287 to pitch. In areas with high material resistance (e.g., areas with stagnant paste-like material), the second stirring blade 287 deflects at a larger angle, cutting into the material with a smaller frontal area and reducing instantaneous resistance. In areas with low material resistance (e.g., activated flow areas), the resetter 286 drives the second stirring blade 287 to return to its original position, generating a stronger propulsion effect with a larger frontal area. The combination of the pitching and revolving motion of the second stirring blade 287 produces an axial (vertical) pumping and diffusion effect.

[0037] Furthermore, in this embodiment, there is a gap between the second stirring blade 287 and the first stirring blade 27. A guide plate 2871 is fixed to the free end of the second stirring blade 287. The guide plate 2871 is configured to guide the material toward the direction of the first stirring blade 27 when the stirring shaft 21 rotates in the second rotation direction and the outer cylinder 22 remains stationary. Since the guide plate 2871 is fixed to the free end of the second stirring blade 287, it can rotate with the rotation of the second stirring blade 287.

[0038] In other words, during the forward rotation phase, only the short-shaft stirring assembly 28 rotates with the stirring shaft 21, while the outer cylinder 22 and the long-shaft stirring assembly remain stationary. The second stirring blade 287 performs local shearing and activation in the central region. The material that has been sheared and activated by this blade, under the directional guidance of the guide plate 2871, acquires an outward radial velocity component and is transported to the near-wall region where the first stirring blade 27 is located. Thus, at the end of the forward rotation phase, a layer of material that has undergone preliminary activation and viscosity reduction has been pre-arranged on the circumferential movement path of the first stirring blade 27.

[0039] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A farmer-type high-efficiency composting reactor for livestock and poultry manure fermentation, comprising a reactor (1), wherein the reactor (1) is provided with a feed inlet (5), a gas collection port (4), a sludge discharge port (7), and a liquid discharge port (8), characterized in that, The reactor (1) is equipped with a stirring device (2), which includes: A stirring shaft (21) is rotatably mounted inside the reactor (1); The outer cylinder (22) is rotatably mounted on the stirring shaft (21) via the first sealed bearing (23); A ratchet mechanism (24) is disposed between the stirring shaft (21) and the outer cylinder (22). The ratchet mechanism (24) is configured such that when the stirring shaft (21) rotates in a first rotation direction, the stirring shaft (21) drives the outer cylinder (22) to rotate synchronously through the ratchet mechanism (24); when the stirring shaft (21) rotates in a second rotation direction opposite to the first rotation direction, the ratchet mechanism (24) releases the transmission connection between the stirring shaft (21) and the outer cylinder (22), and the outer cylinder (22) remains stationary. Multiple short-shaft stirring assemblies (28) are fixed on the stirring shaft (21) and are spaced apart along the axial direction of the stirring shaft (21); A long-shaft stirring assembly is fixed to the outer cylinder (22); The long-shaft stirring assembly includes: Multiple connecting rods (25) are distributed circumferentially along the outer cylinder (22), and one end of each connecting rod (25) is horizontally connected to the outer cylinder (22). A scraper (26) is connected to the other end of the plurality of connecting rods (25); Multiple first stirring blades (27) are spaced apart along the length of the scraper (26); Each of the first stirring blades (27) is respectively provided corresponding to each of the short-shaft stirring assemblies (28); The short-shaft stirring assembly (28) includes: The mounting cylinder (281) is vertically fixed to the stirring shaft (21); The rotating shaft (282) is rotatably connected to the mounting cylinder (281) via a second sealed bearing (284); The second stirring blade (287) is fixed on the rotating shaft (282); The sealing seat (283) is fixed to the rotating shaft (282) by the elastic sleeve (285), and the sealing seat (283) is rotatably connected to the mounting cylinder (281); The cover plate is connected to the outside of the mounting cylinder (281) and presses against the elastic sleeve (285). A resetter (286) is disposed between the rotating shaft (282) and the mounting cylinder (281); There is a gap between the second stirring blade (287) and the first stirring blade (27).

2. The efficient, household-type composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, The tank of the reactor (1) is integrally formed from black polyethylene material.

3. The efficient, household-type composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, The reactor (1) is also provided with a pressure relief pipe (3) at the top. The pressure relief pipe (3) extends downward from the top of the reactor (1) into the interior of the reactor (1). The port of the pressure relief pipe (3) inside the reactor (1) is configured to be below the liquid surface during use. The port of the pressure relief pipe (3) outside the reactor (1) is at a height greater than 2m above the ground.

4. The efficient, household-type composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, An anaerobic chamber (6) is also provided on the outside of the reactor (1) opposite the feed inlet (5). The anaerobic chamber (6) is connected to an overflow pipe (9). The anaerobic chamber (6) includes an upward bend, and the overflow pipe (9) extends downward from above the bend.

5. A farmer-type high-efficiency composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, The feed inlet (5) is connected to the upper side of the reactor (1) at an angle of 45° relative to the horizontal plane, and the upper port of the feed inlet (5) is equipped with an openable and closable cover.

6. The efficient, household-type composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, The sludge outlet (7) is located 10cm above the ground of the reactor (1) and is equipped with a ball valve; the liquid outlet (8) is located at 1 / 4 of the total height of the reactor (1) above the ground and is equipped with a valve.

7. The efficient, household-type composting reactor for livestock and poultry manure fermentation according to claim 1, characterized in that, The gas collection port (4) is connected to a barometer, a flow meter and a gas collection device via a pipeline.

8. A high-efficiency composting reactor for livestock and poultry manure fermentation for farmers, as described in claim 1, is characterized in that... The free end of the second stirring blade (287) is fixed with a guide plate (2871), which is configured to guide the material toward the direction of the first stirring blade (27) when the stirring shaft (21) rotates in the second rotation direction and the outer cylinder (22) remains stationary.

Images