Livestock manure composting processing anaerobic fermentation recycling device

Abstract

The present application relates to the technical field of compost fermentation, in particular to an anaerobic fermentation recycling device for livestock manure compost processing, which comprises a fermentation tank, a stirring unit, a buffer unit and a driving assembly. In the present application, the shearing stirring of traditional material contact is changed into low-shear or non-shear stirring mode through the protection of the air bag on the blade, so as to avoid the damage to microorganisms in the stirring process. Secondly, through the formation of a short cavity and stirring action, the small bubbles carrying heat in the deep material are assisted to escape, the heat is effectively transferred, and the gas collection process is assisted. Through the external circulation system of the integrated pipe, the escaped gas in the deep material is effectively collected while the temperature is controlled. In summary, under the condition of protecting microorganisms, the overall heat dissipation effect and gas collection efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of composting fermentation technology, specifically to an anaerobic fermentation and reuse device for composting livestock and poultry manure. Background Technology

[0002] Anaerobic fermentation for the reuse of livestock and poultry manure composting refers to the process of decomposing and transforming organic matter in manure using anaerobic microorganisms (i.e., bacteria) under sealed and anaerobic conditions, while producing biogas and biogas residue. The existing fermentation process is as follows: the material is anaerobically fed into the fermentation tank and sealed, and stirred and fermented at a constant temperature (35-55 degrees Celsius). Through the decomposition of the material by microorganisms, the organic matter is finally converted into biogas after stages such as hydrolysis, acidification, and methanogenesis.

[0003] Currently, existing fermentation tanks are commonly used for manure composting. In order to ensure that microorganisms or cells are in full contact with the material, the material needs to be continuously stirred during the fermentation process. In existing technologies, multiple stirring blades are usually installed inside the tank. The material is stirred by physical direct contact through the rotation of the blades, which helps the microorganisms to fully contact and promotes heat transfer.

[0004] The following problems exist in the existing fermentation process: In the existing stirring method, the stirring blades generate fluid shear force during stirring. This force will damage microorganisms during stirring, thereby causing some microorganisms to become inactive and affecting the subsequent fermentation effect. In addition, during the fermentation process, the existing simple blade stirring is difficult to allow the gas deep in the material to escape, resulting in poor overall heat dissipation and gas collection effects, and the poor heat dissipation effect is likely to affect the survival temperature of microorganisms. Summary of the Invention

[0005] Therefore, it is necessary to provide an anaerobic fermentation and reuse device for composting livestock and poultry manure, which aims to solve the problems of the prior art.

[0006] This application provides an anaerobic fermentation and reuse device for composting livestock and poultry manure, comprising: a fermentation tank, an exhaust pipe on the upper side of the fermentation tank, a stirring unit inside the fermentation tank, the stirring unit including a stirring shaft, a stirring shaft with a vertical axis rotatably mounted on the fermentation tank, and multiple fixed rings equidistantly distributed vertically on the stirring shaft located inside the fermentation tank, with multiple circumferentially distributed blades fixedly mounted on the fixed rings.

[0007] The stirring shaft is equipped with a buffer unit, which includes an air bladder covering the surface of the blades. An inflation chamber is opened inside the stirring shaft, and the air bladder is connected to the inflation chamber. Before the blades are stirred, the air bladder inflates to cover the blades.

[0008] The fermenter is equipped with multiple auxiliary units on its outside to assist in the release of biogas during the stirring process. Each auxiliary unit includes an integrated pipe. An integrated pipe is fixedly installed on the outside of the fermenter. An auxiliary pipe communicating with the inner cavity of the fermenter is installed at the position opposite to the fixed ring of the integrated pipe. The upper end of the integrated pipe is connected to the gas outlet pipe through a collection pipe.

[0009] The fermenter is equipped with a drive assembly, which includes a lifting cylinder. The bottom of the fermenter is equipped with a lifting cylinder for driving the stirring shaft to move up and down. All blades on the same fixed ring are fixed with a common ring, and the connection status of the auxiliary pipe is controlled by the up and down movement of the ring.

[0010] According to an advantageous embodiment, a rotating sleeve is rotatably provided on the top of the fermenter, and the rotating sleeve is slidably connected to the stirring shaft. A toothed ring is fixedly fitted on the rotating sleeve, and a gear that meshes with the toothed ring is rotatably provided on the upper side of the fermenter via a drive shaft.

[0011] The bottom of the fermenter is fixedly equipped with a fixed pile that is larger at the top and smaller at the bottom. The stirring shaft is movably mounted on the upper side of the fixed pile. The telescopic end of the lifting cylinder passes through the fixed pile from the bottom of the fermenter and is connected to the lower end of the stirring shaft.

[0012] According to an advantageous embodiment, a plurality of connecting posts are fixedly provided on the circumferential surface of the fixing ring, the blades are fixed to the corresponding connecting posts, and the edges of the blades are all chamfered.

[0013] The blade and the corresponding connecting post have a common connecting cavity that communicates with the inflation chamber. The opening of the connecting cavity on the blade is connected to the airbag through a connecting pipe.

[0014] According to an advantageous embodiment, the airbag is made of a corrosion-resistant, high-temperature-resistant, and wear-resistant material.

[0015] According to an advantageous embodiment, the integrated tube has a mixing chamber, and the auxiliary tube is divided into a horizontal section, an inclined section and a frustum section from the inside to the outside. The horizontal section of the auxiliary tube is connected to the inner cavity of the fermenter and is opposite to the corresponding ring.

[0016] The inclined section and the frustum section of the auxiliary tube extend into the mixing chamber, with the frustum section being smaller at the top and larger at the bottom and having its axis pointing vertically.

[0017] According to an advantageous embodiment, the lower end of the frustum section of the auxiliary tube is provided with a plurality of equidistant discharge troughs, which are arranged from top to bottom as trapezoidal sections and rectangular sections with larger upper sections and smaller lower sections. The lower end of the frustum section is a guide section, which is an isosceles triangle with the apex facing downward.

[0018] According to an advantageous embodiment, a circular sealing plate is rotatably provided at the opening of the horizontal section of the auxiliary pipe. The edge of the sealing plate is made of rubber, and the rotation axis of the sealing plate is horizontal. After the ring moves down, the sealing plate becomes vertical. The two work together to seal the auxiliary pipe.

[0019] According to an advantageous embodiment, a semi-circular auxiliary plate is fixedly disposed within the horizontal section of the auxiliary tube, and a strong magnetic block is fixedly disposed on the upper end face of the auxiliary plate facing the sealing plate, and the upper side of the sealing plate near the auxiliary plate is made of metal.

[0020] According to an advantageous embodiment, the lower section of the integrated tube is connected to the inner cavity of the fermenter via a reflux pipe, which is located below all auxiliary tubes.

[0021] In summary, the present invention has the following beneficial effects: Firstly, by protecting the blades with airbags, the traditional shearing and mixing of materials in contact with the material is transformed into a low-shear or shear-free mixing method using flexible extrusion, avoiding damage to microorganisms during the mixing process. Secondly, by forming a brief cavity and mixing action, the invention assists the escape of heat-carrying microbubbles in the deep material, effectively transferring heat and assisting in the gas collection process. Furthermore, through the external circulation system of the integrated tube, the temperature is effectively controlled while collecting the gas escaping from the deep material. In conclusion, the invention improves the overall heat dissipation effect and gas collection efficiency while protecting microorganisms. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of an anaerobic fermentation and reuse device for composting livestock and poultry manure according to an embodiment of the present invention is shown.

[0024] Figure 2 This diagram shows a partial cross-sectional perspective view of an anaerobic fermentation and reuse device for composting livestock and poultry manure according to an embodiment of the present invention.

[0025] Figure 3 A three-dimensional structural diagram of the airbag, ring, and integrated tube provided according to an embodiment of the present invention is shown;

[0026] Figure 4 A partial cross-sectional exploded three-dimensional structural diagram of the airbag, blades, and integrated tube provided according to an embodiment of the present invention is shown.

[0027] Figure 5 A partial cross-sectional front view of the integrated tube and auxiliary tube provided according to an embodiment of the present invention is shown;

[0028] Figure 6 A partial cross-sectional view of the structure between the auxiliary pipe, the sealing plate, and the auxiliary plate provided according to an embodiment of the present invention is shown.

[0029] Figure 7 A side view schematic diagram of the auxiliary tube and sealing plate provided according to an embodiment of the present invention is shown;

[0030] Figure 8 A schematic diagram of the state of the sealing plate after tilting according to an embodiment of the present invention is shown.

[0031] The above-mentioned attached drawings include the following reference numerals: 1. Fermentation tank; 2. Gas outlet pipe; 3. Stirring unit; 30. Stirring shaft; 31. Fixing ring; 32. Blade; 4. Buffer unit; 40. Air bladder; 41. Air filling chamber; 42. Connecting column; 43. Communicating chamber; 5. Auxiliary unit; 50. Integrated pipe; 500. Mixing chamber; 51. Auxiliary pipe; 510. Discharge trough; 52. Sealing plate; 53. Auxiliary plate; 54. Strong magnetic block; 55. Return pipe; 6. Lifting cylinder; 60. Ring; 61. Rotating sleeve; 62. Gear ring; 63. Gear; 64. Fixing pile. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 and Figure 2 As shown, an anaerobic fermentation and reuse device for composting livestock and poultry manure includes: a fermentation tank 1, an exhaust pipe 2 on the upper side of the fermentation tank 1, a stirring unit 3 inside the fermentation tank 1, the stirring unit 3 including a stirring shaft 30, the stirring shaft 30 with a vertical axis is rotatably mounted on the fermentation tank 1, and a plurality of fixed rings 31 are fixedly mounted on the stirring shaft 30 located inside the fermentation tank 1, which are distributed vertically and vertically at equal intervals, and a plurality of circumferentially distributed blades 32 are fixedly mounted on the fixed rings 31.

[0034] A buffer unit 4 is provided on the stirring shaft 30. The buffer unit 4 includes an air bladder 40 covering the surface of the blade 32. An inflation chamber 41 is opened inside the stirring shaft 30. The inflation chamber 41 is connected to an external air pump (not shown in the figure) through a pipe. All air bladders 40 are connected to the inflation chamber 41. Before the blade 32 is stirred, the air bladder 40 inflates to cover the blade 32.

[0035] The fermenter 1 is provided with a plurality of auxiliary units 5 on the outside to assist the release of biogas during the stirring process. Each auxiliary unit 5 includes an integrated pipe 50. An integrated pipe 50 is fixedly installed on the outside of the fermenter 1. An auxiliary pipe 51 communicating with the inner cavity of the fermenter 1 is provided at the position opposite to the integrated pipe 50 and the fixing ring 31. The upper end of the integrated pipe 50 is connected to the gas outlet pipe 2 through a collection pipe.

[0036] The fermenter 1 is equipped with a drive assembly, which includes a lifting cylinder 6. The bottom of the fermenter 1 is equipped with a lifting cylinder 6 for driving the stirring shaft 30 to move up and down. All blades 32 on the same fixed ring 31 are fixedly equipped with a circular ring 60. The connection state of the auxiliary pipe 51 is controlled by the up and down movement of the circular ring 60.

[0037] During operation, after the material is added to fermentation tank 1, the fermentation tank 1 is sealed to form an anaerobic closed fermentation environment. The material begins to ferment and produces various gases. The gases flow out through the gas outlet pipe 2 and enter the subsequent collection stage. During the fermentation process, when stirring is required, the external air pump first pumps gas into the air bag 40 through the inflation chamber 41. This causes the air bag 40 to inflate and surround the blades 32, protecting the sharp edges of the blades 32 and increasing the effective volume of the stirring operation. This avoids the problem of physical damage to the microorganisms caused by the blades 32 directly contacting the internal microorganisms during stirring. Then, the stirring shaft 30 drives all the fixing rings 31, blades 32, and air bag 40 to rotate synchronously. The internal materials and microorganisms are stirred. In addition, during the stirring process, the lifting cylinder 6 moves the blades 32 upward, so that the integrated pipe 50 is connected to the fermentation tank 1. A large amount of gas removed from the fermentation tank 1 due to the upward movement and stirring process not only escapes upward, but also enters the integrated pipe 50 through the auxiliary pipe 51, and finally converges into the gas outlet pipe 2. This improves the gas collection efficiency of the materials at the bottom of the fermentation tank 1, thereby improving the overall gas collection effect and efficiency. In addition, the stirring and up-and-down movement accelerates the heat dissipation and gas escape during the fermentation process, avoiding the problem that the heat generated during fermentation is not easily dissipated, which causes the overall fermentation temperature to rise and affect the survival of microorganisms.

[0038] like Figure 2 and Figure 3As shown, a rotating sleeve 61 is rotatably mounted on the top of the fermentation tank 1. The rotating sleeve 61 is slidably connected to the stirring shaft 30. A toothed ring 62 is fixedly mounted on the rotating sleeve 61. A gear 63 that meshes with the toothed ring 62 is rotatably mounted on the upper side of the fermentation tank 1 via a drive shaft. The drive shaft is connected to an external motor (not shown in the figure).

[0039] The bottom of the fermentation tank 1 is fixedly provided with a fixed pile 64 that is larger at the top and smaller at the bottom. The stirring shaft 30 is movably disposed on the upper side of the fixed pile 64. The telescopic end of the lifting cylinder 6 passes through the fixed pile 64 from the bottom of the fermentation tank 1 and is connected to the lower end of the stirring shaft 30.

[0040] During operation, the external motor drives the drive shaft and its gear 63 to rotate synchronously. The meshing between the gear 63 and the gear ring 62 causes the gear ring 62 to drive the rotating sleeve 61 to rotate synchronously, thus causing the stirring shaft 30 to rotate synchronously. The stirring shaft 30 drives all the blades 32 on it to rotate a full circle, thereby performing the stirring operation. In addition, after a period of stirring, the lifting cylinder 6 operates, causing its extension section to drive the stirring shaft 30 and all the blades 32 to rise synchronously. At this time, through the connection between the rotating sleeve 61 and the drive shaft, the blades 32 can also perform the stirring operation. Through the above lifting process, the effective stirring area of ​​the blades 32 is increased. Therefore, the stirring operation of multiple sets of blades 32 can improve the stirring quality of materials and microorganisms in different areas, ensuring that the heat generated by fermentation can be quickly dissipated and that the biogas generated at the bottom of the fermentation tank 1 can escape upward and be collected. In summary, the stirring action and the rising stirring action improve the fermentation quality.

[0041] like Figure 3 and Figure 4 As shown, a plurality of connecting posts 42 are fixedly provided on the circumferential surface of the fixing ring 31, and the blades 32 are fixed to the corresponding connecting posts 42. The edges of the blades 32 are all chamfered.

[0042] The blade 32 and the corresponding connecting post 42 are both provided with a connecting cavity 43 that communicates with the inflation cavity 41. The opening of the connecting cavity 43 on the blade 32 is connected to the airbag 40 through a connecting pipe.

[0043] The airbag 40 is made of corrosion-resistant, high-temperature-resistant, and wear-resistant material, such as thermoplastic polyurethane and EPDM rubber, which are suitable for high-temperature, wear-resistant, and corrosion-resistant working environments during fermentation.

[0044] When stirring is required, an external air pump operates, pumping air into the inflation chamber 41 through a pipe, and finally into each air bladder 40 through the connecting chamber 43. As a result, each air bladder 40 inflates, completely covering and protecting the corresponding blade 32. Therefore, when microorganisms come into contact with the blade 32 during stirring, the contact method is gentler than the direct contact between the stirring blades in the prior art. This reduces the problem of damage to internal microorganisms caused by physical stirring, which affects the overall fermentation effect. In addition, the inflating of the air bladder 40 increases the effective stirring area that a single blade 32 can cover, thereby effectively squeezing the area where the material is located in the fermenter 1. The material position is effectively changed, which is conducive to heat dissipation and gas escape and collection.

[0045] like Figure 2 , Figure 5 and Figure 6 As shown, the integrated tube 50 has a mixing chamber 500 inside, and the auxiliary tube 51 is divided into a horizontal section, an inclined section and a frustum section from the inside to the outside. The horizontal section of the auxiliary tube 51 is connected to the inner cavity of the fermenter 1 and is opposite to the corresponding ring 60.

[0046] The inclined section and the frustum section of the auxiliary tube 51 extend into the mixing chamber 500, with the frustum section being smaller at the top and larger at the bottom and having its axis pointing vertically.

[0047] like Figure 6 and Figure 7 As shown, the lower end of the frustum section of the auxiliary pipe 51 is provided with multiple equidistant discharge troughs 510. The discharge troughs 510 are arranged from top to bottom as trapezoidal sections with larger upper sections and rectangular sections with smaller lower sections. The lower end of the frustum section is a guide section, which is an isosceles triangle with the apex facing down.

[0048] like Figure 6 and Figure 7 As shown, a circular sealing plate 52 is rotatably installed at the horizontal opening of the auxiliary pipe 51. The edge of the sealing plate 52 is made of rubber. The rotation axis of the sealing plate 52 is horizontal. After the ring 60 moves down, the sealing plate 52 becomes vertical. The two work together to seal the auxiliary pipe 51.

[0049] like Figure 3 and Figure 7 As shown, an auxiliary plate 53 is fixedly installed in the horizontal section of the auxiliary tube 51. A strong magnetic block 54 is fixedly installed on the upper surface of the auxiliary plate 53 facing the sealing plate 52. The upper side of the sealing plate 52 near the auxiliary plate 53 is made of metal.

[0050] The auxiliary plate 53 is semi-circular, and the area formed by the lower side of the auxiliary plate 53 and the inner wall of the auxiliary pipe 51 facilitates the entry of materials and gas.

[0051] During the stirring operation, the blades 32 drive the corresponding rings 60 to rotate synchronously. The rings 60 and the horizontal opening of the corresponding auxiliary pipe 51 are opposite each other and are sealed to prevent continuous material leakage during the initial stirring process from affecting the overall fermentation process. After continuous stirring, the stirring shaft 30 drives the blades 32 and the rings 60 to rise, so the horizontal opening of the auxiliary pipe 51 is exposed to the inner cavity of the fermenter 1. In addition, due to the rising action of the blades 32, a cavity is formed in the original area for a short period of time, which helps to release the heat-carrying bubbles that are deep in the material. Therefore, a large amount of material and generated gas gather in this area.

[0052] When the ring 60 completes its upward movement to the upper side of the corresponding auxiliary tube 51, the ring 60 contacts the sealing plate 52, thus allowing the sealing plate 52 to rotate. However, due to the magnetic attraction of the strong magnetic block 54 to the upper end of the sealing plate 52, the upper end of the sealing plate 52 initially tilts away from the stirring shaft 30. Although the internal material will impact the sealing plate 52, the prior magnetic attraction of the strong magnetic block 54 causes the sealing plate 52 to tilt from top to bottom towards the stirring shaft 30. (See reference...) Figure 8 Therefore, some of the material and gas gathered in the cavity described above flow into the auxiliary pipe 51 from the gap between the lower end of the sealing plate 52 and the inner wall of the auxiliary pipe 51. This part of the material and gas enters the mixing chamber 500 through the inclined section and the frustum section of the auxiliary pipe 51. The inclined section of the auxiliary pipe 51 facilitates the material carrying the gas downward. Regarding the operation process of the sealing plate 52 and the strong magnetic block 54, it should be further explained that the strong magnetic block 54 is only used to ensure that the sealing plate 52 has a tendency to deflect after unlocking, so as to complete the deflection action in accordance with the material influx process. This operation process is all to ensure that the sealing plate 52 can deflect. It is a known existing technology. Therefore, any existing technology with this action feature can be replaced. That is, replacing the electromagnetic block or replacing the one-way valve or the external valve controlled by the lifting cylinder can further achieve the above function. This flipping operation process is not an inventive point in this technical solution. It is only explained here and will not be elaborated on further.

[0053] As materials and gases flow from the frustum section of the auxiliary pipe 51 into the mixing chamber 500, the top-larger-bottom-smaller characteristic of the discharge trough 510 causes the materials to carry some gas downwards under their own gravity. In addition, multiple auxiliary pipes 51 in the same mixing chamber 500 use the above-mentioned feeding method, so the materials falling from different auxiliary pipes 51 in the mixing chamber 500 will not interfere with each other. At the same time, the removed gas gathers at the top of the mixing chamber 500 and eventually enters the gas outlet pipe 2 for collection. Furthermore, the guide section of the frustum section prevents gas from accumulating below the frustum section of the auxiliary pipe 51, guides the gas to gather upwards from the periphery of the frustum section, and, together with the inclined section of the auxiliary pipe 51, prevents the gas flowing into the mixing chamber 500 from flowing back into the fermenter 1.

[0054] During the above process, some materials will be removed from the fermentation tank 1. Therefore, after a period of time, the lifting cylinder 6 will work to move the stirring shaft 30 down to reset. As a result, the ring 60 moves down, and the lower end of the ring 60 first contacts the lower end of the sealing plate 52 and continues to squeeze the sealing plate 52, thus causing the sealing plate 52 to rotate and eventually make the sealing plate 52 vertical, that is, to restore the initial sealing state.

[0055] like Figure 2 and Figure 3 As shown, the lower section of the integrated pipe 50 is connected to the inner cavity of the fermenter 1 through the return pipe 55. The return pipe 55 is located below all the auxiliary pipes 51. A one-way valve and a pressure pump (common external prior art, not shown in the figure) are installed at the return pipe 55. The pressure pump applies pressure to cause the material in the integrated pipe 50 to intermittently flow back into the fermenter 1. It should be further explained that the pressure pump intermittently pressurizes the material in the integrated pipe 50, causing the material to intermittently flow back into the fermenter 1. This process can be achieved by setting a one-way storage chamber at the lower part of the integrated pipe 50 and using the pressure generated by the pressure pump to cause intermittent backflow. The above process is all for the purpose of separating the material and the gas. External prior art that achieves the above technical effect can be replaced after considering factors such as operating costs, and will not be elaborated further.

[0056] After the material and gas continuously enter the mixing chamber 500 through the auxiliary pipe 51, the material accumulates at the lower end of the mixing chamber 500 and the gas gathers at the upper end of the mixing chamber 500. The pressurizing pump works to discharge the material back into the fermenter 1 through the return pipe 55, while the gas flows into the gas outlet pipe 2 for collection. The above-mentioned return process avoids the problem of material loss causing resource waste and environmental pollution. At the same time, it can also play a part in heat dissipation during the material outflow and return process.

[0057] It should be further noted that while existing technologies use metal blades for stirring to aid heat dissipation and gas escape, thereby improving fermentation efficiency, the direct contact between the metal blades and the microorganisms used for fermentation can easily damage them during the stirring process, thus affecting the overall fermentation effect. Furthermore, stirring alone is insufficient to ensure proper gas dissipation and heat dissipation throughout the fermentation process, impacting the working environment for microbial fermentation. This technical solution incorporates a buffer unit 4, an auxiliary unit 5, and a drive assembly. Through the protective coverage of the airbag 40, the traditional material-contact shear stirring is transformed into a flexible, low-shear or shear-free stirring method, preventing damage during the stirring process. The shear force causes damage to microorganisms. In addition, the upward movement of the stirring shaft 30 creates a temporary cavity, which allows the blades 32 to disturb the material. At the same time, it helps the heat-carrying microbubbles in the deep material to escape, effectively transferring heat and assisting in the gas collection process. Through the external circulation process of the integrated pipe 50, the escaped gas is effectively collected, improving the collection efficiency and effectively carrying out heat dissipation. This intermittently reduces the workload in the fermenter 1, thereby greatly improving the overall heat dissipation effect and gas collection efficiency. Moreover, the added components are all existing conventional components, which can be used for a long time after a single installation. In summary, this technical solution is a specific improvement made entirely based on the defects of the existing technology and to solve the defects of the technology.

[0058] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An anaerobic fermentation and reuse device for composting livestock and poultry manure, characterized in that, include: A fermenter, wherein an air outlet pipe is provided on the upper side of the fermenter, and a stirring unit is provided inside the fermenter. The stirring unit includes a stirring shaft, and a stirring shaft with a vertical axis is rotatably provided on the fermenter. Multiple fixing rings are fixedly provided on the stirring shaft located inside the fermenter, and multiple circumferentially distributed blades are fixedly provided on the fixing rings. The stirring shaft is equipped with a buffer unit, which includes an air bladder covering the surface of the blades. An inflation chamber is opened inside the stirring shaft, and the air bladder is connected to the inflation chamber. Before the blades are stirred, the air bladder inflates to cover the blades. The fermenter is equipped with multiple auxiliary units on its outside to assist in the release of biogas during the stirring process. Each auxiliary unit includes an integrated pipe. An integrated pipe is fixedly installed on the outside of the fermenter. An auxiliary pipe communicating with the inner cavity of the fermenter is installed at the position opposite to the fixed ring of the integrated pipe. The upper end of the integrated pipe is connected to the gas outlet pipe through a collection pipe. The fermenter is equipped with a drive assembly, which includes a lifting cylinder. The bottom of the fermenter is equipped with a lifting cylinder for driving the stirring shaft to move up and down. All blades on the same fixed ring are fixed with a common ring, and the connection status of the auxiliary pipe is controlled by the up and down movement of the ring.

2. The anaerobic fermentation and reuse device for livestock and poultry manure composting according to claim 1, characterized in that: The top of the fermenter is rotatably equipped with a rotating sleeve, which is slidably connected to the stirring shaft. A toothed ring is fixedly fitted on the rotating sleeve, and a gear that meshes with the toothed ring is rotatably mounted on the upper side of the fermenter via a drive shaft. The bottom of the fermenter is fixedly equipped with a fixed pile that is larger at the top and smaller at the bottom. The stirring shaft is movably mounted on the upper side of the fixed pile. The telescopic end of the lifting cylinder passes through the fixed pile from the bottom of the fermenter and is connected to the lower end of the stirring shaft.

3. The anaerobic fermentation recycling device for livestock and poultry manure composting processing according to claim 1, characterized in that: The circumferential surface of the fixed ring is fixedly provided with multiple connecting posts, and the blades are fixed to the corresponding connecting posts. The edges of the blades are all chamfered. The blade and the corresponding connecting post have a common connecting cavity that communicates with the inflation chamber. The opening of the connecting cavity on the blade is connected to the airbag through a connecting pipe.

4. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 3, characterized in that: The airbag is made of a corrosion-resistant, high-temperature-resistant, and wear-resistant material.

5. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 1, characterized in that: The integrated tube has a mixing chamber inside, and the auxiliary tube is divided into a horizontal section, an inclined section and a frustum section from the inside to the outside. The horizontal section of the auxiliary tube is connected to the inner cavity of the fermenter and is opposite to the corresponding ring. The inclined section and the frustum section of the auxiliary tube extend into the mixing chamber, with the frustum section being smaller at the top and larger at the bottom and having its axis pointing vertically.

6. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 5, characterized in that: The lower end of the frustum section of the auxiliary tube is provided with multiple equidistant discharge troughs. The discharge troughs are arranged from top to bottom as trapezoidal sections (larger at the top and smaller at the bottom) and rectangular sections. The lower end of the frustum section is a guide section, which is an isosceles triangle with the apex pointing downwards.

7. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 5, characterized in that: A circular sealing plate is rotatably installed at the horizontal opening of the auxiliary pipe. The edge of the sealing plate is made of rubber. The rotation axis of the sealing plate is horizontal. After the ring moves down, the sealing plate becomes vertical. The two work together to seal the auxiliary pipe.

8. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 5, characterized in that: A semi-circular auxiliary plate is fixedly installed in the horizontal section of the auxiliary pipe. A strong magnetic block is fixedly installed on the upper surface of the auxiliary plate facing the sealing plate. The upper side of the sealing plate near the auxiliary plate is made of metal.

9. The anaerobic fermentation recycling device for livestock manure composting processing according to claim 5, characterized in that: The lower section of the integrated tube is connected to the inner cavity of the fermenter through a reflux pipe, which is located below all the auxiliary tubes.

Images