Buried livestock and poultry manure flow pressure circulation fermentation device

Abstract

The invention relates to the technical field of biological fertilizer fermentation devices, in particular to a buried livestock and poultry manure flow pressure circulation fermentation device. According to the technical scheme, the device comprises a buried fermentation tank, a box body, a buried pipe, a motor and a pump shell, a feeding pipe is arranged at the upper end of the buried fermentation tank, the box body is arranged at one end of the buried fermentation tank, the motor and the pump shell are arranged in the box body, a rotating shaft is arranged at the output end of the motor, and a stirring rod is arranged on the outer wall of the rotating shaft; a pump shaft is rotationally installed in the pump shell, the outer wall of the pump shaft is sleeved with an impeller, a suction pipe is arranged at the suction end of the pump shell, a heat exchange pipe is arranged at one end of the suction pipe, a buried pipe is arranged at one end of the heat exchange pipe, and a backflow pipe is arranged at the output end of the pump shell. According to the buried pipe, underground heat is introduced to heat the interior of the buried fermentation tank, the problem of insufficient fermentation heat of livestock and poultry manure is solved under the condition that extra energy consumption is not needed, the use cost is reduced, and environmental protection is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of bio-fertilizer fermentation devices, and in particular to an underground livestock and poultry manure flow pressure circulation fermentation device. Background Art

[0002] Livestock and poultry manure refers to the excrement of livestock (such as cattle, pigs, sheep) and poultry (such as chickens, ducks, geese) and other animals. Livestock and poultry manure is rich in organic waste and nutrients (such as nitrogen, phosphorus, potassium, etc.). If it is not properly treated, it may cause pollution to the environment. Fermentation is a process of degrading organic matter through the action of microorganisms. Livestock and poultry manure can be recycled and utilized by fermenting it.

[0003] Among them, livestock and poultry manure can be recycled into organic fertilizer, and the nutrients are more easily absorbed and utilized by crops. The odor emission of livestock and poultry manure can be greatly reduced through fermentation. The high temperature generated during the fermentation process helps to eliminate some pests and pathogens, but the fermentation process needs to maintain a certain fermentation temperature. When the temperature cannot be met during underground fermentation, a heating device is required to heat the livestock and poultry manure inside the fermentation tank to help the fermentation of livestock and poultry manure, but it will generate additional electricity consumption, increasing the cost of use. Therefore, those skilled in the art provide an underground livestock and poultry manure flow pressure circulation fermentation device to solve the problems raised in the above-mentioned background technology. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology and to provide an underground livestock and poultry manure flow pressure circulation fermentation device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an underground livestock and poultry manure flow pressure circulation fermentation device, comprising an underground fermentation tank, a box body, an underground pipe, a motor and a pump casing, wherein a feed pipe is arranged at the upper end of the underground fermentation tank, a box body is arranged at one end of the underground fermentation tank, a motor and a pump casing are arranged inside the box body, a rotating shaft rotatably installed inside the underground fermentation tank is arranged at the output end of the motor, a plurality of stirring rods distributed in a circular array are arranged on the outer wall of the rotating shaft, a pump shaft is rotatably installed inside the pump casing, an impeller rotatably installed inside the pump casing is sleeved on the outer wall of the pump shaft, a suction pipe is arranged at the suction end of the pump casing, a heat exchange pipe is arranged at one end of the suction pipe and is spirally distributed on the inner side of the underground fermentation tank, a buried pipe that penetrates the underground fermentation tank and is buried deep underground is arranged at one end of the heat exchange pipe, and a reflux pipe that penetrates the underground fermentation tank is arranged at the output end of the pump casing.

[0006] Preferably, a temperature sensor and a humidity sensor are provided inside the underground fermentation tank to detect the temperature and humidity inside the underground fermentation tank.

[0007] Preferably, a filter element is provided at the opening of the underground pipe on the ground surface, a support net is provided at the opening of the feed pipe, and a control valve is provided inside the underground fermentation tank. When the underground pipe draws gas, solid particles in the gas are filtered by the filter element to prevent solid particles from accumulating inside the underground pipe, and the feed of the feed pipe is separated and processed by the support net. At the same time, large-sized foreign objects are intercepted, and the control valve controls the opening and closing of the feed pipe.

[0008] Preferably, a bearing bracket is provided inside the housing, and one end of the pump shaft is rotatably mounted inside the bearing bracket. One end of the pump shaft is rotatably supported by the bearing bracket, thereby improving the stability of the pump shaft during rotation.

[0009] Preferably, a liquid collecting chamber is provided inside the underground fermentation tank, a liquid extraction pipe located inside the liquid collecting chamber is installed through the underground fermentation tank, and a thermal insulation layer is sleeved on the outer wall of the underground fermentation tank. The liquid collecting chamber stores the accumulated liquid inside the underground fermentation tank, and the accumulated liquid inside the liquid collecting chamber is sucked out by the liquid extraction pipe, and the thermal insulation layer plays a role in keeping the underground fermentation tank warm.

[0010] Preferably, a manure extraction pipe is provided inside the lower end of the underground fermentation tank, an exhaust pipe is provided at one end of the return pipe located on the surface, and a three-way valve is provided at the connection between the exhaust pipe and the return pipe. The manure extraction pipe extracts the livestock and poultry manure fermented inside the underground fermentation tank, and the pumped gas is output through the exhaust pipe, and the opening and closing of the exhaust pipe and the return pipe are controlled by the three-way valve.

[0011] Preferably, the underground fermentation tank is provided with a filter screen located inside the liquid collection chamber, and a grid plate is provided at one end of the filter screen. The filter screen intercepts solid matter in the underground fermentation tank to prevent the solid matter from entering the liquid collection chamber, and the grid plate improves the support strength of the filter screen for the solid matter.

[0012] Preferably, a rotating disk is provided at one end of the rotating shaft, and brush strips corresponding to the filter screen and distributed in a circular array are provided at one end of the rotating disk. The rotating shaft drives the rotating shaft to rotate, and the brush strips rotate with the rotating disk, driving the brush strips to scrape the outer wall of the filter screen to prevent the filter screen from being blocked.

[0013] Preferably, the outer wall of the rotating shaft is sleeved with a driving wheel, the outer wall of the pump shaft is sleeved with a driven wheel with a radius smaller than the driving wheel, and the outer walls of the driving wheel and the driven wheel are sleeved with belts. The driving wheel and the driven wheel are connected through the belt to realize the transmission of the rotating shaft and the pump shaft.

[0014] Preferably, the method for using the underground livestock and poultry manure pressure circulation fermentation device is as follows:

[0015] S1: The feed pipe is the feed channel of the underground fermentation tank, and is also the air intake channel of the underground fermentation tank. It is used to store livestock and poultry manure and introduce necessary air into the underground fermentation tank to make up for the lack of oxygen. The opening of the feed pipe is controlled by a control valve. In the process of livestock and poultry manure being input through the feed pipe, a holding device needs to be used in conjunction with the support net to divide the underground fermentation tank into several small pieces, thereby avoiding the situation that the overall angle of livestock and poultry manure is not convenient for full fermentation, and at the same time avoiding the entry of solid objects and stones into the interior, intercepting large-sized foreign objects, ensuring the stability of the suction of livestock and poultry manure after fermentation in the underground fermentation tank, avoiding the situation that the suction pipe is blocked by foreign objects, and making the underground fermentation tank stable during the feeding and discharging process;

[0016] S2: During the fermentation process, the temperature and humidity of the inner wall of the underground fermentation tank are monitored by the temperature sensor and the humidity sensor. When the humidity is high, the liquid in the liquid collecting chamber inside the underground fermentation tank is sucked through the liquid suction pipe to reduce the humidity of the inner wall of the underground fermentation tank. When the humidity is low, water is added through the feed pipe to increase the humidity inside the underground fermentation tank. At the same time, the motor drives the rotating shaft to rotate, driving the stirring rod to stir the livestock and poultry manure inside the underground fermentation tank to assist the fermentation of the livestock and poultry manure inside the underground fermentation tank. At the same time, the fermentation agent added to the underground fermentation tank to assist the fermentation is fully mixed, and at the same time, the livestock and poultry manure inside the underground fermentation tank is assisted to be heated;

[0017] S3: During the fermentation process of livestock and poultry manure, the rotation of the shaft drives the driving wheel to rotate, and the driven wheel rotates through the belt linkage, driving the impeller to rotate inside the pump casing, thereby generating suction force, sucking the external air flow through the buried pipe and absorbing the heat deep underground, and heating the inside of the buried fermentation tank through the heat exchange pipe to make up for the lack of heat inside the buried fermentation tank that affects the fermentation of livestock and poultry manure.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The livestock and poultry manure of the present invention is stored in an underground fermentation tank, and the livestock and poultry manure is fermented by the fermentation tank. During the fermentation process, the stirring rod rotates through the rotating shaft to stir and mix the livestock and poultry manure, thereby helping to ferment evenly. At the same time, the underground pipe is buried deeper underground, and through the heat exchange between the underground pipe and the underground heat, the external gas is sucked through the underground pipe, and becomes hot after exchanging with the underground heat, and the temperature is increased in the process. The heated gas is then transported to the underground fermentation tank or heat-exchanged with the fermented livestock and poultry manure through the heat exchange pipe, thereby raising the temperature inside the underground fermentation tank. The power source for the air extraction is the motor of the stirring assembly, which avoids the use of additional power equipment, makes full use of the geothermal resources deep underground, reduces the power consumption in the heating process, reduces the negative impact on the environment, saves energy and reduces emissions, and reduces operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the main cross-sectional three-dimensional structure of the underground fermentation tank of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the pump casing of the present invention from a side view;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the underground fermentation tank of the present invention when viewed from the first angle;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the interior of the underground fermentation tank of the present invention when viewed from a second angle;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the pump casing of the present invention in a side cross-sectional view;

[0026] Figure 7 It is a schematic diagram of the main cross-sectional three-dimensional structure of the filter screen of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the turntable of the present invention from a side view.

[0028] Figure numerals: 1. underground fermentation tank; 2. box body; 3. insulation layer; 4. feed pipe; 5. fecal suction pipe; 6. liquid suction pipe; 7. suction pipe; 8. buried pipe; 9. return pipe; 10. three-way valve; 11. exhaust pipe; 12. motor; 13. pump casing; 14. rotating shaft; 15. stirring rod; 16. heat exchange tube; 17. turntable; 18. driving wheel; 19. driven wheel; 20. belt; 21. bearing bracket; 22. pump shaft; 23. impeller; 24. filter screen; 25. grid plate; 26. brush bar; 27. liquid collecting chamber. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 8 , the present invention provides four embodiments:

[0031] An underground livestock and poultry manure flow pressure circulation fermentation device comprises an underground fermentation tank 1, a box body 2, an underground pipe 8, a motor 12 and a pump casing 13. A feed pipe 4 is arranged at the upper end of the underground fermentation tank 1, a box body 2 is arranged at one end of the underground fermentation tank 1, a motor 12 and a pump casing 13 are arranged inside the box body 2, a rotating shaft 14 rotatably installed inside the underground fermentation tank 1 is arranged at the output end of the motor 12, and a plurality of stirring rods 15 distributed in a circular array are arranged on the outer wall of the rotating shaft 14;

[0032] A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank 1;

[0033] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1, and an insulation layer 3 is sleeved on the outer wall of the underground fermentation tank 1;

[0034] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1;

[0035] The feces excreted by animals such as cattle, pigs, sheep, chickens, ducks, and geese are input through the feed pipe 4. During the fermentation process, the interior of the underground fermentation tank 1 is pressurized. At a certain pressure, the motor 12 drives the rotating shaft 14 to rotate, driving the stirring rod 15 to stir the livestock and poultry manure. The mixing and transfer process is carried out under a certain pressure to improve the fermentation efficiency. The environment inside the underground fermentation tank 1 can be ventilated through the feed pipe 4, and the temperature and humidity in the tank can be adjusted as needed. The fermented livestock and poultry manure becomes organic fertilizer. The odor emission of livestock and poultry manure can be greatly reduced through fermentation. The high temperature generated during the fermentation process helps to eliminate some pests and pathogens, thereby realizing the molding and use of organic fertilizers. A fermentation agent, such as a solid fermentation agent or a decomposed substance, can be added during the fermentation process to help start the fermentation process.

[0036] Embodiment 2:

[0037] The invention comprises an underground fermentation tank 1, a box body 2, an underground pipe 8, a motor 12 and a pump casing 13. A feed pipe 4 is arranged at the upper end of the underground fermentation tank 1, a box body 2 is arranged at one end of the underground fermentation tank 1, a motor 12 and a pump casing 13 are arranged inside the box body 2, a rotating shaft 14 rotatably installed inside the underground fermentation tank 1 is arranged at the output end of the motor 12, and a plurality of stirring rods 15 distributed in a circular array are arranged on the outer wall of the rotating shaft 14;

[0038] A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank 1;

[0039] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1, and an insulation layer 3 is sleeved on the outer wall of the underground fermentation tank 1;

[0040] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1;

[0041] The feces excreted by animals such as cattle, pigs, sheep, chickens, ducks, and geese are input through the feed pipe 4. During the fermentation process, the interior of the underground fermentation tank 1 is pressurized. At a certain pressure, the motor 12 drives the rotating shaft 14 to rotate, driving the stirring rod 15 to stir the livestock and poultry manure. The mixing and transfer process is carried out under a certain pressure to improve the fermentation efficiency. The environment inside the underground fermentation tank 1 can be ventilated through the feed pipe 4, and the temperature and humidity in the tank can be adjusted as needed. The fermented livestock and poultry manure becomes organic fertilizer. The odor emission of livestock and poultry manure can be greatly reduced through fermentation. The high temperature generated during the fermentation process helps to eliminate some pests and pathogens, thereby realizing the molding and use of organic fertilizers. A fermentation agent, such as a solid fermentation agent or a decomposed substance, can be added during the fermentation process to help start the fermentation process.

[0042] A pump shaft 22 is rotatably installed inside the pump casing 13, and an impeller 23 rotatably installed inside the pump casing 13 is sleeved on the outer wall of the pump shaft 22. A suction pipe 7 is provided at the suction end of the pump casing 13, and a heat exchange pipe 16 spirally distributed on the inner side of the buried fermentation tank 1 is provided at one end of the suction pipe 7. An underground pipe 8 that penetrates the buried fermentation tank 1 and is buried deep underground is provided at one end of the heat exchange pipe 16. A reflux pipe 9 that penetrates the buried fermentation tank 1 is provided at the output end of the pump casing 13.

[0043] A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank 1;

[0044] A filter element is provided at the opening of the buried pipe 8 on the ground surface, a support net is provided at the opening of the feed pipe 4, and a control valve is provided inside the buried fermentation tank 1;

[0045] A bearing bracket 21 is provided inside the housing 2, and one end of the pump shaft 22 is rotatably mounted inside the bearing bracket 21;

[0046] An exhaust pipe 11 is provided at one end of the return pipe 9 located on the ground, and a three-way valve 10 is provided at the connection between the exhaust pipe 11 and the return pipe 9;

[0047] The outer wall of the rotating shaft 14 is sleeved with a driving wheel 18, the outer wall of the pump shaft 22 is sleeved with a driven wheel 19 whose radius is smaller than that of the driving wheel 18, and the outer walls of the driving wheel 18 and the driven wheel 19 are both sleeved with a belt 20;

[0048] During the fermentation process, when the temperature sensor detects that the temperature inside the underground fermentation tank 1 is low, the rotating shaft 14 drives the driving wheel 18 to rotate, and through the linkage of the belt 20, drives the driven wheel 19 to rotate, drives the pump shaft 22 to rotate, and the pump shaft 22 drives the impeller 23 to rotate. During the rotation of the pump shaft 22, the impeller 23 is driven to rotate, and a suction force is generated inside the pump casing 13, and the external gas is sucked through the buried pipe 8. It is worth mentioning that the opening and closing of the buried pipe 8 is controlled by a valve. When it is necessary to suck gas for heat exchange, the buried pipe 8 is closed by controlling the valve, and opened when necessary, and the external gas enters deep underground. During the flow, it absorbs the heat in the underground soil, and transfers the heat to the livestock and poultry manure inside the buried heat exchange pipe 16 through the heat exchange pipe 16, so as to heat the livestock and poultry manure. During the heating process, the use of additional electric heating equipment is avoided;

[0049] When using external thermal electric heating equipment, additional electricity costs will be added and may result in energy waste. It will not be possible to fully utilize renewable resources or heat in the natural environment. Relying on electric heating will increase carbon emissions, which is not conducive to environmental protection. Heat exchange is carried out through the buried pipe 8 and the suction of external gas to achieve the necessary heating in the fermentation process, reducing energy consumption and additional electricity costs. The buried pipe 8 exchanges heat with underground heat to heat the cold air into warm air flow and send it into the fermentation tank. Through the above optimization and improvement, the buried pipe 8 heat exchange system utilizes the natural heat in the environment for heating, thereby improving the energy efficiency of the fermentation process, reducing operating costs, and having better environmental benefits. At the same time, when pressurization is required, Hu Liuguan opens the three-way valve 10 to introduce the preheated air flow after heat exchange into the buried fermentation tank 1, and pressurizes the inside of the buried fermentation tank 1. When pressurization is not required, the three-way valve 10 controls the exhaust pipe 11 to open, and the gas is directly discharged to the outside.

[0050] Embodiment three:

[0051] The invention comprises an underground fermentation tank 1, a box body 2, an underground pipe 8, a motor 12 and a pump casing 13. A feed pipe 4 is arranged at the upper end of the underground fermentation tank 1, a box body 2 is arranged at one end of the underground fermentation tank 1, a motor 12 and a pump casing 13 are arranged inside the box body 2, a rotating shaft 14 rotatably installed inside the underground fermentation tank 1 is arranged at the output end of the motor 12, and a plurality of stirring rods 15 distributed in a circular array are arranged on the outer wall of the rotating shaft 14;

[0052] A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank 1;

[0053] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1, and an insulation layer 3 is sleeved on the outer wall of the underground fermentation tank 1;

[0054] A manure extraction pipe 5 is provided inside the lower end of the underground fermentation tank 1;

[0055] The feces excreted by animals such as cattle, pigs, sheep, chickens, ducks, and geese are input through the feed pipe 4. During the fermentation process, the interior of the underground fermentation tank 1 is pressurized. At a certain pressure, the motor 12 drives the rotating shaft 14 to rotate, driving the stirring rod 15 to stir the livestock and poultry manure. The mixing and transfer process is carried out under a certain pressure to improve the fermentation efficiency. The environment inside the underground fermentation tank 1 can be ventilated through the feed pipe 4, and the temperature and humidity in the tank can be adjusted as needed. The fermented livestock and poultry manure becomes organic fertilizer. The odor emission of livestock and poultry manure can be greatly reduced through fermentation. The high temperature generated during the fermentation process helps to eliminate some pests and pathogens, thereby realizing the molding and use of organic fertilizers. A fermentation agent, such as a solid fermentation agent or a decomposed substance, can be added during the fermentation process to help start the fermentation process.

[0056] A pump shaft 22 is rotatably installed inside the pump casing 13, and an impeller 23 rotatably installed inside the pump casing 13 is sleeved on the outer wall of the pump shaft 22. A suction pipe 7 is provided at the suction end of the pump casing 13, and a heat exchange pipe 16 spirally distributed on the inner side of the buried fermentation tank 1 is provided at one end of the suction pipe 7. An underground pipe 8 that penetrates the buried fermentation tank 1 and is buried deep underground is provided at one end of the heat exchange pipe 16. A reflux pipe 9 that penetrates the buried fermentation tank 1 is provided at the output end of the pump casing 13.

[0057] A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank 1;

[0058] A filter element is provided at the opening of the buried pipe 8 on the ground surface, a support net is provided at the opening of the feed pipe 4, and a control valve is provided inside the buried fermentation tank 1;

[0059] A bearing bracket 21 is provided inside the housing 2, and one end of the pump shaft 22 is rotatably mounted inside the bearing bracket 21;

[0060] An exhaust pipe 11 is provided at one end of the return pipe 9 located on the ground, and a three-way valve 10 is provided at the connection between the exhaust pipe 11 and the return pipe 9;

[0061] The outer wall of the rotating shaft 14 is sleeved with a driving wheel 18, the outer wall of the pump shaft 22 is sleeved with a driven wheel 19 whose radius is smaller than that of the driving wheel 18, and the outer walls of the driving wheel 18 and the driven wheel 19 are both sleeved with a belt 20;

[0062] During the fermentation process, when the temperature sensor detects that the temperature inside the underground fermentation tank 1 is low, the rotating shaft 14 drives the driving wheel 18 to rotate, and through the linkage of the belt 20, drives the driven wheel 19 to rotate, drives the pump shaft 22 to rotate, and the pump shaft 22 drives the impeller 23 to rotate. During the rotation of the pump shaft 22, the impeller 23 is driven to rotate, and a suction force is generated inside the pump casing 13, and the external gas is sucked through the buried pipe 8. It is worth mentioning that the opening and closing of the buried pipe 8 is controlled by a valve. When it is necessary to suck gas for heat exchange, the buried pipe 8 is closed by controlling the valve, and opened when necessary, and the external gas enters deep underground. During the flow, it absorbs the heat in the underground soil, and transfers the heat to the livestock and poultry manure inside the buried heat exchange pipe 16 through the heat exchange pipe 16, so as to heat the livestock and poultry manure. During the heating process, the use of additional electric heating equipment is avoided;

[0063] When using external thermal electric heating equipment, additional electricity costs will be added and may result in energy waste. It will not be possible to fully utilize renewable resources or heat in the natural environment. Relying on electric heating will increase carbon emissions, which is not conducive to environmental protection. Heat exchange is carried out through the buried pipe 8 and the suction of external gas to achieve the necessary heating in the fermentation process, reducing energy consumption and additional electricity costs. The buried pipe 8 exchanges heat with underground heat to heat the cold air into warm air flow and send it into the fermentation tank. Through the above optimization and improvement, the buried pipe 8 heat exchange system utilizes the natural heat in the environment for heating, thereby improving the energy efficiency of the fermentation process, reducing operating costs, and having better environmental benefits. At the same time, when pressurization is required, Hu Liuguan opens the three-way valve 10 to introduce the preheated air flow after heat exchange into the buried fermentation tank 1, and pressurizes the inside of the buried fermentation tank 1. When pressurization is not required, the three-way valve 10 controls the exhaust pipe 11 to open, and the gas is directly discharged to the outside

[0064] A liquid collecting chamber 27 is provided inside the underground fermentation tank 1, and a liquid extraction pipe 6 located inside the liquid collecting chamber 27 is installed through the underground fermentation tank 1;

[0065] A rotating disc 17 is disposed at one end of the rotating shaft 14, and brush strips 26 corresponding to the filter screen 24 and distributed in a circular array are disposed at one end of the rotating disc 17;

[0066] The underground fermentation tank 1 is provided with a filter screen 24 located inside the liquid collecting chamber 27, and a grid plate 25 is provided at one end of the filter screen 24;

[0067] During the fermentation of livestock and poultry manure by the buried fermentation tank 1, too much liquid inside is not conducive to the fermentation of livestock and poultry manure. The liquid inside the liquid collection chamber is regularly sucked out by the liquid extraction pipe 6. At the same time, when the rotating shaft 14 rotates, the turntable 17 is driven to rotate, and then the brush bar 26 is driven to scrape the filter 24 to avoid clogging of the filter 24 and ensure that the accumulated liquid effectively enters the liquid collection chamber 27. The cleaning of the filter 24 avoids the use of additional power equipment. The driving source motor 12 of the stirring structure is also used as the power to reduce energy consumption, which is in line with the concept of environmental protection.

[0068] Embodiment 4:

[0069] The method and steps of using the underground livestock and poultry manure flow pressure circulation fermentation device are as follows:

[0070] S1: The feed pipe 4 is the feed channel of the underground fermentation tank 1, and is also the air intake channel of the underground fermentation tank 1. It is used to store livestock and poultry manure and introduce necessary air into the underground fermentation tank 1 to make up for the lack of oxygen. The opening of the feed pipe 4 is controlled by a control valve. In the process of livestock and poultry manure being input through the feed pipe 4, a holding device needs to be used in conjunction with the underground fermentation tank 1 to divide the underground fermentation tank 1 into several small pieces through a support net, thereby avoiding the situation that the overall angle of livestock and poultry manure is not convenient for full fermentation, and at the same time avoiding the entry of solid objects and stones mixed into the interior, intercepting large-sized foreign objects, ensuring the stability of the suction of livestock and poultry manure after fermentation in the underground fermentation tank 1, and avoiding the situation that the suction pipe 7 is blocked by foreign objects, so that the underground fermentation tank 1 is stable during the feeding and discharging process;

[0071] S2: During the fermentation process, the temperature and humidity of the inner wall of the underground fermentation tank 1 are monitored by the temperature sensor and the humidity sensor. When the humidity is high, the liquid in the liquid collecting chamber 27 inside the underground fermentation tank 1 is sucked through the liquid suction pipe 6 to reduce the humidity of the inner wall of the underground fermentation tank 1. When the humidity is low, water is added through the feed pipe 4 to increase the humidity inside the underground fermentation tank 1. At the same time, the motor 12 drives the rotating shaft 14 to rotate, driving the stirring rod 15 to stir the livestock and poultry manure inside the underground fermentation tank 1 to assist the fermentation of the livestock and poultry manure inside the underground fermentation tank 1. At the same time, the fermentation agent added to the underground fermentation tank 1 to assist the fermentation is fully mixed, and at the same time, the livestock and poultry manure inside the underground fermentation tank 1 is assisted to be heated;

[0072] S3: During the fermentation of livestock and poultry manure, the rotating shaft 14 rotates to drive the driving wheel 18 to rotate, and the driven wheel 19 rotates through the belt 20, driving the impeller 23 to rotate inside the pump casing 13, thereby generating a suction force, sucking the external air flow through the buried pipe 8 and absorbing the heat deep underground, and heating the inside of the buried fermentation tank 1 through the heat exchange pipe 16 to make up for the situation that the insufficient heat inside the buried fermentation tank 1 affects the fermentation of livestock and poultry manure.

[0073] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0074] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An underground livestock and poultry manure pressure circulation fermentation device, comprising an underground fermentation tank (1), a box body (2), an underground pipe (8), a motor (12) and a pump casing (13), characterized in that: The upper end of the underground fermentation tank (1) is provided with a feed pipe (4); one end of the underground fermentation tank (1) is provided with a box body (2); a motor (12) and a pump housing (13) are provided inside the box body (2); an output end of the motor (12) is provided with a rotating shaft (14) rotatably mounted inside the underground fermentation tank (1); the outer wall of the rotating shaft (14) is provided with a plurality of stirring rods (15) distributed in a circular array; a pump shaft (22) is rotatably mounted inside the pump housing (13); An impeller (23) rotatably mounted inside a pump casing (13) is sleeved on the outer wall of the pump shaft (22); a suction pipe (7) is provided at the suction end of the pump casing (13); a heat exchange pipe (16) is provided at one end of the suction pipe (7) and is spirally distributed on the inner side of the buried fermentation tank (1); a buried pipe (8) is provided at one end of the heat exchange pipe (16) and passes through the buried fermentation tank (1) and is buried deep underground; and a return pipe (9) is provided at the output end of the pump casing (13) and passes through the buried fermentation tank (1).

2. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: A temperature sensor and a humidity sensor are arranged inside the underground fermentation tank (1).

3. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: A filter element is provided at the opening of the buried pipe (8) located on the ground surface, a support net is provided at the opening of the feed pipe (4), and a control valve is provided inside the buried fermentation tank (1).

4. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: A bearing bracket (21) is arranged inside the housing (2), and one end of the pump shaft (22) is rotatably mounted inside the bearing bracket (21).

5. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: The underground fermentation tank (1) is provided with a liquid collecting chamber (27) inside, the underground fermentation tank (1) is penetrated by a liquid extraction pipe (6) located inside the liquid collecting chamber (27), and the outer wall of the underground fermentation tank (1) is sleeved with a heat-insulating layer (3).

6. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: A manure extraction pipe (5) is provided inside the lower end of the underground fermentation tank (1), an exhaust pipe (11) is provided at one end of the return pipe (9) located on the ground surface, and a three-way valve (10) is provided at the connection between the exhaust pipe (11) and the return pipe (9).

7. The underground livestock and poultry manure pressure circulation fermentation device according to claim 5, characterized in that: The underground fermentation tank (1) is provided with a filter screen (24) located inside the liquid collecting chamber (27), and a grid plate (25) is provided at one end of the filter screen (24).

8. The underground livestock and poultry manure pressure circulation fermentation device according to claim 7, characterized in that: A rotating disk (17) is disposed at one end of the rotating shaft (14), and brush strips (26) corresponding to the filter screen (24) and distributed in a ring array are disposed at one end of the rotating disk (17).

9. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: The outer wall of the rotating shaft (14) is sleeved with a driving wheel (18), the outer wall of the pump shaft (22) is sleeved with a driven wheel (19) having a radius smaller than that of the driving wheel (18), and the outer walls of the driving wheel (18) and the driven wheel (19) are both sleeved with belts (20).

10. The underground livestock and poultry manure pressure circulation fermentation device according to claim 1, characterized in that: The method and steps of using the underground livestock and poultry manure flow pressure circulation fermentation device are as follows: S1: The feed pipe (4) is the feed channel of the underground fermentation tank (1), and is also the air intake channel of the underground fermentation tank (1). It is used to store livestock and poultry manure and introduce necessary air into the underground fermentation tank (1) to compensate for the lack of oxygen. The opening of the feed pipe (4) is controlled by a control valve. In the process of inputting livestock and poultry manure through the feed pipe (4), a holding device needs to be used in conjunction with the underground fermentation tank (1) to divide the underground fermentation tank (1) into several small pieces through a support net, thereby avoiding the situation that the overall angle of the livestock and poultry manure is not convenient for full fermentation, and at the same time avoiding the entry of solid objects and stones into the interior, intercepting large-sized foreign objects, ensuring the stability of the suction of livestock and poultry manure after fermentation in the underground fermentation tank (1), and avoiding the situation that the suction pipe (7) is blocked by foreign objects, so that the underground fermentation tank (1) is stable during the material input and output process; S2: During the fermentation process, the temperature and humidity of the inner wall of the underground fermentation tank (1) are monitored by a temperature sensor and a humidity sensor. When the humidity is high, the liquid in the liquid collecting chamber (27) inside the underground fermentation tank (1) is sucked through the liquid suction pipe (6) to reduce the humidity of the inner wall of the underground fermentation tank (1). When the humidity is low, water is added through the feed pipe (4) to increase the humidity inside the underground fermentation tank (1). At the same time, the motor (12) drives the rotating shaft (14) to rotate, driving the stirring rod (15) to stir the livestock and poultry manure inside the underground fermentation tank (1), thereby assisting the fermentation of the livestock and poultry manure inside the underground fermentation tank (1). At the same time, the fermentation agent added to the underground fermentation tank (1) to assist the fermentation is fully mixed, thereby assisting the heating of the livestock and poultry manure inside the underground fermentation tank (1); S3: During the fermentation of livestock and poultry manure, the rotating shaft (14) rotates to drive the driving wheel (18) to rotate, and the driven wheel (19) is linked to rotate through the belt (20), driving the impeller (23) to rotate inside the pump housing (13), thereby generating a suction force, sucking the external air flow through the buried pipe (8) and absorbing the heat deep underground, and heating the inside of the buried fermentation tank (1) through the heat exchange pipe (16), thereby compensating for the situation that the insufficient heat inside the buried fermentation tank (1) affects the fermentation of livestock and poultry manure.

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