A livestock and poultry manure drying and treatment facility

Abstract

This invention relates to the technical field of poultry manure treatment equipment, and discloses a livestock and poultry manure drying and treatment mechanism, including a preheating furnace and a drying furnace. Both the preheating furnace and the drying furnace have stirring components installed in their inner cavities. The preheating furnace has a jacket on its outer wall. The inner cavity of the drying furnace communicates with the jacket, and a cyclone dust collector is installed between the inner cavity of the drying furnace and the jacket. One end of the cyclone dust collector's air inlet communicates with the inner cavity of the drying furnace, and one end of the cyclone dust collector's air outlet communicates with the air inlet of the jacket. This livestock and poultry manure drying and treatment mechanism achieves highly efficient dehydration: by installing a unique stirring component inside the drying furnace, especially an inclined trowel, the fluid livestock and poultry manure can be continuously and evenly spread onto the inner wall of the drying furnace and scraped, greatly increasing the contact area between the manure and hot air, accelerating the evaporation rate of moisture, and achieving rapid dehydration. Compared with traditional treatment methods, the dehydration efficiency is significantly improved.

Description

Technical Field

[0001] This invention relates to the technical field of poultry manure treatment equipment, specifically a livestock and poultry manure drying and treatment mechanism. Background Technology

[0002] With the large-scale and intensive development of livestock and poultry farming, the amount of livestock and poultry manure produced is increasing daily. Improper treatment of livestock and poultry manure can not only cause serious pollution to the surrounding environment, such as emitting foul odors and breeding large numbers of pathogens, but may also lead to a series of ecological problems such as eutrophication of water bodies and soil pollution. Therefore, how to efficiently and environmentally treat livestock and poultry manure has become an important issue that urgently needs to be addressed.

[0003] Currently, common methods for treating livestock and poultry manure mainly include direct application to the field, composting, and simple drying. While direct application can provide nutrients to the soil to some extent, insufficiently treated manure may carry a large number of pathogens, parasite eggs, and weed seeds, easily harming crops and the soil ecosystem. Composting, although it allows manure to decompose into organic fertilizer through microbial action, is time-consuming, requires a large area, and generates odors that are difficult to control effectively, still impacting the surrounding environment. Simple drying typically only dehydrates the manure initially, resulting in inconsistent product quality, limited applications, and often high energy consumption and costs.

[0004] Furthermore, existing livestock and poultry manure treatment devices have numerous design and functional shortcomings. For example, the manure is heated unevenly during the drying process, resulting in low dehydration efficiency and difficulty in quickly and thoroughly removing moisture. Simultaneously, in terms of heat utilization, most devices do not adequately consider energy recycling, leading to energy waste. In the exhaust gas treatment stage, they also fail to effectively treat the vapors containing odors, harmful gases, and livestock and poultry manure dust generated during the drying process, directly polluting the atmospheric environment.

[0005] In summary, developing a treatment device that can efficiently dehydrate, fully utilize energy, reduce environmental pollution, and produce high-quality products from livestock and poultry manure is of great practical significance. This invention aims to solve the problems existing in the prior art. Summary of the Invention

[0006] The purpose of this invention is to provide a livestock and poultry manure drying and processing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A livestock and poultry manure drying and processing device includes a preheating furnace and a drying furnace. Both the preheating furnace and the drying furnace have stirring components installed in their inner cavities. The preheating furnace is connected to the drying furnace via a material conveying pipe, and the outer wall of the preheating furnace has a jacket. The inner cavity of the drying furnace is connected to the jacket, and a cyclone dust collector is installed between the inner cavity of the drying furnace and the jacket. One end of the cyclone dust collector's air inlet is connected to the inner cavity of the drying furnace, and one end of the cyclone dust collector's air outlet is connected to the air inlet of the jacket. One end of the jacket's air outlet is connected to a heat exchanger. The hot air outlet of the heat exchanger is connected to the inner cavity of the preheating furnace, and the cold air outlet of the heat exchanger is connected to a dust removal spray tower. A combustion furnace is installed at one end of the drying furnace.

[0009] Preferably, the hot air outlet of the heat exchanger is also connected to the inner cavity of the preheating furnace via a third pipe, and the inner cavity of the preheating furnace is connected to the dust removal spray tower via a second pipe.

[0010] Preferably, the outer wall of the preheating furnace is provided with a raw material inlet, and a raw material trough is provided near the raw material inlet. The raw material trough is connected to the raw material inlet via a feeding conveyor belt.

[0011] Preferably, both the preheating furnace and the drying furnace have an insulation layer on their outer walls.

[0012] Preferably, the discharge port of the drying oven is equipped with a constant temperature storage box.

[0013] A mixing mechanism for drying livestock and poultry manure includes a drying oven with a cylindrical inner wall. A mixing element is arranged at the center of the drying oven. The mixing element includes a roller. Mixing blades are evenly distributed on the outer wall of the roller. A trowel is fixed to the free end of each mixing blade. A gap is left between the trowel and the inner wall of the drying oven.

[0014] Preferably, the free end of the trowel is toothed.

[0015] Preferably, the longitudinal and transverse surfaces of the trowel and the mixing blade are inclined at a certain angle.

[0016] Preferably, the outer wall of the roller is provided with a baffle plate between the stirring blades.

[0017] A method for drying livestock and poultry manure and utilizing waste heat.

[0018] S1, the livestock and poultry manure is made into a fluid state and introduced into the preheating furnace to drive the stirring component inside the preheating furnace to work;

[0019] S2, the combustion furnace is ignited to heat the inside of the drying furnace, and the cyclone dust collector is controlled to work to introduce the hot air inside the drying furnace into the inner side of the jacket of the preheating furnace to heat the preheating furnace;

[0020] S3, the preheating furnace introduces the preheated material into the drying furnace. The material generates a large amount of steam after being heated. After being removed by the cyclone dust collector, the steam is introduced into the jacket to continuously heat the preheating furnace.

[0021] S4, then use a heat exchanger to collect the gas discharged from the jacket, recover the waste heat, and then reuse it;

[0022] S5, the gas discharged from the cooled jacket and the gas discharged from the preheating furnace are introduced into the dust removal spray tower for dust suppression treatment;

[0023] S6, the dried material is introduced into the inside of a constant temperature storage box for sterilization when used as fertilizer; when used as fuel, it is directly discharged into a granulator for granulation.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This livestock and poultry manure drying and treatment facility

[0026] Energy recycling: On the one hand, the burner uses dried and shaped livestock and poultry manure as fuel, achieving self-sufficiency in its own energy, reducing dependence on external energy and lowering processing costs; on the other hand, the steam generated by the drying furnace is introduced into the jacket of the preheating furnace after dust removal to heat the preheating furnace, saving preheating costs. Then, the waste heat of the gas discharged from the jacket is reused using a heat exchanger, realizing energy recycling and improving energy efficiency.

[0027] Environmentally friendly: The equipment is equipped with a cyclone dust collector and a spray tower. The cyclone dust collector can effectively separate dust from the cooled materials; the dust removal spray tower treats livestock and poultry manure dust and other pollutants contained in the steam before emission, significantly reducing pollution to the atmospheric environment and meeting environmental protection requirements.

[0028] High-efficiency dehydration: By setting up a unique stirring component in the drying oven, especially the inclined trowel, the fluid livestock and poultry manure can be continuously and evenly spread onto the inner wall of the drying oven and scraped, which greatly increases the contact area between the livestock and poultry manure and the hot air, accelerates the evaporation rate of moisture, and achieves rapid dehydration. Compared with traditional treatment methods, the dehydration efficiency is greatly improved.

[0029] High product quality: After drying, cooling and dust removal, the material enters the pelletizer and is extruded into pellet fuel. Compared with products made by traditional processing, pellet fuel is more durable and improves the product quality and application value of livestock and poultry manure treatment, thus expanding its application scope. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a corner of the raw material inlet in a preferred embodiment of the present invention;

[0031] Figure 2 This is a three-dimensional structural diagram of a corner of the discharge pipe in a preferred embodiment of the present invention;

[0032] Figure 3 This is a three-dimensional structural diagram of one corner of the fire inlet in a preferred embodiment of the present invention;

[0033] Figure 4 This is a three-dimensional structural diagram of a corner of a dust removal spray tower in a preferred embodiment of the present invention;

[0034] Figure 5 This is a cross-sectional view of a preheating furnace in a preferred embodiment of the present invention;

[0035] Figure 6 This is a three-dimensional structural diagram of a stirring assembly according to a preferred embodiment of the present invention;

[0036] Figure 7 This is a side view of the stirring assembly in a preferred embodiment of the present invention.

[0037] Figure 8 This is a schematic cross-sectional view of the stirring assembly in a preferred embodiment of the present invention.

[0038] In the diagram: 1. Preheating furnace; 2. Drying furnace; 3. Constant temperature storage box; 4. Dust removal spray tower; 5. Mixing assembly; 51. Roller; 52. Mixing blade; 53. Trowel board; 54. Wind baffle; 6. Discharge pipe; 7. Cyclone dust collector; 8. Raw material inlet; 81. Raw material trough; 82. Feeding conveyor belt; 9. First pipe; 10. Second pipe; 11. Third pipe; 12. Fourth pipe; 13. Fifth pipe; 14. Heat exchanger; 15. Sixth pipe; 16. Combustion furnace; 17. Preheating material inlet; 18. Material conveying pipe; 19. Fire inlet; 20. Fan; 21. Jacket. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figure 1-8 The present invention provides a technical solution:

[0041] A livestock and poultry manure drying and processing device includes a preheating furnace 1 and a drying furnace 2. The preheating furnace 1 is used to preheat the material and then introduce it into the drying furnace 2 for drying. The inner cavities of the preheating furnace 1 and the drying furnace 2 are both equipped with stirring components 5 for stirring the material and pushing the material forward. The stirring components 5 are connected to a drive motor.

[0042] The preheating furnace 1 has a raw material inlet 8 at one end of its outer wall. The raw material inlet 8 has a hopper at the top and a screw conveyor at the bottom of the hopper. A raw material trough 81 is located near the raw material inlet 8 and is connected to the raw material inlet 8 by a feeding conveyor belt 82.

[0043] The preheating furnace 1 is connected to the preheating inlet 17 of the drying furnace 2 through a material conveying pipe 18. A raw material outlet is provided at the bottom of the outer wall of the preheating furnace 1 away from the raw material inlet 8. A material conveying pipe 18 is provided at the raw material outlet, and the material conveying pipe 18 uses a screw conveyor.

[0044] The preheating furnace 1 has an outer wall with a jacket 21. A serpentine plate is set on the inner side of the jacket 21 to form a spiral partition on the inner wall of the jacket 21, so that an air duct is formed in the jacket 21 that rotates around the outer wall of the preheating furnace 1. One end of the air outlet of the inner cavity of the drying furnace 2 is connected to one end of the air inlet of the jacket 21, so that the hot air discharged from the drying furnace 2 is used as the heat source for preheating the material in the preheating furnace 1.

[0045] A cyclone dust collector 7 is installed between the inner cavity of the drying oven 2 and the jacket 21. One end of the cyclone dust collector 7 is connected to the inner cavity of the drying oven 2 via a sixth pipe 15, and the other end is connected to the air inlet of the jacket 21 via a first pipe 9. A cyclone dust collector 7 is installed at the connection between the first pipe 9 and the sixth pipe 15 because when the material is dried inside the drying oven 2, the evaporated moisture and dust generated by stirring mix in the exhaust hot air. The cyclone dust collector 7 recovers the dust from the hot air, preventing a large amount of dust from entering the jacket 21 and causing blockage.

[0046] One end of the air outlet of the interlayer 21 is connected to a heat exchanger 14 via a fourth pipe 12. The heat exchanger 14 is used to recover the gas discharged from the interlayer 21. The hot air outlet of the heat exchanger 14 is connected to the inner cavity of the preheating furnace 1. Two sets of heat exchangers 14 are connected in series, and the fan 20 is controlled to drive the gas flow inside the heat exchanger 14. After recovering heat, the heat source is guided back to the inner cavity of the preheating furnace 1. The cold air outlet of the heat exchanger 14 is connected to a dust removal spray tower 4. The heat exchanger 14 is connected to the dust removal spray tower 4 via a fifth pipe 13. The dust removal spray tower 4 is used to spray and treat the steam generated by drying the material to reduce dust, which facilitates the discharge.

[0047] A combustion furnace 16 is provided at one end of the drying furnace 2, and a fire inlet 19 is opened at one end of the drying furnace 2. The open flame of the combustion furnace 16 enters the inner cavity of the drying furnace 2 through the fire inlet 19. A certain gap is left between the flame outlet of the combustion furnace 16 and the fire inlet 19 to allow air to enter the fire inlet 19. It is best to use a biomass combustion furnace for the combustion furnace 16, because the dried manure can be granulated and used as fuel for the combustion furnace 16, forming a cycle.

[0048] Both the drying oven 2 and the preheating oven 1 have an insulation layer on their outer walls to reduce temperature transfer to the outside environment. The bottom of the drying oven 2, away from the fire inlet 19, is provided with a discharge pipe 6, which can use the same screw conveyor as the material conveying pipe 18.

[0049] The output end of the discharge pipe 6 is connected to a constant temperature storage box 3 or an extrusion granulator. The dried fecal powder can be sterilized in the constant temperature storage box 3 to improve the sterilization effect.

[0050] The hot air outlet of the heat exchanger 14 is also connected to the inner cavity of the preheating furnace 1 via a third pipe 11, allowing hot air to directly heat the raw materials inside the preheating furnace 1. The inner cavity of the preheating furnace 1 is connected to the dust removal spray tower 4 via a second pipe 10.

[0051] A mixing mechanism for drying livestock and poultry manure includes a drying oven 2 with a cylindrical inner wall. A mixing element 5 is positioned at the center of the drying oven 2. The mixing element 5 includes a roller 51, with mixing blades 52 evenly distributed on the outer wall of the roller 51. A trowel 53 is fixedly connected to the free end of each mixing blade 52, with a gap between the trowel 53 and the inner wall of the drying oven 2. The roller 51 is driven to rotate by a drive motor, which in turn drives the mixing blades 52. The mixing blades 52 then drive the trowel 53, which spreads the material onto the inner wall of the drying oven 2, dispersing the material and increasing the drying effect. The trowel 53 rotates rapidly, simultaneously spreading and scraping the material onto the inner wall of the drying oven 2.

[0052] The free end of the trowel 53 is set in a toothed shape, making the surface of the material coated on the inner wall of the drying oven 2 corrugated, which increases the contact area between the material and the hot air. At the same time, the trowel 53 scrapes off the dried material on the surface, and the material falls off in powder form.

[0053] The longitudinal and transverse surfaces of the trowel 53 and the mixing blade 52 are both inclined at a certain angle. Setting the transverse surfaces of the trowel 53 and the mixing blade 52 at a certain angle facilitates the application of material onto the inner wall of the drying oven 2. Setting the longitudinal surfaces of the trowel 53 and the mixing blade 52 at a certain angle facilitates the forward propulsion of the material.

[0054] A baffle plate 54 is provided on the outer wall of the roller 51 between the stirring blades 52. When the open flame of the combustion furnace 16 enters the inner cavity of the drying furnace 2 through the fire inlet 19, the gas will flow from one end of the fire inlet 19 to the other end of the sixth pipe 15. The baffle plate 54 provided in the center of the drying furnace 2 blocks the gas, causing the hot gas to flow close to the inner wall of the drying furnace 2, thereby increasing the contact effect between the hot gas and the material.

[0055] A method for drying livestock and poultry manure and utilizing waste heat.

[0056] S1, the livestock and poultry manure is made into a fluid state, and then the material is put into the raw material tank 81. The feeding conveyor belt 82 is then driven to guide the raw material into the raw material inlet 8, and then into the preheating furnace 1. The stirring component inside the preheating furnace 1 is driven to work to propel the material.

[0057] S2, the combustion furnace 16 is ignited to heat the inside of the drying furnace 2, and the cyclone dust collector 7 is controlled to work to introduce the hot air inside the drying furnace 2 into the inner side of the jacket 21 of the preheating furnace 1 to heat the preheating furnace 1.

[0058] S3, the preheating furnace 1 introduces the preheated material into the drying furnace 2. In the preheating furnace 1 and the drying furnace 2, the roller 51 is driven to rotate by the drive motor. The roller 51 drives the stirring blade 52 to rotate. The stirring blade 52 drives the trowel 53. The trowel 53 spreads the material onto the inner wall of the drying furnace 2, dispersing the material and increasing the drying effect. The trowel 53 rotates rapidly, spreading and scraping the material on the inner wall of the drying furnace 2. The material is heated in the drying furnace 2 to generate a large amount of steam. After being dusted by the cyclone dust collector 7, it is introduced into the jacket 21 to continuously heat the preheating furnace 1. A large amount of dust is filtered out when the steam passes through the cyclone dust collector 7.

[0059] S4, then the gas discharged from the jacket 21 is collected by the heat exchanger 14 for waste heat recovery and reuse. The waste heat is introduced into the inner cavity of the preheating furnace 1 through the third pipe 11.

[0060] S5, the gas discharged from the cooled jacket 21 and the gas discharged from the preheating furnace 1 are introduced into the dust removal spray tower 4 for dust reduction treatment.

[0061] S6, the dried material is introduced into the inner side of the constant temperature storage box 3 for sterilization when used as fertilizer; when used as fuel, it is directly discharged into the granulator for granulation.

[0062] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limiting this invention.

[0063] Furthermore, the terms “first,” “second,” “third,” “fourth,” “fifth,” “sixth,” and “seventh” 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 with “first,” “second,” “third,” “fourth,” “fifth,” “sixth,” and “seventh” may explicitly or implicitly include at least one of those features.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A livestock and poultry manure drying and processing device, comprising a preheating furnace (1) and a drying furnace (2), wherein the inner cavities of the preheating furnace (1) and the drying furnace (2) are each equipped with a stirring assembly (5), and the preheating furnace (1) is connected to the drying furnace (2) via a material conveying pipe (18), characterized in that: The preheating furnace (1) has an outer wall with a jacket (21); the inner cavity of the drying furnace (2) is connected to the jacket (21), and a cyclone dust collector (7) is provided between the inner cavity of the drying furnace (2) and the jacket (21). One end of the air inlet of the cyclone dust collector (7) is connected to the inner cavity of the drying furnace (2), and one end of the air outlet of the cyclone dust collector (7) is connected to the air inlet of the jacket (21); one end of the air outlet of the jacket (21) is connected to a heat exchanger (14), the hot air outlet of the heat exchanger (14) is connected to the inner cavity of the preheating furnace (1), the cold air outlet of the heat exchanger (14) is connected to a dust removal spray tower (4), and one end of the drying furnace (2) is provided with a combustion furnace (16). The hot air outlet of the heat exchanger (14) is also connected to the inner cavity of the preheating furnace (1) through a third pipe (11), and the inner cavity of the preheating furnace (1) is connected to the dust removal spray tower (4) through a second pipe (10). The inner wall of the drying oven (2) is cylindrical. A stirring assembly (5) is set at the center of the drying oven (2). The stirring assembly (5) includes a roller (51). Stirring blades (52) are evenly distributed on the outer wall of the roller (51). A trowel (53) is fixed to the free end of each stirring blade (52). A gap is left between the trowel (53) and the inner wall of the drying oven (2). The free end of the trowel (53) is set in a toothed shape; The longitudinal and transverse surfaces of the trowel (53) and the mixing blade (52) are both inclined at a certain angle; The outer wall of the roller (51) is provided with a baffle plate (54) between the stirring blades (52).

2. The livestock and poultry manure drying and treatment device according to claim 1, characterized in that: The preheating furnace (1) has a raw material inlet (8) on its outer wall and a raw material trough (81) is provided near the raw material inlet (8). The raw material trough (81) is connected to the raw material inlet (8) via a feeding conveyor belt (82).

3. The livestock and poultry manure drying and treatment device according to claim 1, characterized in that: The outer walls of both the preheating furnace (1) and the drying furnace (2) are provided with heat insulation layers.

4. The livestock and poultry manure drying and treatment device according to claim 1, characterized in that: The discharge port of the drying oven (2) is equipped with a constant temperature storage box (3).

5. The drying and waste heat utilization method of a livestock and poultry manure drying and treatment device according to claim 4, characterized in that: S1, the livestock and poultry manure is made into a fluid and introduced into the preheating furnace (1) to drive the stirring component inside the preheating furnace (1) to work; S2, the combustion furnace (16) is ignited to heat the inside of the drying furnace (2), and the cyclone dust collector (7) is controlled to work to introduce the hot air inside the drying furnace (2) into the inner side of the jacket (21) of the preheating furnace (1) to heat the preheating furnace (1); S3, the preheating furnace (1) introduces the preheated material into the drying furnace (2). The material generates a large amount of steam after being heated. After being dusted by the cyclone dust collector (7), it is introduced into the jacket (21) to continuously heat the preheating furnace (1). S4, then use heat exchanger (14) to collect the gas discharged from the jacket (21), recover the waste heat, and then reuse it; S5, the gas discharged from the cooled jacket (21) and the gas discharged from the preheating furnace (1) are introduced into the dust removal spray tower (4) for dust reduction treatment; S6, the dried material is introduced into the inner side of the constant temperature storage box (3) for sterilization when used as fertilizer; and directly discharged into the granulator for granulation when used as fuel.

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