Dairy cow manure harmless drying device with circularly communicated gas

Abstract

The utility model discloses a dairy cow manure harmless drying device with gas circulation communication, which relates to the technical field of manure harmless treatment, and comprises a drying box, an adsorption box and a gas circulation component, the front side wall and the rear side wall of the drying box are respectively and correspondingly provided with a feed port and a discharge port, and the top wall of the drying box is provided with a vent hole; the adsorption box is located on the upper portion of the drying box and provided with an air inlet and an air outlet, and the air inlet communicates with the vent hole. The air circulation assembly comprises a suction fan and a conveying pipeline, the suction fan is fixed to the outer top wall of the drying box, and an air suction opening of the suction fan communicates with the air outlet through a connecting pipe; one end of the conveying pipeline is communicated with an exhaust outlet of the suction fan, and the other end of the conveying pipeline is communicated with an inner cavity of the drying box, so that peculiar smell generated in evaporated gas can be eliminated in the excrement drying process, and harmful tiny bacteria in the peculiar smell can be prevented from polluting the surrounding environment and causing certain harm to the body of a worker; and a large amount of heat in gas volatilized during drying is fully utilized.

Description

Technical Field

[0001] This utility model relates to the field of harmless treatment of manure, and more specifically to a gas-circulating, interconnected dairy cow manure drying device. Background Technology

[0002] Cow manure contains abundant organic matter, nitrogen, phosphorus, potassium, and other nutrients, but also carries harmful substances such as pathogens, heavy metals, and antibiotic residues. Therefore, harmless treatment is the core of cow manure management. The aim is to eliminate harmful substances in the manure through physical, chemical, or biological methods, ensuring that its utilization or discharge does not harm the environment or biological health. The principles of harmless treatment include reduction, harmlessness, resource recovery, and standardization. Modern harmless treatment of cow manure mainly includes three processes: "water flushing + solid-liquid separation," "mechanical scraper + solid-liquid separation," and "solid-liquid separation + biomass fuel." Among these, solid-liquid separation plays an indispensable role as a pretreatment for manure treatment. The main advantages of using a solid-liquid separation system are as follows: ① It greatly reduces the moisture content of manure, making it easier to transport and store manure; ② The separated solids can be used as cow bedding after simple treatment, saving ranches the cost of using sand or other materials for cow bedding, thus saving costs. They can also be processed into organic fertilizer for sale, increasing dairy farm income; ③ The content of suspended solids (SS) in the separated liquid is greatly reduced, so it can be used as a flushing source for cowshed floors or manure ditches for recycling, or as irrigation water for returning to the fields, thus saving water resources.

[0003] However, even after solid-liquid separation of cow manure, some moisture remains, potentially indicating the presence of pathogens or contaminants. This renders the separated manure unusable for further processing and creates additional transportation challenges, necessitating drying. However, the drying process still generates significant odors containing harmful microorganisms, causing secondary environmental pollution and posing health risks to workers. Furthermore, the heat generated during drying cannot be fully utilized.

[0004] Therefore, in view of the existing problems, how to provide a gas-circulating, interconnected dairy manure drying device that can eliminate the odor generated in the evaporated gas and the harmful microbacteria in the odor that could pollute the surrounding environment and cause certain harm to the health of workers, while making full use of the large amount of heat in the gas volatilized during drying, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a gas-circulating, interconnected dairy cow manure harmless drying device, which can ensure that during the drying process, the odor generated in the evaporated gas and the harmful microbacteria in the odor can be eliminated, thus eliminating pollution to the surrounding environment and harm to the health of workers. It also makes full use of the large amount of heat in the gas volatilized during drying.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas-circulating, interconnected device for the harmless drying of dairy cow manure includes:

[0008] A drying oven, wherein a feed inlet and a discharge outlet are respectively opened on the front and rear side walls of the drying oven, and a vent is opened on the top wall of the drying oven;

[0009] An adsorption box is located at the top of the drying box. The adsorption box has an air inlet and an air outlet, and the air inlet is connected to the vent hole.

[0010] A gas circulation assembly includes a suction fan and a conveying pipe. The housing of the suction fan is fixed to the outer top wall of the drying oven. The suction port of the suction fan is connected to the air outlet through a connecting pipe. One end of the conveying pipe is connected to the exhaust port of the suction fan, and the other end is connected to the inner cavity of the drying oven.

[0011] Through the above technical solution, this utility model provides a gas-circulating, interconnected dairy cow manure drying device. By setting up a drying chamber, an adsorption chamber, and a gas circulation component, it achieves the harmless drying treatment of dairy cow manure. The drying chamber dries the manure, reducing moisture and pathogens; the adsorption chamber adsorbs and filters odors and harmful microbacteria generated during the drying process, preventing secondary pollution to the environment and human health; the gas circulation component realizes the recycling of gas, allowing the heat evaporated during the drying process to be recovered, improving energy utilization efficiency and reducing energy consumption.

[0012] Preferably, in the above-mentioned gas-circulating, interconnected dairy manure harmless drying device, the drying chamber includes a chamber body and an electric heating element. The front and rear side walls of the chamber body have an inlet and an outlet, and the top wall has a vent. A side air duct is formed on the side wall of the chamber body perpendicular to the inlet and outlet, and a vent is formed on the side air duct that communicates with the inner cavity of the chamber body. The electric heating element is located within the side air duct, with one end fixed to the top wall of the chamber body. The adsorption box is located above the chamber body, and the outer casing of the suction fan is fixed to the outer top wall of the chamber body. The other end of the conveying pipe communicates with the inner cavity of the chamber body. This further refines the structure of the drying chamber by adding the chamber body, electric heating element, side air duct, and vent design. The electric heating element, located within the side air duct, can evenly heat and dry the manure within the chamber body, improving drying effect and efficiency. Simultaneously, the design of the side air duct and vent contributes to uniform heat distribution and gas circulation, further optimizing the drying process.

[0013] Preferably, the above-mentioned gas-circulating, interconnected dairy manure drying device further includes a blower. A top air duct, communicating with the side air ducts, is formed on the top wall of the main body of the container. The blower's housing is fixed to the outer top wall of the main body, and its outlet is connected to the top air duct. The addition of the blower provides a stronger airflow, accelerating gas flow within the container and allowing heat to be transferred to the manure more quickly, further improving drying efficiency. Simultaneously, the interconnection between the top and side air ducts optimizes the airflow path, making gas flow smoother and further enhancing drying effect and energy utilization efficiency.

[0014] Preferably, in the above-mentioned gas-circulating, interconnected dairy manure harmless drying device, the adsorption box includes a shell, a filter plate, an activated carbon plate, and a HEPA filter. The bottom end of the shell is fixed to the outer top wall of the box body. The bottom wall of the shell has an air inlet that communicates with the ventilation hole. The connecting pipe is fixed to the top wall of the shell and communicates with the suction end of the suction fan. The filter plate, the activated carbon plate, and the HEPA filter are horizontally fixed in sequence from bottom to top within the inner cavity of the shell. The addition of the filter plate, activated carbon plate, and HEPA filter allows for the initial filtration of large particulate impurities; the activated carbon plate has excellent adsorption properties and can adsorb odors and harmful gases; and the HEPA filter effectively filters harmful substances such as tiny bacteria. This multi-layered filtration structure greatly improves the filtration effect of the adsorption box on harmful gases and bacteria, ensuring cleaner exhaust gas and further reducing harm to the environment and human health.

[0015] Preferably, in the above-mentioned gas-circulating, interconnected dairy manure harmless drying device, the conveying pipeline includes a main conveying pipe and conveying branch pipes. One end of the main conveying pipe is fixed to the exhaust end of the suction fan, and the other end is connected to the inner cavity of the main body. Multiple conveying branch pipes are arranged at intervals on the main conveying pipe, with one end fixedly connected to the main conveying pipe and the other end connected to the inner cavity of the main body. The conveying pipeline has been optimized by adding a main conveying pipe and multiple conveying branch pipes. The conveying branch pipes are arranged at intervals on the main conveying pipe and connected to the inner cavity of the main body. This structure allows the gas to be more evenly distributed to various areas within the main body, further improving the efficiency of gas circulation and drying effect, ensuring that the manure within the main body is evenly heated, and improving the drying quality.

[0016] Preferably, the above-mentioned gas-circulating, interconnected dairy manure drying device further includes a one-way valve. One-way valves are fixed to the vent, the main conveying pipe, and the connecting pipe to ensure unidirectional gas flow. The one-way valve ensures unidirectional gas flow, prevents backflow, and avoids problems such as odor diffusion and harmful gas leakage caused by backflow, further improving the safety and reliability of the device and ensuring the stable operation of the entire gas circulation system.

[0017] Preferably, in the above-mentioned gas-circulating, interconnected dairy manure drying device, the inner wall of the adsorption chamber is provided with an insulation layer. The insulation layer reduces heat loss within the adsorption chamber and improves its insulation performance. This not only helps maintain a stable temperature within the adsorption chamber and improves adsorption efficiency, but also reduces energy waste, further enhancing the energy efficiency of the device and lowering operating costs.

[0018] Preferably, the above-mentioned gas-circulating, interconnected dairy manure harmless drying device further includes a conveying assembly. The conveying assembly includes a first drive roller, a second drive roller, a conveyor belt, and a drive motor. The first and second drive rollers correspond to the feed inlet and discharge outlet, respectively, and their two ends are rotatably connected to the side wall of the main body of the drying chamber. The conveyor belt connects the first and second drive rollers. The output end of the drive motor is connected to the first drive roller, enabling the first drive roller to drive the second drive roller via the conveyor belt. The addition of the conveying assembly, including the first drive roller, second drive roller, conveyor belt, and drive motor, enables automatic manure conveying, improving operational convenience and efficiency, and reducing the labor intensity of manual operation. Simultaneously, automatic conveying ensures uniform distribution of manure within the drying chamber, further improving drying effect and quality.

[0019] Preferably, the above-mentioned gas-circulating, interconnected dairy manure harmless drying device further includes two doors, corresponding to the feed inlet and discharge outlet respectively. The doors are slidably connected to the side wall of the main body of the container, enabling the container to be sealed. The doors allow for better control of the opening and closing of the feed inlet and discharge outlet, preventing odors and harmful gases from leaking from either outlet during the drying process. They also help maintain a stable temperature within the container, improving drying efficiency and quality.

[0020] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a gas-circulating, interconnected dairy cow manure harmless drying device, which has the following beneficial effects:

[0021] This invention achieves the harmless drying treatment of dairy cow manure by setting up a drying box, an adsorption box, and a gas circulation component. The drying box dries the manure, reducing moisture and pathogens; the adsorption box adsorbs and filters odors and harmful microorganisms generated during the drying process, preventing secondary pollution to the environment and human health; the gas circulation component enables the recycling of gas, allowing the recovery of heat volatilized during the drying process, improving energy efficiency and reducing energy consumption. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 The attached figure is a schematic diagram of the structure of a gas-circulating, interconnected dairy cow manure drying device provided by this utility model.

[0024] Figure 2 The attached figure is a structural cross-sectional view of a gas-circulating, interconnected dairy cow manure drying device provided by this utility model.

[0025] Figure 3 The attached figure is a structural cross-sectional view of a gas-circulating, interconnected dairy cow manure drying device provided by this utility model.

[0026] in:

[0027] 1-Drying oven; 11-Eater body; 12-Electric heating element; 13-Side air duct; 14-Ventilation opening; 15-Top air duct; 2-Ventilation hole; 3-Adsorption box; 31-Shell; 32-Filter plate; 33-Activated carbon plate; 34-HEPA filter; 4-Gas circulation assembly; 41-Exhaust fan; 42-Conveying pipe; 421-Main conveying pipe; 422-Branch conveying pipe; 5-Connecting pipe; 6-Conveying assembly; 61-First drive roller; 62-Second drive roller; 63-Conveyor belt; 64-Drive motor; 7-Door. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] See appendix Figure 1-3 This utility model discloses a gas-circulating, interconnected dairy cow manure drying device, comprising: a drying box 1, an adsorption box 3, and a gas circulation component 4;

[0031] The front and rear side walls of the drying oven 1 are respectively provided with a feed inlet and a discharge outlet, and the top wall of the drying oven 1 is provided with a ventilation hole 2.

[0032] The adsorption box 3 is located at the top of the drying box 1. The adsorption box 3 has an air inlet and an air outlet. The air inlet is connected to the air vent 2.

[0033] The gas circulation assembly 4 includes a suction fan 41 and a conveying pipe 42. The outer shell of the suction fan 41 is fixed to the outer top wall of the drying chamber 1. The suction port and the exhaust port of the suction fan 41 are connected through a connecting pipe 5. One end of the conveying pipe 42 is connected to the exhaust port of the suction fan 41, and the other end is connected to the inner cavity of the drying chamber 1.

[0034] To further optimize the above technical solution, the drying oven 1 includes a box body 11 and an electric heating tube 12. The feed inlet and discharge outlet are respectively opened on the front and rear side walls and the rear side wall of the box body 11. A ventilation hole 2 is opened on the top wall of the box body 11. A side air duct 13 is opened in the side wall of the box body 11. A ventilation port 14 communicating with the inner cavity of the box body 11 is opened on the side air duct 13. The electric heating tube 12 is located in the side air duct 13 and one end is fixed on the top wall of the box body 11. The adsorption box 3 is located above the box body 11. The outer shell of the suction fan 41 is fixed on the outer top wall of the box body 11. The other end of the conveying pipe 42 is connected to the inner cavity of the box body 11.

[0035] To further optimize the above technical solution, a blower is also included. A top air duct 15, which is connected to the side air duct 13, is provided on the top wall of the housing body 11. The housing of the blower is fixed on the outer top wall of the housing body 11, and the air outlet of the blower is connected to the top air duct 15.

[0036] To further optimize the above technical solution, the adsorption box 3 includes a shell 31, a filter plate 32, an activated carbon plate 33, and a HEPA filter 34. The bottom end of the shell 31 is fixed to the outer top wall of the box body 11. The bottom wall of the shell 31 is connected to the vent 2. A connecting pipe 5 is fixed on the top wall of the shell 31 and is connected to the suction end of the suction fan 41. The filter plate 32, the activated carbon plate 33, and the HEPA filter 34 are horizontally fixed in the inner cavity of the shell 31 from bottom to top.

[0037] To further optimize the above technical solution, the conveying pipe 42 includes a main conveying pipe 421 and a branch conveying pipe 422. One end of the main conveying pipe 421 is fixed to the exhaust end of the suction fan 41, and the other end is connected to the inner cavity of the box body 11. There are multiple branch conveying pipes 422, which are arranged at intervals on the main conveying pipe 421. One end of the branch conveying pipe 422 is fixedly connected to the main conveying pipe 421, and the other end is connected to the inner cavity of the box body 11.

[0038] To further optimize the above technical solution, a one-way valve is also included. One-way valves are fixed on the vent 2, the main conveying pipe 421 and the connecting pipe 5 to realize one-way gas flow.

[0039] To further optimize the above technical solution, a heat insulation layer is provided on the inner wall of the shell 31.

[0040] In one specific embodiment, the interior of the box body 11 is equipped with multiple ultraviolet germicidal lamps.

[0041] To further optimize the above technical solution, a conveying assembly 6 is also included. The conveying assembly 6 includes a first drive roller 61, a second drive roller 62, a conveyor belt 63, and a drive motor 64. The first drive roller 61 and the second drive roller 62 correspond to the feed inlet and the discharge outlet, respectively, and their two ends are rotatably connected to the side wall of the box body 11. The conveyor belt 63 connects the first drive roller 61 and the second drive roller 62. The output end of the drive motor 64 is connected to the first drive roller 61 for transmission, so that the first drive roller 61 is driven by the second drive roller 62 through the conveyor belt 63.

[0042] To further optimize the above technical solution, a box door 7 is also included. There are two box doors 7, which correspond to the feed inlet and the discharge outlet respectively. The box door 7 is slidably connected to the side wall of the box body 11, which can realize the closure of the box body 11.

[0043] The method of use and working principle of this utility model are as follows:

[0044] Open the inlet door 7 to transport the cow manure into the drying chamber 1. Then, the cow manure is evenly distributed inside the drying chamber 1 by the first drive roller 61, the second drive roller 62, the conveyor belt 63, and the drive motor 64. The electric heating tube 12 and the blower are started to dry the cow manure. At the same time, the waste generated and some excess hot air can enter the adsorption chamber 3 through the ventilation hole 2. After being fully purified by the layers of adsorption by the filter plate 32, the activated carbon plate 33, and the HEPA filter screen 34, the air is then returned to the chamber body 11 through the connecting pipe 5, the main conveying pipe 421, and the branch conveying pipe 422 under the action of the suction fan 41, completing the gas circulation.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dairy manure decontamination and drying device in gas circulation communication, characterized in that, include: Drying box (1), the front and rear side walls of the drying box (1) are respectively provided with a feed inlet and a discharge outlet, and the top wall of the drying box (1) is provided with a ventilation hole (2); An adsorption box (3) is located at the top of the drying box (1). The adsorption box (3) has an air inlet and an air outlet. The air inlet is connected to the ventilation hole (2). The gas circulation assembly (4) includes a suction fan (41) and a conveying pipe (42). The outer shell of the suction fan (41) is fixed to the outer top wall of the drying box (1). The suction port of the suction fan (41) is connected to the air outlet through a connecting pipe (5). One end of the conveying pipe (42) is connected to the exhaust port of the suction fan (41), and the other end is connected to the inner cavity of the drying box (1).

2. The device according to claim 1, wherein The drying box (1) includes a box body (11) and an electric heating tube (12). The feed inlet and the discharge outlet are respectively opened on the front and rear side walls and the rear side wall of the box body (11). The ventilation hole (2) is fixed on the top wall of the box body (11). A side air duct (13) is opened in the side wall of the box body (11). A ventilation port (14) communicating with the inner cavity of the box body (11) is opened on the side air duct (13). The electric heating tube (12) is located in the side air duct (13) and one end is fixed on the top wall of the box body (11). The adsorption box (3) is located above the box body (11). The outer shell of the suction fan (41) is fixed on the outer top wall of the box body (11). The other end of the conveying pipe (42) is connected to the inner cavity of the box body (11).

3. The device according to claim 2, wherein It also includes a blower. The top wall of the housing body (11) is provided with a top air duct (15) that communicates with the side air duct (13). The housing of the blower is fixed on the outer top wall of the housing body (11), and the air outlet of the blower is connected to the top air duct (15).

4. The device according to claim 3, wherein the device is characterized by: The adsorption box (3) includes a shell (31), a filter plate (32), an activated carbon plate (33), and a HEPA filter (34). The bottom end of the shell (31) is fixed to the outer top wall of the box body (11). The bottom wall of the shell (31) is connected to the vent (2). The connecting pipe (5) is fixed on the top wall of the shell (31) and is connected to the suction end of the suction fan (41). The filter plate (32), the activated carbon plate (33), and the HEPA filter (34) are horizontally fixed in the inner cavity of the shell (31) from bottom to top.

5. The gas circulation communicating cow excrement harmless drying device according to claim 4, characterized in that, The conveying pipe (42) includes a main conveying pipe (421) and a branch conveying pipe (422). One end of the main conveying pipe (421) is fixed to the exhaust end of the suction fan (41), and the other end is connected to the inner cavity of the box body (11). There are multiple branch conveying pipes (422), which are arranged at intervals on the main conveying pipe (421). One end of each branch conveying pipe is fixedly connected to the main conveying pipe (421), and the other end is connected to the inner cavity of the box body (11).

6. The gas circulation communicating cow excrement harmless drying device according to claim 5, characterized in that, It also includes a one-way valve, which is fixed on the vent (2), the main conveying pipe (421) and the connecting pipe (5) to realize one-way gas flow.

7. The gas-circulating, interconnected dairy cow manure drying device according to claim 6, characterized in that, The inner wall of the shell (31) is provided with a heat insulation layer.

8. The gas circulation communicating cow excrement harmless drying device according to claim 7, characterized in that, It also includes a conveying assembly (6), which includes a first drive roller (61), a second drive roller (62), a conveyor belt (63), and a drive motor (64). The first drive roller (61) and the second drive roller (62) correspond to the feed inlet and the discharge outlet, respectively, and their two ends are rotatably connected to the side wall of the box body (11). The conveyor belt (63) connects the first drive roller (61) and the second drive roller (62). The output end of the drive motor (64) is connected to the first drive roller (61) for transmission, so that the first drive roller (61) is driven by the second drive roller (62) through the conveyor belt (63).

9. The gas circulation communicating cow excrement harmless drying device according to claim 8, characterized in that, It also includes a box door (7), there are two boxes door (7), which correspond to the feed inlet and the discharge outlet respectively. The box door (7) is slidably connected to the side wall of the box body (11) so as to realize the closure of the box body (11).

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