CN204752498U - Cow dung recycle system - Google Patents

Abstract

The utility model belongs to animal manure handles and to utilize the field, in particular to cow dung recycle system, and it includes cowshed, set septic tank, homogenate pond, anaerobic fermentation tank, dry wet -separating machine and cow dung drying chamber according to cow dung treatment flowsheet in proper order, the cow dung drying chamber be connected with heating source methane burning room, this methane burning room is connected to anaerobic fermentation tank through marsh gas pipeline, is provided with the desulfurizing tower between this methane burning room and the anaerobic fermentation tank. The utility model discloses a just, the marsh gas that produces behind the anaerobic fermentation cow dung comes the burning solid -state excrement and urine of drying, and the solid -state excrement and urine after the drying is expected as the ox mattress to improve ox faecal utilization ratio greatly, realized cow dung recovery and recycled to have very strong economy, social.

Description

A cow dung recycling system

technical field

The utility model belongs to the field of treatment and utilization of livestock and poultry manure, in particular to a cow manure recycling system, more specifically, to a recycling system for preparing cow bedding with cow manure as a raw material.

Background technique

As a kind of animal organic fertilizer, cow dung is a precious resource. Cattle eat a lot of food and excrete more feces and urine than other livestock every day. An adult cow excretes 28.4-48.1kg per day and night. The daily urine output ranges from 6.5 to 14.1kg. A large amount of cow dung not only pollutes the air and water sources, but also occupies a large area of land. At present, the treatment methods of cow dung at home and abroad are mainly used for composting and biogas preparation.

Using the composting method, although the green organic fertilizer made from cow dung is relatively environmentally friendly through biochemical processing, but because the texture of cow dung is compact and its composition is similar to that of pig manure, the manure has high water content, poor aeration, and slow decomposition. , the fermentation temperature is low, and the fertilizer effect is slow, so cow dung is commonly called "cold fertilizer".

The treatment method for preparing biogas is to directly ferment a large amount of cow dung in anaerobic fermentation equipment to produce a large amount of biogas. After fermentation, the treatment method for the remaining residue is usually unsatisfactory.

In order to solve the above problems, various solutions have appeared at present. For example, Chinese patent literature discloses a new type of cow manure treatment system [Patent No. ZL201320634426.3], which consists of a septic tank, a solid-liquid separator, a drying Composed of a device, a pulverizer, and a biogas digester, the cow manure is sent to the solid-liquid separator through the raw material conveying pipe by the manure flushing pump for solid-liquid separation, and the separated solid cow manure is output from the outlet of the solid-liquid separator. Enter the drier for drying treatment, the dried cow manure is processed into cow bedding material through the crushing system, and the separated liquid enters the underground biogas digester through the separation liquid output pipe.

The solid feces separated by the above technical solution can be used as bedding material for cattle bedding, and the separated liquid realizes zero discharge and will not pollute the environment. However, it has at least two defects: 1. The utilization rate of feces is not high, no effective anaerobic fermentation process is carried out and only the biogas produced by biogas slurry is used, so the biogas produced is very limited, especially for the produced biogas The utilization of biogas is even more deficient, and a recycling system cannot be formed, that is, the biogas produced by the feces itself is used to supply the heating and drying of solid feces; During high-temperature fermentation, a large amount of H ₂ S is carried. Since there is still a large amount of water vapor in the biogas, the water and the H ₂ S in the biogas work together to accelerate the corrosion and blockage of metal pipes, valves and flow meters. In addition, H ₂ S burns to generate SO _{2 ,} which combines with water vapor in the combustion product to form sulfurous acid, which causes corrosion on the metal surface of the equipment, and also causes pollution to the atmospheric environment and affects human health. Therefore, before using the biogas, the H ₂ S must be removed. Based on the above, this case arises.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide a recycling system for preparing cow bedding materials with cow dung as raw material, which uses the biogas prepared after anaerobic fermentation of cow manure to burn and heat the cow dung residue to obtain cow dung. Mattress.

The technical solution adopted by the utility model to solve the problem is:

A cow dung recovery and utilization system, according to the cow dung treatment process, sequentially includes a cow house, a manure collection tank, a homogenization tank, an anaerobic fermentation tank, a dry-wet separator and a cow dung drying room, the cow dung drying room A heating source biogas combustion chamber is connected, and the biogas combustion chamber is connected to an anaerobic fermentation tank through a biogas transmission pipeline, and a desulfurization tower is arranged between the biogas combustion chamber and the anaerobic fermentation tank.

In the above cow dung recovery and utilization system, the desulfurization tower is connected to the biogas combustion chamber and the heating water tower respectively through the biogas delivery pipeline.

In the above cow dung recycling system, the heating water tower is connected to the anaerobic fermentation tank, and the hot water is transported to the inner wall interlayer of the anaerobic fermentation tank through the hot water delivery pipeline.

In the above-mentioned cow dung recycling system, a drain is provided below the anaerobic fermentation tank.

In the above-mentioned cow dung recycling system, a grid for isolating long thick fibers is also provided between the manure collection tank and the homogenization tank.

In the above cow dung recycling system, a cow dung conveying auger is arranged in the cow dung drying chamber.

In the above cow dung recycling system, the cow dung drying chamber is also provided with a heat exhaust gas pipeline.

In the above cow dung recycling system, a manure flushing pump is arranged between the cow house and the manure collection tank.

In the above cow dung recycling system, the top of the anaerobic fermentation tank is provided with a biogas outlet.

The beneficial effects of the utility model are: the utility model burns and dries the solid feces through the methane produced by the anaerobic fermentation of the cow feces, and the dried solid feces are used as the bedding material of the cow bed, thereby greatly improving the utilization rate of the cow feces, Recycling and reuse are realized, which has strong economic and social benefits. And biogas heating can also be used to heat water to keep warm in the anaerobic fermentation tank and other uses in the farm.

Description of drawings

Fig. 1 is the utility model not showing the structural representation of heating water tower;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a schematic structural diagram of an anaerobic fermentation tank.

In the figure: 1. Cowshed, 2. Manure flushing pump, 4. Septic tank, 5. Grille, 6. Homogenizer tank, 7. Desulfurization tower, 8. Anaerobic fermentation tank, 81. Anaerobic fermentation tank inner wall interlayer, 82, hot water delivery pipe, 83, water outlet, 84, biogas outlet, 9, wet and dry separator, 10, biogas combustion chamber, 11, cow dung drying room, 12, cow dung conveying auger, 13. Cattle mattress material, 14. Exhaust heat pipe, 15. Heating water tower.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model will be further described

As shown in Fig. 1 to Fig. 3, the utility model provides a kind of cow dung recycling system, according to the cow dung treatment process, sequentially includes a cow house 1, a manure collecting tank 4, a homogenizing tank 6, anaerobic fermentation tank 8, dry Wet separator 9 and cow dung drying chamber 11, described cow dung drying chamber 11 is connected with heating source biogas combustion chamber 10, and this biogas combustion chamber 10 is connected to anaerobic fermentation tank 8 through biogas delivery pipeline, and this biogas combustion A desulfurization tower 7 is arranged between the chamber 10 and the anaerobic fermentation tank 8, and iron oxide is used as a desulfurizer in the desulfurization tower 7 to desulfurize the biogas, and the desulfurized biogas is connected to the biogas combustion chamber 10 and the heating water tower 15 respectively through the delivery pipeline. The heating water tower 15 is connected with the anaerobic fermentation tank 8, and in the low temperature state, hot water is transported to the inner wall interlayer 81 of the anaerobic fermentation tank 8 through the hot water delivery pipeline 82, for maintaining the temperature in the anaerobic fermentation tank 8. The bottom of the fermenter 8 is provided with a drain port 83, which can be used for water discharge. The cow dung drying chamber 11 is provided with a cow dung conveying auger 12 for conveying cow dung. The cow dung drying chamber 11 is also provided with a heat exhaust pipe. 14. To prevent indoor danger due to high air temperature, a biogas outlet 84 is provided on the top of the anaerobic fermentation tank 8, and the biogas is connected to all places of use through pipelines.

The working principle of the utility model is as follows: the cow feces produced in the cowshed 1 are gathered in the manure collection tank 4, and a manure washing pump 2 is arranged between the cow shed 1 and the manure collection tank 4, and the manure washing pump 2 will collect the manure The liquid manure in the pool 4 is pumped into the cowshed 1 to flush the manure back into the cesspool 4 to form a cycle. When the cow manure in the cesspool 4 reaches a certain amount, it is pumped to the homogenization tank 6, and the cesspool 4 and A grid 5 for isolating long and thick fibers is set between the homogenization tanks 6, and then fermented in the anaerobic fermentation tank 8, and the residue after fermentation is separated from the solid and liquid by the dry-wet separator 9, and the solid cow dung enters the cow dung drying process. The drying chamber 11 is dry, while the heat source of the cow dung drying chamber 11 is produced by the biogas combustion produced by the anaerobic fermentation tank 8. The biogas produced by the anaerobic fermentation tank 8 is firstly desulfurized by the desulfurization tower 7, and part of it is used in the biogas combustion chamber 10. The cow dung is internally burned and dried, and part of it is used to heat water to maintain the temperature in the anaerobic fermentation tank 8 at a low temperature. Finally, the cow dung is dried and pulverized in the cow dung drying chamber 11, and the cow dung becomes a cow mattress with a water content of about 30%. material.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, these Improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims (9)

1. A cow dung recovery and utilization system is characterized in that: according to the cow dung treatment process, it comprises successively a cowshed (1), a cesspool (4), a homogenate tank (6), anaerobic fermentation tank (8), a dry Wet separator (9) and cow dung drying chamber (11), described cow dung drying chamber (11) is connected with heating source biogas combustion chamber (10), and this biogas combustion chamber (10) is connected by biogas delivery pipeline To the anaerobic fermentation tank (8), a desulfurization tower (7) is arranged between the biogas combustion chamber (10) and the anaerobic fermentation tank (8). 2. A cow dung recycling system according to claim 1, characterized in that: the desulfurization tower (7) is connected to the biogas combustion chamber (10) and the heating water tower (15) respectively through a biogas delivery pipeline. 3. A kind of cow dung recycling system according to claim 2, characterized in that: the heating water tower (15) is connected to the anaerobic fermentation tank (8), and the hot water is transported through the hot water delivery pipeline (82) To the inner wall interlayer (81) of the anaerobic fermentation tank. 4. A cow dung recycling system according to claim 3, characterized in that: a drain port (83) is arranged below the anaerobic fermentation tank (8). 5. A kind of cow dung recycling system according to claim 1, characterized in that: a grid for isolating long thick fibers is also arranged between the septic tank (4) and the homogenizer tank (6) (5). 6. A cow dung recycling system according to claim 1, characterized in that: the cow dung drying chamber (11) is provided with a cow dung conveying auger (12). 7. A cow dung recovery and utilization system according to claim 6, characterized in that: said cow dung drying chamber (11) is also provided with a heat exhaust pipe (14). 8. A cow dung recycling system according to claim 1, characterized in that: a manure flushing pump (2) is arranged between the cowshed (1) and the manure collection tank (4). 9. A cow dung recycling system according to claim 3, characterized in that: the top of the anaerobic fermentation tank (8) is provided with a biogas outlet (84).