High-efficiency hull breaking integrated system for performing anaerobic fermentation on livestock and poultry excrement and straw mixture

Abstract

The invention discloses a high-efficiency hull breaking integrated system for performing anaerobic fermentation on a livestock and poultry excrement and straw mixture. The high-efficiency hull breaking integrated system comprises a central stirring unit, a cyclic spraying unit and an upper dross cutting unit, wherein the central stirring unit is arranged on a stirring shaft, the cyclic spraying unit is arranged on the inner wall of a fermentation tank; a first-layer stirrer of the central stirring unit is positioned below the liquid level, a propeller type stirring blade is used for upward turning and pushing materials to flow upward, scatter materials and break hulls, and propeller type stirring blades of the multi-layer stirrers below are used for downward pressing and pushing materialsto flow from bottom to top to form a convection circulation flow field; a nozzle of the cyclic spraying unit is obliquely arranged above the liquid level and performs jet impact to materials on the liquid level for breaking hulls; a bell mouth of a cutting head of the upper-part dross cutting unit is arranged at the liquid level, the cutting head is used for cutting hulled materials on the liquidlevel, and the bell mouth is used for sucking dross and discharging dross out of the tank body. The high-efficiency hull breaking integrated system integrates the anaerobic fermentation stirring, cutting and spraying hull breaking functions, is suitable for efficiently treating livestock and poultry excrement and straw mixtures in large anaerobic fermentation tanks, is high in gas production rateand has energy-saving and emission-reduction effects.

Description

technical field [0001] The invention relates to a high-efficiency shell breaking integrated system for anaerobic fermentation of mixed raw materials of livestock and poultry manure and straw, and belongs to the technical field of biological fermentation. Background technique [0002] Large-scale livestock and poultry breeding in rural areas has become a dominant industry, but at the same time it has also caused serious pollution problems. The pollution control of livestock and poultry farm waste directly affects the ecological balance and living environment in rural areas, and turns the pollution of livestock and poultry manure waste into treasure and resources. Reuse is the most effective solution. Biogas projects have good comprehensive benefits such as energy, ecology and economy, and are actively promoted and widely used in rural areas. [0003] A large number of crops such as rice, corn, and wheat are planted in rural areas to produce a large amount of straw, which has ...

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Problems solved by technology

[0007] The problem to be solved by the present invention is that the structure of the existing anaerobic fermentation equipment is unreasonable, the raw materials cannot be effectively treated to form scum crusts on the liquid surface of the reactor, the stirring of the raw materials is not sufficient and uniform, and the biogas production rate is low. The high-efficiency hull breaking integrated system for anaerobic fermentation of mixed raw materials of livestock and poultry manure and straw integrates three functions of anaerobic fermentation stirring, cutting, and spraying and breaking shells. Stirring of raw materials is more uniform, high gas production rate, energy saving, emission reduction, and cost saving

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