A spiral flow stirring type biological fermentation device

Abstract

A spiral flow stirring type biological fermentation device is disclosed. The device includes a biogas digester main body, a stirring body and a drive assembly. The stirring body includes a lifting bar and a spiral plate. The lifting bar is vertically disposed at the center of the biogas main body. The spiral plate is fixed to the lower end of the lifting bar. The drive assembly includes a screw thread insert and a motor. The screw thread insert sleeves the lifting bar and is rotatably connected to the biogas digester main body around the axis of itself in a unidirection manner. The screw thread insert and the lifting bar are connected through screws to form a lead screw nut pair. The lifting bar is slidingly connected to the biogas digester main body around the axis of itself in a unidirection manner. The device achieves uniform and full stirring of a material liquid through up-down floating of the spiral plate, facilitates hull breaking and ensures the gas yield of the biogas digester.

Description

technical field [0001] The invention relates to a biogas digester, in particular to a spiral flow stirring type biological fermentation device. Background technique [0002] In today's increasingly tense energy environment and serious environmental pollution, the use of renewable energy is particularly important. For example, the biogas digesters used in farms can use domestic waste such as human and animal manure to produce combustible gas through microbial fermentation in an anaerobic environment to share with people's daily life. It is of great significance to reduce conventional energy consumption, reduce agricultural environmental pollution, improve agricultural comprehensive productivity, improve farmers' quality of life, and promote the development of agricultural circular economy. [0003] After use, it has been shown that at the initial stage of feeding the biogas digester, the feed liquid can be mixed and stirred naturally, and the gas production is relatively cons...

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Problems solved by technology

[0003] After use, it has been shown that in the initial stage of feeding the biogas digester, the material is poured into the tank manually, and the material liquid can be mixed and stirred naturally, and the gas production is relatively considerable. After a few days, the material liquid in the discharge room does not rise anymore, and the gas production in the tank stops , and when the climate of the biogas digester becomes worse in winter and spring, the upper layer of crust is likely to be formed due to improper dry-wet ratio, which is difficult to break, resulting in low utilization rate of fermentation raw materials, low or no gas production

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