Solar stirring biogas digester

Abstract

The invention relates to a solar stirring biogas digester. The solar stirring biogas digester comprises a fermentation tank, a constant-temperature water tank and a solar heat collecting plate. A center main shaft is arranged in the fermentation tank, the top end of the main shaft is connected with a direct-current motor, and a blade is mounted on the main shaft. A top inclined space and a bottom slope are arranged at the top and bottom of the fermentation tank respectively. A heat conducting pipe is arranged at the bottom of the fermentation tank and connected with the constant-temperature water tank. The solar heat collecting plate is arranged on the constant-temperature water tank. The problems that in the prior art, fermentation raw materials are relatively static and are rarely in contact with microorganisms, the activity of the fermentation microorganisms is not high in winter or certain cold regions are solved, biogas can be efficiently produced all the year round, additional power supplies are not needed, and the advantage of being environmentally friendly is achieved.

Description

technical field [0001] The invention relates to a biogas digester, in particular to a solar stirring biogas digester which utilizes solar energy to realize stirring and heat preservation functions. Background technique [0002] Common biogas production systems in various regions, most of the production equipment stores raw materials in a single large storage tank or in a cellar for storage and fermentation, and forms a single contact surface with the air inside the storage room, so that the fermentation raw materials have less contact with microorganisms, The microorganisms involved in the fermentation reaction cannot be fully fermented, and the amount of biogas produced is limited. Moreover, in winter or in some cold regions, the activity of fermentation microorganisms is not high, so that waste cannot be decomposed and fermented in time. Contents of the invention [0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides ...

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Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a solar agitated biogas digester, which solves the problems in the prior art that the fermentation raw materials are relatively static, have little contact with microorganisms, and the activity of fermentation microorganisms is not high in winter or in some cold regions. problem, and the present invention utilizes solar energy to realize the above functions, without the need for external power supply, and has the characteristics of environmental protection

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