Biogas fermentation device is stirred in constant pressure's automation

The utility model relates to a biogas fermentation device is stirred in constant pressure's automation belongs to biological energy field. The constant voltage fly leaf I, II bottom both sides of constant voltage fly leaf are equipped with the splint of preventing the constant voltage fly leaf and dropping, gas -collecting device's top is equipped with valve I, the top of hemispheroid is equipped with valve II on through pipe connection and pipeline in the latter half of gas -collecting device and the movable part of fermentation cylinder, pipeline and the hollow straight tube one end intercommunication that is located the fermentation cylinder, the hollow straight tube other end is equipped with the stirring rake, hollow straight tube passes through fixing device to be fixed in the movable part of fermentation cylinder, temperature control device is located the fermentation cylinder outside, the conversion zone of fermentation cylinder upper end both sides are equipped with through the feed inlet of IV contr