Device for pressurizing, backflowing, shell breaking and stirring methane liquid at bottom layer of methane tank

The utility model discloses a device for pressurizing, backflowing, shell breaking and stirring methane liquid at the bottom layer of a methane tank. The device comprises a fermentation tank, a feeding pipe and a water pressure chamber, wherein one end of the feeding pipe is communicated with the fermentation tank; the water pressure chamber is located at one side of the fermentation tank and is communicated with the fermentation tank; a methane liquid distributor is arranged at the top inside the fermentation tank and is communicated with a water switch outside the fermentation tank through a pipeline with a water sinking curve; and a submersible pump communicated with the water switch is arranged at a discharge hole in the water pressure chamber through a pipeline. Due to the device of the utility model, the submersible pump is arranged at the discharge hole of the fermentation tank, so that the methane liquid rich in zymophyte at the bottom layer of the fermentation tank can be pumped out, and uniformly ba