Solar energy soft methane tank

The utility model relates to a solar soft marsh gas tank which is a folding and sealable cone-shaped vessel which is made of high strength and age proof soft material, and is composed of a tank cover and a tank body, a gas outlet opening is arranged on the tank cover for outputting the marsh gas in the tank, solar heat absorbing material is coated on the outer surface of the tank cover, and a thermal storage hose is laid in the tank cover, a circulating pump is arranged at one side of the tank body, one end of the circulating pump is connected with the thermal storage hose in the tank cover, the other end of the circulating pump is connected with a heating hose in the tank body, a feed opening is arranged in the middle of the tank body, and a multi-purpose discharge opening is arranged at the bottom of the tank body. Water in the thermal storage hose can be heated by utilizing the solar energy, and the temperature of the marsh gas tank is risen, so as to be advantageous to the output of the marsh gas to be im