Water-cooled biomass gas burner

The utility model discloses a water-cooled biomass gas burner which comprises a pipe body, an inner shell is rotatably installed in the pipe body, the front end of the inner shell is fixedly connected with a burner body, a connecting pipe is fixedly installed on the periphery of the burner body, the front end of the connecting pipe is fixedly connected with an outer lining, the outer side of the burner body is sleeved with a first lantern ring, and the outer side of the first lantern ring is sleeved with a second lantern ring. A fixing pipe is fixedly connected to the front end of the first lantern ring, a second lantern ring is slidably mounted in the first lantern ring, tangent planes are arranged on the left side and the right side of the inner shell, the burner and the pipe body form a rotating structure through the inner shell, the pipe body, the inner shell and the burner are communicated with one another, and the burner, the connecting pipe and the outer lining are communicated with one another. The co