Combined suspension degasser

The invention provides a combined suspension degasser. The degasser comprises a stirring cylinder, a stirring shaft, a stirring rod, a motor, a liquid inlet, a liquid outlet, an air inlet and an air outlet, wherein the liquid inlet, the liquid outlet, the air inlet and the air outlet are formed in the stirring cylinder; a float cylinder sleeves the exterior of the stirring cylinder, the bottom surface of the float cylinder is horizontally and hermetically connected and fixed to the bottom surface of the stirring cylinder, the top surface of the float cylinder is hermetically connected and fixed around the periphery of the upper part of the stirring cylinder, a closed annular floating cavity is formed between the float cylinder and the stirring cylinder, and the top and bottom of the floatcylinder are provided with a liquid supplementing port and a discharge port communicating with an inner cavity of the float cylinder respectively; and two or more limiting pieces are arranged on the periphery of the float cyl