Laboratory high-speed exhaust duct device

The utility model relates to a laboratory high-speed exhaust cylinder device which comprises a fan and an exhaust cylinder connected to an outlet of the fan, and the fan is connected with the exhaust cylinder through a connector. An air outlet is formed in the top end of the exhaust cylinder; the exhaust cylinder is a vertical air cylinder; a drainage funnel is arranged in the exhaust cylinder; an exhaust channel is reserved between the outer wall of the drainage funnel and the inner wall of the exhaust cylinder; the bottom of the drainage funnel is connected with a drainage pipe; and the drainage funnel is suspended and fixed in the exhaust cylinder through at least two connecting pieces. According to the utility model, the exhaust cylinder is vertically arranged, and the air outlet of the fan is vertically upward, so that air resistance can be reduced to the greatest extent under the operation of the high-speed fan, waste gas in a laboratory can be smoothly discharged, and the conditions of energy loss and