Sewage cut-off device on suction nozzle of road sweeper and road sweeper

The utility model relates to a sewage stop device on a suction nozzle of a road sweeper and the road sweeper. The suction nozzle is connected with the sewage cut-off pressing frame through the rotating pin shaft, the suction nozzle moves up and down to drive the sewage cut-off pressing frame to rotate around the rotating pin shaft, and the sewage ball head pressing seat installed at one end of thesewage cut-off pressing frame moves up and down to enable the water outlet pipe located between the sewage ball head pressing seat and the sewage pipe clamp to deform. And sewage is cut off through the deformation of the water outlet pipe. Opening and closing of the sewage pipeline are achieved along with rising and falling of the suction nozzle, an independent control system is not needed, puremechanical control is achieved, and the problems that a vehicle air source, a power source and a traditional ball valve body are not completely closed and are prone to being blocked are avoided. 本实用新型涉及一种扫路机吸嘴上的污水截止装置和扫路机，包括；吸