Visual venturi

The utility model provides a visual venturi relates to the venturi field. It includes venturi body and visual device. The venturi body includes sleeve pipe and inner tube, and the sleeve pipe includes preceding sleeve pipe and rear sleeve pipe, and the inner tube includes circular cone collapsible tube, choke and circular cone anemostat, the stub end and the preceding bushing of circular cone collapsible tube, and the little head end and the throat pipe connected of circular cone collapsible tube, the choke is connected with rear sleeve pipe, and the microcephaly of choke and circular cone anemostat holds and be connected, and the stub end and the rear sleeve pipe of circular cone anemostat are connected. Visual device includes pedestal and sealing member, has seted up first through -hole on the pedestal, has seted up the second through -hole on the pipe wall of circular cone collapsible tube, and the pedestal is connected with the circular cone collapsible tube, and first through -hole and second through -ho