Pipeline switching device

The utility model discloses a pipeline switching device, which relates to the technical field of pipeline transmission and comprises a hollow circular truncated cone which comprises a top plate, a bottom plate and a bent side plate. The top plate is connected with a first circular pipe communicated to the interior of the circular truncated cone, the bottom plate is communicated with a plurality ofsecond circular pipes communicated to the interior of the circular truncated cone, and the circular pipes are distributed around the axis of the circular truncated cone at equal intervals; the firstcircular pipe is communicated with a first conveying pipe, and the second circular pipe is communicated with a second conveying pipe; a baffle plate is also arranged in the circular truncated cone; the baffles are parallel and attached to the bottom plate. A stepping motor is fixed to the outer portion of the circular truncated cone, an output shaft of the stepping motor perpendicularly penetratesthrough the bottom plate a