Rotary-cut valve with novel structure

The invention relates to the technical field of valves, and especially relates to a rotary-cut valve with a novel structure. The rotary-cut valve comprises a support, a stepping motor, a transmissionshaft, a rotary valve plate and a fixed valve plate. The output end of the stepping motor is connected with the transmission shaft and can drive the transmission shaft to rotate; the stepping motor isfixed at one end of the support; the fixed valve plate is relatively fixed at the other end of the support, and can move a certain distance away from the support under the action of an external force; a first through hole is formed in the middle of the fixed valve plate; one end of the transmission shaft penetrates through the first through hole and extends into the support; the first through hole is in clearance fit with the transmission shaft; and the rotary valve plate is arranged at the end, away from the support, of the fixed valve plate and fixedly connected with the other end of the transmission shaft. The rota