Safe anti-collision sliding gate nozzle mechanism

The invention discloses a safe anti-collision sliding nozzle mechanism which comprises a support frame, a lower nozzle, a heat insulation mounting plate, a heat insulation sleeve, an annular oil storage shell, a hydraulic oil conduction pipe, a first electromagnetic valve, an upper-layer ring disc, a lower-layer ring disc, a protection cylinder, an extrusion mechanism, a rotation direction detector, a hydraulic motor, a hydraulic reversing pipeline and a control system. The annular oil storage shell is fixedly connected with the heat insulation sleeve, and an outer side annular cavity and an inner side annular cavity are formed in the annular oil storage shell. The protection cylinder is matched with the extrusion mechanism to achieve the buffering effect, hydraulic oil in the cylinder barrel is extruded out through impact force, the buffering effect is achieved, the rotation direction of the protection cylinder after being impacted is detected through the rotation direction detector, and then the flow direct