Vertical roller mill buffering device

The invention relates to a vertical roller mill buffering device which comprises a guide framework part and a buffering cylinder part fixedly connected with the guide framework part through a connection flange, wherein the buffering cylinder part comprises a squeezing head, a large piston, a limiting piston rod, a cylinder bottom, a front cylinder body, a middle plate, a rear cylinder body and a piston; the front cylinder body is sleeved on the large piston; a sealing guide sleeve is arranged at the end of the front cylinder body; the front cylinder body and the rear cylinder body are welded on and connected with the middle plate respectively; a plurality of small throttling holes are formed on the limiting piston rod between the middle plate and the end of the large piston; a hydraulic oil hole is formed on the middle plate; the piston is positioned at the outer side of the middle plate; and the cylinder bottom is fixed outside the piston. Through adoption of the vertical roller mill buffering device adopting the structure, nitrogen is convenient to fill and detect and the work load is reduced.