Discharging valve capable of automatically compensating abrasion part

A discharging valve capable of automatically compensating a wear part comprises a shell and a valve shaft, and a plurality of discharging plates are evenly distributed on the valve shaft. The end part of the unloading plate is connected with a detachable wear-resisting plate; the wear-resisting plate is flexibly connected with the A face of the discharging plate through a rubber strip. A reset plate is arranged on the surface B of the unloading plate; the two ends of the reset plate are fixed to the discharging plate and the wear-resisting plate respectively. The wear-resisting plate and the discharging plate are connected through the rubber strip, the wear-resisting plate and the discharging plate are in flexible connection, the wear-resisting length of the wear-resisting plate is increased, the difficult step of independently replacing the discharging plate after wear is avoided, and only the wear-resisting plate needs to be replaced. The reset plate is used for providing supporting force for the wear-resis