C-shaped four-eccentric slurry pump control valve

The invention relates to a C-shaped four-eccentric slurry pump control valve. The control valve comprises a valve body, a valve seat, a valve element, a valve shaft, a valve shaft and an oil cylinder; the valve body consists of a left valve body and a right valve body; the valve element has a C-shaped hemisphere structure; the pipeline diameter of the C-shaped hemisphere is the same as the diameter of an inlet and outlet pipeline; a valve clack matched with the valve seat is fixedly installed on the outer spherical surface of the C-shaped hemisphere; the valve clack is provided with a cone sealing surface; the valve shaft and the valve clack sealing surface, the valve shaft and a valve clack central line, and a valve clack sealing surface central line and a valve body passage central line form a three-eccentric structure; a valve shaft central line and the valve body passage central line are eccentrically installed; a piston rod of the oil cylinder is fixedly connected with the end of the valve shaft through a connecting lever; the end of the valve shaft is fixedly connected with a heavy hammer; and the heavy hammer is in a horizontal state when the valve element is opened. The C-shaped four-eccentric slurry pump control valve has the advantages of erosion resistance, leakproofness, reliability, long service life, small flow resistance, simplicity in pipeline cleaning, high operation efficiency, low operation noise and small closed water hammer, and is applicable to a protection valve for avoiding backflow of media on an outlet pipeline of a water pump.