The invention discloses a
heat supply wear-resistant
ball valve. The
heat supply wear-resistant
ball valve comprises a valve body, a valve cover, a ball body, an outer valve rod, an inner valve rod, avalve clack
assembly and a second valve clack
assembly, wherein the outer valve rod is fixedly connected with the ball body, the inner valve rod is in transmission connection with the first valve clack
assembly and the second valve clack assembly, the outer surfaces of the first valve clack and the second valve clack are spherical surfaces, the
diameter of the spherical surfaces is the same as the
diameter of the outer surface of the ball body, and when the first valve clack and the second valve clack are in a completely
closed state, the first valve clack and the second valve clack form a smooth spherical surface with the outer surface of the ball body, and when the first valve clack and the second valve clack are retracted into an inner cavity of the ball body, the fluid flow can be adjusted. According to the
heat supply wear-resistant
ball valve, when the two valve clacks are in a
closed state, the outer surfaces of the valve clacks coincide with the outer surface of the ball body,so that a smooth curved surface is formed, edges and corners existing at a through hole of the ball body are eliminated, the ball body is prevented from scraping a
valve seat sealing ring in the rotating process, the abrasion of the
valve seat sealing ring is reduced, in the moving process of the valve clacks, the gap between the inner
cavity wall of the ball body and the valve clacks is gradually increased, and fine adjustment of the valve flow is realized.