Shaft sleeve of circulating water pump packing seal cavity

The utility model relates to a shaft sleeve of a circulating water pump packing seal cavity. The shaft sleeve is arranged on a pump case and provided with a shaft, the shaft sleeve is formed by integrally connecting two circular ring bodies, and the outer diameter of the left side circular ring body is larger than the outer diameter of the right side circular ring body. A spacer sleeve is installed between the right side circular ring body of the shaft sleeve and the pump case and formed by integrally connecting two circular ring bodies, and the outer diameter of the right side circular ring body is larger than the outer diameter of the left side circular ring body. Left packing is installed at the position, outside the shaft sleeve, of the right end of the spacer sleeve, and right packing is installed at the position, outside the shaft sleeve, of the right side of the left packing; a packing gland is installed at the right end of the shaft sleeve, a packing seal sleeve is installed between the packing gland and the spacer sleeve, and a packing injecting pipe is arranged at the top of the packing seal sleeve; a left obtuse-angle wedge-shaped ring is arranged at the position, outside the shaft sleeve, of the right side of the left packing, a right obtuse-angle wedge-shaped ring is arranged at the position, on the left side of the right packing, of the shaft sleeve, and at least one isosceles wedge-shaped ring is arranged on the portion, between the left packing and the right packing, of the shaft sleeve. The use of the packing is reduced, the consumption of water resources is reduced, and the service life of the shaft sleeve is prolonged.