Water supply and drainage pipe connecting device

The utility model discloses a water supply and drainage pipe connecting device in the related technical field of drainage pipes. Pipe body, a sliding groove is formed in the pipe body. Second sealinggaskets are arranged on the inner walls of the chutes; the pipe body is connected with a threaded rod; screw cap of threaded rod, movable ring of threaded rod, grooves are formed in the inner walls ofthe movable rings; spring arranged at bottom of groove, trapezoidal sliding block of spring, a left water pipe and a right water pipe are arranged on left and right sides of the pipe body; clamping grooves are formed in the right end of the left water pipe and the right water pipe; the clamping groove is in sliding connection with the trapezoidal sliding block; the left water pipe and the right water pipe are pushed to be in contact with the inclined plate of the trapezoidal sliding block; the trapezoidal sliding block is pushed to slide into the groove; the clamping grooves of the left waterpipe and the right water p