Quick pipeline joint

The utility model relates to a quick pipeline joint which comprises an inner joint, a compressed outer sleeve and a support ring, wherein, the support ring is arranged on the front end of the inner joint, thread teeth are respectively arranged in three notches of the support ring, threads are arranged on the inner walls of the thread teeth, the lower ends of the thread teeth are provided with tail wings, lug bosses corresponding to the outer walls of the thread teeth are arranged on the inner wall of the compressed outer sleeve, and springs corresponding to the tail wings of the thread teeth are also arranged in the joint. As inner threads which are arranged on the outer sleeve are arranged as the thread teeth which can be moved along the radial direction, when the thread joints of connected pipelines are directly put in an inner hole of the compressed outer sleeve and reach proper place, the compressed outer sleeve is slightly rotated, the thread teeth are driven by the lug bosses which are arranged in the outer sleeve to move towards a shaft center and match with the thread joints, and the connection is realized. When the reversal operation is carried out, the thread teeth are driven by the tail wings which are driven by spring sheets which are arranged in the joint to move away from the shaft center, and the connected pipelines can directly enter or back out, so that the fast connection of the pipelines is realized. The utility model is suitable for the quick connection of fire fighting pipelines, and can also be used for the pipeline connection of the industries of oil field, agriculture irrigation, etc.