Rapidly-installed water purifier having double self-locking sealing, and filtration apparatus containing the same

The present invention relates to a rapidly-installed water purifier having double self-locking sealing, and a filtration apparatus containing the rapidly-installed water purifier, and provides a rapidly-installed water purifier having double self-locking sealing, wherein the rapidly-installed water purifier comprises a connection end head (1) provided with a dual self-locking sealing device (3) and a purification filter core assembly (2), the dual self-locking sealing device (3) comprises a valve core (301), a sealing ring (302), a valve seat (303) and an ejection spring (304), the internal of the valve core (301) is dug to a hollow state to form a water collection chamber (305), a through hole (306) is formed on the side wall of the water collection chamber (305), the ejection spring (304) is arranged inside the water collection chamber (305) of the valve core (301), the bottom end of the valve core (301) and the valve seat (303) form a taper match, the seal ring (302) is arranged inside a sealing ring groove (307) on the bottom end cone of the valve core (301), and the dual self-locking sealing device (3) is connected from the internal of the connection end head (1), and is connected and fixed through the valve seat (303) and an end cover shell (101) of the connection end head (1).