Connecting structure of central pipe and end cover in spiral-wound membrane element and spiral-wound membrane element

The utility model discloses a connecting structure of a central pipe and an end cover in a spiral-wound membrane element and the spiral-wound membrane element. The connecting structure comprises a first groove body and a second groove body, wherein the first groove body is formed in the outer wall, matched with the end cover, of the central pipe; the second groove body is arranged on the inner wall, matched with the central pipe, of the end cover; the glue injection opening is formed in the end part of the central pipe and/or the end cover; after the outer wall and the inner wall are matched, the first groove body and the second groove body are communicated to form a net-shaped groove communicated with the glue injection opening, and an adhesive injected through the glue injection opening flows into the net-shaped groove and is filled into the net-shaped groove. According to the utility model, the central tube and the end cover are fixed in a matching way similar to a key slot and a key, and the connection st