Grouting sleeve

The utility model aims to provide a grouting sleeve. Wherein the grouting sleeve comprises an outer joint and an inner joint, one end of the outer joint is a first connecting pipe, the other end of the outer joint is a hollow pipe body, one end of the inner joint is a second connecting pipe, the other end of the inner joint is a multi-petal pipe body, the outer joint is used for being matched withthe inner joint, and an inner cavity of the hollow pipe body is used for containing the multi-petal pipe body; the multi-petal pipe body is of a tubular structure defined by a plurality of petal claws, and one end of each petal claw extends towards the direction of the outer joint relative to the second separation part; the multi-petal pipe body stretches into the hollow pipe body, and the supporting piece of the outer connector is inserted into the multi-petal pipe body to open the petal claws of the multi-petal pipe body. The grouting sleeve can greatly improve the connection performance ofprefabricated parts, the