Spray head sleeve and vibroflotation high-pressure injection grouting spray head

The invention relates to a spray head of a high-pressure injection grouting machine for constructing an impervious curtain siding wall for a foundation basis in the water conservancy project and the constructional project, and provides a spray head for a vibroflotation high-pressure injection grouting spray head. The spray head sleeve is a tapered frame and comprises four steel bars with teeth lines; one ends of the four steel bars are connected to form a tapered part of the tapered frame while the other ends of the four steel bars are uniformly distributed to form the bottom part of the tapered frame; the teeth lines of the steel bars are placed on the outer side of the tapered frame; a round steel ring can be welded at the bottom part of the tapered frame; an inclined face is formed at the bottom part of the tapered frame or on the inner side of the round steel ring; and the tapered frame is provided with a taper angle of 50 to 100 degrees. The spray head sleeve provided by the invention can be welded to th