METHOD AND APPARATUS FOR SPRAYING GROUT ONTO THE INTERIOR SURFACE OF A MANHOLE

摘要

A sprayer (22) for applying an uncured grout to the interior surface of an enclosed wall (10) includes a sprayer motor (30) having a rotor (62) rotatably mounted within the motor housing (40). A spray head (32) is attached to the rotor (62) and a spray conduit (86) is adapted to introduce fluid grout under pressure to the spray head (32) so that it will be thrown radially outwardly in a circular pattern. The motor (30) and spray head (32) are inserted into a conduit (10) and actuated to throw the grout outwardly onto the interior walls of the elongated conduit (10).