Facility and method for coating the inside of a pipe element

摘要

A facility suitable for coating the inside of a pipe element with a mortar that comprises a transport device (32) for feeding dry matter of the mortar that includes a transport chamber (48) and a transport member (54) for transporting the dry matter arranged in the transport chamber, the transport chamber being provided with a dry matter inlet (50) and a dry matter outlet (52); a mixing and projection device (34) for mixing the dry matter with liquid matter to obtain the mortar having a mixing member (82) and a mixing chamber (74) wherein the mixing chamber has a dry matter inlet (76) fed by the dry matter outlet (52), a liquid matter inlet (78) and a mortar outlet (80).

主权项

1. A facility adapted for coating the inside of a pipe element using a mortar formed with a dry matter and a liquid matter, the facility comprising:
(a) a transport device (32) which is suitable for transporting the dry matter of the mortar, the transport device comprising a transport chamber (48) and a transport member (54), which is arranged in the transport chamber, the transport chamber (48) being provided with a dry matter inlet (50) and a dry matter outlet (52), wherein the transport member transports the dry matter from the dry matter inlet to the dry matter outlet in a transport direction (T); (b) a mixing and projection device (34) suitable for mixing the dry matter with the liquid matter to obtain the mortar, said mixing and projection device comprising:
(i) a case (72) forming a mixing chamber (74) having a dry matter inlet (76), a liquid matter inlet (78) and a mortar outlet (80), wherein the dry matter outlet (52) of the transport device (32) leads into the dry matter inlet (76) of the mixing chamber (74);(ii) a mixing member (82), which is arranged in the mixing chamber (74), that mixes the dry matter and the introduced liquid matter to obtain the mortar and transports mortar to the mortar outlet, wherein the transport member (54) and the mixing member (82) are separate members; and(iii) a projection head (94), comprising a head inlet, in which the mortar outlet (80) emerges, and at least one projection window (98) through which the mortar exits the facility and is projected to the inside of the pipe element; and (c) a device for feeding liquid matter (39) that comprises a first liquid matter introduction device (42) adapted for introducing the liquid matter or a first liquid component of the liquid matter into the dry matter at the liquid matter inlet in a direction that either has a component perpendicular to, or is perpendicular to, the transport direction of the dry matter (T), wherein the first liquid matter introduction device (42) comprises an introduction channel (100) emerging in the mixing chamber (74) at the liquid matter inlet (78) and passing through the case (72).