Patent ID: 7682107
Filing Date: 2010-03-23
Classification: E21F

Abstract:
1. A remote mine seal spray nozzle assembly, comprising: (a) a nozzle body comprising an outer casing end and an opposed, spray end, an inner conduit, and at least one outer conduit extending between the outer casing end and the spray end, the spray end comprising a multi-port manifold seat in fluid communication with the conduits; and (b) a nozzle received in the multi-port manifold seat and defining an interior mixing chamber, the nozzle comprising a grout inlet in fluid communication with the inner conduit through the multi-port manifold seat, a downstream spray outlet opposite the grout inlet, and at least one charging pressure port therebetween, the charging pressure port being in fluid communication with the at least one outer conduit through the multi-port manifold seat, wherein the interior mixing chamber is defined within the nozzle between the grout inlet and the downstream spray outlet.