Water jet cleaner for standpipes

Claim 1

High pressure high volume water jet apparatus for cleaning coke oven standpipes, said standpipes having an elbow and an access port and cover plate at said elbow for access to the interior of said standpipe, and sealing surfaces around said port whereby said cover plate may effectively close the same against the escape of gases therefrom, said apparatus comprising; a support member swingable between an upper inoperative position and a lower position in alignment with a said port and having power operated means for swinging the same downwardly and upwardly; a carrier member slideably mounted on said support member and slideably in a telescopic manner relative thereto into and out of a said port, and having power operated means for moving the same; a high pressure water pipe rotatably mounted on said carrier member with an end extending therefrom and power operated means for at least partially rotating the same; at least two jet nozzle means at said end of said water pipe for directing jets of water along axes at a substantial angle to the axis of said water pipe and on opposite sides thereof simultaneously whereby to establish high pressure high volume jets in a divergent manner for striking the interior of said standpipe when introduced into said port and whereby also to clean said sealing surfaces of said port in an oblique manner when located outside said port; high pressure high volume pumping means having inlet and outlet means, tank means for supplying the inlet of said pumping means, conduit means connected to said outlet means for delivering of water to said water pipe, and recycle duct means for recycling water from said outlet to said tank, and valve means for controlling flow either through said conduit or through said recycle duct means, whereby said jets may be turned on or off without affecting the operation of said pump, and, rotatable water supply connection means having a fixed part and a rotatable part, said rotatable part being connected to said water pipe and said fixed part being fastened to said carrier member and said conduit means being connected thereto.