WATER-JET OPERATING HEAD FOR CUTTING MATERIALS WITH A HYDRO-ABRASIVE HIGH PRESSURE JET

摘要

A water-jet operating head for cutting materials by a high pressure hydro-abrasive jet includes a main portion which is to be carried by an operating machine movably along one or more axes and a focusing nozzle for ejecting the high pressure hydro-abrasive jet, carried by a support removably connected to the main portion of the head. This support also carries a primary nozzle with an orifice having a predetermined diameter arranged upstream of the focusing nozzle. The high pressure water jet is added with an abrasive agent which is fed through at least one connecting element at a mixing chamber interposed between the primary nozzle and the focusing nozzle. The connecting element is associated to the main portion of the head and the nozzle-carrying support is adapted to be slidably received within a cylindrical cavity of a main support forming part of the main portion of the head.

主权项

1. A water-jet operating head for cutting materials with a hydro-abrasive high pressure jet, including
a head main portion configured to be mounted on an operating machine, the head main portion defining an axial passage for feeding a high pressure water flow, a nozzle-carrying support removably connected to the head main portion, a jet focusing nozzle for emitting a high pressure hydro-abrasive jet mounted within said nozzle-carrying support defining an ejection passage which is arranged downstream of said axial passage and is in communication therewith, a primary nozzle carried by said nozzle-carrying support upstream of the focusing nozzle having a body with an -orifice of predetermined diameter interposed between the axial passage for water flow feeding and the hydro-abrasive jet ejecting passage, and at least one connecting element carried by said head main portion through which an abrasive agent can be fed into the high pressure water flow at a mixing chamber defined within the nozzle-carrying support- between the primary nozzle and the focusing nozzle, said connecting element is carried by said head main portion and therefore remains associated therewith when the nozzle-carrying support is removed from said main portion, the water-jet operating head comprising: a head main portion main support defining a cylindrical cavity and said nozzle-carrying support comprises a body adapted to be slidably and removably received within said cylindrical cavity of said main support; and a head main portion locking element for axially locking the nozzle-carrying support in a coupling position within said main support, said locking element being switchable between an operative condition and an inoperative condition.