Patent ID: 8002204
Filing Date: 2011-08-23
Classification: C10B,Y10T

Abstract:
1. A tool for cutting up coke, comprising a housing mounted on a rotatably driven drill stem in an operating condition, at least one cutting nozzle for cutting coke and at least one boring nozzle for boring coke in a coke drum by means of a water jet, a supply channel in the housing for supplying water flowing under high pressure through the drill stem into the housing, a valve for diverting the water being supplied through the supply channel to flow channels connected with the cutting nozzle and boring nozzle, a control apparatus being rotatable about a central longitudinal axis of the housing for controlling the valve, wherein depending on an angular position of the control apparatus a flow path of the water to the boring nozzle or a flow path to the cutting nozzle is free or obstructed, a switching apparatus for switching the tool from a cutting function to a boring function and vice versa by means of the control apparatus, and a driving apparatus for operating the switching apparatus, wherein the driving apparatus is automatically operable by a pressure storage apparatus dependent on changes of the water pressure, the changes of the water pressure being caused by reducing the water pressure from an operating pressure to a switching pressure and by raising the water pressure from the switching pressure back to the operating pressure, wherein the switching apparatus is arranged in the water flow from the supply channel and comprises a switching element for rotating the control apparatus by a desired angle, which is linearly moveable transverse to the central longitudinal axis of the housing from an inactive position to an active position by the driving apparatus when the water pressure reaches switching pressure and returnable from the active position to the inactive position when the water pressure is raised above the switching pressure, wherein the switching element is coupled with a converting apparatus for converting the linear movement of the switching element into a rotational movement of the control apparatus when the switching element engages a control member of the control apparatus for rotating the control apparatus.