Abstract:
A high pressure nozzle manipulator includes a wheeled chassis, a pair of parallel manipulator elevator rails supported by an elevator rail rotator fastened to the chassis, a horizontal extensible arm rail disposed between and carried by the manipulator elevator rails, a rotary actuator fastened to a distal end of the horizontal extensible arm rail, and a linear actuator fastened between the first rotary actuator and a hinged nozzle support bracket. This bracket holds a high pressure cleaning nozzle. The linear actuator is configured to rotate the nozzle and the bracket through an arc. The elevator rail rotator is configured to rotate the elevator rails through an arc of about 180 degrees about a horizontal axis. The rotary wrist actuator is configured to rotate the hinged nozzle support bracket about a horizontal axis through the extensible arm rail.
Abstract:
A high pressure nozzle manipulator includes a wheeled chassis, a pair of parallel manipulator elevator rails supported by an elevator rail rotator fastened to the chassis, a horizontal extensible arm rail disposed between and carried by the manipulator elevator rails, a rotary actuator fastened to a distal end of the horizontal extensible arm rail, and a linear actuator fastened between the first rotary actuator and a hinged nozzle support bracket. This bracket holds a high pressure cleaning nozzle. The linear actuator is configured to rotate the nozzle and the bracket through an arc. The elevator rail rotator is configured to rotate the elevator rails through an arc of about 180 degrees about a horizontal axis. The rotary wrist actuator is configured to rotate the hinged nozzle support bracket about a horizontal axis through the extensible arm rail.
Abstract:
A nozzle assembly comprises a hollow nozzle body having a central bore and a plurality of ports extending through the body from the central bore; and a switching valve cartridge disposed in the central bore that directs fluid flow to ports upon application of fluid flow above a predetermined threshold to the inlet and direct fluid flow to different ports upon fluid flow having subsequently dropped below the predetermined threshold and then exceeding the predetermined threshold. The cartridge comprises a cylindrical cartridge case having a front portion and a cup shaped rear portion, a cylindrical poppet slidably disposed within the cup shaped rear portion of the cartridge case, and a biasing member within the cartridge case between the front portion of the case and the poppet urging the poppet away from the front portion of the cartridge case.
Abstract:
A system and method for propelling a hose, including: a system housing and a tractor element disposed in the housing. The tractor element includes: a tractor housing with a through-bore; and a protrusion extending into the through-bore. The system includes: a hose assembly including a substantially helical coil disposed about a hose; and an actuator for rotating the tractor housing with respect to the system housing. The tractor element is fixed in the system housing with respect to axial movement; and the hose assembly can be disposed in the through-bore so that the protrusion contacts a portion of the coil. As the tractor housing is rotated in a rotational direction: the protrusion exerts a displacement force on the coil; and the hose assembly reacts to the displacement force by displacing in an axial direction.
Abstract:
A system for storing, rotating and feeding a high pressure hose. A first portion of the hose is disposable about the drum and a guide arm engages a second portion of the hose. An actuator assembly rotates a cage and the guide arm so that the guide arm rotates relative to the cage such that the hose is rotated. Relative rotation in one direction causes the first portion of the hose to uncoil from the drum and displace along the guide arm and causes a third portion of the high pressure hose in an output port to displace out of the output port away from the guide arm. Relative rotation in an opposite direction causes the second portion of the high pressure hose to coil about the drum and causes the third portion of the high pressure hose to displace into the housing.
Abstract:
A high pressure rotary nozzle having a rotating shaft operating within a fixed housing wherein the of axial force which acts upon the shaft due to the fluid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized fluid to be bled to an area or chamber between the outside of the opposite end of the shaft and the inside of the housing where the fluid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the fluid through a tapered or frusto-conical region between the shaft and housing. This further provides a fluid bearing between the two surfaces and allows use of interchangeable rotating jet heads having jet orifices which can be oriented in virtually any desirable configuration including axially forward of the nozzle.
Abstract:
An apparatus for insertion in an enclosed space, including: a tube with: first and second substantially straight portions including first and second ends of the tube, respectively; and a curved portion connecting the first and second portions. The apparatus includes: a plurality of nested segments at least partially disposed within the first substantially straight portion of the tube and connected to the first substantially straight portion; and a first actuator engageable with the tube to displace the first and second substantially straight portions of the tube into and out of the enclosed space through an opening into the enclosed space. The tube is arranged to accept a hose passing through the tube, and a distal segment from the plurality of nested segments is connectable to the hose.
Abstract:
A multiple nozzle swivel assembly for mounting on a cable support stretched across the interior of a chamber to be scrubbed with high velocity jet streams or stretched along an array of objects to be cleaned as the swivel assembly traverses the cable from one end to the other. The cable passes through a coaxial bore in an elongated shaft carrying both a relatively stationary an input member for supply of high pressure liquid to the assembly and a rotatable output nozzle-carrying spray head member. The shaft is monolithic with multiple angularly spaced bores around the central bore and parallel thereto and sealed from the central bore carry high pressure liquid from the input member to the output spray head member with very low drag bearings and liquid seals being provided between relatively rotating liquid carrying components. The assembly includes multi-directioned nozzle elements on a rotatable spray head. Positive drive to rotate the spray head is achieved with a rotational speed controlling motor. With the aid of low drag forces at bearings and rotating liquid seals, the spray head may be self rotated by reaction forces of jet streams from the head. The assembly may be pulled along the cable by an auxiliary device or it may be self-propelled along the cable by reaction of jet streams. For pulling the assembly along the cable a swivelled pulling bail is attached to the shaft.