The purpose of the present invention is to provide a shot processing device and a projector such that the projection amount of a projection material can be minimized. The present invention provides a shot processing device equipped with a centrifugal projector for projecting a projection material onto a workpiece and a support mechanism for supporting the workpiece at a processing position where surface processing by the projector can be carried out, wherein the projector is equipped with: a cylindrical control cage which the projection material is supplied into and which has an opening formed on a side wall as a projection material discharge port; and an impeller that has a plurality of blades, which are arranged outside of the control cage and extend outward in the radial direction of the control cage, and rotates about the central axis of the control cage, wherein each blade has, disposed on a front-side surface in the rotation direction, a rearward inclined section inclining toward the rear-side in the rotation direction.

A computerized method and apparatus for high pressure grit or sand blasting comprises an upright cabinet through which work pieces, supported by a roller conveyor, can be disposed for blasting. An elongated actuator assembly horizontally extending across the enclosure interior comprises a pair of rigid, spaced-apart, rails upon which a displaceable carriage can move. The carriage supports a sand blasting head and nozzle. An internal tape within the actuator assembly moves the carriage. Tape condition is monitored by software in response to a magnetic sender driven by the tape idler pulley and an adjacent Hall effect sensor that picks up timed pulses. The actuator assembly is braced by buffer wheel assemblies at each end, in contact with vertical guide rails at each cabinet interior end. The hose-fed sand blasting head secured to the carriage directs sand or towards a target work piece be processed. The actuator assembly is vertically displaceable via cables controlled by an overhead servo motor, so that the sand blasting nozzle may be displaced in both horizontal and vertical. A programmable logic controller, armed with suitable software, provides operator menus for initiating various steps used in setup options, executing blast functions, moving the carriage blasting.

An apparatus and method of preparing and coating a large structure such as a ship's hull while in a dry dock wherein a plurality of spray guns disposed in an array are positioned by a robotic arm in a spaced relationship along the surface to be treated so that their spray patterns overlap. The array of spray guns is traversed downwardly and thus painting a strip whereupon the spray guns are secured, move horizontally and then are activated to be moved upwardly until another strip adjacent to and overlapping the first strip is painted. These steps are repeated until the surface area is substantially entirely painted. A shroud is provided for collecting paint oversprays and other excess paint is mounted in the array assemblage. An auxiliary spray gun may be positioned and its spray pattern adjusted to apply paint to area which were missed by the original spray pattern emanating from the array of spray guns. Travel of the system along the work surface is accomplished by a reference track, which may be virtual or actual along which an unmanned platform travels. An articulated computer controlled arm is carried by the unmanned platform which in turn carries the assemblage. Other tools may be selectively operatively connected to the arm for cleaning the hull before a coating is applied thereto.

A containment system (1) for providing a substantially dust-tight working space (100) surrounding a work area (101), comprising: a flexible enclosure (2) adapted to be assembled around the work area and provided with an outlet opening (3); a suction hose (4) connected with the outlet opening of the flexible enclosure; a vacuum device (5) connected with the suction hose to draw air from within the flexible enclosure; and an air inlet device (6) adapted to introduce air into the flexible enclosure; wherein the flexible enclosure in an assembled state comprises a main body section (21) defining the substantially dust-tight working space, the main body section having a lower funnel-shaped section (22) extending downwards and terminating in the outlet opening, and wherein the flexible enclosure is composed by one or more flexible sheets (23) having a plurality of edges adapted to be assembled to provide the main body section.

An enclosed booth is provided with a low pressure, high volume air pump that outputs a stream of air for sandblast cleaning. A venturi nozzle having a venturi restriction at the end is positioned at the distal end of a first flexible tube. A second flexible tube has an outlet positioned adjacent to the venturi restriction which therefore creates a vacuum to pull sand media from the reservoir into the airflow and eject it out of the outlet nozzle of the first hose. This provides a low pressure stream of sandblast media for cleaning various parts. A reservoir is positioned at the bottom of the booth which is filled with the sandblast media. After the sandblasting media is output from the outlet nozzle, it falls through a substrate having apertures therein and enters the reservoir again.

An apparatus and method of preparing and coating a large structure such as a ship's hull while in a dry dock wherein a plurality of spray guns disposed in an array are positioned by a robotic arm in a spaced relationship along the surface to be treated so that their spray patterns overlap. The array of spray guns is traversed downwardly and thus painting a strip whereupon the spray guns are secured, move horizontally and then are activated to be moved upwardly until another strip adjacent to and overlapping the first strip is painted. These steps are repeated until the surface area is substantially entirely painted. A shroud is provided for collecting paint oversprays and other excess paint is mounted in the array assemblage. An auxiliary spray gun may be positioned and its spray pattern adjusted to apply paint to area which were missed by the original spray pattern emanating from the array of spray guns. Travel of the system along the work surface is accomplished by a reference track, which may be virtual or actual along which an unmanned platform travels. An articulated computer controlled arm is carried by the unmanned platform which in turn carries the assemblage. Other tools may be selectively operatively connected to the arm for cleaning the hull before a coating is applied thereto.

A system for the polishing treatment of inner walls of aquatic enclosures includes at least one tank of abrasive mixture and at least one surface treatment head which communicates fluidically with the tank of abrasive mixture, a mover allowing the treatment head to be moved along the wall to be treated, and a supply allowing the treatment head to be supplied with a substantially continuous flow of abrasive mixture.

The invention relates to removal from the working area of a dust and gas mixture produced by action of a processing tool on the material being processed. The present dust and gas valve is intended to be mounted in an apparatus for processing materials. The dust and gas valve comprises a casing adapted to accommodate a processing tool and to be connected to a system for aspirating the produced dust and gas mixture, and means for directing the dust and gas mixture into the casing. According to the invention said means comprises: a unit for directional supply of compressed air to the working area, and a dust and gas mixture flow guiding element having a lower surface disposed around the working area and streamlined for the dust and gas mixture flow.

Provided is a shot-blasting apparatus which is capable of efficiently perform dust collection and ventilation of an inside of a projection chamber, even using a dust collector having a small-size and low-cost suction device. The shot-blasting apparatus comprises: a cabinet (10); a plurality of process chambers (13a, 13b) provided inside the cabinet in such a manner that each of the process chambers is capable of housing a workpiece therein and selectively movable between a carry-in-and-out position and a projection position; an air inlet port (19) for introducing external air into each of the process chambers therethrough; and an air outlet port provided at a position opposed to the air inlet port across the process chamber set at the projection position, and linearly communicated with an internal space of the process chamber set at the projection position, wherein, according to suction from the air outlet port, air is caused to flow from the air inlet port into the process chamber set at the projection position, and led to the air outlet port while passing through the process chamber set at the projection position.

The recycling unit is the technology for the continuously controlled process of recycling and drying screened abrasive during which the intensity of batching of the abrasive is regulated according to the temperature in the drying oven. The control system continuously measures the current temperature and on the basis of this data it decides on switching the heating elements on or off or turning the batching process on or off; this control is based on the temperature hysteresis and on changing the intensity of batching of abrasive, which is subject to switching the heating elements or turning the batching process on or off.