A re-circulatory blasting device obtained is capable of performing stable treatment for a prolonged period of time even in cases in which an elastic abrasive employed has abrasive grains adhered to the surface of elastic cores. An elastic abrasive regeneration device provided to the blasting device regenerates elastic abrasive employed for re-circulation. The elastic abrasive regeneration device includes a mixer and a combining unit. Recovered abrasive fed in from an abrasive recovery section is mixed in the mixer with abrasive grains fed in from an abrasive grain feeder, and the abrasive grains are adhered to the surface of the cores of the recovered abrasive. In the combining unit, the abrasive grains are pressed against and combined to the surface of the cores by passing an aggregated state of the recovered abrasive mixed by the mixer along a constricted flow path having a flow path cross-sectional area that gradually narrows.

A shot treatment apparatus and a shot treatment method applicable to the mass production of a wide range of products. A shot treatment apparatus, comprising: a spinning table which has a first rotary shaft and which holds and rotates a workpiece; an ejection apparatus that ejects a shot media from a nozzle to the workpiece; a cabinet having a treatment chamber formed therein; and a control apparatus comprising a first control unit that controls the ejection apparatus, the nozzle being held so as to be positionable and three-dimensionally swingable with respect to the workpiece.

An engine valve cleaning system is disclosed. The system includes a first tube configured to deliver pressurized air, a second tube configured couple to an abrasive media source and draw an abrasive media therefrom, and a spray applicator. The spray applicator includes a first passageway coupled to the first tube and configured to deliver pressurized air, and a second passageway coupled to the second tube and configured to deliver the abrasive media. The first passageway intersects the second passageway such that a passing of the pressurized air past the second passageway draws the abrasive media from the abrasive media source without the necessary for an external vacuum. A third passageway is downstream of the first and second passageways and configured to output the pressurized air and abrasive media to an engine.

An engine valve cleaning system is disclosed. The system includes a first tube configured to deliver pressurized air, a second tube configured couple to an abrasive media source and draw an abrasive media therefrom, and a spray applicator. The spray applicator includes a first passageway coupled to the first tube and configured to deliver pressurized air, and a second passageway coupled to the second tube and configured to deliver the abrasive media. The first passageway intersects the second passageway such that a passing of the pressurized air past the second passageway draws the abrasive media from the abrasive media source without the necessary for an external vacuum. A third passageway is downstream of the first and second passageways and configured to output the pressurized air and abrasive media to an engine.

An engine valve cleaning system is disclosed. The system includes a first tube configured to deliver pressurized air, a second tube configured couple to an abrasive media source and draw an abrasive media therefrom, and a spray applicator. The spray applicator includes a first passageway coupled to the first tube and configured to deliver pressurized air, and a second passageway coupled to the second tube and configured to deliver the abrasive media. The first passageway intersects the second passageway such that a passing of the pressurized air past the second passageway draws the abrasive media from the abrasive media source without the necessary for an external vacuum. A third passageway is downstream of the first and second passageways and configured to output the pressurized air and abrasive media to an engine.

An engine valve cleaning system is disclosed. The system includes a first tube configured to deliver pressurized air, a second tube configured couple to an abrasive media source and draw an abrasive media therefrom, and a spray applicator. The spray applicator includes a first passageway coupled to the first tube and configured to deliver pressurized air, and a second passageway coupled to the second tube and configured to deliver the abrasive media. The first passageway intersects the second passageway such that a passing of the pressurized air past the second passageway draws the abrasive media from the abrasive media source without the necessary for an external vacuum. A third passageway is downstream of the first and second passageways and configured to output the pressurized air and abrasive media to an engine.

The invention relates to implement the sealing, porosity and sweeping functions, combined. For this purpose, the present invention proposes to confine the waste and to suction the waste at the ejection head by means of a sufficiently flexible connection, such as to remain in contact with the machining area. According to an embodiment, a portable machining machine (1) operated by a pressurized jet (112) includes a waste recovery system (5), an injection head (11) which is provided with a nozzle (111) having an axis (A1) that is substantially perpendicular to the surface to be machined (4a) and which is driven by a digitally controlled two-axle guide system, the ejection head (11) being extended by an enclosure (12) to the surface area to be machined (4a). In addition, the enclosure (12) comprises a tubular portion (121) consisting of two walls (12a, 12b) which slide coaxially along the axis (A1) and a double-pivot articulation device (123). The enclosure (12) has a porous annular wall (124) in a plane substantially perpendicular to the axis (A1) of the nozzle (111), said annular wall (124) having sufficient resilience to keep the enclosure (12) in permanent sealing contact with the surface to be machined (4; 4a, 4b).

An ice blasting machine comprising a crusher for crushing water ice; and a crusher-activation mechanism to activate or deactivate the crusher, wherein the crusher is activated to operate in water ice mode and wherein the crusher is deactivated to operate in dry ice mode. An ice-blasting method including activating a crusher to crush water ice when operating in water ice mode and deactivating the crusher when operating in dry ice mode.

An abrasive suspension jet cutting system, the system includes a cutting head. The cutting head has a feed assembly, nozzle and acceleration cavity therebetween. The feed assembly has a slurry orifice and a shielding fluid orifice. Within the acceleration cavity abrasive slurry and shielding fluid are accelerated together from the slurry orifice to the nozzle while maintaining a shielding fluid barrier substantially unmixed with the abrasive slurry around the abrasive slurry. The cutting head is further configured to have both the slurry and shielding fluid pass substantially unmixed through the nozzle thereby limiting nozzle wear. A wear control system is provided to reduce wear of the nozzle and other system components during start and stop. The system may further include a reclamation system that collects and reclaims used abrasive particles and fluid and returns them back to the cutting head to be reused thereby reducing system operational costs.

An abrasive suspension jet cutting system, the system includes a cutting head. The cutting head has a feed assembly, nozzle and acceleration cavity therebetween. The feed assembly has a slurry orifice and a shielding fluid orifice. Within the acceleration cavity abrasive slurry and shielding fluid are accelerated together from the slurry orifice to the nozzle while maintaining a shielding fluid barrier substantially unmixed with the abrasive slurry around the abrasive slurry. The cutting head is further configured to have both the slurry and shielding fluid pass substantially unmixed through the nozzle thereby limiting nozzle wear. A wear control system is provided to reduce wear of the nozzle and other system components during start and stop. The system may further include a reclamation system that collects and reclaims used abrasive particles and fluid and returns them back to the cutting head to be reused thereby reducing system operational costs.