A nozzle assembly that includes a nozzle mount with a first end having a first opening and a second end having a second opening. The nozzle mount has a bore therein that extends from the first opening to the second opening. A diamond orifice is configured to fit within the bore. The diamond orifice is held in place by a retainer within the bore of the nozzle mount. The diamond orifice has a non-circular opening and is positioned within the bore such that a fluid entering the first end of the nozzle mount exits the second end of the nozzle mount through the non-circular opening of the diamond orifice.

The invention provides a machining system (201) comprising: a machining apparatus (202), notably an abrasive waterjet cutting system (203), said machining apparatus being adapted for machining a workpiece (204); a monitoring device (228) adapted for monitoring machining conditions of the machining apparatus (202) and/or of the workpiece, the monitoring device comprising a plurality of sensors, said plurality of sensors comprising a first sensor (237) at a first location and a second sensor (239) at a second location which is distant from the first location. The plurality of sensors comprises a fourth sensor (243) which is formed by an array of microphones (254) arranged on a grid. The plurality of sensors comprises accelerometers, strain gauges and microphones. The invention also provides a monitoring method of a machining system (201) wherein a specific benchmark signature is chosen from a library.

The invention provides a machining system (201) comprising: a machining apparatus (202), notably an abrasive waterjet cutting system (203), said machining apparatus being adapted for machining a workpiece (204); a monitoring device (228) adapted for monitoring machining conditions of the machining apparatus (202) and/or of the workpiece, the monitoring device comprising a plurality of sensors, said plurality of sensors comprising a first sensor (237) at a first location and a second sensor (239) at a second location which is distant from the first location. The plurality of sensors comprises a fourth sensor (243) which is formed by an array of microphones (254) arranged on a grid. The plurality of sensors comprises accelerometers, strain gauges and microphones. The invention also provides a monitoring method of a machining system (201) wherein a specific benchmark signature is chosen from a library.

A blasting device has a spray unit for spraying blasting agent onto the surface to be treated. The spray unit has an insert 23′ in which a nozzle 13′ is rotatable. This nozzle 13′ is provided with a number of spray channels 19′ which are at an angle 21′ relative to the supply direction 17 of the blasting agent. The blasting agent is pressed through the spray channels 19′ under pressure and exerts a force on the wall of the spray channels 19′ causing the nozzle 13′ to rotate. The jets emerging from the rotating nozzle 13′ will make a rotating movement. The joint area of the cross-sections of the spray channels 19′ is larger than one third of the cross-sectional area of the circular-cylindrical part of the nozzle. The angle 21′ at which the spray channels are located with respect to the supply direction 17 of the blasting agent is greater than zero and less than 10 degrees.

A rotary nozzle having a rotating shaft operating within a cylindrical housing is balanced by allowing passage of a small amount of pressurized fluid to be bled to an area between the outside of the opposite end of the shaft and the inside of the housing where the fluid force acts axially in an opposing direction upon the shaft to balance the axial inlet force exerted by the pressurized fluid. 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. A plurality of centrifugal weight segments around the inlet end of the shaft are thrust outwardly against the cylindrical housing to retard rotational speed while pressurized fluid around the centrifugal weight segments provides a fluid bearing between the weights and the housing.

A saddle seal assembly for a high-pressure airless spray nozzle having a spray tip includes a metal sealing sleeve, a cylindrical elastic seal, and a metal sleeve insert. The metal sealing sleeve may include a first saddle-shaped semi-cylinder surface closely matching with an outer surface of the spray tip to form an outer hard sealing structure. The cylindrical elastic seal may include a second saddle-shaped semi-cylinder surface closely matching with the outer surface of the spray tip to form an inner flexible sealing structure. The metal sleeve includes a hollow cylinder shape that matches the inner surface of the cylindrical elastic seal. A first end portion of the cylindrical elastic seal is configured to be inserted into the metal sealing sleeve, and the first saddle-shaped semi-cylinder surface and the second saddle-shaped semi-cylinder surface are configured to be spliced to form a continuous saddle-shaped semi-cylinder surface, to thereby seal a stepped inlet hole of the high-pressure airless spray nozzle. The metal sleeve insert is attached onto the inner surface of the cylindrical elastic.

A spray nozzle that includes a nozzle body defining a first surface, a cap defining a second surface able to define an annular nozzle opening therebetween, a turbine having a plurality of radially extending fins circumferentially positioned about the nozzle opening for directing the flow of fluid exiting the nozzle opening, and a reverser member including a cup portion positioned below the cap to intercept the flow of fluid from a flow passage of the cap. The reverser member coupled to the turbine such that the reverser member is caused to rotate in response to rotation of the turbine.

A spray nozzle that includes a nozzle body defining a first surface, a cap defining a second surface able to define an annular nozzle opening therebetween, a turbine having a plurality of radially extending fins circumferentially positioned about the nozzle opening for directing the flow of fluid exiting the nozzle opening, and a reverser member including a cup portion positioned below the cap to intercept the flow of fluid from a flow passage of the cap. The reverser member coupled to the turbine such that the reverser member is caused to rotate in response to rotation of the turbine.

An aerosol generating apparatus is disclosed. The apparatus includes a liquid container, an adaptor detachably engaged with the liquid container, and a driving element accommodated by the adaptor. A perforated membrane, through which a liquid can pass through, is disposed at an exit of the liquid container. Moreover, the perforated membrane faces the driving element. The driving element includes a substrate coupled with a piezoelectric element. The substrate includes an aperture that corresponds to the perforated membrane when the liquid container and the adaptor are engaged so as to receive liquid. Moreover, when the liquid container and the adaptor are engaged, the perforated membrane is in contact with the substrate at the proximity of the aperture, which is about the substrate's center. The adaptor is configured to contact the substrate's periphery only. The resulting apparatus generates aerosol at a desired efficiency with less energy needed.

An aerosol generating apparatus is disclosed. The apparatus includes a liquid container, an adaptor detachably engaged with the liquid container, and a driving element accommodated by the adaptor. A perforated membrane, through which a liquid can pass through, is disposed at an exit of the liquid container. Moreover, the perforated membrane faces the driving element. The driving element includes a substrate coupled with a piezoelectric element. The substrate includes an aperture that corresponds to the perforated membrane when the liquid container and the adaptor are engaged so as to receive liquid. Moreover, when the liquid container and the adaptor are engaged, the perforated membrane is in contact with the substrate at the proximity of the aperture, which is about the substrate's center. The adaptor is configured to contact the substrate's periphery only. The resulting apparatus generates aerosol at a desired efficiency with less energy needed.