An apparatus is described which introduces cryogenic particles received from a source of particles, having a first pressure, into a moving transport fluid, having a second pressure, for ultimate delivery to a workpiece or target as particles entrained in a transport fluid flow which seals between the source of particles and the transport fluid flow.

An apparatus is described which introduces cryogenic particles received from a source of particles, having a first pressure, into a moving transport fluid, having a second pressure, for ultimate delivery to a workpiece or target as particles entrained in a transport fluid flow which seals between the source of particles and the transport fluid flow.

Provided is a shot processing apparatus capable of suppressing scattering of projection materials to the outside without causing any deterioration in projection efficiency. The shot processing apparatus comprises: a cabinet; a drum housed in the cabinet and having an opening allowing loading of a workpiece therethrough, wherein the drum is configured to be selectively disposed in one of a workpiece-loading position, a workpiece-processing position and a workpiece-unloading position; a projector for projecting the projection materials into the drum; and a door for selectively opening and closing the opening of the drum, the door being formed with a projection port for the projection materials, the projector being attached to the door so as to project the projection materials from the projection port; wherein the door is configured such that the projection port is disposed just above the opening of the drum when opening the opening of the drum.

An apparatus for outputting a solid material entrained in a fluid, the apparatus comprising a receptacle for receiving the solid material, an input for the fluid, an output for solid material, an auger for transporting the solid material from the receptacle to the output, a motor for driving the auger, wherein the motor comprises one or more cylinders each comprising a piston, a second input connected to the input so as to feed part of the fluid to the cylinders, where a cross section of a piston is at least 700 mm.sup.2 or wherein a drive transforming the reciprocating movement of each piston, relative to the cylinder, to rotation of the auger around the first axis, is configured to rotate the auger at least 20 degrees when a cylinder completes a cycle.

A particulate material blasting apparatus includes a particulate material dosing device, a particulate material storage tank having a base, top and sidewalls adapted to feed particulate material to the dosing device, and a delivery conduit to deliver particular material into a pressurized gas line. The dosing device includes a rotor with a series of scooping pockets mounted along a circumference of the rotor configured to rotate to scoop-up particular material from a particulate material receiving side of the dosing device and deliver it up and around to a delivery side of the dosing device where it falls into the delivery conduit.

A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.

An ice blasting system comprising a hopper to receive bulk ice and a rotary crusher disposed inside the hopper, the rotary crusher having rotary crusher arms that cooperate with anvils to produce crushed ice from the bulk ice. The system includes a rotary feeder mechanism disposed below the hopper, the rotary feeder mechanism having a rotor that includes ice-receiving pockets for receiving the crushed ice. The rotor rotates against an airtight seal block and delivers the crushed ice into a high-pressure airstream passing through the rotary feeder mechanism to thereby entrain the crushed ice into the high-pressure airstream whereby the ice-entrained airstream subsequently exits the ice blasting system through an outlet.

Dry ice container for dry ice cleaning devices comprises the container for dry ice closed by the lid (2) on the upper side, and provided by the opening (3) for drawing out dry ice pellets on the lower side. The container (1) has the bottom (4) sloped towards the opening (3) for drawing out the pellets. The linear-movable member (5) is arranged in the chamber (6) at the bottom (4) of the container (1) transversely to the axis of the container (1). The member (5) has the shape of a gutter in which groups of separated openings (5a, 5b, 5c) are provided, to which at least one pellets plowing element (5d) is placed in the member (5). Each group of openings (5a, 5b, 5c) pertains to one opening (3) for drawing out the pellets.

A polishing device includes a processing vessel into which workpieces are charged, a fluidizing unit that fluidizes the workpieces in the processing vessel, an abrasive-feeding unit that feeds an abrasive into the workpieces, and a suction unit that generates an air flow in a direction in which the abrasive passes through the processing vessel, and recovers the abrasive by suction. The abrasive fed from the abrasive-feeding unit is allowed to pass between the workpieces charged into the processing vessel by the air flow generated from the suction unit while coming into contact with the workpieces. Accordingly, the workpieces are polished.

Device for mixing solid particles of dry ice and the flow of gaseous medium including a feeding element (2) rotatively placed within the fixed housing (1) having openings (12, 13) for the flow of gaseous medium and/or the flow of gaseous medium with solid particles. Between the fixed housing (1) and rotatively placed feeding element (2) the immovable elastic membrane (3) is placed. The fixed housing (1) is at the side of the elastic membrane (3) provided by at least one sealed pressure chamber (14) connected with the opening (13) for the flow of gaseous medium and/or the opening (12) for the flow of gaseous medium with solid particles.