A shaping air ring (10) is configured of a body (11), a cover (13) and a nozzle (15). A tapered conical protrusion (17) is provided in a front end of the nozzle (15) to abut on the cover (13) in contact therewith without a clearance therebetween. Numerous inclined recessed grooves (20) are provided on a forward tapered surfaces (17C) of the conical protrusion (17) over the entire periphery. Further, a first shaping air ejecting hole (23) is formed between each of the inclined recessed grooves (20) and an inner peripheral surface (13B2) of the cover (13) to eject shaping air toward a releasing edge (9E) of a rotary atomizing head (9). Second shaping air ejecting holes (24) are provided on an inner peripheral surface (16A) of the nozzle (15) to eject shaping air along an outer peripheral surface (9C) of the rotary atomizing head (9).

An electrostatic coating machine can include an applicator rotatably attached to a distal end of a turbine and shaft, wherein the applicator is a bell cup comprising a resin material, wherein the bell cup comprises an outer peripheral edge and a bell cup exposed surface, wherein the outer peripheral edge comprises a conductive or semi-conductive coating material, and a plurality of semi-conductive members extending through the resin material in electrical communication with a high voltage path and the outer peripheral edge.

PROBLEM TO BE SOLVED: To evolve a spark discharge preventing effect of an electrostatic coating device.

SOLUTION: One coating robot has an arm equipped with a plurality of electrostatic coating devices 100 close to each other and the plurality of the electrostatic coating devices 100 is connected in parallel with each other to one high-voltage generator 102. A hollow rotary shaft 108 driven by an air motor 104 is disposed with nine plate-shaped resistors 120 arranged circumferentially at intervals. The nine plate-shaped resistors 120 are connected in series and a high voltage is applied via the resistors 120 to a rotary atomization head 110. The rotary atomization head 110 is made of a semiconductive resin.

A misting fan includes a fan assembly including fan blades and a first electric motor for driving the fan blades to rotate; a body formed with a frame for supporting the fan assembly; and a nozzle disposed on the fan assembly and/or the body. The body is formed with a first accommodation cavity for water storage, and the first accommodation cavity is disposed around the fan assembly. In a circumferential direction, an angle of the first accommodation cavity around the fan assembly is greater than or equal to 180. The misting fan further includes a pump component for pumping water in the first accommodation cavity to the nozzle.

Systems and methods of electrostatically spraying a treatment solution are disclosed that include electrostatically charging, by a cartridge assembled with a handheld portable electrostatic device, a treatment solution. The handheld portable electrostatic device can include a housing, the cartridge removably disposed in the housing. The cartridge can include a cartridge housing, at least one electrode to electrostatically charge and ionize molecules of the treatment solution of the cartridge, and a nozzle positioned at a distal end of the cartridge housing, the nozzle of the cartridge being configured to deliver the electrostatically charged treatment solution and configured to be in fluid communication with an air supply tube in fluid communication with a pump in the housing.

The disclosure relates to a turbine drive for a rotary atomizer, having a rotatable turbine wheel with a plurality of turbine blades, a first drive nozzle for delivering a drive gas, in particular compressed air, to the turbine blades of the turbine wheel, to drive the turbine wheel, a first drive gas supply for supplying the drive gas to the first drive nozzle, and a second drive nozzle for discharging the drive gas onto the turbine blades of the turbine wheel to drive the turbine wheel. The disclosure additionally provides a second drive gas supply for supplying the drive gas to the second drive nozzle, wherein the second drive gas supply is separate from the first drive gas supply, so that the second drive nozzle can be supplied with the drive gas independently of the first drive nozzle.

A turbine for a fluid-spraying device including a turbine body, and a rotor rotating a bowl relative to the body about an axis, the rotor being surrounded by the turbine body in a plane perpendicular to the common axis, the turbine body guiding the rotation of the rotor, the rotor being rotated by a stream of gas, the turbine body receiving the stream of gas at the outlet of the rotor, and delimiting at least one outlet duct configured to guide a first portion of the received stream into a space delimited in a plane perpendicular to the common axis by the bowl and a skirt.

A locking mechanism for a rotatable shaft can include a locking pin comprising a locking pin shaft side and locking pin spindle side, a compressed air supply port in fluid communication with a compressed air supply, and a spring, wherein the spring is configured to place the locking pin spindle side in direct mechanical communication with the compressed air supply port when the compressed air supply is not activated.

A rotary coating sprayer including a spray bowl rotating about an axis of rotation and an air turbine for driving the bowl. The turbine includes a rotor and a body forming a support for the rotor and defining at least one air feedline for a rotation chamber wherein the rotor blades are arranged. The feedline includes an intermediate chamber defined, radially to the rotation axis, between the body and a ring mounted around the body. In this way, lowering of temperature of an element of the sprayer housing due to flow of exhaust air from the turbine, is limited.

The durability of resin components can be improved by preventing ozone from staying in gaps where there is no air flow. A cylindrical gap is provided around the outer peripheral side of the head portion between the head portion and the resin cover portion covering the outer peripheral side of the head portion. Moreover, the head portion is provided with a pilot air introduction path guiding the pilot air exhausted from the switching valves to the cylindrical gap. In addition, the arm portion is provided with a pilot air exhaust path exhausting the pilot air from the cylindrical gap to the outside.