The invention relates to a spray unit comprising an axle (10), a disc (20), a liquid applicator (40) and a spray direction assembly (50). The disc is configured to spin about the axle centred on the centre of the disc. The liquid applicator is configured to apply liquid to a surface of the disc. The spray direction assembly partially surrounds the disc. The inner surface of the spray direction assembly is configured to modify the trajectory of all liquid that leaves the outer edge of the disc.

A material spreader assembly for the broadcast spreading of particulate material from the trailer hitch of a vehicle. A hopper for storing the particulate material is supported by a frame having a trailer hitch coupler for connection to the vehicle. A spreader including a spinner driven by an electric motor receives and disperses the particulate material. A control circuit receives electric current from the vehicle via a plug interface and a wiring harness and controls the operation of the spreader. A remote communicates user commands to the control circuit. The control circuit includes a motor control processor that controls a motor power relay and a motor driver to gradually ramp up the current supplied to the spreader for start up the spreader while preventing a high transient current draw spike. Component feedback sensors enable the motor control processor to provide an emergency shut off feature and warning signals.

A device for painting a compressor or vacuum pump housing including a first semi-cylindrical structure adjoined to a second semi-cylindrical structure, a dispersing head including a rotating part having a bell shaped structure and a stationary part; a paint reservoir connected to the stationary part through a conduit; a supporting structure including fixing means. The device further includes a controller for controlling a rotational speed of the rotating part. The controller is provided with means for controlling a rotational direction of the rotating part in a clockwise direction for painting the first semi-cylindrical structure of the compressor or vacuum pump housing and for changing the rotational direction to a counterclockwise direction for painting the second semi-cylindrical structure of the compressor or vacuum pump housing.

A spreader for spreading a material including at least one pair of rotating discs having a plurality of generally radially oriented blades attached thereon for disbursing the material in a pre-selected pattern. The discs are rotatably positioned below an end of a funnel unit to receive material passing through the funnel units. The material, as it passes through the funnel units, is directed to a predetermined impact region on each of the rotating discs by a corresponding pair of deflecting vanes integrally fit and movably attached within each funnel of the pair of funnel units. Each deflecting vane is selectably movable by a corresponding actuator from a first position to a second position while the spreader is operating.

An electrostatic coating handgun sprays electrically charged atomized paint onto an object to be coated. The electrostatic coating handgun includes: a rotating head; a motor that applies rotational power to the rotating head; a high voltage generator that applies a voltage to the paint; a housing supporting the rotating head with a tip end of the rotating head being exposed, and housing the motor and the high voltage generator; and a grip portion to be held by an operator. When a current value discharged from the rotating head increases due to movement of the rotating head caused by an operation by the operator, a voltage control device reduces an output voltage of the high voltage generator and a motor control device reduces a rotational speed of the motor.

A centrifugal atomization structure and a spraying device with the same are provided. The centrifugal atomization structure comprises: a centrifugal atomization disc that is provided with a plurality of flow guide grooves, and each flow guide groove extends from the central position to the edge of the centrifugal atomization disc; an annular body is arranged at the outer side of the centrifugal atomization disc, a plurality of teeth are arranged at intervals along the circumferential direction of the annular body, and the teeth are radially arranged outwards; the annular body and the centrifugal atomization disc are coaxially arranged, and a space is arranged between the annular body and the centrifugal atomization disc in the radial direction; and the center of the centrifugal atomization disc is in transmission connection with an output shaft of a motor to form a spraying device.

A spreader for spreading a material including at least one pair of rotating discs having a plurality of generally radially oriented blades attached thereon for disbursing the material in a pre-selected pattern. The discs are rotatably positioned below an end of a funnel unit to receive material passing through the funnel units. The material, as it passes through the funnel units, is directed to a predetermined impact region on each of the rotating discs by a corresponding pair of deflecting vanes integrally fit and movably attached within each funnel of the pair of funnel units. Each deflecting vane is selectably movable by a corresponding actuator from a first position to a second position while the spreader is operating.

Present disclosure provides a substrate processing apparatus, including a rotatable pedestal configured to hold a substrate, a driving mechanism connected to the rotatable pedestal, a liquid pouring nozzle over the pedestal, a temperature sensor configured to probe a temperature of the substrate processing apparatus, and a controller communicating with the temperature sensor and the driving mechanism. Present disclosure also provides a method for processing a substrate, including providing a substrate on a pedestal of a processing chamber, probing a temperature of the processing chamber, calculating a temperature difference between the temperature of the processing chamber and a predetermined temperature, and determining a rotational speed difference with respect to a predetermined rotational speed of the pedestal according to the temperature difference.

A spreader for spreading a material including at least one pair of rotating discs having a plurality of generally radially oriented blades attached thereon for disbursing the material in a pre-selected pattern. The discs are rotatably positioned below an end of a funnel unit to receive material passing through the funnel units. The material, as it passes through the funnel units, is directed to a predetermined impact region on each of the rotating discs by a corresponding pair of deflecting vanes integrally fit and movably attached within each funnel of the pair of funnel units. Each deflecting vane is selectably movable by a corresponding actuator from a first position to a second position while the spreader is operating.

The invention provides apparatus for spray coating of substrates using a rotary bell cup atomizer equipped with an air-driven main turbine and a supply of pressurized primary shaping air conveyed through primary shaping air channels and nozzles for controlling the shape of the atomized spray pattern exiting the bell cup edge, the apparatus further including an auxiliary, independently air-driven turbine equipped with a rotatable vortex generator, and including a separate air supply of secondary shaping air for supplying secondary shaping air through secondary air channels and nozzles to further control the shape of the atomized spray pattern exiting the bell cup, which secondary shaping air, on passing through the vortex generator, produces a curtain of shaping air in a vortex-like pattern, which, in conjunction with and mixing with the primary shaping air from the primary air nozzles, produces improved pattern control, transfer efficiency and quality of coating on the substrate.