A spray system for spraying a fluid, the spray system including a tank for holding the fluid; and a sprayer including a fluid conductor, a fluid mover, at least one first nozzle and a second nozzle, the fluid conductor including an inner diameter, a first end configured to be connected to the tank, a second end configured to be selectively connected to one of the at least one first nozzle and a second nozzle, wherein the second nozzle including a through opening at least about the same size as the inner diameter, wherein the fluid mover is configured to draw the fluid from the tank through one of the at least one first nozzle to create a spray of the fluid and the second nozzle to return at least a portion of the fluid to a storage tank.

The invention relates to a method for controlling an electrostatic atomizer for liquids, the atomizer comprising a liquid tank and a delivery device for liquid from the liquid tank, a high-voltage source and also at least one atomizer nozzle for the atomization of liquid, the at least one atomizer nozzle being connected to the high-voltage source. Here, the voltage and/or the current intensity at at least one of the atomizer nozzles are detected by sensors of control electronics and/or the voltage and/or the current intensity at the high-voltage source are detected by sensors of the control electronics.

The invention relates to a method for controlling an electrostatic atomizer for liquids, the atomizer comprising a liquid tank and a delivery device for liquid from the liquid tank, a high-voltage source and also at least one atomizer nozzle for the atomization of liquid, the at least one atomizer nozzle being connected to the high-voltage source. Here, the voltage and/or the current intensity at at least one of the atomizer nozzles are detected by sensors of control electronics and/or the voltage and/or the current intensity at the high-voltage source are detected by sensors of the control electronics.

A liquid spraying structure with a magnetization device includes: a body having a through hole and a magnetic member accommodating portion around the through hole, the magnetic member accommodating portion having at least two magnetic member accommodating grooves; a plurality of magnetic members disposed in the at least two magnetic member accommodating grooves; a pump unit penetrating through the through hole and being used to draw liquid out of a bottle; and a spray head connected to one end of the pump unit, and the pump unit is used to transport the liquid in the bottle to the spray head.

A liquid spraying structure with a magnetization device includes: a body having a through hole and a magnetic member accommodating portion around the through hole, the magnetic member accommodating portion having at least two magnetic member accommodating grooves; a plurality of magnetic members disposed in the at least two magnetic member accommodating grooves; a pump unit penetrating through the through hole and being used to draw liquid out of a bottle; and a spray head connected to one end of the pump unit, and the pump unit is used to transport the liquid in the bottle to the spray head.

Disclosed is a coaxial control dual nozzle, which includes an inner nozzle body having an injection port through which a first fluid is injected; an inner needle connected to the inner nozzle body and having a hollow tube needle configured to provide a discharge port for the first fluid; an outer nozzle body assembled with the inner nozzle body and having an injection port through which a second fluid is injected; an outer needle connected to the outer nozzle body and disposed to surround the hollow tube needle provided to the inner needle, the outer needle having a hollow tube needle configured to provide a discharge port for the second fluid; an inner needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the inner needle; and an outer needle positioning unit configured to control a location of a central axis of the hollow tube needle provided to the outer needle.

A spray system for spraying a fluid, the spray system including a bladder for holding the fluid; and a sprayer including a fluid conductor, a fluid mover, at least one first nozzle and a second nozzle, the fluid conductor including an inner diameter, a first end configured to be connected to the bladder, a second end configured to be selectively connected to one of the at least one first nozzle and a second nozzle, wherein the second nozzle including a through opening at least about the same size as the inner diameter, wherein the fluid mover is configured to draw the fluid from the bladder through one of the at least one first nozzle to create a spray of the fluid and the second nozzle to return at least a portion of the fluid to a storage tank.

An electrostatic coating handgun configured to spray electrically charged atomized paint onto a workpiece. The electrostatic coating handgun includes: a body portion extending in a longitudinal direction, the longitudinal direction being the same direction as a spraying direction; a grip portion to be held by an operator, the grip portion extending downward from a rear part of the body portion; a rotating head configured to emit the paint, the rotating head being rotatably supported by a front end of the body portion; an air motor configured to apply rotational power to the rotating head, the air motor being located behind the rotating head in the body portion; and a high voltage generator configured to apply a voltage to the paint to be emitted from the rotating head. The air motor is located forward of the grip portion, whereas the high voltage generator is located above the grip portion.

An electrostatic coating handgun configured to spray electrically charged atomized paint onto a workpiece. The electrostatic coating handgun includes: a body portion extending in a longitudinal direction, the longitudinal direction being the same direction as a spraying direction; a grip portion to be held by an operator, the grip portion extending downward from a rear part of the body portion; a rotating head configured to emit the paint, the rotating head being rotatably supported by a front end of the body portion; an air motor configured to apply rotational power to the rotating head, the air motor being located behind the rotating head in the body portion; and a high voltage generator configured to apply a voltage to the paint to be emitted from the rotating head. The air motor is located forward of the grip portion, whereas the high voltage generator is located above the grip portion.

The present invention provides an electrostatic spraying device and an electrostatic spraying method. The electrostatic spraying device includes: a high-voltage electrostatic generator configured for generating high-voltage static electricity and including a positive output terminal and a negative output terminal; a charging electrode connected to the positive output terminal or the negative output terminal of the high-voltage electrostatic generator and configured for directly contacting a liquid to be sprayed and applying electrostatic charges to the liquid to be sprayed; and an ionizing emitting electrode connected to the negative output terminal or the positive output terminal of the high-voltage electrostatic generator and configured for ionizing the surrounding air to realize an ionizing grounding.