Abstract: A waste liquid scattering prevention device includes a box body having an upper wall being formed with an insertion hole into which a tip portion of a paint gun is inserted, and an air ejection port that ejects air along an inner wall of the box body. A waste liquid scattering prevention method includes an arrangement step of inserting the tip portion of a paint gun into an insertion hole, a cleaning step of cleaning the paint gun, and an air ejecting step of ejecting air from an air ejection port along the inner wall of the box body.

Abstract: A cleaning device includes a box body, a cleaning nozzle that ejects cleaning liquid toward a paint gun, an air nozzle hole that is configured to eject air toward the paint gun, and an eaves portion that protrudes more toward a central axis line of the insertion hole than the air nozzle hole. A method of cleaning the paint gun includes ejecting cleaning liquid from the cleaning nozzle toward the paint gun. In the ejecting, air is ejected toward the paint gun from the air nozzle hole.

Abstract: An electrostatic coating device is provided with a housing, which has a cascade housing section that houses a cascade, and a motor housing section that houses an air motor. A clearance between the cascade and the inner wall of a first housing hole forms a first air flow passage. Furthermore, an annular clearance between the air motor (specifically, an air turbine) and the inner wall of a motor chamber forms a second air flow passage. The first air flow passage and the second air flow passage are communicated with each other via, for instance, a third air flow passage that includes a first communication passage, a circular recessed section, a second communication passage, and a third communication passage.

Abstract: An electrostatic coating device is provided with a housing, which has a cascade housing section that houses a cascade, and a motor housing section that houses an air motor. A clearance between the cascade and the inner wall of a first housing hole forms a first air flow passage. Furthermore, an annular clearance between the air motor (specifically, an air turbine) and the inner wall of a motor chamber forms a second air flow passage. The first air flow passage and the second air flow passage are communicated with each other via, for instance, a third air flow passage that includes a first communication passage, a circular recessed section, a second communication passage, and a third communication passage.