The present invention relates to a spray head for a paint sprayer, in particular a paint spray gun or a paint spray lance, for generating a paint jet. Here, an air cap comprises two curtain air channels whose outlets are arranged between air horns, and whose outlets lie opposite each other in relation to a longitudinal axis of a through-opening of the air cap.

A head of a spray gun mounted on a core inside a spray gun, comprises a nozzle disposed at an end of the core; a sprayer covered at the front of the nozzle, the sprayer having a plurality of side air passing blocks; a rotatable air volume regulating sleeve disposed at the rear of the nozzle; a plurality of air regulating holes disposed on the rotatable air volume regulating sleeve; a sprayer nut for enclosing the nozzle, the sprayer, and the rotatable air volume regulating sleeve; wherein the nozzle has a plurality of side air passing holes, when the rotatable air volume regulating sleeve rotates, at least one air passing hole overlaps with at least one air regulating hole, overlapping between at least one air passing hole and at least one air regulating hole adjust an air volume passing through the head of a spray gun. The present invention can perform high-precision air volume regulation and is particularly suitable for high-precision spraying operations.

The present invention discloses a spray gun, which comprises a gun body; a liquid container surface disposed below the gun body; a hollow connecting pipe disposed between the gun body and the liquid container. The liquid container is in communication with the interior of the gun body through the hollow connecting pipe; the liquid container has a liquid feeding hole on the top; the head portion of the gun body is located above the top of the liquid container and tilted downwardly away from the top of the liquid container. In the present invention, there is a relatively large space above the liquid feeding opening, providing an efficient space for a smooth liquid feeding operation. Liquid feeding can be performed inside the liquid container without replacing the liquid container and the liquid is ensured not to be split during the operation.

The present invention provides a spray gun for conveniently adding liquid, including a gun body, a material pot, a thimble assembly and a trigger assembly, the gun body is provided with a liquid filling channel, the lower end of the liquid filling channel communicates with the material pot, and the liquid filling channel penetrates upwardly through the gun body, so that the upper end of the liquid filling channel is connected to the outside world, and the upper end of the gun body is provided with a sealing cover assembly for sealing off the liquid filling channel. The solution, the sealing cover assembly is located on the top of the gun body, and the space for operation is large when liquid is added, so as to realize the purpose of conveniently and quickly adding liquid.

The invention relates to a device for rotating a fluid inside a spray nozzle, this device comprising a body defining at least one helical slot and/or a helical hole for the passage of all or part of the fluid. This device can be secured to a spray nozzle or a needle valve closing the spray nozzle. The invention also relates to an applicable device comprising such a device.

Removable nozzle tips, spray head assemblies including the nozzle tips and liquid spray guns that include the nozzle tips are described herein. The removable nozzle tips provide and define both the liquid nozzle openings and the center air outlets for the center air of the liquid spray guns and the spray head assemblies. The nozzle tips are removably attached over a liquid nozzle port formed in the spray head assembly and/or on the spray gun platform or body using any suitable attachment mechanism. The removable nozzle tips can be removed from the liquid spray gun or the spray head assembly without disturbing the remainder of the spray gun or the spray head assembly.

This method serves to manufacture a coating gun, this gun comprising an injector for spraying a round jet along a spray axis and a cap arranged coaxially around the injector, this cap being provided to form an air knife around the jet. This method comprises a step consisting of sizing an axial excess dimension of the injector relative to the cap based on the diameter of the injector. The coating gun comprises an injector for spraying a round jet along a spray axis, a cap arranged coaxially around the injector, provided to form an air knife around the jet. The injector protrudes axially relative to the cap and the axial excess dimension of the injector relative to the cap can be adjusted between a minimum value and a maximum value that are determined based on the diameter of the injector.