Abstract:
The invention relates to a powder supplying device for a powder coating installation with at least one powder container, which has a powder chamber for coating powder, and with at least one powder injector, which is connected or can be connected to a powder discharge channel opening out via a powder discharge opening in the powder chamber, in order to suck coating powder out of the powder chamber in the powder coating operation of the powder coating installation with the aid of conveying compressed air fed by the powder injector. In order to make it possible for the powder to be changed quickly in an easy manner, it is provided according to the invention that the powder discharge channel has a reduced length of at most 300 mm, preferably a length of 160 mm to 240 mm and more preferably a length of 200 mm.
Abstract:
A powder supplying device for a powder coating installation with at least one closed or closable powder container, which has a substantially cuboidal powder chamber for coating powder. In order to quickly change the powder, at least one cleaning compressed-air inlet to which a compressed air source can be connected in a cleaning operation of the powder coating installation for removing residual powder from the powder chamber, in order to introduce cleaning compressed air into the powder chamber, is provided in a side wall of the powder container. In addition, at least one residual powder outlet is provided, through which residual powder can be driven out from the powder chamber with the aid of the cleaning compressed air introduced into the powder chamber. The at least one cleaning compressed-air inlet has an inlet opening, which points in the same direction as the outlet opening of the residual powder outlet.
Abstract:
A compressed air throttle apparatus comprising at least one throttle valve adjusted by an electric motor, further an electric circuit fitted with contacting elements to alternatively interrupt and close the electric circuit in relation to the throttle valve settings. This throttle apparatus preferably is applicable to a compressed air path of powder spraycoating equipment.
Abstract:
A spray apparatus for coating material, in particular for coating powders, contains a spray outlet (4) spraying the coating material, a shaping air outlet (10) in the form of a plurality of holes (14) shaping the spray jet (8) and an ambient-air passage (50) radially configured between the spray outlet (4) and the holes (14) to aspirate ambient air by means of the flow suction effect of the spray jet (8) and/or of the shaping air flow (11).