Powder dispensing device with a dilute phase powder pump

A powder dispensing device comprising:

• a dilute phase powder pump for conveying powder from a powder reservoir to a powder spraying device;
• and
• a control device integrated into the powder dispensing device, configured to set at least one parameter which is characterizing with respect to a spray coating process effected with the powder spraying device and/or with respect to powder conveyance effected with the dilute phase powder pump, wherein the control device forms a structural unit with the dilute phase powder pump,
• wherein the control device is realized as a control module and comprises a compressed air control with a central compressed air connection via which compressed air can be supplied to the compressed air control from an external compressed air source, wherein the compressed air control has at least one compressed air outlet for providing the compressed air used by the dilute phase powder pump for conveying powder, and wherein the compressed air control is configured to be adjusted by setting of a target powder conveying parameter by at least one of the group consisting of:
• a manually actuatable parameter setting element;
• external control signals provided on a communication bus of the control device;
• and a memory device storing a plurality of spray coating programs each having at least one respective adjustable parameter, to set a volume of compressed air provided via the at least one compressed air outlet per unit of time for conveying powder,
• wherein the at least one compressed air outlet of the compressed air control comprises a first compressed air outlet for providing conveying air used by the dilute phase powder pump for conveying powder and a second compressed air outlet for providing supplementary air used by the dilute phase powder pump for conveying powder, wherein the compressed air control is configured to set volumes of the conveying air/supplementary air provided via the first and second compressed air outlet by the dilute phase powder pump per unit of time for conveying the powder,
• wherein the dilute phase powder pump is realized as a pump module and comprises a powder-conveying injector having a drive nozzle and a collecting nozzle, wherein the collecting nozzle of the powder-conveying injector includes a collecting channel distanced axially opposite the drive nozzle of the powder-conveying injector, wherein the powder-conveying injector includes a first compressed air connection via which the conveying air can be supplied to the drive nozzle and a second compressed air connection via which the supplementary air can be supplied to the powder-conveying injector, wherein the first compressed air connection is fluidly connected to the first compressed air outlet of the control device realized as a control module and the second compressed air connection is fluidly connected to the second compressed air outlet of the control device realized as a control module,
• wherein the dilute phase powder pump realized as a pump module comprises a powder inlet via which the powder from the powder reservoir can be supplied to the dilute phase powder pump realized as a pump module, and wherein the dilute phase powder pump realized as a pump module comprises at least one pinch valve which is actuatable by the control device which is arranged in a flow path between the powder inlet of the dilute phase powder pump realized as a pump module and a powder inlet of the drive nozzle for selectively interrupting a fluidic connection between the powder inlet of the dilute phase powder pump realized as a pump module and the powder inlet of the drive nozzle, and
• wherein the dilute phase powder pump realized as a pump module has a compressed air inlet device via which compressed air can be supplied to the powder inlet of the drive nozzle of the powder-conveying injector, wherein the compressed air inlet device is arranged in a flow path between the at least one pinch valve and the powder inlet of the drive nozzle of the powder-conveying injector.