| 摘要 |
A coating powder feed method, coating powder feeding device, electrostatic powder spraycoating apparatus containing such a coating powder feeding device. The invention includes a dense phase powder pump fitted with at least one feed chamber. A control signal to create a partial vacuum in the feed chamber is generated no earlier than simultaneously with, preferably by a predetermined delay time after, a control signal opening a powder intake valve of the feed chamber, as a result of which the beginning of partial vacuum buildup in the feed chamber shall take place no earlier than simultaneously with the initial opening of the powder intake valve or by a defined time delay after the opening of the powder intake valve.
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