Ejector pump having pressure operated motive fluid valve and electromagnetic change-over valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 1987
Grant Date -
N/A
app pub date -
Jun 10, 1985
filing date -
Jun 20, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Herein disclosed is an ejector pump which can be used favorably with a sucking disk for carrying an article. In the bore of a pump body, there are fitted a nozzle block having a nozzle hole and an ejector block which has an ejector hole aligned with the nozzle hole of the nozzle block, so that a suction chamber formed between the nozzle hole and the ejector hole may communicate with a suction port which is formed in one side of the pump body. Fitted in the pump body, too, is a spool valve for opening or closing a communication passage providing communication between the nozzle hole and the compressed air inlet port of the pump body. The spool valve is controlled by an electromagnetic change-over valve disposed outside of the pump body. The pump has the advantage that the compressed air can be supplied at a high flow rate to establish a strong sucking force even with a relatively small-sized electromagnetic change-over valve.
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