Ejector pump having pressure operated motive fluid valve and ele

Details Ejector pump having pressure operated motive fluid valve and ele Ejector pump having pressure operated motive fluid valve and ele

1985-06-10

1987-04-07

Croyle, Carlton R.

Pumps

One fluid pumped by contact or entrainment with another

Jet

294 642, F04F 548

Patent

active

046556923

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.

REFERENCES:
patent: 988224 (1911-03-01), Sweeny et al.
patent: 1873623 (1932-08-01), Morrison
patent: 2874989 (1959-02-01), Reynolds
patent: 3967849 (1976-07-01), Cagle
patent: 4178760 (1979-12-01), Alf et al.
patent: 4402651 (1983-09-01), Ise
patent: 4549854 (1985-10-01), Yamamoto

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