Diaphragm operated vacuum pump - has nozzle connection from working chamber to vacuum box of mechanical or electrical failure indicator
The arrangement indicates imminent failure of a vacuum pump (1) comprising a diaphragm (2), a working chamber (4), and valves (5, 6) with connections for a suction intake (7) and an outlet line (8). The chamber (4) is connected (10) with a vacuum chamber (9) via a narrow nozzle aperture (11). The ch...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The arrangement indicates imminent failure of a vacuum pump (1) comprising a diaphragm (2), a working chamber (4), and valves (5, 6) with connections for a suction intake (7) and an outlet line (8). The chamber (4) is connected (10) with a vacuum chamber (9) via a narrow nozzle aperture (11). The chamber (9) contains a spring-loaded (12) diaphragm (13) with follower pin (14) actuating an indicating instrument (16). The pin may act directly on a mechanical indicator. The chamber (9) may be arranged in the pump housing cover (19) whilst the pin actuates an electric switch for an indicator lamp. |
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