Diaphragm type high pressure shut-off valve

Diaphragm type high pressure shut-off valve

PCT No. PCT/JP94/00457 Sec. 371 Date Nov. 6, 1995 Sec. 102(e) Date Nov. 6, 1995 PCT Filed Mar. 22, 1994 PCT Pub. No. WO94/21951 PCT Pub. Date Sep. 29, 1994The invention has its object to provide a diaphragm type high pressure shut-off valve which is simple in external shape, can realize miniaturizat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: UCHISAWA, OSAMU, YAMASHIMA, JUN
Format: Patent
Sprache:eng
Schlagworte:
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Beschreibung
Zusammenfassung:PCT No. PCT/JP94/00457 Sec. 371 Date Nov. 6, 1995 Sec. 102(e) Date Nov. 6, 1995 PCT Filed Mar. 22, 1994 PCT Pub. No. WO94/21951 PCT Pub. Date Sep. 29, 1994The invention has its object to provide a diaphragm type high pressure shut-off valve which is simple in external shape, can realize miniaturization and is convenient in handling. The shut-off valve comprises a cylindrical housing (10) having a supply unit for compressed air at its end in an axial direction (Q), a piston (19) provided in the housing (10) and adapted to reciprocate in response to the compressed air, a return spring (20) provided in the housing (10) so as to permit the piston (19) to return, a rack portion (19A) provided to extend from the piston (19), a cam pinion (17) having a pinion portion (17B) provided integrally with the pinion portion (17B) and a rotating shaft (18) supported by the housing (10), and a diaphragm (7) adapted for movement in response to displacements of stems (9,13) and abutting against the cam face portion (17A) of the cam pinion (17). As A drive mechanism and an energizing mechanism are accommodated in the single cylindrical housing, it is possible to realize adequate miniaturization and simplification to thereby contribute to reduction of the number of parts.