Dumping flow check valve for preventing abnormal close

The utility model discloses a dumping flow check valve for preventing abnormal close, which comprises an upper valve body (6), a lower valve body (11) and a movable valve core, wherein the upper valve body (6) and the lower valve body (11) are fixedly connected, the upper valve body (6) is provided...

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Bibliographische Detailangaben
Hauptverfasser:	XU XIONGJIAN, SHAO ZHIQIANG
Format:	Patent
Sprache:	chi ; 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:	The utility model discloses a dumping flow check valve for preventing abnormal close, which comprises an upper valve body (6), a lower valve body (11) and a movable valve core, wherein the upper valve body (6) and the lower valve body (11) are fixedly connected, the upper valve body (6) is provided with an oil and gas inlet channel (5), the lower valve body (11) is provided with an oil and gas outlet channel (12), the upper valve body (6) is provided with a valve hole (7), and the lower valve body (11) is provided with a ball seat (14); the movable valve core consists of an inner cover (9) and a valve core (8); and the ball seat (14) is provided with balls (10), the inner cover (9) covers on the balls (10), the valve core (8) is fixedly arranged on the inner cover (9), the valve core (8) is matched with the valve hole (7), and the inner cover (9) is provided with at least one air vent or groove (15). By adopting the structure, the dumping flow check valve has the advantages of simple and reasonable structure,