Grease gun

The utility model relates to a grease gun which comprises a gun head, the gun head comprises an exhaust device, the exhaust device comprises a hollow shell and a screw, the hollow shell covers one part of the screw, the upper end of the screw is provided with a nut, the lower end of the screw is pro...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XIA ZIQIANG, SHI ANPING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING LUBRICATING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to a grease gun which comprises a gun head, the gun head comprises an exhaust device, the exhaust device comprises a hollow shell and a screw, the hollow shell covers one part of the screw, the upper end of the screw is provided with a nut, the lower end of the screw is provided with a nut, the upper surface of the nut is provided with a sealing ring, and the sealing ring is arranged on the screw in a sleeved mode. A gap exists between the inner surface of the hollow shell and the outer surface of the screw to allow the screw to move up and down and air to flow, the exhaust device can be switched between a non-working state and a working state, in the non-working state, a gap exists between the bottom surface of the hollow shell and the upper surface of the sealing ring, and in the working state, the sealing ring is arranged between the bottom surface of the hollow shell and the upper surface of the sealing ring. The upper surface of the sealing ring abuts against the bottom surface