RECIPROCATING PUMP

PROBLEM TO BE SOLVED: To provide a reciprocating pump capable of preventing oil in a crank case from invading a pump chamber, preventing liquid in the pump chamber from invading the crank case and compacting a whole body. SOLUTION: This plunger pump has a piston rod 2 inserted in the crank case 1 st...

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Bibliographische Detailangaben
1. Verfasser:	TOJO NOBUO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a reciprocating pump capable of preventing oil in a crank case from invading a pump chamber, preventing liquid in the pump chamber from invading the crank case and compacting a whole body. SOLUTION: This plunger pump has a piston rod 2 inserted in the crank case 1 storing oil via an oil seal 3 and connected to a drive part reciprocating the piston rod 2. A plunger 9 connected to the piston rod 2 as one unit extends to a pump part performing pumping action sucking and discharging liquid via seal packing 11. Two washers 14, 16 are provided between the oil seal 3 and the seal packing 11 on an outer circumference of the piston rod 2 with an interval. Outer diameters C, D of the washers 14, 16 are larger than outer diameters E, F of the piston rod 2 and the plunger 9. COPYRIGHT: (C)2006,JPO&NCIPI