SEAL STRUCTURE FOR RECIPROCATING PUMP WITH CYLINDRICAL COLLAR PORTION

A seal structure configured to be located between a space forming member forming a columnar inner space and a columnar reciprocating member move in the inner space. The seal structure includes an annular seal member that is configured to be located in the inner space, an annular pressing portion whi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAMANAKA, Yoshitaka, 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:	A seal structure configured to be located between a space forming member forming a columnar inner space and a columnar reciprocating member move in the inner space. The seal structure includes an annular seal member that is configured to be located in the inner space, an annular pressing portion which is located adjacent to the seal member and is configured to press the seal member in an axial direction, a compressive coil spring which is located adjacent to the pressing portion, and a cylindrical collar portion. The cylindrical collar portion is at least partially surrounded by the compressive coil spring to avoid interference between the compressive coil spring and the reciprocating member.