High-pressure reciprocating pump

Details High-pressure reciprocating pump High-pressure reciprocating pump

1991-01-17

1992-04-07

Bertsch, Richard A.

Pumps

Expansible chamber type

Pumping member position controlled port

123509, F04B 704, F04B 3910

Patent

active

051023091

ABSTRACT:
A high-pressure pump with a plunger reciprocating in a cylinder has a cylindrical guide surface on the plunger chamber side of the inlet/outlet port and a cylindrical guide surface on the drive side of an axial chord of 0.05 to 0.5 times the plunger diameter. This provides an advantage in that under high pump pressure the plunger emerges from the guide surface so that the plunger surface areas exposed to unilateral side forces are reduced. This prevents the plunger from canting and possibly seizing on the cylinder wall.

REFERENCES:
patent: 2831433 (1958-04-01), Seifert et al.
patent: 3438359 (1969-04-01), Thoma
patent: 3885895 (1975-05-01), Staudt et al.
patent: 4829646 (1989-05-01), Cigolotti et al.
patent: 4897024 (1990-01-01), Hatz et al.
patent: 4975029 (1990-12-01), Hatz

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