Reciprocating piston pump used as a fuel hand pump for diesel engines comprises annular sealing lips positioned in an interlocking annular chamber and interlocking with the inner wall of a hollow cylinder to produce a one-way valve function

摘要

Reciprocating piston pump comprises annular sealing lips (6) positioned in an interlocking annular chamber (11) and interlocking with the inner wall of a hollow cylinder (1) to produce a one-way valve function. Preferred Features: The annular chamber wall (10) is elastically positioned opposite the pump suction side. The elastic position of the annular chamber wall is acted on by a base body (7) of the sealing lips.