Hammelmann Maschinenfabrik Gmbh

Paul Hammelmann Maschinenfabrik Gmbh

Burkhard Helmig

Michael Jarchau

Egbert Helmig

A sealing device for a shaft () or rod which is movably disposed in a guide arranged between a high-pressure space () and a low-pressure area () of a pressure-resistant housing () bounding the high-pressure space (), and which is surrounded by a sealing ring (), is further developed such that the sealing ring () is partially deformed by means of a deformable pressure ring () supported under pressure at the outer circumference and circumferentially rests against the shaft () or the rod or almost rests against the shaft () or the rod.

Sealing device

A high-pressure plunger pump assembly, in particular for working pressures above 2000 bar, includes a housing, a cylinder received in the housing and defining a working space which has an expanded area along a section thereof for receiving a sleeve therein, and a plunger slidably moveable in the working space of the cylinder and in the sleeve and being suitably operated by a drive for reciprocating movement. The sleeve has one end closer to the plunger drive and formed with an annular flange. A suction valve communicates with the cylinder for admitting fluid from a suction chamber into the working space, and a pressure valve communicates with the cylinder for expelling fluid from the working space during a pressure stroke of the plunger, with a seal being positioned in a transitional area from the annular flange to the cylinder between the working space and the suction chamber.

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Beckum, Germany

Burkhard Helmig