Hammelmann Maschinenfabrik Gmbh

Hammelmann Corporation

Egbert Helmig

Michael Jarchau

Burkhard Helmig

Alwin Goering

Christian Stoffers

A nozzle head, having a feed line for a high-pressurized fluid, a channel for delivering an abrasive substance, with which the fluid can be loaded, as well as a discharge line, from which the fluid, loaded with abrasive substance, can issue, is designed such that the feed line and the channel run parallel or almost parallel to each other, and that the discharge line issues sideways from the nozzle head so as to run at an angle to the feed line.

Nozzle head

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 device for cleaning an inner pipe which comprises a nozzle head comprised of a feed borehole axially disposed therein, at least two rotation nozzles communicating with the feed borehole, at least two cleaning nozzles communicating with the feed borehole and a shaft. A rinsing nozzle communicates with the feed borehole and extends upwardly at an angle from the longitudinal axis of the feed borehole. The shaft is received in an outer sleeve whereby when the device is inserted into an inner pipe and a medium is flowed through the borehole and out of the rotation nozzles a force is generated when the medium emerging from the rotation nozzles contacts the wall of the inner pipe which force causes the nozzle head to rotate.

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Ennigerloh, Germany

Egbert Helmig