Hydac Filtertechnik Gmbh

Armin Schmidt

Michael Otto Sakraschinsky

Volkmar Klein

Edwin Koch

Michael Smolong

Roland Herber

Laura Weiter

An assembly forms a seal between components () having sealing zones (). The sealing zones face each other in a functional position of the components. A sealing element () is on the sealing zone () of one component (). A sealing surface () is on the sealing zone () of the other component () to form a radial seal. The components () can be brought into the functional position by a relative movement in the axial direction. The sealing element () sealingly interacts with the sealing surface () in the functional position. A third component () associated with an actuating part () acts on the sealing element () in the functional position of the components () to deform the element to increase the sealing force.

Arrangement for forming a seal

A device lubricates a transmission () and a bearing ('), in particular a rotor bearing in a wind turbine. The transmission () and the bearing (&#x2032;) are each associated with at least one lubrication circuit (). A lubricating medium flows in each circuit during the operation of the device. A heat exchanging device () transfers heat between the lubrication circuit () of the transmission () and the lubrication circuit () of the bearing (&#x2032;). The heat exchanging device () at least partially compensates for a difference between the temperature of the lubricating medium in the lubrication circuit () of the transmission () and the temperature of the lubricating medium in the lubrication circuit () of the bearing (&#x2032;) by heat compensation during the operation of the device.

Device for lubricating a transmission and a bearing

A filter element includes a filter material () having individual filter folds () folded in a star-like manner. At least one fluid-permeable support element () extends at least partially in the space between two adjacent filter folds () and/or on the inner peripheral side and/or external peripheral side of the filter folds (). The support element () is provided with filter-active substances or is made of filter-active substances. A certain type of filter auxiliary agent can be obtained which is used to reduce influences of fluid components which reduce the service life, in the form of specific ageing products or in the form of other agents which damage the fluid.

Filter element

An apparatus for determining the filterability of fluids, in particular of transmission oils, has a test filter device () through which a sample amount of the fluid can flow, and a line system which forms a circulation circuit () for the fluid. The line system includes a foam tester () receiving the sample amount of the fluid. A circulating pump () removes fluid from the sample amount situated in the foam tester () and conveys it through the filter device () and back to the foam tester ().

Apparatus for determining the filterability of fluids, in particular of transmission oils

A lubricating device for gear trains (), especially for wind power stations, includes at least two gear stages () that are disposed next to each other and are effectively interconnected, and a lubricant circuit () into which at least one filter unit () is mounted. To prevent stagnant resting zones for the lubricant from being created within the gear train housing including the gear stages, while ensuring that the entire lubricant that circulates in the gear stages is fed to the filter unit to be drawn off and filtered within predefined periods of time, the lubricant circulating inside the lubricant circuit () is discharged at one gear stage (), is drawn off through the filter unit, and can then be fed to the other gear stage ().

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Illingen, Germany

Armin Schmidt