Boll & Kirch Filterbau Gmbh

Boll & Kirch Filderbzu Gmbh

Rüdiger Lennartz

Sivagnanam Kandiah

Willi Rott

Wilhelm Vieten

Heinz Heinrich Leonhard Sindorf

Birgit Trotzki

Stefan Schmitz

A backflushing filter for filtering oil includes filter candleswhich are open at both endsand disposed around a rotary shaftin a filter housing. A cleaning device is moved in conjunction with the rotary shaft and includes upper and lower flushing cocks communicating with an outflow valve via the shaft for cleaning the candles during a backflushing operation. The upper flushing cockis offset by an angle in the direction of rotation in relation to the lower flushing cockA lower closure elementmoves in conjunction with the upper flushing cock at the opposite end of a filter candle(s) selected for backflushing. Likewise, an upper closure element is associated with the lower flushing cock. The candles can be reverse-flushed in opposite directions and at different times by the flushing cocks and closure elements. The flushing cocks and closure elements are moved inside annular deflection hoods

Backflush filter, in particular for filtering lubricant oil

In a particularly noise-free and vibration-free operating precoated filter for filtering for example cooling lubricating flowing media, a filter candle surrounding a riser channel is mounted by means of a riser tube in a separating plate in an axially moveable manner. A filter cake adhering to the outside of the filter candle is loosened in such a manner that for example a disk-shaped rotary body comprises a shoulder between the track end and the track start along its track. As soon as a head end piece connected to the riser tube and moveable in an axial manner against the force of a spring is released from the rotating track end, the stored force of the spring accelerates the filter candle, so that the filter cake adhering to the filter candles is loosened by the acceleration of the filter candle and the impact pulse when a dampening ring arranged between the filter candle and the separating plate abuts the separating plate.

Precoated filter for the filtration of flowing media

Growing community of inventors

Pulheim, Germany

Rüdiger Lennartz