ADJUSTABLE DEVICE FOR EXHAUSTION AND/OR SUPPLY OF GAS

摘要

The present invention relates to an adjustable device for exhaustion and/or supply of gases and gas supported particles, said device (1) comprising at least one exhaustion and/or supply conduit (4) which is pivotable in at least vertical direction, whereby at least one force-producing balancing device (54) is provided for balancing the exhaustion and/or supply conduit (4). In order to provide at such an adjustable device that the balancing device (54) generates balanced forces which correspond with the correct balancing requirement, the force-producing balancing device (54) cooperates with a compensating device (57) which compensates for differences between the balancing force that said force-producing balancing device (54) exerts on the exhaustion and/or supply conduit (4) and the force required for balancing said exhaustion and/or supply conduit in substantially all its positions.