| 摘要 |
The invention relates to a flap valve for controlling a gas flow (9, 10), with a shielded tube (3), which conveys the gas flow, and a valve flap (6) disposed in it, which can pivot between an open position (18) and a closed position (17). The valve flap (6) is supported in a non-rotating fashion on an adjustable flap shaft (7) and in its closed position (17), covers the cross section (19) of the shielded tube (3) and in its open position (18), maximally opens this cross section. An acute angle alpha is enclosed between the axis (8) of the valve flap (6) and the axis (13) of the shielded tube (3). The pivotable valve flap (6) is encompassed in the shielded tube (3) by a valve tube (4), which contains a decoupling element (21). |
