| 摘要 |
A fluid dosing device for a pressurized liquid is disclosed, which comprises a chamber ( 35 ) which is supplied with pressurized liquid by means of a liquid supply line ( 17, 19 ); a valve needle ( 9 ) which is guided through the chamber ( 35 ), the first end section of said valve needle being able to be lifted and the second end section thereof forming a valve in conjunction with a valve seat disposed on the housing ( 3 ). Metal bellows ( 33 ) are provided as a leadthrough element for the first end section of the valve needle ( 9 ). The metal bellows seal the chamber in said region in a tight manner. A throttle point ( 37, 39 ) is provided between the valve needle ( 9 ) and the inner wall of the chamber between the metal bellows ( 33 ) and the mouth ( 18 ) of the liquid supply line ( 17 ) leading into the chamber. |
