| 摘要 |
<p>A device for the metered supply of a liquid, especially oil in oil-mist generators for pneumatic systems, with a housing, a valve body (40) fitted on a rod (48) acting together with a valve seat in the housing and blocking a supply line (12) to a drip aperture (36) connected to a liquid tank, a check valve (11) in the line (12) prevent back-flow to the tank, a controllable actuating device providing the axial strokes of the rod (48) from and to the valve seat (38) for the metered supply of liquid to the drip aperture (36), in which the valve body (40) takes the form of a piston fitted in a cylinder bore and forms an annular gap (80) therewith, and comprises upstream of the first valve seat (38) a second one (54) against which the valve body (40) lies in the other end position in which it also cuts the connection between the line (12) and the supply channel.</p> |
