| 摘要 |
The invention relates to a liquid filter (1), in particular an oil or fuel filter of an internal combustion engine, having a filter housing (10) arranged upright in operation and a hollow cylindrical filter insert (3) accommodated therein so as to be exchangeable, wherein the filter housing (10) has a dirty liquid feed (13), a clean liquid outlet (14) and a liquid drainage channel (15), and is closed in operation by means of a detachable top-side cover (16), wherein, in the drainage channel (15), a drainage valve (2) is arranged, the valve body (20) of which is displaceable in an axially limited manner in the drainage channel (15) between a closing position closing the channel and an open position clearing it, wherein the valve body (20) is detachably attached to the cover (16) or the filter insert (3), wherein, when the cover (16) is mounted on the filter housing (10), said cover presses the valve body (20) directly or via the filter insert (3) into the closing position closing the drainage channel (15) and wherein, when the cover (16) is removed from the filter housing (10) in the axial direction thereof, the valve body (20) is first able to be carried in the opening direction to its open position and then is detachable from the cover (16) or filter insert (3) and is retainable in its open position by means of a holding element. The liquid filter (1) according to the invention is characterized in that the holding element is formed by at least one spring element which automatically expands into the opening position of the valve body (20) by its spring force and comes into attachment to a spring element restraint (24) holding the valve body (20) in its open position and which by exertion of a force contracts, and thus a displacement of the valve body (20) in the closing direction is brought about, releasing engagement with the spring element restraint (24). |
