| 摘要 |
The invention relates to a dosing device for volumetrically dosing pourable dosing material, preferably pourable sample material, comprising at least one metering unit (3) that is open towards the top and that is preferably shaped like a beaker. The opening edge (22) of said metering unit defines an opening cross-section, and at least one dosing blade (24) comprising a blade edge (25) that is associated with the opening cross-section and that is preferably parallel to said section. The metering unit and/or the dosing blade is/are displaceable in order to obtain a lateral relative blade movement between the metering unit (3) and the blade edge (25). The aim of the invention is to improve said dosing device in an advantageous manner such that a longitudinal guide (26), along which the dosing blade (24) can be guidingly displaced in a transversal manner to the opening cross-section (23), is provided and that maintaining means (34) that are suitable for producing and adjusting in a dimensionally adjustable manner the maintaining force (61) acting upon the dosing blade (24) in relation to the longitudinal guide (26). When the forces (60) that are exerted upon the dosing blade (24), after the stripping process, exceed the maintaining force, the dosing blade (24) is displaced back along the longitudinal guide (26). |
