Fluid Delivery Device, Injection Device, Ground Milling Machine, And Method

A fluid delivery device for an injection device for introducing a fluid into a work chamber of a ground milling machine, comprising:

• a fluid supply chamber including at least one outlet opening which is closable by a displaceable tappet,
• a displacement device configured to move the tappet is movable between a closing position, in which the outlet opening is closed by the tappet, and an open position, in which the outlet opening is at least partially opened for delivering fluid outward out of the fluid supply chamber,
• wherein the tappet comprises a tappet shaft having an opening region and a tappet head for closing the outlet opening, the opening region having a cross-sectional area that is smaller than a minimum cross-sectional area of the outlet opening, and the tappet head having a cross-sectional area that is greater than the minimum cross-sectional area of the outlet opening, and
• that the tappet, when being displaced in the opening direction from the closed position into the open position, is moved such that the tappet head is pushed outward at least partially away from the outlet opening, and
• that the tappet, when being displaced in the closing direction from the open position into the closed position, is moved such that it is retracted toward the outlet opening until the tappet head closes the outlet opening to the outside.