| 摘要 |
The invention relates to a device (1) for providing a liquid additive, comprising at least one first pump chamber (3) for conveying the liquid additive, and a rotary drive (4). The first pump chamber (3) is arranged around a drive axis (5) of the rotary drive (4). Inside the first pump chamber (3), at least one seal (6) is formed, which can be displaced from the rotary drive (4) around the drive axis (5). The device (1) has at least one second pump chamber (7), which is arranged along the drive axis (5) adjacent to the first pump chamber (3). |
