| 摘要 |
1. Device for a flotation machine in which a drive shaft for mixing slurry and transporting air is driven by a drive arrangement and the drive shaft is provided with a bearing assembly and the drive shaft is at least partly hollow in the interior for transferring air to a rotor, characterised in that the drive shaft (7) is provided with at least one bearing (11) in a housing separated from at least one element (12) forming an air transfer chamber (13) around the drive shaft (7), and the drive shaft (7) has at least one opening (16) in order to create an essentially continuous connection between the air transfer chamber (16) and the interior (17) of the drive shaft (7). 2. Device according to the claim 1, characterised in that the element (12) forming the air transfer chamber (13) is installed in a non-fixed position to the drive shaft (7). 3. Device according to the claim 1, characterised in that the element (12) forming the air transfer chamber (13) is fixed to the drive shaft (7). 4. Device according to any of the proceeding claims, characterised in that the element (12) is removable and independent from the bearing housings (11). 5. Device according to the claim 1, characterised in that the drive shaft (7) has one opening (16) for the essentially continuous connection between the air transfer chamber (16) and the interior (17) of the drive shaft (7). |
