F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 15/04 (2006.01) F04C 15/00 (2006.01)
Patent
CA 2157843
The pump comprises a drive part 2 and a pump body 1, the drive shaft 4 being sealed off from the corrosive medium by a shaft seal. The shaft seal consists of a stator ring which is fitted into the pump body 1 and/or into the drive part 2 and through which the drive shaft 4 is passed while leaving a seal gap 5. One or more dry-running bearings 11 for the drive shaft 4 is/are arranged in the drive part 2. The drive part 2 also comprises a gas channel 18, which communicates in terms of flow with the seal gap 5, with a supply connection 19 and a discharge connection 20. While the pump is operating a hot gas is admitted to the gas flow channel 18 via the supply connection 19 and leaves the drive part again through the discharge connection 20. The supply pressure is set such that the static pressure of the gas in the gas flow channel 18 above the stator ring 3 is higher than the pressure of the delivery medium which partially or completely fills the pump body.
Dummersdorf Hans-Ulrich
Gestermann Fritz
Harle Helmut
Minz Franz-Rudolf
Waldmann Helmut
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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