Sealing of Roots blowers
Thread Content
For Roots blowers used to transport gas containing carbon monoxide, the pressure is several thousand pascals; I would like to know what type of shaft seal would be suitable Could those with experience share their insights, or explain the performance of various types of shaft seals in actual use?
A labyrinth seal should be sufficient. .
Why use a Roots blower for just a few thousand pascals? Moreover, it’s gas involved – the composition of the gas is a factor to consider. The explosion-proof rating of Roots blowers isn’t sufficient, and their failure rate is high. I personally recommend using a centrifugal pump instead
Thank you. Regarding these two types of machines, what I mainly want to know is: when using rotary vane blowers to transport gas (primarily carbon monoxide), what type of mechanical seal is commonly used in practice? How is it being used? Is there a significant leak? For example, applications such as mazes, fillers, skeletons, and machinery.
Actually, a centrifugal fan can be used. The small process gas blowers I developed use lip seals, and the results are quite good. If a carbon ring is used for sealing, nitrogen isolation is required. After all, carbon monoxide is toxic.
Lip seals tend to break easily, right? Its lifespan isn’t very long, is it?
I don’t know about what’s available domestically, but the one we use works very well
Lip seals work fine too; our unit uses lip seals. Lateral side faces the ventral side.