Selection issues for gear pumps
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The operating temperature of the gear pump is between 160 and 200 degrees Celsius, with a normal flow rate of 25 cubic meters per hour. I would like to discuss what capacity the pump should have when choosing it – in other words, what should be the maximum designed flow rate of the pump.
It is recommended to use a larger gear pump to avoid excessive gear clearance, which can lead to a decrease in performance; the manufacturer will provide you with guidance when you consult them.
With such high operating temperatures, it is essential to take thermal expansion into account when determining the clearance of gear pumps, as this will cause the clearance to increase. The traffic can be increased by considering a normal margin; no special considerations are needed. Furthermore, rising temperatures pose a significant challenge to the pump’s materials, seals, and shaft sleeves. When considering the pump, thermal installation must be taken into account; high-temperature graphite bushings are required, as well as high-temperature packing seals or bellows seals. Another important point is to reduce the pump’s rotational speed, which is generally around 200 RPM. If you have any questions, feel free to send me an email!