The transportation of large-temperature medium puts increased necessities over the composition, elements and auxiliary process with the pump. Let us mention the cooling needs of different temperature modifications and the organization's relevant pump style:
one. For media by using a temperature reduced than 120°C, there is usually no Distinctive cooling process, along with the medium itself is useful for lubrication and cooling. For instance DFL (W) H chemical pump, DFL (W) PH shielding chemical pump (safety volume of shielded motor must exceed H grade when around 90°C); and DFCZ common style and IH chemical pump can use temperature to adopt suspension structure The higher limit is a hundred and forty°C ~ 160°C; IHF lining fluorine pump can be employed approximately 200°C; only CQB standard magnetic pump use temperature will not exceed a hundred°C. It truly is really worth mentioning which the medium that is straightforward to crystallize or contains particles really should be equipped that has a sealing surface flushing line (intended with the interface).
two. For mediums above one hundred twenty°C and below 300°C, a cooling chamber shall be provided about the pump address. The sealing chamber shall also be linked to the coolant (with double mechanical seal), in the event the coolant just isn't permitted to penetrate into the medium. It should be taken just after cooling its very own medium (is usually realized by basic warmth exchanger).
three. For high temperature medium previously mentioned three hundred°C, not just the pump head portion really should be cooled, but will also the suspension bearing chamber needs to be Outfitted which has a cooling method. The pump framework is normally in the shape of a central assistance. The mechanical seal is ideally a steel bellows style, but the price is higher ( check here The value is in excess of ten times that of a normal machine seal).