FIELD: engines and pumps.
SUBSTANCE: invention relates to magnetic drive pumps and can be used in industrial processes related to corrosion media. A stationary shaft comprises a metal front support integrated with the pump housing in the pump inlet and coated with polymeric shell from fluoropolymer. The back bearing surface is located on the tightly sealed bottom side of the protective coating to provide an additional support for the stationary shaft. The impeller has a channel for decreasing of flow rate at the inlet to ensure a low allowable cavitational reserve.
EFFECT: ensuring of use in high corrosive and high temperatures conditions up to 200°C for improvement of rigidity of the front support.
9 cl, 7 dwg
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