FIELD: manufacturing technology.
SUBSTANCE: metal housing of the pump with the fluorocarbon polymer (PFA) liner veneer is used for working with corrosive liquids contains a suction chamber with a PFA liner and a spiral chamber with a PFA liner to accommodate the impeller. Helical chamber receives and then supplies the liquid by means of a delivery element. Suction chamber with a PFA liner and a spiral chamber with a PFA liner are produced separately in the form of two parts during the injection molding process, and then assembled to produce a pump casing to reduce the residual stress, occurring in the PFA liner.
EFFECT: invention is aimed to increase production efficiency, to reduce production costs and to increase the tensile strength, in particular to maintain the stiffness of the shaft support and improve the strength of the pump casing.
3 cl, 8 dwg
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