PUMPING UNIT Russian patent published in 1997 - IPC

FIELD: pumping viscous, heterogeneous and aggressive liquids, as well as smelt. SUBSTANCE: part of pipe line 3 adjoining funnel-shaped head 1 with delivery valve 2 is secured as cantilever. Drive 4 is engageable with cantilever part of pipe line 3 which may be secured rigidly or by means of hinge; it is made with minimum rigidity in direction of main deformation. Parts of pump which are in contact with aggressive liquid are made from materials resistant to such media. EFFECT: enhanced reliability. 4 cl, 1 dwg