GB189717053A - Improvements in and relating to Centrifugal Pumps. - Google Patents

Abstract

17,053. Bernays, J. July 19. Centrifugal pumps; starting, facilitating.-When the pump is some distance above the supply a cistern C, Fig. 1, is placed about on a level with the pump, and connected by a pipe E from its lower part with the pump inlet, and by a pipe D from its upper part with the suction pipe, so that the pump is always full, and on starting immediately begins to draw from the supply. Slight modifications are described. Fig. 3<a> shows a form for use with an accessible f o o t valve M, so that the air in the pipe below the valve is not drawn into the pump. The pipe E, connected to the pump inlet, dips into the cistern C, its inner end being protected by a baffle K. The cistern C in all cases may be provided with an air vent valve. When the pump is not far above the level of the supply, an auxiliary fan, situated under water in the suction pipe, on a prolongation o f the main shaft if the latter is vertical, rotates on starting and raises water to the main. pump.