OVERFLOW VORTEX TRANSPORTING UNIT Russian patent published in 2015 - IPC F04D7/06 

FIELD: engines and pumps.

SUBSTANCE: group of invention relates to a pump for molten metal. A pump includes an elongated pipe having the lower end and the upper end and forming a pump chamber, a shaft arranged in the above pipe, and an impeller. The impeller can be rotated with a shaft, besides, it is located near the lower end and has an inlet guide section with a hollow central part and an upper section with blades. Diameter of the pump chamber adjacently with the above impeller exceeds diameter of the impeller at least by 1.1 times. In the lower end there is an inlet, and in the upper end there is an outlet. The upper end includes a chamber, the diameter of which exceeds diameter of the pipe between the above inlet and the above outlet.

EFFECT: group of inventions is aimed at equilibrium vortex having low intensity at low air influx or at its absence, as a result of which a small amount of scale is formed; the device has a small area of the support surface and allows arranging the impeller close to the bottom of the cooking surface, which provides a possibility of reduction of metal level and its use in existing furnaces without adding any sufficient changes to them.

20 cl, 13 dwg