초록 ▼

A molten material pump includes an impeller housed within a base member of the pump. A plurality of grooves are defined in a peripheral sidewall of the impeller for either drawing a molten material into the base member's chamber or pushing molten material out of the base member's chamber. The impell

A molten material pump includes an impeller housed within a base member of the pump. A plurality of grooves are defined in a peripheral sidewall of the impeller for either drawing a molten material into the base member's chamber or pushing molten material out of the base member's chamber. The impeller is rotated by a rotatable shaft connected to an upper surface of the impeller. The rotatable shaft includes a non-circular shaped lower end dimensioned to be received within a cooperating opening in the impeller. The molten material pump further includes a connecting assembly for interconnecting components of the molten material pump. The connecting assembly includes a first mounting member attached to a first pump component that is dimensioned to be fitted within a cooperating recess of a second mounting member attached to a second pump component. In another embodiment of the invention, a stub shaft connects an upper shaft portion of the shaft to the impeller. The stub shaft includes a universal joint that is not rigidly connected to the upper shaft portion. In addition, the universal shaft is configured to allow the stub shaft and impeller to pivot. A floating deflector block weighs on an upper sealing block of the pump for enhancing the seal at the pump's bearing surfaces.

대표청구항 ▼

1. An impeller for a molten material pump comprising:a substantially cylindrical body defining an interior opening and having an upper surface a lower surface and a peripheral sidewall; a plurality of passages extending through the peripheral sidewall communicating with the interior opening; and a p

1. An impeller for a molten material pump comprising:a substantially cylindrical body defining an interior opening and having an upper surface a lower surface and a peripheral sidewall; a plurality of passages extending through the peripheral sidewall communicating with the interior opening; and a plurality of grooves in the peripheral sidewall of the impeller body. 2. The impeller according to claim 1, wherein the grooves extend from an intermediate portion of the impeller's peripheral sidewall to the upper and the lower surfaces of the impeller's body.3. The impeller according to claim 2, wherein ends of the grooves disposed at an intermediate portion of the impeller are generally rounded.4. The impeller according to claim 1, wherein the depth of the grooves is in a range of 0.08-0.3175 centimeters and the width of the grooves is in a range of 0.3175-1.27 centimeters.5. An impeller for a molten material pump comprising a substantially cylindrical shape and including passages from a peripheral sidewall to an interior, wherein the side wall further includes a plurality of grooves extending substantially diagonally to top and bottom surfaces of the impeller.6. The impeller of claim 5 further comprising a non-circular opening for receiving an associated shaft.7. An impeller for a molten metal material comprising:a substantially cylindrical body comprising a refractory material and having an upper surface, a lower surface and a peripheral sidewall; a plurality of passages extending through the body of the impeller; and a plurality of grooves in the peripheral sidewall extending from an intermediate portion of the peripheral sidewall to the upper and the lower surfaces. 8. An impeller for a molten metal material comprising:a substantially cylindrical body comprising having an upper surface, a lower surface and a peripheral sidewall; a plurality of passages extending through the body of the impeller; and a plurality of grooves in the peripheral sidewall having a depth in a range of 0.08-0.3175 centimeters. 9. The impeller of claim 8, wherein the grooves have a width in a range of 0.3175-1.27 centimeters.10. An impeller for a molten metal material comprising:a substantially cylindrical body comprising having an upper surface, a lower surface and a peripheral sidewall; a plurality of passages extending through the body of the impeller; and a plurality of grooves in the peripheral sidewall wherein an end of at least one groove disposed at an intermediate portion of the impeller is generally rounded.