Shaft-sealing device for pump

Details Shaft-sealing device for pump Shaft-sealing device for pump

2008-11-11

2011-10-25

Patel, Vishal (Department: 3674)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S371000, C277S408000

Reexamination Certificate

active

08042813

ABSTRACT:
A shaft-sealing device includes a seal cover (3) attached to a pump housing (2) in which a rotary shaft (1) is mounted. The seal cover (3) includes a shaft-sealing section (381) and a coolant outlet (326) intersecting the shaft-sealing section (381) at an opening (329). A fender (34) projects from a side (328) of a circumference of the opening (329) into the shaft-sealing section (381). The fender (34) has a side face (340) facing the opening (329) and guiding a coolant into the coolant outlet (326) through the opening (329) when the coolant fed into the shaft-sealing section (381) flows through the opening (329) and encounters the side face (340). A shaft sleeve (4) extends through the seal cover (3) and is mounted around the rotary shaft (1) to rotate therewith. A pumping ring (6) is mounted in the shaft-sealing section (381) and securely mounted around the shaft sleeve (4). A gap (341) is formed between the pumping ring (6) and the fender (34) in a radial direction perpendicular to an axis of the rotary shaft.

REFERENCES:
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patent: 7014192 (2006-03-01), Takahashi et al.
patent: 2003/0006561 (2003-01-01), Takahashi et al.
patent: 2009/0140494 (2009-06-01), Roddis
patent: 300603 (1997-03-01), None

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