| 摘要 |
An impeller shoe (70) comprising an elongated body (72) of abrasion-resistan t material extending longitudinally from an inner end (74) to an outer end (76) and having a pocket ( 84, 86) defined in the elongated body (72). T he pocket (84, 86) has an open end at the front (80) of the elongated body (72) and two opposing sides (88, 90 and 92, 94) extending transversely through the elongated body (72) toward the back (78) of the body. The two sides (88, 90 and 92, 94 ) of the pocket (84, 86) are oriented substantially parallel to each other and set at an angle with respect to the plane; (108) of the back of the body in a direction towa rd the inner end (74). The pocket:. (84, 86) also have a substantially even width measure d between the two sides (88, 90 and 92, 94) through the length of the pockets. To further extend the wear life of an impeller shoe (104), one or more rods (10 6) made of higher abrasion-resistant material may be embedded within the impeller shoe (104).
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