An impeller pump including a body and a cover assembled onto the body to form a housing. The body has a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft. An impeller is rotatably positioned in the housing with paddles at a periphery thereof. The impeller includes a
An impeller pump including a body and a cover assembled onto the body to form a housing. The body has a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft. An impeller is rotatably positioned in the housing with paddles at a periphery thereof. The impeller includes a sleeve with a central pocket formed therein for receiving a drive shaft, a circumferential support ring, and a plurality of radially extending paddles extending from the circumferential support ring. The body and cover define an annular space circumferentially extending around an interior of the housing for receiving the paddles of the impeller. The cover has a wall portion enlarging the annular space in the housing through a portion of the circumference of the annular space.
대표청구항▼
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A pump impeller comprising: a sleeve with a central pocket formed therein for receiving a drive shaft, a support ring surrounding the sleeve, a plurality of paddles attached to the sup
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A pump impeller comprising: a sleeve with a central pocket formed therein for receiving a drive shaft, a support ring surrounding the sleeve, a plurality of paddles attached to the support ring at radially inward ends thereof and extending radially outwardly, without further attachment to other portions of the impeller, a hub surrounding the sleeve; a top face wall lying substantially perpendicular to an axis of rotation of the impeller, and a plurality of curved impeller blades extending from a bottom side of the top face wall and between the hub and the support ring. 2. A pump impeller according to claim 1, further including a face seal carried in the hub. 3. A pump impeller according to claim 1, wherein the hub comprises a cylindrical hub wall spaced outwardly of the sleeve by a plurality of radial walls. 4. A pump impeller according to claim 1, including a plurality of openings through the top face wall. 5. A pump impeller according to claim 1, including a top face wall lying substantially perpendicular to an axis of rotation of the impeller and wherein the top face wall terminates radially at the support ring. 6. A pump impeller according to claim 1, including a thrust bearing carried at a closed end of the sleeve. 7. An impeller pump comprising: a housing formed of a body and a cover assembled onto the body, the body having a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft, an impeller rotatably positioned in the housing with water moving blades at a periphery thereof, a seal assembly extending between the body and the impeller, the body and cover defining an annular space circumferentially extending around an interior of the housing for receiving the water moving blades of the impeller, the cover having a wall portion configured to enlarge the annular space in the housing through a portion of the circumference of the annular space, a circumferential rib formed in the housing surrounding the seal assembly, and a window formed in the rib along a portion of its circumference. 8. An impeller pump according to claim 7, wherein a top surface of the rib is broken by the window. 9. An impeller pump according to claim 7, wherein the window is positioned on a fluid outlet side of the body. 10. An impeller pump according to claim 7, wherein a cutwater is formed in the annular space within the housing between the inlet and the outlet, and a leading and a trailing edge of the cutwater are rounded. 11. An impeller pump according to claim 7, wherein the cutwater is formed in both the body and the cover. 12. An impeller pump according to claim 11, wherein a portion of the cutwater formed in the body extends into a recess formed in the cover. 13. An impeller pump according to claim 11, wherein the cutwater formed in the cover is connected to a rib surrounding the support ring of the impeller. 14. An impeller pump comprising: a body and a cover assembled onto the body to form a housing, the body having a fluid inlet and a fluid outlet and an opening for receiving a rotating drive shaft, an impeller rotatably positioned in the housing with paddles at a periphery thereof, the impeller comprising: a sleeve with a central pocket formed therein for receiving a drive shaft, a hub surrounding the sleeve, a face seal carried in the hub, a circumferential support ring surrounding the hub, a plurality of radially extending paddles extending from the circumferential support ring, a top face wall lying substantially perpendicular to an axis of rotation of the impeller, and a plurality of curved impeller blades extending from a bottom side of the top face wall and between the hub and the circumferential support ring, the body and cover defining an annular space circumferentially extending around an interior of the housing for receiving the paddles of the impeller, the cover having a wall portion configured to enlarge the annular space in the housing through a portion of the circumference of the annular space. 15. A pump impeller according to claim 14, including a top face wall lying substantially perpendicular to an axis of rotation of the impeller terminating radially at the circumferential support ring.
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이 특허에 인용된 특허 (11)
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