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Impeller with rotor blades for centrifugal pumps

A centrifugal pump and impeller technology, which is applied to the components of the pumping device for elastic fluid, the pump, the pump element, etc., can solve the problems of affecting the tightness of the bolts, easy misalignment of the blades, damage of the impeller, etc. Performance and efficiency, smooth flow and pump performance, effect of high hydraulic efficiency

Active Publication Date: 2021-12-10
IHC荷兰知识产权有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impeller disclosed in US 2,262,039 has a major disadvantage of impeller breakage due to the presence of the leading edge vortex which will have a large impact on the leading edge of the blades as well as some other parts of the pump
Moreover, the vanes themselves are prone to misalignment when the object strikes several times, which affects the tightness of the bolts, and this can create serious problems in the operation of pumps with such vanes

Method used

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  • Impeller with rotor blades for centrifugal pumps
  • Impeller with rotor blades for centrifugal pumps
  • Impeller with rotor blades for centrifugal pumps

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 is a front sectional view of the centrifugal pump 1, figure 2 is along figure 1 A side sectional view taken along line II–II in .

[0034] The centrifugal pump 1 includes a pump housing 2 shaped like a volute (screw casing). The pump housing 2 has a peripheral wall 3 and a spout-shaped outlet 5 connected tangentially to the peripheral wall 3 of the pump housing 2 . The junction between the inner surface of the tangential outlet 5 and the inner surface of the peripheral wall 3 of the pump housing 2 defines a so-called cutwater 4 . The pump housing 2 also has an axial inlet 6 .

[0035]A rotor 7 is attached in the pump housing 2 such that the rotor 7 is rotatable about an axial axis of rotation A. As shown in FIG. The rotor 7 has a central lug 9 which can be fastened to a drive shaft (not shown). A shaft guard 11 extends from the central boss 9 . The shaft shroud 11 forms a first wall or casing for delimiting the flow within the rotor 7 . The rotor has...

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PUM

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Abstract

An impeller for a centrifugal pump includes a rotor; a shaft shield connected to the rotor and having an axial supply; a suction shield connected to the rotor and axially set to be spaced apart from the shaft shield; Between the suction shrouds and connected to the multiple blades of the rotor. Each blade comprises a leading edge and a trailing edge connected between the shaft shroud and the suction shroud, and a suction side and a pressure side, wherein, on the suction side and the pressure side, each blade cross-section is at the leading edge It is thicker near and tapers to a thinner cross-section near the trailing edge. Each blade is connected to the suction shroud at a leading edge, the blades having a wide fillet providing a curvature along the leading edge towards the suction shroud.

Description

Background technique [0001] Dredging is one of the most demanding industries regarding the wear and tear of all equipment in direct contact with the dredged mixture stream. This includes the mud pump, which is usually a centrifugal pump, as well as the internal components of the pump. The pump impeller is particularly prone to wear because it encounters high speed differences between the mixture and the impeller itself. Since the pump is the heart of the dredging process, the dredge pump has a great influence on the productivity of the entire dredging vessel. [0002] The impeller of early dredge pump designs consisted of two flat shrouds with simple blades extending between them. Each blade is bent into a single curve, most commonly a circle. Vane angles are calculated to estimate the pump's best efficiency point and typical operating conditions. The shape of the blade is formed by simple plate-like sides of uniform thickness along the length of the blade. These blades a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/24F04D7/04F04D29/22
CPCF04D7/04F04D29/2222F04D29/242F05D2230/30F05D2240/301F05D2240/303E02F3/8833E02F3/90E02F5/006E02F9/20F04D29/22
Inventor E·A·蒙茨H·H·布格达奇
Owner IHC荷兰知识产权有限公司