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Blade of axial flow impeller and axial flow impeller

A technology of axial flow and vane, which is applied in the direction of axial flow pumps, supporting elements of vanes, components of pumping devices for elastic fluids, etc., to achieve the effects of large pumping mass flow rate, easy manufacture, and low power consumption

Active Publication Date: 2014-11-26
METSO OUTOTEC (FINLAND) OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is still a need for better axial flow impellers that have low energy consumption and simultaneously provide high pumping capacity and pumping efficiency

Method used

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  • Blade of axial flow impeller and axial flow impeller
  • Blade of axial flow impeller and axial flow impeller
  • Blade of axial flow impeller and axial flow impeller

Examples

Experimental program
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Embodiment Construction

[0029] Reference will now be made in detail to the embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0030] Figures 1 to 3 An axial impeller 1 is shown having three equally spaced blades 4 which are permanently or releasably connected to a central hub 2 or a rotatable shaft 3 . Although the illustrated embodiment has three blades, two, three, four or more blades 4 may be used according to the invention.

[0031] Figure 4 and 5 The profile of the blade 4 is shown in more detail. The blades 4 are formed from a substantially plate-like material, which makes their manufacture easy and economical. The blade 4 comprises a leading edge 5, a trailing edge 6, a tip 7 and a root 8 attachable to the central hub 2 of the impeller.

[0032] A straight first bend 9 extends along the blade 4 in a first direction and divides the blade into a first profile portion 10 and a second profile portion 11 adjacent the leading edge 5 . The first an...

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PUM

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Abstract

The invention relates to a blade (4) of an axial flow impeller (1). Dimensioning rules for the blade (4) are presented: A = 0,2R; B = 0,2Wb; C = 0,2R; D = 0,2Wb;E = 0,5R; F = (0,1...0,2)R; G = 0,2Wb; H = 0,25R; I = 0,1R; J = 0,4R; K = 0,1Wb. The first angle alpha = 6º ± 1º, the second angle alpha2 = 8º ± 1º and the third angle alpha 3 = 19º to 25º. R is the lengthwise dimension from the axis of rotation (x) of the impeller to the tip (7) of the blade (4). Width Wb is the widthwise dimension of the blade perpendicularly to the lengthwise direction. The invention also relates to an axial flow impeller (1) having said blades (4).

Description

technical field [0001] The invention relates to blades of an axial flow impeller and also to an axial flow impeller comprising said blades. Impellers are widely used in metallurgical and chemical processing in agitators and reactors for stirring, mixing and stirring liquids and slurries, suspensions of solids and liquids. Axial flow impellers, also known as hydrofoil impellers, produce an axial flow of liquid. Background technique [0002] Axial impellers are known, for example, from the following documents WO 2010 / 103172 A1, WO 2010 / 059572 A1 and EP0465636 B1. The blades of an axial impeller can be connected to the central hub of the impeller. The impeller consists of two or more such blades. The blades are formed from a substantially plate-like material. The blade includes a leading edge, a trailing edge, a tip and a root attachable to a central hub of the blade. A straight first bend extends along the blade in a first direction and divides the blade into a first prof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F7/00B01F7/18B01F7/22B01F7/04B01F7/06F01D5/14B01F27/71B01F27/91
CPCB01F2215/0422B01F7/00375B01F2215/0409B01F2215/0431F05D2250/70F04D29/181B01F27/1134F01D5/141B01F27/113B01F27/80B01F27/91F04D3/00
Inventor 夏吉良N·泰利T·赫尔斯
Owner METSO OUTOTEC (FINLAND) OY