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Finger pump

A finger and blade technology, applied in the field of finger pump, can solve the problems of rapid wear of the deflector and blade of the immersion pump, and achieve the effect of small hydraulic characteristics

Active Publication Date: 2019-08-30
KSB AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem with this immersion pump is that the deflectors and blades wear out quickly because together they have to have a cutting effect

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0032] figure 1 The pump shown in includes an impeller 1 with two blades 2 on a vertical axis X, X′. The impeller rotates in the direction of arrow F driven by the output shaft of a motor (not shown). The blades 2 are inclined with respect to the axes X, X'. The impeller 1 is surrounded by a volute 3 . The liquid to be delivered enters the volute 3 through the suction port at the bottom of the pump. The fingers 4 are fixed on the volute 3 . A groove 5 is machined into the volute 3 and extends from the space between the impeller 1 and the volute 3 to the interior of the volute 3 . The discharge pipe leaves the volute 3 from the lip.

[0033] The finger 4 has a convex upper surface 8, most of which is 0.3 mm from the blade 2 when the blade 2 passes in front of the finger 4 . Depending on the rotational position of the blade 2 , a tangent 11 to the upper surface 8 at its furthest downstream point forms an angle β of 90° with a tangent 12 to the blade 2 at a point vertically...

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PUM

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Abstract

In this pump, the angle between the imaginary tangent plane to the lip and passing through the axis and an imaginary straight line, perpendicular to the axis and passing through the point furthest from the axis of intersection of the upper surface of a finger with the lateral leading surface of this finger, is between 110 and 140 degrees.

Description

technical field [0001] French patent 1 511 657 describes a pump comprising an impeller with at least one blade. The impeller is surrounded by a volute. A deflector protruding towards the inside of the pump is fixed to the volute upstream of a groove machined in the volute in the direction of rotation of the impeller. The deflector has a surface opposite the blade, the surface being at an immersion distance therefrom. Background technique [0002] Deflection pumps are known from documents US 2003 / 215331 and US 2010 / 119365 as well as WO 2017 / 198509. [0003] The problem with this immersion pump is in particular the rapid wear of the deflectors and blades, since together they must have a cutting effect. Contents of the invention [0004] The present invention overcomes this problem by using pumps that only occasionally dip eg wet wipes outside the pumps, without having to cut them beforehand. [0005] A pump according to the invention comprises: [0006] - an impeller ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D7/04
CPCF04D29/426F04D7/045F04D29/4293F04D29/445F05D2250/52F04D1/04
Inventor N·佩蒂特S·冈萨雷斯M·卡明斯基C·雅格
Owner KSB AG
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