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Propeller with ultra-thick blades for centrifugal impurities pump

A technology of impurity pumps and blades, which is applied to components, pumps, and pump components of pumping devices for elastic fluids, and can solve problems such as small passing capacity and lack of lift at the dead point, and achieve high-efficiency working areas and simple structures , Inhibit the effect of flow separation

Inactive Publication Date: 2005-01-19
LANSHEN GRP CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has defects such as small passing capacity of the pump, lack of a very steep characteristic curve, that is, a high head at the dead point, and saturated power characteristics and high efficiency levels.

Method used

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  • Propeller with ultra-thick blades for centrifugal impurities pump
  • Propeller with ultra-thick blades for centrifugal impurities pump
  • Propeller with ultra-thick blades for centrifugal impurities pump

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 1 As shown, it can be seen from the axial plane projection diagram of the impeller that the outlet width 1 is greater than the diameter of the passing solid particles, and from the outlet to the inlet, the axial width of the flow channel gradually increases to the inlet width 2; figure 2 As shown, it can be seen from the planar projection of the impeller that the outlet 3 of the interblade flow path should also be larger than the diameter of the solid particles, and the width of the interblade flow path also gradually and uniformly increases from the outlet 3 to the inlet 4 . In this way, the inter-leaf channel between the two blades shrinks evenly in two directions, so that the total area of ​​the inter-blade channel gradually decreases from the inlet to the outlet, and the ratio range is between 0.2≤K<1.0, K is the outlet area The ratio to the inlet area, K in this example is 0.2; the inlet radii of the blades at the front and rear cover plates are no...

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Abstract

A blade wheel with ultra-thick blades for centrifugal impurity pump features that the blades for blade wheel have the gradually increased thickness, so resulting in gradually decreased total area of flow channel and higher efficiency. Its advantages include high hydraulic efficiency and cavitating performance and simple structure.

Description

technical field [0001] The invention relates to an impeller for a pump, in particular to a centrifugal impurity pump, that is, the impeller of a centrifugal solid-liquid two-phase flow pump. Background technique [0002] For the centrifugal impurity pump with low specific speed, that is, small flow and high head, there are two obvious problems that limit its application. One is that the efficiency of this pump is relatively low; the other is that the shaft power of this pump varies with the flow rate. The prime mover (in the case of head reduction) is easy to cause damage. In order to avoid damaging the prime mover, it is necessary to increase the supporting power, which increases the cost and volume, and reduces the economy of the complete machine. [0003] Before the present invention was made, the inventors noticed that the prior art improved the above-mentioned drawbacks of this type of pump. For example, U.S. Patent US4235789 or Chinese Patent No. 86102777 proposed su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/24
Inventor 张克危陈斌
Owner LANSHEN GRP CORP LTD