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Small flow drilling centrifugal pump impeller fabricating process and centrifugal pump impeller thereof

A centrifugal pump impeller and manufacturing method technology, applied to the parts, manufacturing tools, boring/drilling and other directions of the pumping device used for elastic fluid, can solve the problem that the accuracy of the blade profile and the accuracy of small flow centrifugal pumps cannot be guaranteed Low cost, complex processing technology and other issues, to achieve the effect of low cost, simple processing and manufacturing methods, and meet technical requirements

Inactive Publication Date: 2009-07-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing small-flow centrifugal pump impeller manufacturing method that cannot guarantee the precision of the profile of the blade, complex processing technology, and high cost, and to overcome the low precision of the existing small-flow centrifugal pump and cannot ideally meet the technical requirements Insufficient, the present invention provides a kind of manufacturing method of the impeller of small-flow drilling centrifugal pump with simple and convenient processing and manufacturing method and low cost, and provides a small-flow centrifugal pump impeller with high precision and can ideally meet the technical requirements of small-flow impeller

Method used

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  • Small flow drilling centrifugal pump impeller fabricating process and centrifugal pump impeller thereof
  • Small flow drilling centrifugal pump impeller fabricating process and centrifugal pump impeller thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] refer to figure 1 , figure 2 , a method for manufacturing the impeller of a small-flow borehole centrifugal pump. First, according to the size of the performance parameters of the centrifugal pump, the size of the flow passage area of ​​the impeller 1 (ie, the impeller body), the size of the outer diameter of the impeller, and the number of impeller blades are calculated. The manufacturing method comprises the following steps: (1), selecting the processing blank to be an equal circle blank, and the size of the outer circle of the blank is determined by the size of the outer diameter of the impeller; (2), adopting the method of mechanical processing on the blank Drilling forms the flow channel 2, the diameter of the flow channel 2 is determined by the flow area of ​​the impeller flow channel, and the number of flow channels 2 is determined by the number of impeller blades.

[0018] The outlet angle of the impeller blade is calculated according to the performance parame...

Embodiment 2

[0022] refer to figure 1 , figure 2 , a small flow bored centrifugal pump impeller, including an impeller body 1, a bored flow channel 2 is arranged on the impeller body 1, and the drilled flow channel 2 is an inclined channel. The drilled flow channel 2 is a circular hole channel.

[0023] The manufacturing method of this embodiment is the same as that of Embodiment 1.

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Abstract

Disclosed is an impeller manufacturing method of a small capacity centrifugal pump. Calculate the area of the impeller flow passage, the size of the impeller outer diameter and the quantity of the impeller blade according to the performance parameter of the centrifugal pump. The invention is characterized in that drill a hole on the semifinished product piece to form flow passages by using the mechanical processing method; the diameter of the flow passage and the quantity of the flow passage are determined by the flow capacity. The invention has the advantages that the mechanical processing method is simple and convenient with low cost; the surface roughness and the precision of the flow passage is high; the insufficiency of small capacity impeller made by welding and casting method is overcame; the invention can ideally meet the technical requirements of the small capacity impeller.

Description

(1) Technical field [0001] The invention relates to a manufacturing method of a small-flow drilling centrifugal pump impeller and the impeller of the centrifugal pump. (2) Background technology [0002] The flow rate of the centrifugal pump is directly proportional to the flow area of ​​the impeller, the flow area is large, the flow rate is large; otherwise the flow rate is small. The flow area of ​​the impeller is directly proportional to the width of the impeller flow channel. The larger the flow channel width, the larger the flow area, and vice versa. The width of the impeller channel of the small flow centrifugal pump is relatively narrow, and most of the impellers of the centrifugal pump are processed and manufactured by casting. However, due to the casting method, it is difficult to cast the impeller with small flow and narrow flow channel. For example, the width of the flow channel cannot be cast in the range of 1-3mm. In order to manufacture such an impeller, weldi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B41/12F04D29/24
Inventor 牟介刚张生昌郑水华邓鸿英曹万猛邵云锋牟成琪
Owner ZHEJIANG UNIV OF TECH