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A kind of centrifugal pump volute processing method

A processing method and centrifugal pump technology, which is applied in the field of centrifugal pump volute processing, can solve the problems that the processing accuracy cannot be applied to the aerospace field, and achieve the effect of improving the precision of the volute

Active Publication Date: 2021-10-26
HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a centrifugal pump volute processing method to solve the technical problem that the casting volute in the prior art cannot be applied to the aerospace field because of its own machining accuracy

Method used

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  • A kind of centrifugal pump volute processing method
  • A kind of centrifugal pump volute processing method
  • A kind of centrifugal pump volute processing method

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specific Embodiment

[0036] The volute processing method provided in this embodiment is used for processing to obtain such as Figure 1 to Figure 4 The centrifugal pump volute shown has a front end face inner hole 2 and a back end face inner hole 4, the inner holes on both ends of the face are connected, and a sealing ring groove 8 is provided in the middle conduction section, and a corresponding There are mounting threads and outlet threads for normal assembly of the volute. For the centrifugal pump volute, the inner hole 2 on the front face is the impeller hole, which is used to install the impeller, and the circumferential hole wall of the impeller hole forms the spiral part of the flow channel.

[0037] The embodiment of centrifugal pump volute processing method provided by the present invention comprises the following steps:

[0038] Step 1, using a CNC milling machine to process the shape of the volute on the blank.

[0039] Specifically, the material is cut first, and the size of the blan...

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Abstract

The invention relates to a method for processing a volute of a centrifugal pump, comprising the following steps: using a numerical control milling machine to process the shape of the volute on a blank; Part, use CNC lathe to process the diffuser part of the volute flow channel, the diffuser part and the spiral part form a partition tongue; use the electric spark process to remove the remaining material at the transition connection between the spiral part of the volute flow channel and the diffuser part , to get a complete volute flow channel; renovation to get centrifugal pump volute. The spiral part is processed by CNC milling machine, and the diffusion part is processed by CNC lathe. Corresponding to the transition position between the spiral part and the diffusion part with complex curved surface structure, the EDM process is used to process the high-precision volute on the blank. The flow channel meets the application requirements of high-precision places.

Description

technical field [0001] The invention relates to a method for processing a centrifugal pump volute. Background technique [0002] With the development of aerospace technology, especially the development of space station technology, low-specific-speed high-speed centrifugal pumps have been more and more widely used because of their high reliability, good adaptability to working media, and small size and light weight. Low specific speed and high speed centrifugal pumps used in the aerospace field have high requirements on the consistency of performance parameters, which requires continuous breakthroughs in process methods to achieve high dimensional accuracy, contour accuracy and good surface roughness of flow-passing parts to ensure product performance and adaptability. Complex space environment. [0003] The centrifugal pump volute has high requirements on the smoothness of the flow channel, and it usually needs to be pre-designed in three-dimensional drawing software. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 王向前侯涛刘伟赵洪锋张红涛李海英韩志英韩正杰王姗姗董品行
Owner HENAN AEROSPACE HYDRAULIC & PNEUMATIC TECH