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Centrifugal pump impeller hydraulic grinding device

A centrifugal pump impeller, hydraulic technology, used in grinding machines, grinding/polishing equipment, machine tools suitable for grinding workpiece edges, etc. problems, to achieve the effect of well-protected space curved surface shape of impeller blades, satisfying design intent, and smooth and uniform surface

Active Publication Date: 2019-07-16
ZHEJIANG JIALI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to overcome the defects that the existing centrifugal pump impeller grinding method cannot fully polish the inner surface of the impeller and cannot fully protect the shape of the curved surface of the blade space, and provide a centrifugal pump impeller hydraulic grinding device

Method used

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  • Centrifugal pump impeller hydraulic grinding device
  • Centrifugal pump impeller hydraulic grinding device
  • Centrifugal pump impeller hydraulic grinding device

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0022] Such as Figure 1-2 The shown centrifugal pump impeller hydraulic grinding device includes:

[0023] A casing 4 for containing abrasive 6;

[0024] A grinding mandrel 15 for installing the impeller 14 and extending the impeller into the grinding agent 6;

[0025] A motor 23, its motor shaft 21 is connected with the grinding mandrel 15 for rotating with the impeller through a coupling device.

[0026] When the motor drives the impeller to rotate at a high speed, the polishing agent is continuously inhaled from the impeller inlet and flows out from the impeller outlet, and the flowing polishing agent achieves hydraulic polishing of all surfaces inside the impeller through impact and friction with the inner surface of the impeller.

[0027] The coupling device comprises a coupling disc 17 and a coupling joint 18, the coupling disc 17 is assemb...

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Abstract

The invention belongs to grinding techniques, discloses a hydraulic grinding device for a centrifugal pump impeller and aims to solve the problem that an existing centrifugal pump impeller grinding method fails in all-directional grinding of the inner surface of the impeller and fails in protection of intact blade spatial curved surface shapes. The hydraulic grinding device comprises a grinding agent container, a grinding mandrel and a motor, the grinding mandrel is used for mounting of the impeller and enables the impeller to stretch into the grinding agent, and a motor shaft is connected with the grinding mandrel through a coupling device to drive the impeller to rotate. When the motor drives the impeller to rotate at a high speed, the grinding agent is cyclically and continuously sucked from an impeller inlet and flows out from an impeller outlet, and hydraulic grinding of all inner surfaces of the impeller is realized by impact friction of the flowing grinding agent and the inner surfaces of the impeller.

Description

technical field [0001] The invention belongs to the polishing technology, in particular to a centrifugal pump impeller hydraulic polishing device. Background technique [0002] The roughness of the centrifugal pump impeller surface will directly affect the hydraulic efficiency of the centrifugal pump. The outer surface of the impeller can be machined to a good finish, but the inner surface of the impeller includes the inner side of the front cover, the inner side of the rear cover and the blades between the front and rear cover. Due to the spatial characteristics of its structure, the existing grinding method cannot Ensure that all the inner surfaces of the impellers are polished to the design requirements. The main problem is that the existing grinding machines cannot reach the inner depths and corners of the impellers so that these inner surfaces cannot be polished. Second, the existing grinding methods are easy to damage the impeller blades. The shape of the curved surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B31/00
CPCB24B31/003
Inventor 傅剑辉赵建林向永谭丁君
Owner ZHEJIANG JIALI TECH
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