A dynamic balancing tool for a permanent magnet shaftless impeller
An impeller and shaftless technology, which is applied in the field of impeller experimental tooling, can solve the problems of fixing, inconvenient rotation of the impeller rotor, and difficult dynamic balance testing experiments, etc., achieving the effect of convenient and fast installation, ensuring effectiveness and accuracy
Active Publication Date: 2018-07-20
HANGTIANTAIXIN TECH CO LTD
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Problems solved by technology
[0003] However, since the impeller rotor of the artificial assisted heart is usually supported by magnetic liquid suspension technology, that is, compared with the general centrifugal pump, the impeller rotor cancels the mechanical shaft and is a shaftless structure, and the impeller rotor cannot pass through pins, Fasteners such as screws are fixed on some kind of shaft body, which makes the fixing of the impeller rotor and the rotation with the fixing parts very inconvenient, and it is difficult to carry out accurate and effective dynamic balance testing experiments
Method used
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Embodiment 1
[0025] Such as figure 1 As shown, the dynamic balancing tool of the permanent magnet shaftless impeller provided in the first embodiment includes the tool shaft 1 , the limit magnetic core 2 and the limit pressure plate 3 . The limiting magnetic core 2 is cylindrical, and a magnetic core through hole is arranged in the middle thereof. The aperture of the magnetic core through hole is adapted to the shaft diameter of the tooling shaft 1 , and the limiting magnetic core 2 is sleeved on the tooling shaft 1 . The limiting pressing plate 3 is disc-shaped, and the limiting pressing plate 3 is plugged and matched with the tooling shaft 1 . An impeller rotor 4 is arranged inside the artificial assisted heart, and one or more pieces of magnetic steel 41 are fixed on the impeller rotor 4 . In specific use, the impeller rotor 4 is nested on the tooling shaft 1 first, and then the impeller rotor is limited and fixed by the limiting pressure plate 3 . The magnetic steel 41 and the limiti...
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The invention discloses a dynamic balance tool for a permanent-magnet shaftless impeller, and belongs to the field of impeller experiment tools.The dynamic balance tool comprises a tool shaft, a limiting magnetic core and a limiting pressing plate; the tool shaft is used for being connected with an impeller rotor in a sleeved mode, the limiting magnetic core is used for preventing the impeller rotor from generating relative position leaping, the limiting magnetic core is fixed to the tool shaft, the limiting pressing plate is used for enabling the impeller rotor to be coaxially matched with the tool shaft, and the limiting pressing plate is in inserted fit with the tool shaft.According to the dynamic balance tool, fixation of the shaftless impeller rotor becomes convenient through an inherent magnetic field of the impeller rotor, and the effectiveness and the accuracy of an impeller rotor dynamic balance detection test are effectively guaranteed.
Description
technical field [0001] The invention relates to the field of impeller experimental tooling, in particular to a dynamic balancing tool for a permanent magnet shaftless impeller. Background technique [0002] Artificial assisted heart is a kind of blood pumping mechanism that uses biomechanical means to partially or completely replace the heart, and is a biomechanical device that maintains the state of systemic circulation. The power of this kind of biomechanical device usually comes from its impeller rotor. In order to ensure that the artificial assisted heart has a suitable flow rate, a high impeller rotor speed and a small pump volume cavity clearance, the impeller rotor needs to have a good dynamic balance effect. It can be seen that the dynamic balance effect has a crucial impact on the hemolysis parameters of the artificial assisted heart. In the process of measuring the dynamic balance effect, it is usually necessary to make the rotor under test rotate around its cente...
Claims
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IPC IPC(8): G01M1/02G01M1/16
CPCG01M1/02G01M1/16
Inventor 高航张文海姜洋刘志伟郝振辉
Owner HANGTIANTAIXIN TECH CO LTD