Title:
FLEXIBLE SHAFT STRUCTURE FOR ISOLATING WEAR PARTICLES BY MEANS OF PERFUSION
Document Type and Number:
WIPO Patent Application WO/2021/073075
Kind Code:
A1
Abstract:
Disclosed is a flexible shaft structure for isolating wear particles by means of perfusion. The flexible shaft structure comprises a flexible transmission shaft (1), a near-end fixing frame (8) is arranged at one end of the flexible transmission shaft (1), a far-end fixing frame (9) is arranged at the other end of the flexible transmission shaft, a constraint isolation component and an outer sheath tube (5) are arranged outside the flexible transmission shaft (1), and the constraint isolation component sequentially comprises an inner constraint layer (2), an isolation layer (3) and an outer constraint layer (4) from inside to outside; a perfusion inflow annular cavity (7) is provided among the outer constraint layer (4), the outer sheath tube (5) and the isolation layer (3), and a static sealing inner cavity (6) is provided among the inner constraint layer (2), the isolation layer (3) and the flexible transmission shaft (1); the near-end fixing frame (8) is provided with a perfusion inlet pipeline (11) and a perfusion exhaust pipeline (12), the perfusion inlet pipeline (11) is in communication with the perfusion inflow annular cavity (7), and the perfusion exhaust pipeline (12) is in communication with the static sealing inner cavity (6); and the far-end fixing frame (9) is provided with a perfusion isolation cavity (10). The structure can effectively isolate generated wear particles, improve the stability and consistency of the pouring flow of a product, and solve the problems of vibration and noise of a flexible shaft under high-speed rotation.
Inventors:
ZHENG QIWEN (CN)
TANG ZHIRONG (CN)
TANG ZHIRONG (CN)
Application Number:
PCT/CN2020/089427
Publication Date:
April 22, 2021
Filing Date:
May 09, 2020
Export Citation:
Assignee:
FORQALY MEDICAL SHANGHAI CO LTD (CN)
International Classes:
F16C1/24
Domestic Patent References:
| WO2018130978A1 | 2018-07-19 |
Foreign References:
| CN110478547A | 2019-11-22 | |||
| CN109432572A | 2019-03-08 | |||
| CN106512117A | 2017-03-22 | |||
| CN102711860A | 2012-10-03 | |||
| US20110313286A1 | 2011-12-22 |
Attorney, Agent or Firm:
SHANGHAI KELV PATENT AGENCY, LLP (CN)
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