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Title:
ELASTIC PISTON CONNECTING STRUCTURE, AND HIGH-PRESSURE PUMPING SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/179199
Kind Code:
A1
Abstract:
An elastic piston connecting structure, comprising an elastic piston body (10) which is received in the wall of a piston cavity, and a connecting component (20) fixedly connected to a push rod. The end wall at the rear side of the piston body (10) is sunken inwards to form a blind hole (11). The connecting component (20) is provided with a connecting rod (21) embedded into the blind hole, and the periphery of the connecting rod (21) is provided with a flange (22) which protrudes outwards in the radial direction. The outer diameter of the flange (22) is greater than the inner diameter of the blind hole (11). The flange (22) is snap-fitted into the blind hole (11) to form an inverted-snap fit structure, so that the connecting component (20) and the piston body (10) are stably connected, and connecting and assembly are easy and efficient. Also provided are a high-pressure pumping system having the elastic piston connecting structure, and a high-pressure pumping method.

Inventors:
LUO, Fengling (Longshan 7th Road, Xiangshui River Industrial Park Daya Bay Distric, Huizhou Guangdong 3, 516083, CN)
Application Number:
CN2018/125089
Publication Date:
September 26, 2019
Filing Date:
December 28, 2018
Export Citation:
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Assignee:
HUIZHOU HYDRO CARESYS MEDICAL CO., LTD. (Longshan 7th Road, Xiangshui River Industrial Park Daya Bay Distric, Huizhou Guangdong 3, 516083, CN)
International Classes:
A61M5/315; F04B53/14
Foreign References:
CN108591047A2018-09-28
CN208123056U2018-11-20
US20030060759A12003-03-27
CN1118273A1996-03-13
CN204840528U2015-12-09
EP0824924A11998-02-25
US20150073351A12015-03-12
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (Room 1508, Huihua Commercial & Trade Building No.80 Xian Lie Zhong Road, Yuexiu Distric, Guangzhou Guangdong 0, 510070, CN)
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