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1. (WO2018141235) NOVEL CONSTANT-PRESSURE CONSTANT-SPEED PUMP

Pub. No.:    WO/2018/141235    International Application No.:    PCT/CN2018/074503
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Tue Jan 30 00:59:59 CET 2018
IPC: F04B 13/00
Applicants: JIANGSU TOUCHUANG SCIENTIFIC RESEARCH INSTRUMENT CO., LTD.
江苏拓创科研仪器有限公司
Inventors: TAI, Liulong
邰刘龙
FEI, Xiaoli
费小莉
Title: NOVEL CONSTANT-PRESSURE CONSTANT-SPEED PUMP
Abstract:
The invention provides a novel constant-pressure constant-speed pump. The novel constant-pressure constant-speed pump comprises at least one set of pressurizing assemblies, a drive assembly connected with the pressurizing assemblies, and a liquid guiding assembly. The pressurizing assemblies and the drive assembly are connected with a rack (1). Each pressurizing assembly comprises a cylinder body (2), a plunger rod (3), a pressure cap (4) and a piston mechanism, wherein the plunger rod (3) is in a clearance fit with the corresponding cylinder body (2). The liquid guiding assembly comprises a first pneumatic valve (6), a second pneumatic valve (7), a first joint (8), a second joint (9), a third joint (10) and a fourth joint (11). The novel constant-pressure constant-speed pump has the beneficial effects that cylinder body can be mounted more conveniently and fast, the sealing performance of the pump is improved, and the safety condition of a pressure container under high-pressure liquid can be tested.