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Patent Searching and Data


Title:
NON-PULSATING PUMP
Document Type and Number:
WIPO Patent Application WO/2019/188184
Kind Code:
A1
Abstract:
When a pipe pressure P_L of a common discharge pipe (36) during an independent discharge step in which only one reciprocating pump among a plurality of reciprocating pumps (20, 40) discharges a fluid to the common discharge pipe (36) differs from internal pressures P_OR1, P_OR2 in pump chambers (220, 240) of the respective reciprocating pumps (20, 40) at discharge step start point angles θ2, θ5 that are determined to correspond to a cam angle θ of a cam mechanism (16) with respect to the predetermined reciprocating pumps (20, 40), a stroke adjustment mechanism (80) adjusts, on the basis of a pressure difference ΔP therebetween, effective stroke lengths of cross heads (28, 48) connected to plungers (26, 46) of the predetermined reciprocating pumps (20, 40) so that the time at which the internal pressures P_OR1, P_OR2 in the pump chambers (220, 240) reach the pipe pressure P_L is at the discharge step start point angles θ2, θ5.

Inventors:
MURAKOSHI Fusao (NIKKISO CO. LTD., 2-16-2, Noguchi-cho, Higashimurayama-sh, Tokyo 20, 〒1898520, JP)
Application Number:
JP2019/009665
Publication Date:
October 03, 2019
Filing Date:
March 11, 2019
Export Citation:
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Assignee:
NIKKISO CO., LTD. (4-20-3, Ebisu Shibuya-k, Tokyo 22, 〒1506022, JP)
International Classes:
F04B11/00; F04B13/00
Domestic Patent References:
WO2018042746A12018-03-08
Foreign References:
JPS51122801A1976-10-27
JP2007327449A2007-12-20
JPS5970085U1984-05-12
JP2004232616A2004-08-19
JPS6371586A1988-03-31
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (1-34-12, Kichijoji-Honcho Musashino-sh, Tokyo 04, 〒1800004, JP)
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