Invention Grant
- Patent Title: Non-pulsation pump having stroke adjustment mechanism
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Application No.: US16327167Application Date: 2017-04-12
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Publication No.: US10890166B2Publication Date: 2021-01-12
- Inventor: Fusao Murakoshi , Hideaki Sato
- Applicant: NIKKISO CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: NIKKISO CO., LTD.
- Current Assignee: NIKKISO CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2016-170481 20160901
- International Application: PCT/JP2017/014933 WO 20170412
- International Announcement: WO2018/042746 WO 20180308
- Main IPC: F04B43/02
- IPC: F04B43/02 ; F04B9/04 ; F04B13/00 ; F04B11/00

Abstract:
A non-pulsation pump is provided with: a cam mechanism that converts the rotational motion of a shared motor into reciprocal motion having a prescribed phase difference; a plurality of cross heads that make reciprocal motion with a prescribed phase difference through the cam mechanism; and a plurality of reciprocating pumps that are driven with a prescribed phase difference and that include plungers connected to the cross heads, wherein the total discharge flowrate toward a shared discharge pipe is kept constant. This non-pulsation pump includes a preliminary compression step for moving the plungers of the reciprocating pumps to a discharge side by very small amounts before a discharging step but after a suction step, and has a stroke adjustment mechanism for adjusting the effective stroke length of the plunger in the preliminary compression step. Thus, generation of pulsation can be suppressed even when the set pressure changes.
Public/Granted literature
- US20190195208A1 NON-PULSATION PUMP Public/Granted day:2019-06-27
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