Title:
Pulsating pump
Document Type and Number:
Japanese Patent JP6305480
Kind Code:
B2
Abstract:
A non-pulsation pump (100) is provided with: a cam mechanism (16) that converts the rotational motion of a shared motor (11) into reciprocal motion having a prescribed phase difference; a plurality of cross heads (28, 48) that make reciprocal motion with a prescribed phase difference through the cam mechanism (16); and a plurality of reciprocating pumps (20, 40) that are driven with a prescribed phase difference and that include plungers (26, 46) connected to the cross heads (28, 48), wherein the total discharge flowrate toward a shared discharge pipe 36 is kept constant. This non-pulsation pump includes a preliminary compression step for moving the plungers (26, 46) of the reciprocating pumps (20, 40) to a discharge side by very small amounts before a discharging step but after a suction step, and has a stroke adjustment mechanism (80) for adjusting the effective stroke length of the plunger (26) in the preliminary compression step. Thus, generation of pulsation can be suppressed even when the set pressure changes.
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Inventors:
Murakoshi Tomizo
Hideaki Sato
Hideaki Sato
Application Number:
JP2016170481A
Publication Date:
April 04, 2018
Filing Date:
September 01, 2016
Export Citation:
Assignee:
NIKKISO CO.,LTD.
International Classes:
F04B11/00; F04B9/04; F04B13/00
Domestic Patent References:
| JP51061003A | ||||
| JP7119628A | ||||
| JP56030341U |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office
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