Title:
NONPULSATING PUMP
Document Type and Number:
Japanese Patent JP2018035761
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To restrict occurrence of pulsation by a simple method even if a set pressure is varied.SOLUTION: This invention relates to a nonpulsating pump 100 comprising a cam mechanism 16 for converting a rotary motion of a common motor 11 into a reciprocating motion of predetermined phase difference; several cross heads 28, 48 reciprocated under the predetermined phase difference by the cam mechanism 16; several reciprocating pumps 20, 40 including plungers 26, 46 connected to the cross heads 28, 48 and driving at a predetermined phase difference, and keeping a constant total discharging flow rate flowing out at a common discharging pipe 36. This pump includes a stroke adjustment mechanism 80 including a preliminary compression stroke for moving the plungers 26, 46 of the reciprocating pumps 20, 40 after intake stroke and before discharging stroke only by a minimum amount so as to adjust an effective stroke length of the plunger 26 during the preliminary compression stroke.SELECTED DRAWING: Figure 1
Inventors:
MURAKOSHI TOMIO
SATO HIDEAKI
SATO HIDEAKI
Application Number:
JP2016170481A
Publication Date:
March 08, 2018
Filing Date:
September 01, 2016
Export Citation:
Assignee:
NIKKISO CO LTD
International Classes:
F04B11/00; F04B9/04; F04B13/00
Domestic Patent References:
| JPS5161003A | 1976-05-27 | |||
| JPS5161003A | 1976-05-27 | |||
| JPH07119628A | 1995-05-09 | |||
| JPS5630341U | 1981-03-24 | |||
| JPH07119628A | 1995-05-09 | |||
| JPS5630341U | 1981-03-24 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office