Title:
液体の混合のためのポンプ搬送方法及び系
Document Type and Number:
Japanese Patent JP4142163
Kind Code:
B2
Abstract:
The present invention is a pumping system which mixes liquids with a well-controlled proportioning and flow rate. The pumping system according to the invention comprises a liquid mixing device (MX) placed upstream from a pump (P). The liquids are taken from vessels (RA, RB), cyclically introduced, in a determined proportion, in a mixing chamber (9) through alternate opening of on-off solenoid valves (EVA, EVB). The system is controlled at the input by using a damping means such as bellows (11A, 11B) in antechambers (8A, 8B) in order to avoid the effects of velocity discontinuities at the time of the opening and of the closing of the valves. The delivery of pump (P) is controlled at the input as well as at the discharge end. The system may be used for liquid chromatography plants.
Inventors:
Francois Clard
Andre Luno
Andre Luno
Application Number:
JP25130998A
Publication Date:
August 27, 2008
Filing Date:
September 04, 1998
Export Citation:
Assignee:
ENI S.P.A.
Francois Clard
Francois Clard
International Classes:
F04B13/02; G01N1/36; F04B11/00; F04B13/00; F04B23/02; F04B23/06; F04B49/06; F16K47/02; G01N30/32
Domestic Patent References:
| JP57177485A | ||||
| JP60222570A | ||||
| JP53141698A | ||||
| JP52133294A | ||||
| JP1232188A | ||||
| JP8284809A | ||||
| JP55122149A |
Foreign References:
| US5755561 | ||||
| US2811925 |
Attorney, Agent or Firm:
Akio Miyazaki
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito