Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1990-07-12
1992-08-04
Dawson, Robert A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210 86, 210 94, 210143, 210513, 222 23, 222 52, 222 95, 222 96, 222103, 222214, B01D 2130
Patent
active
051356465
ABSTRACT:
A liquid separator of the present invention comprises a first plate member, a second plate member forming a receiving portion between it and the first plate member for receiving a flexible liquid container including liquid separated into the upper liquid layer and the lower liquid layer, and pushing means for pushing the second plate member toward the first plate member, said pushing means automatically pushing the second plate member with gradually decreasing pressure after starting the discharge of the upper liquid layer from the flexible liquid container. Therefore, the upper liquid layer can be discharged from the flexible liquid container without disturbing the boundary between the upper and lower liquid layers in the flexible liquid container. Thus, the upper liquid layer can automatically and efficiently be taken out from the flexible liquid container without mixing with the lower liquid layer and without any complicated and troublesome manipulation. If the discharge of the upper liquid layer is automatically stopped with a sensor detecting the boundary between the upper and lower liquid layers, it is possible to decrease errors of the sensor caused by the disturbance of the boundary.
REFERENCES:
patent: 4350585 (1982-09-01), Johansson et al.
patent: 4663032 (1987-05-01), Loos et al.
patent: 4976851 (1990-12-01), Tanokura et al.
patent: 5045185 (1991-09-01), Ohnaka et al.
patent: 5061451 (1991-10-01), Ganshirt et al.
Furuya Akihiko
Inaba Fumiaki
Kobayashi Susumu
Tanokura Nobukazu
Dawson Robert A.
Kim Sun Uk
Terumo Kabushiki Kaisha
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