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Patent Searching and Data


Title:
LIQUID SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2010014011
Kind Code:
A
Abstract:

To continuously and accurately supply a minute amount of liquid by a simple means.

When a chemical solution is injected into a measuring chamber 5 and it is detected that the amount of the chemical solution has reached the level of the prescribed amount by an optical sensor 9, the liquid supply device transmits a signal to a solenoid shutoff valve 4, and the injection of the chemical solution is stopped. Next, a piston rod 7b of an air pump 7 is rapidly lowered by action of an electromagnet, and thereby, an air pressure in an upper part of the measuring chamber 5 is increased, and the chemical solution in the measuring chamber 5 is delivered from a small hole 5a into a delivery pipe 8 in a lower part. After delivering the chemical solution, the piston rod 7b is raised by energizing force of the magnet, external air flows into a cylinder hole 7a from the small hole 5a or other holes not shown in the figure, and the pressure is returned to the atmosphere pressure. By repeating this action, the chemical solution in the prescribed amount is continuously supplied.


Inventors:
Sugi, Tokio
Yamaguchi, Seiichi
Application Number:
JP2008000174388
Publication Date:
January 21, 2010
Filing Date:
July 03, 2008
Export Citation:
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Assignee:
TOKYO KEISO CO LTD
UNITEX:KK
International Classes:
F04B13/00
Domestic Patent References:
JP2005195560A
JPH09288112A
Attorney, Agent or Firm:
日比谷 征彦