Title:
INJECTOR AND CHEMICAL LIQUID PREPARATION APPARATUS HAVING THE SAME
Document Type and Number:
WIPO Patent Application WO/2006/132023
Kind Code:
A1
Abstract:
An injector capable of preventing contaminants from being mixed in a chemical liquid when sucking and discharging the chemical liquid and a chemical liquid preparation apparatus having the injector. The injector (1) comprises an injector body (11) having a cylinder (2) capable of reserving the chemical liquid, a piston (3) held in the cylinder (2), a ball screw (4) formed at the end part of the piston (3), and a drive motor (5) as a drive means for rotating the ball screw (4) and a duct (6) surrounding the injector body (11). The duct (6) comprises at tip part (6b) formed so that the cross sectional area of the inner peripheral surface thereof can be gradually reduced toward the tip side of the cylinder (2). A plurality of holes (6a, 6c) circumferentially tilted relative to the axial direction of the piston (3) are formed in the wall of the duct (6). An axial fan (7) as a suction means for sucking the contaminants is installed in the duct (6), and when the axial fan (7) is driven, an upward air flow occurs in the duct (6) and dust in the air present in the duct (6), abrasion powder of steel balls (4c) produced from the ball screw (4), and contaminants such as spattered lubricating oil are sucked to the upper part of the duct (6).
Inventors:
ONIKURA HIROMICHI (JP)
SATO TAKASHI (JP)
KONDO TSUTOMU (JP)
SATO TAKASHI (JP)
KONDO TSUTOMU (JP)
Application Number:
PCT/JP2006/306518
Publication Date:
December 14, 2006
Filing Date:
March 29, 2006
Export Citation:
Assignee:
JAPAN COMP ASSOCIATES INC (JP)
ONIKURA HIROMICHI (JP)
SATO TAKASHI (JP)
KONDO TSUTOMU (JP)
ONIKURA HIROMICHI (JP)
SATO TAKASHI (JP)
KONDO TSUTOMU (JP)
International Classes:
A61J3/00; F04B23/02
Foreign References:
| JPH1090126A | 1998-04-10 | |||
| JPH05253888A | 1993-10-05 | |||
| JPH0751385A | 1995-02-28 | |||
| JPH09225008A | 1997-09-02 | |||
| JPH08327507A | 1996-12-13 | |||
| JPH1033637A | 1998-02-10 | |||
| JPS5971755A | 1984-04-23 | |||
| JP2001509059A | 2001-07-10 |
Attorney, Agent or Firm:
Kato, Hisashi (Asaco-Hakata Bldg., 11-5, Hakataekihigashi
1-chome,, Hakata-ku, Fukuoka-sh, Fukuoka 13, JP)
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