Title:
SEAL RING
Document Type and Number:
WIPO Patent Application WO/2011/021273
Kind Code:
A1
Abstract:
Seal rings can keep the inside of a cylinder (1) of a screw extruder at high temperature and high pressure to suppress a variation in the pressure in the cylinder (1).
Special seal rings (300) rotatably integrally mounted, in a cylinder (1) of a screw extruder, to screw shafts (7) and suppressing delivery of an object being processed from the upstream to downstream portions in the cylinder (1). Lead grooves (317) extending in the screw shafts (7) in the axial direction thereof are formed in outer peripheral surfaces (316) facing the inner peripheral surface (1a) of the cylinder (1) with a predetermined gap therebetween. The lead grooves (317) disturb the flow of the object being processed passing through the gap between the outer peripheral surfaces (316) and the inner peripheral surface (1a) of the cylinder (1), and this stabilizes delivery resistance to suppress a variation in the pressure in the cylinder (1).
Inventors:
IKEDA Sadao (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
池田貞雄 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
池田貞雄 (〒71 愛知県豊田市トヨタ町１番地 トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
Application Number:
JP2009/064442
Publication Date:
February 24, 2011
Filing Date:
August 18, 2009
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
IKEDA Sadao (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
IKEDA Sadao (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
International Classes:
B29C47/40; B29B7/48; F16J15/44
Attorney, Agent or Firm:
HIRAKI Yusuke et al. (Kamiya-cho MT Bldg. 19F, 3-20 Toranomon 4-chome, Minato-k, Tokyo 01, 〒1050001, JP)