Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Toru Sakatani

Akio Sugimoto

Yasuaki Yamane

Kazuhisa Fukutani

Kazuo Yamaguchi

Ichiro Yamagiwa

Yasumasa Kimura

Hiroki Ueda

Sayaka Yamada

Koichi Honke

Toshimitsu Tanaka

Eiji Kanki

Hideo Utsuno

To provide a kneading screw which can reduce such a phenomenon that a disproportional load is imposed onto a shaft of the kneading screw without degrading kneading performance of the kneading screw, a twin screw extruder with the kneading screw, and a method for assembling the kneading screw. In the kneading screw, each of the kneading rotor segments has at least one of a spiral kneading blade or a kneading blade extending in parallel with the axial direction, and is incorporated in the kneading screw such that top blade portions of the kneading blades at the adjacent ends of the kneading rotor segments adjacent to each other in the axial direction of the kneading screw are shifted in phase to each other, and such that the top blade portions of the kneading blades at the respective central positions in the axial direction of the adjacent kneading rotor segments are shifted larger in phase than the case where the top blade portions of the adjacent ends of the adjacent kneading rotor segments are equal in phase to each other.

Kneading screw, twin screw extruder, and method for assembling kneading screw

A lubricating liquid separator which can damp compressor pulsation noise effectively and improve the lubricating liquid separating performance without greatly enlarging the size of the separator itself. A demister having a sound absorbing performance is disposed on an outer periphery of a partition plate. Compressed gas which enters the interior of a housing through a compressed gas inlet port flows as rotating flow in a flow path between the partition plate and a portion of a side wall of the housing opposed to the partition plate. Pressure pulsation of the compressed gas is diminished by the demister, and a compressor pulsation noise by the rotating flow of the compressed gas is diminished by the sound absorption of the demister. Further, with the demister, reflection of the compressed gas at a wall surface of the partition plate is suppressed, and scattering of lubricating liquid separated from the compressed gas is suppressed.

Lubricating liquid separator

A perforated soundproof structure is formed by oppositely arranging an external plateand an internal platehaving a number of through-holes. The board thickness, hole diameter and open area ratio of the internal plateare set to satisfy design conditions to give rise to a viscous effect in the air passing through the through-holes, and the design conditions are set so that the frequency bandwidth to attain an absorption coefficient of 0.3 or more is 10% or more of the resonance frequency.

Perforated soundproof structure and method of manufacturing the same

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Kobe, Japan

Toru Sakatani