Miura Co., Ltd.

Miura Institute of Research & Developement Co., Ltd.

Hitoshi Shiraishi

Akinori Kawakami

Toshihiro Kayahara

Osamu Tanaka

Kazuhiro Tachino

Yuji Yoshinari

Tomoaki Tange

Yasuhiko Saito

Yasuo Ochi

Akiyoshi Kawahito

Nobuaki Yanagihara

Yasutomo Zenman

Yasutoshi Senoo

Norio Yasu

Yasuhiro Miyagama

Toshitaka Shigematsu

Yasuhito Mitsukami

Yukinori Tobisaka

Yasuhiro Kawakami

Takashi Yamada

Takamichi Ide

Satoru Takeda

Kenichiro Takematsu

Yasuhiro Miyagawa

A ballast water treatment device including a cylindrical filter () that is disposed in a casing () and filters and externally discharges ballast water having flowed inside, comprising: a filter rotating unit () that rotates the filter () around a shaft center of the filter (); a suction nozzle () that is disposed on the primary side of the filter () and opens toward the inner circumferential surface of the filter (); a waste rinsing water discharging unit () that externally discharges waste rinsing water sucked by the suction nozzle () from the casing (); a high-pressure fluid jet nozzle () that is disposed on the secondary side of the filter (), opens toward the outer circumferential surface of the filter (), and jets high-pressure fluid toward the filter (); and a high-pressure fluid supplying unit () that supplies high-pressure fluid to the high-pressure fluid jet nozzle (). The ballast water treatment device enables rinsing of the filter () to be performed efficiently and effectively, and achieves a simple structure and facilitated manufacture and maintenance.

Ballast water treatment device

Membrane deaerator apparatus

A multi-pipe once-through boiler having at least one row of a plurality of circumferentially arranged pipes on which a plurality of fins are arranged in such a manner that the fins are in contact with the flow of the combustion gas in a substantially parallel maner. Elements are provided for increasing the heat transfer effect, such as slits in the fins, or an inclined arrangement of the fins, or pipes without fins at the region near to the inlet of the combustion gas passageway, are provided. Furthermore, a heat insulating member for decreasing operational noise as well as a cleaner device for blow-cleaning the combustion gas passageway are provided.

Multi-pipe once-through type boiler

Growing community of inventors

Matsuyama, Japan

Hitoshi Shiraishi