Title:
ロータリジョイント
Document Type and Number:
Japanese Patent JP7191677
Kind Code:
B2
Abstract:
Each of the mechanical seal devices of a rotary joint includes a first shaft side seal ring attached to a shaft body and a first case slide seal ring attached to one side of the first shaft side seal ring as well as a second case side seal ring attached to a case body and a second shaft side seal ring attached to the second case side seal ring. A first communication flow passage is formed between a first sliding portion of the first seal rings and a second sliding portion of the second seal rings. A second communication flow passage is formed between the first sliding portion of a mechanical seal device disposed on one side in the axial direction and the second sliding portion of a mechanical seal device disposed on the other side in the axial direction in mechanical seal devices adjacent to each other.
Inventors:
Suzuki Osamu
Yasuyuki Okunishi
Shuhei Matsui
Masanao Ishijima
Yasuyuki Okunishi
Shuhei Matsui
Masanao Ishijima
Application Number:
JP2018243016A
Publication Date:
December 19, 2022
Filing Date:
December 26, 2018
Export Citation:
Assignee:
Nippon Pillar Industry Co., Ltd.
International Classes:
F16L27/08; F16L39/04; F16L39/06
Domestic Patent References:
| JP2012092955A | ||||
| JP58049086U | ||||
| JP2009168068A |
Attorney, Agent or Firm:
Patent Attorney Corporation Suncrest International Patent Office