公开(公告)号：EP2740974A4

公开(公告)日：2015-07-08

申请号：EP12821851

申请日：2012-07-27

申请人： EAGLE IND CO LTD

发明人： OSADA HARUHIRO ,  INOUE HIDEYUKI ,  HOSOE TAKESHI ,  MORIMIYA DAISUKE ,  TOKUNAGA YUICHIRO ,  NEGISHI YUTA

IPC分类号： F16J15/34

CPC分类号： F16J15/34 ,  F16J15/3412

摘要： {Technical Problem} To provide a mechanical seal which will not leak when stationary; which operates using fluid lubrication and prevents leakage during rotation, including at the start of rotation; and which enables airtightness and lubricity to be exhibited. {Solution to Problem} A plurality of sealed-fluid-accommodating blocks separated in the circumferential direction are formed on either the sealing face of a fixed ring or the sealing face of a rotating ring so as to communicate with a sealed fluid accommodation space. Pumping parts for creating a pumping action due to the fixed ring and the rotating ring sliding while undergoing relative rotation are formed on a bottom part of the plurality of sealed-fluid-accommodating blocks. The pumping parts formed on the bottom parts of the plurality of sealed-fluid-accommodating blocks are provided with an intake pumping part which acts in a direction in which the sealed fluid is drawn in and a discharge pumping part which acts in a direction in which the sealed fluid is discharged.