| 摘要 |
<p>PCT No. PCT/GB83/00093 Sec. 371 Date Nov. 18, 1983 Sec. 102(e) Date Nov. 18, 1983 PCT Filed Mar. 28, 1983 PCT Pub. No. WO83/03454 PCT Pub. Date Oct. 13, 1983.A mechanical seal for a shaft (1) existing a housing (12) has an end plate (22) secured to the housing and a sleeve (26) secured to the shaft. The sleeve (26) carries a rotary seal element (40) and the end plate a stationary seal element (52) which form a running seal at faces (48,50). A multipurpose bush (60) is a close fit on the sleeve (26), it positions a spring (64) pressing the seal elements (40,52) together, it caries a lipseal (78) and it prevents collar (30) securing the sleeve (26) to the shaft (10) from contacting the end plate (22) in the event that the sleeve becomes unsecured from the shaft (110). The bush (60) is constructed from spark resistant material. A removable key (88) positions the sleeve (26), and hence the seal elements (40,52) and bush (60) with respect to the end plate (22) prior to tightening sleeve-security screws (32).</p> |
