Page 426 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition
P. 426
392 Applied Process Design for Chemical and Petrochemical Plants
1 . Cylinder and headplates
2. Impellers
3. Shafts
4. Bearings
5. Timing gears
6. Lubrication
Figure 6-46A. Exploded view of rotary lobe gas pump with mechanical seals and pressure lubrication for bearings. By permission, Roots Divi-
sion; Dresser Industries, Inc.
Detail - Mechanical seal
PRESSURE IN THIS GAS AREA
NOT TO EXCEED OIL PRESSURE
AT SEAL FACE
SEALING
FACE
" OIL THROntlNG
PASSAGE AND
BEARING FEED
Figure 6-468. Mechanical seal to be used with Figure 6-46A. By permission, Roots Division, Dresser Industries, Inc.
