1.1 Scope
This manual applies to Rotary Blowers of the
TL Series from size 10 to size 900
.
1.2 Operating principle
TL Series Blowers are positive displacement blowers comprising two conjugate shaped Tri-Lobe
rotors which rotate inside a “figure 8” shaped body. The incoming gas is trapped in the space that
forms between the body (figure 1a, 1b) and discharged via the outlet (figure 1c, 1d). The operating
pressure is generated by the resistance met by the gas exiting the unit. The capacity is proportional
to the speed of rotation and is almost constant when the operating pressure varies.
1.3 Construction
The TL Series Blower is engineered for the smoothest possible flow of air, resulting in
lower
pulsation and noise.
The body is closed at both ends by end plates in which the housings for the seals and bearings are
located. The rotors are synchronized by a pair of timing gears having helical, hardened and ground
teeth. The shafts have labyrinth seals; gas leaks are collected in special air spaces in the covers and
are discharged into the atmosphere. Two sumps are mounted on the covers which act as oil sumps
for splash lubrication of the bearings and the synchronizing gears. The gears are secured on the
shafts through conical coupling under oil pressure.
2.1 Gas conveyed
The blower can be used to convey inert gases such as air, nitrogen or other gases which are com-
patible with the lubricating oil and with the materials used in the construction of the blower.
WARNING: The blower cannot be used to convey gases which are explosive, toxic
or in any way dangerous.
NOTE:
To convey special gases consult Blower Engineering.
Number
Description
1
Body
2
Rotor
3
Rotor
4
End Plates
5
Gears
6
Labyrinth Seals
2
1a
1b
1c
1d
Fig. 1
Fig. 2
2
1
3
5
6
4
4
6
Blower Engineering Instructional Manual
Summary of Contents for Tri-Lobe TL Series
Page 1: ......
