3.3
Batch and continuous
lubricating systems
3.3 Batch and continuous
lubricating systems
? For small or medium units without a circulatory
lubricating system,the oil is often treated on the
batch system.
? As large a quantity of oil as possible is drained
from the engine at intervals and run into a heating
tank,the system being replenished with clean oil
at the same time.
? The heated oil is run through the purifier and
pumped back to the main oil tank.
3.3 Batch and continuous
lubricating systems
? For removing solub1e sludge,a system
combining the batch and continuous
systems is effective.
? The used oil drains to a tank,where it is
allowed to rest for about ten days.
? The oil cools and any s1udge settles,The
oil is then drawn off,run through the
purifier,and pumped to the clean oil tank.
3.3 Batch and continuous
lubricating systems
? When the oil in use shows signs of
sludging,it is drained off,the clean oil is
pumped into the system and the cycle re-
started.
? The purifier is used on the continuous
system all the time,except for the short
period when the batch of oil from the dirty
oil tank is being purified.
Figure 3.4 Method of installing on Alfa-Laval purifier in the
lubricating system of a diesel engine for continuous by-pass
purification
1.Sump tank for dirty
oil from engine
2.Dirty oil to purifier
3.Heater
4,Pump
5.Hot water piping
6.Purifier
7.Purified oil
8.To waste
3.3 Batch and continuous
lubricating systems
? Continuous bypass systems for
diesel-engine installations are
illustrated in Figures 3.4,
? In Figure 3.4 (diesel engine)
the bottom of the engine-sump
tank is connected to the feed
pump of the purifier by the
pipeline,
? A heater is fitted to the pining
in order to make the oil
sufficiently fluid for
centrifugal treatment,
especially when the engine is
cold,
3.3 Batch and continuous
lubricating systems
? The outlet for purified
oil is connected to the
top of the sump-tank
by means of the return
pipe,
? The water and sludge
outlet is connected to
the waste by a pipe.
3.3 Batch and continuous
lubricating systems
? The feed pipe should
preferably be connected to
a supply of hot,fresh water,
? This arrangement facilitates
the priming of the purifier
bowl with water,and
enables some of the dirt to
be occasionally washed out
from the bowl,
3.3 Batch and continuous
lubricating systems
? In the case of small engines
containing a rather small
quantity of oil in their
crankcases,a tank should be
included in the system,
? The oil required for filling
the purifier bowl and pipe-
work,etc,is drawn from
this tank,the oil level in the
engine thus remaining
constant.
Batch and continuous
lubricating systems
3.3 Batch and continuous
lubricating systems
? For small or medium units without a circulatory
lubricating system,the oil is often treated on the
batch system.
? As large a quantity of oil as possible is drained
from the engine at intervals and run into a heating
tank,the system being replenished with clean oil
at the same time.
? The heated oil is run through the purifier and
pumped back to the main oil tank.
3.3 Batch and continuous
lubricating systems
? For removing solub1e sludge,a system
combining the batch and continuous
systems is effective.
? The used oil drains to a tank,where it is
allowed to rest for about ten days.
? The oil cools and any s1udge settles,The
oil is then drawn off,run through the
purifier,and pumped to the clean oil tank.
3.3 Batch and continuous
lubricating systems
? When the oil in use shows signs of
sludging,it is drained off,the clean oil is
pumped into the system and the cycle re-
started.
? The purifier is used on the continuous
system all the time,except for the short
period when the batch of oil from the dirty
oil tank is being purified.
Figure 3.4 Method of installing on Alfa-Laval purifier in the
lubricating system of a diesel engine for continuous by-pass
purification
1.Sump tank for dirty
oil from engine
2.Dirty oil to purifier
3.Heater
4,Pump
5.Hot water piping
6.Purifier
7.Purified oil
8.To waste
3.3 Batch and continuous
lubricating systems
? Continuous bypass systems for
diesel-engine installations are
illustrated in Figures 3.4,
? In Figure 3.4 (diesel engine)
the bottom of the engine-sump
tank is connected to the feed
pump of the purifier by the
pipeline,
? A heater is fitted to the pining
in order to make the oil
sufficiently fluid for
centrifugal treatment,
especially when the engine is
cold,
3.3 Batch and continuous
lubricating systems
? The outlet for purified
oil is connected to the
top of the sump-tank
by means of the return
pipe,
? The water and sludge
outlet is connected to
the waste by a pipe.
3.3 Batch and continuous
lubricating systems
? The feed pipe should
preferably be connected to
a supply of hot,fresh water,
? This arrangement facilitates
the priming of the purifier
bowl with water,and
enables some of the dirt to
be occasionally washed out
from the bowl,
3.3 Batch and continuous
lubricating systems
? In the case of small engines
containing a rather small
quantity of oil in their
crankcases,a tank should be
included in the system,
? The oil required for filling
the purifier bowl and pipe-
work,etc,is drawn from
this tank,the oil level in the
engine thus remaining
constant.
