Page 120 - Water and wastewater engineering
P. 120
INTAKE STRUCTURES 3-17
Pump Criteria
Pump Type. The most common pump used in the low-lift pump station is a vertical turbine pump
as shown in Figure 3-11 (Honeycutt and Clopton, 1976). The water enters the pump through the
strainer or screen. It is lifted by one or more impellers located inside the pump bowl ( Figure 3-12 ).
Pump motor
Top shaft
Discharge to water
Prelubricating pipe treatment plan
Discharge head
Shaft coupling
Line shaft
Top column pipe
Bearing bracket
Shaft sleeve
Column pipe coupling
Open lineshaft bearing
Column pipe
Impeller shaft
Bearing cap
Top bowl bearing
Top bowl
Bowl
Impeller
Suction head bearing
Suction head
Suction pipe
Strainer
FIGURE 3-11
Section of vertical turbine pump with closed impellers and open-line shafting (water
lubrication).
