Blowers And Pumps

Question 1

What is the purpose of a blower (process air compressor)

Answer 1

Provide air at 6-10 psi for mixing and oxygenation

Question 2

What are the different categories of blowers?

Answer 2

Positive displacement
Centrifugal
Turbo

Question 3

Describe positive displacement blowers

Answer 3

Low RPM
Constant volume output per revolution
Timing gears drive lobe type impellers
Lubrication by oil pump

Question 4

Describe centrifugal blowers

Answer 4

Consist of impeller, volute, shaft with bearings

Driven by electric motor and gearbox or VFD

Volume output controlled by air input vanes or butterfly valve

Lubrication by oil pump with filter and cooler

Question 5

What are positive displacement pumps best suited for?

Answer 5

Heavier, more viscous materials and metering applications

Question 6

What are centrifugal pumps best suited for?

Answer 6

Moving large quantities of less viscous materials

Question 7

List the types of positive displacement pumps

Answer 7

Piston or reciprocating
Progressive cavity
Diaphragm
Double disc
Rotary Lobe
Screw
Airlift
Ejector

Question 8

List the types of centrifugal pumps

Answer 8

Horizontal non-clog with open impeller
Vertical ball bearing
Submersible
Propeller
Vertical wet well

Question 9

What are the different types of valves?

Answer 9

Check valves
Plug valves
Gate valves
Sluice gate valve