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Types of PumpsTypes of Pumps

PumpsPumps

What is the pump?What is the pump?

A hydrodynamic pump machine is a device for converting the energy held by mechanical energy into fluid

Transfer liquid from source to destination

Circulate liquid around a system

What are use of Pump ?What are use of Pump ? Used for

• Domestic, commercial, industrial and agricultural services

• Municipal water and wastewater services

20% of world’s electrical energy demand 25-50% of energy usage in some

industries

Pump TerminologyPump Terminology Head Suction head Delivery head Velocity head Static head Manometric head Water power Shaft power Efficiency of pumps

Types of pumpTypes of pump

The pumps can be classified according to principle by which the energy is added to the fluid & their design feature -

1 . Positive displacement pumps 2 . Roto dynamic pumps 3 . Other pumps

Positive Displacement pumpPositive Displacement pump

These pumps are operate on the principle of the definite quantity of liquid is discharged or displaced due to the positive or real displacement of working element ( like piston ,gear, vane, screw)

Positive Displacement pumpPositive Displacement pump1 . Reciprocating pumps :-1 . Reciprocating pumps :- a. Piston pumps :- - single cylinder - double cylinder b. Plunger pumps :- c. Bucket pumps / hand pumps :-

2 . Rotary pumps :-Rotary pumps :- a. Gear pumps . b. Vane pumps . c. Screw pumps .

3 ..Other pumps :-Other pumps :- - Jet pump . -Air lift pump.

Reciprocating pump Reciprocating pump

Reciprocating pump is a positive displacement pump. In this pump the liquid is discharge due to the simple to and fro motion or reciprocating motion of the piston or plunger working in the cylinder of the pump. Hence ,it is called Reciprocating pump .

Classification of Reciprocating Classification of Reciprocating pump pump

1. Based on reciprocating member of the pump. a . Piston pump b . Plunger pump c . Bucket pump 2. Based on action of liquid upon the piston ends a . Single acting pump b . Double acting pump 3. Based on method of drive a . Direct acting pump b . Power pump

Roto dynamic pumps Roto dynamic pumps

These pumps operate on the principle of the rise in pressure energy of liquid by dynamic action of liquid. The dynamic action of liquid is carried out by revolving wheel which has curved vanes on it. This wheel is known as impeller.

Roto dynamic pumps Roto dynamic pumps

1 . Centrifugal pumps :- a. Single stage b. multi stage 2 . Propeller (Axial flow) pumps :-3 . Mixed flow pumps :-

Centrifugal pumpsCentrifugal pumps If mechanical energy is converted

into means of centrifugal force acting on the fluid , for conveying liquids from one place to other such

device is called centrifugal pump

Centrifugal pumpsCentrifugal pumps

Main parts of a Centrifugal pumps :- 1 . Impeller 2 . Casing 3 . Suction pipe with foot valve & a stainer 4 . Delivery pipe

Volute

SuctionImpeller

Construction of Centrifugal Construction of Centrifugal PumpsPumps

How the centrifugal pump worksHow the centrifugal pump works Liquid forced into

impeller

Vanes pass kinetic energy to liquid: liquid rotates and leaves impeller

Volute casing converts kinetic energy into pressure energy

How the centrifugal pump worksHow the centrifugal pump works

Types of centrifugal pumpTypes of centrifugal pump1 . Based on type of casing :- a . Volute or spiral casing type pump b . Vortex or whirlpool chamber type pump c . Diffuser type(casing with guide blades) 2 . Based on no of stage :- a . Single stage b . Multi stage - Impeller in series - Impeller in parallel

Rotary pump Rotary pump Rotary pumps are positive displacement pumps. It

consists of a fixed casing with a rotor which may be in the form of gears , vanes , lobes , screws , cams etc .

Both centrifugal and rotary pumps by circular motion of rotor , but they work on different principle .

It is suitable for pumping viscous fluids like vegetable oil , lubricating oil , alcohol , grease , tar etc .

Classification of Rotary pump Classification of Rotary pump

Rotary pump can be classified according to the type of rotating elements in the fixed casing .

There are main three type of rotary pump . 1 . Gear pump 2 . Vane pump 3 . Screw pump

Any Question ?Any Question ?

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