Blog Posts - Hydraulic Machines



Definition of Positive displacement pump

Pumps are the basic requirement in our day to day life. These are having so much of importance. Pumps field is so good. for every mechanical engineer should have a good idea in Pumps. All the fundamentals of pumps are given below.........Introduction...

Principle of Operation of Positive Displacement Pump

This is the operation of simple Positive Displacement Pump is given below.Principle of Operation of Positive Displacement Pump All positive displacement pumps operate on the same basic principle. This principle can be most easily demonstrated by cons...

Reciprocating Pumps types

Reciprocating positive displacement pumps are generally categorized in four ways: Direct-acting or indirect-actingSimplex or dupleSingle-acting or double-acting Power pump...

Direct-Acting and Indirect-Acting Pumps

Direct-Acting and Indirect-Acting PumpsSome reciprocating pumps are powered by prime movers that also have reciprocatingmotion, such as a reciprocating pump powered by a reciprocating steam piston. The piston rod of the steam piston may be directly c...

Simplex and Duplex Pump

Simplex and Duplex PumpA simplex pump, sometimes referred to as a single pump, is a pump having a single liquid (pump) cylinder. A duplex pump is the equivalent of two simplex pumps placed side by side on the same foundation.The driving of the piston...

Single-Acting and Double-Acting Pumps

Single-Acting and Double-Acting PumpsA single-acting pump is one that takes a suction, filling the pump cylinder on the stroke in only one direction, called the suction stroke, and then forces the liquid out of the cylinder on the return stroke, call...

Working of Centrifugal Compressor

IntroductionAir compressors of various designs are used widely throughout DOE facilities in numerous applications. Compressed air has numerous uses throughout a facility including the operation of equipment and portable tools. Three types of designs...

Types of Air Compressor

Air compressors of various designs are used widely throughout DOE facilities in numerous applications. Compressed air has numerous uses throughout a facility including the operation of equipment and portable tools.Three types of designs1. reciprocati...

Types Rotary Compressors

Rotary CompressorsThe rotary compressor is adaptable to direct drive by induction motors or multicylinder gasoline or diesel engines. The units are compact, relatively inexpensive, and require a minimum of operating attention and maintenance. They oc...

Rotary slide vane type Air Compressor

Rotary slide vane type Air Compressor has longitudinal vanes, sliding radially in a slotted rotor mounted eccentrically in a cylinder. The centrifugal force carries the sliding vanes against the cylindrical case with the vanes forming a number of ind...

Rotary Lobe type Air Compressor

Rotary Lobe type Air Compressor has two mating lobe-type rotors mounted in a case. The lobes are gear driven at close clearance, but without metal-to-metal contact. The suction to the unit is located where the cavity made by the lobes is largest. As...

Rotary Liquid Seal ring type Air compressor

Rotary Liquid Seal ring type Air compressor has forward inclined, open impeller, in an oblong cavity filled with liquid. As the impellerrotates, the centrifugal force causes the seal liquid to collect at the outer edge ofthe oblong cavity. Due to the...


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