
Hydraulic
pumps are used in hydraulic drive systems deliver high-pressure fluid
flow to the pump outlet. They are specially designed pumps widely used
in industrial, commercial and residential settings to create useful
energy from the pressurization of various viscous fluids. Powered by
mechanical energy sources, the hydraulic pumps make use of gears, vanes,
pistons and various other devices to pressurize fluid. When they are
powered by pressurized fluid, the pumps rotate in a reverse direction
and act as a motor. Hydraulic pumps are still the most widely used pump
in industries today, in-spite of new and fast pumps being manufactured
almost everyday. Hydraulic pumps act as motors and are brought into
operation by high-pressured fluid using gears, pistons and other
devices.
Hydraulic pumps can be categorized in two groups:
»
Hydrostatic Pumps: They are positive displacement pumps.
»
Hydrodynamic Pumps: They are of two types: (a) fixed
displacement pumps, in which the displacement cannot be adjusted and
(b) variable displacement pumps, in which the displacement can be
adjusted.
For information on Hydraulic pumps, check out our article
Hydraulic Pumps: The Nitty Gritties
Types of Hydraulic Pumps
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Air hydraulic pumps:Operated by a compressed air source
and require no energy to maintain system pressure. They are
energy-saving pumps.
»
Electric hydraulic pumps: To provide electric power to
machinery, they use hydraulic cylinders.
»
Hydraulic clutch pumps: Here a clutch assembly is joined
by a pump that lets the user to apply the required pressure to
either engage or disengage the clutch system.
»
Hydraulic gear pumps: They have intermeshing gears that
displace fluid and this helps in the creation of mechanical power.
»
Hydraulic hand pumps: They are manually operated to
pressurize a hydraulic system.
»
Hydraulic piston pumps: These makes use of a plunger like
apparatus which helps in moving hydraulic fluids through a cylinder.
» Hydraulic water pumps: They use hydraulic power to move water
from one place to another.
»
Hydraulic ram pumps: They have only two moving parts and
they do not require any maintenance.
Click on the following for more information on Hydraulic Ram Pump.
»
Hydraulic Ram Pump
Applications of Hydraulic Pumps
Hydraulic pumps have applications in all types of low and high-pressure
testing and oilfield uses such as removing cores from core barrels and
testing valves, fittings. They are simple to construct and operate and
are quite flexible with excellent performance. They are used in various
industries like as follows:
» Automotive
» Construction
» Agriculture
» Excavation
» Military
» Manufacturing industries
Important Sites
Hydraulic Pumps www.hydraulicsupermarket.com/products.html
Hydraulic Pumps www.hydraulicsuperstore.com