Pump

A pump is a mechanical device used to move liquids or gases. Also the heart is an essential pump in humans and animals to move the blood around. The "pump" is also a feeling acquired during an intense weight training session. The earliest pump was described by Archimedes around 300 BC and is known as the Archimedes screw pump. Pumps work by using mechanical forces to push the material, either by physically lifting, or by the force of compression. == Types of pump == Pumps fall into two categories: positive displacement pumps, which force fluid from one sealed chamber to another with little leakage, and dynamic pumps, which use the momentum of the fluid to move it across an unsealed chamber. === Positive displacement pump === This type of pump forces the fluid from one chamber to another by reducing the volume of the first chamber while increasing the volume of the second. Such a pump produces a constant flow regardless of intake pressure or outlet pressure, unless the intake pressure drops below a certain limit, causing cavitation, or the outlet pressure exceeds the capacity of the pump, causing pump failure. These pumps often have a relief valve to prevent the latter problem. ==== Reciprocating positive displacement pump ==== *Hydraulic ram *Nodding donkey *Stirrup pump *Vane pumps (with flexible or rigid vanes) *Piston pumps *Diaphragm pump ==== Rotary positive displacement pump ==== *Archimedes screw *Gear pumps (internal and external) *Lobe pumps *Peristaltic pump (uses a process similar to peristalsis in animals) *Circumferential piston pump *progressive cavity pump : pumps fluid by the rotation of a helical steel rotor inside a rubber pump body with a helical aperture === Dynamic pump === The dynamic pump causes the fluid to move from inlet to outlet under its own momentum. This type tends not to need a release valve, because as the outlet pressure rises the pump simply becomes less efficient. Fluid motion can be rotary, as in centrifugal pumps, or linear, as in reciprocating dynamic pumps. ==== Rotary dynamic (centrifugal) pump ==== This type of pump contains a rotating part called the ''impeller'' inside a stationary cavity called the ''volute''. The impeller forces the fluid to rotate, and thereby to move from inlet to outlet under its own momentum. Examples: *turbopump: the fluid is moved by the blades of a high-speed turbine. *submersible pump : the fluid is moved by a pump joined to a sealed motor and submerged in the fluid to be pumped. *split case centrifugal pump : the fluid is pumped by a horizontal or vertical pump with a split volute to allow maintenance access. *axial flow pump : the fluid is pumped by a propellor type impeller inside a section of pipe. ==== Linear or reciprocating dynamic pump ==== The Vortec Transvector is one example of a no-moving-parts dynamic air pump. A film of fast moving air formed by releasing high pressure air through a slit is discharged adjacent a surface, and drags ambient air along with it. The higher the pressure of the primary air supply, the worse the performance. It is an example of an ejector pump. Steam ejectors are used to cool bleach water so it will retain the chlorine. They simply discharge a boiler into a tube, sucking water vapor out from above a sealed tank. The water inside slowly cools. Not very efficient, but does something useful with waste steam, simply. A well pump is also a dynamic pump. Since water will boil if any attempt is made to "suck" it more than about thirty feet high, high pressure water is injected in at the bottom of a well, forcing the well water to flow upwards much more than thirty feet. Ejectors are used to augment the flow in turbojets, near the aft end. The Coanda effect is the tendency of such a moving stream to cling to a surface, even when the surface deflects the stream away from its original direction. The surface seems to pull the stream. It is a manifestation of Bernoulli's law: since energy is conserved, a moving fluid has a lower pressure than a static fluid. Centrifugal Pump Components Pump Casing - To keep the fluid in the pump. Impeller - The component that drives the fluid to a higher pressure Shaft - The rod that connects the motor to the impeller Motor - The part that powers the pump Seal (mechanical), labyrinth seal, gasket or Packing - To keep the fluid from leaking out to the atmosphere. There are some magnetically driven centrifugal pumps that do not need such seals or packing. Bearing (mechanical) - To keep the shaft rotating freely in place. Outboard bearing - Bearing at motor end of shaft Inboard bearing - Bearing at impeller side of pump. Need 2 bearing to hold shaft in place Oiler - To provide oil to lubricate the bearing so it will not jam. May use grease also, if so, grease gun inject grease through nipple to provide lubrication (Nipple is a type of joint with female threads.) ==See also== Pumping station Pumps Mechanical engineering

Pump

Dear Sir, We are professionally mangaed India based "Fieldmarshal"Brand Highspeed diesel engine manufacturing company,Presently we are using Volute casing and split casing pumps for the agriculture purpose which coupled with our engine,Now we wish to add some new features in it,can you guide us. Thanking you. For Gujarat Forgings Ltd. [Ashesh Joshi] Jr.Manager-Sales

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Words begining with Pump:

Pump
Pump
Pump-action
Pump-action_shotgun
Pump-action_shotguns
Pump-jet
Pump-n-dump
Pumped-storage_hydroelectricity
Pumped-storage_hydroelectricity
Pumped_storage
Pumped_storage_hydroelectricity
Pumped_storage_plants
Pumper
Pumpernickel
Pumpernickel_bread
Pumpernickle
Pumpers
Pumper_truck
Pumpherston
Pumpherston,_West_Lothian
Pumphrey,_Maryland
Pumphrey,_MD
Pumpie
Pumpie
Pumpie/Images
Pumpie/monobook.css
Pumpie/test
Pumpie/test2
Pumpin'_House
Pumpin'_House
Pumpin'_house
Pumpin'_house
Pumping
Pumping_for_use_in_water_purification_systems
Pumping_Gas
Pumping_Iron
Pumping_Lemma
Pumping_lemma
Pumping_lemma
Pumping_lemma_for_regular_languages
Pumping_Station
Pumping_station
Pumping_test
Pumpjet
Pumpkin
Pumpkin
Pumpkincat
Pumpkinhead
PumpkinKing
Pumpkinland
Pumpkins
Pumpkinseed
Pumpkin_Center
Pumpkin_Center,_NC
Pumpkin_Center,_North_Carolina
Pumpkin_chunking
Pumpkin_Diamond
Pumpkin_Fest
Pumpkin_pie
Pumpkin_pie
Pumpkin_seed_oil
Pumpmon
Pumps
Pumps
Pumpsie_Green
Pump_(album)
Pump_(album)
Pump_action
Pump_action_shotgun
Pump_and_dump
Pump_Back,_OK
Pump_Back,_Oklahoma
Pump_boat
Pump_Boys_and_Dinettes
Pump_Girls
Pump_It
Pump_It_Up
Pump_It_Up
Pump_it_Up
Pump_it_Up
Pump_it_up
Pump_It_Up:_In_The_Groove_2
Pump_jet
Pump_organ
Pump_organ
PUMP_SOURCE
Pump_Source
Pump_test
Pump_Up_The_Valuum
Pump_Up_the_Valuum
Pump_Up_the_Valuum
Pump_up_the_Valuum
Pump_Up_The_Volume
Pump_Up_the_Volume
Pump_Up_The_Volume_(film)