 Manual pump used to obtain water A pump is a mechanical device used to move liquids or gases. Image File history File links Download high resolution version (985x740, 189 KB) Summary Subject: water pump Original Image Description: CPT Bobrowski the S-5 for 3-7 helps a local child use the new hand pump provided by 3-7FA. This pump is of one of the many commanders emergency...
Image File history File links Download high resolution version (985x740, 189 KB) Summary Subject: water pump Original Image Description: CPT Bobrowski the S-5 for 3-7 helps a local child use the new hand pump provided by 3-7FA. This pump is of one of the many commanders emergency...
A liquid will assume the shape of its container. ...
A gas is one of the four main phases of matter (after solid and liquid, and followed by plasma), that subsequently appear as a solid material is subjected to increasingly higher temperatures. ...
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. Archimedes of Syracuse. ...
Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 350s BC 340s BC 330s BC 320s BC 310s BC - 300s BC - 290s BC 280s BC 270s BC 260s BC 250s BC Years: 305 BC 304 BC 303 BC 302 BC 301 BC - 300 BC - 299 BC 298 BC...
Archimedess screw (also the Archimedean screw) is one of several inventions and discoveries reputed to have been made by Archimedes. ...
Types
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. The heart of animals is a natural example of this type of pump. Pressure (symbol: p) quantifies the intensity of a force acting on a surface in a direction perpendicular to that surface. ...
Cavitation is the phenomenon where small cavities of partial vacuum form in fluid, then rapidly collapse, producing a sharp sound. ...
The heart and lungs (from an older edition of Grays Anatomy) The heart (Latin cor) is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions. ...
Reciprocating positive displacement pump A hydraulic ram is a water-powered cyclic pump. ...
A colourful nodding donkey in the United States A nodding donkey is the overground drive for a submersible pump in a borehole. ...
A vane pump is a positive displacement pump that consists of vanes in a rotor rotating inside of a cavity. ...
piston pump ...
A diaphragm pump uses a combination of the reciprocating action of a rubber diaphragm and suitable non-return valves to pump a fluid. ...
Rotary positive displacement pump Archimedess screw (also the Archimedean screw) is one of several inventions and discoveries reputed to have been made by Archimedes. ...
An exploded view of an external gear pump. ...
A peristaltic pump is a type of positive displacement pump used for pumping a variety of fluids. ...
Peristalsis is the process of involuntary wave-like successive muscular contractions by which food is moved through the digestive tract. ...
A progressive cavity pump is a kind of pump which moves fluid by means of a cavity which progresses along the body of the pump. ...
This article is about the shape. ...
R0t0r is from efnet ...
Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. ...
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. In physics, momentum is a physical quantity related to the velocity and mass of an object. ...
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.
A turbopump can refer to either of two types of pump. ...
WWII era steam turbine used for ship propulsion. ...
A submersible pump is a pump which has a hermetically sealed motor close-coupled to the pump body. ...
A motor is a device that converts energy into mechanical power, and is often synonymous with engine. ...
An Axial Flow Pump is a common type of water pump that essentially consists of a propeller in a tube. ...
A propeller can be seen as a rotating fin in water or a wing in air. ...
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 doeshing useful with waste steam, simply. Suction is the creation of a partial vacuum, or region of low pressure. ...
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. The Coanda effect is the tendency of a stream of fluid to stay attached to a convex surface, rather than follow a straight line in its original direction. ...
Bernoullis principle states that in fluid flow, an increase in velocity occurs simultaneously with decrease in pressure. ...
Centrifugal Pump Components
Pump Casing - To keep the fluid in the pump.
Impeller - The component that drives the fluid to a higher pressure An impeller is a rotor inside a tube or conduit to increase the pressure and flow of a fluid. ...
Shaft - The rod that connects the motor to the impeller A shaft can be an aggressive remark directed at a person like a missile and intended to have a telling effect; his parting shot was `drop dead; she threw shafts of sarcasm; she takes a dig at me every chance she gets slang, meaning to receive unfair treatment a hole...
Motor - The part that powers the pump A motor is a device that converts energy into mechanical power, and is often synonymous with engine. ...
Mechanical Seal, 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. Categories: Technology stubs | Seals (mechanical) ...
A labyrinth seal is a mechanical seal that fits around a rotating shaft to prevent the leakage of oil or other fluids. ...
This article is about mechanical seals. ...
Bearing - To keep the shaft rotating freely in place. A bearing is a component used to reduce friction in a machine. ...
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 stations are buildings designed to hold pumps and equipment for pumping fluids from one place to another. ...
External links - impeller.net - Online Pump Magazine
- Pump suppliers in DMOZ Open Directory Project
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