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Comparison Of Pumps
This article lists different types of pump A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they u ... and provides a comparison of certain key design features. Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping from wells). Direct lift devices Displacement pumps Velocity pumps Buoyancy pumps Impulse Pumps Note: reciprocating pumps are cyclic, rotary pumps are typically continuous. References {{DEFAULTSORT:Pump comparison * Technological comparisons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pump
A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: ''direct lift'', ''displacement'', and ''gravity'' pumps. Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers and other components of heating, ventilation and air conditioning systems. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis. When a casing contains only one revolving impeller, it is called a single-stage pump. Whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Pump
A gear pump uses the meshing of gears to pump fluid by displacement. They are one of the most common types of pumps for hydraulic machinery, hydraulic fluid power applications. The gear pump was invented around 1600 by Johannes Kepler. Gear pumps are also widely used in chemical installations to pump high viscosity fluids. There are two main variations: ''external gear pumps'' which use two external spur gears, and ''internal gear pumps'' which use an external and an internal spur gear (internal spur gear teeth face inwards, see below). Gear pumps are positive displacement pump, ''positive displacement'' (or ''fixed displacement''), meaning they pump a constant amount of fluid for each revolution. Some gear pumps are designed to function as either a Hydraulic motor, motor or a pump. Theory of operation As the gears rotate they separate on the intake side of the pump, creating a void and suction which is filled by fluid. The fluid is carried by the gears to the discharge sid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Ram
A hydraulic ram, or hydram, is a cyclic water pump powered by hydropower. It takes in water at one "hydraulic head" (pressure) and flow rate, and outputs water at a higher hydraulic head and lower flow rate. The device uses the water hammer effect to develop pressure that allows a portion of the input water that powers the pump to be lifted to a point higher than where the water originally started. The hydraulic ram is sometimes used in remote areas, where there is both a source of low-head hydropower and a need for pumping water to a destination higher in elevation than the source. In this situation, the ram is often useful, since it requires no outside source of power other than the kinetic energy of flowing water. History The Alhambra, built by Nasrid Sultan Ibn al-Ahmar of Granada beginning AD1238, used a hydram to raise water. Through a first reservoir, filled by a channel from the Darro River, water emptied via a large vertical channel into a second reservoir bene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airlift Pump
An airlift pump is a pump that has low suction and moderate discharge of liquid and entrained solids. The pump injects compressed air at the bottom of the discharge pipe which is immersed in the liquid. The compressed air mixes with the liquid causing the air-water mixture to be less dense than the rest of the liquid around it and therefore is displaced upwards through the discharge pipe by the surrounding liquid of higher density. Solids may be entrained in the flow and if small enough to fit through the pipe, will be discharged with the rest of the flow at a shallower depth or above the surface. Airlift pumps are widely used in aquaculture to pump, circulate and aerate water in closed, recirculating systems and ponds. Other applications include dredging, underwater archaeology, salvage operations and collection of scientific specimens. Principle The only energy required is provided by compressed air. This air is usually compressed by a compressor or a blower. The air is injec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Ladder
A waterladder pump, water ladder, dragon spine, dragon wheel or rahad is a low lift pump which is composed of sprockets that move a chain with paddles over a trough. Water is pumped as the paddles push the water up the trough. Application The water ladder, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. It is currently still used by farmers in south-east Asia. Advantages The water ladder was built as an alternative to the paddle wheel to get around the problem that to lift water to a greater height, a bigger wheel is needed. Despite the emergence of new pumps that operate on other principles, the water ladder remains an important tool as some of its other benefits are that they can be built and repaired easily at a very low cost. This is possible as all the components can be built from local resources, such as wood; which can be obtained and shaped into the desired form easily. Disadvantages As mentioned before, the pump only allows th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulser Pump
A pulser pump is a gas lift device that uses gravity to pump water to a higher elevation. It has no moving parts. Operation A pulser pump makes use of water that flows through pipes and an air chamber from an upper reservoir to a lower reservoir. The intake is a trompe, which uses water flow to pump air to a separation chamber; air trapped in the chamber then drives an airlift pump. The top of the pipe that connects the upper reservoir to the air chamber is positioned just below the water surface. As the water drops down the pipe, air is sucked down with it. The air forms a "bubble" near the roof of the air chamber. A narrow riser pipe extends from the air chamber up to the higher elevation to which the water will be pumped. Initially the water level will be near the roof of the air chamber. As air accumulates, pressure builds, which will push water up into the riser pipe. At some point the "air bubble" will extend below the bottom of the riser pipe, which will allow some of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Progressive Cavity Pump
Progressive may refer to: Politics * Progressivism, a political philosophy in support of social reform ** Progressivism in the United States, the political philosophy in the American context * Progressive realism, an American foreign policy paradigm focused on producing measurable results in pursuit of widely supported goals Political organizations * Congressional Progressive Caucus, members within the Democratic Party in the United States Congress dedicated to the advancement of progressive issues and positions * Progressive Alliance (other) * Progressive Conservative (other) * Progressive Party (other) * Progressive Unionist (other) Other uses in politics * Progressive Era, a period of reform in the United States (c. 1890–1930) * Progressive tax, a type of tax rate structure Arts, entertainment, and media Music * Progressive music, a type of music that expands stylistic boundaries outwards * "Progressive" (song), a 2009 single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peristaltic Pump
A peristaltic pump, also commonly known as a roller pump, is a type of positive displacement pump used for pumping a variety of fluids. The fluid is contained in a flexible tube fitted inside a circular pump casing. Most peristaltic pumps work through rotary motion, though linear peristaltic pumps have also been made. The rotor has a number of "wipers" or "rollers" attached to its external circumference, which compress the flexible tube as they rotate by. The part of the tube under compression is closed, forcing the fluid to move through the tube. Additionally, as the tube opens to its natural state after the rollers pass, more fluid is drawn into the tube. This process is called peristalsis and is used in many biological systems such as the gastrointestinal tract. Typically, there will be two or more rollers compressing the tube, trapping a body of fluid between them. The body of fluid is transported through the tube, toward the pump outlet. Peristaltic pumps may run continuous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diaphragm Pump
A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm ( check valve, butterfly valves, flap valves, or any other form of shut-off valves) to pump a fluid. There are three main types of diaphragm pumps: * Those in which the diaphragm is sealed with one side in the fluid to be pumped, and the other in air or hydraulic fluid. The diaphragm is flexed, causing the volume of the pump chamber to increase and decrease. A pair of non-return check valves prevent reverse flow of the fluid. * Those employing volumetric positive displacement where the prime mover of the diaphragm is electro-mechanical, working through a crank or geared motor drive, or purely mechanical, such as with a lever or handle. This method flexes the diaphragm through simple mechanical action, and one side of the diaphragm is open to air. * T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shadoof
A shadoof or shaduf (from the Arabic word , ''šādūf'') is an irrigation tool. It is highly efficient, and has been known since 3000 BCE. Names It is also called a lift, well pole, well sweep, or simply a sweep in the US.Knight, Edward Henry. ''Knight's American mechanical dictionary''. Vol. 3. New York, Hurd and Houghton: Riverside Press, 1877. 2,468. Print. A less common English translation is swape. Picotah (or Picota) is a Portuguese loan word. It is also called a ''jiégāo'' (桔槹) in Chinese. The Tamil name is ''thulla'' (துலா) while Telugu name is ''ethaamu'' (ఏతాము) or ''ethamu'' (ఏతము). History The ''shaduf'', or sweep, is an early crane-like tool with a lever mechanism, used in irrigation since around 3000 BCE by the Mesopotamians, 2000 BCE by the ancient Egyptians, and later by the Minoans, Chinese (c 1600 BCE), and others. It is generally used in a crop irrigation system using basins, dikes, ditches, walls, canals, and similar wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiral Pump
The pumping of water is a basic and practical technique, far more practical than scooping it up with one's hands or lifting it in a hand-held bucket. This is true whether the water is drawn from a fresh source, moved to a needed location, purified, or used for irrigation, washing, or sewage treatment, or for evacuating water from an undesirable location. Regardless of the outcome, the energy required to pump water is an extremely demanding component of water consumption. All other processes depend or benefit either from water descending from a higher elevation or some pressurized plumbing system. The ancient concept of the aqueduct took simple and eloquent advantage of maintaining elevation of water for as long and far a distance as possible. Thus, as water moves over great distances, it retains a larger component of its potential energy by spending small portions of this energy flowing down a slight gradation. A useful aqueduct system ultimately depends on a fresh water source e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coil Pump
The pumping of water is a basic and practical technique, far more practical than scooping it up with one's hands or lifting it in a hand-held bucket. This is true whether the water is drawn from a Purified water, fresh source, moved to a needed location, water purification, purified, or used for irrigation, washing, or sewage treatment, or for evacuating water from an undesirable location. Regardless of the outcome, the energy required to pump water is an extremely demanding component of water footprint, water consumption. All other processes depend or benefit either from water descending from a higher elevation or some pressurized plumbing system. The ancient concept of the aqueduct (water supply), aqueduct took simple and eloquent advantage of maintaining elevation of water for as long and far a distance as possible. Thus, as water moves over great distances, it retains a larger component of its potential energy by spending small portions of this energy flowing down a slight grada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
