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P I S T O N P U M P S (PÍSTOVÁ ČERPADLA)

P I S T O N P U M P S (PÍSTOVÁ ČERPADLA). Piston pumps are a type of water pumps which cause the liquid to flow using one or more oscillating pistons. Detail of a hand pump. Types according to number of cylinders

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P I S T O N P U M P S (PÍSTOVÁ ČERPADLA)

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  1. PISTONPUMPS(PÍSTOVÁ ČERPADLA)

  2. Piston pumps are a type of water pumps which cause the liquid to flow using one or more oscillating pistons

  3. Detail of a hand pump

  4. Types according to number of cylinders • Piston pumps belong among the reciprocating pumps. They need a system of suction and dischargevalves, thanks to which the fluid is moved in a required direction. There are various types – some of them have just one cylinder (called simplex-cylinder pump), others may have up to four cylinders (quad-cylinder pump) or even more. Most reciprocating pumps are duplex- or "triplex-cylinder types (with two or three cylinders). • Types according to the way of suction and discharge • Piston pumps can also differ according to the direction of suction and discharge.Single acting piston pumps have independent suction and discharge strokes, while double acting pumps perform suction and discharge in both directions. • Application • Piston pumps are usually driven by air or steam, or by a belt drive from an independent engine. Piston pumps were very popular in the times of the industrial revolution in the 19th century, but nowadays they are used less often. Their usual application is for pumping fluids with high resistance, where high flow rate is not needed. Typical pumped materials include for example concrete and heavy oils. 

  5. Hand-operedreciprocatingwater pump

  6. Vocabulary Piston pump – pístové čerpadlo Piston – píst Liquid – kapalina Flow – téct Cylinder – válec Suctionvalve – sací ventil Dischargevalve – výtlačný ventil Fluid – tekutina Independent – nezávislý Stroke – doba, zdvih pístu Perform – provádět Driven – poháněný Steam – pára Belt drive – pásový pohon Industrialrevolution – průmyslová revoluce Application – použití Resistance – odpor Flowrate – rychlost toku, průtoková rychlost Concrete – beton Oil – olej

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