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A progressing cavity pump is a type of positive displacement pump and is also known as a progressive cavity pump, progg cavity pump, eccentric screw pump or cavity pump.It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.
The basic function of a pump is to do work on a liquid. It can be used to transport and compress a liquid. In industries heavy-duty pumps are used to move water, chemicals, slurry, food, oil and so on. Depending on their action, pumps are classified into two types — Centrifugal Pumps and Positive Displacement Pumps. While centrifugal pumps ...
PumpLinx is a 3-D computational fluid dynamics (CFD) software developed for the analysis of fluid pumps, motors, compressors, valves, propellers, hydraulic systems, and other fluid devices with rotating or sliding components.
Engineering classification of slurry is more complex and involves concentration, particle size, shape and weight in order to determine abrasion severity. For engineering selection of slurry pumps, slurry is classified as class 1, class 2, class 3 and class 4. Selection of slurry pumps is more difficult than selection of pumps for water and liquids.
Reciprocating pumps include plunger, diaphragm, and piston pumps. The high-density solids pumps which can be used in the widest range of situations are piston (or reciprocating) pumps. They can be realized as single-cylinder or two-cylinder pumps. In the latter case, power is transferred to the material via delivery pistons working in push-pull ...
Coal slurry can be transferred by pipeline or with specialized pumps such as a progressive cavity pump to pump the highly abrasive, corrosive and viscous coal slurry. [2] More than 7 billion tons of coal are mined per year (2010), using approximately 200 litres of water per ton. [ 3 ]
Besides the drum, other accessories, for example, agitators and vacuum pump, vacuum receivers, slurry pumps are required. The discharge cake contains residual moisture. The cake tends to crack due to their air drawn through by the vacuum system, so that washing and drying are not efficient. High energy consumption by the vacuum pump.
The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, dates back to Ancient Egypt before the 3rd century BC. [ 1 ] [ 2 ] The Egyptian screw, used to lift water from the Nile , was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube ...