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Selection Considerations of extrusion pump

  Selection Considerations of extrusion pump

  Working principle

  volume change and move the work to rely on extrusion pump between the pump cylinder and gear formed to transport liquid or pressurized so that the rotary pump.

  External mesh double gear pump structure. A pair of gears meshing with each other and of the cylinder of the suction chamber and the discharge chamber are separated. When the gear, the gear teeth are disengaged from each side of the suction chamber at the interdental volume gradually increases, the pressure is reduced, the liquid into the teeth in the differential pressure. With the rotation of gear teeth of one liquid is brought to the discharge chamber. Then interdental volume of the discharge chamber side of the gear teeth is gradually reduced, and the liquid is discharged. Gear pump for conveying solid particles, non-corrosive, a wider range of lubricating viscosity liquids. Pump flow up to 300 m 3 / h, pressure up to 3 × 107 Pa. It is usually used as a hydraulic pump and transport various types of oil. Gear pump structure is simple and compact, easy to manufacture, easy to maintain, there are self-absorption capacity, but the flow, pressure pulsation is large and noisy. Gear pumps must be equipped with a safety valve to prevent the discharge pipe for some reason such as clogging the pump outlet pressure exceeds the allowable value and damage the pump or prime mover

  extrusion pump is a positive displacement pump consists of two gear pump consisting of two front and rear cover closed space, when the gear is rotated, the volume of space gear disengagement side grew larger, creating a vacuum, the liquid suction, gear the volume of space the engaging side from small great changes, and squeeze the liquid line to go. Suction chamber and discharge chamber is by engaging line to separate the two gears.

  outlet pressure extrusion pump depends entirely on the size of the pump source resistance.

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