Educational Revolution

    Simple Definition:-               Hydraulic piston pumps can handle large flows at high hydraulic system pressures. Typical applications are mobile and construction equipment, marine auxiliary power, metal forming and stamping,machine tools and oil field equipment.      In these pumps, the pistons accurately slide back and forth inside the  cylinders that are part of the hydraulic pump. The sealing properties of the pistons are excellent.     Detail:-        In bent axis design, the displacement volume is dependent on the swivel angle: the pistons move within the cylinder bores when the shaft rotates. In swash plate design, the rotating pistons are supported by a swash plate; the angle of the swash plate determines the piston stroke. Bent axis pumps, axial piston pumps and motors using the bent axis principle, fixed or adjustable displacement, exists in two different basic designs. The Thoma-principle (engineer Hans Thoma, Germany, patent 1935) with max 25 degr

Definition:-          A screw pump is a positive-displacement (PD) pumps that use one or several screws to move fluids or solids along the screw(s) axis. In its simplest form (the Archimedes' screw pump), a single screw rotates in a cylindrical cavity, thereby moving the material along the screw's spindle. Detail:- Screw pumps (fixed displacement) consist of two Archimedes' screws that  inter mesh  and are enclosed within the same chamber. These pumps are used for high flows at relatively low pressure (max 100 bars (10,000 kPa). They were used on board ships where a constant pressure hydraulic system extended through the whole ship, especially to control ball valves, but also to help drive the steering gear and other systems. The advantage of the screw pumps is the low sound level of these pumps; however, the efficiency is not high. The major problem of screw pumps is that the hydraulic reaction force is transmitted in a direction that's axially oppo

Simple Definition:-               A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside of a cavity. In some case these vanes can have variable length and/or be tensioned to maintain contact with the walls as the pump rotates. Detail:-             Rotary vane pumps (fixed and simple adjustable displacement) have higher efficiencies than gear pumps, but are also used for mid pressures up to 180 bar (18,000 kPa) in general. Modern units can exceed 300 bar (30,000 kPa) in continuous operation, although vane pumps are not regarded as "high pressure" components. Some types of vane pumps can change the centre of the vane body, so that a simple adjustable pump is obtained. These adjustable vane pumps are in general constant pressure or constant power pumps: the displacement is increased until the required pressure or power is reached and subsequently the displacement or swept volume is decreased until an

Simple Definition:- Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy. It generates flow with enough power to overcome pressure induced by the load at the pump outlet. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. Hydraulic pump types:-         1.1 Gear pumps         1.2 Rotary vane pumps         1.3 Screw pumps         1.4 Bent axis pumps         1.5 Inline axial piston pumps and swashplate principle         1.6 Radial piston pumps         1.7 Peristaltic pumps 1.1 Gear Pump:- Gear pumps (with external teeth) (fixed displacement) are simple and economical pumps. The swept volume or displacement of gear pumps for hydraulics