In modern technology is used a great number of varieties of hydraulic machines. The most widely used volume and Grundfos Pumps and hydraulic cylinders.
Bulk hydraulic (piston, gear, axial and so on) work due to changes in the volume of working chambers, periodically connecting to the inlet and outlet.
Working body of the blade of the machine is rotating impeller is equipped with blades. The energy from the impeller fluid (Grundfos Pump) or from the fluid impeller (vane motor) is passed through the dynamic interaction of blade wheels with a liquid flowing around them. By the vane pump are circulating and axial.
The simplest scheme of a Grundfos Circulating pump consists of three main elements – the inlet, impeller and discharge. According to cart liquid is fed into the impeller from the supply ducts. The purpose of the impeller is the transfer of fluid power from the engine.
Grundfos Circulator pump consists of a master and slave (the rim) with the disc, between which are vanes, curved, usually in the direction opposite to the direction of rotation of the wheel. A leading disk impeller is mounted on the shaft. Fluid moves through the wheel from the central part of the periphery. On the challenge fluid is removed from the impeller to the discharge nozzle or in multistage pumps to the next wheel.

