Blade pump Hydraulic blade pumps, or blade pumps, are often used in casting machines and injection molds in industries such as road construction machinery. Blade hydraulic pumps operate at very low flow rates. That is, constant current. In this way, hydraulic blade pumps have low noise and relatively high speed. Important specifications of blade pumps: Low flow rate, very low operating sound level in a wide range of operating speeds in a wide range of working pressure viscosity does not exceed 175 bar in normal mode. However, in special designs of hydraulic blade pumps, the pressure reaches 200 and 300 bar. Hydraulic vane pumps are available in two single-chamber and two-chamber modes. Both are made up of the same components and include a rotor and a blade. The only difference between these two types of hydraulic blade pumps is in the shape of the ring course, which restricts the movement of the blade course. The pump shell uses a spring or a hydraulic load in the groove where the blades are located. In this type of pumps, the pumping is done by rotating the blades. The pumping mechanism in a blade pump consists mainly of a rotor, blades, loop and grooved plate, and two fluid inlet and outlet ducts.