Piston advantage

The plunger piston is reciprocated by causing changes in the volume of the seal is achieved with the suction diesel pump manufacturers oil pressure, as compared with gear pumps and vane pump which has many advantages in the cylinder.
First, the parts constituting the sealed volume of the cylindrical piston and cylinder bore, easy to process, can be obtained with high accuracy, good sealing performance, high-pressure work is still high volumetric efficiency;
Second, simply by changing the working stroke of the plunger can change the flow, easy to implement variable;
Third, the piston in the main parts are under pressure stress, the material strength properties can be fully utilized.
Due to the high pressure submersible fuel pump

, compact structure, high efficiency, easy flow regulation, so the need for high pressure, high flow, high-power systems need to adjust the flow rate of the occasion and, as the goal planer, broaching machine, hydraulic machines, construction machinery, mining metallurgical machinery, widely used on the ship. Piston arrangement and the direction of movement of the plunger can be divided into radial and axial piston pump piston into two categories, according to the assignment device type can be divided with a gap-type seal with flow deputy piston and valve piston pump with flow control devices into two categories, according to whether the variable displacement piston pumps are divided into quantitative and variable piston pump.