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China hydraulic pump manufacturers,
Our website: www.pepfluid.com
Rational use of piston pump
Selection principles
Structure (1) Pump
When selecting plunger pump structure, the first consideration should apply it open systems, or closed systems. If for open systems, you can selec the swash plate pump without auxiliary pump; if for the manipulated variable mechanism or hydraulic valves and other auxiliary organizations, you can also choose a closed system with auxiliary pump and integrated valve pumps and motors.
(2) the parameters of the pump
The basic parameters of the pressure piston pump, displacement, speed, etc., and can be selected according to the working pressure of the pump rated pressure of the hydraulic system in the metallurgical equipment, the normal working pressure of the hydraulic system is selected to be 70% of the pump rated pressure to 80%, in order to ensure that the pump has sufficient service life. When selecting parameters of the pump should make common operating parameters are within the host's efficient pump efficiency curve area parameters. For indoor use pumps, low noise pump should be selected.
(3) Life
It refers to the sum of the life cycle of the pump overhaul operation at rated conditions of time. metallurgical pump requires the use of more than 5000 h overhaul period.
Installation Notes
(1) Avoid pump shaft by radial force
Whether it is nowhere shaft axial pump swashplate or swash plate axial through-shaft pump shaft radial force is very sensitive and, therefore, does not allow direct installation in the pump pulley (motor) shaft end, gears, sprockets, and must be especially careful to check the concentricity of the prime mover output shaft and the pump drive shaft mounted in a way to avoid due to the bending of the drive shaft causes the wedge gap between the cylinder and the valve plate, increasing leakage, reduce the volumetric efficiency of the pump, cylinder and increased wear between the valve plate, and seriously affect the life of the pump.
?1. The maximum pressure of the hydraulic lift pump, is controlled by a safety valve, the installation must be checked before the first opening pressure of the safety valve to adjust to l75 kg / cm 2.
????2. Rotation of the eccentric shaft, should not get stuck or loosening.
????3. The control valve swing lever is pulled, activity detection control valve is flexible, lightweight, without any slight retardation phenomenon.
????4. The entire hydraulic system at all joins must be sealed, no leaks, in which the paper pad intact, O-ring can not defect, especially in the high-pressure tubing seals at both ends, where there are incomplete aging, should be replaced.
????6. The strainer should smooth, without rupture, to wash and repair timely, necessary, updated. Filter due to vibration is easy to fall, in addition to the loss of filtration effectiveness, impact hydraulic lift pump work, there is bad roll fashion susceptible moving parts, so to discover and tighten fixed.
????6. In order to ensure proper operation of the hydraulic system according to foot the entire system should be added to the gear oil. General farm work after 480 hours, should replac the gear oil rear axle housing, to keep the oil clean. After a quarter of each job, the gear oil filter once.
