After entering the 21st century, great changes have taken place in our country's science and technology and economy. Especially in the past 20 years, all walks of life have flourished. Especially in the industrial, construction, petroleum, chemical and other industries, have made great progress. The demand for pumps in these industries is very special. Research on pumps has now become an important part of our economic development. The piston pump failure analysis and solutions to share more and more people have been responding. Piston pump failure analysis and solutions 1, the hydraulic pump output flow is not enough or not output fluid: (1) insufficient inhalation. The reason is that the resistance of the oil suction pipe is too large or the amount of oil is insufficient. Such as the pump speed is too large, the tank surface is too low, into the tube leakage, filter plug and so on. (2) the amount of leakage is too large. The reason is the pump gap is too large, caused by poor sealing. Such as oil pan with metal debris, iron filings and other scratches, the end of the oil spill; can check the pump fluid in the foreign body of impurities in the pump to determine the damaged parts. 2, the median oil displacement is not zero: variable axial piston pump swashplate tilt is called zero when the median, then the pump output flow should be zero. However, there is a tendency for the center to deviate from the midpoint of the adjustment mechanism and there is still flow output at the midpoint. The reason for this is that the controller is out of position, loose or damaged, requiring zeroing, fastening or replacement. Insufficient pump force to maintain the angle of the trunnion wear will have this phenomenon. 3, the output flow fluctuations: the output flow fluctuations and many factors. The variable pump can be regarded as the poor control of the variable mechanism, such as foreign body into the variable mechanism, the control piston on the draw marks, wear marks, scars, etc., resulting in control piston instability. Due to insufficient energy in the amplifier or damaged parts, the damping effect of the spring-containing control piston is poor, resulting in unstable control piston motion. Flow instability is often accompanied by pressure fluctuations. Such failures generally open the hydraulic pump, replace damaged parts, increase damping, improve the spring stiffness and control pressure. The above 3:00 is the more common problems in normal use, we have drawn great attention. Research and analysis of other failures require the accumulation of experience and sharing. The effect of using a good product not only needs the characteristics of the product itself, but also need everyone's common wisdom crystallization.
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