I. Is the plunger pump a variable pump?
Under the condition of constant speed, the variable output flow is a variable pump, otherwise it is a quantitative pump, then the plunger Is the pump a fixed pump or a variable pump?
It is understood that the plunger pump has both quantitative pump and variable pump. The variable plunger pump is generally used in places that need to adjust the flow flexibly; and if the system used requires constant pressure and flow, it is usually used. Quantitative plunger pump.
Second, what is a variable plunger pump
The variable plunger pump, as the name suggests, means that the output flow can be changed according to the pressure of the system (the size of the external load). ) self-adjusting plunger pump.
The advantage of the variable displacement plunger pump is that it can automatically adjust the flow, the output flow is small when the pressure is high, and the output flow is large when the pressure is low, which can save the number of hydraulic components, thereby simplifying the oil circuit system, and can Reduce oil heating; the disadvantage is that the flow pulsation is serious, the system pressure is not stable, the life of the pump is short, and the price is high.
Third, how to adjust the flow of the variable plunger pump
The variable plunger pump can adjust the flow, so how to adjust the flow of the variable plunger pump Woolen cloth?
When using a variable displacement plunger pump, to adjust the flow rate, generally by changing the current in the solenoid valve to change the angle of the tilting element, and then change the stroke length of the plunger in the pump cylinder, so as to adjust the flow rate. , the specific adjustment method is different according to the type:
1. The adjustment method of the manual variable piston pump is: directly loosen the screen cap and rotate the adjustment handwheel; there is no adjustment handwheel, but the limit screw Yes, just turn the limit screw.
2. The adjustment methods of the automatic variable piston pump are different. Generally, it is necessary to adjust the adjustment screws of each valve by referring to the adjustment instructions of the respective manufacturers, or to adjust the speed by changing the speed of the variable frequency motor.
