How to choose the plunger pump model and parameters

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Plunger Pump Model and Parameters

A plunger pump is a type of hydraulic pump used in various applications. There are many models of plunger pumps, each with different parameters. Here is an introduction to these models and their parameters:

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1. Model Representation of the Plunger Pump

The general model representation of a plunger pump is as follows:

Nominal Displacement – Variable Form (motorized servo, pressure compensation, electric, manual, etc.) – Pressure Stage – Y (pump) or M (motor) – 14-1 (first structure code) – Technical Improvement Code (A, B, C, etc.) – Rotation Direction (no mark for forward, F for reverse)

For example, 63SCY14-1B means:

  • Displacement: 63 ml/rev
  • Pressure: 31.5 MPa
  • Cylinder body: Rotated
  • Axial piston oil pump with manual variable adjustment

2. Parameters of Plunger Pump

  1. Pressure:
    • Working Pressure: The output pressure of the pump, dependent on the external load.
    • Rated Pressure: The highest recommended pressure for continuous use, reflecting the pump’s capacity (usually indicated on the pump’s nameplate).
  2. Displacement:
    • The volume of oil discharged per revolution without leakage, including theoretical and actual flow.
    • Volumetric Efficiency: The ratio of actual flow to theoretical flow.
  3. Power:
    • Input Power: The mechanical power required to drive the hydraulic pump.
    • Output Power: The hydraulic power output by the plunger pump.

How to Choose the Type of Plunger Pump

With numerous plunger pump models available, each with varying performance, selecting the right type involves careful consideration of system needs and power requirements. Here’s how to choose the appropriate plunger pump:

  1. Determine Key Parameters:
    • Maximum working pressure of the plunger pump.
    • Flow rate of the plunger pump.
  2. Preliminary Selection:
    • Based on the maximum working pressure and flow rate, preliminarily select the pump specifications.
    • Ensure the pump has a certain pressure reserve; typically, the rated working pressure should be 25% to 60% higher than the system’s maximum working pressure.
  3. Determine Driving Power:
    • After selecting the appropriate pump based on pressure and flow rate, determine the driving power needed for the plunger pump.

By following these steps, you can ensure you select a plunger pump that meets your system’s requirements and operates efficiently.

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