internal gear pump

internal gear pump for pressure and plastics machinery

Internal gear pump is a kind of hydraulic pump with fixed displacement, adopting internal gears as the main working parts, and optimizing its performance through clearance compensation technology.

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Description

Internal gear pumps utilize the meshing of an inner gear with an outer gear to create efficient, stable hydraulic flow. The pump’s design incorporates radial and axial pressure compensation devices, which maintain high volumetric efficiency, reduce gear lash variation, and ensure smooth, quiet operation even under high speed, high pressure, or contaminated conditions.

Working Principle

  1. The outer gear drives the inner gear. As the gears rotate, the changing clearance draws liquid into the pump chamber and presses it to the outlet via gear meshing.
  2. Built-in radial and axial pressure compensation devices minimize gear lash variation, maintaining efficiency and stable output.
  3. Optimized design and premium materials ensure high strength, low noise, and resistance to contamination.

Features

  1. High working pressure: Up to 35MPa, ideal for demanding hydraulic systems and heavy-load conditions.
  2. High volumetric efficiency: Maintains efficiency at low speeds and low viscosity fluids, thanks to pressure compensation devices.
  3. Low pressure pulsation: Ensures stable flow and pressure output, reducing vibration and risk of equipment failure.
  4. Low noise: High-strength materials and optimized gear design minimize noise, suitable for noise-sensitive environments.
  5. Wide speed range: Operates from 200 rpm to 3000 rpm, adaptable to varied working conditions and loads.
  6. Strong anti-pollution ability: Performs reliably even in contaminated oil conditions, with long service life in harsh environments.

Applications

  1. Plastics machinery: Stable hydraulic support for precision processing.
  2. Leather machinery: Accurate and stable pressure for production processes.
  3. Pressure machinery: Suitable for high-power, high-pressure transmission.
  4. Metallurgical machinery: Withstands high-pressure loads in hydraulic systems.
  5. Forklifts: Reliable hydraulic power source for lifting and handling equipment.
  6. Servo frequency drive energy saving systems: Integrates with servo and frequency control for optimized energy efficiency.