The application of gear pumps in the field of fluid transportation

Gear pumps are widely used in the field of fluid transportation, and their simple structure, high reliability, and low cost make them the preferred choice for many industrial scenarios. The following are the main applications and characteristics of gear pumps in fluid transportation:

1. Petroleum and chemical industry

Fuel transportation: used for the transportation of viscous liquids such as diesel, lubricating oil, and heavy oil, such as gas stations and oil tanker unloading.

Chemical media: Transport solvents, resins, additives, etc. (materials need to be selected according to corrosiveness, such as stainless steel gear pumps).

Features: Corrosion resistant design, capable of handling high viscosity fluids (some models can reach over 100000 cP).

2. Food and beverage industry

Sanitary applications: transporting syrup, chocolate, edible oil, dairy products, etc., must comply with FDA or EHEDG standards.

Features: Made of stainless steel material, easy to clean design, avoiding fluid pollution.

3. Pharmaceuticals and cosmetics

High precision transportation: used for shear sensitive fluids such as liquid medicine, gel and essence.

Features: Low pulsation, low shear design to prevent material denaturation.

4. Machinery and Manufacturing Industry

Hydraulic system: provides hydraulic oil power for machine tools, injection molding machines, etc.

Coolant circulation: transporting cutting fluid, grinding fluid, etc.

Features: High pressure resistance (some models can reach up to 300 bar), high volumetric efficiency.

5. Architecture and Engineering

Asphalt transportation: Gear pump for transporting molten asphalt in high-temperature environments (requiring heating and insulation design).

Adhesive coating: precise delivery of sealant, epoxy resin, etc.

Features: High temperature resistance, wear-resistant material (such as silicon carbide seal).

6. Other special applications

Ship: transporting fuel and bilge water.

Agriculture: pesticide spraying, fertilizer transportation.

Environmental Protection: Sludge Transportation in Wastewater Treatment.

Advantages and disadvantages of gear pumps

advantage:

Compact structure and easy maintenance.

Strong self-priming ability, suitable for high viscosity fluids.

Valve free design, suitable for media containing particles (special design required).

Disadvantages:

Fixed displacement, flow regulation relies on rotational speed.

Sensitive to fluid cleanliness (particles may wear gears).

High pressure may generate significant noise.

Selection precautions

1. Fluid properties: viscosity, corrosiveness, solid content.

2. Working conditions: temperature, pressure, flow requirements.

3. Material compatibility: NBR sealing is not resistant to ketone solvents.

4. Special requirements: Explosion proof, hygiene certification, etc.

Gear pumps play an important role in fluid transportation due to their wide adaptability and good economy, but the appropriate type (such as external gear pumps, internal gear pumps, or magnetic driven gear pumps) needs to be selected according to specific working conditions.