Electric chemical pumps are essential devices used in chemical, pharmaceutical, environmental, and manufacturing industries to safely and efficiently transfer various liquids. Unlike ordinary industrial pumps, electric chemical pumps are designed to handle corrosive, flammable, toxic, or high-temperature fluids with high reliability and zero leakage.

This guide explains the main types of electric chemical pumps, their working principles, key features, and typical applications, followed by a comparison table that helps you choose the right pump for your process.

⚙️ What Is an Electric Chemical Pump?

An electric chemical pump is a pump powered by an electric motor that converts electrical energy into mechanical energy to move liquids. These pumps are widely used to handle acids, alkalis, solvents, and wastewater in chemical plants and industrial facilities.

Depending on the pumping principle and sealing design, electric chemical pumps can be divided into several main types, such as centrifugal pumps, magnetic drive pumps, diaphragm pumps, and screw pumps. Each type is suited for specific liquids and operating conditions.

🧩 Main Types of Electric Chemical Pumps

Below is a detailed overview of the most common types of electric chemical pumps used in modern industries.

1. Electric Centrifugal Pump

Working Principle: Converts rotational energy from the impeller into kinetic energy to move liquid from inlet to outlet.
Key Features: Simple design, high efficiency, and suitable for large flow and low-viscosity liquids.
Applications: Circulating cooling water, solvents, acid-base solutions, and general chemical liquids.
Materials: Stainless steel, cast steel, fluoroplastic.

2. Electric Magnetic Drive Pump

Working Principle: Uses magnetic coupling to transmit torque without mechanical seals, achieving leak-free operation.
Key Features: 100% leak-proof, ideal for corrosive, toxic, or volatile fluids.
Applications: Corrosive acids, flammable solvents, and hazardous chemicals.
Materials: Fluoroplastic, 316L stainless steel.

3. Electric Self-Priming Chemical Pump

Working Principle: Uses stored liquid and air–liquid mixing to create vacuum suction for automatic priming.
Key Features: No foot valve needed, flexible installation, can handle light solids.
Applications: Tanker unloading, wastewater transfer, acid or alkali circulation.
Materials: Stainless steel, fluoroplastic, cast iron.

4. Electric Metering Pump

Working Principle: The electric motor drives a plunger or diaphragm to move back and forth, providing precise dosing.
Key Features: Adjustable flow, high dosing accuracy, and reliable continuous operation.
Applications: Water treatment dosing, chemical reagent injection, pH control.
Materials: Engineering plastic, stainless steel.

5. Electric Screw Pump

Working Principle: Uses the rotation of a screw rotor inside a stator to push the liquid forward smoothly.
Key Features: Suitable for high-viscosity or particle-containing fluids, steady and pulsation-free flow.
Applications: Oil, sludge, glue, and viscous liquids.
Materials: Stainless steel, carbon steel, rubber stator.

6. Electric Diaphragm Pump

Working Principle: The motor drives a connecting rod to move the diaphragm, creating suction and discharge cycles.
Key Features: Self-priming, dry-running capable, corrosion-resistant, handles solids.
Applications: Chemical wastewater, coatings, acids, and pharmaceuticals.
Materials: Fluoroplastic, aluminum alloy, stainless steel.

7. Electric Gear Pump

Working Principle: Relies on the meshing of gears to form a sealed volume for fluid transfer.
Key Features: Uniform flow, compact structure, ideal for high-viscosity fluids.
Applications: Lubricating oil, resin, fuel, wax.
Materials: Cast iron, stainless steel, copper alloy.

🧾 Electric Chemical Pump Type and Application Comparison Table

🧠 Application-Specific Selection Guide