What is a pneumatic diaphragm pump used for?

Introduction

Pneumatic diaphragm pumps, often referred to as air-operated double-diaphragm (AODD) pumps, are used in a wide range of industrial applications due to their versatility and efficiency in handling diverse materials. Known for their unique design, these pumps operate without electricity, using compressed air to transfer liquids of varying viscosities and chemical compositions.

Working Principle of Pneumatic Diaphragm Pumps

Pneumatic diaphragm pumps operate using a reciprocating action driven by compressed air. The pump consists of two flexible diaphragms connected by a shaft. When air is directed into one diaphragm, it moves outward, creating suction that draws fluid into the chamber. The fluid is then pushed out as the air pressure shifts to the opposite diaphragm. This alternating action enables continuous fluid movement without the need for complex controls.

Applications of Pneumatic Diaphragm Pumps

• Chemical Processing: Handling corrosive and abrasive chemicals safely.
• Food and Beverage Industry: Transferring viscous and shear-sensitive products.
• Oil and Gas: Moving slurries, brine, and other viscous fluids.
• Mining: Transporting slurries and dewatering operations.
• Water Treatment: Handling sludge and chemical dosing.

Advantages of Using Pneumatic Diaphragm Pumps

• No Electricity Required: Ideal for hazardous or remote areas.
• Self-Priming: Can prime themselves automatically without external assistance.
• Dry Run Capable: Able to run dry without incurring damage.
• Variable Flow Rates: Can adjust flow rates by simply altering air pressure.
• Handling Solids: Capable of moving liquids with suspended solids effectively.

Depamu Company Solutions

Depamu offers innovative pneumatic diaphragm pump solutions tailored to various industrial needs. Their product lineup includes:

• Air-Operated Diaphragm Pumps: Designed for high efficiency and reliability.
• Customizable Pump Systems: Solutions tailored to specific operational requirements.
• Corrosion-Resistant Designs: Using high-end materials for handling aggressive chemicals.
• Automation Integration: Advanced systems integrated with automated control for precision.

Technical Specifications and Parameters

The following are key parameters for assessing pneumatic diaphragm pumps:

• Flow Rate: Ranges typically from 1 L/min to over 1,000 L/min.
• Pressure Capacity: Can operate efficiently under pressures up to 7 bar (101 psi).
• Suction Lift: Capable of a suction lift up to 8 meters (26 feet) dry and 9 meters (29.5 feet) wet.
• Material Construction: Available in materials such as polypropylene, PVDF, and stainless steel.
• Discharge Size: Varies from 1/4 inch to 3 inches or more, dependent on model and application.

References

1. Smith, J. (2021). Pneumatic Diaphragm Pump Fundamentals. Industrial Equipment Journal.

2. Johnson, A., & Brown, L. (2020). Applications of Diaphragm Pumps in Modern Industry. Fluid Dynamics Quarterly.

3. Depamu Corp. (2023). Product Catalog and Solutions. [Online] Available: https://www.depamu.com