Table of Contents

1. Introduction
2. Principle of Operation
3. Components of Metering Diaphragm Pumps
4. Technical Specifications
5. Advantages of Using Metering Diaphragm Pumps
6. Depamu Company Solutions
7. References

Introduction

The metering diaphragm pump is an essential device in industrial and chemical processing applications. These pumps ensure precise fluid delivery and are known for their durability under harsh conditions. Understanding their mechanics is key to optimizing their use in various industries.

Principle of Operation

A metering diaphragm pump operates by employing a reciprocating diaphragm. The pump's operation cycle involves intake, compression, and discharge phases. The diaphragm is actuated mechanically or hydraulically, creating a variable volume in the pump chamber. This leads to pressure differentials that facilitate fluid movement.

Mechanical vs. Hydraulic Actuation

In mechanical diaphragm pumps, the diaphragm is directly connected to a drive mechanism, typically a crankshaft. In hydraulic diaphragm pumps, hydraulic fluid is used to move the diaphragm, offering consistent pressure and reducing mechanical stress on the diaphragm.

Components of Metering Diaphragm Pumps

• Diaphragm: Typically made from PTFE or rubber compounds for chemical resistance.
• Check Valves: Ensure unidirectional flow and prevent backflow.
• Drive Mechanism: Converts rotary motion into reciprocating motion.
• Flow Adjustment Mechanism: Allows precise control of fluid delivery, often via stroke length or frequency adjustments.

Technical Specifications

Metering diaphragm pumps are characterized by parameters such as flow rate, pressure capacity, and material compatibility.

• Flow Rate: Ranges from 0.5 to 8000 liters per hour.
• Pressure Capacity: Can withstand pressures up to 1500 bar.
• Material Compatibility: Common materials include PVDF, stainless steel, and Hastelloy for handling abrasive or corrosive fluids.

Advantages of Using Metering Diaphragm Pumps

• High accuracy in dosing applications.
• Capability to handle a wide range of fluid viscosities and temperatures.
• Corrosion resistance due to high-grade materials.

Depamu Company Solutions

Depamu offers a range of metering diaphragm pumps designed for high precision and durability. Their solutions include:

• DM Series: High pressure pumps suitable for chemical injection with a capacity up to 1500 L/h.
• DH Series: Engineered for high viscosity fluids, capable of pressures up to 1000 bar.
• Customized Solutions: Tailored pumps for specific industrial applications, ensuring compatibility and efficiency.

References

1. Smith, J. (2020). Fluid Mechanics in Industrial Processes. Industrial Publishing.
2. Johnson, R. (2018). Advanced Pump Technologies. Academic Press.
3. Depamu Company. (2023). Product Catalog and Technical Specifications. Depamu Official Website.