Table of Contents

1. Introduction
2. Principles of Mechanical Diaphragm Dosing Pumps
3. Components and Functions
4. Operational Mechanics
5. Performance Specifications
6. Applications of Mechanical Diaphragm Dosing Pumps
7. Depamu Company Solutions
8. Conclusion
9. References

Introduction

A mechanical diaphragm dosing pump is a precision instrument used for dispensing precise quantities of liquids. Typically employed in chemical processing, water treatment, and food and beverage industries, these pumps ensure accurate dosing critical to various industrial processes.

Principles of Mechanical Diaphragm Dosing Pumps

The operation of a mechanical diaphragm dosing pump is based on the displacement principle. The diaphragm actuates within a pump chamber, creating pressure that propels the liquid through the outlet while preventing backflow via inlet and outlet valves.

Components and Functions

Key components of a mechanical diaphragm dosing pump include:

• Diaphragm: Typically made of elastomers or composite materials, it flexes to create a pumping action.
• Drive Mechanism: Converts rotary motion into linear motion to actuate the diaphragm.
• Valves: Inlet and outlet check valves manage the flow into and out of the pump chamber.
• Pump Chamber: Houses the diaphragm and controls the volume of liquid moved per pump cycle.

Operational Mechanics

A mechanical diaphragm dosing pump operates with a reciprocating mechanism. The pump's drive motor rotates, translating into the linear movement of the diaphragm by a cam or crank mechanism. This movement causes the diaphragm to pull fluid into the chamber during its suction stroke and expel fluid during its delivery stroke. The process involves precise stroke length adjustment, typically ranging from 0.5 to 10 mm.

Performance Specifications

Mechanical diaphragm dosing pumps are characterized by specific parameters including:

• Flow Rate: Typically ranges from 0.1 to 1000 liters per hour, adjustable based on stroke length and frequency.
• Pressure Capacity: Generally supports pressures up to 12 bar, adaptable for higher demands with optimized configurations.
• Accuracy: Ensures dosing accuracy within ±1% deviation, crucial for precision applications.
• Operating Temperature: Operates efficiently within temperatures from -10 to 60 degrees Celsius.

Applications of Mechanical Diaphragm Dosing Pumps

These pumps are widely used in:

• Water and wastewater treatment for chemical dosing.
• Chemical manufacturing for controlled reactant addition.
• Pharmaceutical industries for precise ingredient mixing.
• Food and beverage for flavoring or additive dosing.

Depamu Company Solutions

Depamu offers a range of mechanical diaphragm dosing pumps engineered for reliability and precision. Their solutions include:

• DPJ Series: Known for high-accuracy dosing with flow rates ranging from 0.1 to 500 L/hr and pressures up to 20 bar.
• DPC Series: Features enhanced chemical resistance for aggressive fluids, available with customizable diaphragm materials.
• DPM Series: Compact design for space-limited installations, providing efficient solutions in diverse environmental conditions.

Conclusion

Mechanical diaphragm dosing pumps are indispensable in achieving accurate fluid management across various industrial sectors. Their design and operational efficiency ensure they meet the rigorous demands for precision and reliability.

References

• Flow Control Handbook by Philip Skousen, for in-depth understanding of dosing pump mechanisms.
• Manufacturer specifications and data sheets from Depamu Company for detailed product insights.
• Industrial Pumping and Air Compressors by Igor J. Karassik for broader context on industrial pump applications.