Mechanically Driven Diaphragm Pumps for Use with Gases

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© 1999 by Erich Becker, Managing Director 1966-2000
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by ERICH BECKER

About the Author:

Mr. Erich Becker, as a mechanical engineer upon completion of his degree, began his career as a designer in the vehicle and machine tool industries. Since he joined the company in 1962, Mr. Becker has had a major impact in the development of mechanically-driven diaphragm pumps for gases. In 1966, he succeeded the late Kurt Neuberger as managing director. His son, Martin Becker, took over leadership of the company in the year 2000. Mr. Becker has developed many patented solutions for his company, KNF Neuberger GmbH, which has grown to a worldwide operating group of thirteen subsidiaries, including four production operations, located in Europe, America and Asia. In addition, KNF Neuberger is representatives in major industrial countries.

VULKAN PUBLISHERS, ESSEN

Mechanically Driven Diaphragm Pumps for Use with Gases: [Fundamentals - design - applications] / Erich Becker - Essen:

Vulkan Publishers, 1997

ISBN 3-8027-2184-5

Foreword

Whether in medical technology, environmental protection/analysis, in the laboratory or process engineering, many applications are today unthinkable without the use of mechanically driven diaphragm pumps for gases. Their particular properties such as oil-free, maintenance-free and uncontaminated operation make them suitable for numerous fields of application. Despite their wide distribution, they are treated only marginally, if at all, in the general literature and, up until now, there has been neither a general account nor a comprehensive summary account of these pumps.

The intention of this book is to fill this gap and provide an overview of the diaphragm pumps with mechanical drive. In addition, examples of applications and advice concerning selection of the right pump are included in the subject matter.

This book will serve to inform and stimulate both the engineer constructively working on design plans, and the engineer undergoing training.

Table of Contents:

Foreword

1  Introduction

1.1  A brief glimpse of the past

1.2  A systematic classification of diaphragm pumps with a mechanical diaphragm drive for gases

2.  Design, function and properties of diaphragm pumps for gases

2.1  Design and function of different types of diaphragm pumps

2.1.1  Diaphragm pumps with eccentric drive

2.1.2  Diaphragm pumps with magnetic vibrator systems

2.2  Characteristics of diaphragm pumps

2.3  Fundamentals concerning diaphragms and valves

2.3.1  Diaphragms

2.3.2  Valves

2.4  Regulation of flow rates

2.5  Connection of double-headed pumps

2.6  The development of noise

2.7  Service life of diaphragm pumps

3.  Types of diaphragms

3.1  Basic design

3.1.1  Flat diaphragms

3.1.2  Molded diaphragms

3.1.3  Structured diaphragms

3.1.4  Summary comparison of the flat diaphragm, the molded diaphragm and the structured diaphragm

3.2  Other types of diaphragms

3.2.1  Convoluted diaphragms

3.2.2  Wave diaphragms

3.2.3  Diaphragm with PTFE coating

4.  Special types of diaphragm pumps

4.1  Diaphragm pumps with low leak rates

4.2  Double diaphragm pumps

4.3  Corrosion-resistant diaphragm pumps

4.4  Temperature-resistant diaphragm pumps

4.5  Heated diaphragm pumps

5.  Appendix: High-speed liquid diaphragm pumps

6.  Applications

7.  Advice concerning the selection of a pump

8.  References

9.  Bibliography