Air operated double diaphragm pumps make a comeback气动双隔膜泵东山再起

Air operated double diaphragm pumps provide an interesting sealless alternative to centrifugal and positive displacement pumps, and are invaluable for applications where it is impossible or dangerous to use electricity.气动双隔膜泵提供了一个有趣的sealless替代离心式和容积式泵，并应用了宝贵的地方是不可能或危险的用电。 First introduced more首先介绍更多
than 40 years ago, more recent innovations in pump design and the construction of the diaphragms are boosting demand for these pumps. 40多年前，最近的创新，泵的设计和建造的隔膜是提高对这些泵的需求。 Tom Rozee provides the details.汤姆Rozee提供的细节。

Introduction 导言
While air operated double diaphragm (AODD) pumps have never been away, their popularity has been making something of a comeback over recent years.虽然气动双隔膜泵（AODD）水泵从来没有离开，他们的知名度一直在近年来的东山再起。 Indeed there are many manufacturers of AODD pumps throughout the world.事实上，有许多的AODD泵制造商在世界各地。

Introduced over 40 years ago, the AODD pump has seen a number of innovations and offers an interesting sealless, displacement alternative to centrifugal pumps. 40年前推出的AODD泵出现了一些革新，并提供了一个有趣的sealless，流离失所替代离心泵。 AODD pumps are not always the first choice in pump selection, yet they have found applications in a wide range of industries. AODD泵并不总是选择在泵的第一选择，但他们发现，在一个广泛的行业应用。

These include chemicals, food processing, paints, electronics, construction, industrial maintenance, utilities, processing, wastewater and sludge processing, and mining.其中包括化工，食品加工，涂料，电子，建筑，工业维修费，水电费，处理，废水和污泥处理，采矿。 With interesting variations on design principles and new diaphragm designs being有趣的变化与设计原则和设计被新的隔膜
introduced, these pumps offer a number of benefits that set them apart from alternative pumping methods.介绍，这些泵提供了从不同的一套方法，他们除了抽水很多好处。

They are self priming, will run dry without damage and need no electricity.他们是自吸，将运行干燥无损伤，不需要电力。 Powered entirely from compressed air, they本站完全由压缩空气，他们
can be used in a number of applications where electricity is not available or must not be used, such as hazardous or explosive environments or at remote sites.可以用在一个应用中电力不可用数字或不能使用，例如危险或爆炸的环境中或在远程站点。 AODD pumps come in a variety of sizes, shapes and materials of manufacture. AODD泵有各种大小，形状和制造各种材料。

How the AODD pump works 如何AODD泵厂
The basic principle of operation of the AODD pump is shown该泵的AODD运作的基本原则显示 here这里 . 。