MagMax~(TM) ― the development of a revolutionary sealless pump

摘要

MagMax~(TM) is a revolutionary new product, drawing on the best features of Mechanical Sealed Pumps (MSP), Canned Motor Pumps (CMP) and Magnet Drive Pumps (MDP) to deliver a totally unique product that is set to change the pumping market. The MagMax~(TM) Canned Magnet Drive Pump (CMDP) was launched to pump specifiers and users Worldwide in June 2001, since then it has received critical acclaim for its combination of simplicity of design (and hence low cost of ownership) of a Magnet Drive Pump and true Secondary Containment of a Canned Motor Pump. This paper presents the technical challenges that were encountered during the development of MagMax~(TM) and discusses the ways in which solutions to these challenges were developed. In particular, this paper discusses the following: 1. The development of a unique high efficiency motor (greater than 10% more efficient than typical canned motor pumps). 2. The development of the 'Vapour Detector' that, uniquely, detects the onset of dry running before pump failure has time to occur. 3. How the design concept allows for the use of Silicon Carbide bearings, as standard, without the necessity for any special bearing alignment techniques. 4. Achievement of certification for use in potentially explosive atmospheres. 5. Development of a product that utilises components and manufacturing processes from HMD/Kontro's existing magnet drive pump ― hence reducing manufacturing cost, lead-time and spare parts inventory. The paper then concludes by discussing the benefits that MagMax~(TM) brings to the user.