CBF300-CB730安装使用说明书(英文版).docVIP

Water-ring Vacuum Pump and Outfit Installation and Operation Instruction CBF300CBF730 Guangdong Foshan Pump Factory Co., Ltd 2005 Dear KENFLO Customers: Thank you for purchasing KENFLO products. We will try to provide you with our best services to achieve our mission of customer satisfaction. This instruction will provide a clear guideline for how to install, operate and maintain 2BE1 303~705 water-ring pumps. Before using pumps, technicians and operators should read it carefully for many years of reliable service. Adequate safety precautions should be taken to prevent direct or indirect hurt to human or the machine in the process of transportation, assembly, operation and maintenance etc, even if there is no clear indication of attention items and technical requirements in this manual. 1 General Introduction 2BE1 water-ring vacuum pumps are of single-stage and single-acting configuration, and generally used for sucking gases which contain no solids, and are dissolved slightly or insoluble in service liquid. When the wetted components of a vacuum pump are made of or coated with corrosion free materials, it can suck corrosive gases or use corrosive liquids as its service liquid. Explanation of Model Number 2 Principle OF operation and CONSTRUCTion 2.1 Principle of Operation Figure 1 illustrates working principle of a vacuum pump. The impeller is assembled eccentrically inside the nearly circular pump casing. When the impeller revolves in the direction indicated in Fig.1, the liquid is thrown outwards under centrifugal force to form a liquid ring. As a result, a crescent chamber area is developed between impeller hub and inner surface of the liquid ring. As rotation proceeds from point ‘A’ to point ‘B’, the chamber area between adjacent vanes will grow larger progressively, i.e. vacuum is set up and gas is drawn in via the inlet port. And as rotation proceeds from point ‘C’ to point ‘A’, the corresponding chamber will become sma