Stirring unit operation is a widely used, its complexity is in its principle involves a variety of process fluid mechanics, heat transfer, mass transfer and chemical reactions. Essentially the mixing process is carried out in a single momentum flow field passed or include process momentum, heat and mass transfer and chemical reactions, and stirrer the stirring medium is obtained by a suitable flow field and its mechanical energy input devices. Thus the flow field problems and stirring energy problem has been a major subject of the mixing process under study. The purpose of the mixing process different operations and what kind of flow field, we need to supply much of the energy and various types of agitator blades can provide the kind of flow field, supplying much of the energy of these interrelated issues not fully resolved. According to the results of current research and production practices, discussion around this issue is still very necessary. First problem encountered is to understand the characteristics of the mixing process, and the various processes of stirring What are the requirements, which are the starting point of the agitator selection. To make the selection, should analyze the function of the agitator blades, you should be aware of energy agitator blades offer. The mixing process itself requires external supply much of the energy to complete, it is very important data, but the results of the current study can not completely solve the problem, the information is very small. As certain types of power agitator blades in certain physical properties of the medium to certain operating parameters that is necessary to operate the stirrer power, there are a lot of information can be used to calculate. The usual practice is that if the agitator paddle type mixing process can cause a desired flow condition, to achieve the purpose of stirring, the stirrer shaft power consumption required for the normal operation of a continuous mixing process is obtained from the stirrer power, not to say that the energy supply more or less, is not the best condition. This question directly determine the stirring energy equipment. Often mixing process equipment enlarge the main problem is to solve the identified container, amplification and operating conditions. Currently this regard, there are still other issues guidelines on how the selected zoom. Since the mixing process depends on the normal operation of the agitator, of course, the structure of the agitator, the intensity of the problem can not be ignored. The stirring varied operations, but also there are many types of stirrer. With a variety of types in attachments can control the flow of state after state, it enables the flow and energy supply situation appears more change, more conducive to strengthening different processes. A typical type of a paddle agitator blades, turbine type, push, Buruma gold style, teeth-studied anchor type, frame type, ribbon, screw the mixing process and other needs of a variety of advanced precision test equipment, test parameters have been getting lately can add more, which promoted the research work stirred theory, but still a lot of unresolved issues. Currently more than an agitator design is based on the experimental data some rare conditions, to achieve the purpose of the best design is still difficult. Looks forward to the mixing process can be closely combined with theoretical research and practical technology, the design of more effective, making the process more reasonable. Dezhou Dekai slowdown transmission Machinery Co., Ltd. 30 years of production history, the main manufactured products with a stirrer, a stirrer, gear, rack, couplings, mechanical seals, agitator shaft mixing device such as a set of thousands of varieties, professional production of a variety stirrer, a stirring device, the second plane enveloping worm reducer, cone enveloping gear, arc tooth worm reducer, cycloid reducer, gear reducer, and other major series of thousands models reducer. 

palabras clave: The stirring device, the stirring means the stirring process,