Study On Flow Field And Experiment Of Non-contact Vortex Negative Pressure Carrier

In the industrial manufacturing process, the non-contact handling technology has wide application prospects and important insignificance of research because of its advantages such as non-contact, no surface scratching and no static electricity. Now the non-contact handing technologies having been adopted are mainly electromagnetic, ultrasonic, air suspension, etc. The air suspension technology is divided into two types: blowing and negative pressure adsorption. In this paper, the following works were conducted about the flow characteristics of non-contact vortex negative pressure carrier:First, the working principle of non-contact vortex negative pressure carrier was stated and the radial pressure distribution formula of flow field was derived. The results were compared with simulation and experiment results, it is noted that the curves anastomose preferably well with each other. And the comparison verified the accuracy of the deduced pressure distribution formula.Second, the three-dimensional flow field simulation models based on the different structural carriers were built with the Gambit software, and unstructured grids were used; the RNGκ-εturbulent model provided by the FLUENT software was chose for calculation. Based on the calculation results, the analysis on the pressure field, velocity field and absorbability was conducted in different working conditions. At last, the influence factors and variation rules of vortex adsorption negative pressure effect were obtained.In addition, in order to verify the accuracy of the theoretical simulations, the pressure and the lifting force experiment rigs were designed and built. The experiment on the pressure field and the lifting force of different structural carrier was conducted in different working conditions, and the experiment results were compared with the theoretical calculation and simulation results.At last, the handling plate composed by a number of the same structure carrier was designed and made, the handling experiment was built for the test of the handling effect. The experiment verified the feasibility of non-contact negative pressure handling.