Analysis of washing modes of metal tin cans outer surface in jet-type washing machines

7th International Conference: Modern Technologies For Non-Destructive Testing

Mayorov, A.V.^1 ; Yanukov, N.V.^1 ; Mikheeva, D.A.^1 ; Yaytseva, N.E.^1 ; Lukina, D.V.^1

Mari State University, Yoshkar-Ola, Russia^1

关键词: Alkaline solutions;    Hydrodynamic modes;    Main parameters;    Outer surface;    Process efficiency;    Solution concentration;    Washing efficiency;    Washing solution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/457/1/012001/pdf
DOI  :  10.1088/1757-899X/457/1/012001

来源: IOP

【 摘 要 】

The main parameters of jet washing of cans are: the concentration of the alkaline solution and its temperature, the pressure of the solution at the nozzle, the shape and dimensions of the nozzle opening, the angle of the direction of the jet toward the surface being cleaned, the distance from the water jet nozzle to the surface of the washable cans. The study of these parameters was carried out on a special experimental setup equipped with instrumentation. Dependence of washing efficiency on solution ressure given to the cap with different diameters of its holes was found. Furthermore, it is established that the process efficiency decreases with increase of pressure for more than 3 kg/cm 2, as a certain hydrodynamic mode of jet percussion action begins at the boundary with the surface being cleaned. Cleaned surface becomes larger with increase of concentration and temperature of washing solution. Increase of solution concentration for more than 3% and its temperature for more than 70÷75°C do not promote intensification of the process. Cleaned surface depends on angle of jet direction at the point of its strike with the can surface. This dependence represents the fact that the cap should be placed in relation to transported cans in such a way that the jet would be always at right angle to the dirty surface.