JPS6476724A - High pressure jet cleaning apparatus - Google Patents

Abstract

PURPOSE:To obtain a high pressure jet cleaning apparatus which can obtain uniform cleaning effect by equalizing high pressure water amount per unit angle for receiving an article to be cleaned and secured on a rotary cleaning table and relative speeds at its rotary center and its periphery. CONSTITUTION:The minimum condition for cleaning the whole face of an article 1 to be cleaned needs at least one revolution of the article 1 while a nozzle 4 moves at the spot diameter (d) of high pressure water. However, since the distances from the rotating center O are different at the points of r1 and r2, the quantities of the high pressure waters per unit angle are different. Therefore, the scanning velocity of the nozzle 4 is decelerated from the rotating center of the article 1 toward the outer periphery. However, if the rotating speed of the article 1 is constant, the angular velocity directly under the nozzle 4 becomes v1= r1omega, v2 =r2omega, and the relative speeds of the high pressure water and the article 1 are varied. Then, the rotating speed of the article 1 is accelerated or decelerated according to the position of the nozzle 4. Thus, since the angular velocities become the same, the relative speeds become the same at any surfaces of the article 1.