| 摘要 |
Liquid to be sprayed is held in a container 32 mounted on an intermediate portion 14 of an elongate handle 10. When a valve 24 is open, the liquid flows under gravity through a conduit 21 to discharge into an upwardly facing cup 20 secured to the vertical drive shaft 19 of an electric motor 18 at the front end 15 of the handle 10. The valve 24 is controlled manually with a control cable 28 which also controls the opening and closing of the on/off switch of the power circuit 36,37 for the motor 18, the power source being a battery 40 mounted on the handle 10. The cup 20 has downwardly and outwardly directed holes 45 through the periphery of its bottom wall 42 so that when the motor 18 rotates the cup 20, the liquid in the cup 20 is sprayed out from these holes 45. The handle 10 can be demounted from a wheeled frame 12. The holes 45 are all the same size and the rate of flow of liquid into the cup 20 is constant. The cup 20 is rotated at a constant rate and the spray consists of uniform droplets. The container preferably has an air inlet (56), Figures 7, 8 (not shown), controlled by a pressure-sensitive valve (57) which admits air to the interior of the container at a rate dependent upon the head of liquid pressure therewithin to thereby provide a uniform flow to the valve 24. <IMAGE> |
