PISTON FOR AUTOMATICALLY REGULATING PRESSURES APPLIED TO A HIGH PRESSURE SPRAYER, CAPABLE OF EFFICIENTLY COMPRESSING WATER IN THE HIGH PRESSURE SPRAYER

摘要

PURPOSE: A piston for automatically regulating pressures applied to a high pressure sprayer is provided to minimize the abrasion of an expansion-contraction packing by alternately operating the packing according to the progress direction of the piston.;CONSTITUTION: An expansion-contraction packing(30) is located on the circular plate(11) of a piston body(1). A water path(23) is installed on a lateral plate(2) which is assembled with the expansion-contraction packing. A hollow part(10) is arranged in the piston body. A concave recess(12) is formed on the front side and the rear side of the circular plate in order to support the expansion-contraction packing.;COPYRIGHT KIPO 2011