The utility model relates to fire fighting equipment detection technical field discloses a kind of
fire door anti-spraying water
impact tester, including fire hose, the inside left side of fire hose is fixedly connected with round, the inside fixedly connected with cylinder in round, the outside sliding connection of cylinder has
slip ring, the outside right side of
slip ring is fixedly connected with spring a.In the utility model, first,
slip ring is pushed back under the action of
water flow pressure and is slid on cylinder to round inside, let
water flow pass smoothly, when
water flow appears
backflow trend, slip ring will be quickly reset under the action of spring a elasticity, form tight seal, to block reverse water flow, simultaneously, when rotating
handle on top layer moves down, water flow resistance increases by thread transmission to drive pressing plate to move down, inside flow cross-sectional area reduces at this time, water flow resistance increases;Conversely, the
extrusion force of water decreases,
water pressure reduces, it is convenient to adjust and change hose pass
diameter, promote the progress of experiment.