Dust removing device for road dust-absorbing road sweeper

The utility model discloses a dust removing device for a road dust-absorbing road sweeper. The dust removing device comprises a sweeping device, a dust absorbing tube, a dust collecting cabin and a water tank, wherein a vacuum pump is arranged outside the dust collecting cabin; an air suction tube of the vacuum pump is connected with the dust collecting cabin; an air outlet tube of the vacuum pump extends into a filtering barrel in a dust removing hopper; the bottom of the dust removing hopper is connected with the water tank through a connecting tube; the top of the dust removing hopper is provided with an air outlet; the dust removing hopper is provided with a spraying device above the filtering barrel; a water pump is used for supplying water to the spraying device through the water tank; the water inlet of the water pump is provided with a first filter screen; a second filter screen is arranged between the spraying device and the filtering barrel; the second filter screen is provided with a concave-down bent part; and the bent part is aligned with the side edge of the filtering barrel, so that water falling off from the spraying device can be used for driving the filtering barrel to rotate. According to the dust removing device, garbage and dust sucked through the road sweeper can be separated and collected, so that secondary pollution on the surrounding environment is lowered, and the air quality is improved effectively.