Spraying device for municipal engineering

The utility model discloses a spraying device for municipal engineering, and belongs to the field of tree care automation equipment. A driving motor is embedded in the outer end of the mounting plate, a gear is arranged on an output shaft of the driving motor, the gear is meshed with the gear ring, controls the driving motor to rotate and drives the gear to rotate, and due to the fact that the gear is meshed with the gear ring, rotation of the driving motor drives the rotating mechanism to rotate around the gear ring, spraying of the tree by the whitewashing device is achieved; the portions, on the two sides of the two first installation rods, of the arc-shaped supporting plate are each provided with a second installation rod, the two second installation rods are each provided with an arc-shaped protection plate in a penetrating mode, and by arranging the arc-shaped protection plates, when the spraying head sprays materials to trees, the protection plates can effectively prevent the situation that coating dri