Timed and quantitative collection device used for atmospheric dust fall

The invention relates to a timed and quantitative collection device used for atmospheric dust fall. The device is composed of a top cover, a buffer chamber, a bracket, a settling chamber, a collection chamber, a self-sealing bag and a hairbrush. The device can be used for collecting a atmospheric dust fall sample in certain time and certain area, so that the amount of atmospheric dust fall in unit time and unit area can be calculated and further dust fall pollution load can be researched. The device is simple in operation, is low in cost and is less in interference, so that defects of devices in the prior art can be overcome well. The device has a wide application prospect in the field of atmospheric dust fall pollution researching.