Seed sucker device with adjustable grain number

The utility model discloses a seed sucker device capable of adjusting the number of seeds, and belongs to the technical field of agricultural machinery. Comprising a seed suction plate and a seed suction plate body used for installation, the body is connected with an external negative pressure device, seed suction hole sets are evenly distributed in the seed suction plate, each seed suction hole set comprises 2-3 suction holes arranged in a combined mode, the seed number adjusting assembly comprises an adjusting plate and a driving mechanism, and the adjusting plate is provided with ejector pin sets corresponding to the seed suction hole sets. Each ejector pin group is provided with ejector pins with the number corresponding to that of the adsorption holes, the heights of the ejector pins are gradually reduced in a stepped manner, and the adjusting plate is arranged in the body and can be driven by a driving mechanism to be attached to the seed suction plate, so that the ejector pins sequentially block the se