A kind of a device is put to negative pressure that is used for minimum particle diameter crop seed

The utility model relates to a kind of a device is put to negative pressure that is used for minimum particle diameter crop seed belongs to modern agriculture scientific experiments technical field. It is including inhaling kind of a dish, negative pressure cavity, cylinder and handle, piston and push rod, it is the rectangle to inhale kind of a dish, and its bottom surface sets up half hole matrix, the center of the hole bottom in each half hole of half hole matrix sets up a through -hole, through -hole UNICOM negative pressure cavity is connected on cylinder and handle, cylinder and handle be the tubulose, the lower part is the cylinder, upper portion is the handle, the middle part sets up a manifold, but manifold coupling hose to aspirator pump, piston and cylinder cooperation, piston one end is equipped with the push rod, and the push rod stretches out from the handle end, and the push rod tip sets up the button, and the push rod is equipped with reset spring. The utility model provides a minimum particle