Ventilation device for soil preparation

The utility model relates to a ventilation device, belongs to the technical field of soil preparation, and particularly relates to a ventilation device for soil preparation, which comprises a collecting bin, a ventilation bin is fixedly connected to the upper surface of the collecting bin, a feeding port is fixedly connected to the upper surface of the ventilation bin, an air inlet fan is arranged on one side of the ventilation bin, and a discharging port is arranged on the other side of the ventilation bin. A fine screening assembly is arranged in the ventilation bin, and the fine screening assembly is partially located in the collection bin; during aeration-drying, large-particle impurities in soil can be screened out, higher drying efficiency and better drying effect are achieved, and the problems that soil samples contain impurities and moisture, are prone to caking, are not beneficial to overall air drying and are not beneficial to subsequent preparation and observation are solved. 本实用新型涉及一种通风装置，属于土壤制备技术