Grain hot-blast stove with automatic feeding function

The utility model discloses an automatic feeding grain hot-blast stove, which belongs to the field of grain drying and comprises a rack, an automatic feeding pipe is fixedly mounted on the inner wall of the rack, a first round hole and a second round hole are symmetrically formed in the surface of the rack, an electromagnet is fixedly mounted at an opening of the first round hole, and a magnetic disc is slidably mounted on the inner wall of the first round hole. A first supporting rod is fixedly installed on the surface of the magnetic disc, a limiting frame is fixedly installed on the surface of the first supporting rod, a filter screen is fixedly installed on the surface of the limiting frame, pulse current is connected through an electromagnet, the electromagnet can intermittently attract the magnetic disc, and under the deformation effect of a first spring, the filter screen can be driven to oscillate; and under the action of a hot-air blower, the grains can be dried, a clamping plate can be pushed to mov