The present disclosure provides a flow control equipment and an automatic refilling system. The flow control equipment includes: a housing, including a discharge hole in a bottom of the housing; a liquid inlet tube connecting with a top of the housing; a motor located in the housing; a flow locking blade and a plurality of flow control blades connected to the motor, where leakage holes of different sizes are formed in the flow control blades, and the motor drives the flow control blades and the flow locking blade to rotate to align the different leakage holes with the discharge hole, or to seal the discharge hole; and a liquid outlet tube connecting with the discharge hole.

A sheet drying apparatus includes a first conveyance portion, a drying portion, a suction fan, an exhaust portion, first and second ducts, a separation fan, a separation duct, a cooling fan, and a cooling duct. The separation fan separates a sheet from the first conveyance portion at a separation position. The separation duct communicates the separation fan with the separation position. The cooling fan cools the suction fan. The cooling duct communicates the cooling fan with the suction fan. The suction fan and the second duct are arranged downstream of the drying portion. The separation fan, the separation duct, the cooling fan, and the cooling duct are arranged downstream of the suction fan and the second duct. The separation duct and the cooling duct are arranged so that at least parts of them overlap with each other as viewed from the width direction horizontally orthogonal to the conveyance direction.