Sheet cleaning device and method

A sheet cleaning device comprising:

• a soak unit configured to accommodate a soak solution and a sheet such that the sheet is subjected to static cleaning by the soak solution,
• a cleaning solution cleaning unit configured to rinse the sheet with a cleaning solution,
• a water cleaning unit configured to rinse the sheet with water, and
• a drying unit configured to perform a drying treatment to the sheet after rinsing,
• wherein the sheet cleaning device further comprises a conveying member, which is configured to receive a soaked sheet from the soak unit, and convey the soaked sheet through the cleaning solution cleaning unit, the water cleaning unit, and the drying unit, successively,
• wherein the cleaning solution cleaning unit, the water cleaning unit and the drying unit are stacked successively in a vertical direction from bottom to top to form a columnar structure, each of the cleaning solution cleaning unit, the water cleaning unit, and the drying unit comprising a tank that spirals upwards around a center of the columnar structure, such that the cleaning solution cleaning unit, the water cleaning unit, and the drying unit as a whole exhibit a spiral columnar structure.