Precipitation tank for optimally controlling vinegar spraying in production of fermented millet vinegar

The utility model provides a precipitation tank for optimally controlling vinegar spraying in fermented millet vinegar production, which comprises a tank body, a maintenance frame, a protective cover,an exhaust pipe, a detachable filter frame structure, a liquid level observation frame structure, scale marks, a blow-off pipe, a blow-off valve, a vinegar spraying outlet pipe, a vinegar discharge valve and a reinforced support frame structure, and the maintenance frame is welded on the right side of the upper part of the tank body; and the protective cover is mounted at the upper part of the maintenance frame through bolts. Stainless steel nets with the thickness ranging from 3 mm to 5 mm are adopted as the filter nets respectively, so that feed liquid entering the tank body from the feeding pipe can be conveniently and slightly filtered in the using process; and the fixed sucker is glued to the lower part of the connecting shaft frame, so that the fixed sucker can be conveniently adsorbed to the ground during