The invention discloses an
air cushion pressure regulation device for a fluid pulp box and a regulation method. The regulation device comprises a pressure regulation
barrel, a pressure regulation
pipe and a
standard ruler, the pressure regulation
pipe is arranged on the middle part of the pressure regulation
barrel and its lower end extends into the pressure regulation
barrel, the upper end of the pressure regulation
pipe is communicated with an
air cushion chamber of the fluid pulp box, the
standard ruler is fixed on the top face of the pressure regulation barrel and is arranged in parallel with the pressure regulation pipe; a supplement
water pipe is arranged on the upper side of the pressure regulation barrel, and an overflow pipe is arranged on the side wall of the pressure regulation barrel. The method comprises the steps that the depth of the pressure regulation pipe extending into the water in the pressure regulation barrel is regulated in advance, so that the depth of the pressure regulation pipe extending into the water is the same as the height of a
water column corresponding to the
air cushion pressure; in the using process of the fluid pulp box, when the air
cushion pressure changes, through the regulation of the opening extent of an air venting outlet, the size of the air
cushion pressure and the depth of the pressure regulation pipe extending into the water are kept stable. According to the air
cushion pressure regulation device and the regulation method, the stability of the air cushion pressure in the air cushion room is effectively maintained, the device is simple in structure, the regulation cost is very low, and the adoption of precision control components and complex control systems is not necessary.