Kneading tank inversion discharging sealed pressurized type kneading machine

A kneading tank inversion discharging sealed pressurized type kneading machine for high-viscosity materials to be kneaded comprising:

• a kneading tank having a stocking opening that is provided in an upper surface thereof and made closable by an openable and closable pressurizing lid;
• and two rotating kneading rotors provided in parallel in the kneading tank, the kneading tank being capable of inverting about an axis of one of the kneading rotors for discharging kneaded materials,
• wherein opening walls having inner surfaces along which a circumference of the pressurizing lid ascends and descends are provided so as to surround four sides of the stocking opening in an upper part of the kneading tank, the opening walls including a front wall positioned at an inversion side of the kneading tank, and a lower end of the front wall is rotatably attached to the kneading tank with a hinge in order that the front wall is suspended downward from the kneading tank when the kneading tank is inverted, and
• the kneading tank is capable of inverting in a range of 90 to 120° from a position at which the stocking opening faces upward.