Washing and filtering tank and method for washing rubber additive

The invention discloses a washing and filtering tank and method for washing rubber auxiliaries, and relates to the technical field of rubber auxiliaries, the washing and filtering tank comprises a tank body, the top of the tank body is provided with a feeding port, the bottom of the tank body is provided with a discharging port, the discharging port is internally and movably provided with a solid-liquid separation assembly, and the solid-liquid separation assembly is used for filtering and separating solid-phase raw materials and washing liquid; an efficient washing assembly is arranged in the tank body, and a stirring motor is arranged at the top of the tank body. When the washing and filtering tank is used, the middle shaft is driven to rotate through the stirring motor, materials enter the washing inner barrel from the bottom of the washing inner barrel to move upwards through rotation of the spiral blade while stirring and washing are conducted through the stirring rod, meanwhile, the materials are driven