Sealing device in horizontal screw machine

The utility model discloses a sealing device in a horizontal screw machine, which comprises a rotary drum, and a bearing, a feeding pipe and a liquid discharging cavity are arranged in the rotary drum; the bearing seat is located on the side face of the liquid discharging cavity. The feeding pipe penetrates through the bearing seat and the liquid discharging cavity and then is mounted in the rotary drum; a bearing and a filtering mechanism are arranged on the bearing seat; an oil seal is arranged at the joint of the bearing seat and the rotary drum; the bearing is mounted on the bearing seat;the filtering mechanism is installed on the bearing seat through a fixing piece and located at the front end of the oil seal. According to the utility model, particulate matters in separated liquid are filtered and isolated from entering the bearing seat. The abrasion of the oil seal and the bearing caused by the particulate matters is prevented, and particularly, a particularly obvious effect canbe achieved on separated