| 摘要 |
To improve the work environment by preventing a larger amount of a powder compounding agent from being discarded as power dust and by returning the powder compounding agent into a kneading tank by capturing said powder compounding agent by employing a simple means in closed pressure type kneader. Also to bring the compound quality closer to the design quality by drastically increasing the valuable collection rate. A recovery device for collecting an ejected powder compounding agent is installed on a closed pressure type kneader for kneading a kneading material along with a powder compounding agent in a kneading tank by rotating a kneading rotor. In the recovery device, a tubular air bag capable of expanding and contracting is connected to the side surface of the surrounding wall of the kneading tank with a ventilation chute between the air bag and the surrounding wall, the surrounding wall surrounding the periphery of a pressurized lid rising/lowering path. A branching duct capable of connecting to and being disconnected from the outside is connected to the top of the air bag, and a filter tube for filtering and capturing the powder compounding agent carried by a gaseous body flowing from the side of the kneading tank is disposed in a suspended manner within the air bag. As a consequence, it is possible to return the powder compounding agent captured by means of the filter tube to the kneading tank by means of the pressurized air flow accumulated in the air bag. |
