Patent ID: 9732471
Date: 2017-08-15
CPC Classifications: A47L,B07B,B08B,D21F

Claim:
1. A method for carrying off dirt particles and wastewater from a cleaning head of a dryer in a paper production plant, the cleaning head entraining hot air and collecting dirt particles and wastewater during cleaning of a dryer screen using high-pressure fluid jets, the cleaning head including an opening via which the dirt particles and wastewater exit the cleaning head, said method comprising: rigidly mounting an air-water separation container to the cleaning head in direct vicinity of the opening in the cleaning head, the air-water separation container including an air outlet, a wastewater outlet and an inlet opening for receiving the dirt particles and wastewater from the opening in the cleaning head; moving the cleaning head transversely with respect to the dryer screen so as to entrain the air-water separation container connected to the cleaning head; transporting the hot air, dirt particles and wastewater from the dryer screen to the air-water separation container via the cleaning head over a substantially constriction-free path of substantially constant length as the air-water separation container moves transversely to the dryer screen with the cleaning head, the length of the path being independent of a position of the cleaning head transversely to the dryer screen; collecting the dirt particles and the wastewater in a liquid suspension in the air-water separation container; separating the hot air from the suspension of dirt particles and wastewater in the air-water separation container, said separating occurring in direct vicinity of the cleaning head prior to substantial desiccation or coating of the dirt particles within the dryer; discharging the air from the air outlet in the air-water separation container; and discharging via a hose the suspension from the wastewater outlet in the air-water separation container.