Radial sealing valve for automatically discharging liquid contained in tank for spreading sewage on biological treatment filter, has sealing plate set at end of rigid tube, where plate is radially articulated about axle attached to tube

摘要

The device has a sealing plate (2) at an end of a rigid tube (1) connected to an outlet of a tank (13). The sealing plate is articulated radially about a rotation axle (8) attached to the tube, where the sealing plate moves axially along the rotation axle. The sealing plate is pressed against a seat of the tube by a spring (7), and a semi-rigid lip seal (6) is mounted on the seat of the tube to ensure leak tight sealing and self-cleaning of the sealing plate by scraping, where the sealing plate is held in open position by a hook (11).