| 摘要 |
Arrangement at a stuffing box unit (P) in a pipe system under an over atmospheric pressure, e.g. a radiator valve of a heating or cooling system, which prevents that a spindle (4) arranged in a stuffing box sealing (P) gets stuck due to precipitates. The arrangement is like a cartridge and the valve spindle is controlled axially, which is a common solution in connection with thermostat valves for radiators. The arrangement works like a tightly fit sliding bellows (10) around the spindle (4) which prevents the establishment of precipitates on the sliding surfaces of the valve spindle restricting its movement. The one end of the bellows is fixed to the spindle while its other end is thickened in order to create a sealing ring and as such works like a conventional O-ring sealing, stuck in a tight seat in the stuffing box house. The created compression of the sealing ring against the valve spindle gives the desired sealing, when supplemented with a lubricant between the bellows and the valve spindle. |
