| 摘要 |
Hammer actuated by means of a hydraulic system, suitable for being used in dusty environments, in particular as the crust-breaker of aluminum electrolysis pots, comprising a device capable of generating an overpressure inside the bottom chamber (7) and of permanently causing a stream of filtered air to flow through the clearance (8) between the tool (6) and the sleeve (9), with said device being constituted by an intake duct (1), a filter (2), a non-return valve (3), a connection duct (10) and a non-return valve (11). |
