| 摘要 |
The invention relates to a method and a device (2) for pneumatically transporting pulverulent material (4). According to said method, a cylindrical chamber (10, 12), which can be connected to a storage container (6) by a sealable inlet (14, 16) and to a transport conduit (28) by a sealable outlet (18, 20), is alternately filled with and emptied of material from the storage container (6), when the outlet (18, 20) is closed and the inlet is open (14, 16), by a vacuum action in the chamber, achieved by means of a delimiting partition in the form of a gas-permeable filter element (50), in order to suck material out of the storage container (6) into said chamber (10, 12). When the inlet is closed (14, 16) and the outlet is open (18, 20), the chamber (10, 12) is supplied with a pressurised gas, in order to expel the material that has been sucked into the chamber (10, 12) into the transport conduit (28). To increase the service life of the filter element (50) and to prevent the contamination of the latter in a simple manner, said filter element (50) is configured as a hollow cylinder and surrounds at least part of the chamber (10, 12). |
