Patent EP-1887302-A1 (EP)
Inventor: DIKTY MARIO
IPC: F27D15/02
Filed: 2006-08-10
Abstract: The device for cooling bulk material with a gas, comprises rust flowed by cooling gas, and a layer of the bulk materials conveyed by a task end (4) in a conveying direction (50) to a delivery end (6). The rust comprises forwardly- and backwardly moved planks changing in the conveying direction and a sealing device is intended between adjoining planks. The adjoining planks have an external and internal sealing device spatially separated from each other. The sealing device has a chamber-free conveying channel running along the planks between the sealing devices. The device for cooling bulk material with a gas, comprises rust flowed by cooling gas, and a layer of the bulk materials conveyed by a task end (4) in a conveying direction (50) to a delivery end (6). The rust comprises forwardly- and backwardly moved planks changing in the conveying direction and a sealing device is intended between adjoining planks. The adjoining planks have an external and internal sealing device spatially separated from each other. The sealing device has a chamber-free conveying channel running along the planks between the sealing devices. A gas supply is formed for effecting a gas flow at the longitudinal of the conveying channel in order to convey bulk materials through one of the sealing devices incorporated to a delivery place. The delivery place is the external sealing device and is arranged at the delivery end. The rust is subdivided in the conveying direction into a sub chamber with several chambers, which are subjected with different gas pressure. A propellant source for the conveying channel is formed by a connection with one of the chambers. The propellant source has an increased pressure. The external or internal sealing device is formed by gap sealing or labyrinth sealing. One of the sealing devices is self-regulatingly carried out. The external sealing device is arranged deeply than the internal sealing device. The sealing device comprises a protrusive strip at a longitudinal edge to one of the planks and a thigh profile overlapped at the adjoining planks. The thigh profile with a free end of one of its thighs together with the strip forms a gap sealing, which functions as an external sealing device. The strip has a stage, whose flanks forms the labyrinth sealing with the free end of the thighs. The thigh profile has an additional thigh for forming a U-shaped profile, which is fastened at a superior cheek arranged at the adjoining planks. An additional strip is arranged at the adjoining planks. The additional strip forms the gap sealing with the strip, which functions as internal sealing device. The additional strip is formed as a L-shaped profile. The additional strip is arranged at a superior element of the adjoining planks, so that the internal sealing device is arranged higher than the external sealing device. The superior element is formed by the cheek. The internal sealing device is formed between an inner surface of the thigh profile and an additional plate arranged at the strip. A gas canal forms end plates projecting downwards at the longitudinal sides of the adjoining planks opposite to each other. The gas canal flows into the conveying channel over the internal sealing device. The conveying channel has a cross-section that is about 15-50 times so large as the width of the sealing device. The internal sealing device has a flow resistance, which is smaller than that of the external sealing device. The flow resistance is smaller around a factor of 2-50.