| 摘要 |
PURPOSE:To decrease misrun and leakage defects and to improve working environments by sucking gases generated from a shell core and filtering the foreign matter generated from these gases between a communicating hole and suction device. CONSTITUTION:The gases forcibly sucked from the inside of the shell core by the suction device 2 are supplied via a piping 3P into a heat discharging chimney 31 and are immediately cracked by combustion. A piping 3P between the communicating hole for sucking the gases and the suction device 2 is provided with a filter device 6 to remove the pasty tar generated from the sucked gases. The greater part of the pasty tar is filtered away by the first filter device 60 in this filter device 6. The remaining tar is filtered away by the plural filters of the second filter device 70. A pneumatic type negative pressure generator of a simple construction composed of a cylindrical member is merely necessitated to be newly installed as the suction device 2. |
