Door and valve assembly for a charging installation of a shaft furnace

Hatch and valve arrangement for a charging installation for a shaft furnace, comprising:

• a housing a housing axis and defining a central passage that extends along the housing axis,
• a central passage material hatch located in the central passage, the central passage material hatch configured to selectively open/close the central passage, the central passage material hatch caused to pivot by a transmission shaft of a hatch actuator located outside the housing, the transmission shaft directly connected to the central passage material hatch by a single arm and guided in a bearing that is fixed with respect to the housing, the bearing and the actuator mounted on a selectively attachable/detachable material hatch door that when attached seals a hatch opening made in a wall of the housing, the dimensions of the hatch opening determined such that when the door is detached the material hatch can be withdrawn transversely to an axis of the housing through the hatch opening, the material hatch, arm, transmission shaft, hatch actuator, bearing, and door together constitute a material hatch module that is detachable and extractable in one piece from the housing;
• and
• a central passage sealing valve located in the central passage and spaced circumferentially on the housing from the central passage material hatch, the central passage sealing valve configured to selectively open/close the central passage, the central passage sealing valve caused to pivot by a transmission shaft of a valve actuator located outside the housing, the transmission shaft directly connected to the central passage sealing valve by a single arm and guided in a bearing that is fixed with respect to the housing, the bearing and the actuator mounted on a selectively attachable/detachable sealing valve door that when attached seals a sealing valve opening made in the wall of the housing, the dimensions of the sealing valve opening determined such that when the door is detached the sealing valve can be withdrawn transversely to an axis of the housing through the sealing valve opening, the sealing valve, arm, transmission shaft, valve actuator, bearing, and sealing valve door together constitute a sealing valve module that is detachable and extractable in one piece from the housing, the material hatch module offset by an angle from the sealing valve module about the housing axis.