Device for returning remainders from the platform to the interior of a coke oven

In an apparatus for removing coke remainders from the platform of a coke oven, a working member comprising a lower suction nozzle, an upper discharge nozzle situated at an elevation higher than said lower suction nozzle, both of said nozzle having front open ends adapted to be directed toward a coke oven, and both of said nozzles also having open rear ends, said working member further including a curved pipe connected with and providing communication between said rear ends of said suction and discharge nozzles to define therewith a flow path entering into said suction nozzle through said open end thereof, curving along the interior of said curved pipe, and extending from said curved pipe forwardly along the interior of said discharge nozzle and through said front open end of the latter, gas-supply means communicating with said working member at a location between said open ends of said suction and discharge nozzles for supplying gas under pressure to the interior of said working member to provide for a flow of gas along said flow path, and moving means operatively connected with said working member for moving the latter first forwardly from a retracted rest position along a platform toward a coke oven up to a forward end position situated at the coke oven and then rearwardly from said forward end position back to said retracted rest position, so that during movement from said retracted rest position to said forward end position while said gas-supply means supplies gas to said flow path, said coke remainders will be sucked into said suction nozzle and propelled out from said discharge nozzle back to the interior of a coke oven, said upper discharge nozzle having a substantially horizontal axis and extending through a substantial distance forwardly beyond said open end of said lower suction nozzle so that when said working member is at said forward end position thereof said suction nozzle can be situated directly at the door of a coke oven while said upper discharge nozzle can extend to a substantial distance into the interior of the coke oven, said suction nozzle also having a substantially horizontal axis and said suction nozzle having an upper wall extending forwardly beyond said open front end of said suction nozzle but terminating rearwardly of the front open end of said discharge nozzle, and at least one additional nozzle situated at said upper wall of said suction nozzle forwardly of said open end thereof but rearwardly of said front open end of said discharge nozzle and communicating with said gas-supply means for directing gas under pressure downwardly toward a surface in front of said front open end of said suction nozzle to contribute toward loosening of remainders such as pitch-bonded remainders, so that the latter thus-loosened remainders will be received in said suction nozzle.

In an apparatus for removing coke remainders from the platform of a coke oven, a working member comprising a lower suction nozzle, an upper discharge nozzle siturated at an elevation higher than said lower suction nozzle, both of said nozzles having front open ends adapted to be directed toward a coke oven, and both of said nozzles also having open rear ends, said working member further including a curved pipe connected with and providing communication between said rear ends of said suction and discharge nozzles to define therewith a flow path entering into said suction nozzle through said open end thereof, curving along the interior of said curved pipe, and extending from said curved pipe forwardly along the interior of said discharge nozzle and through said front open end of the latter, gas-supply means communicating with said working member at a location between said open ends of said suction and discharge nozzles for supplying gas under pressure to the interior of said working member to provide for a flow of gas along said flow path, and moving means operatively connected with said working member for moving the latter first forwardly from a retracted rest position along a platform toward a coke oven up to a forward end position situated at the coke oven and then rearwardly from said forward end position back to said retracted rest position, so that during movement from said retracted rest position to said forward end position while said gas-supply means supplies gas to said flow path coke remainders will be sucked into said suction nozzle and propelled out from said discharge nozzle back to the interior of a coke oven, said suction nozzle having a bellmouth configuration and including a lower edge long enough to extend substantially completely across a platform of a coke oven, so that the entire operating cycle can be completed during one forward stroke and one rearward stroke of said working member forwardly from and back toward said retracted rest position thereof, said suction nozzle including a lower wall terminating in a front edge and an elongated hollow channel receiving said front edge of said lower wall in its interior and defining therewith said lower edge of said suction nozzle, said gas-supply means communicating with said channel for supplying thereto gas for cooling said lower edge of said suction nozzle.

In an apparatus for removing coke remainders from the platform of a coke oven, a working member comprising a lower suction nozzle, an upper discharge nozzle situated at an elevation higher than said lower suction nozzle, both of said nozzles having front open ends adapted to be directed toward a coke oven, and both of said nozzles also having open rear ends, said working member further including a curved pipe connected with and providing communication between said rear ends of said suction and discharge nozzles to define therewith a flow path entering into said suction nozzle through said open end thereof, curving along the interior of said curved pipe, and extending from said curved pipe forwardly along the interior of said discharge nozzle and through said front open end of the latter, gas-supply means communicating with said working member at a location between said open ends of said suction and discharge nozzles for supplying gas under pressure to the interior of said working member to provide for a flow of gas along said flow path, and moving means operatively connected with said working member for moving the latter first forwardly from a retracted rest position along a platform toward a coke oven up to a forward end position situated at the coke oven and then rearwardly from said forward end position back to said retracted rest position, so that during movement from said retracted rest position to said forward end position while said gas-supply means supplies gas to said flow path coke remainders will be sucked into said suction nozzle and propelled out from said discharge nozzle back to the interior of a coke oven, said moving means including an elongated substantially horizontal bar extending rearwardly from said working member and having a front end region operatively connected with said working member, said moving means further including support means supporting said bar for forward and rearward movement and a drive operatively connected with said bar for extending the latter forwardly from a rear rest position for displacing said working member forwardly from said rear retracted position thereof, and for retracting said bar rearwardly back to said rear rest position thereof after said working member has reached said forward end position thereof, and spring-compensating means compressed between and pivotally connected to said bar at a lower portion thereof adjacent said working member and to said working member at an elevation lower than said bar for compensating for the cantilever load which otherwise would be increasingly provided at said bar as said working member approaches said forward end position thereof.