Slide valve, particularly a hot-blast slide valve or a hot-gas valve

Claim 1

A SLIDE-VALVE, PARTICULARLY A HOT-BLAST SLIDE-VALVE OR A HOT-GAS VALVE COMPRISING A CASING HAVING AN INNER AND AN OUTER WALL AND A GAS PASSAGE APERTURE THERETHROUGH, A VALVE TONGUE SLIDABLE IN SAID CASING TO OPEN OR CLOSE SAID APERTURE, A COOLING CHAMBER HAVING AN INLET AND AN OUTLET THROUGH WHICH A COOLING MEDIUM MAY FLOW LOCATED IN SAID CASING AT EACH SIDE OF SAID TONGUE, SAID INLETS BEING LOCATED AT THE OUTER WALL OF SAID CASING APPROXIMATELY LEVEL WITH THE MIDDLE AXIS OF SAID PASSAGE APERTURE ON BOTH SIDES OF SAID APERTURE, GUIDING MEMBERS FOR CONDUCTING THE COOLING MEDIUM IN THE COOLING CHAMBER FROM SAID INLETS AWAY IN VERTICAL DIRECTION ALONG THE OUTER WALL OF SAID CASING AND REVERSING THE COOLING MEDIUM IN THE AREA OF THE LOWEST POINT OF SAID COOLING CHAMBER BETWEEN THE ENDS OF SAID GUIDING MEMBERS, SAID ENDS BEING SPACED AT A DISTANCE FROM EACH OTHER SO THAT SAID MEDIUM SPACED AT SEQUENTLY CONDUCTED BETWEEN SAID GUIDING MEMBERS AND THE INNER WALL OF SAID CASING AND FLOWS UPWARDLY TO AND OUT OF SAID OUTLETS LOCATED AT THE HIGHEST POINT OF SAID COOLING CHAMBERS, AND CONNECTIONS LOCATED IN THE AREA OF REVERSING SAID COOLING MEDIUM FOR COMPRESSED AIR OR WATER UNDER PRESSURE FOR MOMENTARY SCAVENGING OF SAID COOLING CHAMBERS.