Cooling arrangement for machines in underground mining

摘要

In a cooling arrangement, the machines lie in a coolant line which has inlets and outlets for direct connection to a fresh-water line and in which at least one coolant pump is provided for the return of the cooling water into the fresh-water line. According to the invention, a branch line (36) leading to a water discharge (3) is provided, a control valve (29) being arranged at the connection or in the branch line (36). The control valve (29) is connected to a temperature control (34) which has a temperature-measuring device (35) for sensing the cooling-water temperature and is designed in such a way that the control valve (29) is opened in the direction of the branch line (36) if a certain cooling-water temperature is exceeded. <IMAGE>