Cooling and dust exhaustion plant for foundry sand

Abstract

Cooling and dust exhaustion plant for foundry sand, comprising: a substantially closed structure defining a cooling channel extending according to a longitudinal axis and with an inlet section for the sand to be treated and an outlet section for the treated sand, a heat exchanger positioned inside the aforesaid structure and extending along the longitudinal axis of the cooling channel, a cooling circuit to allow a flow of cooling fluid to circulate in the heat exchanger, a fan positioned to send an air flow to an air chamber positioned under said heat exchanger, a dust suction chamber positioned above said heat exchanger, and a suction duct communicating with said suction chamber and associated with a filter unit, in which the heat exchanger comprises a plurality of tubes which extend in a transverse direction in relation to said longitudinal axis.

1 . Cooling and dust exhaustion plant for foundry sand, comprising: 
 a substantially closed structure defining a cooling channel extending according to a longitudinal axis and which has an inlet section for the sand to be treated and an outlet section for the treated sand,    a heat exchanger positioned inside the aforesaid structure and extending along the longitudinal axis of the cooling channel,    a cooling circuit to allow a flow of cooling fluid to circulate in the heat exchanger,    a fan positioned to send an air flow to an air chamber positioned under said heat exchanger,    a dust suction chamber positioned above said heat exchanger, and    a suction duct communicating with said suction chamber and associated with a filter unit,    in which the heat exchanger comprises a plurality of tubes which extend in a transverse direction in relation to said longitudinal axis.    
     
     
         2 . Plant according to  claim 1 , in which the heat exchanger comprises a plurality of modules, each of which is movable in relation to the base structure in the aforesaid transverse direction between an inserted position and an extracted position.  
     
     
         3 . Plant according to  claim 2 , in which each module comprises an inlet manifold and an outlet manifold of the flow of cooling fluid which, in the aforesaid inserted position of the module, extend from opposite parts of said base structure.  
     
     
         4 . Plant according to  claim 2 , in which each of said modules is fixed to the base structure so as to be disassembled separately from the other modules.  
     
     
         5 . Plant according to  claim 4 , in which each module is provided with front plates for fixing to the side walls of the base structure.  
     
     
         6 . Plant according to  claim 2 , in which at least part of said modules are connected in series with one another with reference to the direction of circulation of the flow of cooling fluid.  
     
     
         7 . Plant according to  claim 2 , in which at least part of said modules are connected in parallel with one another with reference to the direction of circulation of the flow of cooling fluid.