Shot blast machine

Abstract

The shot blast machine having a projector with an impeller includes the impeller which is made of a high abrasion-resistant rubber. Therefore, it can increase the durability without damage of the impeller and projectile; it can use the projectile with high grindability, with small particle and light gravity; and it can be used at any condition including extreme cold, normal temperature, wet condition and the like.

1 - 4 . (canceled)  
   
   
       5 . A blasting machine comprising: 
 a case body;    a support surface within the case that supports a workpiece;    an impeller assembly comprising an impeller wheel cover, a nozzle, and an impeller directing slurry towards the support surface;    at least one showerhead, separate from said impeller assembly, showering said table with recirculated liquid;    a vibrating screen receiving debris and liquid runoff from the workpiece and separating projectile from the debris, the vibrating screen passing therethrough the liquid runoff;    a projectile receiving tank for receiving and storing the separated projectile;    a liquid receiving tank for receiving and storing the liquid runoff;    a pump for pumping and recirculating said liquid from said liquid receiving tank to said showerhead;    means connecting said liquid receiving tank to said pump and said pump to said showerhead; and    a suction hose for removing said projectile from said projectile receiving tank and transporting said projectile to the nozzle wherein said connecting means is separate from said suction hose.    
   
   
       6 . The blasting machine of  claim 5  comprising a plurality of separate and spaced impeller assemblies directing the slurry towards the support surface, each of said impeller assemblies comprising said impeller wheel cover and said nozzle.  
   
   
       7 . The blasting machine of  claim 5  wherein said support surface is a stationary support table.  
   
   
       8 . The blasting machine of  claim 5  wherein the support surface comprises: 
 a guide roller adapted for receiving the workpiece therein;    a plurality of rolling conveyors disposed about said guide roller and connected to said guide roller so that rolling of said conveyors rolls said guide roller; and    means for rolling said rolling conveyors.    
   
   
       9 . The blasting machine of  claim 5  wherein the recirculated liquid consists of an aqueous solution.  
   
   
       10 . The blasting machine of  claim 5  wherein the impeller and wheel cover are lined with or formed from abrasion-resistant rubber.  
   
   
       11 . The blasting machine of  claim 8  wherein said means for rolling said rolling conveyors comprises a motor.  
   
   
       12 . The blasting machine of  claim 5  wherein said connecting means comprises a first tube connecting said liquid receiving tank to said pump and a second tube connecting said pump to said showerhead.