Cleaning assembly for a surface of a roller

Abstract

A cleaning assembly for a surface of a roller has a dry-ice container, a connector and an injector. The dry-ice container contains CO 2 . The connector has two ends and one end connects the dry-ice container. The injector is mounted on the other end of the connector, is coupled with the connector and the dry-ice container and allows CO 2 to be sprayed out of the injector toward the surface of the roller. Because CO 2 is solid when it is sprayed out of the injector toward the surface of the roller, the solid CO 2 provides enough kinetic energy to residues in cells of the roller. Therefore, the residues can be removed from the cells. Additionally, after the solid CO 2 impacts the surface of the roller, the solid CO 2 sublimates directly to a gas CO 2 , so there is no stain or other spot to be remained on the surface of the roller.

1 . A cleaning assembly for a surface of a roller comprising:
 a dry-ice container containing carbon dioxide;   a connector having two ends and one of the ends connecting the dry-ice container;   an injector being mounted on the other end of the connector, being coupled with the connector and the dry-ice container and allowing carbon dioxide to be sprayed out of the injector toward the surface of the roller, wherein the injector is a tapered nozzle with a spray angle equal to 30°; and   a fixing apparatus being coupled with the connector near the injector to fix the injector to allow the injector to spray steadily toward the surface of the roller.   
     
     
         2 . The cleaning assembly as claimed in  claim 1  further comprising a pressure controller that connects with the dry-ice container. 
     
     
         3 . The cleaning assembly as claimed in  claim 2 , wherein the pressure controller controls an output pressure of carbon dioxide to be between 15˜30 kg/cm 2 . 
     
     
         4 - 9 . (canceled) 
     
     
         10 . The cleaning assembly as claimed in  claim 1 , wherein the dry-ice container is a steel drum containing high-pressure liquid gas of carbon dioxide. 
     
     
         11 . The cleaning assembly as claimed in  claim 10 , wherein the dry-ice container is a steel drum containing high-pressure liquid gas of carbon dioxide.