A device for producing fibers or microfibers

Abstract

A device for producing nanofibers or microfibers from solutions, emulsions, liquid suspensions or melts containing a spun substance, comprises a chamber in which a hollow shaft is assembled, on which at least one rotating disc with an output gap is mounted, The chamber is generally provided with a source of the flowing gas and a collection area. In an alternative embodiment, the chamber is provided with a number of side by side arranged hollow shafts. It is preferred that at least one hollow shaft is provided with two superposed rotating discs. At least one rotating disc is composed of two successive parts, wherein between the upper part and the lower part an outlet gap is formed around the circumference thereof. The size of the outlet gap between the upper part and the lower part of rotating disc may be formed by a spacer element, in particular a spacer ring.

1 . A device for producing nanofibers or microfibers from solutions, emulsions, liquid suspensions or melts containing a spun substance, wherein it comprises a chamber in which a hollow shaft is assembled on which at least one rotating disk with an output gap is mounted. 
     
     
         2 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the chamber is provided with a source of the gas flow and a collection area. 
     
     
         3 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the chamber is provided with a number of side by side arranged hollow shafts on which rotating discs are mounted. 
     
     
         4 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein that at least one hollow shaft is provided with at least two superimposed rotating discs. 
     
     
         5 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein least one rotating disc is composed of two successive parts, wherein between the upper part and the lower part an outlet gap is formed around the circumference thereof. 
     
     
         6 . The device for producing nanofibers or microfibers as defined in  claim 5 , wherein the size of the outlet gap between the upper part and the lower part of the rotating disc is formed by a spacer element, for example a spacer ring. 
     
     
         7 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein at least one part of the rotating disc has a frustoconical shape. 
     
     
         8 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein at least one rotating disc is provided with a pressure element. 
     
     
         9 . The device for producing nanofibers or microfibers as defined in  claim 6 , wherein the pressure element is a pressure nut. 
     
     
         10 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the inner space of the hollow shaft is interconnected via openings with the inner space of each of the rotating discs between their upper part and the lower part and the output gap. 
     
     
         11 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the hollow shaft is interconnected with a rotary unit allowing the supply of a liquid or a melt comprising the spun substance, and further with a drive motor. 
     
     
         12 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the source of the gas flow in the chamber is a compressor or a fan. 
     
     
         13 . The device for producing nanofibers or microfibers as defined in  claim 2 , wherein the collection area is a movable conveyor made of a nonwoven fabric or a rotating collector or a bag of a porous mesh. 
     
     
         14 . The device for producing nanofibers or microfibers as defined in  claim 2 , wherein the collection area is electrically charged. 
     
     
         15 . The device for producing nanofibers or microfibers as defined in  claim 1 , wherein the rotating disc or discs located in the chamber, made of a heat resistant material, are fitted with means for their heating.