Hose line for transporting abrasive media and method and device for production thereof

Abstract

The present invention relates to a hose line ( 1 ) for transporting abrasive media with an electrically conductive reinforcing element ( 5 ) running in or on the hose wall ( 2 ) and extending in the hose direction ( 6 ), wherein an insert ( 7 ) made of electrically conducting material is at least partially embedded in the hose wall ( 2 ) and extends in the hose direction ( 6 ) at a distance from the reinforcing element ( 5 ).

1 . A hose line for transporting abrasive media along a hose direction, said hose line comprising:
 a hose wall;   an electrically conductive reinforcing element running in or on the hose wall and extending in the hose direction, direction; and   an insert made of electrically conducting material is at least partially embedded in the hose wall and extends in the hose direction at a distance from the reinforcing element.   
     
     
         2 . The hose line according to  claim 1  wherein the electrically conducting material and/or the reinforcing element are separated from the hose interior by a wearing layer. 
     
     
         3 . The hose line according to  claim 1 , wherein the hose line has a helically running material web which forms the hose wall, and has a helically running reinforcing element, which is secured on or in the hose wall. 
     
     
         4 . The hose line according to  claim 1 , wherein the electrically conducting material comprises a metal wire, and/or an electrically conductive plastic. 
     
     
         5 . The hose line according to  claim 1 , wherein the electrically conducting material lies closer to the hose axis in the radial direction than the reinforcing element. 
     
     
         6 . The hose line according to  claim 1 , wherein the reinforcing element and the electrically conducting material are separated from each other by an isolating layer. 
     
     
         7 . A method for producing a material web for a hose line made of thermoplastic for abrasive media, said method comprising the steps of;
 feeding wherein a plastic melt into an extrusion head to form an extruded material web;   connecting an electrically conductive reinforcing element to the material web during the extrusion of the material web;   feeding an electrically conducting material into the extrusion head to form an insert in the material web; and   introducing the electrically conducting material into the material web at a defined distance from the reinforcing element during the extrusion of the material web.   
     
     
         8 . The method according to  claim 7 , wherein the insert consists of electrically conductive thermoplastic, wherein the material web and the insert are brought together by coextrusion. 
     
     
         9 . The method according to  claim 7 , wherein the electrical conductor consists of metal wire. 
     
     
         10 . A method for producing a hose line for abrasive media, wherein an extruded material web made of thermoplastic is wound helically to form the hose line and neighboring longitudinal edge sections of the material web are connected to each other in an overlapping manner, said method comprising the steps of:
 connecting an electrically conductive reinforcing element to the thermoplastic in such a way that the reinforcing element extends helically in the hose direction;   attaching an electrically conducting material to the hose line in such a way that it extends in the hose direction at a distance from the reinforcing element; and   attaching at least one of the reinforcing element and the electrically conducting material to the extruded material web.   
     
     
         11 . The method according to  claim 10 , wherein one of the reinforcing element and the electrically conducting material is connected to the material web during the extrusion thereof and the other of the reinforcing element and the electrically conducting material is attached to the extruded material web. 
     
     
         12 . The method according to  claim 10 , wherein the hose line is formed of several plastic layers at least in sections, further comprising the step of introducing at least part of the reinforcing element and/or the electrically conducting material between two plastic layers. 
     
     
         13 . A device for producing hose lines made of thermoplastic with a reinforcing element at least partially embedded in a hose wall, said device comprising:
 an extrusion head for extruding a material web, wherein the extrusion head has at least one feed channel for flowable plastic from at least one extruder, wherein the reinforcing element is guided into the extrusion head in order to at least partially embed the reinforcing element in the thermoplastic during the extrusion of the material web;   a first guide section, section, which is set up to guide the reinforcing element in the extrusion head, with the result that the reinforcing element is integrated into the thermoplastic in a defined position; and   a second guide section for an electrical conductor, which is fed into the extrusion head in order to be at least partially embedded in the thermoplastic, wherein the second guide section is formed in such a way that the electrical conductor is embedded in the thermoplastic at a defined distance from the reinforcing element along the material web.   
     
     
         14 . The device according to  claim 13 , wherein the first and second guide sections comprise ducts, for the reinforcing element and the electrical conductor. 
     
     
         15 . The device according to  claim 13 , wherein the material web is extruded as a profiled rim. 
     
     
         16 . The hose line according to  claim 2 , wherein the hose line has a helically running material web, which forms the hose wall, and has a helically running reinforcing element, which is secured on or in the hose wall. 
     
     
         17 . The hose line according to  claim 16 , wherein the electrically conducting material comprises a metal and/or an electrically conductive plastic. 
     
     
         18 . The hose line according to  claim 17 , wherein the electrically conducting material lies closer to the hose axis in the radial direction than the reinforcing element. 
     
     
         19 . The hose line according to  claim 16 , wherein the electrically conducting material lies closer to the hose axis in the radial direction than the reinforcing element. 
     
     
         20 . The hose line according to  claim 16 , wherein the reinforcing element and the electrically conducting material are separated from each other by an isolating layer.