Device for feeding a container for an installation for the heat treatment of waste

Abstract

A sleeve made of rigid tube into which the feed lines for feeding the waste to treated and the gases to be discharged lead. In order to avoid contamination or blockage of the sleeve, a tool for scraping the inner face of the wall thereof is added, in this case a terminal tubular section of one of the feed lines, which carries out orbital movements tangent to this inner face. Various cooling, rinsing and overpressure structures are added, as is a docking device extending at the bottom of the sleeve for connecting the latter to the heat treatment container.

What is claimed is: 
     
         1 . Device for feeding a container for an installation for the heat treatment and conditioning of waste, comprising a sleeve having a lower opening to be docked with an upper opening of the container, a first line for feeding the waste to be treated connecting to the sleeve and penetrating therein, the sleeve containing a tool for scraping its inner face, wherein the scraping tool is a sheath of axis parallel to the sleeve and forming a terminal section of the first feed line, and the device comprises a support of the sheath, the support being provided with a motorised off-centring mechanism to which the sheath is suspended, the off-centring mechanism moving the sheath in orbits where it is adjacent to the inner face of the sleeve. 
     
     
         2 . Device for feeding a container according to  claim 1 , wherein the sheath extends beyond the sleeve in a direction opposite the lower opening, through a sealing plate at the upper end of the sleeve, the sealing plate comprising a movable plate linked to the sheath, and a fixed plate linked to the sleeve and on which the movable plate moves, the fixed plate being provided with an opening for passage of the sheath that is larger than the latter, and a sealing device between the fixed plate at the movable plate. 
     
     
         3 . Device for feeding a container according to  claim 1 , wherein the off-centring mechanism comprises a toothed gear wheel to which the sheath is suspended, without being coaxial to an axis of rotation of said toothed wheel. 
     
     
         4 . Device for feeding a container according to  claim 1 , wherein the off-centring mechanism is arranged to also make the sheath rotate about itself. 
     
     
         5 . Device for feeding a container according to  claim 3 , wherein the off-centring mechanism comprises a gear between a toothed wheel attached to the sheath and a toothed ring attached to the off-centring mechanism, and the sheath is rotatably mounted in the toothed gear wheel to which it is suspended. 
     
     
         6 . Device for feeding a container according to  claim 4 , wherein the sheath has a helical excrescence, particularly a helical blade, on its outer face. 
     
     
         7 . Device for feeding a container according to  claim 1 , wherein the first feed line contains at least one rotating swirler, particularly of the “pigtail” type, to advance the waste to be treated. 
     
     
         8 . Device for feeding a container according to  claim 2 , wherein the swirler extends beyond the sheath in the direction opposite the lower opening of the sleeve, is suspended to a second motorised off-centring mechanism to which the sheath is suspended, and is rotated by a motor mounted on the second off-centring mechanism. 
     
     
         9 . Device for feeding a container according to  claim 8 , wherein the off-centring mechanism to which the sheath is suspended and the second off-centring mechanism are mechanically connected to one another and driven by the same motor. 
     
     
         10 . Device for feeding a container according to  claim 2 , wherein the first feed line comprises an upstream section, forming an angle with the terminal section and connected to the terminal section by an overflow unit, the terminal section being provided with a funnel at its top, which is connected to a pierced lower face of the overflow unit, the sheath being movable under the overflow unit. 
     
     
         11 . Device for feeding a container according to  claim 10 , wherein the sheath is sliding in an axial direction of the sleeve, and the upstream section is tilting by being hinged, at its two ends, to a fixed point of the device and to a wall of the overflow unit. 
     
     
         12 . Device for feeding a container according to  claim 10 , wherein the upstream section is equipped with a motorised rotating swirler, and connected, at an end opposite the overflow unit, to a hopper for pouring the waste to be treated. 
     
     
         13 . Device for feeding a container according to  claim 1 , wherein it comprises a second feed line made of material of a matrix for conditioning the waste, opening into the sleeve. 
     
     
         14 . Device for feeding a container according to  claim 13 , wherein the sleeve consists of two portions in extension, that can be dismantled from one another and equipped with different coolant circuits, a lower portion of which comprising the lower opening, and an upper portion into which the second feed line and a line for discharging gaseous products from heat treatment open. 
     
     
         15 . Device for feeding a container according to  claim 1 , wherein the second feed line is equipped with a scraper of its inner face. 
     
     
         16 . Device for feeding a container according to  claim 15 , wherein the scraper is a ram sliding in a section of the second feed line adjacent to the sleeve, and housed in an extension of said section of the second feed line, beyond an upstream section of the second feed line forming an angle with said section adjacent to the sleeve. 
     
     
         17 . Device for feeding a container according to  claim 16 , wherein a hole and a rinsing liquid pipe pass through the ram. 
     
     
         18 . Device for feeding a container according to  claim 1 , wherein the sleeve comprises a main rigid tubular portion and a docking device, the docking device comprising a docking sleeve surrounding the main portion by extending downwards, comprising the lower opening of the sleeve, mounted on the main portion and movable along the main portion. 
     
     
         19 . Device for feeding a container according to  claim 18 , wherein the docking sleeve comprises a compressible portion in the direction of the mobility of the docking sleeve. 
     
     
         20 . Device for feeding a container according to  claim 18 , further comprising a means for rinsing an annular volume between the docking sleeve and the main portion of the sleeve. 
     
     
         21 . Device for feeding a container according to  claim 19 , further comprising a means for rinsing an annular volume between the docking sleeve and the main portion of the sleeve, wherein the compressible portion is a bellows, and the rinsing means comprises inlet pipes in the annular volume that overhang the bellows, guided radially towards the main portion of the sleeve and producing bounces of rinsing liquid radially outwardly and towards the bellows. 
     
     
         22 . Device for feeding a container according to  claim 18 , wherein it comprises a pipe for injecting overpressure gas into an annular volume between the docking sleeve and the main portion of the sleeve. 
     
     
         23 . Device for feeding a container according to  claim 18 , wherein the docking sleeve comprises a docking sheath sliding on the main portion of the sleeve, and actuators for moving the docking sheath connecting the docking sheath to the main portion of the sleeve. 
     
     
         24 . Device for feeding a container according to  claim 23 , wherein it comprises a pipe for injecting overpressure gas into an annular volume between the docking sheath and the main portion of the sleeve. 
     
     
         25 . Device for feeding a container according to  claim 1 , further comprising a pressure intake pipe comprising rinsing means, extending in a wall of the sleeve along the sleeve, and opening at a lower edge of the sleeve. 
     
     
         26 . Device for feeding a container according to  claim 1 , further comprising a means for measuring the filling level of the container, disposed through the sleeve with overpressure gas injection into the pipe.