Dosing device, in particular for powder

Abstract

This dosing device ( 1 ) comprises a container ( 2 ) and a plug ( 4 ) comprising, in addition to a part ( 15 ) for connection to the container, two mobile outer parts ( 16 and 17 ). One of the mobile parts ( 16 ) is held in place during dosing, while the container ( 2 ) rotates continually to assist the flow of the content of same; the other outer part ( 17 ) can be rotated as necessary to adjust the opening of the plug. The movements can be carried out by a machine on which the dosing device is positioned upside down, with the plug facing downwards.

What is claimed is: 
     
         1 - 13 . (canceled) 
     
     
         14 . Dosing device ( 1 ) comprising a container ( 2 ) having an opening ( 3 ), a plug ( 4 ) arranged at the opening of the container and having a first orifice, and a mobile mechanism on the first orifice of the plug to open or close as necessary the plug and thus the dosing device; characterized in that the plug comprises: a first outer part ( 16 ), arranged around a connection ( 15 ) to the container ( 2 ), the connection being placed at the opening ( 3 ) of the container ( 2 ), so as to be able to rotate around said connection, and further comprising a sealing part ( 38 ) also arranged in front of the opening and provided with the first orifice ( 39 ); and a second outer part ( 17 ), arranged in front of the sealing part ( 39 ) and comprising a second orifice ( 41 ), while being able to rotate with respect to the first outer part so as to give as necessary a superposition of variable surface area, or an absence of superposition, of the second orifice ( 41 ) over the first orifice ( 39 ). 
     
     
         15 . Dosing device according to  claim 14 , characterized in that the plug further comprises a connection part ( 15 ), assembled to the container ( 2 ) around the opening ( 3 ), having a passage ( 18 ) traversing it and leading into the container, and also having said connection. 
     
     
         16 . Dosing device according to  claim 15 , characterized in that the connection part is assembled to the container by an adjustment of concentric smooth parts ( 19 ), by a screw down nut ( 20 ) and a locknut ( 22 ), the screw down nut ( 20 ) being borne by one of the container ( 2 ) and of the connection part ( 15 ) so as to be able to rotate freely, and the screw down nut and the locknut being screwed down onto a thread ( 14 ) established on the other of the container and of the connection part. 
     
     
         17 . Dosing device according to  claim 14 , characterized in that the first outer part ( 16 ) comprises a stirring rod ( 42 ) extending into the container through the opening ( 3 ). 
     
     
         18 . Dosing device according to  claim 14 , characterized in that the connection comprises a circular collar ( 27 ), and the first outer part ( 16 ) comprises an assemblage of two parts ( 28 ,  29 ) clasping together the collar. 
     
     
         19 . Dosing device according to  claim 14 , characterized in that the first outer part ( 16 ) comprises a second circular collar ( 35 ), and the second outer part ( 17 ) comprises an assemblage of two parts ( 33 ,  34 ) clasping together the second collar. 
     
     
         20 . Dosing device according to  claim 17 , characterized in that the stirring rod has a semi-circular section, divided into two branches ( 44 ) at one end extending into the container ( 2 ), and is provided with projecting lugs ( 45 ). 
     
     
         21 . Dosing device according to  claim 16 , characterized in that the second outer part ( 17 ) comprises two assembled portions ( 33 ,  34 ) extending on either side of a second collar ( 35 ) established on an exterior side of the first outer part ( 16 ), joined by a thread ( 36 ) and held in place by a locknut ( 37 ) established on the thread ( 36 ). 
     
     
         22 . Dosing assembly comprising a dosing device according to  claim 14  as well as a machine ( 5 ) comprising a raising frame ( 47 ) itself comprising a support ( 46 ) traversed by a vertical boring ( 51 ), the dosing device ( 1 ) comprising reliefs ( 20 ) resting on the support ( 46 ) around the boring ( 51 ), the boring ( 51 ) then containing the plug, and the machine ( 5 ) further comprises a system for immobilizing ( 7 ) the plug ( 4 ) and a system for rotating ( 8 ) the container ( 2 ). 
     
     
         23 . Dosing assembly according to  claim 22 , characterized in that the plug ( 4 ) and the boring ( 51 ) have mutually imbricated first reliefs ( 55 ,  56 ) which maintain the plug ( 4 ) immobilized against rotations. 
     
     
         24 . Dosing assembly according to  claim 23 , characterized in that the first reliefs of the plug are placed on the first outer part, and in that the second outer part ( 17 ) and a ring ( 53 ) delimiting the boring ( 52 ) and rotating in the support ( 46 ) have mutually imbricated second reliefs ( 57 ,  58 ) which maintain them integral in rotation while enabling the second outer part to rotate with respect to the first outer part. 
     
     
         25 . Dosing assembly according to  claim 22 , characterized in that the dosing device ( 1 ) is provided with third reliefs resting on the support ( 46 ) around the boring ( 51 ), the plug ( 4 ) being flush under the support ( 46 ). 
     
     
         26 . Dosing assembly according to  claim 22 , characterized in that the system for rotating ( 8 ) the container ( 2 ) is a variable speed system.