Thick Stock Valve

Abstract

A thick stock valve having a first through-opening, having a second through-opening and having a valve member associated with both through-openings. The valve member is mounted so as to be able to pivot about a pivot axis, wherein the valve member has a sealing face that is curved concentrically with the pivot axis. In a first state, the valve member releases the first through-opening and closes the second through-opening. In a second state, the valve member releases the second through-opening and closes the first through-opening. The valve member comprises a sealing part and a pivot part, wherein the pivot part is mounted so as to be able to rotate in the pivot axis and wherein the sealing part is connected to the pivot part via a connection structure.

1 . A thick stock valve with a first through opening ( 27 ), a second through opening ( 28 ) and a valve member ( 32 ) associated with both through openings ( 27 ,  28 ), wherein the valve member ( 32 ) is mounted to pivot with respect to a pivot axis ( 36 ), the valve member ( 32 ) has a sealing face ( 38 ) that is curved concentrically with the pivot axis ( 36 ), the valve member ( 32 ) in a first state ( 30 ) opens the first through opening ( 27 ) and closes the second through opening ( 28 ), the valve member ( 32 ) in a second state ( 29 ) opens the second through opening ( 28 ) and closes the first through opening ( 27 ), and the valve member ( 32 ) comprises a sealing part ( 35 ) and a pivot part ( 34 ), the pivot part ( 34 ) mounted to rotate in the pivot axis ( 36 ) and the sealing part ( 35 ) is connected to the pivot part ( 34 ) via a connection structure ( 37 ). 
     
     
         2 . The thick stock valve of  claim 1 , comprising a housing ( 46 ) defining an inner space and the valve member ( 32 ) is arranged in said inner space. 
     
     
         3 . The thick stock valve of  claim 1 , wherein an intermediate face of said housing ( 46 ) is arranged between the first through opening ( 27 ) and the second through opening ( 28 ), said intermediate face having a curvature which is concentric with the pivot axis ( 36 ). 
     
     
         4 . The thick stock valve of  claim 1 , wherein in a third switching state the valve member ( 32 ) is situated between the first through opening ( 27 ) and the second through opening ( 28 ). 
     
     
         5 . The thick stock valve of  claim 1 , wherein the connection structure ( 37 ) is rigid to torques acting relative to the pivot axis ( 36 ). 
     
     
         6 . The thick stock valve of  claim 1 , wherein the connection structure ( 37 ) allows a movement of the sealing part ( 35 ) relative to the pivot part ( 34 ) in a radial direction. 
     
     
         7 . The thick stock valve of  claim 1 , wherein the connection structure comprises an elastic element ( 37 ) situated between the sealing part ( 35 ) and the pivot part ( 34 ). 
     
     
         8 . The valve of  claim 1 , wherein an elastic element is situated between a shaft ( 33 ) of the valve member ( 32 ) and a housing ( 46 ) of the valve. 
     
     
         9 . The thick stock valve of  claim 1 , wherein the valve member ( 32 ) comprises two stub shafts ( 33 ) mounted in the pivot axis ( 36 ) and in that the stub shafts ( 33 ) enclose a free space between them. 
     
     
         10 . The thick stock valve of  claim 1 , wherein the valve member ( 32 ) comprises one leg ( 51 ,  52 ,  53 ) which extends between the pivot axis ( 36 ) and the sealing face ( 38 ), and in that the leg ( 51 ,  52 ,  53 ) is spaced apart from an end face of a housing ( 46 ) of the thick stock valve ( 26 ). 
     
     
         11 . The thick stock valve of  claim 1 , wherein the valve member ( 32 ) has a scraper ( 55 ), which is moved along an end face of the housing ( 46 ) of the thick stock valve ( 26 ) during a switching process of the valve member ( 32 ). 
     
     
         12 . The thick stock valve of  claim 1 , wherein the valve member ( 32 ) comprises an outer face ( 43 ,  44   47 ,  49 ) by which a pressure difference present across the valve member ( 32 ) is transformed into a force acting in a radial direction. 
     
     
         13 . A thick stock pump having a thick stock valve of  claim 1 , wherein the thick stock pump is designed such that the material placed in motion by a conveying member of the pump enters through the first and/or second inlet opening ( 27 ,  28 ) into the inner space of the thick stock valve. 
     
     
         14 . The thick stock pump of  claim 13 , wherein the thick stock pump is designed to pivot said valve member ( 32 ) between said first and second states when no pressure difference is present across the valve member ( 32 ).