Crusher blades of a sinter discharge part of a sintering machine

Claim 2

In the sinter discharge part of a sintering machine comprising an axially elongated rotating shaft and crusher blades mounted on said shaft for rotation therewith for crushing sinters to a suitable grain size for feeding into a blast furnace, wherein the improvement comprises a case laterally enclosing said rotating shaft and secured thereon for rotation therewith, individual said blades attached to and extending outwardly from Said case and spaced apart in the axial direction of said shaft, a cooling medium supply pipe connected to said case, a cooling medium exhaust pipe connected to said case, said case having at least one flow passage therethrough for the cooling medium, each said blade having a flow passage therethrough communicating with said at least one flow passage in said case for circulating the cooling medium in turn through said blades and case for maintaining said blades within a desired temperature range.

Claim 3

In the sintered discharge part of a sintering machine, as set forth in claim 1, wherein said case comprises a hollow body with its inner surface spaced radially outwardly from said shaft and forming an axially extending flow passage therebetween, dividing plates positioned within said case and extending in the axial direction of said shaft through said flow passage in said case from one end of said case to a transverse plane short of the other end thereof so that the flow passage is divided by said dividing plates into two sections in communication at the other end of said flow passage in said case, said blades being hollow, a dividing plate for each said blade secured at its radially inner end to said shaft and extending outwardly therefrom transversely of said shaft through the flow passage in said case into said blade in spaced relation from the inner surface of the hollow space within said blade and terminating at its radially outer end inwardly from the radially outer end of the hollow space within said blade so that the flow passage within each said blade extends from the connection of said blade to said case to the radially outer end of said dividing plate within said blade and then radially inwardly to the connection of said blade to said case.

Claim 4

In the sinter discharge part of a sintering machine, as set forth in claim 1, wherein said blades being arranged in a number of axially spaced transverse planes along said shaft with said blades in each plane being spaced apart equiangularly from the adjacent said blades in the planes.

Claim 5

In the sinter discharge part of a sintering machine, as set forth in claim 1, wherein said blades being arranged in a number of axially spaced transverse planes with said blades in adjacent planes being spaced 90* apart relative to one another.

Claim 6

In the sinter discharge part of a sintering machine, as set forth in claim 1, wherein said cooling medium supply pipe and said cooling medium discharge pipe are located at the same end of said case.

Claim 7

In the sinter discharge part of a sintering machine, as set forth in claim 1, wherein said cooling medium supply pipe and said cooling medium discharge pipe are located at the opposite ends of said case.

Claim 8

In the sinter discharge part of a sintering machine, as set forth in claim 2, wherein said case is formed from a solid body having individual small flow passages machined therein in the axial direction of said shaft and extending between said blades spaced apart in the axial direction of said shaft, the cross-sectional area of said case extending transversely of the axis of said shaft being significantly greater than the cross-sectional area of said flow passages in said case, each said blade being formed from a solid body and having a continuous flow passage machined therein extending outwardly from one of said flow passages in said case to the radially outer end of said blades and then reversing direction and extending inwardly to another said flow passage in said case for affording a continuous flow passage to each said blade from one said flow passage in said case to another said flow passage therein, and the cross-sectional area of said blades being significantly greater than the cross-sectional area of said flow passages in said blades.