Screening arrangement

Claim 2

A MATERIAL SCREEINING ARRANGEMENT COMPRISING: A CYLINDRICAL SCREEN MEANS, A ROTOR MEANS DISPOSED INTERIORLY OF SAID CYLINDRICAL SCREEN MEANS FOR DIRECTING MATERIAL TO BE SCREENED IN A RADIALLY OUTWARD DIRECTION TOWARD SAID CYLINDRICAL SCREEN MEANS, SAID ROTOR MEANS INCLUDING AN AXIALLY EXTENDING INTERNAL FREE SPACE FOR RECEIVING THE MATERIAL TO BE SCREENED, MEANS FOR PNEUMATICALLY CONVEYING THE MATERIAL TO BE SCREENED, A CONVEYING CONDUIT MEANS FOR CONNECTING THE PNEUMATIC CONVEYING MEANS WITH SAID INTERNAL FREE SPACE, DRIVING MEANS DISPOSED AT ONE END OF SAID ROTOR MEANS DRIVING SAID ROTOR MEANS, A DISCHARGE MEANS FOR RECEIVING THE RESIDUE OF THE MATERIAL TO BE SCREENED, SAID DISCHARGE MEANS BEING DISPOSED AT THE END OF SAID ROTOR MEANS OPPOSITE SAID DRIVING MEANS, SAID CONVEYING CONDUIT MEANS EXTENDING THROUGH SAID DISCHARGE MEANS INTO SAID INTERNAL FREE SPACE.

Claim 3

An arrangement according to claim 1, wherein said conveying conduit means extends substantially into a central area of said internal free space.

Claim 4

An arrangement according to claim 2, wherein said rotor means includes a plurality of blades, and means for mounting said blades to extend substantially parallel to the axis of said rotor means and spaced from said cylindrical screen means.

Claim 5

An arrangement according to claim 3, wherein said means for mounting said plurality of blades includes a driving disc connected to said driving means, and a hollow cylindrical support means surrounding at least a portion of said conduit means.

Claim 6

An arrangement according to claim 4, wherein said driving means includes a drive motor and a drive shaft, and wherein said driving disc is mounted on said drive shaft.

Claim 7

An arrangement according to claim 5, wherein said hollow cylindrical support means is at least partially apertured.

Claim 8

An arrangement according to claim 6, wherein said hollow cylindrical support means is constituted by a helical spring means, said plurality of blades being fixed to the turns of said helical spring means.

Claim 9

An arrangement according to claim 7, wherein said rotor means is mounted in said cylindrical screen means solely at said driving means.

Claim 10

An arrangement according to claim 8, wherein each of said blades is slightly twisted about the axis of said rotor means.

Claim 11

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for conveying the material to be screened into said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, a discharge means for receiving the residue of the material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, and said means for conveying the material to be screened includes a conveying conduit means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 12

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for conveying the material to be screened into said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, a discharge means for receiving the residue of the material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, and said means for conveying the material to be screened includes a conveying conduit means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 13

An arrangement according to claim 10, wherein said means for conveying the material to be screened includes a conveying conduit means extending substantially into a central area of said internal space.

Claim 14

An arrangement according to claim 10, wherein said rotor means in mounted in said cylindrical screen means solely at said driving means.

Claim 15

An arrangement according to claim 10, wherein said rotor means includes a plurality of blades, and means for mounting said blades to extend substantially parallel to the axis of said rotor means and spaced from said cylindrical screen means, each of said blades being slightly twisted about the axis of said rotor means.

Claim 16

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for conveying the material to be screened into said internal free space including a conveying conduit means extending substantially into a central area of said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, a discharge means for receiving the residue of the material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 17

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for conveying the material to be screened into said internal free space including a conveying conduit means extending substantially into a central area of said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, a discharge means for receiving the residue of the material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 18

An arrangement according to claim 14, wherein said rotor means includes a plurality of blades, and means for mounting said blades to extend substantially parallel to the axis of said rotor means and spaced from said cylindrical screen means.

Claim 19

An arrangement according to claim 15, wherein said means for mounting said plurality of blade includes a driving disc connected to said driving means, and a hollow cylindrical support means surrounding at least a portion of said conveying conduit means.

Claim 20

An arrangement according to claim 16, wherein said hollow cylindrical support means is at least partially apertured.

Claim 21

An arrangement according to claim 16, wherein said hollow cylindrical support means is constituted by a helical spring means, said plurality of blades being fixed to the turns of said helical spring means.

Claim 22

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for hydraulically conveying the material to be screened, a conveying conduit means for connecting said hydraulic conveying means to said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, discharge means for receiving the residue of material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 23

A material screening arrangement comprising: a cylindrical screen means, a rotor means disposed interiorly of said cylindrical screen means for directing material to be screened in a radially outward direction toward said cylindrical screen means, said rotor means including an axially extending internal free space for receiving the material to be screened, means for hydraulically conveying the material to be screened, a conveying conduit means for connecting said hydraulic conveying means to said internal free space, driving means for driving said rotor means disposed at one end of said rotor means, discharge means for receiving the residue of material to be screened, said discharge means being disposed at the end of said rotor means opposite said driving means, said conveying conduit means extending through said discharge means into said internal free space.

Claim 24

An arrangement according to claim 19, wherein said conveying conduit means extends substantially into a central area of said internal free space.

Claim 25

An arrangement according to claim 20, wherein said rotor means includes a plurality of blades, and means for mounting said blades to extend substantially parallel to the axis of said rotor means and spaced from said cylindrical screen means.

Claim 26

An arrangement according to claim 21, wherein said means for mounting said plurality of blades includes a driving disc connected to said driving means, and a hollow cylindrical support means surrounding at least a portion of said conveying conduit means.

Claim 27

An arrangement according to claim 22, wherein said driving means includes a drive motor and a drive shaft, and wherein said driving disc is mounted on said drive shaft.

Claim 28

An arrangement according to claim 23, wherein said hollow cylindrical support means is at least partially apertured.

Claim 29

An arrangement according to claim 24, wherein said hollow cylindrical support means is constituted by a helical spring means, said plurality of blades being fixed to the turns of said helical spring means.

Claim 30

An arrangement according to claim 25, wherein said rotor means is mounted in said cylindrical screen means solely at said driving means.

Claim 31

An arrangement according to claim 26, wherein each of said blades is slightly twisted about the axis of said rotor means.