A scroll conveyor tile protection or any other material subject to wear with a weldable support and a wear resistant insert, not necessary weldable. The support is fit with a flat surface and shoulder allowing for precise positioning of tile on a scroll flight to be protected. At least one opening,
A scroll conveyor tile protection or any other material subject to wear with a weldable support and a wear resistant insert, not necessary weldable. The support is fit with a flat surface and shoulder allowing for precise positioning of tile on a scroll flight to be protected. At least one opening, preferably at its center, allows for insertion and assembly of a complementary shaped insert. The unit setting up on the scroll flight and the contact between the flight faces and the unit faces allows for creating a dove tail locking system. Welding of the support permanently insures locking of the system and insert being maintained without being otherwise fixed beyond this mechanical clamping.
대표청구항▼
1. A wear-resistant tile for attachment to a scroll flight of a rotor, comprising: a support part attachable to the scroll flight, having a front face and a back face, and a profiled opening passing entirely through the front and back faces; andan insert having one, profiled portion fit within and r
1. A wear-resistant tile for attachment to a scroll flight of a rotor, comprising: a support part attachable to the scroll flight, having a front face and a back face, and a profiled opening passing entirely through the front and back faces; andan insert having one, profiled portion fit within and retained mechanically to the support part by mating of said profiles through the opening of the support part, and an other portion defining a primary wear-resistant surface, whereinthe support part has upper and lower regions with respective front and back surfaces;the upper region of the support part has a profiled front surface defining an upper portion of the opening, including an undercut, and a profiled back surface;the lower region defines a lower, ledge portion of the opening;the one portion of the insert has a back upper surface that fits within the upper portion of the opening and includes a projecting surface that fits within the undercut of the support part, and a lower portion including a bottom surface that mates with the ledge portion of the lower portion of the opening;whereby when said bottom surface is mated with said ledge portion, said undercut mechanically retains the projecting surface within the support part. 2. The wear-resistant tile according to claim 1, wherein said one portion is an integral, finger-like extension from said other portion. 3. The wear-resistant tile according to claim 1, wherein the other portion is a plate with a front face defining said primary wear-resistant surface, said face having opposed top and bottom spanning a height, and opposed sides spanning a width; and said one portion projects downwardly from the plate with a width less than the width of the front face. 4. The wear-resistant tile according to claim 1, wherein the support part has a profiled front surface defining the opening, including an undercut, and a profiled back surface; and the one portion of the insert has a back surface that fits within the opening and includes a projecting surface that fits within the undercut of the support part. 5. The wear-resistant tile according to claim 1, wherein the ledge inclines upwardly from the back surface to the front surface of the lower region; andthe bottom surface inclines downwardly from the front to the back surfaces of said one portion the insert;whereby when said bottom surface is mated with said ledge, said undercut and said ledge mechanically retain the insert at both the upper and lower portions of the opening. 6. The wear-resistant tile according to claim 1, wherein the support part has at least one groove-like surface and the insert has a complementary shape that can be fit in the groove-like surface. 7. The wear-resistant tile of claim 1, wherein a plurality of said wear-resistant tiles are provided at the circumferential edge of a scroll flight of a rotor, with each respective support part fixed to the flight and each insert retained only mechanically to a support part. 8. A conveying device having a rotating scroll flight with circumferentially attached wear-resistant tiles, wherein each tile comprises a support part fixed to the scroll flight and defining a profiled opening; andan insert having one portion fits within and is retained only mechanically to the support part through the opening of the support part and another portion defining a primary wear-resistant surface;wherein the support part has a front face and a back face, with the profiled opening passing entirely through the front and back faces; andthe one portion of the insert is profiled to fit within and be retained only mechanically to the support part by mating of said profiles through the opening of the support part,whereinthe support part has upper and lower regions attached to the flight, with respective front and back surfaces;the back surface of the upper region is offset from the back surface of the lower region;the offset is defined by a shoulder aligned within the opening of the support part;the upper region of the support part has a profiled front surface defining an upper portion of the opening, including an undercut, and a profiled back surface;the lower region defines a lower, ledge portion of the opening;the one portion of the insert has a back upper surface that fits within the upper portion of the opening and includes a projecting surface that fits within the undercut of the support part, and a lower portion including a bottom surface that mates with the ledge portion of the lower portion of the opening; andsaid shoulder is attached to the circumferential edge of the flight and the bottom of the one portion of the insert is flush with the front of the flight such that said bottom surface is mated with said ledge portion and said undercut mechanically retains the projecting surface within the support part. 9. The conveying device according to claim 8, wherein the support part is welded to the flight. 10. The conveying device according to claim 8, wherein the support part has a profiled front surface defining the opening, including an undercut, and a profiled back surface; the one portion of the insert has a back surface that fits within the opening and includes a projecting surface that fits within the undercut of the support part. 11. The conveying device according to claim 8, wherein the ledge portion inclines upwardly from the back surface to the front surface of the lower region; andthe bottom surface inclines downwardly from the front to the back surfaces of said one portion the insert;whereby when said bottom surface is mated with said ledge portion, said undercut and said ledge mechanically retain the insert at both the upper and lower portions of the opening. 12. The conveying device according to claim 8, wherein the support part has at least one groove-like surface and the insert has a complementary rise that fits in the groove-like surface. 13. A conveying device having a rotating scroll flight with circumferentially attached wear-resistant tiles, wherein each tile comprises a support part fixed to the scroll flight and defining a profiled opening; andan insert having one portion fits within and is retained only mechanically to the support part through the opening of the support part and another portion defining a primary wear-resistant surface;wherein the support part has a front face and a back face, with the profiled opening passing entirely through the front and back faces; andthe one portion of the insert is profiled to fit within and be retained only mechanically to the support part by mating of said profiles through the opening of the support part,wherein said one portion of the insert is locked mechanically to the support part through a dovetail connection with the support part and a mechanical retention of the other portion against the flight by the support part. 14. A wear-resistant tile for attachment to a scroll flight of a rotor, comprising: a support part attachable to the scroll flight, having a front face, a back face, and upper, lower, and central portions, with the central portion defining a profiled opening passing entirely through the front and back faces; andan insert having a front face defining a primary wear-resistant surface, a back face, and upper, lower, and central portions, with the central portion including a profiled surface at the back face that fits within and is mechanically retained to the support part by mating of said profiles through the opening of the support part,wherein when the insert fits within and is retained mechanically to the support part, the lower portion of the support part at the back face and the lower portion of the insert at the back face are coplanar. 15. The wear-resistant tile according to claim 14, wherein an upper edge of the lower portion of the support part defines a portion of the profiled surface of the opening in the support part that is angled upwardly from back face to front face;the lower portion of the insert defines a bottom surface that is angled upwardly from back face to front face; andwhen the insert fits within and is retained mechanically to the support part, such that the support part at the back face and the lower portion of the insert at the back face are coplanar, the angled upper edge of the lower portion of the support part bears against the angled bottom surface of the insert. 16. The wear-resistant tile according to claim 14, wherein a region of the upper portion of the support part defines a downward facing undercut between the back face to front face;the profiled surface at the back of the central portion of the insert defines a projection that is complementary to the undercut of the support part; andwhen the insert fits within the support part, such that the support part at the back face and the lower portion of the insert at the back face are coplanar, the projection on the insert interlocks with the undercut on the support part to retain the insert within the support part only mechanically. 17. A conveying device having a rotating scroll flight with circumferentially attached wear-resistant tiles, comprising: a support part attached to the scroll flight, having a front face, a back face, and upper, lower, and central portions, with the central portion defining a profiled opening passing entirely through the front and back faces;an insert having a front face defining a primary wear-resistant surface, a back face, and upper, lower, and central portions, with the central portion including a profiled surface at the back face that is mechanically mated with the profile of the opening on the support part;wherein the upper back portion of the insert is in coplanar contact with the upper front portion of the support part; andwherein the lower back portion of the support part and the lower back portion of the insert are in coplanar contact with the scroll flight;whereby the support part is retained only mechanically to the scroll flight. 18. The conveying device according to claim 17, wherein an upper edge of the lower portion of the support part defines a portion of the profiled surface of the opening in the support part that is angled upwardly from back face to front face;the lower portion of the insert defines a bottom surface that is angled upwardly from back face to front face; andthe angled upper edge of the lower portion of the support part bears against the angled bottom surface of the insert.
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이 특허에 인용된 특허 (4)
Shapiro Leonard (Upper Darby PA), Hard surfacing for a centrifuge conveyor.
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