Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds includes a first premixing chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a fi
Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds includes a first premixing chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a first binder ingredient to produce a first sand/binder ingredient mixture. A second premixing chamber, separate from the first premixing chamber, encloses a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling sand with a second binder ingredient to produce a second sand/binder ingredient mixture. A final mixing chamber includes agitators for receiving the sand/binder ingredient mixtures and blending them into a composite mixture while simultaneously transporting the composite mixture to a final discharge station. A single power-driven unit operates for driving the first and second bladed shafts, which in turn, operate the first and second agitators.
대표청구항▼
1. Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds comprising: first premixing means defined by a first tubular chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for
1. Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds comprising: first premixing means defined by a first tubular chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a first binder ingredient to produce a first sand/binder ingredient mixture; second premixing means defined by a second tubular chamber disposed adjacent and separate from the first premixing means enclosing a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling sand with a second binder ingredient to produce a second sand/binder ingredient mixture; final mixing means defined by a blending chamber enclosing a first agitator means rotatably driven by the first bladed shaft and a second agitator means rotatably driven by the second bladed shaft operable for receiving and blending the first and second sand/binder ingredient mixtures into a composite mixture while simultaneously transporting the composite mixture to a final discharge station, the first agitator means being rotatable about a longitudinal axis aligned with the first axis and the second agitator means being rotatable about a longitudinal axis aligned with the second axis; and single power-driven means operable for driving the first and second bladed shafts. 2. The foundry apparatus of claim 1 wherein the blending chamber is defined by a unitary chamber mounted on the first and second premixing means defining a volume having a pair of communicating semicylindrical sections which enclose the first and second agitator means. 3. The foundry apparatus of claim 2 wherein each first and second bladed shaft includes a nonbladed shaft extension dimensioned to project into the blending chamber for providing a mount for the first and second agitator means, respectively. 4. The foundry apparatus of claim 3 wherein the first and second agitator means each include a hollow shaft from which conveying paddles outwardly extend to a position adjacent the interior wall surfaces of the blending chamber, the hollow shafts being dimensioned for slidable reception upon an associated one of the shaft extensions. 5. The foundry apparatus of claim 4 wherein the conveying paddles are provided with wiper means at their distal ends for facilitating removal of material adhered to the interior wall surfaces of the blending chamber. 6. The foundry apparatus of claim 5 wherein the blending chamber includes a discharge opening disposed for directing the composite mixture downwardly in a substantially vertical direction, and wherein the first and second agitator means include discharge paddles disposed above the discharge opening for forcing the composite mixture vertically downwardly therethrough during rotation of the first and second bladed shafts. 7. The foundry apparatus of claim 6 wherein the discharge paddles are dimensioned lengthwise for enabling opposed ones on the first and second agitator means to overlap, above the discharge opening during rotation of the first and second bladed shafts, to force the composite mixture vertically downwardly therethrough. 8. The foundry apparatus of claim 7 wherein the first and second tubular chambers are connected by a common flange means at a discharge end thereof, and wherein the blending chamber includes a corresponding flange means detachably engageable with the flange means of the first and second tubular chambers. 9. The foundry apparatus of claim 8 further including an end plate detachably mountable on the end of the blending chamber for enclosing same and providing bearing mounts for the shaft extensions. 10. The foundry apparatus of claim 9 wherein the shaft extensions and the hollow shafts of the first and second agitator means are orthogonal in cross section. 11. The foundry apparatus of claim 2 wherein the power-driven means is disposed beneath the first and second premixing means, and includes a drive shaft coupled to a transmission means coupled to the first and second bladed shafts. 12. The foundry apparatus of claim 11 wherein the transmission means is defined by gear means connected to the first and second bladed shafts and coupling means provided on the drive shaft. 13. The foundry apparatus of claim 12 wherein the power-driven means is mounted in a base structure which supports the first and second premixing means and the final mixing means. 14. The foundry apparatus of claim 2 wherein a plurality of blades are mounted on the first and second bladed shafts, each blade being spaced-apart longitudinally therealong and staggered radially, in the direction of shaft rotation, from its immediate predecessor blade. 15. The foundry apparatus of claim 14 wherein the first and second bladed shafts are orthogonal in cross section, with the blades being mounted on the planar faces of each of the first and second bladed shafts, staggered radially generally 90° from one another. 16. The foundry apparatus of claim 15 wherein each of the blades includes planar faces, disposed at an angle in the range of 20°-40° relative to the longitudinal axis of each bladed shaft. 17. Apparatus for mixing and conveying materials comprising: first premixing means defined by a first tubular chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling particulate material with a first ingredient to produce a first particulate material/ingredient mixture; second premixing means defined by a second tubular chamber disposed adjacent and separate from the first premixing means enclosing a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling particulate material with a second ingredient to produce a second particulate material/ingredient mixture; final mixing means defined by a blending chamber enclosing a first agitator means rotatably driven by the first bladed shaft and a second agitator means rotatably driven by the second bladed shaft operable for receiving and blending the first and second particulate material/ingredient mixtures into a composite mixture while simultaneously transporting the composite mixture to a final discharge station, the first agitator means being rotatable about a longitudinal axis aligned with the first axis and the second agitator means being rotatable about a longitudinal axis aligned with the second axis; and single power-driven means operable for driving the first and second bladed shafts. 18. The apparatus of claim 17 wherein the blending chamber is defined by a unitary chamber mounted on the first and second premixing means defining a volume having a a pair of communicating semicylindrical sections which enclose the first and second agitator means. 19. The apparatus of claim 18 wherein each first and second bladed shaft includes a nonbladed shaft extension dimensioned to project into the blending chamber for providing a mount for the first and second agitator means, respectively. 20. The apparatus of claim 19 wherein the first and second agitator means each include a hollow shaft from which conveying paddles outwardly extend to a position adjacent the interior wall surfaces of the blending chamber, the hollow shafts being dimensioned for slidable reception upon an associated one of the shaft extensions. 21. The apparatus of claim 20 wherein the conveying paddles are provided with wiper means at their distal ends for facilitating removal of material adhered to the interior wall surfaces of the blending chamber. 22. The apparatus of claim 21 wherein the blending chamber includes a discharge opening disposed for directing the composite mixture downwardly in a subtantially vertical direction, and wherein the first and second agitator means include discharge paddles disposed above the discharge opening for forcing the composite mixture vertically downwardly therethrough during rotation of the first and second bladed shafts. 23. The apparatus of claim 22 wherein the discharge paddles are dimensioned lengthwise for enabling opposed ones on the first and second agitator means to overlap, above the discharge opening during rotation of the first and second bladed shafts, to force the composite mixture vertically downwardly therethrough. 24. The apparatus of claim 23 wherein the first and second tubular chambers are connected by a common flange means at a discharge end thereof, and wherein the blending chamber includes a corresponding flange means detachably engageable with the flange means of the first and second tubular chambers. 25. The apparatus of claim 24 further including an end plate detachably mountable on the end of the blending chamber for enclosing same and providing bearing mounts for the shaft extensions.
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이 특허에 인용된 특허 (5)
Krause Ulrich (Prinz Christianweg 13 6100 Darmstadt DEX) Krause Peter (Park Rosenhoehe 4 6100 Darmstadt DEX), Apparatus for mixing construction materials.
Flock Steven D. (Beaverton OR) Hayes Roger A. (Tigard OR), Method and apparatus for combining high speed horizontal and high speed vertical continuous mixing of chemically bonded.
Hulslander Gary L. (Portland OR) Mills Gary E. (Portland OR) Harris David L. (Oregon City OR), Mixing apparatus having plurality of different blades with multiple functions.
Aseltine Leroy G. (99 Birchwood Dr. Nazareth PA 18064) Longenbach Gary F. (3231 Farmersville Rd. Bethlehem PA 18017), Apparatus and method for forming finely divided dry materials from wet materials having a tendency to form lumps.
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