IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0902893
(2010-10-12)
|
등록번호 |
US-8342433
(2013-01-01)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
18 |
초록
▼
Apparatus and method are disclosed for processing recyclable asphalt material. A drum has a polygonal cross-sectional configuration providing a plurality of substantially flat wall sides. Tubular breaker members within the drum are juxtaposed with corresponding flat wall sides. The relative location
Apparatus and method are disclosed for processing recyclable asphalt material. A drum has a polygonal cross-sectional configuration providing a plurality of substantially flat wall sides. Tubular breaker members within the drum are juxtaposed with corresponding flat wall sides. The relative location of the breaker members and the flat wall sides effects a cascading of recyclable asphalt material over the breaker members and between the breaker members and the flat wall sides as the drum is rotated so that recyclable asphalt material is tumbled within the drum, thereby simultaneously reducing the size of relatively large pieces to aggregate-sized pieces and heating the mass containing the desired aggregate-sized pieces for delivery of the heated mass from the drum.
대표청구항
▼
1. Apparatus for processing recyclable asphalt material received from the field in relatively large pieces for delivery in a heated mass containing desired smaller aggregate-sized pieces for reuse, the apparatus comprising: an elongate drum having a drum wall extending along a longitudinal axis betw
1. Apparatus for processing recyclable asphalt material received from the field in relatively large pieces for delivery in a heated mass containing desired smaller aggregate-sized pieces for reuse, the apparatus comprising: an elongate drum having a drum wall extending along a longitudinal axis between a first end and a second end, the drum wall having an inner surface following a polygonal lateral cross-sectional configuration establishing an inner chamber bounded by a plurality of wall sides extending between included angles;a mounting arrangement mounting the drum for rotation in a given direction of rotation about the longitudinal axis, with the longitudinal axis tilted at an acute angle so as to elevate one of the first and second ends relative to the other of the first and second ends;a heating chamber adjacent the first end of the drum, the heating chamber having an interior;a plurality of tubular breaker members extending along the drum between the first and second ends of the drum, the breaker members being placed in an array substantially parallel to the longitudinal axis, located between the longitudinal axis and the wall of the drum, each breaker member being spaced outwardly from the longitudinal axis and spaced inwardly from a corresponding wall side of the drum along a line extending in a lateral direction outwardly from the longitudinal axis and intersecting the corresponding side intermediate corresponding included angles;a heat conduit extending along the drum between the first and second ends of the drum, the heat conduit being located within the array of breaker members, spaced laterally inwardly from the array;a heater for supplying heat to heat gases in the interior of the heating chamber;the interior of the heating chamber, the heat conduit and the breaker members being connected serially such that heated gases from the interior of the heating chamber are conducted from adjacent the first end of the drum to adjacent the second end of the drum and are returned to adjacent the first end of the drum serially through the heat conduit and then through the breaker members;a feeder for feeding the large pieces of recyclable asphalt material received from the field into the array of breaker members within the drum, adjacent the elevated one of the first and second ends of the drum; anda drive arrangement for rotating the drum, and the array of breaker members about the longitudinal axis so as to tumble the large pieces of recyclable asphalt material within the drum, spaced laterally outwardly from the heat conduit and cascaded over the breaker members to be passed between adjacent breaker members and between the breaker members and the corresponding wall sides of the drum wall, thereby simultaneously reducing the size of the relatively large pieces to the desired aggregate-sized pieces and heating the mass containing the desired aggregate-sized pieces, which heated mass proceeds toward the other of the first and second ends of the drum for delivery from the drum. 2. The apparatus of claim 1 wherein each wall side is substantially flat. 3. The apparatus of claim 1 wherein each laterally extending line intersects a corresponding wall side substantially midway between the corresponding included angles to place each breaker member substantially equidistant from each corresponding included angle. 4. The apparatus of claim 3 wherein the array of breaker members includes a breaker member placed adjacent each wall side. 5. The apparatus of claim 4 wherein the longitudinal axis extends centrally along the drum and each laterally extending line comprises a radius extending from the longitudinal axis to the drum wall. 6. The apparatus of claim 5 wherein each wall side is substantially flat. 7. The apparatus of claim 6 wherein the heat conduit includes an exterior heat conduit surface having a prescribed surface area, each breaker member includes an exterior breaker member surface having a predetermined surface area, and the outer heat conduit prescribed surface area is substantially greater than each exterior breaker member predetermined surface area. 8. The apparatus of claim 7 wherein the exterior breaker member surface of each breaker member follows a circular lateral cross-sectional configuration. 9. The apparatus of claim 8 wherein the exterior heat conduit surface of the heat conduit follows a circular lateral cross-sectional configuration. 10. The apparatus of claim 7 wherein the exterior heat conduit surface of the heat conduit follows a circular lateral cross-sectional configuration. 11. The apparatus of claim 7 wherein the heat conduit surface of the heat conduit follows a polygonal lateral cross-sectional configuration. 12. The apparatus of claim 11 wherein the plurality of wall sides bounding the inner chamber of the drum includes a prescribed number of wall sides, and the heat conduit surface includes a predetermined number of external sides, the predetermined number of external sides being equal to the prescribed number of wall sides. 13. The apparatus of claim 12 wherein the external sides are substantially flat, and each external side confronts a corresponding wall side and extends laterally substantially parallel to the corresponding wall side. 14. The apparatus of claim 1 including an outer conduit extending along the drum wall outside the inner chamber, the outer conduit being juxtaposed with corresponding wall sides and communicating with the heat conduit adjacent the second end of the drum for conducting heated gases from the heat conduit along the drum wall toward the first end of the drum. 15. The apparatus of claim 1 wherein the mounting arrangement includes: at least one mounting ring placed coaxial with the longitudinal axis and spaced from the drum by a radial spacing;support rollers supporting the mounting ring for rotation about the longitudinal axis; andcouplings coupling the drum with the mounting ring, each coupling including a substantially rigid link having first and second link ends, the first link end being coupled to the drum for pivotal movement relative to the drum, and the second link end being coupled to the mounting ring for pivotal movement relative to the mounting ring, the first and second link ends being offset circumferentially relative to one another by an offset angle such that the link is movable to vary the radial spacing in response to thermal expansion and contraction of the drum relative to the mounting ring. 16. The apparatus of claim 15 wherein the offset angle places the first link end circumferentially behind the second link end with respect to the given direction of rotation. 17. A method for processing recyclable asphalt material received from the field in relatively large pieces for delivery in a heated mass containing desired smaller aggregate-sized pieces for reuse, the method comprising: providing an elongate drum having a drum wall extending along a longitudinal axis between a first end and a second end, the drum wall having an inner surface following a polygonal lateral cross-sectional configuration establishing an inner chamber bounded by a plurality of wall sides extending between included angles;mounting the drum for rotation in a given direction of rotation about the longitudinal axis, with the longitudinal axis tilted at an acute angle so as to elevate one of the first and second ends relative to the other of the first and second ends;providing a plurality of tubular breaker members extending along the drum between the first and second ends of the drum, the breaker members being placed in an array substantially parallel to the longitudinal axis, located between the longitudinal axis and the wall of the drum, each breaker member being spaced outwardly from the longitudinal axis and spaced inwardly from a corresponding wall side of the drum along a line extending in a lateral direction outwardly from the longitudinal axis and intersecting the corresponding side intermediate corresponding included angles;conducting heated gases along a path of travel through the breaker members;feeding the large pieces of recyclable asphalt material received from the field into the array of breaker members within the drum, adjacent the elevated one of the first and second ends of the drum; androtating the drum, and the array of breaker members about the longitudinal axis so as to tumble the large pieces of recyclable asphalt material within the drum and cascade the recyclable asphalt material over the breaker members and pass the recyclable asphalt material between adjacent breaker members and between the breaker members and the corresponding wall sides of the drum wall, thereby simultaneously reducing the size of the relatively large pieces to the desired aggregate-sized pieces and heating the heated mass containing the desired aggregate-sized pieces, which mass proceeds toward the other of the first and second ends of the drum for delivery from the drum. 18. The method of claim 17 including locating each breaker member such that each laterally extending line intersects a corresponding wall side substantially midway between the corresponding included angles to place each breaker member substantially equidistant from each corresponding included angle. 19. The method of claim 18 including placing a breaker member adjacent each wall side. 20. The method of claim 17 including mounting the drum such that the longitudinal axis extends centrally along the drum and each laterally extending line comprises a radius extending from the longitudinal axis to the drum wall. 21. The method of claim 17 including locating a heat conduit within the array of breaker members, spaced laterally inwardly from the array and extending along the drum between the first and second ends of the drum, such that the heated gases are passed serially through the heat conduit in a direction from the first end of the drum toward the second end of the drum to radiate heat from the heat conduit to the recyclable asphalt material, and then through the array of breaker members in a direction from the second end of the drum toward the first end of the drum to conduct heat from the breaker members to the recyclable asphalt material. 22. The method of claim 21 including providing an outer conduit extending along the drum wall outside the inner chamber, in juxtaposition with corresponding wall sides, and communicating with the heat conduit adjacent the second end of the drum, and passing heated gases from the heat conduit through the outer conduit in the direction from the second end of the drum toward the first end of the drum to conduct heat from the outer conduit to the recyclable asphalt material.
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