公开(公告)号：WO1995014561A1

公开(公告)日：1995-06-01

申请号：PCT/US1994012729

申请日：1994-11-01

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  MILSTEAD, John

IPC: B28C05/46

CPC classification number: B01F7/0025 ,  E01C19/1036 ,  E01C2019/1086 ,  E01C2019/109 ,  E01C2019/1095

Abstract: A drum mixer (10) includes an elongate hollow rotatable drum (12) having an outer surface, a sleeve (32) having an inner surface, the sleeve being mounted coaxially with the elongate hollow rotatable drum and so as to define an annular chamber (34), and structure for mixing hot mix asphalt in the annular chamber including rake flights (50) mounted on the outer surface of the elongate hollow rotatable drum (12) and in the annular chamber (34) including scouring structure for lifting hot mix asphalt up from a lower portion of the annular chamber along the inner surface of the sleeve (32) through the annular chamber and onto an upper portion of the outer surface of the elongate hollow rotatable drum, the scouring structure including a plurality of shaped scouring fingers (56) extending radially toward the outer surface of the elongate hollow rotatable drum so as to break up hot mix asphalt.

Abstract translation: 鼓式混合器（10）包括具有外表面的细长中空可旋转滚筒（12），具有内表面的套筒（32），所述套筒与细长中空可旋转滚筒同轴地安装并且限定环形室 34），以及用于在环形室中混合热混沥青的结构，包括安装在细长中空可旋转滚筒（12）的外表面上的旋转螺旋（50）和环形室（34）中的包括用于提升热混沥青的冲刷结构 从所述环形室的下部沿着所述套管（32）的内表面通过所述环形室并且延伸到所述细长中空可旋转滚筒的外表面的上部，所述冲刷结构包括多个成形的冲刷指（ 56）径向延伸到细长的中空可旋转滚筒的外表面，以便分解热混沥青。

公开(公告)号：WO1993020282A1

公开(公告)日：1993-10-14

申请号：PCT/US1993003172

申请日：1993-04-05

Applicant: ASTEC INDUSTRIES, INC. ,  MILSTEAD, John

Inventor： ASTEC INDUSTRIES, INC.

IPC: E01C19/10

CPC classification number: E01C19/1004 ,  E01C19/1072 ,  E01C2019/1095

Abstract: A plant which is adapted to process mixtures of recycled paving and aggregate, and which comprises a rotary drum dryer (12) for heating and drying stone aggregate, and an elevator (16) for conveying the heated and dried aggregate to an elevated discharge location. A batch tower (20) is positioned adjacent the elevator (16), and the batch tower (20) comprises an aggregate sizing screen (30) which receives and segregates the aggregate by size, and several underlying aggregate storage bins (32-35), with each aggregate bin receiving aggregate of predetermined average size from the sizing screen. Also, a recycle bin (42) is positioned between and in alignment with the aggregate bins (32-35). A weigh hopper (38) is provided for receiving the aggregate and/or recycle material from the bins, and a pugmill (40) is positioned below the weigh hopper (38) for mixing the material with hot liquid asphalt and then delivering the resulting mix into an underlying truck. A gate (25) is provided for delivering the material from the elevator (16) into either the sizing screen (30) or the recycle bin (42). In addition, a weigh belt conveyor (14) is provided for delivering the aggregate to the drum dryer at a predetermined feed rate by weight, and a weigh belt conveyor (24) is provided for delivering the recycle material into the elevator (16) at a predetermined feed rate by weight.

公开(公告)号：WO1995016826A1

公开(公告)日：1995-06-22

申请号：PCT/US1994014042

申请日：1994-12-01

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  CAMPBELL, Thomas, R.

IPC: E01C19/52

CPC classification number: E01C23/065

Abstract: A roadworking machine (20) can be converted from front load road planing capability to cold in-place recycling capability by replacing the secondary conveyor (44) on the front end of the machine with a mixer (46) such as a standard pugmill. The machine can be converted in the field simply by detaching the conveyor (44) from a mounting assembly on the chassis (26) and by attaching the pugmill to the same mounting assembly (90, 92). The conveyor (44) and pugmill (46) are preferably attachable to the mounting assembly (90, 92) so as to be pivotable with respect to the chassis (26) about both vertical and horizontal axes. The machine as thus constructed permits considerable versatility in both the discharge of milled materials from the secondary conveyor (44) during front load planing and the discharge of recycled materials from the mixer (46) during cold in-place recycling.

Abstract translation: 通过用诸如标准搅拌机的混合器（46）替换机器前端上的二次输送机（44），可将路面加工机（20）从前负荷路面平整能力转换为冷就地回收能力。 通过将输送机（44）从底盘（26）上的安装组件分离并将该搅拌机连接到相同的安装组件（90,92）上，机器可以在现场进行转换。 输送机（44）和搅拌机（46）优选地可附接到安装组件（90,92），以便围绕垂直和水平轴线相对于底盘（26）枢转。 如此构造的机器允许在前负荷计划期间排出来自二次输送机（44）的磨碎材料和在冷就地再循环期间从混合器（46）排出再循环材料的相当多的通用性。

公开(公告)号：WO1994019263A1

公开(公告)日：1994-09-01

申请号：PCT/US1993012041

申请日：1993-12-10

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  MILSTEAD, John

IPC: B65G01/00

CPC classification number: E01C19/10 ,  B65D88/30 ,  E01C19/104 ,  Y10S414/132

Abstract: A portable and self-erecting plant (10) for the batch production of asphalt, and wherein the several components of the plant are split into two subassemblies (26, 28) which are initially mounted to the front and rear portions of a roadway transportable main frame (15). The front subassembly (26) may be lifted to a first temporary position and then moved rearwardly to overlie the rear subassembly (28). The two subassemblies (26, 28) may then be interconnected to form an operational plant, which may be then lifted to its operating position as a unit. A separate elevator (14) is provided which is also roadway transportable, and the elevator (14) may be pivotally connected to the main frame (15) so that it may be raised to an operative vertical position adjacent the plant.

Abstract translation: 一种用于批量生产沥青的便携式和自立式植物（10），其中植物的多个部件被分成两个子组件（26,28），它们最初安装在道路可移动主体的前部和后部 框架（15）。 前部组件（26）可以被提升到第一临时位置，然后向后移动以覆盖后部子组件（28）。 然后可以将两个子组件（26,28）互连以形成可操作的设备，然后将其作为一个单元提升到其操作位置。 还提供了一个单独的升降机（14），其也可以进行道路运输，并且电梯（14）可以枢转地连接到主框架（15），使得其可以升高到与设备相邻的操作垂直位置。

公开(公告)号：WO1993007431A1

公开(公告)日：1993-04-15

申请号：PCT/US1992008373

申请日：1992-09-30

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  SWANSON, Malcolm, L.

IPC: F26B11/04

CPC classification number: E01C19/05 ,  F26B11/0477

Abstract: A rotary drum dryer (10) is disclosed which is useful in the production of asphalt paving composition. The drum (12) incorporates a burner (26) which defines a combustion zone, and a novel dam (30) and flight (34) construction is mounted to the interior of the drum (12) so that the flights (34) surround the combustion zone. The dam (30) is adapted to retain and raise the level of the aggregate flowing through the rotating drum (12) so that the flights (34) pass through the aggregate in the bottom of the drum, and the flights collect a portion of the aggregate on their top surfaces and carry the collected aggregate to an elevated discharge point (P), where the aggregate drops back to the bottom of the drum. The flights (34) serve to shield the metal wall (14) of the drum (12) from the radiant heat energy of the burner flame (F) which would otherwise result in its rapid deterioration, and they also serve to permit the aggregate to be effectively exposed to the radiant heat. The fact that more radiant heat energy is transferred to the aggregate, serves to further lower the temperature of the metal wall (14) of the drum (12). Still further, the fact that the flights (34) pass through the aggregate and are covered by the aggregate through a substantial portion of their circular path of travel, results in the flights (34) being exposed to less radiant heat energy and thus subject to less deterioration.

公开(公告)号：WO1996014548A1

公开(公告)日：1996-05-17

申请号：PCT/US1995014635

申请日：1995-10-31

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  SWANSON, Malcom

IPC: F27B07/02

CPC classification number: F27D99/0033 ,  F23D14/02 ,  F23D14/36 ,  F23D14/62 ,  F23N1/022 ,  F23N1/10 ,  F23N5/18 ,  F23N2025/21 ,  F23N2033/06 ,  F23N2035/06 ,  F23N2035/16 ,  F26B11/028 ,  F27B7/34

Abstract: A premix burner assembly (14) for heating the combustion chamber (12) of a dryer (10) for an HMA plant, soil remediation plant, or the like is designed to meet the very low emission limitations that are imposed in certain areas such as the southern portion of California. The burner assembly (14) includes a burner (16), a primary nozzle (38), an air source (18) connected to the burner (16), a fuel source (20), and a fuel injection system (46) connected to the fuel source (20) and to the burner (16). Premixing is achieved through the supply of a gaseous fuel from the fuel injection system (46) into the burner upstream of the primary nozzle (38) so as to lead to nearly complete premixing of the air and fuel prior to discharge into the combustion chamber (12), thereby permitting combustion of the fuel with only very small amounts of excess air. Burner efficiency is increased and emissions are further reduced by employing air distribution and control devices (48, 50) upstream of the fuel injection system and by carefully controlling the supply of both air and fuel to the burner. Preferably, burner firing is controlled by three separate controllers including a master firing rate controller (106), a gas supply controller (110), and an air supply controller (108) which communicate with one another in different manners depending on whether or not the firing rate is increasing at a particular time.

Abstract translation: 用于加热用于HMA设备，土壤修复设备等的干燥器（10）的燃烧室（12）的预混合燃烧器组件（14）被设计成满足在某些区域施加的非常低的排放限制，例如 加州南部。 燃烧器组件（14）包括燃烧器（16），主喷嘴（38），连接到燃烧器（16）的空气源（18），燃料源（20）和连接的燃料喷射系统 到燃料源（20）和燃烧器（16）。 通过将燃料喷射系统（46）中的气体燃料供应到主喷嘴（38）上游的燃烧器中以便在排放到燃烧室中之前几乎完全预混合空气和燃料来实现预混合（ 12），从而允许燃料仅具有非常少量的过量空气燃烧。 通过在燃油喷射系统的上游使用空气分配和控制装置（48,50），并仔细控制燃烧器的空气和燃料供应，从而提高燃烧器效率并进一步减少排放。 优选地，燃烧器点火由三个单独的控制器控制，包括主喷射速率控制器（106），气体供应控制器（110）和空气供应控制器（108），其以不同的方式彼此通信，这取决于是否 燃烧速率在特定时间内正在增加。

公开(公告)号：WO1996010114A1

公开(公告)日：1996-04-04

申请号：PCT/US1995014524

申请日：1995-09-29

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  CAMPBELL, Thomas, R.

IPC: E01C19/00

CPC classification number: E01C19/48 ,  E01C2301/04

Abstract: An apparatus and method for desegregating and conveying aggregate. A drag slat conveyor (30) has a notch (66) in the floor (42) of its discharge end (67) which causes larger aggregate at the lateral edges (72a, 72b) of the conveyor to drop out of the conveyor (30) after smaller aggregate located between the lateral edges (72a, 72b). The larger and smaller aggregates are thereby reoriented from a side-by-side lateral orientation to a longitudinal orientation. The longitudinally-oriented segregated aggregate may then be thoroughly desegregated in a second conveyor (76).

Abstract translation: 一种用于分离和输送聚集体的设备和方法。 拖曳板条输送机（30）在其排出端（67）的地板（42）中具有凹口（66），其在输送机的侧边缘（72a，72b）处引起较大的聚集体从输送机（30） ）位于横向边缘（72a，72b）之间的较小的聚集体之后。 因此，越来越小的聚集体从并排侧向取向重新定向到纵向。 然后可以在第二输送器（76）中彻底地分离纵向取向的偏析聚集体。

公开(公告)号：WO1995013174A1

公开(公告)日：1995-05-18

申请号：PCT/US1994012730

申请日：1994-11-01

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  BROCK, J., Donald

IPC: B28C05/20

CPC classification number: E01C19/05 ,  B09C1/06 ,  E01C19/1036 ,  E01C19/1072 ,  E01C2019/1086 ,  E01C2019/109

Abstract: An apparatus and method for heating and drying stone aggregate used in the production of asphalt, which also remediates and disposes of contaminated soil. Aggregate is introduced into a drum chamber (36) of a fixed sleeve rotary drum mixer (34) for heating. The aggregate is discharged into an annular chamber (70) and mixed with contaminated soil that has been processed to be suitable for use in asphalt. As the soil is heated, the contaminants are vaporized and drawn into the drum chamber (36) where they are oxidized by high temperature. Secondary aggregate in the form of recycled asphalt pavement (RAP) and/or virgin aggregate are also added to the annular chamber (70) and mixed with the aggregate and soil to form asphalt and to cool the aggregate/soil mixture.

Abstract translation: 用于加工和干燥沥青生产中使用的石料骨料的装置和方法，其还补救和处置污染的土壤。 聚集体被引入用于加热的固定套筒旋转鼓混合器（34）的鼓室（36）中。 聚集体被排放到环形室（70）中并与被处理以适合用于沥青中的污染土壤混合。 当土壤被加热时，污染物被蒸发并被吸入鼓室（36），在那里它们被高温氧化。 回收沥青路面（RAP）和/或原始骨料形式的二次骨料也加入到环形室（70）中，并与骨料和土壤混合形成沥青并冷却骨料/土壤混合物。

公开(公告)号：WO1996010675A3

公开(公告)日：1996-04-11

申请号：PCT/IB1995000990

申请日：1995-09-29

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  CAMPBELL, Thomas, R.

IPC: E01C19/12

Abstract: A paving machine (110, 210) discharges HMA or other paving materials directly on top of a distributing auger (130, 230) located between a paving material storage hopper (116, 216) and the screed (138, 238). The distributing auger (130, 230) is then capable of remixing any partially segregated paving materials and of uniformly distributing the paving materials directly adjacent a previously-paved segment. Materials may be discharged on top of the distributing auger (130) from a discharge opening (150) of a gravity feed hopper (116) located adjacent the distributing auger (130) or from an inclined conveyor (300, 302) delivering materials from a more standard hopper (216) mounted near the front end of the paving machine (210).

公开(公告)号：WO1996009107A1

公开(公告)日：1996-03-28

申请号：PCT/US1995012324

申请日：1995-09-22

Applicant: ASTEC INDUSTRIES, INC.

Inventor： ASTEC INDUSTRIES, INC. ,  SWANSON, Malcolm, L.

IPC: B01D53/56

CPC classification number: E01C19/1063 ,  B01D53/8646 ,  E01C2019/1095 ,  Y02A50/235

Abstract: A hot mix asphalt plant has a catalytic reactor (16) which can effectively and reliably reduce VOC and NOx emissions produced during plant operation. The reactor effectiveness is enhanced by exhausting the gas stream from a primary dryer (12) of the plant at a sufficiently high temperature for effective catalytic reaction. Since withdrawal of gases from the dryer at these elevated temperatures necessarily reduces the effectiveness of the dryer, overall plant efficiency is maintained by using the treated gas stream from the catalytic reactor to heat further the aggregate in a secondary dryer (14), which is preferably a finishing dryer such as fixed sleeve dryer drum coater. Poisoning of the catalyst is avoided by removing at least a large portion of the dust in the gas stream via a high efficiency cyclone (18) prior to introducing the gas stream into the catalytic reactor. Gas exiting the secondary dryer may be further treated in baghouse assembly (22). Ammonia (20) or urea may if desired also be injected into the gas stream prior to its introduction into the catalytic reactor.

Abstract translation: 热拌沥青设备具有催化反应器（16），可有效且可靠地降低工厂运行过程中产生的VOC和NOx排放。 通过在足够高的温度下将来自设备的主干燥器（12）的气流排出以进行有效的催化反应来增强反应器的有效性。 由于在这些升高的温度下从干燥器中取出气体必然会降低干燥器的有效性，所以通过使用来自催化反应器的经处理的气流来进一步在二次干燥器（14）中进一步加热聚集体来维持整个设备的效率， 一种整理干燥机，如固定套筒干燥机滚筒式涂布机。 在将气流引入催化反应器之前，通过高效旋风分离器（18）除去气流中的至少大部分灰尘来避免催化剂的中毒。 离开二次干燥器的气体可以在袋式排气装置（22）中进一步处理。 如果需要，氨（20）或脲可以在引入催化反应器之前注入到气流中。