公开(公告)号：US5054931A

公开(公告)日：1991-10-08

申请号：US35076

申请日：1987-04-06

Applicant: Robert E. Farnham ,  Fredric W. Prill

Inventor： Robert E. Farnham ,  Fredric W. Prill

IPC: E01C19/10

CPC classification number: E01C19/1036 ,  E01C2019/109

Abstract: A counterflow drum mixer producing less undesirable hydrocarbon gases and capable of more efficiently drying virgin aggregate. The drum mixer has a rotatable drum with first end receiving virgin aggregate and second end removing combined aggregate, reclaimed paving material, and mixed liquid asphalt. A burner projects into the drum from the outlet end and directs hot gases toward the inlet end. A reclaimed asphalt pavement inlet and a liquid asphalt inlet are located within the drum at a point isolated from the hot gases produced by the burner by a burner shield. When the drum mixer is operating, virgin aggregate moves down the drum toward the outlet counterflow to the drying hot gases projected toward the aggregate inlet by the burner. Reclaimed asphalt pavement is entered into the drum at a point behind the burner shield downstream (with respect to the flow of material) from the burner head producing the hot gases and is not exposed directly to those gases. Similarly, the liquid asphalt enters the drum in an inlet downstream of the burner shield, and fines may be mixed with the liquid asphalt at a mixing box. Less hydrocarbons are produced by this apparatus and method because the asphalt contained in the reclaimed asphalt paving material and the liquid asphalt are not directly exposed to radiation or the hot gases coming from the burner. The small amount of hydrocarbons produced are flowed into the burner to be incinerated.

Abstract translation: 反转鼓混合器产生较少的不希望的烃气体并且能够更有效地干燥原始聚集体。 鼓式混合机具有可旋转的滚筒，其第一端接收原始聚集体，第二端除去组合的聚集体，再生铺路材料和混合液体沥青。 燃烧器从出口端伸入滚筒并将热气导向入口端。 回收沥青路面入口和液体沥青入口位于滚筒内的与燃烧器由燃烧器屏蔽产生的热气体隔绝的点处。 当鼓式混合器运行时，原始聚集体向下移动鼓向出口逆流流向由燃烧器向集料入口投射的干燥热气体。 回收的沥青路面在燃烧器罩下方的点处（相对于材料流）从燃烧器头部进入鼓中，产生热气体，并且不直接暴露于那些气体中。 类似地，液体沥青在燃烧器防护罩下游的入口处进入滚筒，并且细粉可以在混合箱中与液体沥青混合。 由于回收沥青铺路材料和液体沥青中所含的沥青不直接暴露于辐射或来自燃烧器的热气体，所以通过该设备和方法生产较少的碳氢化合物。 产生的少量烃流入燃烧器以进行焚化。

公开(公告)号：US4940334A

公开(公告)日：1990-07-10

申请号：US286218

申请日：1988-12-19

Applicant: Joseph E. Musil

Inventor： Joseph E. Musil

IPC: B01F13/10 ,  E01C19/10

CPC classification number: B01F13/1025 ,  E01C19/1036 ,  E01C19/1063 ,  E01C2019/109 ,  E01C2019/1095

Abstract: A reverse flow post-mixer attachment for direct-fixed asphaltic concrete mixers includes a modified discharge box for the downstream end of the drum and an enclosure for the downstream portion of the drum forming a passage along the exterior of the drum. If the smoke point of the liquid asphalt to be added to the material in the drum meets an established standard it is injected into the material upstream of the downstream end of the drum and discharged from the latter end in the normal manner. If the smoke point of the asphalt does not meet the standard, the material exiting the drum is diverted into the passage along the exterior of the drum and the asphalt added there out of the burner stream in the durm. The material and asphalt are then mixed and moved through the passage and finally discharged.

Abstract translation: 用于直接固定沥青混凝土搅拌机的逆流后混合器附件包括用于滚筒的下游端的改进的排出箱和用于滚筒的下游部分的外壳，其形成沿滚筒外部的通道。 如果要添加到滚筒中的材料的液体沥青的烟点满足既定标准，则将其注入到滚筒下游端的上游的材料中，并以正常方式从后端排出。 如果沥青的烟点不符合标准，离开滚筒的材料将沿着鼓的外部转移到通道中，沥青从那里加入到燃烧器流中。 然后将材料和沥青混合并移动通过通道并最终排出。

公开(公告)号：US4616934A

公开(公告)日：1986-10-14

申请号：US668290

申请日：1984-11-05

Applicant: J. Donald Brock

Inventor： J. Donald Brock

IPC: E01C19/10 ,  B28C5/46

CPC classification number: E01C19/1036 ,  E01C19/1004 ,  E01C19/105 ,  E01C19/1072 ,  E01C2019/1095

Abstract: Asphalt plant apparatus comprising a drum dryer, a collection chamber or "knock-out box," a "baghouse," and a separate pugmill coater disposed directly underneath the collection chamber so that dust particles which settle out of the airstream in the collection chamber fall directly into the pugmill coater. The apparatus solves the problem of light-end hydrocarbon pollutants which can be stripped from liquid asphalt by contact with steam, in that the liquid asphalt is introduced not into the drum dryer but into the separate pugmill coater instead. Since no liquid asphalt is present in the drum dryer to coat and control the aggregate dust, the exhaust air from the dryer is more heavily dust-laden than that from a conventional drum mixer. However, the apparatus utilizes a collection chamber to compensate for the additional dust in the exhaust air by recovering part of that dust and dropping it directly into the pugmill coater, where it is mixed with the aggregate and liquid asphalt.

Abstract translation: 沥青设备设备包括滚筒式干燥器，收集室或“拆箱”，“袋式除尘器”和直接位于收集室下方的单独的搅拌机涂布机，使得从收集室中的空气流中沉淀的灰尘颗粒掉落 直接进入磨木机涂布机。 该装置解决了轻馏分碳氢化合物污染物的问题，该污染物可通过与蒸汽接触从液态沥青中汽提出来，因为液体沥青不被引入滚筒式干燥机中，而是引入到单独的搅拌机上。 由于滚筒式干燥机中不存在液体沥青以涂覆和控制聚集粉尘，所以来自干燥机的废气比来自传统鼓式混合机的废气更加沉重。 然而，该装置利用收集室来通过回收一部分灰尘并将其直接滴落到粗木浆涂布机中，在其中与骨料和液体沥青混合，来补偿排出空气中的附加灰尘。

公开(公告)号：US4600379A

公开(公告)日：1986-07-15

申请号：US773950

申请日：1985-09-09

Applicant: E. J. Elliott

Inventor： E. J. Elliott

IPC: E01C19/10 ,  F27B14/00 ,  B28C5/46 ,  E01C19/45 ,  F27B7/02

CPC classification number: E01C19/1036 ,  E01C19/1022 ,  E01C19/1072 ,  E01C2019/1086 ,  E01C2019/109

Abstract: A combination direct/indirect fire drum heating and mixing apparatus includes a frame having an inner cylindrical drum rotatably supported thereto and having an aggregate input in one end thereof and an aggregate output at the other end thereof. A concentric outer drum is mounted around the inner drum and has an aggregate input from the material output of the inner drum and an aggregate output therefrom at the other end thereof, so that aggregate materials can pass through the inner drum and then pass between the inner and outer drums. A burner is mounted to one end of the inner cylindrical drum for directing a flame thereinto and includes a burner blower for blowing atmospheric air under pressure into the burner. An exhaust gas outlet duct operatively connects the exhaust gas from the inner cylindrical drum to the atmosphere or particulate-removing apparatus, while an exhaust gas feedback siphons vapors and gases emitted in the space between the two drums for incineration through the system burner. An asphalt cement injection nozzle injects asphalt cement into the aggregates passing through the concentric outer drum. A second aggregate feed can direct recycled asphalt pavement materials into the concentric outer drum and a dust recovery zone may be provided along with rotating screws for moving the final product discharge or the collected dust.

Abstract translation: 直接/间接防火鼓加热和混合装置的组合包括具有可旋转地支撑在其上的内圆柱形鼓的框架，并且在其一端具有聚集输入，在另一端具有聚集体输出。 同心的外滚筒安装在内滚筒周围，并具有从内滚筒的材料输出的聚集体输入和在其另一端的聚集体输出，使得聚集材料可以通过内滚筒，然后通过内滚筒 和外鼓。 燃烧器安装在内圆柱形滚筒的一端以引导其中的火焰，并且包括用于在压力下将大气空气吹入燃烧器的燃烧器鼓风机。 废气出口管将来自内圆柱形滚筒的废气可操作地连接到大气或微粒去除装置，而排气反馈虹吸在两个鼓之间的空间中排出的蒸气和气体，以通过系统燃烧器焚烧。 沥青水泥注射喷嘴将沥青水泥注入通过同心外桶的聚集体中。 第二聚集饲料可以将再循环的沥青铺装材料引导到同心的外滚筒中，并且可以与用于移动最终产品排放物或收集的灰尘的旋转螺钉一起提供粉尘回收区。

公开(公告)号：US4585354A

公开(公告)日：1986-04-29

申请号：US618097

申请日：1984-06-07

Applicant: Klaus Thesenfitz

Inventor： Klaus Thesenfitz

IPC: E01C19/02 ,  E01C19/05 ,  E01C19/10 ,  B28C5/46

CPC classification number: E01C19/1036 ,  E01C19/05 ,  E01C2019/109

Abstract: An elongated drum rotatable about its horizontal longitudinal axis is surrounded by a sequence of cylindrical screens having different size mesh openings. A burner is located at one end of the drum. A feeder delivers stone chips into the end of the drum opposite the burner, and another feeder delivers used paving asphalt into the end of the drum at which the burner is located. The asphalt feeder has an elbow which passes through the burner flame and an outlet located outside the flame. Openings at the burner end of the drum provide communication between the interior of the drum and an annular space between the drum and the screens. A chimney for discharging dust is located at the stone chips feeder end of the drum.

Abstract translation: 可围绕其水平纵向轴线旋转的细长的滚筒由具有不同尺寸的网孔的圆柱形筛网序列围绕。 燃烧器位于滚筒的一端。 送料器将石屑输送到与燃烧器相对的鼓的端部，另一个进料器将使用过的铺路沥青输送到燃烧器所在的滚筒的端部。 沥青进料器具有穿过燃烧器火焰的弯头和位于火焰外部的出口。 鼓的燃烧器端部处的开口提供鼓的内部和鼓与屏幕之间的环形空间之间的连通。 用于排放灰尘的烟囱位于滚筒的石屑进料器末端。

公开(公告)号：USRE31905E

公开(公告)日：1985-06-04

申请号：US340087

申请日：1982-01-18

Applicant: Robert L. Mendenhall

Inventor： Robert L. Mendenhall

IPC: C08L95/00 ,  E01C19/10

CPC classification number: E01C19/1072 ,  C08L95/00 ,  E01C19/1036 ,  C08L2207/22 ,  E01C2019/1095

Abstract: In a process for producing asphalt-aggregate composition in which used asphaltic concrete is recycled by being heated and mixed in a rotatable drum into which flame and hot gases of combustion are directed, the improvement comprises introducing virgin aggregate in a hot zone of the drum and directly exposing the aggregate to the flame and/or hot gases of combustion, and introducing particles of asphalt-aggregate composition downstream from the hot drum input end, away from direct exposure to the flame and extremely hot gases, in a cooler temperature zone. An improved apparatus includes means for introducing the aggregate at the input drum end for direct exposure to the flame or hot-test gases, and means for introducing the used and recycled asphalt-aggregate composition in a cooler drum zone.

公开(公告)号：US4480922A

公开(公告)日：1984-11-06

申请号：US437501

申请日：1982-12-29

Applicant: Robert L. Mendenhall

Inventor： Robert L. Mendenhall

IPC: E01C19/10 ,  B01F15/02 ,  B01F15/06 ,  B28C5/46

CPC classification number: E01C19/1036 ,  E01C2019/1095

Abstract: An improved recycling apparatus for particulate asphaltic concrete comprises a rotatable drum in which the particulate composition is gradually heated between an input end and an output end having a retractable chute extending into a port at the output end for recovering composition of a selected temperature. The chute contains a temperature sensing device, and the apparatus preferably includes a drive means for inserting or retracting the chute, and thermostat means for selecting a product temperature whereby the drive means causes the chute to be extended into the drum to recover the composition of a selected temperature. In another embodiment, the drum includes first, second, and third lifters each extending along different respective lengths of the drum interior to achieve different exposure of the particulate composition to the heating gases in the drum in the respective different drum sections to achieve improved heating and mixing efficiency.

Abstract translation: 用于颗粒状沥青混凝土的改进的回收设备包括可旋转滚筒，其中颗粒组合物在输入端和输出端之间逐渐加热，输入端和输出端具有延伸到输出端端口的可伸缩斜槽，用于回收组合所选择的温度。 滑槽包含温度检测装置，并且该装置优选地包括用于插入或缩回滑槽的驱动装置和用于选择产品温度的恒温装置，由此驱动装置使滑槽延伸到滚筒中以回收组合物 选择温度。 在另一个实施例中，滚筒包括第一，第二和第三提升器，每个提升器各自沿滚筒内部的相应长度延伸，以实现颗粒组合物与各个不同滚筒部分中的滚筒中的加热气体的不同曝光，以实现改进的加热和 混合效率。

公开(公告)号：US4439040A

公开(公告)日：1984-03-27

申请号：US437495

申请日：1983-01-27

Applicant: Robert L. Mendenhall

Inventor： Robert L. Mendenhall

IPC: E01C19/10 ,  B01F15/02 ,  B01F15/06 ,  B28C5/46

CPC classification number: E01C19/1036 ,  E01C19/1004 ,  E01C19/1027 ,  E01C2019/1095

Abstract: An improved recycling apparatus for particulate asphaltic concrete comprises a rotatable drum in which the particulate composition is gradually heated between an input end and an output end having a retractable chute extending into a port at the output end for recovering composition of a selected temperature. The chute contains a temperature sensing device, and the apparatus preferably includes a drive means for inserting or retracting the chute, and thermostat means for selecting a product temperature whereby the drive means causes the chute to be extended into the drum to recover the composition of a selected temperature. In another embodiment, the drum includes first, second, and third lifters each extending along different respective lengths of the drum interior to achieve different exposure of the particulate composition to the heating gases in the drum in the respective different drum sections to achieve improved heating and mixing efficiency.

公开(公告)号：US4398826A

公开(公告)日：1983-08-16

申请号：US293284

申请日：1981-08-17

Applicant: Robert L. Mendenhall

Inventor： Robert L. Mendenhall

IPC: C10C3/00 ,  E01C19/10 ,  B28C5/42 ,  B28C5/46

CPC classification number: E01C19/1036 ,  C10C3/007 ,  E01C2019/1095

Abstract: An improved asphaltic concrete recycling apparatus comprises an elongated drum having an open inlet port at a first drum end and a product recovery port adjacent a second and opposite drum end, a burner adjacent the first drum end for introducing hot gases of combustion into the inlet port, and an elongated sleeve extended along the interior of the drum intermediate the first and second ends for directing the hot gases of combustion toward the second drum end. In the preferred embodiment, the first end of the sleeve is located in a portion of the drum where a veil of composition is avoided during drum rotation, and the second sleeve end is located in a drum portion where a curtain or veil of composition is formed.

Abstract translation: 一种改进的沥青混凝土回收设备包括：细长的滚筒，其具有在第一鼓端处的开口入口和邻近第二和相对的鼓端的产品回收口，邻近第一鼓端的燃烧器，用于将热的燃烧气体引入入口 ，以及沿着滚筒内部延伸的细长套筒，位于第一和第二端部之间，用于将热的燃烧气体引向第二鼓端。 在优选实施例中，套筒的第一端位于滚筒的一部分中，其中在滚筒旋转期间避免了组合面纱，并且第二套筒端部位于形成幕帘或面纱的滚筒部分中 。

公开(公告)号：US4332478A

公开(公告)日：1982-06-01

申请号：US39383

申请日：1979-05-16

Applicant: Lee V. Binz

Inventor： Lee V. Binz

IPC: B09B5/00 ,  E01C19/10 ,  B28C5/46

CPC classification number: B09B5/00 ,  E01C19/1036 ,  E01C2019/1095

Abstract: A method and apparatus are disclosed which reduce smoke emissions in an asphalt drum mixer. A drum mixer heats virgin aggregate to a relatively high temperature in a first drying zone. Virgin asphalt and, in some cases, recycled pavement material containing asphalt, are added in a second zone. Mixing and discharge of the materials occur in a third zone. The invention provides for air or water cooling of the gases in the drum mixer upstream of the point of entry of the asphalt. This cooling reduces the formation of smoke which would otherwise be generated by excessive heating of the asphalt. The apparatus, according to a preferred embodiment, employs an axially positioned air duct, the outlet end of which discharges cooling air into the drum just upstream of the area of entry of the recycled material.

Abstract translation: 公开了减少沥青鼓混合器中的烟雾排放的方法和装置。 鼓式混合器将第一干燥区中的原始聚集体加热至相对较高的温度。 维生素沥青，在某些情况下，含有沥青的再循环路面材料被添加到第二区域。 材料的混合和排放发生在第三区域。 本发明提供了在沥青进入点上游的鼓式混合器中的气体的空气或水的冷却。 这种冷却减少了否则将由沥青的过度加热产生的烟的形成。 根据优选实施例，该装置采用轴向定位的空气管道，其出口端刚好在再循环材料进入区域的上游将冷却空气排放到滚筒内。