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CN102368914A - 挤出和调节设备 - Google Patents

挤出和调节设备 Download PDF

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CN102368914A
CN102368914A CN2010800143344A CN201080014334A CN102368914A CN 102368914 A CN102368914 A CN 102368914A CN 2010800143344 A CN2010800143344 A CN 2010800143344A CN 201080014334 A CN201080014334 A CN 201080014334A CN 102368914 A CN102368914 A CN 102368914A
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CN102368914B (zh
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S·施密特
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Mars Inc
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23PSHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
    • A23P30/00Shaping or working of foodstuffs characterised by the process or apparatus
    • A23P30/20Extruding
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23NMACHINES OR APPARATUS FOR TREATING HARVESTED FRUIT, VEGETABLES OR FLOWER BULBS IN BULK, NOT OTHERWISE PROVIDED FOR; PEELING VEGETABLES OR FRUIT IN BULK; APPARATUS FOR PREPARING ANIMAL FEEDING- STUFFS
    • A23N17/00Apparatus specially adapted for preparing animal feeding-stuffs
    • A23N17/005Apparatus specially adapted for preparing animal feeding-stuffs for shaping by moulding, extrusion, pressing, e.g. pellet-mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58Component parts, details or accessories; Auxiliary operations
    • B29B7/582Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/16Auxiliary treatment of granules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/355Conveyors for extruded articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/10Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • F26B17/103Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with specific material feeding arrangements, e.g. combined with disintegrating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/049Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Manufacturing & Machinery (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

一种挤出和调节设备,所述挤出和调节设备具有挤出机(2),在传送位置中,所述挤出机通入传送器外壳(10),所述传送器外壳以密封的方式连接到气动供应管路(40)并且连接到气动传送管路(16),被挤出的材料通过所述传送管路(16)可从所述传送器外壳气动地尤其是借助过热蒸汽被移除,其特征在于,所述挤出机(2)可以从所述传送位置移动到绕过位置中,在所述绕过位置中,所述挤出机(2)通向所述传送器外壳(19)的外部,所述传送器外壳具有用来产生密封的装置(6),当所述挤出机(2)处于所述传送位置和绕过位置时,该用来产生密封的装置用于使所述供应管路和传送管路(40,16)以及所述传送器外壳(10)相对于环境密封。

Description

挤出和调节设备
技术领域
本发明涉及挤出和调节设备,所述挤出和调节设备具有挤出机,在传送位置中,所述挤出机通入传送器外壳,所述传送器外壳以密封的方式连接到气动供应管路并且到气动传送管路,通过所述传送管路可从所述传送器外壳气动地尤其是借助于过热蒸汽移除挤出的材料。
背景技术
从US5505567已知这种类型的设备,在该设备中设置封闭的气动传送回路,该气动传送回路在传送器外壳、离心旋风分离器和送风机之间延伸。在挤出机下面,在传送器外壳中存在折板,如果挤出机产生不需要的产物(诸如当启动挤出过程时),可以打开该折板。这里的缺点是,折板将整个系统打开通向环境,因此该系统内的用于气动运输的气体可以逃逸,并且周围空气可以进入该系统。另一缺点是,由于该系统包含空气并且其中包含的湿气不能容易地冷凝,因此难以回收从挤出的材料释放的热。
发明内容
本发明的目标在于改进这种类型的挤出和调节设备,使得当启动该系统时,如果挤出机产生不需要的产物,则保证气动传送系统本身维持封闭并且不接触环境。
另一目标在于产生毫无疑问地回收由挤出机引入该系统的热的可能性。
根据本发明,通过允许挤出机从传送位置移动到挤出机通向传送器外壳的外部的绕过位置,在普通类型的挤出和调节设备中实现这个目标,其中在传送位置和绕过位置中供应管路以相对于环境密封的方式经由传送器外壳连接到传送管路。
换句话说,该布置使得传送器外壳可以离开传送位置进入绕过位置,而供应管路和传送管路以及传送器外壳自身始终维持相对于环境密封,使得传送气体不能逃逸并且周围空气不能进入。存在一种装置,当挤出机处于绕过位置时,该装置密封传送器外壳。该装置优选地设计成使得在供应管路、传送管路和传送器外壳之间相对于环境的永久密封被保证,并且在挤出机的传送位置和绕过位置中以及在每一个中间位置中的供应管路和传送管路之间的连接被保证。
可以预想,切割装置可以布置在传送器外壳中,该切割装置在传送器外壳的传送位置中与挤出机的挤出开口协作。切割装置可具有刀头部,该刀头部在挤出机的顶板的平面中旋转,挤出开口通向所述刀头部。
优选地提出,供应管路和传送管路是柔性的。
用来产生该密封的装置可以呈折板或阀的形式,或者可以形成为使得顶板沿绕过位置的方向延伸,并且传送器外壳可以是沿顶板可移位的,使得形成滑动密封。
本发明也优选地提出,传送管路与离心旋风分离器连通。
离心旋风分离器可以在分离侧上具有产物锁,使得分离的挤出产物可以以气体紧密的方式被传递出。
离心旋风分离器优选地在分离侧上连接到通过过热蒸汽工作的干燥机,使得分离的挤出产物可以被引入干燥机而没有与周围空气的任何接触。
方便的是,供应管路和传送管路、离心旋风分离器以及与其串联地布置的送风机形成封闭的传送回路。热交换器可以另外布置在传送回路中。
此外,可以设置成使得蒸汽供应管路通入传送回路以便能够引入过热蒸汽。
此外,可以设置成使得分支管路从传送回路通出。分支管路在流动方向上可以设置在热交换器的上游,或者选择性地,它可以在沿流动方向上设置在热交换器的下游。
可能有利的是,蒸汽膨胀容器布置在传送回路中。
可任选地通过过热蒸汽或通过空气的操作通过以下事实成为可能:在当沿流动方向看时,在挤出机的上游的第一位置中,传送回路具有用来将供应管路选择性地连接到空气递送管路的第一连接点,并且在当沿所述流动方向看时,在挤出机的下游的第二位置中,具有用来将传送管路(或吸入管路)选择性地连接到空气抽取管路的第二连接点。
附图说明
现在将参考附图通过描述工作实施例更详细地说明本发明,其中:
图1示出根据本发明的挤出和调节设备的示意侧视图;
图2示出传送位置中的挤出机的区域中的根据图1的设备的一部分;
图3示出对应于图2的视图中的绕过位置;并且
图4和5示出对应于图2和3的透视图。
具体实施方式
图1示出根据本发明的挤出和调节设备的结构的示意侧视图。具有挤出机外壳4(挤出机螺杆布置在其中)的挤出机2具有带挤出机开口8的顶板6,挤出的产物通过该挤出机开口出现。顶板6与传送器外壳10齐平地终止,切割装置12布置在该传送器外壳中。切割装置12的驱动装置14,诸如齿轮式马达,布置在传送器外壳10的外侧上。
顶板6与挤出机2的轴向15成横向地延伸,并且传送器外壳10在维持传送器外壳和顶板之间的密封的同时可以在沿顶板6的横向上移位,并且因此可以在传送位置(图2、4)和绕过位置(图3、5)之间运动。在两个位置中并且也在它们之间,传送器外壳10在每一种情况下形成与顶板6的紧密密封。
在传送器外壳10的排出侧上,在示出的例子中的顶部上,存在以柔性管或软管的形式的气动传送管路16,该气动传送管路通向离心旋风分离器18。离心旋风分离器18具有产物锁20,通过该产物锁,已经从挤出机气动地传送到那里的要被排出的分离的产物可以以气体紧密的方式从旋风器被移除,并且在那里它落在传送带22上。
在吸入侧上,离心旋风分离器18通过吸入管路24连接到送风机26,送风机之后是热交换器30和蒸汽膨胀容器32。
第一分支管路34布置在送风机26和热交换器30之间,并且第二分支管路38布置在热交换器30的下游。
以柔性管或软管的形式的气动供应管路40将蒸汽膨胀容器32连接到传送器外壳10。
传送器外壳10与离心旋风分离器18的供应管路和传送管路40、16以及与其串联地布置的送风机26以这种方式形成封闭的传送回路,在示出的实施例中,热交换器30和蒸汽膨胀容器32也另外位于该传送回路中。此外,适当的是,蒸汽供应管路在合适的部位通向传送回路,以便能够将饱和的或过热的蒸汽供给到传送回路中。蒸汽膨胀容器用于补偿和缓冲传送回路内的蒸汽的量或蒸汽压力波动(例如,因为挤出产物的湿气引入,通过热交换器的热引入,或通过分支管路的蒸汽的撤回)。
在图1中示出的布置中,该设备被设计成利用过热蒸汽操作,其中传送器外壳、所有管路和离心旋风分离器填充有过热蒸汽,大体上或完全没有任何空气或氧气含量,例如具有少于10%、少于3%或少于0.1%的氧气。通过这种操作模式,送风机26在传送回路中产生具有足够速度的流动以从传送器外壳10排出挤出机产生的并且被切割装置切成块的产物并且通过气动传送管路16将该产物递送到离心旋风分离器18,在那里它与过热蒸汽的流分离并且通过产物锁20排出。
与借助空气流的已知传送方法相比,这种操作模式的优点存在于以下事实:在挤出过程期间直接释放的蒸汽和在另外的运输过程中从产物逐渐出现的湿气被过热蒸汽吸收,该过热蒸汽处于超过100℃的温度,诸如140℃到150℃。由于不存在与空气的混合,通过使例如在传送回路中循环的蒸汽流的一部分改变方向并且冷凝它,可以以简单的方式回收从产物出现的蒸汽中包含的能量,或者以一些其它方式热回收它。已经改变方向的过热蒸汽的部分流束可以例如被压缩并且以这种方式升高到较高的能量水平并且用于特定用途,诸如在吸收冷却的情况下。
由于在传送回路内没有空气是有利的,因此传送器外壳10在顶板6上的可移位布置是方便的,因为它使得传送位置和绕过位置之间的转换成为可能而不必中断蒸汽的循环流动并且空气不进入传送回路或蒸汽不从传送回路逃逸。
为了保证空气最终不因为一些轻微的局部泄露而渗透,可以设置成,在操作中在传送回路中维持轻微的过压,诸如超过周围压力10、20、50、100或者甚至200毫巴。
借助过热蒸汽操作的另外优点存在于以下事实:当产物从挤出机出现时不出现处于产物的温度的不需要的液滴(如果它进入空气气氛,将容易出现这种情况)。
为了改善该设备的灵活性,在传送回路中的第一位置中,存在用来选择性地提供到空气递送管路的连接的第一连接点50,并且在第二位置中,存在用来选择性地提供到空气抽取管路的连接的第二连接点52。在这些位置中,传送回路可以是分开的,并且在传送器外壳10的上游的第一位置中,空气递送管路可以连接到供应管路40,并且在离心旋风分离器下游的第二位置中,空气抽取管路可以连接到传送管路16或吸入管路24,使得空气流替代过热蒸汽流用于传送挤出的产物,这对于某些应用来说可能是适当的。
即使在示出的实施例中,供应管路40从下方竖直通入传送器外壳,并且传送管路16向上竖直通出,使得挤出的产物逆着重力的方向被运输出,但供应管路和传送管路的方向的布置由设计者随意决定。例如,可以设置成供应管路和传送管路水平地连接到传送器外壳,或者选择示出的实施例的相反情况,并且供应管路来自上方且传送管路向下延伸。除了流动的运输介质(空气、过热蒸汽或两者的混合物)的加速效果外,后者具有的优点是,可以直接利用重力以便将挤出的产物加速到希望的传送速度。
附图标记清单
2挤出机
4挤出机外壳
6顶板
8挤出机开口
10传送器外壳
12切割装置
14驱动马达
15挤出机轴线
16气动传送管路
18离心旋风分离器
20产物锁
22传送带
24吸入管路
26送风机
30热交换器
32蒸汽膨胀容器
34第一分支管路
38第二分支管路
40气动供应管路
50第一连接点
52第二连接点

Claims (15)

1.一种挤出和调节设备,所述挤出和调节设备具有挤出机(2),在传送位置中,所述挤出机通入传送器外壳(10),所述传送器外壳以密封的方式连接到气动供应管路(40)并且连接到气动传送管路(16),被挤出的材料经由所述传送管路(16)能够从所述传送器外壳气动地尤其是借助过热蒸汽被移除,其特征在于,所述挤出机(2)能够从所述传送位置移动到绕过位置中,在所述绕过位置中,所述挤出机(2)通向所述传送器外壳(19)的外部,所述传送器外壳具有用来产生密封的装置,当所述挤出机(2)处于所述传送位置和绕过位置时,所述用来产生密封的装置用于使所述供应管路和传送管路(40,16)以及所述传送器外壳(10)相对于环境密封。
2.如权利要求1所述的设备,其特征在于,在所述传送器外壳(10)中设有切割装置(12),所述切割装置在所述传送器外壳(10)的传送位置中与所述挤出机(2)的挤出开口(8)协作。
3.如权利要求2所述的设备,其特征在于,所述切割装置(12)具有刀头部(13),所述刀头部在所述挤出机(2)的顶板(6)的平面中旋转,所述挤出开口(8)通向所述刀头部。
4.如前述权利要求中的任一项权利要求所述的设备,其特征在于,所述用来产生密封的装置形成为使得所述挤出机(2)的顶板(6)沿所述绕过位置的方向延伸,并且所述传送器外壳(10)能够沿所述顶板(6)移位。
5.如前述权利要求中的任一项权利要求所述的设备,其特征在于,所述排出管路(16)与离心旋风分离器(18)连通。
6.如权利要求5所述的设备,其特征在于,所述离心旋风分离器(18)在分离侧上具有产物锁(20)。
7.如权利要求5或6所述的设备,其特征在于,所述离心旋风分离器(18)在所述分离侧上连接到利用过热蒸汽工作的干燥机。
8.如前述权利要求中的任一项权利要求所述的设备,其特征在于,所述供应管路和传送管路(40,16)、一离心旋风分离器(18)以及与所述离心旋风分离器串联地布置的送风机(26)形成封闭的传送回路。
9.如权利要求8所述的设备,其特征在于,在所述传送回路中设有热交换器(30)。
10.如权利要求8或9所述的设备,其特征在于,一蒸汽供应管路通入所述传送回路。
11.如权利要求8到10中的任一项权利要求所述的设备,其特征在于,从所述传送回路引出一分支管路(34,38)。
12.如权利要求11所述的设备,其特征在于,所述分支管路(34)在流动方向上布置在所述热交换器(30)的上游。
13.如权利要求11所述的设备,其特征在于,所述分支管路(38)在流动方向上布置在所述热交换器(30)的下游。
14.如权利要求8到13中的任一项权利要求所述的设备,其特征在于,在所述传送回路中设有蒸汽膨胀容器(32)。
15.如权利要求8到14中的任一项权利要求所述的设备,其特征在于,在当沿所述流动方向看时,在所述挤出机(2)的上游的第一位置中,所述传送回路具有用来将所述气动供应管路(40)选择性地连接到空气递送管路的第一连接点(50),并且在当沿所述流动方向看时,在所述挤出机(2)的下游的第二位置中,具有用来将所述气动传送管路(16)选择性地连接到空气抽取管路的第二连接点(50)。
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