CN102549408B - 处理分析单元 - Google Patents
处理分析单元 Download PDFInfo
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Abstract
本发明涉及一种用于确定水中被分析物且包括基部模块(14)和可调换的筒部模块(12)的处理分析单元(10)。所述基部模块(14)不具有流体学系统,并且具体地具有无流体学测量部(60)的分析物传感器(20)和泵驱动器(16,16′)。所述筒部模块(12)包括整个流体学系统,并且具体地具有:流体存贮罐(40,41)、从所述存贮罐(40,41)泵出流体的非驱动的泵拟态(36,36′)、以及所述分析物传感器(20)的流体学测量部(60)。在所述筒部模块(12)用于所述基部模块(14)中的情况下,所述泵拟态(36,36′)受所述驱动器(16,16′)驱动,并且所述流体学测量部(60)功能性地连接到所述分析物传感器(20)。
Description
技术领域
本发明涉及一种如用于例如呈浸没探头、管内置探头形式或实验室分析装置的水分析领域中的处理分析单元。
背景技术
处理分析单元执行准连续的分析以定量地确定水中被分析物,并且为此目的而包括一个或多个存贮罐以存放液体,例如水、标准溶液和/或在执行水分析中所需的试剂的载体。在该分析单元中提供泵和液体导管以输送所述液体。
当存贮罐中所供给的液体耗尽时,必须重新填充相应的存贮罐。此外,在实际操作中,特别是泵的载液部件中或液体导管中的结晶和堆积物常引起故障。另外,为了定期重新填充或更换该存贮罐,这些故障以及磨损部件的正常磨损例如软管泵的软管,引致必要的维护工作和修理例如泵的维护和清洁、软管的更换等。
发明内容
鉴于此,本发明的目的是提供一种具有高工作可靠性而只需低维护工作的处理分析单元。
根据本发明,此目的利用具有权利要求1的特征的处理分析单元而实现。
本发明的处理分析单元具有模块化的结构并且由永久使用的基部模块和可调换的(exchangable)筒部模块构成。
所述基部模块包括泵驱动器电机和无载液测量部的分析物传感器。该基部模块不包括流体学系统部件,即没有载液的导管、阀、测量部或泵机构。
与之成对比地,所述筒部模块包括:至少一个液体存贮罐、用于从所述存贮罐泵给液体的无驱动的泵机构、和用于所述分析物传感器的测量部。所述整个流体学系统因此配置在所述筒部模块中。术语泵机构是指流体学输送机构,即在所述流体学系统内与所述液体直接接触并且起输送作用的泵部件。
借助于将筒部模块插放在所述基部模块中,所述泵机构经由耦合元件受泵驱动器驱动,并且载液测量部在功能上关联到分析物传感器使得后者能对容纳在所述液体中的被分析物进行测量。
当存贮罐中的液体耗尽时,例如载液或试剂耗尽,带有整个流体学系统的所述筒部模块被调换。因此,整个流体学系统的更换与消耗量成函数关系地或定期地进行。所述分析单元的流体学系统的独立维护或与磨损相关的修理不再是必要的。这使得维护工作相当大地减少。因为所述整个流体学系统的基于消耗量的或定期的调换,所以流体学系统中的堆积物或流体学系统部件例如泵软管的磨损所引起的故障被减至最小。
优选地,所述泵机构设计为蠕动泵,并且特别优选地设计为气动式蠕动隔膜泵。蠕动泵机构具有非常简单的结构,并且可以例如由借助耦合元件沿纵方向持续变形的液体导管的挠性部形成。
所述耦合元件可构造为例如沿纵方向配置成一个在另一之后的三个压挤活塞,所述活塞沿纵方向且以液密方式连续压挤所述液体导管,由此它们致使蠕动泵运动。气动式蠕动泵是特别优选的实施例,其中,机械耦合通过对多级隔膜泵施加过压或真空而实现。所述泵驱动器因此可优选地具有电动机械式或气动式设计。
液体导管中包含空气对于蠕动泵机构不是问题,因为它能够进行对抗空气的抽吸。此外,使用蠕动泵机构可省略阀,特别是容易故障的止回阀。蠕动泵机构还可提供同时泵给多个导管的可能性,即仅利用单个蠕动泵机构同时泵给多种液体。所述蠕动泵机构是经证明的、经济的且极可靠的泵技术。
在优选实施例中,所述基部模块包括与所述筒部模块中的多个独立的泵机构相关联的多个独立的泵驱动器。基本上,多个泵机构可由单个泵驱动器驱动。然而,优选是,将所述基部模块中的专用泵驱动器关联到所述筒部模块中的各泵机构。以此方式,多种液体可独立受控地流动。
优选地,所述筒部模块包括多个存贮罐。在此实例中,存贮罐是用于试剂、载液、标准溶液、清洁液体或甚至用于废液的罐。以此方式,特别是对于带透析式采样的分析单元可确保,当两个筒部模块被调换时液体不会逸出所述分析单元。
在优选实施例中,所述分析物传感器包括在基部模块侧的用于光度确定样本中被分析物的带光学检测器的光度计。该光学检测器,或光度计,确定在该流体学系统的测量部所容纳的样本中的被分析物的吸收性、发光性或荧光性。
所述样本可从水中采取,例如所述分析单元周围的废水例如以透析方式采取。为此目的,所述筒部模块的优选实施例包括透析隔膜。在透析采样中,待分析的水不进入分析单元,而是仅分子和离子从所述水中迁移到在透析隔膜之外的载液中。因此,所述分析单元内的液体体积在两个筒部模块进行调换的整个操作期间内大致不变。因此废液可被收集到所述分析单元中并且将不再进入周围的水中。
因此,特别优选地,将此分析单元设计为操作时直接浸没在待分析的水中例如水处理工厂的废水池中的液密型废水浸没探头。
所述筒部模块优选包括塑料板,所述塑料板包括泵机构的泵室和用于将所述存贮罐、泵机构和测量部进行连接的槽状流体学通道。在所述塑料板上,在泵室区域中设置挠性的且液密型泵隔膜,并且在用于关闭所述通道的通道区域中设置刚性盖。
优选地,整个流体学系统具有微流体学设计,使得最大的通道截面优选为10mm2,更优选地至多为5.0mm2。只有微流体学设计的流体学系统容许在经济性方面提供一种能与存贮罐中的液体作用持续足够长一段时间的分析单元。
附图说明
以下是本发明参考附图的详细描述。
在附图中:
图1是呈浸没探头形式的分析单元的第一实施例的示意图,
图2示出基部侧气动泵驱动器和与之协作的筒部侧泵机构的第一实施例,和
图3示出基部侧电动-机械式泵驱动器和与之协作的筒部侧泵机构的第二实施例,
图4是处理分析单元的第二实施例的示意图,
图5是分析单元的另外一个实施例的纵向截面,和
图6是图5的分析单元的筒部模块上的顶平面视图。
具体实施方式
图1示意地示出设计为浸没探头、且为了益于控制净化处理而用于水分析11的处理分析单元10。分析单元10具有两部分的模块化结构,并且由液密型基部模块14和可调换的液密型筒部模块12形成。基部模块14包括筒部模块12将被插放或设定所至的壳体15。
基部模块14包括呈光度计形式的分析物传感器20,而无设置在筒部模块12中的流体学测量部60。在该基部模块侧,分析物传感器20包括呈光电二极管形式的光学检测器64和光源63。
如图2所示,第一实施例的泵可以具有气动式设计,其中,泵驱动器16′是对与筒部模块12的对应空气通道81相结合的三条空气通道80连续地施加过压或者也可能是真空的空气泵。该筒部模块的空气通道81由泵隔膜84关闭,在所述泵隔膜84下方形成三个泵室82。
如果泵驱动器16′将过压施加到空气通道80,则泵隔膜84扩张到它下方的泵室82中并且使容纳在其中的液体移位。如果施加真空,则泵隔膜84平坦地接触空气侧的表面,并且泵室82被填充液体。通过以三个连续的泵室82的对应的顺序交替地施加过压和真空,从而引起液体经过全部三个泵室82和在流体学系统下游中的蠕动运动。
泵驱动器16′设置有将过压或真空传送到相应的空气通道80中的三个阀(未示出)。图中未示出的所述阀由此表示加压空气泵与泵机构36′之间的耦合。
作为泵驱动器的替代,基部模块14包括具有图3所示耦合元件19的驱动电机16,17。耦合元件19由适用于在设计为挠性导管部的泵机构36中引起蠕动运动的三个蠕动式压挤活塞66形成。
为了控制分析单元10,基部模块14还包括控制器62。
筒部模块12包括容纳载液、试剂和废液的三个存贮罐40,41,42。载液罐40和试剂罐41各自经由液体导管连接到它们自己的蠕动泵机构36,37,所述泵机构容许以精细的剂量泵给所述载液或试剂。第三存贮罐42是用于废液的罐,所述废液从分析器20流入该罐中。
第二实施例的蠕动泵机构36,37,与关联的耦合元件19一起,设计成使得不会发生非期望的载液或试剂的回流或漏流。在筒部模块侧,蠕动泵机构36,37大致由相关联的驱动电机16,17的相应耦合元件19所驱动的相应液体导管的挠性部形成。第二实施例的流体学泵72,73因此由驱动电机16、耦合元件19和泵机构36形成。
此外,筒部模块12包括离子选择性(ion-selective)透析隔膜26,被分析物分子和离子可经过所述离子选择性透析隔膜26而从水11中迁移到在内部流过的所述载液中,同时阻止大分子颗粒和微生物穿过所述隔膜。因此富有被分析物分子和离子的所述载液形成所谓的样本。透析隔膜26优选具有小于2μm的细孔尺寸。
最后,筒部模块12包括所述流体学系统的测量部60,所述测量部60由用于分析物传感器20以执行光度度量的、纵向端部具有透明的可透光的窗口的直导管部70形成。
当筒部模块12安装到基部模块14时,测量部60正好与分析物传感器20的基部模块侧的部件对齐。此外,泵72,73的耦合元件19与筒部模块侧的泵机构36呈蠕动式接合。
在分析模式中,关联的泵72从载液存贮罐40将载液泵给到透析隔膜26,被分析物离子或分子经由所述透析隔膜26而从水11中迁移到所述载液中。此后,关联的泵73从试剂存贮罐41将试剂加到富有被分析物离子的所述载液即所谓的样本中,由此使所述载液中所关注的被分析物具有对应于它的浓度的颜色。已上色的样本被泵给到测量部60,在该处由分析物传感器20进行光度分析,由此可确定所谓的样本中的被分析物的浓度,这进而能够得出关于该分析单元周围水中的被分析物的浓度的结论。此后,所述样本被泵给到废液存贮罐42中。
当对应的存贮罐40,41中的试剂或载液耗尽时、当废液存贮罐42即将溢流时、或当可能因筒部模块12的部件而引起故障时,就将筒部模块12进行调换。这样做时,锁止器(未示出)被解锁,并且筒部模块12沿轴向向下方向被拉离基部模块壳体15。这时,泵耦合元件19与泵机构36分离,并且测量部60被移离分析物传感器20。随后,新的筒部模块12可设定到壳体15,同时泵耦合元件19又连接到泵机构36并且测量部60插入分析器20中。
图4是用于连续的或准连续的定量光度确定水中被分析物例如磷酸盐、铵或硝酸盐的处理分析单元110的第二实施例的示意图。分析单元110是静态分析单元110并且安装成浸没在待分析的水111中,即它构造为所谓的浸没探头。分析单元110包括:从管道113刚性悬置在水111即待分析液体中或正上方的基部模块112,以及可移除地紧固到所述基部模块112且浸没在水111中的可调换的筒部模块114。
分析单元110的整个流体学系统设置在筒部模块114中。筒部模块114包括容纳载液124的载液存贮罐126,所述载液存贮罐126经由导管连接到采样装置116,所述装置在本实例中是透析装置116。透析装置116包括作为将透析室152与水111分隔的隔膜118的透析隔膜118,在透析期间所述载液驻留在所述透析室152中。透析室152可由蜿蜒的槽形成,例如所述槽开口由透析隔膜118关闭。第一泵机构122设置在透析装置116后方,所述第一泵机构122将样本120或来自透析装置116的透析液泵给到除气(degassing)装置140。
筒部模块114具有容纳液体试剂130的试剂存贮罐134,所述液体试剂130由第二泵机构128泵给到除气装置140。此外,筒部模块114按需设置有容纳标准溶液158的标准溶液存贮罐156、设置在沿流动方向看的标准溶液存贮罐156下游的第三泵机构154,所述第三泵机构154将标准溶液泵给到除气装置140。
三个泵机构122,128,154以星形方式正好会聚在除气装置140之前,如由图6特别好地可见。除气装置140由覆盖有可透气的且液密型除气隔膜144的槽状除气通道148形成,所述除气隔膜144是疏水型聚四氟乙烯隔膜。除气通道148以蜿蜒的方式延伸,使得在小区域中实现相对长的除气通道148。在除气隔膜144的对立于除气通道148的一侧,配置所述除气装置的气体侧146,所述气体侧146的抽空经由基部模块侧的除气阀170而得以控制。
样本从除气装置140流动到光度计测量部132,然后从该处进入收集废液162的废液罐160中。光度计测量部132在功能上关联到基部模块侧的光度分析物传感器150,所述光度分析物传感器150具有光源164和光学检测器166,在该两者之间沿纵方向配置透析液导管的一段,该段形成光度计测量部。在此实例中,分析物传感器150设计为透射光度计。另一种方案,所述光度计或者也可设计为反射光度计150′,如图5的实施例中所示。
用于驱动三个泵机构122,154,128的压力源是在基部模块112中的过压蓄积器172和真空蓄积器176。三个泵机构122,154,128设计为气动式蠕动泵。关联到各泵机构122,154,128的相应的阀组,各由三个转换阀186形成。各泵机构121,154,128分别包括具有相应的由橡胶或弹性塑料材料制成的弹性泵隔膜182的三个泵室180。
各泵隔膜182的后侧经由筒部模块侧的气动控制导管184、控制导管耦合件187、以及基部模块侧的气动控制导管185而连接到转换阀186,所述转换阀将泵隔膜182选择性地连接到过压蓄积器172或真空蓄积器176。以此方式,将过压或真空这两者的任一者施加到泵隔膜182的后侧,使得泵室180被填充或排空。通过连续地填充和排空泵室122,154,128,从而引起蠕动式泵给运动。
为了实现产生真空蓄积器176中的真空和过压蓄积器172中的过压的目的,在基部模块112中设置气动泵142,所述气动泵142的泵入口连接到真空蓄积器176并且所述泵的泵出口连接到过压蓄积器172。气动泵142由电动的气动泵电机143持续驱动。真空蓄积器176中的真空和过压蓄积器172中的过压分别由各自连接到大气压的对应的真空阀180或过压阀174限制。作为替代,压力传感器可设置在蓄积器172,176中,所述气动泵借助于此从而当压力下降到限制压力以下或超过限制压力时被启动或停用。
基本上由阀185、压力蓄积器172,176、气动泵142和电机143所形成的所述整个气动系统,构成用于泵机构122,154,128的相应的独立的泵驱动器178。
控制除气装置140中的真空的除气阀170连接到真空蓄积器176。
所有的阀186,170和光度计150由中央控制器168控制。所有的电子部件配置在基部模块112中。
图5和图6分别示出筒部模块114或分析单元的第二实施例。与图4中仅示意性示出的实施例不同的是三个泵机构122′的具体设计,所述三个泵机构122′的相应的最后的泵室180′由单个共用泵室180′形成。图5的实施例的另外一个差异是作为反射光度计的分析物传感器150′的设计。
如图5和图6中清楚可见,筒部模块114大致由包括流体学系统导管、泵室180,180′、透析模块116、除气装置140以及测量部132′的板状塑性部件190和设定在该板状塑性部件190上的罐126,134,156,162而形成。
Claims (7)
1.一种用于确定水中被分析物的处理分析单元,包括:基部模块和可调换的筒部模块,其中
所述基部模块不包括液体流体学系统,所述基部模块包括无流体学测量部的分析物传感器和泵驱动器,并且
所述筒部模块包括整个液体流体学系统,所述筒部模块包括:液体存贮罐、采样装置、从所述液体存贮罐泵给液体的无驱动的泵机构、以及用于所述分析物传感器的流体学测量部,
其中,当所述筒部模块在所述基部模块中被布置在位时,所述泵机构连接到所述泵驱动器且由所述泵驱动器驱动,并且所述流体学测量部连接到所述分析物传感器,
所述泵机构配置为蠕动隔膜泵并且以气动方式驱动,
所述隔膜泵的泵室由挠性的液密型泵隔膜覆盖,
所述基部模块包括与所述筒部模块中的多个相互独立的泵机构相关联的多个相互独立的泵驱动器,以及
所述筒部模块包括具有用于将所述液体存贮罐、泵机构和测量部进行连接的槽状微流体学通道的塑料板,所述通道的截面小于5mm2。
2.如权利要求1所述的处理分析单元,其中,所述筒部模块包括多个液体存贮罐。
3.如权利要求1所述的处理分析单元,其中,所述分析物传感器包括容许光学确定所述流体学测量部中的被分析物的光学检测器。
4.如权利要求3所述的处理分析单元,其中,所述光学检测器确定样本的吸收性、发光性或荧光性。
5.如前述权利要求的任一项所述的处理分析单元,其中,所述筒部模块包括用于获得样本的透析隔膜。
6.如权利要求1-4的任一项所述的处理分析单元,其中,所述分析单元设计为浸没探头。
7.如权利要求1-4的任一项所述的处理分析单元,其中,所述筒部模块以液密方式封装,使得容纳在其中的液体不会向外逸出。
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2010
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- 2010-03-31 BR BR112012004162A patent/BR112012004162A2/pt not_active Application Discontinuation
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- 2010-04-01 WO PCT/EP2010/054402 patent/WO2011023421A1/de active Application Filing
- 2010-04-01 US US13/392,097 patent/US20120195799A1/en not_active Abandoned
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- 2010-04-01 CA CA2770434A patent/CA2770434A1/en not_active Abandoned
- 2010-04-01 CN CN2010800482019A patent/CN102597749A/zh active Pending
- 2010-04-01 BR BR112012003972A patent/BR112012003972A2/pt not_active IP Right Cessation
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- 2010-07-28 CA CA2771923A patent/CA2771923A1/en not_active Abandoned
- 2010-07-28 US US13/392,098 patent/US8881580B2/en active Active
- 2010-07-28 CN CN201080037889.0A patent/CN102549408B/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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WO2011035959A1 (de) | 2011-03-31 |
CA2771923A1 (en) | 2011-03-31 |
CA2770238A1 (en) | 2011-03-03 |
BR112012003972A2 (pt) | 2019-09-24 |
CN102597749A (zh) | 2012-07-18 |
US8881580B2 (en) | 2014-11-11 |
CA2770434A1 (en) | 2011-03-03 |
US20120198921A1 (en) | 2012-08-09 |
CN102597748B (zh) | 2016-01-13 |
EP2290354B1 (de) | 2019-07-24 |
EP2470889A1 (de) | 2012-07-04 |
EP2470888A1 (de) | 2012-07-04 |
EP3572801A1 (de) | 2019-11-27 |
WO2011023421A1 (de) | 2011-03-03 |
WO2011023420A1 (de) | 2011-03-03 |
BR112012004162A2 (pt) | 2016-03-29 |
US20120167673A1 (en) | 2012-07-05 |
EP2470883B1 (de) | 2019-01-02 |
CN102597748A (zh) | 2012-07-18 |
US20120195799A1 (en) | 2012-08-02 |
EP2470888B1 (de) | 2018-10-10 |
EP2470883A1 (de) | 2012-07-04 |
EP2290354A1 (de) | 2011-03-02 |
CN102549408A (zh) | 2012-07-04 |
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