CN1662762B - 一种伽玛稳定的高压旋阀 - Google Patents

一种伽玛稳定的高压旋阀 Download PDF

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CN1662762B
CN1662762B CN038150468A CN03815046A CN1662762B CN 1662762 B CN1662762 B CN 1662762B CN 038150468 A CN038150468 A CN 038150468A CN 03815046 A CN03815046 A CN 03815046A CN 1662762 B CN1662762 B CN 1662762B
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stopcock
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CN1662762A (zh
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T·J·麦克皮克
J·K·穆恩
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ACIST Medical Systems Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22Valves or arrangement of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/065Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/02Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
    • F16K5/025Particular coverings or materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/045Particular coverings and materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0657Particular coverings or materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22Valves or arrangement of valves
    • A61M39/223Multiway valves
    • 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/0318Processes
    • Y10T137/0402Cleaning, repairing, or assembling
    • Y10T137/0491Valve or valve element assembling, disassembling, or replacing
    • Y10T137/0519Plug valve

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
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  • Taps Or Cocks (AREA)
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Abstract

提出一种用于医学上的旋阀(10),该旋阀设置成可承受高压和伽玛射线。该旋阀(10)一般包括壳体(12)和阀件(14)。阀件(14)保持在壳体(12)中,当承受比较高的压力时,阀件(14)不与壳体(12)分开。把持件(16)连接到阀件(14),允许阀件(14)从开口位置转动到闭合位置。在一些优选实施例中,把持件(16)进行连接时将阀件(14)锁定到壳体(12)。所有的部件用可耐受伽玛射线的材料制造,使旋阀(10)在包装状态下可以用伽玛射线进行消毒。

Description

一种伽玛稳定的高压旋阀
技术领域
本发明的装置涉及一种能够耐受伽玛射线的旋阀。该旋阀设计用于高压场合。
背景技术
伽玛射线是一种有很强穿透性的能量。伽玛照射是利用伽玛射线对医疗设备进行消毒。伽玛射线用很少的热量杀死产品和其包装上的微生物。作为消毒方式,伽玛射线非常全面彻底,产品及其部件或包装的任何区域在消毒后都不会留有不确定的无菌区。此外,伽玛射线不会留有任何残余。
传统的消毒技术包括使用乙撑氧(EtO)进行批量消毒。EtO消毒会留有残余物,在发送之前要求有曝气时间。包装必须允许气体渗透,以便在使用前让EtO完全挥发。但气体可渗透的包装物增加了随时间过去受到污染的可能性。因此,使得经过消毒的装置的产品有效期较短。在另一方面,伽玛射线则可全面彻底穿透包装,而且没有残留物。
市场上可买到的旋阀用暴露于伽玛射线时尺寸不稳定的材料制成。与市场可买到的旋阀的阀件的较软材料相比,伽玛稳定材料的价格更高和有更高刚性。图1显示了典型的市场可买到的旋阀1的截面图。旋阀1包括插入壳体5的阀件3。阀件3可以是中空的,如图所示,或是实心的,其包括与壳体5的通道9对准的端口7。
两件式结构的旋阀1依靠阀件3和壳体5之间的干涉配合。换句话,阀件3比壳体5的内部稍长。当阀件3插入壳体5时,受到压缩并形成流体密封配合。因此,阀件3必须用比壳体5材料软的塑料制造。用于制造阀件3的材料一般包括乙缩醛和丙烯腈-丁二烯-苯乙烯(ABS)。
不理想的是,这些用于制造阀件3的软材料不能耐受伽玛射线。当暴露于伽玛射线时,阀件3的尺寸改变使得旋阀不能使用。因此,必须使用不那么有效但价格更高的消毒方式。
这种旋阀1的其他缺点涉及较软的阀件3和壳体5之间的卡接设计。如图1所示,卡接的实现是通过在阀件3的下端设置带斜面的凸缘11,该凸缘设置成可与对应的与壳体5整体形成的向内凸出的凸缘13配合。为实现安装和流体密封配合,凸缘11和13必须比较小,使得阀件3的凸缘11在进行安装通过另外的凸缘13时变形和矫正。两个凸缘11和13之间的尺寸关系限制了这些旋阀1用于高压场合。当经受高压时,存在阀件3从壳体5排挤出的倾向。
这些旋阀1的另一缺点是,其要求很大的转动力来打开和关闭阀门。因为流体密封的完整性取决于阀件3和壳体5之间的摩擦配合,因此,阀件3稍微大于壳体5,因此难于转动壳体5内的阀件3。使用者抱怨要用两只手来操作旋阀1才能使得连接到旋阀的管件不扭曲或移位。此外,旋阀1的较小尺寸使得不用手指保持阀件3的把持件就难以把握壳体5来转动阀件3。
当佩带湿的橡皮手套来转动高压旋阀的阀件3时,这个问题非常突出。
此外,像乙缩醛和ABS这样的材料是不透明的,这是另外的缺点。为了进行血液和气泡检测,最好使用由完全透明的部件组成的流体管路。
因此,需要一种旋阀,其可耐受伽玛射线。
还需要一种旋阀,其设置成可承受高压。
还需要一种旋阀,其相对容易地打开和关闭。
另外还需要一种旋阀,其完全由透明材料制成。
发明内容
本发明涉及一种全部用能够耐受伽玛射线消毒的材料制成的旋阀。公开了一种制造旋阀的方法,可围绕阀件的外面形成旋阀壳体,从而提供了一种阀件和壳体之间改进的配合。
具体来说,本发明提出了一种旋阀,可承受伽玛射线,包括:由伽玛稳定材料制成的壳体,形成入口端口、至少一个出口端口和内部空腔,所述内部空腔具有内直径和在两端的开口;由伽玛稳定材料制成的阀件,可转动地容纳在所述内部空腔中,形成与所述端口对准的通道,并具有基本上等于所述内直径的外直径和在所述阀件的第二端处沿径向延伸的止动件,使得所述止动件不能通过所述内腔;和把持件,连接到所述阀件的相对于第二端的第一端,构造并设置成允许所述阀件的转动,并防止所述阀件与所述壳体分开。
内部阀件是用刚性材料制成,比如聚醚醚酮(PEEK),能够耐受伽玛射线,形状不会发生变化。外部壳体也是用这类材料制成,一般是用聚碳酸酯。壳体包括圆柱形内腔,其内径近似等于阀件的外径。阀件设有止动件,最好是凸缘,从一端沿径向延伸,以防止阀件完全通过壳体。阀件通过连接把持件固定到另一端。连接可通过粘接、卡接、摩擦配合、焊接(即超声波焊接)、销连接、或类似方式进行。
聚醚醚酮只是制造本发明的旋阀的许多可接受的材料中的一种。其他示例性材料包括聚酯、聚对苯二甲酸乙二醇酯(PETG)、聚碳酸酯、聚碳酸酯合金、聚砜、聚氨酯、聚醚酮酮(PEKK)、聚醚酰亚胺、热固性塑料、聚酰胺、聚芳醚酮(PAEK)、以及除聚四氟乙烯(PTFE)、氟化乙烯-丙烯(FEP)共聚物以外的氟塑料。所述可应用的热固性材料的示例包括包括聚酰亚胺、聚亚安酯和聚酯。
把持件、阀件和壳体都可以用相同的材料制成。但是壳体和阀件使用的材料具有的熔点稍有不同可提供具有优越性的制造选择。如果壳体使用的材料其熔点比阀件的稍低,壳体可通过在阀件上重叠模制来形成。这样可保证壳体的内腔与阀件的尺寸完全配合。熔点温度的差别防止了壳体材料与阀件融合。
或者,重叠模制工艺可使用不保证伽玛稳定的材料,其成为一种使外壳体和内阀件紧密配合的方式。如果内阀件和外壳体使用的材料暴露于伽玛射线下反应不同时,可以使外壳体当照射伽玛射线时围绕内阀件收缩。这个概念不仅可在壳体和阀件之间形成水密封配合,还允许使用较便宜的非伽玛稳定的材料。
此外,考虑到伽玛稳定材料的高价格,可能希望提供一种连接到伽玛稳定的阀件上的非伽玛稳定的把持件。这样做不仅可提供成本优势,特别是在大旋阀的情况下,还提供了设计的灵活性。例如,可提供具有不同颜色变化的把持件。可对颜色进行选择以配合流过旋阀的流体类型。阀件也可以设计成没有把持件,如用自动装置操作旋阀。
此外,为了使转动容易,最好将把手结合到旋阀壳体,其在转动阀件时用来保持壳体,因此可产生更大的转动杠杆力。把手可以是壳体的轴向延伸或沿不会对端口形成干涉的径向延伸。
本发明的一个方面提出了一种旋阀,其具有阀件,阀件可连接到旋阀两侧的把持件,或与其整体形成。
附图说明
图1是现有技术的旋阀;
图2是根据本发明的优选实施例的旋阀的透视图,旋阀带有与阀件分开的把持件和部分剖开的壳体;
图2A是本发明的旋阀的可选实施例的透视截面图,旋阀带有与阀件分开的把持件;
图3是本发明的旋阀壳体的透视图;
图4是本发明的阀件的透视图;
图5是本发明的旋阀的另一优选实施例的剖开视图;
图6是本发明的壳体的第二端的实施例的部分透视图;
图7是本发明的旋阀的另一优选实施例的剖开视图;
图8是本发明的旋阀的优选实施例的透视图;
图9是本发明的旋阀的另一优选实施例的透视图。
具体实施方式
现在参考图2,其显示了本发明的旋阀10。旋阀10一般包括壳体12、阀件14、和把持件16。壳体12、阀件14和把持件16最好全部用暴露于伽玛射线下可保持尺寸稳定的材料制造。
图3清楚显示了壳体12,其包括至少一个入口端口18和至少一个出口端口20。端口18和20通到内部空腔22,其尺寸可容纳阀件14。值得注意的是,壳体12在第一端24和第二端26开口,形成对内部空腔22的限制。这些开口端24和26的重要性在下面讨论。
图4显示了阀件14。阀件14一般包括圆柱体,其尺寸加工成可转动地容纳于内部空腔22。阀件14包括第一端28和第二端30,当安装时,对应于壳体1的第一端和第二端24,26。阀件14的第二端30包括止动件32,其最好具有凸缘的形式。止动件32的尺寸加工成可与壳体12的第二端26的开口冲突。止动件32因此可防止阀件14从壳体12通过第一端24移出。阀件14还包括通道34,当希望端口18和20之间形成流体连通时,通道与壳体12的端口18和20对准。此外,在阀件14的第一端28设有连接区36,用于连接阀件14到把持件16。
图2显示了把持件16,其包括连接区38,设置成可与阀件14的连接区36配合。连接区36和38在图2和图4中显示,分别是方形的凸出和凹进连接件。所述领域的技术人员应当知道许多结构都可实现希望的功能,连接把持件16到阀件14。如果需要,图中显示的凸出和凹进连接件可提供应用粘接剂的适当表面区,还可提供阀件14和把持件16之间足够的结构相互作用,使得把持件16可用于转动阀件14。把持件16还包括接触表面40。当把持件16连接到阀件14时,接触表面40作用于壳体12的第一端24。接触表面40和止动件32共同防止了阀件14相对壳体12沿轴向移动。因此,阀件14沿轴向锁定到壳体12中,但仍可以转动。
图2A显示了可选择的优选结构,用于连接把持件16到阀件14。把持件16包括槽17,设置成可与阀件的延伸部19配合。阀件延伸部19最好与槽17实现卡接锁定配合。当把持件16卡入阀件14时,把持件16的下表面成为接触表面40,与壳体12的第一端24作用,防止阀件14与壳体12脱离。
用于制造壳体12、阀件14、把持件16的材料最好是透明的伽玛稳定的,可在使用伽玛射线照射消毒之前进行安装和包装。取决于所选择的制造阀10的制造方法,如下面所讨论的,用于制造壳体12,阀件14和把持件16的材料可以是相同的或是不同的。例如,为降低成本,把持件可用便宜的非伽玛稳定的材料制造。乙缩醛和ABS提供了两个可接受材料的示例。
可用于制造本发明的旋阀10的伽玛稳定材料包括聚醚醚酮、聚酯、聚对苯二甲酸乙二醇酯(PETG)、聚碳酸酯、聚碳酸酯合金、聚砜、聚氨酯、聚醚酮酮(PEKK)、聚醚酰亚胺、热固性塑料、聚酰胺、聚芳醚酮(PAEK)、以及除聚四氟乙烯、氟化乙烯-丙烯共聚物以外的氟塑料。可接受的热固性材料的示例包括聚酰亚胺、聚亚安酯和聚酯。这些材料以示例的方式提出,不打算提出可接受材料的排他的清单。任何显示出具有足够结构整体性的伽玛稳定材料都是可用的。
一旦材料选择好并用于形成壳体12、阀件14和把持件16,旋阀10通过将阀件14的第一端28放入壳体12的第二端26进行组装。阀件14滑入壳体12的内部空腔22,直到止动件32接触壳体12的第二端26。接下来,通过互相对准各自的连接区36和38,使得把持件16连接到阀件14,使用伽玛稳定的粘接剂、超声波焊接,机械连接或类似方法将其固定到一起。
本发明的另外的实施例提供了旋阀10,其中把持件16和阀件14是整体形成的。图5显示了这种实施例。阀件14在其第二端30形成孔42,在阀件14插入壳体12后,销44插入孔中。可设置止动件(未显示)作用于壳体12的第一端24,如图2所示的止动件40。或者如图5所示,不需设置止动件40,阀件14和内腔22具有稍微的锥形,最好保证在阀件14和壳体12之间形成密封。当销44位于适当位置时,孔42形成稍微向下的作用于阀件14的力。
图6显示了壳体12的实施例,其形状可提高作用于阀件14的向下力。壳体12的第二端26的形状具有凹进区46,提供了适当的间隙,当孔42与凹进区46对准时,设置通过阀件14的孔42的销44。
凹进区46的附近是形成一定角度的斜面48。一旦销44就位,阀件14转动使得销44遇到斜面48形成的高阻力,如同阀件14被拉到内腔22的深处。如果阀件14和内腔22是锥形的,斜面作用将在阀件14的侧壁和形成内腔22的壳体12的内侧壁之间形成更好的密封。如果使用圆柱形阀件14和内腔22,以及如图2所示的止动件40,斜面作用将在止动件42和壳体12的第一端24之间形成更严密的密封。
在倾斜的斜面48的端部是挡壁50。一旦阀件14具有足够的转动,销44将克服斜面48,卡到挡壁50的后面。挡壁50防止了阀件14反向转动,使得销44不会重新进入凹进区46和移出。挡壁50因此形成对阀件14的转动限制。
挡壁50的附近是工作表面52。当阀件14转动时,该表面52相对平行于销44形成的平面。工作表面52最好还包括平面部分53和锁紧部分55。平面部分53设置成可对销44提供很小的向下力,使得阀件14可容易地进行转动。锁紧部分55的位置对应于阀件通道34和壳体端口18和20之间的对准位置。因此,当阀件14与壳体12的端口对准时,阀件14被拉入与壳体12的内壁紧密接触,因此形成高压操作可接受的流体密封。可以设置槽57以便,当阀件14与壳体端口18和20对准时,向操作者提供可感觉到的反馈。阀件14的带角度的工作区的一个尽头由挡壁50形成,如上所讨论的,另一相对的尽头由可转动的止动件54形成。可转动的止动件54防止销44转动到可进入壳体12的相对侧的凹进区46的位置。该凹进区设计用于容纳销44的另一端。
本发明提出一种制造方法,其使用与把持件12整体形成的阀件14,不需要销44。图7显示了旋阀10的实施例,其中的阀件14和壳体12的内部空腔是弯曲的,壳体12的第一端24和第二端26比壳体12的其他部分窄,因此,阀件14锁定在壳体12内部。
为制造图7的旋阀10,阀件14用第一伽玛稳定材料模制。然后将杆(未显示)穿过通道34以保持通道34在其余的制造过程中打开,形成壳体12的入口端口18和出口端口20。然后围绕阀件14和杆用第二伽玛稳定材料浇注壳体12,第二伽玛稳定材料的熔点温度低于第一伽玛稳定材料的熔点温度。使用具有不同熔点温度和不同模制温度的材料可保证阀件14不会溶化和黏附到壳体12上。一种轻介质,如润滑剂,可施加到阀件14上,进一步防止壳体12黏附。例如,聚醚醚酮可用作制造阀件14的第一材料。聚碳酸酯可用作第二材料进行模制壳体12。聚碳酸酯的熔点温度在大约540到570°F,但模制温度较低,大约在150到220°F。
一旦壳体12固化,取出杆后,阀件14可在壳体12中转动。代替绕阀件14浇注壳体12的其他可选方法是浸渍涂布工艺,其中阀件14和杆重复地浸入第二材料的液体体积中,形成壳体12。
图8是本发明的旋阀10的优选实施例。旋阀10显示出是三通旋阀,具有一个入口端口18和两个出口端口20。延伸的凸缘60与端口18和20整体形成。凸缘60可以是与壳体12其余部分不同的材料,但最好是相同的材料。凸缘60增加了壳体12的刚性以适应高压工作条件,还提供了区域62,当转动把持件16时,便于握住旋阀10。握住凸缘60可提高转动力,并防止手指阻碍把持件16移动。
图9是本发明的旋阀10的另一优选实施例,旋阀10显示出是三通旋阀,具有一个入口端口18和两个出口端口20。把手64从壳体12沿一定角度延伸,不会防碍把持件16的转动。转动的各个位置在图中以虚线显示。如同图8所示的凸缘60,使用把手64增强了转动力,并可防止手指防碍把持件16的运动。
前面介绍提出了实现本发明原理的实施例。这些实施例可利用不同的机构进行变化、改进和/或实施。例如,本发明的旋阀已经介绍涉及医学应用。但是,对于所属领域的技术人员,很清楚本发明的内容可应用电子学、微生物或其他要求灭菌的领域。因此,对于所属领域的技术人员,很容易认识到,在不脱离本发明的范围的情况下,对本发明可进行各种改进和变化,不必严格遵守本文介绍和显示的说明性实施例和应用,本发明的范围只由所附权利要求来确定。

Claims (19)

1.一种旋阀,可承受伽玛射线,包括:
由伽玛稳定材料制成的壳体,形成入口端口、至少一个出口端口和内部空腔,所述内部空腔具有内直径和在两端的开口;
由伽玛稳定材料制成的阀件,可转动地容纳在所述内部空腔中,形成与所述端口对准的通道,并具有基本上等于所述内直径的外直径和在所述阀件的第二端处沿径向延伸的止动件,使得所述止动件不能通过所述内腔;和
把持件,连接到所述阀件的相对于第二端的第一端,构造并设置成允许所述阀件的转动,并防止所述阀件与所述壳体分开。
2.根据权利要求1所述的旋阀,其特征在于,所述把持件是焊接连接到所述阀件的。
3.根据权利要求1所述的旋阀,其特征在于,所述旋阀还包括将所述把持件连接到所述阀件的销。
4.根据权利要求2所述的旋阀,其特征在于,所述焊接包括超声波焊接。
5.根据权利要求1所述的旋阀,其特征在于,所述把持件是粘接连接到所述阀件的。
6.根据权利要求1所述的旋阀,其特征在于,所述壳体包括从聚酯、聚碳酸酯、聚砜、聚氨酯、聚醚酮酮、聚醚醚酮、聚芳醚酮、聚醚酰亚胺、聚酰胺、聚酰亚胺中选出的材料。
7.根据权利要求1所述的旋阀,其特征在于,所述把持件包括从乙缩醛和丙烯腈-丁二烯-苯乙烯中选出的材料。
8.根据权利要求1所述的旋阀,其特征在于,所述阀件包括从聚酯、聚碳酸酯、聚砜、聚氨酯、聚醚酮酮、聚醚醚酮、聚芳醚酮、聚醚酰亚胺、聚酰胺、聚酰亚胺中选出的材料。
9.根据权利要求1所述的旋阀,其特征在于,所述把持件包括从聚酯、聚碳酸酯、聚砜、聚氨酯、聚醚酮酮、聚醚醚酮、聚芳醚酮、聚醚酰亚胺、热固性塑料、聚酰胺、聚酰亚胺中选出的材料。
10.根据权利要求1所述的旋阀,其特征在于,所述把持件和所述阀件用相同材料制成。
11.根据权利要求1所述的旋阀,其特征在于,所述阀件和所述壳体用相同材料制成。
12.根据权利要求1所述的旋阀,其特征在于,所述阀件、所述壳体和所述把持件全部用相同材料制成。
13.根据权利要求1所述的旋阀,其特征在于,所述旋阀还包括从所述壳体延伸的凸缘,提供了把手区。
14.根据权利要求13所述的旋阀,其特征在于,所述凸缘与所述壳体整体形成。
15.根据权利要求1所述的旋阀,其特征在于,所述至少一个出口端口包括一个出口端口。
16.根据权利要求1所述的旋阀,其特征在于,所述至少一个出口端口包括两个出口端口。
17.一种制造权利要求1所述的旋阀的方法,包括:
将阀件设置到阀壳体内;
连接把持件到所述阀件,将所述阀件锁定到所述阀壳体内。
18.根据权利要求17所述的方法,其特征在于,连接所述把持件到所述阀件包括超声波焊接所述把持件到所述阀件。
19.根据权利要求17所述的方法,其特征在于,连接所述把持件到阀件包括粘接所述把持件到所述阀件。
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JP2005524804A (ja) 2005-08-18
ATE428880T1 (de) 2009-05-15
US20060138377A1 (en) 2006-06-29
US7047994B2 (en) 2006-05-23
US20030205687A1 (en) 2003-11-06
WO2003093704A1 (en) 2003-11-13
JP5107978B2 (ja) 2012-12-26
BR0309862A (pt) 2005-03-29
MXPA04010913A (es) 2005-02-14
US20050035324A1 (en) 2005-02-17
DE60327196D1 (de) 2009-05-28
CN1662762A (zh) 2005-08-31
JP2009257595A (ja) 2009-11-05

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