CN107010715B - 扩散器组件及其制造方法以及包括该组件的废水处理槽 - Google Patents
扩散器组件及其制造方法以及包括该组件的废水处理槽 Download PDFInfo
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Abstract
本发明提供了扩散器组件及其制造方法以及包括该组件的废水处理槽,包括柔性扩散器膜和扩散器主体。所述柔性扩散器膜界定圆周卷边。所述扩散器主体界定下伏所述柔性扩散器膜的圆板,以及覆盖所述圆周卷边的覆盖部分的边缘环。所述边缘环界定与所述圆周卷边的所述覆盖部分的外部形状相符的内表面。所述边缘环与所述扩散器主体成一体。这类扩散器组件可提供一次性扩散器组件选择,所述一次性扩散器组件选择具有与常规技术相比的许多优点,如改善的安装容易性、较低的重量和较低的成本。
Description
技术领域
本发明总体上涉及废水处理,并且更具体来说,涉及用于在废水处理中使用的细小气泡扩散器组件。
背景技术
柔性扩散器通常用来支持废水处理厂中的好氧生物进程。柔性扩散器通常包括由橡胶或其他类似材料构成的圆盘状、管状或带状膜,所述膜被刺穿来提供呈孔或缝形式的若干穿孔。在操作中,压缩空气穿过这些穿孔传送,以产生小气泡的股流。气泡穿过废水上升,并且向周围废水提供维持发生在其中的所需生物进程需要的氧气。
图1示出细小气泡扩散器组件100的局部断开侧面透视图,所述细小气泡扩散器组件通常在用于现代废水处理设施中,以用于对废水的“淹没”处理。仅作为一个实例,在F.L.Burton,Wastewater Engineering(McGraw-Hill College,2002)中描述具有这种组件的废水处理,其由此以引用方式并入本文中。当在使用中时,多个扩散器组件在横跨废水处理槽的若干侧向分配管道上阵列。扩散器组件可例如沿给定侧向分配管道每英尺放置。靠近槽定位的吹风机经由若干支持管道(例如,滴管和歧管)将压缩空气传送至侧向分配管道。
在扩散器组件100中,柔性扩散器膜110置放于扩散器主体120的顶上。扩散器主体120包括螺纹配接管130、空气进口140,以及用于耦接至卡环160的接收表面150。卡环160保持柔性扩散器膜110抵靠扩散器主体120。当气体穿过空气进口140施加于柔性扩散器膜110时,气体压力扩张柔性扩散器膜110远离扩散器主体120,并且致使膜的穿孔打开,以使得气体穿过所述穿孔以细小气泡形式排出。当气体压力减轻时,柔性扩散器膜110在扩散器主体120上破裂,以关闭穿孔并防止液体在相反方向上进入扩散器主体120。通常,以这种方式配置的柔性扩散器膜110产生直径小于五毫米的气泡。在这些气泡中所得的表面面积与体积的大比值促进气泡与周围废水之间的有效氧传质。细小气泡还造成废水处理槽中的向上移动,这有助于保持悬浮液中的固体废物并混合所述槽的内容物。
包括螺纹配接管的扩散器组件(如扩散器组件100)仍然相对流行,因为所述扩散器组件可经由其螺纹配接管容易地附接至气体分配管道并与气体分配管道分开,以便检修。虽然如此,检修这种装置仍然相对劳动密集,并且通常需要使用熟练工人。为了改变常规螺纹扩散器组件(例如像扩散器组件100)上的扩散器膜,扩散器组件必须在从其气体分配管道移除后放置在固定装置上,并且移除扩散器组件的卡环以允许其扩散器膜升离。然后必须将新的扩散器膜置于其适当位置,并且卡环再润滑并再应用于恰当的扭矩值。在许多情况下,卡环由于损坏也必须替换。然后仅完整的扩散器组件可从固定装置移除,并再安装至其气体分配管道,再次安装至恰当的扭矩值。
因此需要解决上述缺陷中的一些的替代性扩散器组件。
发明内容
本发明的实施方案通过提供具有柔性扩散器膜的扩散器组件来解决上述需要,所述柔性扩散器膜利用整体边缘环由扩散器主体捕获,所述整体边缘环不可与扩散器主体的剩余部分分开。这类扩散器组件可提供一次性扩散器组件选择,所述一次性扩散器组件选择具有与常规技术相比的许多优点,如改善的安装容易性、较低的重量和较低的成本。
本发明的方面针对扩散器组件,所述扩散器组件包括柔性扩散器膜和扩散器主体。柔性扩散器膜界定圆周卷边。扩散器主体界定下伏柔性扩散器膜的圆板,以及覆盖圆周卷边的覆盖部分的边缘环。边缘环界定与圆周卷边的覆盖部分的外部形状相符的内表面。边缘环与扩散器主体成一体。
本发明的另外方面针对废水处理系统,所述废水处理系统包括满足上一段的限制的扩散器组件。
最后,本发明的甚至另外的方面针对制造扩散器组件的方法。接收界定圆周卷边的柔性扩散器膜。至少部分地通过注射塑模形成扩散器主体,所述扩散器主体界定下伏柔性扩散器膜的圆板,以及覆盖圆周卷边的覆盖部分的边缘环。圆周扩散器主体部分界定与圆周卷边的覆盖部分的外部形状相符的内表面。边缘环与扩散器主体成一体。
附图说明
参照以下描述、所附权利要求书和附图,将更好地理解本发明的这些和其他特征、方面和优点,附图中:
图1示出常规细小气泡扩散器组件的局部断开侧面透视图;
图2示出附接至气体分配管道的根据本发明的例示性实施方案的三个扩散器组件的透视图;
图3和图4示出代表性扩散器组件沿着图2中所指示的平面的部分的透视截面图;
图5示出扩散器组件相对于气体分配管道的下侧的分解透视图;
图6示出扩散器组件和气体分配管道沿着图2中所指示的平面的部分的截面图;
图7示出扩散器组件和气体分配管道的部分的截面图,其中压缩气体正供应至扩散器组件;
图8示出塑模部件相对于扩散器组件的元件的局部断开分解透视图;
图9示出绕扩散器组件元件封闭的塑模部件的透视图;
图10和图11示出注射熔融塑料之前,邻近于扩散器组件的圆周卷边的空间沿着图9中所指示的平面的截面图;并且
图12和图13分别示出注射熔融塑料之后,图10和图11中所示的相同区域的截面图。
具体实施方式
将参考例示性实施方案来描述本发明。由于这个原因,可对这些实施方案执行许多修改,并且其结果将仍然落入本发明的范围之内。本文所描述的具体实施方案并非意图或不应被推断为限制条件。
如本文中和所附权利要求书中所使用,如果元件的体积不被修改百分之十以上,那么元件“基本上不被其他东西压缩”。术语“直接”意味没有任何介入元件。最后,如果在不切割、破坏、熔化,或以其他方式损坏元件的情况下,特征不可与元件的剩余部分分开,那么由元件界定的特征与所述元件“成一体”。
图2示出根据本发明的例示性实施方案的三个扩散器组件200的透视图,其中扩散器组件200附接至气体分配管道300。扩散器组件200中的每一个包括相应的扩散器主体205,所述扩散器主体支撑相应的柔性扩散器膜210。扩散器组件200和气体分配管道300可放置在废水处理槽的底部处。然后,可致使气体分配管道300将气体(例如,空气)供应至扩散器组件200,以便致使扩散器组件200将气泡释放到周围废水中。
图2至图6中示出扩散器组件200中的代表性扩散器组件的另外细节。图3和图4示出扩散器组件200沿着图2中所指示的平面的相应部分的透视截面图,而图5示出扩散器组件200相对于气体分配管道300的下侧的分解透视图。最后,图6示出扩散器组件200和气体分配管道300沿着图2中所指示的平面的部分的截面图。
柔性扩散器膜210为圆盘形的,并且界定圆周卷边215。在本例示性实施方案中,圆周卷边215具有带有圆角的正方形横截面。多个穿孔穿透柔性扩散器膜210,除了在柔性扩散器膜210的中心处的完整区域中(以下进一步描述和标记的)。扩散器主体205界定下伏柔性扩散器膜210的圆板220,以及覆盖柔性扩散器膜210的圆周卷边215的一部分(在下文中,圆周卷边215的“覆盖部分”)的边缘环225。覆盖部分由圆周卷边215中的大多数组成。
边缘环225用来将柔性扩散器膜210保持到扩散器主体205。边缘环225界定与圆周卷边215的覆盖部分的外部形状相符的内表面230,而不显著地压缩圆周卷边215。这样做时,边缘环225在其中界定多个狭槽235,每个狭槽235暴露圆周卷边215的相应外表面部分240。同时,边缘环225与扩散器主体205成一体,意味着在不切割、破坏、熔化,或以其他方式损坏扩散器主体205的情况下,边缘环225不可从扩散器主体205的剩余部分移除。这明显不同于图1中的常规扩散器组件100,其中卡环160与扩散器主体120不同,并且可移除地拧在扩散器主体120的接收表面150上。
扩散器主体205进一步描述螺纹配接管245,所述螺纹配接管具有端接于圆板220中的开口255中的内部气体通道250。在扩散器组件200以所指示的方式安装至气体分配管道300的情况下,内部气体通道250与气体分配管道300的内部305气体连通。内部气体通道250随着其靠近圆板220中的开口255而颈缩,从而形成孔口260。这个孔口260的大小可针对具体应用定制。扩散器主体205的底部上的若干肋265给扩散器主体205增加额外的强度。
仍然参考图2至图6,应注意,薄圆片270设置在柔性扩散器膜210与扩散器主体205的圆板220之间。薄圆片270包括中心孔275,所述中心孔上覆于圆板220中的开口255。如以下将进一步详细地解释,可通过绕柔性扩散器膜210注射塑模扩散器主体205来获得边缘环225的整体性以及边缘环225的内表面230相对于圆周卷边215的覆盖部分的符合性。薄圆片270有助于这个过程。
图7示出扩散器组件200和气体分配管道300沿着图2中所指示的平面的相应部分的截面图,但在压缩气体(在这种情况下为空气)正经由气体分配管道300供应至扩散器组件200的条件下。气体压力扩张柔性扩散器膜210远离扩散器主体205,并且致使气体从柔性扩散器膜210的穿孔排出作为细小气泡。柔性扩散器膜210的没有穿孔的完整区域280置放于圆板220中的开口255以上。这个完整区域280允许扩散器组件充当止回阀,并且在关闭压缩气体时防止废水溢出气体分配管道300。当切断气体压力时,柔性扩散器膜210响应于柔性扩散器膜210返回到松弛、不伸展形状的自然趋势,并且响应于周围废水的重量而塌回到扩散器主体205上。这样松弛,再产生图6中所示的条件。在将柔性扩散器膜210定位成如图6中的情况下,柔性扩散器膜210的完整区域280上覆开口255,并且防止废水在相反方向上进入内部气体通道250。
柔性扩散器膜210可包括弹性体,所述弹性体如但不限于乙烯丙烯二烯单体(EPDM)。柔性扩散器膜210的一侧或两侧可覆盖于例如像聚四氟乙烯(PTFE)的含氟弹性体中,或柔性扩散器膜210可浸渍有氟。PTFE涂层和氟浸渍已被证明来降低扩散器膜堵塞的速率。扩散器主体205可包括可注射塑模热塑性塑料,所述可注射塑模热塑性塑料例如像聚丙烯、丙烯腈丁二烯苯乙烯、聚氯乙烯和聚甲醛。薄圆片270还可包括塑料;在优选实施方案中,薄圆片270由与扩散器主体205相同的塑料形成。
如以上所指示,可通过利用若干塑模部件绕柔性扩散器膜210注射塑模扩散器主体205来形成扩散器组件200。注射塑模的一般方面已为相关领域的一般技术人员所熟知,并且还在若干易得到的出版物中描述,所述出版物包括,仅作为一个实例,D.V.Rosatto等人,Injection Molding Handbook(Springer Science&Business Media,2012),其由此以引用方式并入本文中。图8中示出塑模部件相对于扩散器组件200的元件的局部断开、分解透视图,而图9示出在注射任何熔融塑料之前的条件下,绕相同扩散器组件元件封闭的塑模部件的透视图。
为了允许重力有助于该过程,执行图8和图9中所阐述的注射塑模,其中柔性扩散器膜210相对于其在图2至图7中的取向颠倒。塑模部件包括底部模型400、第一顶部模型405、第二顶部模型410和插入件415。在注射任何塑料之前,柔性扩散器膜210自顶向下地放置在底部模型400上,以使得底部模型400上的多个支撑齿420支撑柔性扩散器膜210的圆周卷边215。然后将薄圆片270放置在柔性扩散器膜210上。最后,将第一顶部模型405、第二顶部模型410和插入件415布置在底部模型400的顶部上以实现图9中所示的情况。
以这种方式配置,模型400、405、410绕柔性扩散器膜210的圆周卷边215界定用于熔融塑料的第一空间425,从而允许扩散器主体205的边缘环225的形成。同时,模型400、405、410和插入件415在柔性扩散器膜210以上界定第二空间430,从而允许圆板220和螺纹配接管245的形成。图10和图11示出邻近于圆周卷边215的空间425、430沿着图9中所指示的平面的截面图。根据这些视图,支撑齿420如何在用来形成边缘环225的空间425中帮助支撑圆周卷边215变得很清楚。
熔融塑料可通过顶部模型405、410中的注射孔435注射。图12和图13分别示出图10和图11中所示的相同区域的截面图,但在注射形成扩散器主体205的塑料之后。其中呈现支撑齿420(图13),发现边缘环225中的多个狭槽235,所述多个狭槽在图3和图4中如此明显,从而解释这些狭槽235的来源。其中不呈现支撑齿420(图12),发现边缘环225的完全包围区域。因为熔融塑料能够直接流到柔性扩散器膜210的圆周卷边215,所以还发现边缘环225界定与圆周卷边215的覆盖部分的外部形状相符的内表面230。
当形成上述扩散器组件200的原型时,根据经验发现,在不存在薄圆片270的情况下,刚形成的圆板220具有熔合至柔性扩散器膜210的趋势。一旦这样熔合,则柔性扩散器膜210不按需要执行。相反,在薄圆片270处于适当位置的情况下,没有看到这种熔合,并且扩散器组件200适当地执行。因此,由于其有助于制造过程的方式,薄圆片270是本设计的优选方面。在相同实验期间,还根据经验观察到,柔性扩散器膜210的圆周卷边215的正方形横截面似乎允许边缘环225将圆周卷边215稳固地锚定至扩散器主体205,并且防止在使用期间的任何滑动或渗漏。因此,这个横截面形状也是优选的。在两种情况下,术语“优选”旨在意味赞同,但不一定落入本发明的范围之内。
上述扩散器组件200从而变成单体的、“固态”扩散器组件,意味所述扩散器组件不以图1中的常规扩散器组件的方式使用单独的扩散器膜、主体和螺纹卡环。因而,扩散器组件200,并且更一般来说,落入本发明的范围之内的扩散器组件可提供与常规技术相比的若干优点。例如,扩散器组件200可在本领域用作一次性部件。当柔性扩散器膜210最终变得堵塞时,整个扩散器组件200由新的扩散器组件替换。这种替换是简单的操作,仅需要一个新的部件,不需要扩散器分解、润滑、特殊扳手,或对破坏部件或渗漏的显著关注。另外,扩散器组件200的重量可显著地小于由单独组件制成的扩散器组件,因为所述扩散器组件200不需利用厚塑料来处理来自拧紧的保持部件的应力。最后,在形成扩散器组件200时可能使用较不昂贵的塑料树脂,因为单个扩散器主体在结构上比螺纹张紧的卡环和主体更结实。在某些情况下,再循环塑料可为一种选择。
应再次强调的是,本发明的上述实施方案仅意图为例示性的。其他实施方案可使用不同类型和布置的元件,以便实施所描述的功能。所附权利要求书的范围之内的这些许多替代实施方案将对本领域技术人员显而易见。
此外,本文中所公开的所有特征可由服务相同、等效或类似目的的替代性特征替换,除非另外明确地说明。因此,除非另外明确地说明,否则所公开的每个特征仅为等效或类似特征的通用系列中的一个实例。
Claims (18)
1.一种扩散器组件,其包括:
柔性扩散器膜,其界定圆周卷边;
扩散器主体,其界定下伏所述柔性扩散器膜的圆板,以及覆盖所述圆周卷边的覆盖部分的边缘环;以及
薄片,所述薄片设置在所述圆板与所述柔性扩散器膜之间;
其中,所述边缘环界定与所述圆周卷边的所述覆盖部分的外部形状相符的内表面;以及所述边缘环与所述扩散器主体成一体。
2.如权利要求1所述的扩散器组件,其中所述柔性扩散器膜包括弹性体。
3.如权利要求1所述的扩散器组件,其中所述柔性扩散器膜界定穿过所述柔性扩散器膜的多个穿孔。
4.如权利要求1所述的扩散器组件,其中所述扩散器主体包括热塑性塑料。
5.如权利要求1所述的扩散器组件,其中,所述圆板界定开口;以及所述扩散器主体界定螺纹配接管,所述螺纹配接管具有端接于所述开口中的内部气体通道。
6.如权利要求5所述的扩散器组件,其中所述柔性扩散器膜界定上覆所述开口的完整区域,所述完整区域不具有穿过所述完整区域的穿孔。
7.如权利要求5所述的扩散器组件,其中所述边缘环界定其中的多个狭槽,所述多个狭槽中的每个狭槽暴露所述圆周卷边的相应外表面部分。
8.如权利要求1所述的扩散器组件,其中所述覆盖部分由所述圆周卷边中的大多数组成。
9.如权利要求1所述的扩散器组件,其中所述圆周卷边大体上不被所述扩散器主体压缩。
10.如权利要求1所述的扩散器组件,其中所述薄片包括塑料。
11.一种包括扩散器组件的废水处理槽,所述扩散器组件包括:
柔性扩散器膜,其界定圆周卷边;
扩散器主体,其界定下伏所述柔性扩散器膜的圆板,以及覆盖所述圆周卷边的覆盖部分的边缘环;以及
薄片,所述薄片设置在所述圆板与所述柔性扩散器膜之间;
其中,所述边缘环界定与所述圆周卷边的所述覆盖部分的外部形状相符的内表面;以及所述边缘环与所述扩散器主体成一体。
12.如权利要求11所述的废水处理槽,其进一步包括气体分配管道,其中所述扩散器组件与所述气体分配管道的内部气体连通。
13.一种制造扩散器组件的方法,所述方法包括以下步骤:
接收界定圆周卷边的柔性扩散器膜;
至少部分地通过注射塑模形成扩散器主体,所述扩散器主体界定下伏所述柔性扩散器膜的圆板,以及覆盖所述圆周卷边的覆盖部分的边缘环;以及在形成所述扩散器主体的所述步骤之前,将薄片放置在所述柔性扩散器膜上,以使得在形成所述扩散器主体的所述步骤之后,所述薄片设置在所述柔性扩散器膜与所述圆板之间;
其中,所述边缘环界定与所述圆周卷边的所述覆盖部分的外部形状相符的内表面;以及所述边缘环与所述扩散器主体成一体。
14.如权利要求13所述的方法,其中所述圆周卷边在注射塑模期间由多个支撑齿支撑。
15.如权利要求14所述的方法,其中,所述边缘环界定其中的多个狭槽,所述多个狭槽中的每个狭槽暴露所述圆周卷边的相应外表面部分;以及
所述多个狭槽中的每一个位于注射塑模期间所述多个支撑齿中的相应一个所在的地方。
16.如权利要求13所述的方法,其中,在注射塑模期间,熔融塑料直接接触所述圆周卷边的所述覆盖部分。
17.如权利要求13所述的方法,其中所述薄片由塑料形成。
18.如权利要求13所述的方法,其中,所述圆板界定开口;以及
所述扩散器主体界定螺纹配接管,所述螺纹配接管具有端接于所述开口中的内部气体通道。
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DE102016113204B3 (de) * | 2016-07-18 | 2018-01-18 | Alexander Ott | Begasungseinrichtung |
US10773982B2 (en) | 2017-08-10 | 2020-09-15 | Thomas E. Frankel | Diffuser assembly |
WO2019060965A1 (en) * | 2017-09-29 | 2019-04-04 | Aquatec Maxcon Pty Ltd | DIFFUSER FOR AERATION OF A FLUID |
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US10633267B2 (en) | 2020-04-28 |
EP3207979B1 (en) | 2021-06-09 |
CN107010715A (zh) | 2017-08-04 |
EP3207979A1 (en) | 2017-08-23 |
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