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公开(公告)号：EP0776244A1
公开(公告)日：1997-06-04
申请号：EP96919458.0
申请日：1996-06-14
CPC分类号： B01D24/24 , B01D24/12 , B01D24/22 , B01D24/4626 , B01D2201/4084
摘要： Lateral member assembly for use in an underdrain lateral distribution system is made of plastics but is as capable as much heavier and more costly prior art metallic assemblies in supporting a bed of filter media which must be periodically backwashed with liquid and gas. Complementary elements, including a rigid extruded floor plate member having longitudinally extending side edge channels, and an overlying screen member having flange portions adapted to be retained by undercut recesses in the side edge channels, are adapted to be assembled to each other to form hollow lateral assemblies. In a preferred embodiment, the screen member is telescopically assembled to the floor plate member to cause the screen flange portions to interlock with the recesses in the side edge channels. The resulting assembly is sealed against leakage where the members are interlocked by a pair of flexible, integral plastic sealing strips which are co-extruded with the rigid floor plate member. In an alternative arrangement, the flange portions of the screen members engage a cam surface on the floor plate member which forces them away from each other as the screen member is pressed down against the floor plate member, thus causing them to snap into the undercut recesses in the side edge channels. The flange portions are then retained in a locked relationship with the floorplate member and sealed by flexible rod members forced into the space between the outside surfaces of the screen member and the outer walls of the side edge channels.
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2.发明公开Apparatus for uniformly distributing gas and/or liquid in an underdrain lateral system 失效一种用于在横向暗渠系统的气体和/或液体的均匀分布的设备。
公开(公告)号：EP0582007A1
公开(公告)日：1994-02-09
申请号：EP92307111.2
申请日：1992-08-04
CPC分类号： B01D24/22 , B01D24/24 , B01D24/4626 , B01D24/4631
摘要： Underdrain lateral system, which is especially adapted for use in a gravity filter bed, includes, as its preferred embodiment, scallop-shaped laterals (26, 126) having an upper, wrapped wire, slotted screen surface (28). The screen surface supports and retains the filter media particles (118) directly, without the necessity of an underlying gravel layer, and is itself supported by channel-shaped rod members (34) which are welded to the wires (30). The web portions (36) of the channel-shaped rod members perform the function of simultaneously distributing air and water during backwashing, and include a smaller total area of apertures (38) in upper channels and a larger total area of apertures (40) in lower channels to cause a plenum (56) to be formed inside the laterals which ensures that the distribution of air and water will be uniform throughout the lateral, even if the lateral is not perfectly level. Distribution of the air and water throughout all of the laterals is made even more uniform by mounting the laterals on a header (124) and providing perforated flow tubes (122) which extend from each lateral into the header to produce an additional air plenum (135) therein.
摘要翻译： 暗渠横向系统，这是特别适合于用在重力过滤床，包括作为其优选实施方式，扇贝形支管（26，126）在上，缠绕的线具有，开槽屏幕表面（28）。 屏幕表面支撑和保持过滤介质颗粒（118）直接地，没有底层砾石层的必要性，并且本身由焊接到导线（30）的槽形杆件（34）支撑。 通道形杆件的腹板部分（36）执行的反洗过程中同时分配的空气和水的功能，并且包括在上通道孔径（38）的较小的总面积和孔径的更大总面积（40） 下通道，以使气室（56），以确保没有空气和水的分布将是均匀的整个侧向支管的内部形成，即使横向不是完全水平。 空气和水的分布在整个所有的支管由安装在一个头（124）的支管，并提供穿孔的流管（122），其从每个横向延伸到报头中的附加空气压力通风系统，以产生变得更加均匀（135 ）在其中。
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公开(公告)号：EP0572083A3
公开(公告)日：1994-02-09
申请号：EP93201471.5
申请日：1993-05-24
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： An improvement for a filter system which distributes backwash fluid uniformly throughout a bed of granular media is disclosed. The filter system includes a distributor positioned beneath and supporting the media, with the distributor having a plurality of walls which define a primary horizontal conduit and a secondary horizontal conduit. At least one of the walls which define the conduits contains metering orifices that connect the primary conduit to the secondary conduit. The improvement includes at least one baffle positioned within the primary conduit to facilitate uniform flow of backwash fluid from the primary conduit through the metering orifices into the secondary conduit. The baffle may comprise flanges extending from the walls which define the primary conduit normal to a fluid flow direction in the conduit. Alternatively, the baffle may include posts positioned within the conduit. The baffle generally reduces flow velocity near the wall which contains the metering orifices to enhance distribution of backwash fluids from the primary conduit to the secondary conduit. The baffle is preferably located near an inlet for the primary conduit, which is the high energy portion of the conduit. The invention also includes tubular inserts which may be placed in the metering orifices to assist backwash fluid flow in making the 90 degree turn from the primary conduit into the metering orifices.
摘要翻译： 公开了一种过滤器系统的改进，其将反洗流体均匀地分布在整个粒状介质床中。 过滤器系统包括位于下方并支撑介质的分配器，分配器具有限定主水平导管和副水平导管的多个壁。 限定导管的壁中的至少一个包含将主导管连接到次导管的计量孔。 改进包括至少一个位于主管道内的挡板，以便于反冲洗流体从主管道通过计量孔道均匀流入副管道。 挡板可以包括从限定主导管垂直于导管中的流体流动方向的壁延伸的凸缘。 或者，挡板可以包括定位在导管内的柱。 挡板通常降低靠近包含计量孔的壁的流速，以增强从主管道到次管道的反洗流体的分配。 挡板优选位于主导管的入口附近，主导管是导管的高能量部分。 本发明还包括可以放置在计量孔中的管状插入件，以帮助反冲洗流体流动，从主管道进入计量孔90度转弯。
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4.发明公开Air duct block for air/water underdrain systems in gravity filters 失效LuftleitungsblockfürLuft / Wasserablaufsysteme in Schwerkraftfiltern。
公开(公告)号：EP0562722A1
公开(公告)日：1993-09-29
申请号：EP93301436.7
申请日：1993-02-25
发明人： Brown, Marvin A.
IPC分类号： B01D24/24
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： An air duct block for air/water underdrain systems in gravity filters comprising a row of interconnected air duct blocks positioned below the filtering media and extending transversely to the underdrain laterals. Each air duct block is in communication with at least one adjacent individual underdrain filter block to supply backwash gas thereto during backwashing operations, thereby supplying backwash gas to its associated lateral. Each air duct block is in further communication with at least one adjacent air duct block such that backwash gas flows between the interconnected air duct blocks and along the row of air duct blocks. This system supplies backwash gas to the entire underdrain system through a single pipe from a source of supply.
摘要翻译： 用于重力过滤器中的用于空气/水的缺水系统的空气管道块，包括位于过滤介质下方并横向于下沉管道延伸的一排互连的空气管道块。 每个空气管道块与至少一个相邻的单独的下划线过滤块连通，以在回洗操作期间向其供应反冲洗气体，从而将反冲洗气体供应到其相关联的侧面。 每个空气管道块与至少一个相邻的空气管道块进一步连通，使得反冲洗气体在相互连接的空气管道块之间并沿着排气管道块流动。 该系统通过来自供应源的单个管道向整个排水系统提供反冲洗气体。
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公开(公告)号：EP0523293A1
公开(公告)日：1993-01-20
申请号：EP91306431.7
申请日：1991-07-16
申请人： UNIFILT CORPORATION
发明人： Walter, Thomas P.
IPC分类号： B01D24/46
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： To prevent turbulence in the water in an underdrain (2) during gas cleansing, the underdrain comprising laterals (2) and containing gas chambers (8), a horizontal baffle (30) is present between a compensating chamber (6) and the gas chamber (8).
摘要翻译： 为了防止气体清洁期间漏水（2）中的水中的湍流，包括侧壁（2）和包含气体室（8）的缺水，水平挡板（30）存在于补偿室（6）和气室 （8）。
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公开(公告)号：EP0520000A1
公开(公告)日：1992-12-30
申请号：EP91906387
申请日：1991-02-27
申请人： VOR ZDENEK
发明人： VOR ZDENEK
IPC分类号： B01D24/12
CPC分类号： B01D24/12 , B01D24/14 , B01D24/4626
摘要： A liquid distributor for introducing flushing or rinsing liquid and liquid to be filtered into a granular filter bed and for removing filtrate from the bed. The distributor is intended for use in a filter for cleansing liquids and one or more of the distributors are mounted within the filter, at the bottom thereof. The distributor has formed therein a number of narrow slots which are intended for the filtrate and the width of which is smaller than the bed granules. The distributor includes one or more openings whose size is many times greater than the bed granules, these openings being intended for the flushing liquid, which is liable to contain coarse contaminants, particles, particularly when the filter is used to filter sewage water. Each type of opening is covered with a resilient or sprung shield, which permits liquid to flow into and out from the housing in a direction intended for respective openings.
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公开(公告)号：EP2418407A3
公开(公告)日：2012-12-26
申请号：EP11250720.7
申请日：2011-08-11
CPC分类号： F16K17/0406 , B01D24/12 , B01D24/4626 , B01D24/4636 , Y10T137/7839 , Y10T137/7849 , Y10T137/7866
摘要： A variable flow control nozzle (50) has a head (52), a tube (54), and a valve (56). The head (52) disposes adjacent an opening (22) and has a screen (60) for passage of fluid flow into and out of the head's (52) interior. The tube (54) extends from the head (52) through the opening (22) and secures the head (52) thereto. A tube passage communicates the interior of the head (52) with the other side of the opening (22). The valve (56) disposed in the passage has a first condition permitting first fluid flow from the passage to the interior of the head and has a second condition permitting second fluid flow from the interior to the passage. The second fluid flow may be greater than the first fluid flow. The tube (54) can have first (70) and second (80) tube members with different internal diameters, and the valve (56) can use a ball (90) movable between positions in the tube members (70,80).
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公开(公告)号：EP2418407A2
公开(公告)日：2012-02-15
申请号：EP11250720.7
申请日：2011-08-11
CPC分类号： F16K17/0406 , B01D24/12 , B01D24/4626 , B01D24/4636 , Y10T137/7839 , Y10T137/7849 , Y10T137/7866
摘要： A variable flow control nozzle (50) has a head (52), a tube (54), and a valve (56). The head (52) disposes adjacent an opening (22) and has a screen (60) for passage of fluid flow into and out of the head's (52) interior. The tube (54) extends from the head (52) through the opening (22) and secures the head (52) thereto. A tube passage communicates the interior of the head (52) with the other side of the opening (22). The valve (56) disposed in the passage has a first condition permitting first fluid flow from the passage to the interior of the head and has a second condition permitting second fluid flow from the interior to the passage. The second fluid flow may be greater than the first fluid flow. The tube (54) can have first (70) and second (80) tube members with different internal diameters, and the valve (56) can use a ball (90) movable between positions in the tube members (70,80).
摘要翻译： 可变流量控制喷嘴（50）具有头部（52），管（54）和阀（56）。 头部（52）邻近开口（22）设置并具有用于使流体流入和流出头部（52）内部的筛网（60）。 管（54）从头部（52）延伸通过开口（22）并将头部（52）固定到其上。 管道将头部（52）的内部与开口（22）的另一侧连通。 设置在通道中的阀（56）具有允许第一流体从通道流到头部内部的第一状态，并具有允许第二流体从内部流到通道的第二状态。 第二流体流可以大于第一流体流动。 管（54）可以具有不同内径的第一（70）和第二（80）管构件，并且阀（56）可以使用在管构件（70,80）中的位置之间可移动的球（90）。
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公开(公告)号：EP0443747B1
公开(公告)日：1994-01-19
申请号：EP91300950.2
申请日：1991-02-06
IPC分类号： C02F1/42
CPC分类号： C02F1/42 , B01D24/14 , B01D24/4626 , B01D24/4631 , B01D35/153 , Y10T137/86348 , Y10T137/87676 , Y10T137/87877
摘要： A flow collector/distributor for a water treatment tank comprises a housing proportioned to communicate through a wall of the water treatment tank to provide flow communication between the tank interior and the tank exterior. The collector/distributor defines an inner end to project inwardly from the tank wall and an outward end to face outwardly from the tank wall. A plurality of slots are defined in the tubular housing, positioned to communicate with the tank interior when the collector/distributor is seated in the tank wall. The slots are of a width which is narrow enough to permit water flow therethrough while substantially preventing passage therethrough of water treatment material present within the tank. One or more one-way valves are provided to permit water flow through all of the slots from the tank interior through the collector/distributor to the tank exterior, but to prevent water flow through some, but not all, of the slots from the tank exterior through the collector/distributor to the tank interior. Also, a novel slot design is disclosed having improved flow characteristics.
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公开(公告)号：EP0366903A3
公开(公告)日：1990-08-01
申请号：EP89116420.4
申请日：1989-09-06
申请人： Furrer, Walter
发明人： Brulhart, Paul
IPC分类号： B01D29/46
CPC分类号： B01D24/4626 , B01D29/15 , B01D29/46
摘要： Die Filterdüse (1) ist mit ringförmigen Filterlamellen ausgerüstet. Diese legen sowohl radiale (28) als auch die Filterlamellen (18) durchsetzende (26), der Führung von Filterflüssigkeit dienende Strömungswege (26, 28) fest. Diese Durchgänge (26) durch die Filterlamellen (18) sind als sich in Strömungsrichtung des gefilterten Wassers verengende Durchgänge (26) ausgebildet, die gleichmässig über die Lamelle (18) verteilt sind. Die Lamellen (18) weisen Anschläge auf, welche sicherstellen, dass die Durchgänge (26) zweier benachbarter Lamellen nicht fluchten. Bei einer solchen Filterdüse ist die Verstopfungsgefahr geringer als bei bekannten Düsen. Jene stellen daher einen regelmässigeren Betrieb sicher und verlangen weniger häufige Reinigungen.
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