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公开(公告)号：EP2760597A4
公开(公告)日：2015-05-13
申请号：EP12836891
申请日：2012-08-30
申请人： DOIG IAN DRACUP
发明人： DOIG IAN DRACUP
IPC分类号： B08B9/055 , F16L55/128 , F16L55/38 , F16L55/44
CPC分类号： B08B9/055 , B08B9/0553 , F16L55/1283 , F16L55/38 , F16L55/44
摘要： Pigs (10) are propelled forwards by a propulsion fluid in a pipeline (21). The pigs (10) have an upstream end (13), a downstream end (11), and an intermediate section (12). The intermediate section has a variable geometry chamber (16) associated therewith and one or more outwardly extending external pawl teeth (15). The pawl teeth are automatically displaceable outwardly relative to a longitudinal axis (9) in response to a pressure differential between a downstream pressure and an upstream pressure. The pig is configured such that a change in a geometry of the chamber in response to the pressure differential between the downstream pressure and the upstream pressure causes the one or more pawl teeth to automatically displace outwardly when the upstream pressure is less than the downstream pressure. When the pawl teeth are deployed, upstream displacement of the pig is inhibited. Various related systems (5) and methods are also disclosed.
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2.发明公开DUCKBILL TYPE CHECK VALVE WITH CURVED AND RESILIENTLY BIASED CLOSING SEAL 审中-公开有着弯曲并弹性偏置，封闭密封件鹅颈式止回阀
公开(公告)号：EP2145124A1
公开(公告)日：2010-01-20
申请号：EP08747915.0
申请日：2008-05-05
申请人： Doig, Ian Dracup
发明人： Doig, Ian Dracup
CPC分类号： F16K15/147 , Y10T137/3331 , Y10T137/7882 , Y10T137/7883
摘要： A check valve is provided comprising a conduit for conveying a fluid, the conduit having an inlet and an outlet, the conduit having a first region adjacent the outlet (13) comprising a flexible wall, two opposing sides of the flexible wall converging towards each other to form a closed geometry when the pressure of the fluid upstream of the inlet and the pressure of the fluid downstream of the outlet are substantially equal, the closed geometry comprising each of the opposing sides (23, 24) being arcuate in cross-section and lying against each other in a substantially sealing relationship (21, 22). Preferably, two connecting regions of the wall connecting the two opposing sides (15, 16) are biased towards each other by a biasing means. Preferably, the biasing means comprises one or more flexible ring members (25) encircling the flexible wall attached at points (25A and 25B). Preferably, the conduit takes the form of a duck beak valve (20). The figure shows an end view onto the check valve outlet.
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公开(公告)号：EP2285467A1
公开(公告)日：2011-02-23
申请号：EP09729358.3
申请日：2009-04-02
申请人： Doig, Ian Dracup
发明人： Doig, Ian Dracup
CPC分类号： B01D29/66 , B01D29/114 , B01D29/52 , B01D29/682 , B01D35/10
摘要： A filtration barrier comprises first elements that are fibers, strips, or bristles wherein apertures between elements provide passages for a fluid transporting granules to the filtration barrier, and wherein the elements (11) are supported against deflection by second elements (12) when the fluid is flowing in a forwards direction whereby granules are prevented from accompanying the fluid through said passages by the barrier, but whereby the second elements do not support the first elements against deflection when the fluid flows in a (back-wash) direction opposite the forwards direction, when the elements (11a, 11b, 11c) become deflected by the fluid to increase the size of the apertures. In various embodiments of the invention the elements are supported at one end or both ends, and elements are arranged to deflect differently to further increase the apertures between neighboring elements as shown below.
摘要翻译： 过滤屏障包括第一元件，所述第一元件是纤维，带或刷毛，其中元件之间的孔提供流体输送颗粒到过滤屏障的通道，并且其中元件（11）在第二元件（12）被流体 沿向前的方向流动，由此阻止颗粒通过所述通道通过所述阻挡层而流体流动，但是当所述流体沿与所述前方向相反的（反洗）方向流动时，所述第二元件不支撑所述第一元件以防止挠曲 ，当元件（11a，11b，11c）被流体偏转以增加孔的尺寸时。 在本发明的各种实施例中，元件被支撑在一端或两端，并且元件被布置为不同地偏转以进一步增加相邻元件之间的孔，如下所示。
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公开(公告)号：EP1872036A2
公开(公告)日：2008-01-02
申请号：EP06721364.5
申请日：2006-04-11
申请人： Doig, Ian Dracup
发明人： Doig, Ian Dracup
IPC分类号： F16K7/07 , F16K7/04 , F16K17/02 , E03F5/22 , F16K15/14 , F16K17/10 , F04B43/12 , F16K15/16 , F04B43/14 , F16K15/18
CPC分类号： F04B43/12 , F04B43/021 , F04B43/14 , F16K7/07 , Y10T137/3109 , Y10T137/7882 , Y10T137/7886 , Y10T137/7889 , Y10T137/87829
摘要： A check valve (10) comprises, a flexible tube (11) having first and second end portions defining an inlet (13) and an outlet (14), respectively, and a rigid valve body (12) surrounding the flexible tube (11). The end portions of the flexible tube are sealingly fixed to the valve body (12) to define an enclosed space (17) between the exterior of the flexible tube and the interior of the valve body. A fixed volume of a substantially incompressible fluid is located in the enclosed space (17). When the pressure at the outlet (14) is greater than the pressure at the inlet (13), the flexible tube is substantially collapsed so as to close the valve or allow severely restricted flow. However when the pressure at the inlet is greater than that at the outlet, some of the fluid is displaced from the inlet area towards the outlet area so that the flexible tube (11) is expanded in the area adjacent the inlet and the tube is substantially open. A pump based on a series of valves having some of the attributes of the check valve is also disclosed, as is a vacuum driven sewer system that incorporates a pinch valve.
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公开(公告)号：EP2531426A1
公开(公告)日：2012-12-12
申请号：EP11739258.9
申请日：2011-01-19
申请人： Doig, Ian Dracup
发明人： Doig, Ian Dracup
CPC分类号： F04B15/02 , B65G53/32 , B65G53/525 , B65G53/54 , B65G2201/0291 , F04B43/12 , F04B43/14 , F16L55/46
摘要： A pipeline (500) equipped with at least one pump (400) transports granules dispersed in a carrier fluid in intervals between co-transported pigs in a pipeline. Each pump and each pig is configured to preserve the intervals between pigs, and the orientation of the pigs, during passage of the pigs and granules through each pump. Also, each pig may comprise peripheral apertures providing a leakage of carrier fluid into the intervals downstream of each pig as a means of preserving the dispersion of granules within the pipeline. In the example shown granules are introduced to the pipeline by inlet feed hopper (400), and granules are removed from the pipeline at outlet delivery hopper 650. Hopper 404 introduces pigs at the pipeline inlet and hopper 652 removes pigs at the pipeline outlet: pigs are returned to hopper (404) by the pipeline (500A).
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公开(公告)号：EP1872036A4
公开(公告)日：2010-10-20
申请号：EP06721364
申请日：2006-04-11
申请人： DOIG IAN DRACUP
发明人： DOIG IAN DRACUP
IPC分类号： F16K7/07 , E03F5/22 , F04B43/12 , F04B43/14 , F16K7/04 , F16K15/14 , F16K15/16 , F16K15/18 , F16K17/02 , F16K17/10
CPC分类号： F04B43/12 , F04B43/021 , F04B43/14 , F16K7/07 , Y10T137/3109 , Y10T137/7882 , Y10T137/7886 , Y10T137/7889 , Y10T137/87829
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公开(公告)号：EP2760597A1
公开(公告)日：2014-08-06
申请号：EP12836891.7
申请日：2012-08-30
申请人： Doig, Ian Dracup
发明人： Doig, Ian Dracup
CPC分类号： B08B9/055 , B08B9/0553 , F16L55/1283 , F16L55/38 , F16L55/44
摘要： Pigs (10) are propelled forwards by a propulsion fluid in a pipeline (21). The pigs (10) have an upstream end (13), a downstream end (11), and an intermediate section (12). The intermediate section has a variable geometry chamber (16) associated therewith and one or more outwardly extending external pawl teeth (15). The pawl teeth are automatically displaceable outwardly relative to a longitudinal axis (9) in response to a pressure differential between a downstream pressure and an upstream pressure. The pig is configured such that a change in a geometry of the chamber in response to the pressure differential between the downstream pressure and the upstream pressure causes the one or more pawl teeth to automatically displace outwardly when the upstream pressure is less than the downstream pressure. When the pawl teeth are deployed, upstream displacement of the pig is inhibited. Various related systems (5) and methods are also disclosed.
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公开(公告)号：EP2285467A4
公开(公告)日：2011-11-23
申请号：EP09729358
申请日：2009-04-02
申请人： DOIG IAN DRACUP
发明人： DOIG IAN DRACUP
CPC分类号： B01D29/66 , B01D29/114 , B01D29/52 , B01D29/682 , B01D35/10
摘要： A filtration barrier comprises first elements that are fibers, strips, or bristles wherein apertures between elements provide passages for a fluid transporting granules to the filtration barrier, and wherein the elements (11) are supported against deflection by second elements (12) when the fluid is flowing in a forwards direction whereby granules are prevented from accompanying the fluid through said passages by the barrier, but whereby the second elements do not support the first elements against deflection when the fluid flows in a (back-wash) direction opposite the forwards direction, when the elements (11a, 11b, 11c) become deflected by the fluid to increase the size of the apertures. In various embodiments of the invention the elements are supported at one end or both ends, and elements are arranged to deflect differently to further increase the apertures between neighboring elements as shown below.
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