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公开(公告)号：EP1075332A1
公开(公告)日：2001-02-14
申请号：EP99961651.9
申请日：1999-11-10
发明人： GRIMES, David, B.
摘要： The conventional infeed head (22) and inverted cone (44) of a Uniflow cleaner are connected by a generally cylindrical channel dam segment (38) which has an annular inwardly extending channel dam (42). The narrow end of the inverted cone (44) is connected to a separation body (50) through which a vortex finder (60) extends into the inverted cone (44). The light reject particles (32) are removed from the input flow (26) through the vortex finder (60). Accepts (28) and heavy rejects (30) flow into an inverted hydrocyclone chamber (72) within the separation body (50) defined between an outer cylindrical ring (62) and an inner cylindrical ring (64) and the vortex finder (60). An annular heavy rejects chamber (66) is defined exterior to the outer ring (62), and fluid is drawn off tangentially therefrom. Accepts (28) flow downwardly through the inner ring (64) into a bowl (56) beneath the separation body (50), where they are removed from an accepts outlet (82). The cylindrical or concave surfaces of the separation body (50) are economical to manufacture.
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公开(公告)号：EP1019197A1
公开(公告)日：2000-07-19
申请号：EP98911733.8
申请日：1998-03-17
发明人： GRIMES, David, B.
摘要： The centrifugal cleaner (20) of this invention is of the type having an inverted cylindrical cone (36), with a tangential inlet (34) at the top and an outlet at the bottom (26). The improvement consists of placing a ring (22) or flow smoothing means on the inside surface of the cylindrical cone about one-half the diameter of the base of the cone (36) down from the inlet. The ring (22) forces the stock injected into the centrifugal cleaner (20) to flow towards the axis of the cone away from the inside cone wall. Once the stock passes over the dam (22) it once again flows to the inner wall of the cone (36). The stock, in being forced to flow over the ring (22), is made uniform, eliminating spiraling of the flow which has been found to decrease the efficiency with which separation within the cleaner is accomplished.
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公开(公告)号：EP0975834A1
公开(公告)日：2000-02-02
申请号：EP98910438.5
申请日：1998-03-17
CPC分类号： D21B1/327 , B03B13/00 , B03D1/028 , B03D1/1412 , B03D1/1456 , B03D1/1462 , B03D1/1481 , D21F1/70 , Y02W30/646
摘要： A mixture of air and paper stock (36) made from recycled paper from which the ink particles have been chemically released is injected into a cylindrical processing vessel (22). Added surfactants create a foam (40) from the air as it rises through the stock (36) and cause the ink particles to adhere to the air bubbles, resulting in a foam containing a concentrated fraction of the ink particles with some included fibres. The foam rises to the top (43) of the vessel (22), and carries with it ink particles. Additional air injection ports (53) can be used to increase the amount of foam generated and the amount of ink removed. Flow of stock (36) and foam (42) from the vessel (22) can be controlled by adjusting valves (70) on the stock (34) and foam outlets (44, 56). Flotation sensors (60) allow the foam head to be maintained at the stock level by controlling the rate at which foam (42) is withdrawn through the foam outlets (44, 56).
摘要翻译： 由再循环纸制成的空气和纸料（36）的混合物被注入到圆柱形处理容器（22）中，所述再循环纸已经将墨颗粒化学释放。 添加的表面活性剂在空气上升通过原料（36）时产生泡沫（40），并使油墨颗粒粘附到气泡上，产生含有浓缩部分的油墨颗粒和一些包含纤维的泡沫。 泡沫上升到容器（22）的顶部（43），并带有墨水颗粒。 可以使用额外的空气注入口（53）来增加产生的泡沫量和去除的油墨量。 可以通过调节原料（34）和泡沫出口（44,56）上的阀门（70）来控制来自容器（22）的原料（36）和泡沫（42）的流动。 浮选传感器（60）通过控制泡沫（42）通过泡沫出口（44,56）排出的速度而使泡沫头保持在存储水平。
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公开(公告)号：EP0853701A1
公开(公告)日：1998-07-22
申请号：EP96936064.0
申请日：1996-09-19
发明人： GRIMES, David, B.
CPC分类号： B04C5/08 , B04C3/06 , B04C5/085 , B04C2005/133 , D21D5/24
摘要： A cleaner receives input pulp stock in an inverted conical chamber (26), which acts as a hydrocyclone to direct heavyweight reject flows outwardly, lightweight reject flows into a discharging vortex chamber and accept flows in between to a vortex finder for removal. The cleaner body has an inverted hydrocyclone chamber (34) formed beneath the inverted cone and a ceramic splitter (36) below which skims off the heavyweight reject flow from the accept flow, and diverts it into the inverted hydrocyclone chamber (34). A portion of the diverted heavyweight reject flow is removed through a toroidal heavyweight rejects relief outlet (47), but the larger fraction of the heavyweight reject flow is recirculated within the inverted hydrocyclone chamber. Because the chamber narrows as it extends upwardly, the flow increases in speed and angular velocity to such an extent that the flow within the inverted hydrocyclone chamber matches the flow passing by the chamber, thereby preventing turbulent mixing.
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