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公开(公告)号：US4267060A
公开(公告)日：1981-05-12
申请号：US123101
申请日：1980-02-19
申请人： Peter A. Miller
发明人： Peter A. Miller
CPC分类号： B01D29/096 , B01D29/19 , B01D2201/204
摘要： To seal the top cover of a vacuum travelling web filter, the top cover is lowered, by gravity, with a depending rim fitting against an upstanding rim of a filtrate chamber pan; the contaminant chamber above the filter web is closed off, and supply of filtrate is inhibited. Upon starting of the pump, a vacuum will result within the two chambers, drawing the cover tightly against the filtrate pan and, when a sufficient vacuum has been reached indicative of sealing engagement, supply of contaminant can be opened to draw contaminant into the upper chamber. As the filter cake builds up, further change in pressure in the contaminant chamber will result which, when a predetermined operating pressure level is reached, causes interruption of supply of contaminated fluid, and opening of an air vent valve to dry the resulting filter cake. Sealing fluid can be introduced between the engaging rims of the cover and the filtrate holding pan, between which rims the filter web is interposed, for example by introducing filtered fluid into a groove between the rims, or by introducing an inert gas. Preferably, filtered fluid is used which will be drawn back to the pump upon pump operation. A bypass line of filtered fluid to the pump prevents dry running thereof.
摘要翻译： 为了密封真空行进网状过滤器的顶盖，顶盖通过重力降低，其具有靠近滤液室盘的直立边缘的悬垂边缘; 过滤网上方的污染物室被封闭，滤液的供给被抑制。 在启动泵时，将在两个室内产生真空，将盖子紧紧靠在滤液盘上，并且当达到足够的真空以表示密封接合时，可以打开污染物的供应以将污染物吸入上部室 。 当滤饼积聚时，污染物室中的压力进一步变化将导致当达到预定操作压力水平时，导致污染流体的供应中断，以及打开排气阀以干燥所得到的滤饼。 密封流体可以被引入盖子的接合边缘和滤液保持盘之间，例如通过将过滤的流体引入到边缘之间的沟槽中，或者通过引入惰性气体，过滤网被插入在该过滤网之间。 优选地，使用过滤的流体，其将在泵操作时被抽回到泵中。 过滤流体到泵的旁路管路防止其干燥运行。
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公开(公告)号：US4141824A
公开(公告)日：1979-02-27
申请号：US845341
申请日：1977-10-25
申请人： Carl K. Smith
发明人： Carl K. Smith
CPC分类号： C02F3/1215 , B01D24/008 , B01D35/12 , B01D37/03 , C02F1/52 , C02F1/5236 , C02F1/5281 , C02F3/06 , Y02W10/15
摘要： Methods and apparatus for purifying water by filtration, according to which water is passed in an upward direction through one or more sand beds supported in towers, at a slow rate of flow so that the sand bed is not disturbed. The sand bed or layer is relatively deep vertically to provide superior filtration. Raw water feed to each tower is accomplished by tangential flow from the inlets. Rapid backwash of the sand bed is accomplished by opening a dump valve at the lower end of a cone provided at the base of the tower in which the sand bed is supported. Maintenance and control of bacterial activity in the lower part of the sand bed enhances purification of the water by bacterial action. Chemical treatments of the water may be used in conjuction with the filtration, including treatments with chlorine, and with alum (i.e. aluminum sulphate and/or potassium or ammonium alum) to produce a floc, and barium sulphate and/or a drilling mud may be added to assist in removal of the floc by filtration.
摘要翻译： 通过过滤净化水的方法和装置，根据该方法和装置，水以向上方向通过一个或多个支撑在塔中的沙床，以较慢的流速使得砂床不受干扰。 沙床或层相对较深，以提供优良的过滤。 通过来自入口的切向流来实现每个塔的原水进料。 沙床的快速回洗是通过在设置在砂床的塔的底部的锥体的下端打开一个倾倒阀来实现的。 砂床下部的细菌活性的维持和控制通过细菌作用增强了水的净化。 水的化学处理可以与过滤结合使用，包括用氯处理和用明矾（即硫酸铝和/或钾或铵明矾）来生产絮凝物，并且硫酸钡和/或钻井泥浆可以是 加入以帮助通过过滤除去絮凝物。
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公开(公告)号：US4136009A
公开(公告)日：1979-01-23
申请号：US852515
申请日：1977-11-17
申请人： David Samiran
发明人： David Samiran
CPC分类号： B01D46/0031 , B01D17/0214 , B01D46/2411 , B01D46/4272 , B01D50/002 , F16K31/20
摘要： An adjustable universal float for use with a liquid or fluid where a liquid is placed within the float as ballast so that the float can be adjusted to a particular specific gravity of the liquid, said float carrying a valve assembly for controlling the discharge of one or more liquids as desired from a filter housing. A deflector plate is positioned near the inlet chamber of the filter housing to direct the incoming liquid toward the inside wall of the filter housing and away from the filter element.
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公开(公告)号：US4033870A
公开(公告)日：1977-07-05
申请号：US701903
申请日：1976-07-01
CPC分类号： B01D35/12
摘要： A dual oil filter automatic switching system incorporating two oil filters and a switching oil valve and an oil pump, all connected together. The system also includes electric means incorporating a differential pressure switch and a latching relay, and an electric signal and an electrically-operative temperature switch are also disclosed. The oil valve is electrically responsive to the electric switching, and the valve directs the oil to either or both of the filters.
摘要翻译： 双油滤清器自动切换系统，包括两个油过滤器和开关油阀和油泵，全部连接在一起。 该系统还包括结合了差压开关和闭锁继电器的电气装置，并且还公开了电信号和电动式温度开关。 油阀对电气开关进行电响应，并且阀将油引导到过滤器中的一个或两个。
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公开(公告)号：US4032455A
公开(公告)日：1977-06-28
申请号：US696071
申请日：1976-06-14
申请人： Howard D. Kale
发明人： Howard D. Kale
CPC分类号： E03C1/282 , B01D29/11 , B01D35/02 , B01D35/28 , B01D2201/02 , Y10S4/14 , Y10T137/4613
摘要： A trap for use with waste water lines for sinks, laundry tubs and the like has a dip portion for retaining liquids to prevent the reverse flow of noxious gases. The lower wall of the dip portion has an opening which is smaller than the interior diameter of the trap and which is adapted to receive a closure plug. A plug for closing the opening is arranged to support a blocking member in the interior of the dip portion of the trap. The blocking member comprises a plurality of flexible fingers which are held in spaced apart relationship on a toroid such that the exterior surfaces of the fingers taper outwardly from the supporting toroid to dimension such that the fingers in combination form a circle which approximates the interior diameter of the trap and the fingers then taper inwardly until the tips of the fingers in combination define a circle of approximately the same dimension as the toroid. The flexible fingers permit the blocking member to be inserted in the trap through the relatively small opening in the dip portion. When in place within the trap, the fingers flex outwardly and the blocking member substantially covers the cross section of the trap in a plane perpendicular to the direction of liquid flow.
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公开(公告)号：US3896029A
公开(公告)日：1975-07-22
申请号：US44310074
申请日：1974-02-15
申请人： AGFA GEVAERT AG
IPC分类号： B01D35/12 , B29C47/68 , F16K11/083 , F25B49/02 , B01D29/36
CPC分类号： B29C47/68 , B01D35/12 , B29C47/0021 , B29C47/0815 , B29C47/0884 , B29C47/681 , F16K11/0836 , Y10T137/86566 , Y10T137/86751
摘要： A valve is presented which enables progressively switching from a first fiber screen pack to another without interrupting the continuous flow of filtrate at the exit of the filter installation. A characteristic feature of the invention is that no countercurrent flow in the conduits is built-up, so that the pressure in the installation is kept within reasonable limits. The structure of the valve also permits an easy air-draining of the filter to be inserted in the conduit. The conical form of the valve member guarantees leak-proof operation, notwithstanding high temperature and pressure which may be present in the installation.
摘要翻译： 提供了一种阀门，其能够逐渐从第一纤维滤网组件切换到另一个，而不会中断过滤器装置出口处的滤液的连续流动。 本发明的特征在于，不形成导管中的逆流流动，使得安装中的压力保持在合理的限度内。 阀的结构还允许过滤器容易地排空以插入管道中。 尽管安装中可能存在高温和高压，但阀门的圆锥形也保证了防漏操作。
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47.发明授权Apparatus for the continuous filtration of thermoplastic or elastomeric materials used in extrusion processes 失效用于连续过滤挤出过程中使用的热塑性弹性体材料的设备
公开(公告)号：US3825121A
公开(公告)日：1974-07-23
申请号：US36595173
申请日：1973-06-01
申请人： GK SYST INC
发明人： IRVING E
CPC分类号： B29C47/681 , B01D35/12 , B29C47/0009
摘要： The disclosure is that of an invention directed to a dual unit changeover filter, particularly for use with hot melt plastics, in which the changeover from one unit to the other can be effected without adversely affecting the quality characteristics of the throughput. Sequentially operated valves, with appropriate bleed unit connecting passages, are employed to condition an idle filter unit for operation while still permitting the operating filter unit to operate properly until the idle filter unit has been placed on line, after which the previously operating filter unit becomes shut down.
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