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公开(公告)号：US4783262A
公开(公告)日：1988-11-08
申请号：US32405
申请日：1987-03-30
CPC分类号： B01D29/41
摘要： The present invention sets forth an improved cell type filter cartridge in which the individual cells contain a separator disc having stiffening members formed at the central aperture of the cell and connected to a plurality of the separating ribs in spaced relation to each other. The coaction of the two or more discs with the separator ribs provides for a rigid, box-like structure of the ribs to impart a substantial cantilevered strength to the ribs. Additionally, at least one of the stiffening discs is positioned at or near the ends of the separator ribs to act as a load-bearing surface to prevent media intrusion of the filtering medium and thereby maintain the area of the flow path of the filtered liquid as it passes through the central aperture of the disc.
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2.发明授权Compressible differential pressure energized seals for filter elements and the like 失效用于过滤元件等的可压缩差压通电密封件
公开(公告)号：US5399264A
公开(公告)日：1995-03-21
申请号：US34730
申请日：1993-03-22
CPC分类号： B01D29/333 , B01D2201/34
摘要： A compressible differential pressure energized seal (18) coacting between a filter element (10) and the like and a housing (21) comprises a compressible portion (35) having a large open end (36) and a small open end (37), the large end (36) directed toward and contacting the housing (21 ) and the small end (37) directed toward the filter (10) element; and an annular flange (38) integrally attached to the compressible portion (35) at its small end (37) and extending outwardly, the flange (38) operatively communicating with the filter element (10). The seal (18) may also include at least one flap (43) to center the filter element (10) to which it is attached onto a centering rod (31 ) carried within the housing (21 ). Such a seal (18) is compressed when the element (10) is operationally enclosed within the housing (21 ) to provide a leak-proof seal during operation and is self-energizing during operation such that as the differential pressure increases, it more forcefully engages the sealing surface.
摘要翻译： 在过滤器元件（10）等之间共同作用的可压缩差压通电密封件（18）和壳体（21）包括具有大开口端（36）和小开口端（37）的可压缩部分（35） 所述大端（36）指向并接触所述壳体（21）和指向所述过滤器（10）元件的所述小端部（37）; 以及在其小端（37）处一体地附接到可压缩部分（35）并向外延伸的环形凸缘（38），凸缘（38）与过滤元件（10）可操作地连通。 密封件（18）还可以包括至少一个翼片（43），以将其所附接的过滤器元件（10）居中放置在承载在壳体（21）内的定心杆（31）上。 当元件（10）被操作地封闭在壳体（21）内时，这样的密封件（18）被压缩，以在操作期间提供防漏密封，并且在操作期间自动启动，使得随着差压增加，它更有力 接合密封表面。
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公开(公告)号：US4929354A
公开(公告)日：1990-05-29
申请号：US339922
申请日：1989-04-17
CPC分类号： B01D63/067 , B01D63/061 , B01D65/003 , B01D69/00 , B01D69/06 , B01D71/56
摘要： A filter element comprising a hydrophilic organic polymeric microporous filter membrane having a preformed substantially non-porous sealing area and a filter housing having, preferably, a hydrophobic thermoplastic sealing surface in thermoplastic sealing relationship with the sealing area. Preferably, the filter membrane is a pleated cylindrical membrane and the housing includes endcaps thereto. The preferred membrane is nylon. The preferred pleated cylindrical membrane is produced from an elongated porous filtration area longitudinally bordered by substantially non-porous sealing areas. Such a membrane may be produced by a specific casting method or collapsing the pores along the longitudinal borders of the filtration area. The filter element is particularly useful for the filtration of aqueous liquids, particularly parenteral or body liquids.
摘要翻译： 一种过滤元件，包括具有预先形成的基本上无孔的密封区域的亲水性有机聚合物微孔过滤膜和过滤器壳体，其优选地具有与密封区域热塑性密封关系的疏水性热塑性密封表面。 优选地，过滤膜是折叠的圆柱形膜，并且壳体包括其顶盖。 优选的膜是尼龙。 优选的折叠圆柱形膜由从基本上无孔的密封区域纵向界定的细长的多孔过滤区产生。 这样的膜可以通过特定的浇铸方法制造或者沿着过滤区域的纵向边缘折叠孔。 过滤元件特别适用于过滤含水液体，特别是肠胃外或体液。
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公开(公告)号：US4731184A
公开(公告)日：1988-03-15
申请号：US38122
申请日：1987-04-14
CPC分类号： B01D29/111 , B01D2101/005 , B01D2201/0453 , B01D2201/182 , B01D2201/188 , B01D2201/34
摘要： A filter element adapted to be sealingly clamped in a filter housing. The element comprises a porous hollow cylindrical integral self-supporting bonded fibrous structure. The structure has thermally melt bonded to at least one end thereof, a thermoplastic polymer closed cell foam sealing gasket. The gasket is adapted to provide a sealing surface between the end of the cartridge and the sealing edge of the filter housing. In a preferred embodiment, the sealing edges of the filter housing used in conjunction with the aforedescribed filter element comprises at least two circular sealing edges concentric to the axis of the cylindrical filter element. Such a combination provides a means for determinging whether there is leakage past the sealing edges by the discoloration of the sealing gasket area between the concentric sealing edges by the liquid being filtered.
摘要翻译： 适于密封地夹紧在过滤器壳体中的过滤元件。 元件包括多孔中空圆柱形整体自支撑粘合纤维结构。 该结构已经热熔融粘合到其至少一个端部，即热塑性聚合物闭孔泡沫密封垫片。 该垫圈适于提供在该盒的端部与过滤器壳体的密封边缘之间的密封表面。 在优选实施例中，与上述过滤器元件结合使用的过滤器壳体的密封边缘包括与圆柱形过滤元件的轴线同心的至少两个圆形密封边缘。 这种组合提供了一种方法，用于通过被过滤的液体在同心密封边缘之间的密封垫圈区域的变色来确定是否存在渗漏通过密封边缘的泄漏。
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公开(公告)号：US4645567A
公开(公告)日：1987-02-24
申请号：US722417
申请日：1985-04-11
摘要： Process for production of anionically charged filter media sheet including pretreatment of filter elements with cationic charge modifier, preferably, employing inorganic colloidal silica charge modifiers. The resulting filters are used for the removal of haze or haze formers from beverages.
摘要翻译： 用于生产阴离子电荷过滤介质片的方法，包括用阳离子电荷调节剂预处理过滤元件，优选使用无机胶体二氧化硅电荷改性剂。 所得的过滤器用于从饮料中除去雾度或雾度形成剂。
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6.发明授权Process for producing a microporous polymeric filter membrane with adjacent non-porous edge layers and a pleated filter element formed from the membrane 失效用于生产具有相邻无孔边缘层的微孔聚合物过滤膜和由膜形成的褶皱过滤元件的方法
公开(公告)号：US4579698A
公开(公告)日：1986-04-01
申请号：US700784
申请日：1985-02-12
CPC分类号： B01D69/12 , B01D63/061 , B01D63/067 , B01D65/003 , B01D67/0013 , B01D71/56 , Y10S264/48
摘要： A filter element comprising a hydrophilic organic polymeric microporous filter membrane having a preformed substantially non-porous sealing area and a filter housing having, preferably, a hydrophobic thermoplastic sealing surface in thermoplastic sealing relationship with the sealing area. Preferably, the filter membrane is a pleated cylindrical membrane and the housing includes endcaps thereto. The preferred membrane is nylon.The preferred pleated cylindrical membrane is produced from an elongated porous filtration area longitudinally bordered by substantially non-porous sealing areas. Such a membrane may be produced by a specific casting method or collapsing the pores along the longitudinal borders of the filtration area. The filter element is particularly useful for the filtration of aqueous liquids, particularly parenteral or body liquids.
摘要翻译： 一种过滤元件，包括具有预先形成的基本无孔密封区域的亲水性有机聚合物微孔过滤膜和过滤器壳体，其优选地具有与密封区域热塑性密封关系的疏水性热塑性密封表面。 优选地，过滤膜是折叠的圆柱形膜，并且壳体包括其顶盖。 优选的膜是尼龙。 优选的折叠圆柱形膜由从基本上无孔的密封区域纵向界定的细长的多孔过滤区产生。 这样的膜可以通过特定的浇铸方法制造或者沿着过滤区域的纵向边缘折叠孔。 该过滤器元件是用于含水液体，特别是胃肠外或体液中的过滤是特别有用的。
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公开(公告)号：US4673504A
公开(公告)日：1987-06-16
申请号：US649561
申请日：1984-09-11
CPC分类号： B01D67/0093 , A61L2/0017 , A61L2/022 , B01D67/0011 , B01D71/56 , B01D2323/12 , B01D2323/30 , B01D2325/36
摘要： A cationic charge modified microporous membrane comprising a hydrophilic organic polymeric microporous membrane and a cationic charge modifying agent bonded to substantially all of the wetted surfaces of the membrane, the charge modifying agent being an epichlorohydrin modified polyamide having tertiary amine or quaternary ammonium groups. A secondary charge modifying agent may be employed selected from: (i) aliphatic polyamines having at least one primary amine or at least two secondary amines; and (ii) aliphatic amines having at least one secondary amine and a carboxyl or hydroxyl substituent. Processes for producing and using the membrane are also described.
摘要翻译： 一种阳离子电荷改性微孔膜，其包含亲水性有机聚合物微孔膜和与膜的基本上所有润湿表面结合的阳离子电荷改性剂，电荷改性剂是具有叔胺或季铵基团的表氯醇改性聚酰胺。 可以使用次要电荷改性剂，其选自：（i）具有至少一个伯胺或至少两个仲胺的脂族多胺; 和（ii）具有至少一个仲胺和羧基或羟基取代基的脂族胺。 还描述了用于生产和使用膜的方法。
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公开(公告)号：US4366068A
公开(公告)日：1982-12-28
申请号：US276584
申请日：1981-06-23
CPC分类号： B01J20/28033 , B01D39/083 , B01D39/18 , B01D39/2072 , B01J20/28028 , D21H11/22 , D21H27/08 , B01D2239/0407 , B01D2239/0414 , B01D2239/0485 , B01D2239/1233 , B01D2239/1241
摘要： A filter media sheet comprising fine particulate and a self-bonding matrix of cellulose fiber, the surfaces of at least one of which are modified with cationic colloidal silica.
摘要翻译： 一种过滤介质片，其包含细颗粒和纤维素纤维的自粘合基质，其中至少一种的表面用阳离子胶体二氧化硅改性。
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公开(公告)号：US4007113A
公开(公告)日：1977-02-08
申请号：US598097
申请日：1975-07-22
申请人： Eugene A. Ostreicher
发明人： Eugene A. Ostreicher
CPC分类号： B01D69/141 , B01D36/003 , B01D39/02 , B01D39/163 , B01D39/18 , B01D39/2017 , B01D2239/0478 , B01D2239/0492 , B01D2239/1233 , B01D2239/1241
摘要： Improved filter media comprised of negatively charged high surface area particulate filter material the surface of which is modified with a melamine-formaldehyde cationic colloid; processes for the preparation thereof; and use in liquid filtration to remove submicron contaminants including negatively charged particles.
摘要翻译： 改进的过滤介质由带负电荷的高表面积微粒过滤材料组成，其表面用三聚氰胺 - 甲醛阳离子胶体改性; 制备方法; 并用于液体过滤以除去亚微米污染物，包括带负电荷的颗粒。
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公开(公告)号：US4859340A
公开(公告)日：1989-08-22
申请号：US186695
申请日：1988-04-21
CPC分类号： B01J20/28033 , B01D39/14 , B01D39/18 , B01D39/2072 , B01J20/28028 , D21H11/22 , D21H27/08
摘要： A filter media sheet comprising fine particulate and a self-bonding matrix of cellulose fiber, the surfaces of at least one of which are modified with a polyamido-polyamine epichlorhydrin cationic resin, the matrix incorporating beaten cellulose fiber to provide a Canadian Standard Freeness of less than 600 ml.
摘要翻译： 一种过滤介质片，其包含纤维素纤维的细颗粒和自粘合基质，其中至少一种的表面用聚酰胺 - 多胺表氯醇阳离子树脂改性，所述基质掺入胨纤维素纤维，以提供较少的加拿大标准游离度 超过600毫升。
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