摘要:
A method for producing a homogeneous and stable dispersion of ultrafine non-polar particles in a ternary polymer/solvent/non-solvent solution (dope) suitable for phase inversion formation into a controlled pore size microporous polymer membrane wherein the polymer contains homogeneously distributed ultrafine non-polar particles is disclosed. In one possible embodiment, the ultrafine non-polar particles are ultrasonically dispersed in at lest one portion of the solvent and is then added to the balance of an optionally separately prepared solvent/non-solvent solution. Subsequently, the polymer is added to and dissolved in the solvent/non-solvent/particle dispersion with the resulting solution being cast into a liquid film and subjected to phase inversion processing is disclosed The resulting polymeric microporous membranes containing highly dispersed and homogeneously distributed ultrafine non-polar particles are also disclosed.
摘要:
An at least two layer, unsupported, continuous microporous membrane is disclosed. The at least two layer, unsupported, continuous microporous membrane may include at least two different membrane pore size layers or the pore sizes may have about the same pore size. Apparatus and processes for fabricating at least a two layer unsupported, continuous, microporous membrane are also disclosed. One representative process disclosed for forming a continuous, unsupported, multilayer phase inversion microporous membrane having at least two layers comprises of the acts of: operatively positioning at least one dope applying apparatus, having at least two polymer dope feed slots, relative to a continuous moving coating surface; applying polymer dopes from each of the dope feed slots onto the continuously moving coating surface so as to create a multiple layer polymer dope coating on the coating surface; subjecting the multiple dope layer to contact with a phase inversion producing environment so as to form a wet multilayer phase inversion microporous membrane; and then washing and drying the membrane. Other representative apparatuses and processes are also disclosed.
摘要:
A filter cartridge assembly, and method for constructing the same, wherein the assembly has at least two axially adjacent filter cells separated by a spacer ring and a lifting means having a mounting portion with an opening formed therein for surrounding the outer periphery of the spacer ring. The lifting means also includes opposed elongated arms which extend radially outwardly from the central mounting portion and have gripping portions for facilitating lifting the filter cartridge assembly.
摘要:
A connector for connecting plastic tubing includes a receiver having a captured ring seal, the ring seal for compressively forming a fluid seal when in engagement with the plastic tubing; and a plurality of inward directed angled fingers disposed in the receiver for compressively engaging the tubing, a force being exertable by the fingers on the tubing, the force acting to resist withdrawal of the tubing from engagement with the fingers. A method of connecting is further included.
摘要:
A filter system (50) includes first and second filter heads each including a housing receptacle and a filter receptacle. The second filter head (10) includes an inlet (42) providing fluid communication to the housing receptacle; an unfiltered-fluid outlet (44) connected to the inlet of the first filter head (9) via an unfiltered-fluid line (64); and a filtered-fluid outlet (46) providing fluid communication to the filter receptacle and connected to the filtered-fluid opening (32) of the first head via a filter-fluid line (62). A filtered-fluid outlet (47) is provided in the first head for filtered fluid to leave the system. A plug (34) is also included to prevent fluid communication between the filtered- and unfiltered-fluid outlets within the bore (24) of the second filter head.
摘要:
A fluid filtration device is disclosed which includes a capsule housing having an upper housing portion defining an axial fluid inlet and a lower housing portion defining an axial fluid outlet, a filter assembly including an elongated mounting post and a plurality of filtration cells supported on the mounting post in axially spaced apart relationship, and structure operatively associated with the mounting post and the lower housing portion for effectuating axial compression of the filtration cells relative to the mounting post when the mounting post is engaged in the lower housing portion during assembly.
摘要:
A process for the manufacture of porous structures comprises forming a dry mixture comprising a component providing primary separation capability, a component providing green strength reinforcement capability and, a component providing binding capability and selected from the group consisting of thermoplastic and thermosetting polymers; delivering the mixture to a suitable surface and building a desired thickness thereof; densifying the mixture into the form desired for the porous structure; removing the densified porous structure from the surface; binding the component providing the primary separation capability by melting the mixture to a temperature of up to about 20.degree. C. higher than the melting point of any thermoplastic component providing binding capability. Porous structures (100, 110, 120, 125, 140, 175) according to the present invention comprise from about 70 to about 90 parts by weight of a component providing primary separation capability (61, 62); from about one to about 15 parts by weight of a component providing green strength reinforcement capability (64, 65); and, from about eight to about 20 parts by weight of a component providing binding capability (67, 68) and selected from the group consisting of thermoplastic and thermosetting polymers.
摘要:
A method is disclosed for forming a filter cartridge which includes the steps of providing a cylindrical filter element having a plurality of radially extending longitudinal pleats, engaging an outer periphery of the cylindrical filter element along a substantial portion of the length thereof, and simultaneously moving the plurality of radially extending longitudinal pleats into a laid-over spiraled configuration along the entire length of the cylindrical filter element to form a spiral pleated filter element. An apparatus is also disclosed for effectuating the disclosed method.
摘要:
Removable filter cartridge assemblies (10) for housings (28) having a removable member (101, 130) to provide access to the interior (102, 136) of the housing and an inlet (108, 134) and an outlet (109, 135) to and from the interior thereof (102, 136) comprising at least one filter cell (12) through which fluids are passed for filtration, the cell having a central aperture (18) therethrough for the passage of fluid, separate from the fluid within the housing; opposed disks of filtration media (16), spaced apart and defining upper (16U) and lower (16L) surfaces of the cell emanating radially from the central aperture; and, an outer peripheral edge (14) circumscribing the cell; first and second retainer ring members (22) securably disposed on the upper and lower surfaces of said filter cell, open to and concentric with the central aperture, said first retainer ring members being contiguous with the outlet of the housing; and lifting means (42, 50, 80, 90) communicable with one of the retainer ring members for movement of the filter cell into and out of the filter housing. The present invention also provides a device for lifting and carrying a filter cell (12) comprising retainer ring members (22); and a lifting device (42, 50, 80, 90) in communication with said retainer ring members, as well as a device for lifting and carrying a filter cell (12) comprising an outer peripheral edge (14) provided by said filter cell; and a lifting device (70) in communication with said outer peripheral edge. The present invention also provides methods for the assembly of a cell-type filter cartridge device disposed within a filter housing and a method for removing a filter cell cartridge assembly from a filter housing.
摘要:
A filter apparatus for use in filtering a fluid is provided. The filter apparatus has a plug-in, quick-connect cartridge. The filter apparatus has walls forming a first chamber and a second chamber. The filter apparatus also has a diaphragm having a first surface and having a second surface for separating the chambers. The diaphragm has an aperture with an inner surface for receiving the cartridge. The cartridge has a connector member for attachment to the diaphragm, and has a filter member for filtering the fluid passing between the chambers. The first and second chambers have respective inlet and outlet ports. The connector member has an upset portion which bears against the diaphragm first surface. The connector member also has an extended portion, which extends through the aperture. The extended portion has a groove, which has a snap locking ring that bears against the diaphragm second surface. The upset portion and the snap locking ring provide a rigid cantilever attachment of the cartridge to the diaphragm. The extended portion also has a second groove, which has an O-ring seal that bears against the inner surface of the aperture for preventing fluid flow past the snap locking ring.