| 摘要 |
This disclosure relates to an encapsulated filter unit, a system and a method of filtering fluids. The filter unit has a generally cylindrically shaped, membrane filter body with a plurality of filter elements. An anti-telescoping connecting element at each element end joins the filter elements end to end and coaxially to one another. The joined elements are housed by a relatively rigid outer shell. A filter head at each end of the unit enables connection of the units to one another while capping the unit ends. The shell comprises a barrier tube encased by a first helically wrapped layer of a first material, and each filter head includes an adapter encapsulated by a first hoop wrapped layer of a second material. The respective layers abut one another such that a continuous, generally uniform, relatively rigid composite outer wrapped layer is formed for effectively encasing the unit. The adapter has a slot located on an interior peripheral surface for receiving a sealing member. Upon engagement of the sealing member with the slot on one side and the barrier tube, or alternatively the connecting element, on the other side, a flexible seal between the adapter and barrier tube (or connecting element) is effected during filter unit operation. A second hoop wrapped layer of a third material is formed about both the first helically wrapped layer and the first hoop wrapped layer for effectively and aesthetically encapsulating the unit.
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