| 摘要 |
An adsorption filter is provided by a tank which contains an adsorbent material that is capable of removing impurities from a fluid stream. Filtering may be done by the mass transfer zone principle of adsorption. The tank is formed with an elongated outer shell which is closed at one end and open at the other. An elongated core with an open upper end and a fluid opening at its lower end is centered in the open shell by a funnel that has a centrally located rod and a conical outer wall that contacts the top of the shell adjacent its open end which allows adsorbent material to be poured into the space between the shell and the core. The length of the shell is preferably at least two times as long as the mass transfer zone of the adsorbent material while the fluid opening at the lower end of the core is preferably on the order of three fourths as long as the mass transfer zone. A cap that has a port in fluid communication with the space between the shell and the core is formed by a ring of screened apertures. The second port is formed through the cap which is aligned with the open upper end of the core. The cap otherwise closes off the open end of the shell after the tank is filled with absorbent and the funnel is removed. The cap is provided with female threads that allow the tank to be screwed into the outlet pipe in a receptacle in a self-supporting manner which allows contaminated fluid to flow into the tank through one of the ports and out the other of the ports.
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