| 摘要 |
A labyrinth seal incorporated in liquid filtration apparatus to prevent migration of unfiltered liquid carrying solid contaminants and air which may be entrapped in such liquid past the lateral edges of a filter media carried on an endless conveyor into an underlying chamber for receiving filtered liquid. The seal includes a pair of low friction strips and an underlying seal support fixedly attached in superposed relation along both interior sides of the tank and extending between positions where the conveyor enters and exits the unfiltered liquid. The seal further includes one layer in a first embodiment, and two, superposed layers in a second embodiment, of fluid-impervious material affixed to each lateral edge of the conveyor chain or belt about the entire periphery thereof, and movable therewith. The outermost lateral edge portions of the media are engaged and move slidingly between opposing surfaces of the stationary strips, as are edge portions of the upper movable layer in the second embodiment, and edge portions of the single (or lower) movable layer are engaged between the lower strip and upper surface of the seal support.
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