| 摘要 |
A leaching chamber is configured to be coupled in series to another such leaching chamber located forward of the chamber and to yet another such leaching chamber located rearward of said leaching chamber. The leaching chamber comprises a conduit extending about a n axis to define an axially extending cavity. The conduit includes an axially front section havi ng an overlying wall and a rear section having an underlying wall. The overlying wall is configured t o overlie the underlying wall of the forward chamber when the chambers are coupled together. The underlying wall is configured to underlie an overlying wall of the rearward chamber when said chambers are coupled together. A projection extends from the front section of the conduit. A pock et is located at the rear section of the conduit. The projection is configured to be received by the pocket of the front chamber, and the pocket is configured to receive the projection of the rear chamber. A notched structure extends radially inward from the front section and has a notch tha t is spaced from the front edge of the front section. The notched structure is configured to capture in the notch the underlying wall of the forward chamber when the chambers are coupled together.
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