Apparatus and method for securing underdrain filter block
AssigneeXylem Water Solutions Zelienople LLC
InventorsDean T. Berkebile, Daniel E. Bruce, Christopher J. Ball
Life of this patent
Estimating the term…
Abstract
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
Claims24
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed, the block comprising:
- a top wall;
- a pair of side walls extending from the top wall;
- a bottom wall extending between the pair of side walls;
- and
- a transverse wall extending from one of the pair of side walls to the other of the pair of side walls,
- wherein the top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion, the lower portion including a grout chamber positioned between the bottom wall and the transverse wall, and further wherein at least one of the bottom wall and said side walls contains an opening.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed, the block comprising:
- a top wall;
- a pair of side walls extending from the top wall;
- and
- a bottom wall extending between the pair of side walls,
- wherein the top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion, the lower portion including a plurality of grout chambers defined by a grid-like structure positioned on a bottom surface of the bottom wall, the bottom surface of the block containing a plurality of air relief openings that extend into each of the plurality of grout chambers.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed, the block comprising:
- a top wall;
- a pair of side walls extending from the top wall;
- a bottom wall extending between the pair of side walls;
- a plurality of ribs extending circumferentially along the pair of side walls and the bottom wall;
- a plurality of wall segments extending between the plurality of ribs to define a plurality of grout chambers.
A method of installing an underdrain filter block comprising:
- positioning an underdrain filter block adjacent to a filter floor, the underdrain filter block having a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side wall to the other of the pair of side walls, the underdrain filter block also includes a grout chamber positioned between the bottom wall and the transverse wall, the grout chamber including at least one opening defined by at least one of the bottom wall and one of the pair of side walls;
- providing grout along the pair of side walls and the bottom wall such that grout extends into the at least one opening.
A method of assembling an underdrain filter block comprising:
- providing a first piece comprising a top wall, a pair of side walls extending from the top wall, and a bottom wall extending between the pair of side walls;
- providing a second piece that defines interior walls;
- inserting the second piece into the first piece;
- securing the first piece to the second piece.
Dependencies are inferred from the claim text.