New Filtration Chamber
A newly invented filtration chamber is constructed of cast iron panels, which material the inventor claims is an improvement over the usual construction of stone, brick or concrete, the inner surfaces of the iron being enamaled so that the tendency to become coated is reduced to a minimum and that the surfaces can be cleaned at a minimum expense. The edges of the metal panels can be readily machined and the flanges along these edges drilled so that the panels can be bolted together with simple packing strips between them and water tight joints thus secured. As these panels can all be of the same size for any particular plant, very few variations of construction will be necessary according to the inventor.
In the accompanying illustrations, Fig. 1 is a side elevation with a portion of a side wall omitted. Fig. 2 is a plan of one side, a portion of the cover being broken away. Fig. 3 is a partial end elevation, a portion of the outer wall being broken away. Fig. 4 is a section on the line 4-4 of Fig. 2 on a larger scale. Figs. 5 and 6 are sections on the lines 5-5 and 6-6 of Fig. 1 respectively on a larger scale. Fig. 7 is a plan, of a portion of false bottom. Fig. 8 is a section showing a modified construction of false bottom.
The bottom panels 1 and 2 are attached to the side panels 3 and rear end panels 4 by means of bolts, and the bottom panels rest on the base 5 which may he of masonry, concrete or any other desirable construction. All the outside panels including the bottoms, are preferably provided with stiffening ribs 6 and 7 and edge ribs 8 through which the bolts 9 extend, which bolts unite the panels into a watertight structure. As shown in Figs. 4 and 6, a false bottom rests on the bottom panels and consists of panels 10 having deep ribs 11 and shallower ribs 12 which permit free flow of water between the ribs 11, the panels being so positioned that these ribs 11 are at right angles to the outlet chamber.
The false-bottom panels 10 are preferably also provided with ribs 14 and 15 on their upper sides and with holes 16 to permit the passage of the liquid to be filtered. A partition 17 is also formed of similar panels and divides the water chamber 18 from the filter chamber 19. A flanged plate 20 extends between this partition and the other wall 22 of the water chamber and divides the water chamber into upper and lower sections. Connections 23 and 24 for the liquid to be filtered are attached to the wall 22. some alKive amt the others below this dividing plate 20. As shown in Fig. 1, the bottom panels 1 may be extended to connect to this partition 22.
Extending longitudinally of the filter chamber 19 and resting in a notch 25 in the partition 17 is a trough 26 which is preferably provided with adjustable side plates 27 whose upper edges are in the same horizontal plane. While hut one trough is shown, it will be understood that any desired number may be employed. The upper edges of the side plates 27 of this trough are lower than the upper edges of the sides of the filter chamber, the water chamber and the partition between them. Stay holts 33 may he used between the upper edge of the partition 17 and the outer wall 22.
Water or other liquid enters the upper part of the water chamber 18 through the connections 23 and after filling it, flows along the trough 26 and evenly over its edges to the filter bed in the chamber 19. After passing through this filter bed it reaches the holes 16 in the false bottom through which it flows to the spaces between the ribs 11 and then passes through the openings 34 in the bottom of the partition 17 to the lower part of the water chamber 18 and out through the connections 24. This flow may be reversed to scour the filter bed.
To pass air through the filter bed, the side panels 3 are used with air mains 36 to which a supply pipe 37 may connect. Cover plates 50 may be used if desired, as shown in Fig. 2.
In Fig. 8 is shown another construction of false bottom, which consists of panels having corrugated plates 40 provided with holes 41, longitudinal ribs 42, edge ribs 43 and 44 and transverse air pipes 45 having discharge openings 46. The water can flow through the openings 47 in the ribs 44. These panels connect to the panels of the sides in the same manner as the flat floor panels shown in Fig. 6.
The filtration chamber is the invention of John W. Flower, Detroit, Mich., who is the assignor by Mesne Assignments to Michigan Valve Foundry ami Engineering Company, Detroit, Mich. The patent number is 1,457,514.