Seperator tank
View Patent ↗A separator tank for separating and trapping contaminants in rainwater and runoff is disclosed. According to one embodiment of the present invention, the separator tank comprises a container having a bottom wall, side wall, and top wall defining an internal chamber; an insert located inside of the internal chamber, the insert comprising a weir defining an intake area between the weir and the side wall; and a round-edged orifice positioned within the intake area; an inlet conduit for introducing an influent liquid into the intake area; wherein the weir is positioned such that the weir induces the influent liquid to flow in a swirling motion within the intake area. According to another embodiment of the present invention an insert for a separator tank is disclosed. The insert includes a weir defining an intake area for receiving an influent liquid; and a round-edged orifice positioned within the intake area.
1. A separator tank, comprising:
a container having a bottom wall, side wall, and top wall defining an internal chamber;
an insert located inside of the internal chamber, the insert comprising:
a weir defining an intake area between the weir and the side wall; and
an orifice positioned within the intake area, said orifice having a vertically rounded edge connecting a larger outside diameter with a smaller inside diameter;
an inlet conduit for introducing an influent liquid into the intake area; and
wherein the weir is positioned such that the weir induces the influent liquid to flow in a swirling motion within the intake area.
2. The separator tank of claim 1 , wherein the weir is curved to form a substantially circular intake area.
3. The separator tank of claim 1 , wherein the weir is offset from the center line of the inlet conduit.
4. The separator tank of claim 1 , wherein the insert further comprises a drop tube in fluid communication with the orifice and extending into the lower chamber.
5. The separator tank of claim 4 , wherein the drop tube comprises at least one vertical vane to dissipate the swirling motion as the influent liquid flows through the drop tube.
6. The separator tank of claim 4 , wherein the drop tube comprises a base formed by two wings for directing the influent liquid into the lower chamber.
7. An insert for a separator tank, the insert comprising:
a weir defining an intake area for receiving an influent liquid; and
an orifice positioned within the intake area, said orifice having a vertically rounded edge connecting a larger outside diameter with a smaller inside diameter.
8. The insert of claim 7 , wherein the weir is curved to form a substantially circular intake area.
9. The insert of claim 7 , wherein the insert further comprises a drop tube in fluid communication with the orifice and extending below the insert.
10. The insert of claim 9 , wherein the drop tube comprises at least one vertical vane.
11. The separator tank of claim 9 , wherein the drop tube comprises a base formed by two wings.
12. An insert for a separator tank, comprising:
a weir defining an intake area for receiving an influent liquid;
an orifice positioned within the intake area; and
a drop tube in fluid communication with the orifice, the drop tube comprising:
a base formed by two wings, wherein the two wines extend beyond the circumference of the drop tube.
13. The insert of claim 12 , wherein the weir is curved to form a substantially circular intake area.
14. The insert of claim 12 , wherein the drop tube further comprises at least one vertical vane.
15. The insert of claim 12 , wherein the drop tube further comprises a back wall and front wall.
16. The insert of claim 12 , wherein the two wings are angled downward.
17. An insert for a separator tank, comprising:
a weir defining an intake area for receiving an influent liquid;
an orifice positioned within the intake area; and
a drop tube in fluid communication with the orifice, the drop tube comprising:
at least two vertical vanes disposed in the drop tube, each vertical vane having a length, wherein the length of at least one of the vertical vanes differs from the length of at least one of the other vertical vanes.
18. The insert of claim 17 , wherein the weir is curved to form a substantially circular intake area.
19. The insert of claim 17 , wherein the drop tube comprises a base formed by two wings.
20. The insert of claim 19 , wherein the drop tube further comprises a back wall and front wall.
21. An insert for a separator tank, comprising:
a weir defining an intake area for receiving an influent liquid;
an orifice positioned within the intake area; and
a drop tube in fluid communication with the orifice, the drop tube comprising:
a base formed by two wings;
a back wall; and
a front wall; said back wall and said front wall connecting said drop tube to said base; and wherein the arc length of said back wall is greater than the arc length of said front wall.