Separator

Details Separator Separator

1998-03-11

2001-02-06

Lithgow, Thomas M. (Department: 1724)

Liquid purification or separation

Structural installation

Geographic

C210S121000, C210S242100, C210S154000, C210S156000, C210S302000, C210S304000, C210S305000, C210S311000

Reexamination Certificate

active

06183633

ABSTRACT:

This invention relates to a separator.
More particularly, the invention relates to a separator for separating material from a moving fluid. The material may comprise a solid body whether buoyant or non-buoyant. Alternatively, the material may comprise a fluid or fluid-like material such as oil, scum, grease, fats and other similar substances. The expression also is intended to cover materials such as heavy fluids or sludges which are heavier than the moving fluid.
More particularly, the invention relates to a separator for separating bodies from a fluid.
In storm water drainage systems, it is desirable to remove debris from the storm water before it is discharged into rivers, lakes and the like. Floating debris can be a particular problem because accumulation of floating debris in rivers and streams badly degrades the environment. It is desirable therefore to try to remove debris, particularly floating debris, from the storm water and this is usually accomplished by means of traps which basically attempt to trap floating particles from the storm water by the use of meshes, grates or the like but these components tend to clog up thereby reducing their effectiveness.
An object of the invention is to provide a separator which at least partially overcomes the problem noted above. The separator of the invention may find application in other areas where it is necessary to separate bodies from fluids.
According to the present invention there is provided a separator for separating material from a fluid, said separator comprising:
an inlet;
a separating chamber in fluid communication with the inlet;
a holding chamber;
deflecting means for deflecting material entrained in or moving with fluid entering the separating chamber from said inlet towards said holding chamber, and
an outlet for permitting flow of fluid from which said material has been removed from the separating chamber.
In accordance with a preferred embodiment of the invention, the deflecting means comprises a boom which is mounted generally transversely or obliquely relative to the direction of flow of the fluid.
In this form of the invention, the boom may comprise a buoyant body. The body may be cylindrical in shape or have a curved frontal face and mounting means is provided to mount the body for rotational movement as the level of fluid increases and decreases.
Preferably further, the buoyant body is arranged to be about three-quarters submerged when fluid is flowing through the separator.
Preferably further, the buoyant body rests on a bottom floor of the separator body when no fluid or insufficient fluid is flowing therethrough to float the boom. In this case, the boom can operate to deflect non-floating bodies towards the second chamber which comprises a collection hopper.
The invention also provides a separator for separating bodies from a fluid, the separator having a generally rectangular separator body the separator body being formed with an inlet and an outlet characterised in that the inlet is located at or adjacent to a lower corner of the body.
Preferably the inlet is inclined to the major axis of the rectangular body at an angle. Preferably the angle is in the range 15° to 45°. Preferably, the angle is 22.5°. Alternatively, the boom, inlet and outlet may be transverse to the body but the boom is provided with a curved, inclined frontal face.
The invention also provides a separator for separating bodies from fluid, said separator having a separator body through which flows in use a fluid having bodies entrained therein from an inlet to an outlet, and deflecting means to deflect bodies in said fluid away from said outlet, characterised in that the deflecting means comprises a boom which is in cross-section a quadrant shape.
In the specification, the expression “material” is intended to embrace solid bodies whether floating or not, floating layers of fluid materials such as oils, grease, scum or the like, and layers of fluids or fluid-like substances which are carried with the moving material near or at lower layers thereof.
The invention will now be further described with reference to the accompanying drawings, in which:
FIG. 1
is a schematic plan view of a separator;
FIG. 2
is a schematic sectional view along the line
2
—
2
;
FIG. 3
is a cross-section along the line
3
—
3
;
FIG. 4
is a side view of the deflector plate taken along the line
4
—
4
;
FIG. 5
is a side view partly in section along the line
5
—
5
;
FIG. 6
is a sectional view along the line
6
—
6
;
FIG. 7
shows a modified separator;
FIG. 8
is a side view of the deflecting plate;
FIG. 9
is a fragmentary view along the line
9
—
9
;
FIG. 10
is a cross-sectional view along the line
10
—
10
;
FIG. 11
is a plan view of the alternative deflecting plate;
FIG. 12
is a schematic plan view of an alternative embodiment;
FIG. 13
is a schematic view of a boom for the embodiment of
FIG. 12
;
FIG. 14
is a schematic cross-sectional view along the line
14
—
14
;
FIG. 15
is a schematic sectional view along the line
15
—
15
;
FIG. 16
is a schematic sectional view along the line
16
—
16
;
FIG. 17
is a schematic plan view of an alternative embodiment;
FIG. 18
is a schematic view of the boom of the embodiment of
FIG. 17
;
FIG. 19
is a fragmentary side view of the embodiment of
FIG. 17
;
FIG. 20
is a further fragmentary side view of the embodiment of
FIG. 17
;
FIG. 21
is a schematic side view of another embodiment of the invention;
FIG. 22
is a plan view of the embodiment shown in
FIG. 21
;
FIG. 23
is a fragmentary perspective view of the boom of the embodiment shown in
FIGS. 21 and 22
;
FIG. 24
is a schematic sectional view along the line
24
—
24
;
FIG. 25
is a schematic view showing the boom with different water level lines marked thereon;
FIG. 26
is a graph showing the inclination of the water level lines as a function of water level;
FIG. 27
is a schematic side view of a further embodiment of the invention;
FIG. 28
is a schematic plan view of the embodiment of
FIG. 27
;
FIG. 29
is a schematic plan view of a further embodiment of the invention;
FIG. 30
is a schematic side view of the further embodiment;
FIG. 31
is a schematic sectional view along the line
31
—
31
;
FIG. 32
is a schematic side view of a further embodiment of the invention; and
FIG. 33
is a schematic plan view of the arrangement shown in FIG.
32
.


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Copy of PCT International Search Report 3 Pages.
Copy of PCT Written Opinion 5 Pages.

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