Liquid purification or separation – Filter – Movable medium
Reexamination Certificate
2001-05-15
2003-05-20
Upton, Christopher (Department: 1724)
Liquid purification or separation
Filter
Movable medium
C210S402000, C210S488000
Reexamination Certificate
active
06564948
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a solid-liquid separating apparatus for separating solid matter, raw contaminants, etc. from liquid of a solid-liquid mix.
2. Prior Art
Solid-liquid separating apparatus are used in, for example, raw contaminant dehydration treatment devices, etc. installed in kitchen sinks. Such solid-liquid separating apparatus separates the solid matter and liquid from water-containing raw contaminants produced as a mixture of solid matter and liquid by mixing raw contaminants discharged from the kitchen with water and pulverizing this mixture.
One of such solid-liquid separating apparatuses is described in Japanese Patent Application No. H11-133089 (Laid-Open (Kokai) No. 2000-317693) filed by the inventor of the a present application.
This prior art solid-liquid separating apparatus will be described with reference to
FIGS. 11 and 12
.
The solid-liquid separating apparatus
10
is substantially comprised of a strainer
12
, a casing
24
and a scraper
20
.
The strainer
12
is in a cylindrical shape by way of arranging a plurality of flat-plate-form circular ring members
14
adjacent each other with specified gaps between the circular ring members
14
.
The casing
24
has an accommodating section
26
that accommodates the strainer
12
. The accommodating section
26
is divided by the strainer
12
into two regions: an internal region B that is inside the strainer
12
and an external region C that is outside the strainer
12
. An intake port
28
that introduces a mixture of solid matter and a liquid is formed in the external region C, and an outlet port
30
that discharges to the outside the liquid that passes between the circular ring members
14
and advances into the internal region B is formed in the internal region B.
The scraper
20
includes flat-plate-form protruding elements
22
. Tip ends of the protruding elements
22
advance into the gaps between the circular ring members
14
. The scraper
20
is moved along the outer circumferential surfaces of the circular ring members
14
so that solid matter adhering to the end surfaces (which are flat surfaces and may also be called the side surfaces) of the circular ring members
14
is removed.
In operation, the strainer
12
acts as a filter. In other words, the liquid
18
passes through the gaps between the stacked circular ring members
14
and advances into the internal region B, and the solid matter
16
that is larger than the gaps is deposited on the outer circumferential surfaces of the circular ring members
14
. Some of the solid matter
16
that can advance into the gaps adhere to the end surfaces of the circular ring members
14
and cannot advance into the internal region B. As a result, the solid matter and liquid are separated.
The liquid
18
that has advanced into the internal region B is discharged to the outside of the casing
24
via the outlet port
30
. The solid matter
16
adhering to or deposited on the circular ring members
14
is scraped away by the scraper
20
and discharged to the outside of the casing
24
via the discharge opening
34
that is opened in the casing
24
. Since the solid matter
16
deposited or adhering on the outer circumferential surfaces and end surfaces of the circular ring members
14
is scraped away by the scraper
20
each revolution of the strainer
12
, no clogging would occur; and solid-liquid separation is continuously performed.
The space of the gaps between the end surfaces of the respective circular ring members
14
that make up the strainer
12
is determined based upon the size of the solid matter that is to be separated from the liquid. More specifically, if it is desired to separate even solid matter
16
of a small size so that the proportion of solid matter contained in the liquid
18
following the separation is reduced and the quantity of contaminants in the liquid
18
is thus reduced, then the spacing of the gaps between the circular ring members
14
is narrowed. For the opposite case, the spacing of the gaps between the circular ring members
14
is widened to some extent.
FIGS. 13 through 15
show the solid-liquid separating apparatus
10
in a concrete manner. The solid-liquid separating apparatus
10
comprises the strainer
12
, the casing
24
, the scraper
20
and a driving device
36
that rotationally drives the strainer
12
.
The strainer
12
is formed into a cylindrical body by stacking sideways a plurality of circular ring members
14
with gaps between these circular ring members
14
. The circular ring members
14
consist of two types of ring members: flat-plate-form first circular ring members
14
a
, and flat-plate-form second circular ring members
14
b
. The second circular ring members
14
b
have the same external diameter as the first circular ring members
14
a
, and a plurality of outer projections
38
(in
FIG. 13
, three outer projections
38
) are formed at specified angular intervals on the outer circumferential surface of the second circular ring members
14
b.
More specifically, the strainer
12
is formed in a cylindrical body. This cylindrical strainer
12
is obtained by stacking a plurality of the respective circular ring members
14
a
and
14
b
side by side with specified gaps between the respective circular ring members
14
a
and
14
b
. A specified number of first circular ring members
14
a
(for instance, a single first circular ring member
14
a
in
FIGS. 14 and 15
) are interposed between two second circular ring members
14
b.
Furthermore, spacers
44
are fitted over first stays
42
that pass through through-holes
40
formed in the respective circular ring members
14
a
and
14
b
and integrally connect all of the circular ring members
14
a
and
14
b
. Thus, the spacers
44
are used as a means for setting the spacing of the circular ring members
14
a
and
14
b
. The thickness of the spacers
44
constitutes the size of the spacing of the gaps between the respective circular ring members
14
a
and
14
b.
Spokes
46
of a Y-shape, for instance, are formed so as to be connected to the inner edges of the circular ring members
14
a
and
14
b
; and a rotating shaft
48
is installed in the center of these spokes
46
. Both ends of the rotating shaft
48
are rotatably supported on the casing
24
. At least one end of the rotating shaft
48
protrudes to the outside of the casing
24
, and this end is rotationally driven by the driving device
36
. The strainer
12
is thus rotated in the direction indicated by the curved arrow in FIG.
13
.
The second circular ring members
14
b
which have the outer projections
38
on their outer circumferential surfaces are arranged so that the outer projections
38
form the ribs
50
on the outer circumferential surface of the strainer
12
. Thus, the ribs
50
extend in the axial direction of the strainer
12
. In other words, when the strainer
12
is viewed from one end thereof, the outer projections
38
of one second circular member
14
b
is positioned directly behind the outer projections
38
of the next second circular ring member
14
b
so that the ribs
50
are formed by these outer projections
38
. As a result, a plurality of ribs
50
that extend parallel to the axis of the strainer
12
are formed on the outer circumferential surface of the strainer
12
. Since the first circular ring members
14
a
that have no outer projections
38
are interposed between the second circular ring members
14
b
, spaces are formed in the ribs
50
.
The ribs
50
push and transfer the separated solid matters
16
to the discharge opening
34
along the inner surface of the tubular accommodating section
26
.
The strainer
12
is installed inside the tubular accommodating section
26
so that the axis of rotation of the strainer
12
, i.e., the rotating shaft
48
that is connected to the strainer
12
, is oriented in a horizontal direction. The openings at both ends of the strainer
12
are closed off by a pair of opposite inside wall surfaces of the tubular accommodating
Izumi Products Company
Koda & Androlia
Upton Christopher
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