JPH0753682Y2 - Inclined plate settling device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an inclined plate settling device for settling and separating suspended solids in wastewater in a settling tank, for example.

2. Description of the Related Art Generally, solid-liquid separation for separating suspended solids in wastewater is indispensable in wastewater treatment processes. Among them, sedimentation separation operation is particularly important in water supply and industrial water supply. First of all, it is widely used for sewage treatment and industrial wastewater treatment.

In recent years, a settling basin equipped with a slant plate settling device has become widespread, and attention has been paid to the downsizing of the settling basin and a significant improvement in the settling efficiency.

As such a slant plate settling device, conventionally, a frame, parallel vertical bars extending horizontally in at least two stages on the frame, and parallel to these vertical bars at a predetermined angle. One having a settling sloping plate which is rectangular when viewed from the front and which is passed in an inclined state has already been developed (see, for example, Japanese Utility Model Publication No. 63-7282).

In addition, horizontal vertical bars are vertically suspended at predetermined intervals between columns that face each other at the left and right ends of the sedimentation device, and inclined plates near the left and right ends of the sedimentation device are attached at both left and right ends. The width of the vertical slope becomes narrower as it gets closer to the section, and these settling inclined plates are sequentially passed to the horizontal rungs and the vertical rungs of a predetermined stage so that the protruding width of each of the settling inclined plates from the vertical rung is substantially constant. The upper edge or lower edge of each sinking slope plate is attached to the horizontal rail through the fittings, and the lower edge portion or upper edge portion of the sinking slope plate is attached to the vertical rail. The inclined plate settling device is already known (for example, see Japanese Utility Model Laid-Open No. 56-44807) Problem to be solved by the Invention However, in the former conventional inclined plate settling device, the upper edge of each settling inclined plate is On the back side of the side and the bottom edge Since the hook part is integrally provided and these hook parts are hooked on the parallel vertical rails, the settling inclined plate is attached. There is a problem that the slant plate vibrates and the wastewater to be treated is agitated, which lowers the wastewater treatment efficiency, and the hook part that is integrally provided on the slant plate is not sufficiently large in mechanical strength. In addition, high dimensional accuracy is required to manufacture the inclined plate with hooks so that the position of the hooks with respect to the vertical vertical bars does not shift. It had to be manufactured, which made it difficult to manufacture the inclined plate.

Further, in the latter conventional inclined plate settling device, the settling inclined plate is attached to the vertical rail by fixing it with screws one by one, which makes mounting of the settling inclined plate extremely troublesome and troublesome. was there.

The object of the present invention is to solve the above-mentioned problems of the prior art, and during operation of the sedimentation device, the inclined plates do not vibrate, especially at the left and right ends of the sedimentation device, and therefore the treated wastewater is not agitated. The solid-liquid is separated very quickly, the wastewater treatment efficiency is greatly increased, and the inclined plate and the hook are composed of separate parts, and the mechanical strength of the hook is sufficiently large, and the inclined plate can be manufactured easily. Besides being easy, the hook can be attached to the inclined plate with one touch,
There is an object to provide an inclined plate settling device having excellent workability.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has a structure in which at least two upper and lower columns are horizontally suspended between columns disposed at least at four corners and column columns opposed to each other on the left and right. It is equipped with horizontal crosspieces and a settling inclined plate that is parallel to these horizontal crosspieces via a fixture and is inclined at a predetermined angle and has a rectangular settling inclined plate when viewed from the front. Horizontal vertical bars are vertically stacked at predetermined intervals between opposing columns, and the inclined plates near the left and right ends of the sedimentation device become narrower in order as they approach the left and right ends. The settling inclined plates are sequentially passed to the horizontal rungs and the vertical rungs of a predetermined level so that the protruding width of each settling tilted plate from the vertical rungs is substantially constant. Part or lower edge is attached to the horizontal rail via the fixture In addition, in the inclined plate settling device in which hooks are attached to the lower edge portion or the upper edge portion of the same settling inclined plate, and these hooks are hooked on the vertical rails, the hooks are engaged with the rear surface. A strip-shaped mounting wall portion having a raised portion,
It is composed of a plurality of engaging claws which are connected to the lower edge of the hook and have a substantially U-shaped engaging portion when viewed from the front, and the engaging protrusions are provided upright with a gap therebetween and have detent protrusions. The engaging protrusion is inserted into an insertion hole formed at a predetermined position of the sinking inclined plate, whereby the hook is attached to the inclined plate, and a hook-shaped hooking portion as viewed from the front of the hook, A vertical bar is fitted into an inverted U-shaped recess formed by the facing wall of the inclined plate, and the inclined plate is fixed to the vertical bar;
The main point is the inclined plate settling device.

As the material of the above-mentioned settling inclined plate, it is preferable to use a material that is lightweight, has excellent corrosion resistance and is inexpensive, and for this, a synthetic resin such as polyethylene, polypropylene or polyvinyl chloride is used. Of these, it is preferable to use hard polyvinyl chloride.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

In this specification, front and rear, left and right are based on FIG. 5,
The front means the front side of the drawing sheet in FIG. 5, the rear means the back side, the left means the left side of the drawing, and the right means the right side.

First, referring to FIG. 1, the inclined plate settling device (10) of the present invention
Is a horizontal rail (3) horizontally suspended in three stages between the support columns (1) arranged oppositely at the four corners and a required intermediate position and the support columns (1) (1) facing each other on the left and right. 3) (3)
And a settling sloping plate (2) that is square when viewed from the front passed in parallel with these cross rails (3) (3) through fixtures (6) (7) and in a state of being inclined at about 60 °. It has and.

In this invention, horizontal vertical bars (4) are vertically suspended at predetermined intervals between the columns (1) (1) facing each other at both left and right ends of the settling device (10) in a multi-stage manner. Thus, the inclined plates (2) near the left and right ends of the sedimentation device become narrower in the vertical direction as they approach the left and right ends.

These settling inclined plates (2) are sequentially passed to the horizontal bars (3) (3) and the vertical bars (4) of a predetermined level, so that each settling inclined plate (2).
The projecting width from the vertical bar (4) is substantially constant.

In the middle part of the inclined plate settling device (10), the four corner portions (2a) of the settling inclined plate (2) are respectively attached to the cross rails (3) and (3) by the fittings (6) and (7). It is fixed. At the left and right ends of the settling device (10), the upper edge or the lower edge of each settling inclined plate (2) is attached to the fitting (6).
It is attached to the cross rails (3) and (3) via (7), and the hook (8) is attached to the lower edge portion or the upper edge portion of the sinking inclined plate (2). ) Is hung on the vertical rail (4).

The settling inclined plate (2) is made of hard polyvinyl chloride by vacuum / pressure forming or flat plate press forming. Further, all of the columns (1), the horizontal rails (3) and the vertical rails (4) are made of a rigid polyvinyl chloride pipe.

Here, details of the settling inclined plate (2) are shown in FIGS.

That is, in the same figure, the settling inclined plate (2) is provided with an annular reinforcing rib (13) at the peripheral portion of the settling inclined plate body (12) which is rectangular when viewed from the front and inclined about 60 ° when viewed from the side. , Two reinforcing vertical ribs (1) connecting the upper lateral rib (13a) and the lower lateral rib (13b) of the annular reinforcing rib (13).
4) are provided at a predetermined distance from each other. And between the side vertical ribs (13c) and the vertical reinforcing ribs (14) of the annular reinforcing rib (13), and two adjacent vertical reinforcing ribs (14).
Floc sinking depressions (1
An inclined surface part (16) for preventing flock deposits is provided at the lower end of (5). In addition, the upper lateral rib (13a) has a reinforcing convex portion (2) having a substantially horizontal cross section and protruding to the rear surface side of the rib (13a).
1) is provided over substantially the entire length of the horizontal rib (13a). Further, the vertical wall portion (17) is provided in series with the upper edge of the upper horizontal rib (13a) of the annular reinforcing rib (13), and At the lower edge of the lower lateral rib (13b) of the annular reinforcing rib (13), there are suspended both end portions (18a) (18a) and an intermediate bulging portion (18b) bulging toward the surface side in the middle thereof. Hanging wall (1
The lower settling slant plate (2) is provided between the vertical wall part (17) and the hanging wall part (18) of the settling slant plates (2) (2) that are arranged in a row and are arranged in two steps. ) Is formed so as to form a back flow passage gap (20) which rises along the back surface.

In addition, the settling slant plate (2) having a narrow vertical width at both left and right ends of the slant plate settling device (10) is, for example, a normal size settling slant plate (2) cut into a predetermined width, or a flat synthetic resin. Since it is enough to cut the plate to a predetermined width and use it,
The production of these inclined plates (2) is easy.

The details of the sinking slope plate attachments (6) and (7) are shown in FIG.
It is shown in FIG.

First, the slant plate mounting tool (6) shown in FIGS. 6 and 7 has two corner plates (2a) (2) on the front and rear sides of the slant plate (2) (2).
a) is fixed together on a horizontal cross rail (3).

The fitting (6) is made of a synthetic resin, has a substantially horseshoe shape when viewed from the front in which the inside is enlarged from the lower end opening, and is attached to a predetermined position of the cross rail (3) so as to be covered.
And a plate-like connecting portion (24) provided at an upper portion of the attaching portion (23) at a right angle to the attaching portion (23) and extending to the upper side and the front and rear sides, and at both ends of the plate-like connecting portion (24). These are provided with settling inclined plate fixing overhanging portions (25) (25) provided so as to respectively extend these.

Further, a positioning projection (27) is provided in a downward protruding shape at the center of the inner surface of the mounting portion (23), while positioning holes (28) are provided at predetermined intervals at the center of the upper surface of the horizontal rail (3). It is opened every other time. In addition, each overhanging part (2
A bolt hole (26) is drilled in the center of 5), while
A bolt hole (22) is also formed in the corner portion (2a) of each inclined plate (2).

In the inclined plate mounting member (6), the side wall lower end portions (23a) (23a) of the mounting portions (23) on both sides of the lower end opening have a spring action based on the elasticity of the material, and the mounting portion (23) A horizontal rail (3)
Then, when the crosspiece (3) is fitted over the lower end opening thereof, the lower end portions (23a) (23a) of the side walls of the mounting portion (23) are spread out against the elastic force of the material. The fitting (6) can be attached to the cross rail (3) with one touch. At this time, by fitting the positioning projection (27) of the fixture (6) into the positioning hole (28) of the horizontal rail (3), the fixture (6) can be positioned with respect to the horizontal rail (3). It is certainly done.

Then, in this state, the protrusions (25) on both sides of the fixture (6)
The corners (2a) (2a) of the two inclined plates (2) (2) on the front and rear sides are superposed on the (25), and the bolts (29) are fitted into these bolt holes (26) (22). By being inserted and tightened with a nut (not shown), the two inclined plates (2) and (2) are attached to the horizontal crosspiece (3) via one fixture (6).
Are fixed together.

Next, the inclined plate attachment (7) shown in FIG. 8 and FIG.
At the front edge or the rear edge of the settling device (10), the corner portion (2a) of one inclined plate (2) is fixed to a horizontal cross rail (3).

Here, the point different from the case of the attachment (6) is that a protrusion for fixing the settling inclined plate that extends the plate-like connecting portion (24) provided on the approximately horseshoe-shaped attaching portion (23) is provided. A portion (25) is provided, and the corner portion (2a) of one inclined plate (2) is superposed on the overhanging portion (25) and is fixed by tightening with a bolt (29) and a nut (not shown). There is a point to be.

The other points of the inclined plate attachment (7) of FIGS. 8 and 9 are the same as those of the attachment (6) of FIGS. 6 and 7 described above. Are denoted by the same reference numerals.

Details of the hook (8) are shown in FIGS. 10 and 11.

In the figure, the hook (8) is made of synthetic resin,
It is composed of a strip-shaped mounting wall portion (31) having two engaging protrusions (33) (33) on the back surface, and a hooking portion (32) connected to the lower edge of the strip-shaped mounting wall portion and having a substantially rectangular shape when viewed from the front. It is a thing. Each of the engagement protrusions (33) is composed of four engagement claws (34) which are erected with a gap (36) between them, and when the four engagement claws (34) are aligned with each other, the engagement protrusions (33) are provided at the tip. The taper is tapered toward the end, and a detent projection (35) is provided at a portion of each engaging claw (34) near the base end.

The hooks (8) can be attached to the inclined plate (2) with one touch by inserting the engaging protrusions (33) into the insertion holes (30) formed at predetermined positions of the sinking inclined plate (2). .

When the vertical bar (4) is fitted into the inverted U-shaped recess formed by the hooking portion (32) and the inclined plate (2), which are substantially rectangular in shape when viewed from the front of the hook (8), the inclination is increased. The upper end portion of the plate (2) is fixed to the vertical crosspiece (4).

According to the inclined plate settling device (10), the four corners (2a) of the settling inclined plate (2) are respectively attached by the fittings (6) and (7) in the middle part of the settling device (10). It is firmly fixed to the cross rails (3) (3).

Further, especially at the left and right ends of the settling device (10), a settling inclined plate (2) having a narrower vertical width is attached by means of the fittings (6) (7) and the hooks (8) to the cross rail (3).
Since it is firmly fixed to (3) and the vertical bar (4) of a predetermined level, these inclined plates (2) do not vibrate up and down during the operation of the sedimentation device (10). The wastewater to be treated is not agitated, and the solid-liquid is separated very quickly, and the efficiency of wastewater treatment is greatly increased.

It should be noted that, of the settling inclined plates (2) and (2) arranged in two steps, the two corners (2a) at the upper end of the lower inclined plate (2) and the two corners at the lower end of the upper inclined plate (2). By attaching the corners (2a) to the common fixtures (6) and (7), respectively, the intermediate bulge (18) between the vertical wall (17) and the depending wall (18) is attached.
b) and are opposed to each other, and a back flow passage gap (20) is formed between them.

Therefore, when the inclined plate settling device (10) is installed in, for example, a settling tank, as shown in FIG. 5, suspended solids in the wastewater are placed in two inclined plates (2) ( 2) Between the comrades, they settle and separate through a wide space,
The back flow that rises along the back surface of the lower sedimentation sloping plate (2) rises through the passage gap (20) between the upper and lower sloping plates (2) and (2), and solid-liquid is separated very quickly. It is done like this.

Further, since the inclined plate (2) and the hook (8) are formed by separate parts, the mechanical strength of the hook (8) is sufficiently large, and the inclined plate (2) has no hook (8) from the beginning. Since the structure is simple by that much, the inclined plate (2) can be easily manufactured.

In the above embodiment, the inclined plate settling device (10) is
The crosspieces (3) horizontally fixed in three steps between the pillars (1) arranged oppositely at the four corners and required intermediate positions and the pillars (1) (1) facing each other on the left and right. (3), but with the support (1) of the inclined plate settling device (10)
Need only be arranged in at least four corners, and the horizontal crosspieces (3) and (3) should be suspended between at least two upper and lower columns between the columns (1) and (1) facing each other on the left and right. It is a thing.

Effect of the Invention In the inclined plate sinking device according to the present invention, as described above, the hook attached to the sinking inclined plate is connected to the strip plate-shaped mounting wall portion having the engaging protrusion on the back surface and the lower edge thereof. The engaging protrusions are formed in a substantially rectangular shape when viewed from the front, and the engaging protrusions are formed by a plurality of engaging claws that are provided upright with a gap between them and that have detent protrusions. The hook is attached to the inclined plate by inserting the upright into the insertion hole formed at the predetermined position of the settling inclined plate, and the hook-shaped hook portion as viewed from the front of the hook and the facing wall portion of the inclined plate. Since the vertical bar is fitted in the inverted U-shaped recess formed by and the inclined plates are fixed to the vertical bar, the settling inclined plates at the left and right ends of the settling device are It is firmly fixed to the horizontal rail and the vertical rail of a predetermined level by the During operation, these inclined plates do not vibrate vertically, so that the wastewater to be treated is not agitated, the solid-liquid is separated very quickly, and the efficiency of wastewater treatment is greatly increased.

Also, since the slant plate and the hook are composed of separate parts, the mechanical strength of the hook is sufficiently large, and the structure of the slant plate is simple from the beginning because there are no hooks. It is only necessary to open it, and it is easy to manufacture the inclined plate, and the hook can be attached to the inclined plate with one touch by simply inserting the engaging protrusion of the hook into the insertion hole of the sinking inclined plate, which is very workable. The effect of being excellent.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a partial perspective view of a slant plate settling device according to the present invention, FIG. 2 is an enlarged front view of only the slant plate, FIG. FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 2, and FIG. 5 is an enlarged sectional view of an essential part of FIG. 1, showing the arrangement state of the settling inclined plate. FIG. 6 is an enlarged perspective view of the mounting portion of the sinking slope plate by the mounting tool,
FIG. 7 is an enlarged sectional view taken along the line VII-VII of FIG. 6, FIG. 8 is an enlarged perspective view of the mounting portion of the sinking inclined plate by another attachment, and FIG. 9 is an enlarged front view of the attachment of FIG. Fig. 10 is an enlarged perspective view of a sinking inclined plate mounting portion by a hook, and Fig. 11 is an enlarged sectional view taken along the line XI-XI in Fig. 10. (1) ... Posts, (2) ... Settling inclined plate, (3) ... Horizontal bars,
(4) ... Vertical rail, (6) (7) ... Mounting fixture, (8) ... Hook, (10) ... Slanting plate settling device, (30) ... Insertion hole, (3
1) ... Strip plate-shaped mounting wall portion, (32) ... Latching portion that is substantially rectangular when viewed from the front, (33) ... Engagement protrusion, (34) ... Engagement claw, (35)
… Detent projection, (36)… Gap.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadao Nomura 3-13-2 Tomigaoka, Nara City, Nara (56) References Actually published 56-44807 (JP, U) U) Actual public Sho 63-7282 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A column (1) arranged at least at four corners.
And a horizontal crosspiece (3) horizontally fixed to at least two stages between columns (1) (1) that face each other on the left and right
(3) and fittings (6) on these cross rails (3) (3)
And a column-shaped settling inclined plate (2) seen from the front, which is passed through in parallel with each other through (7) and is inclined at a predetermined angle. ) (1) Horizontal vertical bars (4) are vertically suspended at predetermined intervals in a multi-stage manner, and the inclined plates (2) near the left and right ends of the sedimentation device are closer to the left and right ends. The settling inclined plates (2) are made narrower in order, and these settling inclined plates (2) are sequentially passed to the horizontal bars (3) (3) and the vertical bars (4) of a predetermined level, so that each settling inclined plate (2). The projecting width of the vertical crosspiece (4) from the vertical crosspiece (4) is substantially constant, and the upper edge or the lower edge of each sinking inclined plate (2) is attached to the horizontal crosspiece (3) (3) via the fittings (6) (7). ), And a synthetic resin hook (8) is attached to the lower edge portion or the upper edge portion of the sinking inclined plate (2). Is, these hooks (8)
In the inclined plate settling device in which the hooks are hooked on the vertical bars (4), the hooks (8) include a strip plate-shaped mounting wall portion (31) having engaging protrusions (33) on the back surface, and The engaging projections (33) are formed upright with a gap (36) between each other and are formed in a hook shape (32) in a substantially C shape when viewed from the front, which is continuous with the lower edge. ) Having a plurality of engaging claws (34), and the engaging protrusions (33) are inserted into the insertion holes (30) formed at the predetermined positions of the sinking inclined plate (2), whereby the hooks are formed. (8) is attached to the inclined plate (2),
When viewed from the front of the hook (8), the hooking portion (32) has a substantially rectangular shape.
And a vertical bar (4) is fitted in an inverted U-shaped recess formed by the opposite wall portion of the tilt plate (2), and the tilt plate (2) is fixed to the vertical bar (4). Plate sedimentation device.