JP2606630Y2 - Scum scraping device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a scum scraping device.

[0002]

2. Description of the Related Art For example, in a final sedimentation basin of a sewage treatment plant, scum floats on the water surface, and it is necessary to appropriately remove the scum out of the pond. For this reason, for example, a fixed trough is provided between the side walls of the rectangular pond, and a weir is provided in front of the trough, which rises and falls on the water surface. The scum is removed through the inside of the trough by swallowing. The weir is driven separately, but one problem is to effectively swallow the scum on the water surface when the weir sinks.

[0003]

[Problems to be solved by the present invention] By the way, the scum on the water surface has been left as it is, and has been attracted into the trough by the attraction by the sinking operation of the weir, so that the swallowing is more effective. This prevented water purification.

[0004]

In order to solve the above-mentioned problems, the invention according to the first aspect of the present invention is to provide a wastewater treatment facility such as a rectangular sedimentation basin and a sand basin with a scum removing device between the opposed side walls. The scum removal device is provided with damming means that goes up and down at the water surface, and elimination means that attracts scum and water beyond the damming means and removes it to the other. A scum scraping device that scrapes in the direction of the scum removing device and removes the scum with the scum removing device , wherein the equipment is arranged so as to be parallel to the side wall.
Guide rails installed only on one side of the
And a traveling body that can reciprocate along the
Moving means and the center of rotation facing the opposite direction of both side walls
A scum shift plate rotatably provided on the traveling body.
The scum gathering plate is vertically suspended below the water surface.
With the lower part submerged in the direction of the damming means
The scum in the scraping position
So that a non-scraping posture that can be raised
The position of the scum shift plate in the forward direction is
The front hit that kicks in the direction of retreat facing the slab is
On the other hand, in the retreat direction position of the scum
Kick in the direction to move forward against the scum approaching plate in the raked position
There is a rear side contact to drop, and the running body has a scum
A lifting position holding means for holding the plate in a non-scraping position is provided.
And push the damming means to the traveling
Characterized in that a weir pushing means is provided
You.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. 1 to 3 show an embodiment of the present invention. This embodiment is an example of a final sedimentation basin (or a first sedimentation basin), wherein 1 is a sedimentation basin, 2 is left and right side walls, 3 is an end wall orthogonal to the side wall 2, and the sedimentation basin 1 is It is rectangular when viewed from above. 2
1 is a water surface.

Reference numeral 41 denotes a trough. The trough 41 has a square gutter shape, and has a lower front portion and a slightly higher rear portion. . The communication trough 42 is connected to another trough (not shown).

A front portion of the trough 41 is lower than the water surface 21, and a rubber seal 43 is fixed thereon, and a rotary shaft 44 is provided thereon. The rotating shaft 44 has bearings 45 fixed to the left and right front surfaces of the trough 41.
A weir member 46 (FIG. 1) which is rotatably supported by (FIG. 3) and has an oval cross section through the rotating shaft 44.
Are mounted to be able to swing up and down.

The weir member (damming means) 46 is of a hollow type capable of floating by itself, and both ends of the weir member 46 and the trough 4 are provided.
The space between the two is sealed by a rubber seal (not shown). In addition, at the front of the weir member 46, a U-shaped receiving cam 47 is specially attached. The cam 47 has a front end facing the water surface 21 or lower, and a mountain portion reaching the water surface 21 or higher. The cam 47 is located only at the left end when the scum removing device 40 is viewed from the front.

On the other hand, an H-shaped guide rail (guide) 22 is fixed along the longitudinal direction on the left side of the upper surface of the pond. A sprocket 24 and a chain 25 are configured so as to be reciprocated by a drive source 23 before and after the guide rail 22.

A traveling body 27 is provided on the guide rail 22 so as to reciprocate by rollers 26.
The traveling body 27 projects from one side of the pond in a cantilevered manner toward the inside of the pond.
Is provided. A scum shift plate 29 is attached via this hinge 28 so as to be able to swing back and forth.

The scum shift plate 29 extends over the entire width of the pond, and a magnet 30 is provided at a desired position thereof. The magnet 30 is fixed when the scum shift plate 29 swings rearward (upward posture). Holding means) 3
1 can be adsorbed. Further, the swing to the rear, a low traveling body 27 is traveling in the scum removing apparatus 40 side
This is done by hitting the lasher (front side) 32.

When the scum shift plate 29 is retracted in the direction of the anti-scum removal device 40 in a state of being attracted to the fixed magnet 31 (non-scraping posture) , a backing plate (rear contact) 33
, It comes off and keeps a vertical state (screw posture) under its own weight.

Further, a pressing roller 35 is provided on the traveling body 27 via a stay 34, and the pressing roller 35
It advances in the direction of the scum removal device 40 together with the traveling body 27, rides on the cam 47, and acts to hold the dam member 46 below the water surface. As a result, the scum floating on the water surface passes over the weir member 46 and is drawn into the trough 41. This scum flows in one direction of the trough 41, flows into the adjacent trough through the communication trough 42, and further flows into the terminal pit through another trough, and is eliminated.

When the pressing roller 35 is retracted, the weir member 46 is lifted by itself, and the scum is not attracted. The reciprocating motion of the chain 25 is performed by a switch 36 fixed to the side surface of the guide rail 22. In addition, the scum shift plate 29 has a width slightly up and down in order to follow the fluctuation of the water level.

Further, a float may be provided at a free end of the scum shift plate 29 to generate buoyancy.

[0016]

Effects of the invention] This invention is like the above, scum removal
In the direction of the removal device and lifts up on the water surface in the opposite direction
A traveling body equipped with a scum shift plate that is
A scum removal device that enables the guide rail to move freely.
The damming means at the end
In particular, a traveling body with a scum
Cantilevered by guide rails located on one side
However, there is a big feature. This species, a rectangular precipitate
Sewage treatment facilities such as ponds and sedimentation ponds are limited to the one pond shown.
In most cases, a large number of rows and columns are arranged in one treatment plant.
What is usually arranged in rows is as follows. In these cases, Ikema
It is divided by the side wall, but the width of the upper wall of the side wall is
It is necessary to make the space as narrow as possible in order to use the space effectively
It is common to configure a scum scraping device there.
In general, guide rails are usually installed on each side wall facing one pond.
And mount the vehicle on this guide rail.
To be able to advance and retreat. But configure like this
And a scum scraping device is also configured in the pond adjacent to the one pond.
And two guide rails are laid on one side wall.
And the running structure moves forward and backward on these guide rails.
When considering the construction, the upper wall
It is very difficult for managers and workers to come and go here.
Dangerous. In particular, the pond has already been established and the upper wall is narrow.
If so, the danger is high,
The design of the scum scraping device is also greatly restricted
Become. On the other hand, scum is a floating substance,
Load is not large and may be more than expected
Because it is not available, a very simple device is sufficient.
A scum that straddles a pair of left and right guide rails as described above
In a scraping device, there is a limit even if it is simplified. More than
In consideration of this, the interlocking of the scum removal device has also been simplified.
This is what we achieved, and according to this invention,
All of the above-mentioned problems have been solved.
The sludge scraping device can be installed in a sewage or water supply pipe to a treatment plant, a sand basin in a treatment plant, a channel, or the like, in addition to the sedimentation basin.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a scum scraping device showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Settlement pond 2 Side wall 21 Water surface 22 Guide rail 23,24,25 Means for reciprocatingly driving a traveling body 27 Traveling body 28 Hinge which becomes a center of rotation 29 Scum shift plate 31 Elevation attitude holding means (fixed magnet) 32 Front contact (roller) 33 Back side contact (contact plate) 35 Weir pressing means (pressing roller) 40 Scum removing device 41 Elimination means 46 Damming means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C02F 1/40 B01D 21/24

Claims (1)

(57) [Scope of request for utility model registration] 1. A sewage treatment facility such as a sedimentation basin or a sand basin having a rectangular shape is provided with a scum removing device between opposing side walls. Elimination means for attracting scum and water that have passed over the damming means and for excluding the scum and water to the other. The scum on the water surface is raked in the direction of the scum removal device to be eliminated by the scum removal device. Scum scraping device, wherein only one side of the facility is parallel to the side wall
Move along the installed guide rail and the guide rail.
Traveling body that can move backward and means for reciprocating the traveling body
And rotatable about the center of rotation facing the opposite direction of both side walls
A scum shift plate provided on the traveling body,
The cam shift plate hangs vertically and the lower part sinks below the water surface.
Of the scum traveling in the direction of the damming means
Raised posture and raised backward in the direction to retract from the raked posture
Scum
At the position of the plate in the forward direction, it faces the scum shift plate in the scraping posture
Front kick up in the direction of retreat
On the other hand, in the retreat direction position of the scum
The rear side that kicks down in the direction to move forward facing the scum shift plate
A hit is provided, and the running body is
A rising posture holding means for holding the posture is provided.
In addition, the traveling body pushes down the damming means when moving forward
A squam scraping device comprising a weir depressing means .