JP2603973Y2 - Sludge scraper - Google Patents

Description

[Detailed description of the invention]

[0001]

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

[0002]

2. Description of the Related Art For example, in the first / final sedimentation basin of a sewage treatment plant, sludge settles from the inflowing sewage and accumulates at the bottom of the pond. These are scraped in one direction by a scraper. It is configured to flow into a pit that is recessed at one end of the pond bottom, and is suction-removed by a pump. The scraping in this case is performed by a sludge scraping device.

[0003]

In the conventional sludge scraping apparatus, a pair of left and right guides (guide rails) is provided for each pond through both side walls of the pond, and the traveling body is provided along these guides. In addition to being equipped with a scraper that scrapes to the lower part on both sides of the traveling body, not only the equipment becomes very large and it is expensive to manufacture, but also the transportation and construction becomes large, Losses were large in various fields, such as high operating costs. For this reason, a single track type sludge scraping device was devised,
In the case of
It is a system that drives the traveling body back and forth with
In such a method, the wire rope is continuously driven in one direction.
I can not translate it, so I will go back and forth on the wire rope
A means for driving is required, and
Replacement means is required, which is a cause of cost increase
Or cause trouble.
Measures were desired.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 has a rectangular shape when viewed from above.
Is the pond width direction and the direction corresponding to the other side is
The longitudinal direction corresponds to the sludge scraping direction and the pond
At the bottom of the pit is a recessed pit where the sludge is scraped off.
It is installed on the bottom wall of the pond.
, So that the guide that gives a linear guide extends over the pit
The guide is fixed to the
A traveling body equipped with a scraper
In rotatably in the sludge raking device being kicked set, the drive
The means of movement is around the vertical pong in two places before and after on the center line in the pond width direction
First and second wheels so as to rotate
The first wheel corresponds to the pit on the scraping side
The second wheel is provided on the side that returns and returns after being scraped,
Both wheels are driven in a scraping direction parallel to the running body
Endless circulation drive that is driven in the direction of return and return
Material is 履設so driven to circulate in a substantially horizontal plane, the free
The end circulating drive member is provided with an engaging portion that accompanies it.
On the other hand, the horizontal direction corresponding to the pond width direction of the traveling body
On one side as the engaging portion moves in the scraping direction.
While the engaging portion is engaged and the engaging portion rotates around the first wheel
First Kakarigo受 surface set which is adapted the engagement is disengaged at
On the other side in the left-right direction of the traveling body,
As the engaging portion moves in the direction of returning and returning, the engaging portion
While the engaging portion orbits around the second wheel.
A second engagement receiving surface is provided so that the engagement can be released.
It is characterized by being . According to a second aspect of the present invention, in the first aspect, the first and second engagement receiving surfaces are formed by one lateral groove. According to a third aspect of the present invention, in the first aspect, the first and second engagement receiving surfaces are opposed to each other in the pond width direction.
They are formed by corresponding projections that are separated in the left-right direction and also separated from each other in the front-rear direction .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. 1 to 4 show an embodiment of the present invention. This embodiment is an example of the final sedimentation basin (or the first sedimentation basin) in the sewage treatment facility.
The same applies to other individual facilities in the sewage treatment facility or to the sewage treatment facility. Here, 1 is one of the sedimentation basins, and the sewage from the front equipment flows in from the inflow port opened on the left side of FIG. 1, and the sludge is settled, while the supernatant water is the overflow weir provided on the right side of the figure. Discharged by drainage means.

[0006] The sedimentation basin 1 is slightly longer in the left and right directions in FIG. 1 and is rectangular when viewed from above. Here, the long side of the rectangle is the side wall 2 and the short side is the end wall 3. Both walls
The direction corresponding to between 2 and 2 is the pond width direction, which is orthogonal to this direction.
Direction, that is, the direction parallel to the side wall 2
Return direction. The bottom wall 4 is inclined slightly downward to the left in FIG. 2, but may be a horizontal plane. A pit 5 is provided at one bottom of the pond for removing the inflowed sludge by a pump. Additional pits may be provided on the opposite side.

In the center of the settling basin 1 between the pond widths , a guide 7 made of deformed H steel is fixedly provided as a single track so as to follow the longitudinal direction. It is long overhanging. On both sides of the upper part of the guide 7, upwardly protruding portions 7a are provided. Above both ends in the longitudinal direction of the guide 7, brackets 13 for mounting the first and second wheels 8 are fixed to face each other, and the pits 5 in the scraping direction are fixed.
The upper first wheel 8 has a vertical axis on a driving source provided on the pond.
Always in one direction (when viewed from Ikegami right times through the Jo of the drive shaft 6
Forcibly driven in the opposite direction) . Second e
The eel 8 is also set on the vertical axis near the end in the return direction.
Have been killed. There is a chain between both wheels 8,8
Endless circulating drive material 9 is hung and always in one direction (from Ikegami
That when is adapted to be circulated continuously driven in a clockwise direction).

[0008] Reference numeral 20 denotes a traveling body, which is shaped like a rectangular saucer. The traveling body 20 includes a roller 21 and side rollers 2.
2, the roller 21 rolls along the upper surface of the guide 7, and the side roller 22 comes into contact with the protrusion 7 a of the guide 7 from inside and rolls.

A bearing 2 is provided between the front and rear of the traveling body 20.
4 is fixed, and a rotary shaft 25 is provided on the
, A scraper 26 is mounted to be able to swing back and forth.
The scraper 26 is configured to bend back and forth, and a lower portion thereof is engaged with a rotation stopper 27 protruding from the side surface of the traveling body 20. The rotation stopper 27 is attached to the traveling body 20 so as to freely rotate around a horizontal axis, and a tip thereof is provided with a groove.
6 are slidably fitted.

The first side wall 2 has a thickness of 28 per first.
However, a second contact 29 is projected on the bottom wall 4 on the other side. When the scraper 26 hits the first contact 28, the scraper 26 bends in a V-shape so as to project in the return direction as shown in FIG. 2, and when the scraper 26 hits the second contact 29, the scraper 26 It changes from a square shape to a single-plate vertical state.

The traveling body 20 is provided with a lateral groove-like groove 30 in the middle in the front and rear directions, and is open upward and left and right. The left and right surfaces of the groove 30 are surfaces facing the direction of the pit 5 as the first engagement receiving surface 31, and the other left and right surfaces of the groove 30 are facing the pit direction as the second engagement receiving surface 32. Surface. In this embodiment, these engagement receiving surfaces 31, 32
Are formed in one groove 30.

On the other hand, the endless circulating drive member 9 is provided with a downwardly projecting shaft, and the lower end thereof has an engaging portion 33 which is a roller.
Is provided. The engagement portion 33 is movably fitted into the groove 30 from above.

In operation, when the drive source is operated and the drive shaft 6 rotates, the endless circulating drive member 9 always rotates continuously in one direction. As a result, the engaging portion 33 pushes the first engagement receiving surface 31 in the direction of the pits 5 (scrolling direction),
The traveling body 20 moves for scraping. The scraper 26 is vertical and the sludge flows into the pit 5. When the engagement portion 33 reaches the lateral end of the first wheel 8 shown in FIG. 1, the engagement portion 33 rolls along the groove 30 in the direction of the opposite second engagement receiving surface 32. The traveling body 20 comes to the extreme end position when the engaging portion 33 is rotated by 90 ° more than the above, and the traveling body 2 contacts the second engagement receiving surface 32 while being further rotated by 90 °.
0 is responsive to the reverse return and return direction. The traveling body 20 moves as it is.

On the other hand, when the traveling body 20 comes to the end on the pit side, it hits the first contact 28 and consequently bends to the rear side and stops. As a result, the scraper 26 is separated from the bottom of the pond, so that the sludge is not scraped.

At the end of the return and return direction, the scraper 2
6 corresponds to the second contact 29, and the scraper 26, which has been shaped like a letter, becomes a single vertical plate. as a result,
Get ready to rake. On the other hand, the engagement portion 33 is provided on the second engagement receiving surface 3.
From 2, it comes into contact with the first engagement receiving surface 31 through the groove 30, and drives the traveling body 20 in the scraping direction . This cycle is repeated. A through-hole is provided at the bottom of the bearing 24, and an inner scraper 35 protruding downward from the rotating shaft 25 is provided from the through-hole so as to be rotatable along with the rotating shaft 24, and sludge accumulated on the guide 7 is provided. Can be sequentially eliminated. Further, a roller scraper 37 is provided in front of the roller 21 so that the roller 21 is not laid on the sludge.

FIGS. 5 to 7 show another embodiment. In this embodiment, the first and second engagement receiving surfaces 31 and 32 are formed separately from each other on the left and right sides of the traveling body 20 instead of forming the first and second engagement receiving surfaces with one groove. Have been. As shown in FIG. 5 and FIG.
As shown in FIG. 7, it moves from the state of engagement with the first engagement receiving surface 32 to engage with the next second engagement receiving surface 32. Second engagement receiving surface 32
The same is true for the relationship between According to this embodiment, when the engaging portion 33 is disengaged from the engagement receiving surfaces 31, 32, the movement of the traveling body 20 acts so as to stop immediately.

In each of the above embodiments, the scrapers may be provided in a plurality of stages before and after. Further, the scraper may not be a vertical plate, but may be a plate portion having a lower portion inclined so as to be able to scoop up, and an upper portion having a gentle inclination angle so as to once hold the scooped sludge. In this case, when it comes to the pit, it is configured to be lowered downward by the stopper to remove sludge.

[0018]

[Effect of the invention] As described above, the invention circulates around the vertical axis.
An engaging portion is protruded from an endless circulating drive member driven by a ring, and
A first engagement receiving surface and a second engagement provided on the traveling body side by the joining portion;
The receiving surface is driven alternately in the scraping direction and the return / return direction.
Which is configured to, device whole is inexpensive very simplified
And construction is simplified. Also, to simplify the structure
The possibility of trouble occurrence is reduced. In addition,
The above effect is more remarkable because of the
become. 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 plan view of a sludge scraping device showing one embodiment of the present invention.

FIG. 2 is a side sectional view thereof.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a plan view showing another embodiment.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a plan view showing a state where an engagement portion is disengaged from an engagement receiving surface.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Settling basin 2 Side wall 3 End wall 4 Bottom wall 5 Pit 7 Guide 8 First and second wheels 9 Endless circulating drive material 20 Running body 26 Scrapers 31, 32 First, second engagement receiving surface 33 Engagement portion

Claims (3)

(57) [Scope of request for utility model registration] 1. A rectangle corresponding to one side of a rectangle as viewed from above
The direction is the pond width direction and the direction corresponding to the other side is the sludge scraping direction.
Direction and the bottom of the pond is dirty.
On the bottom wall of a treatment pond with a pit where mud is scraped off
In the longitudinal direction on the bottom wall,
A fixed guide is installed so that the guide
This guide includes a scraping
A traveling body equipped with a motor is provided so that it can reciprocate by driving means.
In the sludge scraping device, the driving means comprises a pond.
It will rotate around the vertical axis at two places before and after the center line in the width direction
First and second wheels, one of which is the first wheel
The second wheel corresponds to the pit on the scraping side.
Are provided on the side of returning and returning after scraping.
Driven in the scraping direction parallel to the running body and then returned
Endless circulating driving material driven in the direction of return
The endless circulating drive material is installed to be circulated in the
Has an engaging portion projecting therewith, while
On one side in the horizontal direction corresponding to the pond width direction in the row,
The engaging portion engages as the engaging portion moves in the scraping direction.
While the engaging portion orbits around the first wheel,
A first engagement receiving surface for disengaging is provided.
The other side of the traveling body in the left-right direction is
The engaging part engages with the
While the part orbits around the second wheel,
That the second engagement receiving surface is provided so as to be disengaged.
Characteristic sludge scraper. 2. The sludge scraping device according to claim 1, wherein the first and second engagement receiving surfaces are formed by one lateral groove. 3. The first and second engagement receiving surfaces correspond to a pool width direction.
The sludge scraping device according to claim 1, wherein the sludge scraping device is formed by projections that are separated in the left-right direction and also separated from each other in the front-rear direction .