JP2598011Y2 - Scum scraping device for oxidation ditch - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial applications] This invention is an oxidation
The present invention relates to a switch scum scraping device .

[0002]

2. Description of the Related Art An oxidation ditch is a pond having an oblong plane and a partition wall extending in the longitudinal direction of the pond. In the pond, sewage is caused to flow in one direction, and aeration is performed therebetween. .

[0003]

[Problem to be solved by the invention] Oxyday
In Shonditch , a device for efficiently scraping scum generated in large quantities was not installed.

The present invention has been made to solve such a problem, and has as its object to enable scum to be efficiently gathered to a specific area which is a removal area.

[0005]

According to a first aspect of the present invention, there is provided an oval peripheral wall.
From the sewage that circulates with a partition wall inside
The scum floating on the water surface is swept to a specific area by orbiting motion
A scum scraping device for moving the scum along the partition wall.
Endless guide rail and drive means
A moving object that makes a revolving motion along the guide rail
Through a horizontal axis set horizontally from the moving body to the surrounding wall
To be able to swing back and forth
Cantilever support type with the lower part going up and down on the water surface
With the smallest ponds width
The tip so that it passes inward of the surrounding wall corresponding to the
While being defined short, at the tip of the scum shifter,
A sheet plate that moves while constantly contacting the peripheral wall is mounted.
It is characterized by having been done .

[0006]

As described above, the combination of the guide rail, the moving body, the driving means, and the scum shift allows the scum to be efficiently gathered to the removal area.

[0007]

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 one embodiment of the present invention. Here, 1 is the oxidation
The whole oxidation is shown in the same oxidation ditch 1
Has an elliptical peripheral wall 2 and a partition wall 3 therein. In the oxidation ditch 1, the waste water 4 circulates clockwise in the direction of the arrow in FIG.

A gantry 5 is fixed to the peripheral wall 2 of the oxidation ditch 1. The gantry 5 includes a main body having a U shape as viewed from above and an auxiliary frame. The gantry 5 is L
It is manufactured using a letter-shaped channel material. A closing plate 7 which is L-shaped when viewed from above and reaches a water level 6 or lower is attached to the gantry body.

A vertical column 8 is erected from the gantry main body, and a horizontal member 9 is laid horizontally via upper ends of these vertical columns 8. There are two horizontal members 9 including pulleys 10,
10 are attached.

A cylinder (drive means) 12 is mounted on the auxiliary frame, and the rod of the cylinder 12 extends downward. Reference numeral 13 denotes a weir which is horizontally rotatable between the gantry 5 and the partition wall 3 at an angle, and is rotatable.
Supported by

Three levers 15 are attached to the rotating shaft 14. The cylinder 12 is attached to one lever 15. The second lever 15 has a balancer 16
Is installed. And the pulley 1 is on the remaining lever 15
One end of a wire 17 provided through 0 is connected. The weir 13 and the balancer 16 are displaced by approximately 180 °.

The wire 17 operates in the same manner as the weir 13, that is, when the weir 13 goes down, the other end goes down.
The other end goes up when it goes up. At the other end of the wire 17, an attracting cylinder 20, which is provided to be able to move up and down in a collecting section constituted by the closing plate 7 and the peripheral wall 2, is suspended via an auxiliary suspending tool 21.

The guide tube 20 is guided up and down along a fixed tube 22 provided below the water surface.
Is to induce scum. The fixed cylinder 22 is connected to an outlet cylinder 23 that communicates with the outside of the pond. In addition, two floats 24 are attached to the outer periphery of the invitation tube 20, and the float 24 has a tapered lower portion, and buoyancy is slowly applied when entering the water surface, and the invitation tube 20 is lowered. It is configured so that braking at the time becomes gentle.

The operation of the scum removing device will be described. The scum S flowing in the oxidation ditch 1 is described below.
Passes through the water surface below the weir 13 because the weir 13 is in the raised state. And it goes around by aeration (illustration omitted). When the cylinder 12 operates and the weir 13 falls below the water level, the scum S is blocked and the scum S
Is flowed obliquely along the weir 13 and is guided into the scum collecting section.

The scum S comes on the water surface partitioned by the closing plate 7, and is attracted into the fixed cylinder 22 through the attracting cylinder 20 which is lowered below the water surface by the operation of the cylinder 12. The scum S from inside the fixed cylinder 22 is the lead cylinder 2
It is discharged outside the pond through the inside of 3. When the weir 13 rises, the attracting cylinder 20 also rises, and the attraction of the scum S is prevented.

The water surface 6 has a high state and a low state as indicated by a virtual line in FIG. In addition, on the rotating shaft 14,
A scum guide plate 26 is attached, and when the weir 13 rises, it descends to the surface of the water to guide the scum S out of the scum collection unit and passes it. It is configured to be invited into the department.

The scum scraping device will be described. The device includes a guide rail 30 provided on the outer periphery of the partition wall 3. This guide rail 30, as shown in FIG.
It is an I-shaped member fixed by a plurality of brackets 31 so as to be horizontal. The guide rail 30 has an elliptical shape as shown in FIG. 1 when viewed in a plan view. The guide rail 30 has a plurality of rollers 32 formed by cutting a U-shaped channel material with a lip into a short shape. 33
… So that it can run smoothly and stably.

The upper roller 33 is large, and the roller 33 has a sprocket 3 on its side.
4 is provided. The sprocket 34 is rotationally driven by a sprocket 36 and a chain 42 provided on a side of a motor 35 having a speed change function.

A motor 35 is fixed on a table 37, and a pump 38 driven by the motor 35 is also mounted on the table 37.
Fixed on top. The pump 38 has a pipe 40 extending below the water surface 6 and sucking up water in the water. In addition,
The motor 35 is driven using a solar cell 41 erected from the table 37 as a power supply.

The upper surface of the moving body 32 is directly facing the peripheral wall 2.
The support plate 43 extends horizontally in the pond width direction which is an angular direction.
Has been fixed. The support plate 43 includes a bracket 4
A rocking plate 45 is mounted to be able to rock back and forth through 4...
Is installed. This scum shifter 46 is used for moving body 3
2 extends in a cantilever manner from below, and the lower part sinks in the water surface 6 and rakes in the scum S floating on the water surface 6 and swings when approaching the aeration device or the scum removal device. Work to escape and go beyond this.
The moving body 32 and the scum shifter 46 are shown in FIG.
Near the inside of the surrounding wall 2 where the pond width is the smallest at the right end
The length is specified so that it can pass through.

A horizontal water supply pipe 49 is fixed on the support plate 43 via a bracket 48. A pump 38 communicates with the pipe 49, and water from the pump 38 through the pipe 49 is blown out from the tip of a front nozzle 50, and thereby scum S on the water surface 6 is blown in a circumferential direction to remove scum. It works to bring it to the device. A weight 51 stabilizes the self-propelled performance of the entire apparatus.

The operation of the scum scraper will be described. When the motor 35 is operated by the solar cell 41, the upper roller 33 is driven to rotate via the sprocket 36, the chain 42, and the subrocket 34. As a result, the roller 33 rolls on the guide rail 30 and the moving body 3
2 moves along the guide rail 30. The moving body 32 is in a vertically stable posture by the weight 51, and the scum shifter 46 scrapes the scum S on the water surface 6 toward the scum removing device.

The water supplied by the pump 38 is supplied to the nozzle 5
, And operates so that the scum S can be blown off before the scum shifter 46. The outside is made of rubber
A seal plate 52 is attached, and the sheet plate 52 is always
The scum S moves outside while contacting the inner surface of
I squeeze it away from the side.

[0024]

[Effect of the Invention] Since the present invention is configured as described above, scum can be scraped and removed efficiently.
In particular, the scum shift is guided on the surrounding wall
Instead of the upper surface of the surrounding wall and can not move around
Because of the degree of civil engineering finish, there are irregularities
If the entire device is completely hindered by running obstacles
Therefore, the entire device, such as a moving body, runs smoothly.
Trouble without causing abnormal wear to the rollers
Fewer devices can be provided. On the other hand, this kind of oki
In the situation ditch, as shown in FIG.
Pond width is usually not constant.
It has a different width than the diversion channel.
A roller is attached to the end and the upper surface of the surrounding wall is configured to roll.
Not only complicates the structure itself, but also causes trouble
Cause.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of the scum removing device.

FIG. 3 is a side view showing an interlocking mechanism of the scum removing device.

FIG. 4 is a sectional view showing a self-propelled scum collection device.

[Explanation of symbols]

 2 peripheral wall 3 partition wall 6 water surface 30 guide rail 32, 33, 34, 35 drive means 46 scum shift S scum

Claims (1)

(57) [Scope of request for utility model registration] 1. An oval peripheral wall having the same circumference
Floating from circulating sewage with partition walls in the wall
To rake the scum to a specific area by orbiting motion.
A cam scraping device, which is provided endlessly along the partition wall.
Guide rail and the drive
Mobile object that makes a revolving motion along the
Swinging back and forth via a horizontal axis set to face
It is mounted so that it can move and the lower part is
Cantilever support type scum shifter that goes up and down on the surface
The scum shift corresponds to the minimum pond width position
The tip is short enough to pass inward of the surrounding wall.
And at the tip of the scum shifter,
A sheet board that moves while contacting is installed
A scum scraper for oxidation ditch characterized by
Place.