JPH07115015B2 - Scum skimmer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention removes scum floating on the water surface of a settling basin by utilizing the moving force of the flight of a sludge attractor to make a pipe scum skimmer upstream and downstream. Tilted to the side alternately or arbitrarily,
It is about the scum skimmer to collect.

[Conventional technology]

The scum skimmer in the sedimentation basin uses a pipe scum skimmer with a scum recovery hole formed on one outer circumferential surface in the longitudinal direction.
This pipe scum skimmer is tilted forward to collect scum floating on the water surface together with water on the water surface.

This pipe scum skimmer is generally tilted electrically or manually. In the case of electric drive, the opening / closing operation angle of the pipe scum skimmer is limited to a predetermined angle. In the case of manual operation, the operation is performed by a worker on a regular basis or depending on the amount of floating scum.

Also proposed is a method of automatically tilting the scum skimmer and recovering the scum using the moving force of the flight of a sludge attractor installed in the sedimentation basin without using other power.

[Problems to be Solved by the Invention]

When the worker tilts the pipe scum skimmer, there is a drawback that the number of workers is too much, and it is necessary to automate the manual operation. This requirement is strong even in existing equipment, and it is desired that existing equipment can be easily modified.

In order to solve such a problem, a method of automatically opening and closing the scum skimmer by electric and hydraulic operations has been proposed, but this method requires a separate energy source and control. There is a point.

Furthermore, when using the movement power of the flight of the sludge attractor to automatically tilt the scum skimmer and collect the scum,
There is a problem that a large amount of water is discharged together with scum floating on the water surface due to the tilt of the pipe scum skimmer. In addition, in this method, even if scum floating in the upstream of the pipe scum skimmer can be collected, if scum downstream in the pipe scum skimmer or even a large amount of scum is floating, efficient collection is possible. It was difficult.

INDUSTRIAL APPLICABILITY According to the present invention, the tilting direction and time of the pipe scum skimmer can be arbitrarily selected by the arrangement of the striker, and the scum upstream and downstream of the pipe scum skimmer and a large amount of scum can be efficiently collected by suppressing the water discharge amount. The purpose is to provide a scum skimmer.

[Means for Solving the Problems]

In order to achieve the above object, the scum skimmer of the present invention comprises:
A forward striker and a reverse striker of the pipe scum skimmer are projected in different positions on the flight attached to the predetermined position of the main chain of the sludge attractor installed in the sedimentation pond.
A forward rotation lever and a reverse rotation lever, each of which is formed in a V-shape and operated by abutting the striker, are respectively provided on the forward rotation shaft and the reverse rotation shaft so as to project from the forward rotation shaft and the reverse rotation shaft. The gist is that the moving shafts are connected to the tilted pipe scum skimmer via the forward rotation link mechanism and the reverse rotation link mechanism, respectively.

[Action]

The forward rotation striker and the reverse rotation striker, which are projecting at different positions on the flight of the sludge attractor, are brought into contact with the V-shaped forward rotation lever and the reverse rotation lever, respectively. Rotate the rotation axis. This allows
The forward rotation shaft and the reverse rotation shaft are for forward rotation,
The pipe scum skimmer connected via the reverse rotation drive lever, rod, and lever is selectively tilted to the upstream side, the downstream side, or the neutral position to collect and remove the floating scum.

[Examples] Hereinafter, the scum skimmer of the present invention will be described based on illustrated examples.

In the figure, 1 is a sedimentation basin with the required size and shape.
A sludge scraper 2 is arranged in the settling tank 1 in the longitudinal direction or in any direction.

This sludge attractor 2 has a large number of flights 2 in two parallel main body chains 22a, 22b suspended on a sprocket wheel.
3 are arranged at regular intervals or at arbitrary intervals. Flight 23 scoops scum floating on the water surface to the pond end side, to the scum removal position side where other pipe scum skimmers are installed, and scrapes sludge settling at the pond bottom to the discharge port. A forward rotation striker 3a of the pipe scum skimmer 5 is provided on any one of the flights 23, and a reverse rotation striker 3b of the pipe scum skimmer 5 is provided on the other flight 23 with different positions.

In the settling basin 1, a rotation shaft 4c for forward rotation, which is supported by bearings 4a and 4b at both ends so as not to interfere with the operation of the flight 23 of the sludge attractor 2, is erected, and A pipe-shaped reverse rotation shaft 4d is rotatably fitted into the rotation shaft 4c.

Each of the forward rotation shaft 4c and the reverse rotation shaft 4d has two levers formed in a V shape at a required angle.
b and the reverse rotation levers 41a, 41b project downward, and the V-shaped forward rotation levers 40a, 40b and the reverse rotation levers 41a, 41b are provided.
One of the ends of the normal rotation striker 3a or the reverse rotation striker 3b selectively comes into contact with the forward rotation levers 40a, 40b and the reverse rotation levers 41a, 41b using the moving force of the flight 23.
The forward rotation shaft 4c and the reverse rotation shaft 4d are rotated via the.

The forward rotation levers 40a and 40b are the forward rotation striker 3a.
In addition, the reverse levers 41a and 41b are the reverse striker 3
Adjust the positional relationship so that it is operated in b. In this case, the forward rotation levers 40a, 40b and the reverse rotation levers 41a, 4b
When 1b is in the position shown in FIG. 3, the strikers 3a and 3b (in the case of the forward rotation levers 40a and 40b, the striker is used).
3a, in the case of the reverse rotation levers 41a, 41b, if the striker 3b) comes, the strikers 3a, 3b contact the forward rotation levers 40a, 40b and the reverse rotation levers 41a, 41b, and when the levers reach the position, When the disengagement / forward rotation levers 40a, 40b and the reverse rotation levers 41a, 41b are in the positions shown in or in FIG. 3, the strikers 3a, 3b move the forward rotation levers 40a, 4b.
The strikers 3a, 3b, the forward rotation levers 40a, 40b, and the reverse rotation levers 41a, 41b are designed so as not to contact the 0b and the reverse rotation levers 41a, 41b.

The rotation shaft 4c for forward rotation includes the drive lever 42, the rod 45 and the lever.
It is connected to the pipe scum skimmer 5 through a forward rotation link mechanism consisting of 47, while the reverse rotation shaft 4d is a drive lever.
It is connected to the pipe scum skimmer 5 via a reverse link mechanism composed of 43, a rod 46 and a lever 48.

Both ends of the pipe scum skimmer 5 are tiltably supported at required positions of the sedimentation basin 1 via support rollers 6a, 6a, 6a of bearing stands 6,6, and one or more scum recovery ports are provided on the outer peripheral surface thereof. 5H is provided, and a forward rotation lever 47 and a reverse rotation lever 48 are provided at one end of the pipe scum skimmer 5. The pipe scum skimmer 5 is provided with a lever 7 that is manually operated, that is, detached.

In the figure, 8 is a floating weir having floats 81 at both ends, which floats and sinks following the surface of the water. The floating weir is provided parallel to the upstream side of the pipe scum skimmer 5. It is provided. As shown in FIG. 2, this float 81 has a tapered inner surface of the sedimentation basin 1 so that the floating scum on the water surface naturally flows into the scum skimmer due to the water flow flowing into the pipe scum skimmer 5. The scum flowing and riding along the tapered surface of the float 81 does not flow to the bearing portion at the end of the pipe scum skimmer 5 and is reliably guided to the scum discharge port 5H.

Although the floating weir 8 and the fixed weir 9 are provided on the upstream side of the pipe scum skimmer 5 in the above-described embodiment, they may be provided on both the upstream side and the downstream side.

The operation of the scum skimmer configured as described above will be described.

FIG. 4 (1) shows a state in which the pipe scum skimmer 5 is in the neutral position (reference position), and FIG. 4 (2) shows a state in which the pipe scum skimmer 5 tilts upstream to collect scum. (3) shows the state where the pipe scum skimmer 5 is returned to the neutral position, and (4) shows the state where the pipe scum skimmer 5 tilts to the downstream side to collect the scum. )
[Fig. 3] is an explanatory diagram showing a state in which the pipe scum skimmer 5 has returned to a neutral position.

Now, when the flight 23 moves in the direction of the arrow by driving the sludge attractor 2 from the neutral position in Fig. 4 (1) and the forward rotation striker 3a acts on the forward rotation lever 40b, the pipe scum skimmer 5 moves upstream. Tilt. At this time, the lever for reverse rotation
41a and 41b interlock with this and swing to the downstream side. further,
When the forward rotation lever 40b swings, the forward rotation striker 3a is disengaged from the forward rotation lever 40b, and the tilting of the pipe scum skimmer 5 is stopped. ((2) in FIG. 4) As a result, the scum floating on the upstream side flows into the pipe scum skimmer 5 and is collected.

When the next flight 23 moves in the direction of the arrow and the reverse rotation striker 3b acts on the reverse rotation lever 41a, the pipe scum skimmer 5 tilts in the opposite direction and returns to the neutral position. At this time, the normal rotation levers 40a and 40b are interlocked with this and swing to the downstream side to return to the neutral position. (Fig. 4 (3)) When the next flight 23 moves from the neutral position of Fig. 4 (3) to the direction of the arrow by driving the sludge attractor 2, and the reverse striker 3b acts on the reverse lever 41b. The pipe scum skimmer 5 tilts to the downstream side. At this time, the reverse lever 41
The a and 41b oscillate to the downstream side in conjunction with this. Further, as the reverse rotation lever 41b swings, the reverse rotation striker 3b is disengaged from the reverse rotation lever 41b, and the tilting of the pipe scum skimmer 5 is stopped. ((4) in FIG. 4) As a result, the scum floating on the downstream side flows into the pipe scum skimmer 5 and is collected.

When the next flight 23 moves in the direction of the arrow and the forward rotation striker 3a acts on the forward rotation lever 40a, the pipe scum skimmer 5 tilts in the opposite direction and returns to the neutral position. At this time, the reverse rotation levers 41a and 41b are interlocked with this and swing to the downstream side to return to the neutral position. (FIG. 4 (5)) Table 1 shows the operation of the scum skimmer and the positional relationship between the forward rotation lever and the reverse rotation lever, and Table 2 shows the relationship between the striker and the forward rotation lever and the reverse rotation lever.

This operation is sequentially repeated to collect scum from the upstream side and the downstream side of the pipe scum skimmer 5. The forward rotation striker 3a and the reverse rotation striker to the flight 23 are collected.
By adjusting the pitch and combination of the arrangement of 3b, it is possible to arbitrarily set the time and number of tilts of the pipe scum skimmer 5 to the upstream side or the downstream side.

〔The invention's effect〕

According to the present invention, the scum can be recovered by tilting the pipe scum skimmer to the upstream side and the downstream side by utilizing the moving force of the flight of the sludge attractor. At that time, the tilting time and the number of times of the pipe scum skimmer to the upstream side or the downstream side can be arbitrarily set, and the scum on the upstream and downstream of the pipe scum skimmer and a large amount of scum can be efficiently controlled by suppressing the water discharge amount. Can be collected.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a scum skimmer of the present invention, and FIG.
The figure is the same plan view, FIG. 3 is the same side sectional view, and FIG. 4 is an operation explanatory view of the scum skimmer of the present invention. 1 is a settling tank, 2 is a sludge scraper, 22a and 22b are chains, 23 is a flight, 3a is a forward rotation striker, 3b is a reverse rotation striker, 4c is a forward rotation axis, 4d is a reverse rotation axis, 40a, 40
b is a forward rotation lever, 41a and 41b are reverse rotation levers, 42 and 43 are drive levers, 45 and 46 are rods, 47 and 48 are levers, and 5 is a pipe scum skimmer.

Claims (1)

[Claims] 1. The forward striker (3a) and the reverse striker (3b) of the pipe scum skimmer (5) are positioned on the flight (23) mounted at a predetermined position of the main body chain of the sludge attractor arranged in the sedimentation pond. V-shaped forward rotation levers (40a, 40b) and reverse rotation levers (41a, 41b), which are formed in different shapes and are operated by contacting the striker (3a, 3b).
Are provided on the forward rotation shaft (4c) and the reverse rotation shaft (4d), respectively. The forward rotation shaft (4c) and the reverse rotation shaft (4c
d) is connected to the tilted pipe scum skimmer (5) through the forward rotation link mechanism (42, 45, 47) and the reverse rotation link mechanism (43, 46, 48), respectively. Scum skimmer.