JP3207397B2 - Dust removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables maintenance and inspection of a plurality of dust removers arranged along a waterway without stopping dust removal of flowing water flowing down the waterway. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removal facility capable of preventing a water channel from overflowing when the water level rises rapidly due to rainfall or the like.

[0002]

2. Description of the Related Art Conventionally, for example, rainwater that has fallen in an urban area
After being collected in a sewage treatment plant via a culvert, etc., the dust in the running water is removed by a circulating screen or the like installed in the water channel, and, if necessary, after appropriate water treatment,
Discharged to general rivers.

[0003]

By the way, a recirculating screen for removing dust in running water is regularly maintained and inspected because dust may be entangled with the screen or the screen may be damaged by falling objects. Conventionally, maintenance and inspection work of this circulating screen is performed by closing the water channel on the upstream side of the circulating screen with a gate to prevent dust from flowing down the water channel during work, The water flowing down the waterway bypasses the other waterway juxtaposed to the waterway, and removes dust in the running water by a circulation screen installed in the other waterway juxtaposed.

As described above, in the conventional dust removing equipment,
During maintenance and inspection work of the circulating screen, at least two water passages are required in order to continuously remove dust in the flowing water, which has a problem that the construction cost of the equipment increases. .

The present invention has been made in view of the above-mentioned problems of the conventional dust removal equipment, and has been developed for maintenance of a dust remover arranged along a water channel by a single water channel without stopping dust removal of flowing water flowing down the water channel. It is an object of the present invention to provide a dust removing equipment capable of performing inspection work.

[0006]

In order to achieve the above object, a dust removing apparatus according to the present invention comprises a plurality of dust removers provided with a circulating screen along a water passage, and the screen surface of the dust remover has a water flow in the water passage. Are arranged in series so as to be in parallel with each other, partitioning a water passage between the dust removers arranged in series, a pre-filtration water passage communicating with the upstream side of the water passage, and a post-filtration water passage communicating with the downstream side of the water passage. It is characterized in that a first gate and a second gate which are formed and close the pre-filtration water channel and the post-filtration water channel between the dust removers are provided respectively.

[0007] In this dust removal equipment, the first gate and the second gate for closing the pre-filtration water passage and the post-filtration water passage between the dust removers are selectively closed to maintain a plurality of dust removers arranged in series. Inspection work can be performed without stopping dust removal of flowing water flowing down the waterway.

[0008] In this case, a third gate for closing the pre-filtration water channel is provided at this position so that the pre-filtration water channel communicates with the downstream side of the water channel at the downstream side of the dust remover arranged at the most downstream side. can do.

Thus, when the water level rises rapidly during rainfall or the like, the third gate that closes the pre-filtration water channel can be opened to prevent the water channel from overflowing.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a dust removing apparatus according to an embodiment of the present invention. 1 to 8 show an embodiment of the dust removing equipment of the present invention.

This dust removing equipment is set in a dust removing section L set in a water channel 1 for treating rainwater or the like flowing into a sewage treatment plant through a culvert or the like.
The two water guide plates 2A and 2B are disposed on the inner wall of the water channel so as to be inclined in the flowing direction so as to face each other.
Partition walls 3A and 3B are connected to the downstream end sides of A and 2B. The partition walls 3A and 3B are disposed in parallel to the inner wall surface of the water channel 1, and the partition walls 3A and 3B allow the inside of the water channel 1 to be a pre-filtration water channel through which the flowing water before filtration flows down. Outer flow paths 12A, 12 which are disposed on both sides and become water paths after filtration.
B and partition.

The section dividing the water channel 1 between the pre-filtration water channel and the post-filtration water channel by the partition walls 3A and 3B is determined so as to be a dust removal section L having a required length. In this embodiment, the widths of the water passages of the two outer passages 12A and 12B are substantially the same, but the widths of the water passages can be set arbitrarily.

The water channel is formed by an inner channel 11 and an outer channel 12A, 1
At the upstream position and the downstream position of each of the partition walls 3A and 3B which oppose each other, the dust removers 41 and 42 each having a circulating screen are connected in series so that the screen surface is parallel to the water flow in the water channel. And a first gate 51 and a second gate 52 for closing the inner flow path 11 and the outer flow paths 12A and 12B between the dust remover 41 disposed on the upstream side and the dust remover 42 disposed on the downstream side. Is arranged.

The first gate 51 is constituted by gate plates 51A and 51B disposed on the partition walls 3A and 3B, respectively, and can close the inner flow path 11 and prevent water from flowing through the inner flow path 11. On the other hand, the second gate 52 is made up of gate plates 52A, 52B disposed on the partition walls 3A, 3B, respectively.
Thus, the outer flow paths 12A and 12B are closed so that flowing water in the outer flow paths 12A and 12B can be prevented.

As shown in FIGS. 5 and 6, in the present embodiment, the first gate 51 and the second gate 52 are not particularly limited, but are constructed so that they can be manually opened and closed. I do. In this case, support shafts 51S, 52S having rotation handles 51H, 52H mounted on the upper end thereof are mounted on the frame F mounted on the partition walls 3A, 3B via bearings 51C, 52C of the first gate 51 and the second gate 52. The gate plates 51A, 51B, 52A, and 52S are attached to the support shafts 51S, 52S, respectively, and the rotating handles 51H, 52H are rotated to operate the gate plates 51A, 51B, The inner flow path 11 and the outer flow path 12 are rotated by rotating the
A and B are configured to be closed. And the gate plate 5
A rubber cushioning member is attached to the tip of each of the first gates 51A, 51B, 52A, and 52B, if necessary, in addition to the cushioning function.
A, 51B, and the gate plate 52A of the second gate 52,
52B and the inner wall surface of the water channel 1 can be reliably shut off.

A third gate for communicating the inner flow path 11 with the downstream side of the water channel 1 on the downstream side of the dust remover 42 disposed on the downstream side, and closing the inner flow path 11 at this position. 6 is arranged. The third gate 6 includes gate plates 6 </ b> A, 6 </ b> A disposed downstream of the dust remover 42.
B, and when it is closed, the inner flow path 11 is closed to prevent the flow of water in the inner flow path 11.

As shown in FIG. 7, in this embodiment,
Although not particularly limited, the third gate 6 is configured so that it can be opened and closed by electric power. In this case, the frame F mounted on the downstream side of the dust remover 42 disposed on the downstream side is connected via the bearing 6C of the third gate 6 to the frame F.
A support shaft 6S having a motor 6M attached to its upper end is rotatably disposed, and the gate plates 6A and 6B are attached to the support shaft 6S, respectively, and the motor 6M is rotated to drive the gate plates 6A and 6B. By rotating it approximately 90 degrees, the inner flow path 11
Is configured to be closed. Then, the gate plates 6A, 6
If necessary, a rubber cushioning member is attached to the tip of B, so that in addition to the cushioning action, the gap between the opposing gate plates 6A and 6B of the third gate 6 can be reliably shut off.

As shown in FIGS. 1 and 8, each of the dust removers 41 and 42 is provided with a circulating screen 4S that forms the outward path and the return path with the width of the inner flow path 11, and the screen 4S includes In addition to a configuration in which a comb-shaped screen unit is attached to an endless chain as shown in this embodiment, a porous band-shaped screen such as a wire mesh or punched metal can be used. And the dust removers 41, 4
2 is such that the inside of the circulating screen 4S communicates with the inner channel 11 that is the pre-filtration channel, and the outside of the circulating screen 4S communicates with the outer channels 12A and 12B that are the post-filtration channels. By installing, circulation type screen 4
After capturing and removing dust in the flowing water flowing down the inner flow path 11 which is the pre-filtration water channel on the inner surface of S, the filtered flowing water is filtered into the outer flow path 12A, which is the post-filtration water flow path outside the circulating screen 4S. 12B. In this case, the dust captured by the circulation type screen 4S is removed by the dust removers 41 and 4.
The dust is discharged by a dust discharge mechanism (not shown) such as a trough disposed on the upper portion of the second member 2.

In this embodiment, the two dust removers 41 and 42 are arranged in series so that their screen surfaces are parallel to the water flow in the water channel 1, but the number of dust removers is not limited to this. Instead, three or more units can be used.

Next, a method of using the dust removing equipment of the present invention will be described. First, a normal use method will be described with reference to FIG. When rainwater or the like flowing into the water channel 1 flows down the water channel 1 and reaches the position of the dust removal section L of the water channel 1, the rain water is guided by the two water guide plates 2A and 2B arranged in a tapered shape, and the partition wall 3 is formed.
A, 3B, inner flow path 1 constituting a pre-filtration water channel
Introduced in 1. At this time, since the first gate 51 and the second gate 52 are open and the third gate 6 is closed, the flowing water in the inner flow path 11 is supplied to the two dust removers 41 and 4.
2, and the filtered water is filtered by the outer channels 12A,
It is introduced into 12B and flows down to the water channel 1 communicating therewith.

Next, a case in which maintenance and inspection work is performed on the dust remover 42 on the downstream side will be described with reference to FIG. In this case, the first gate 51 is closed while the second gate 52 is open and the third gate 6 is closed. As a result, all of the flowing water in the inner flow path 11 that forms the pre-filtration water path is filtered by the dust remover 41 on the upstream side, and the filtered flowing water flows into the outer flow path that forms the post-filtration water path outside the circulation type screen 4S. 12A and 12B, it is possible to prevent dust from flowing down the water channel 1 via the outer flow paths 12A and 12B from the position of the dust remover 42 on the downstream side where maintenance and inspection work is performed. it can.

Next, a case where maintenance and inspection work of the dust remover 41 on the upstream side is performed will be described with reference to FIG. In this case, the first gate 51 is opened, the third gate 6 is kept closed, and the second gate 52 is closed. As a result, all the flowing water in the inner flow path 11 that forms the pre-filtration water path is filtered by the dust remover 42 on the downstream side, and the filtered flowing water becomes the outer flow path that forms the post-filtration water path outside the circulation type screen 4S. 12A and 12B, it is possible to prevent dust from flowing down the water channel 1 through the outer flow paths 12A and 12B from the position of the dust remover 41 on the upstream side where maintenance and inspection work is performed. it can.

As described above, by selectively closing the first gate 51 and the second gate 52 disposed between the dust removers 41 and 42, the two dust removers 41 and 42 arranged in series can be closed.
The maintenance and inspection work of 42 can be performed without stopping dust removal of the running water flowing down the water channel 1.

Further, when the amount of inflow water becomes equal to or larger than the set value during rainfall or the like, as shown in FIG. 4, the first gate 51 and the second gate 52 are kept open and the third gate 6 is opened. By doing so, the inner flow path 11 constituting the pre-filtration water path and the downstream side of the water path 1 are made to communicate with each other, and it is possible to prevent the water path 1 from overflowing. The opening operation of the third gate 6 is configured to be automatically performed by constantly detecting the amount of inflow water and the like.

[0025]

According to the dust removing equipment of the present invention, the first and second gates for selectively closing the pre-filtration water passage and the post-filtration water passage between the dust removers are selectively closed, so that a plurality of units arranged in series are provided. The maintenance and inspection work of the dust remover can be performed without stopping the dust removal of the flowing water flowing down the water channel, the dust removal efficiency can be improved, and the water channel configuration can be simplified, Equipment construction costs can be reduced.

Further, a third gate for closing the pre-filtration water channel is provided at this position so that the pre-filtration water channel communicates with the downstream side of the water channel at the downstream side of the dust remover arranged at the most downstream side. Thus, when the water level rises suddenly during rainfall or the like, the third gate that closes the pre-filtration water channel can be opened to prevent the water channel from overflowing.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a dust removing apparatus of the present invention (in a normal use state).

FIG. 2 is a plan view in the case where maintenance and inspection of the dust remover on the downstream side are performed.

FIG. 3 is a plan view when maintenance and inspection of the dust collector on the upstream side is performed.

FIG. 4 is a plan view when the inflow water amount is equal to or more than a set value.

FIG. 5 is an explanatory diagram of a first gate and a second gate, and FIG.
Is a plan view, (B) is a front view (cross-sectional view taken along line AA of (A)).
It is.

6A and 6B are explanatory diagrams of a first gate and a second gate, and FIG.
Is a plan view, and (B) is a side view.

FIG. 7 is an explanatory view of a third gate, (A) is a plan view,
(B) is a front view.

FIG. 8 is an explanatory diagram of a dust remover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway 11 Inner flow path (water path before filtration) 12A, 12B Outer flow path (water path after filtration) 2A, 2B Water guide plate 3A, 3B Partition wall 41, 42 Dust remover 51 First gate 52 Second gate 6 Third gate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E02B 5/08 101-102 B01D 33/00

Claims (2)

(57) [Claims] 1. A plurality of dust removers having a circulating screen are arranged in series along a water channel such that the screen surface of the dust remover is parallel to the water flow in the water channel, and the dust removers are arranged in series. A water channel between the dust collectors is defined by forming a pre-filtration water channel communicating with the upstream side of the water channel and a post-filtration water channel communicating with the downstream side of the water channel. Dust removal equipment, wherein a first gate and a second gate are provided. 2. A third gate for closing the pre-filtration channel at this position so as to communicate the pre-filtration channel with the downstream side of the channel at the downstream side of the dust remover arranged at the most downstream side. The dust removal equipment according to claim 1, wherein: