JP2981662B1 - Dust removal device - Google Patents

Abstract

An object of the present invention is to provide a dust removing device capable of improving dust removing capability and reducing costs. SOLUTION: A ring screen 3 provided with a plurality of rake portions 3c on an inner peripheral surface side of a cylindrical main body is provided with a plurality of rollers 9 provided annularly on a support frame 4 and an outer peripheral surface of the ring screen 3 is provided. By making the side edge partly contact,
It is rotatably supported and the rotation center axis R of the ring screen 3
The ring screen 3 supported by the support frame 4 is disposed in the water channel 2 so that the ring screen 3 is substantially perpendicular to the direction of the water channel through which dust and the like flow, and a driving mechanism 5 for rotating the ring screen 3 is mounted on the ring screen 3. It is characterized in that it is provided on the upper side and on the outer peripheral surface side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an irrigation canal, a drainage canal,
The present invention relates to a dust removal device that is installed in a river or the like and collects dust and the like contained in water flowing through a water channel.

[0002]

2. Description of the Related Art A dust remover described in, for example, Japanese Patent No. 2503835 is known as this type of dust remover.

As shown in FIG. 5, this dust remover supports a dust remover main body 50 formed in a substantially cylindrical shape by a shaft member 51, and the shaft member 51 is arranged so as to be orthogonal to the water flow direction. The dust remover main body 50 is arranged in a water channel, and a part of the lower side of the dust remover main body 50 is immersed in water. A net screen is adhered to an outer peripheral member 52 of the dust remover main body 50, and strip-shaped rakes 53 are arranged at equal intervals via a horizontal member. The outer peripheral member 52 is connected to a disk portion 55 via a support rod 54, and a driven sprocket 56 provided on the disk portion 55 is connected to a motor 58 with a speed reducer via a chain 57. ing.

Accordingly, when the motor 56 with a speed reducer is driven, the dust remover body 50 rotates in the direction of arrow B, and dust and the like contained in the water flowing in the water channel adhere to the net screen and the rake 53 and are captured. The captured dust is blown off by water that is pressurized by the cleaning pump 59 and is injected at a high pressure outward from the injection hole 60 a of the injection pipe 60, and is collected by the discharge trough 61.

[0005]

However, in the conventional dust remover, since a part of the dust remover body 50 is immersed in water, there is a problem that the dust removing efficiency is low. In addition, there is also a problem that the dust remover main body 50 must be manufactured individually in accordance with the width of the water channel so that dust does not pass through both sides of the dust remover main body 50, so that the cost cannot be reduced.

The present invention has been made in consideration of the above-mentioned problems of the conventional dust remover, and provides a dust remover capable of improving dust removal efficiency and reducing costs. .

[0007]

SUMMARY OF THE INVENTION The present invention relates to a dust removing apparatus for collecting dust contained in a water flow by disposing a ring screen having a rake portion inside a cylindrical main body in a water channel. The ring screen is rotatably supported by contacting a plurality of rollers arranged on the outer peripheral portion of the screen with the annular portion of the support frame so that the center axis of rotation of the ring screen is substantially orthogonal to the water channel direction. Place the ring screen supported by the frame in the waterway,
This is a dust removing device in which a drive mechanism for rotating the ring screen is provided above the ring screen and on the outer peripheral surface side.

In the present invention, the body of the cylindrical main body may be constituted by a net screen, and may be constituted by a screen in which a large number of ring-shaped members are arranged in parallel in a cylinder axis direction. it can.

In the present invention, a discharge trough may be provided above the ring screen, and a cleaning nozzle may be provided outside the ring screen so as to face the discharge trough.

In the present invention, a cylindrical box is accommodated in a central portion of the ring screen with the rotation center axis of the ring screen as an axis, and each end of the rake portion is brought close to the outer peripheral surface of the cylindrical box. Can be extended.

In the case of such a configuration, it is preferable that a concave groove is provided at an upper portion of the cylindrical box body, and the concave groove is connected to the discharge trough. Further, it is preferable to provide a cleaning nozzle outside the ring screen so as to face the concave groove.

In the present invention, it is preferable to provide a water flow guide between the inner wall of the water channel and the ring screen for guiding water flowing through the water channel into the ring screen.
More preferably, the water flow guides are provided on both sides of the ring screen.

[0013] In the present invention, it is preferable that a water flow branching portion is provided upstream of the ring screen to branch the water flow in the water channel to both sides of the ring screen.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 shows a first embodiment of a dust remover according to the present invention.

In FIG. 1, a dust removing device 1 is provided in a water passage 2 through which water containing dust and the like flows, and a ring screen arranged such that a rotation center axis R is substantially perpendicular to a flow direction of the water passage 2. 3, a support frame 4 for rotatably supporting the ring screen 3, a drive mechanism 5 for rotating the ring screen 3, a cleaning spray 6 for removing dust attached to the ring screen 3, and a cleaning spray 6 It is mainly composed of a discharge trough 7 for carrying out the dust and the like removed by the above to the outside, and a water flow guide portion 8 for guiding a water flow into the ring screen 3.

Hereinafter, the configuration of each unit will be described in detail.

The ring screen 3 connects a pair of ring-shaped outer peripheral members 3a and 3b arranged in parallel with a plurality of shelves 3c as rake portions, and a net screen 3d is adhered to the outside of the shelves 3c. Thereby, it is formed in a cylindrical cage shape.

As shown in FIG. 2, the shelf 3c is
a, 3b from and a shelf board hem 3c ₁ and its shelf board skirt 3c ₁ from the screen net 3d shelves blade portion bent toward the side 3c ₂ erected in the centripetal direction, the screen net 3d In between, it creates a rake that can hold the trash.

Outer peripheral members 3a, 3b of ring screen 3
Is formed by shaping a round shape steel having a Z-shaped cross section, and guide rollers 9 are arranged at equal intervals on the vertical ribs of the outer peripheral members 3a and 3b. On the other hand, the supporting frames 4 and 4 are formed from U-shaped steel bars having an L-shaped cross section so as to partially have an annular portion, and the inner peripheral surface of the annular portion is used as a guide rail. The guide roller 9 comes into rolling contact. The reason why the support frames 4 and 4 are U-shaped is that the ring screen 3 can be dropped from above.

In FIG. 1, an endless chain (not shown) is fixed in an annular shape to the outer peripheral member 3a of the ring screen 3, and a sprocket 5a meshes with this chain. The sprocket 5a is disposed approximately 45 ° diagonally right above when the horizontal center line of the ring screen 3 is set to 0 °.

The drive shaft of a conventionally known electric motor (not shown) can be connected to the rotation shaft 5b of the sprocket 5a via a speed reducer. Also,
When an electric motor with a reduction gear is used, its drive shaft is directly connected. The sprocket 5a
Is supported by a bearing 5c, and the bearing 5c is attached to a beam member 10 spanned between the side walls 2b, 2b of the water channel 2. The sprocket 5a, the speed reducer, and the electric motor can be regarded as a drive mechanism.

With this configuration, the rotational force of the ring screen 3 is applied from above the outer peripheral portion of the ring screen 3. In other words, since no drive mechanism is arranged inside the ring screen 3, the ring screen 3 can be immersed deeply in the water of the water channel 2 as long as the drive mechanism 5 is not immersed, and as a result, dust is removed. Efficiency can be increased. The rotation speed of the ring screen 3 is approximately 2 m / min in peripheral speed, but is appropriately set according to the flow rate and the amount of dust.

Also, above the ring screen 3,
A discharge trough 7 for discharging dust to the outside of the ring screen 3 is provided, and a cleaning nozzle 6 is provided outside the ring screen 3 so as to face the discharge trough 7.
Is provided. A plurality of injection holes are formed in the cleaning nozzle 6 corresponding to the width of the ring screen 3, and water pressurized and pumped by a pump (not shown) is injected downward. As the water used for the injection, water flowing through the water channel 2 can be used. Numeral 11 denotes a dust collecting pit for storing dust and the like sent from the discharge trough 7.

Ring screen 3 arranged in waterway 2
A water flow branching portion 12 for branching the water flow to the left and right sides of the ring screen 3 is provided on the upstream side. The water branch 12 is made of a structure or concrete in which a steel plate is attached to a frame made of a shaped steel, and is fixed to and integrated with the support frame 4.

More specifically, the water flow branching portion 12 is a triangular plate portion 1 which is mounted on the support frame 4 and protrudes in a chevron toward the upstream of the water channel.
2a and a rectifying plate portion 12b extending from the triangular plate portion 12a in the downstream direction and covering the lower left half of the outer peripheral members 3a and 3b (arc-shaped range when viewed from the direction A). . The lower edge of the water flow branching portion 12 is in contact with the bottom surface of the water channel 2, and the upper edge thereof is at most equal to the height of the water channel side wall 2 b.

On the downstream side of the ring screen 3, between the water channel side walls 2 b, 2 b and the ring screen 3, a block-shaped block for guiding the water flow branched by the water flow branch portion 12 into the ring screen 3. Each of the water flow guides 8 is provided. This water flow guide member 8
Is made of a structure or concrete in which a steel plate is attached to a frame constructed of shaped steel, and is formed in an arc shape along the edge of the lower right half of the ring screen 3. The colliding surface is formed in the curved surface 8a so as to be able to be guided into the ring screen 3 without disturbing the water flow. This water flow guide section 8
The lower edge is in contact with the bottom surface of the channel 2, and the upper edge of the lower edge coincides with the height of the channel side wall 2 b at the maximum.

Reference numerals 13a and 13b denote regulating rollers for regulating the floating of the ring screen 3 housed in the support frame 4, and are arranged to make rolling contact with the left shoulders of the outer peripheral members 3a and 3b. These regulating rollers 13a, 13b are attached to supporting members 14a, 14b (only 14b is shown) extending from the channel side wall 2b. However, when the ring screen 3 is detached from the supporting frame 4, it can be removed. I can do it. In addition,
The right shoulders of the outer peripheral members 3a and 3b are meshed with the sprocket 5a and the chain as described above.
Lifting of the ring screen 3 is regulated.

Next, the operation of the dust removing apparatus having the above configuration will be described. It is assumed that the ring screen 3 is rotating.

The water flow in the water channel 2 is branched to both sides of the ring screen 3 by the water flow branching portion 12. Each of the branched water flows collides with the water flow guide members 8, 8, and changes the flow direction along the curved surface 8 a in a direction substantially orthogonal to the water channel 2 (counterflow).
And introduced into the ring screen 3.

After the respective water flows introduced into the ring screen 3 merge, they pass through the screen net 3d and are returned to the water channel 2 again. At this time, dust that is larger than the mesh size of the net screen 3d is captured on the downstream side of the ring screen 3 in the immersed portion, and water passes through the net screen 3d and enters the water channel 2 on the downstream side of the ring screen 3. Swept away. When the ring screen 3 rotates and the shelf 3 at the portion where the dust is captured emerges from the water surface, the dust is held between the shelf 3c and the net screen 3d and lifted above the ring screen 3.

When the shelf 3c holding the dust reaches the apex of the ring screen 3, the shelf 3c is turned downward. You. Further, dust remaining on the net screen 3d is forcibly peeled off from the net screen 3d by high-pressure washing water jetted from the washing nozzle 6, and collected in the discharge trough 7. Accordingly, the net screen 3 of the rotating ring screen 3
d is immersed again in water in a state where clogging is eliminated by being washed by the washing nozzle 6, and a stable dust collection process can be always performed.

As described above, in the above configuration, since the driving mechanism for rotating the ring screen 3 is arranged on the upper outer peripheral portion, the ring screen 3 can be immersed deeply in the water within a range where the driving mechanism is not immersed. . In other words, even if the water level of the water channel 2 increases or decreases, it is possible to stably collect dust and the like without being affected by the increase or decrease.

According to the above configuration, the present invention can be applied to the water channel 2 having an arbitrary width only by adjusting the width W of the water flow guide portion 8 (see FIG. 1). Need not be manufactured according to the channel width.

FIG. 3 shows another embodiment of the dust removing apparatus according to the present invention. In the following description, the same components as those in FIG.

In the dust removing apparatus 20 shown in the figure, a shelf plate 3c is erected at a plurality of positions of a pair of peripheral members 3a and 3b arranged in parallel, and the shelf plate 3c is used as a supporting member to form a large number of ring members 21a.
Are arranged in the cylinder axis direction in a state of being parallel, and formed in a cylindrical basket shape. The interval between the annular members 21a is adjusted to such an extent that dust can be collected.

Ring member 21a instead of net screen
Has the advantage that it can cope with large-sized dust.

FIG. 4 shows still another embodiment of the dust removing apparatus according to the present invention.

In the dust removing device 30 shown in FIG. 1, a columnar box 31 is accommodated in the center of the ring screen 3 with the rotation center axis of the ring screen 3 as the axis. Further, a plurality of shelves 32 are provided from the outer peripheral portion of the ring screen 3 toward the centripetal direction, and each end of the shelves 32 is
Each is extended to the vicinity of the outer peripheral surface of the cylindrical box body 31 (so that the gap between the outer peripheral surface is about 10 mm) so that the dust trapped between the shelf plate 32 and the net screen 3 d is scooped up. Has become.

A concave groove 31a is formed in the upper part of the cylindrical box 31, and the concave groove 31a is connected to the discharge trough 7. Therefore, the trash picked up by the shelf plate 32 is dropped into the discharge trough 7.

As described above, in the configuration in which the cylindrical box body 31 is accommodated in the ring screen 3, the dust trapped on the shelf plate 31a is reliably transported to the concave groove 31a, so that the dust collection efficiency is improved. There are advantages.

In the present invention, the driving force for rotating the ring screen 3 is obtained from the electric motor. However, the present invention is not limited to this. It is also possible to apply a rotational force to the sprocket 5a via a power transmission mechanism such as a chain.

It is preferable to use a resin roller as the roller 9 so that the rolling performance does not deteriorate even when used underwater.

[0044]

As is apparent from the above description,
ADVANTAGE OF THE INVENTION According to the dust removal apparatus of this invention, since the driving force for rotating a ring screen was provided from the drive mechanism arrange | positioned at the upper outer peripheral part of a ring screen, it became possible to sink the ring screen deep in water. , Thereby increasing the dust removal ability.

Further, the configuration is such that the ring screen is rotatably supported by rollingly contacting a roller provided on the outer peripheral portion of the ring screen with the annular portion of the support frame as a guide rail, thereby simplifying the configuration of the dust removing device. And has the advantage that cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a dust remover according to the present invention.

FIG. 2 is an enlarged view of a main part of the ring screen shown in FIG.

FIG. 3 is a perspective view showing a second embodiment of a dust removing device according to the present invention.

FIG. 4 is a perspective view showing a third embodiment of a dust remover according to the present invention.

FIG. 5 is a longitudinal sectional view showing a configuration of a conventional dust remover.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 dust removing device 2 water path 3 ring screen 3a, 3b outer peripheral portion 3c shelf 3d net screen 4 support frame 5 drive mechanism 5a sprocket 6 cleaning spray 7 discharge trough 8 water flow guide 9 guide roller 12 water flow branch

Claims (10)

(57) [Claims] 1. A dust remover for collecting dust contained in a water flow by disposing a ring screen having a rake portion inside a cylindrical main body in a water channel, wherein the dust screen is disposed on an outer peripheral portion of the ring screen. By contacting a plurality of rollers that have been partially contacted with the annular portion of the support frame,
The ring screen is rotatably supported, and the ring screen supported by the support frame is arranged in a water channel such that a rotation center axis of the ring screen is substantially orthogonal to a water channel direction, and the ring screen is rotated. Drive mechanism for
A dust removing device provided above the ring screen and on the outer peripheral surface side. 2. The dust removing device according to claim 1, wherein the body of the cylindrical main body is formed of a net screen. 3. The dust removal apparatus according to claim 1, wherein the body of the cylindrical body is formed of a screen having a configuration in which a number of annular members are arranged in a cylindrical axial direction in parallel. 4. A discharge trough is provided above the ring screen, and a cleaning nozzle is provided outside the ring screen so as to face the discharge trough. A dust remover according to any of the claims. 5. A cylindrical box body is accommodated in a center portion of the ring screen with a rotation center axis of the ring screen as an axis, and each tip of the rake portion extends to near an outer peripheral surface of the cylindrical box body. The dust removal device according to any one of claims 1 to 3, which is extended. 6. The dust removing apparatus according to claim 5, wherein a concave groove is provided on an upper portion of the cylindrical box body, and the concave groove is connected to a discharge trough. 7. The dust removal apparatus according to claim 6, wherein a cleaning nozzle is provided outside the ring screen so as to face the concave groove. 8. The water flow guide portion between the inner wall of the water channel and the ring screen for guiding water flowing through the water channel into the ring screen. Dust remover. 9. The dust removal apparatus according to claim 8, wherein the water flow guides are provided on both sides of the ring screen. 10. The dust removal device according to claim 1, further comprising a water flow branching portion upstream of the ring screen for branching a water flow in the water channel to both sides of the ring screen.