JP2002167734A - Rotary refuse remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-size rotary refuse remover capable of improving the refuse recovery efficiency. SOLUTION: This rotary refuse remover is provided with a bar screen 3 disposed crossing a channel and erected from the channel bottom arcuately and a rake 6 rotating drawing a circular track and raking up suspended refuse caught by the bar screen 3. This refuse remover is characterized in having a pair of annular members 4 rotating in the both sides along the arc bar screen 3, a girder part connecting the annular members 4 in the channel width direction, the comb-teeth-shaped rake 6 formed along the girder part 5, rotation support means 10 and 11 rotatably supporting the annular members 4, and a rake drive 7 rotating the rake by transmitting the rotating force to the upper parts of the annular members 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary dust remover installed in a water channel such as a river, a water channel, a drainage channel, etc., for capturing dust floating on the surface of a water flow or in a water flow.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8 (a), a rotary dust remover has comb-shaped rakes 51, 51 fixed to both ends of a rod-shaped rake arm 50, and a rotation shaft 52 of the rake arm 50, The drive motor 54 rotates through a speed reduction mechanism 53.

On the other hand, a bar screen 56 formed in an arc shape is installed in the water channel 55. As shown in FIG. 1B, when the rake arm 50 rotates in the direction of arrow A,
The comb-shaped rake 51 rises while passing through the gaps (mesh width) of the bar screen 56, and scoops up the refuse accumulated on the upstream side of the bar screen 56.

[0004] The dust thus scooped is scraped into a trough 58 by a scraper 57 and discharged to the outside of the rotary dust remover.

[0005]

However, in the above-mentioned rotary dust remover, since the bearing portion 59 of the rotary shaft 52 must be disposed on the ground, the length of the rake arm 50 is increased in proportion to the depth d of the water channel 55. There is a problem of scaling. When the rake arm 50 becomes long, the rigidity of the rake arm 50 must be increased so that the arrangement of the comb-shaped rake 51 and the bar screen 56 is not disturbed. As a result, the rotary dust removing apparatus becomes larger and the rake is reduced. The driving source to be rotated must use a large output, which increases the cost of the apparatus.

The present invention has been made in consideration of the above-mentioned problems in the conventional rotary dust removing apparatus, and provides a compact rotary dust removing apparatus having high dust removing efficiency.

[0007]

According to the present invention, there is provided a bar screen which is arranged to cross a water channel and rises in an arc shape from the bottom of the water channel; In a rotary dust removing apparatus having a rake for scooping up trash, a pair of annular members rotating on both sides thereof along an arc of the bar screen, a girder connecting the annular members in a water channel width direction, and the girder thereof A rake-shaped rake formed along, a rotation support mechanism rotatably supporting the annular member, and rake driving means for rotating the rake by transmitting a rotational force to an upper portion of the annular member, It is a rotary dust remover comprising:

According to the present invention, when the annular member is rotatably supported by a rotation supporting mechanism such as a roller bearing, and a rotational force is applied from above the annular member,
The rake can be rotated without the need for a high-power drive source, and the bar screen formed along the annular member can be disposed deep in the water channel, thus increasing the size of the rotary dust remover. The dust removal efficiency can be increased without the need.

In the present invention, when the bar screen is disposed on the inner peripheral side of the annular member and on the upstream side, the rake rotates on the outer peripheral side of the bar screen and at the lowest point of the bar screen in the direction opposite to the water flow. Can be configured to rotate.

In this case, since the rake moves in a direction in which the dust accumulated on the bottom of the waterway is peeled off, it is effective in removing dust accumulated on the bottom of the waterway. In this configuration, since a passage for rake passage must be secured between the bar screen and the bottom of the water channel, dust may flow out of the passage, but the auxiliary bar screen may be directed downward from the lower end of the bar screen. By extending the garbage, the outflow of garbage can be prevented.

It is also possible to provide a movable auxiliary bar screen for opening and closing the passage at the lower end of the bar screen, and to open the auxiliary bar screen only when the rake passes. In this case, even if the girder part forming the rake becomes thick, the rake can be passed while preventing outflow of dust.

In the present invention, when the bar screen is disposed on the outer peripheral side of the annular member and on the downstream side, the rake rotates on the inner peripheral side of the bar screen, and simultaneously with the water flow at the lowest point of the bar screen. It can be configured to rotate in a direction. In this case, since the lower end of the bar screen can be fixed to the bottom of the water channel, the above-described means for blocking the passage is unnecessary,
The configuration of the rotary dust remover can be simplified.

In each of the above-mentioned inventions, if two or more girder portions for connecting the pair of annular members are provided, a rake can be formed on each girder portion, and the dust removal efficiency can be further improved.

[0014]

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

FIGS. 1 to 3 show a first embodiment according to the present invention, and FIGS. 4 to 7 show a second embodiment.

In FIG. 1, (a) is a plan view of the rotary dust remover, and (b) is a front view.

In both figures, a rotary dust removing device 2 installed in a water channel 1 has an arc-shaped bar screen 3 disposed in the water channel 1 and a pair of annularly formed bar screens 3 corresponding to the curvature of the bar screen 3. By rotating the annular member 4, a plurality of girders 5 connecting the pair of annular members 4 in the water channel width direction, a comb-shaped rake 6 formed on the girders 5, and the annular member 4 It mainly comprises a driving device 7 for rotating the rake 6 in a circular orbit.

The annular member 4 is formed in an annular shape by connecting a plurality of C-shaped steel members 4a bent by roll forming. As shown in FIG. 2, a chain 8 is wound around the outer peripheral surface thereof. Is fixed. The chain 8 meshes with a sprocket 9, and the sprocket 9 rotates by using an electric motor described later as a drive source.

Further, on the outer surface 4b of the web of the C-shaped steel 4a,
Rollers 10 rotatable about a horizontal axis are provided at a predetermined pitch, and each roller 10 is provided in a groove of a guide member 11 made of a C-shaped steel arranged annularly outside the C-shaped steel 4a along the C-shaped steel 4a. Rolling.

The spar 5 is connected to a C-shaped steel 4a via a bracket 5a, and a comb-shaped rake 6 is formed from the spar 5 toward the bar screen 3 (outward). . On the other hand, the bar screen 3 is formed by arranging strips formed in an arc shape in a water channel width direction at a pitch of 30 to 100 mm, and is arranged on the outer peripheral side and the downstream side of the annular member 4 and corresponds to the eye width. Each comb tooth 6a of the rake 6 slightly enters into the slit-shaped gap S.

More specifically, as shown in FIG. 3, the rake 6 has a girder portion 5 connecting a pair of annular members 4 in the width direction of the water channel, and a plurality of ridges projecting outward from the girder portion 5. And the comb teeth 6a. The beam part 5 is formed by bending a band plate member into a predetermined radius in the width direction thereof, and the radius is set to a value corresponding to the curvature of the annular member 4. In this configuration, the rake 6 rotates on the inner peripheral side of the bar screen 3.

In FIG. 1, the guide member 11 is
It is fixed to a gantry 13 via a support member 12, and the driving device 7 is attached to the gantry 13. The roller 10, the guide member 11, and the support member 12 function as a rotation support mechanism.

The driving device 7 functions as rake driving means, and includes a driving motor 14 and its driving motor 14.
And a joint 16 for connecting the output shaft of the speed reducer 15 and the rotation shaft of the sprocket 9 to each other.

Further, about 45.degree.
A bar screen 3 is provided in an arc shape over a range of 0 °, and a lower end portion thereof is fixed to a bottom surface 1a of the water channel 1 with an anchor bolt 3a, and an upper portion is erected on an upper surface 1b of a side wall of the water channel 1. It is fixed to the receiving beam 3b.

Reference numeral 17 shown in FIG. 1B denotes a dust discharge trough protruding from the side wall 1b of the water channel 1 into the annular member 4, and a conveyor 18 is disposed in the trough 17. ing. Thus, dust that has been scooped up by the rake 6 and has fallen naturally from the rake 6 can be discharged to the outside of the rotary dust remover 2.

Next, the rotary dust removing apparatus 2 having the above-described configuration
Will be described.

When the drive motor 14 is driven, the speed reducer 1
5, the sprocket 9 rotates, and the annular member 4 rotates in the direction of arrow B via the chain 8 meshing with the sprocket 9.

When the annular member 4 rotates, the rake 6 formed on the spar 5 rotates in a circular orbit when viewed from the front. In FIG. 1B, one rake 6 rotates in the water, and the other rake 6 rotates in the air.

Dust floating on the water surface and in the water is captured on the upstream side of the bar screen 3, and when the rake 6 rotating in the water reaches the lowest point of the bar screen 3 and rises along the bar screen 3. Then, the captured dust is separated from the bar screen 3 by the rake 6 and collected on the comb teeth 6a.

The garbage raised from the water surface is trough 1
At the time when it is moved on the upper surface 7, it falls naturally and is discharged to the outside of the rotary dust remover 2 by the conveyor 18.

In this manner, the rake 6 that rotates and moves
Can collect the dust trapped on the bar screen 3 in the water, discharge the collected dust in the air, and continuously collect the dust floating in the water stream.

According to the configuration of this embodiment, since there is no rake arm, there is no need to arrange a drive shaft at the center of rotation of the rake. Thereby, the bar screen 3 can be arranged deep in the water channel 1. As a result, dust efficiency can be greatly increased as compared with a conventional rotary dust remover configured to rotate a rake arm.

FIG. 4 shows a second embodiment of the present invention. FIG. 4 (a) is a plan view of a rotary dust remover, and FIG. 4 (b) is a front view. In the following description, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The rotary dust remover 20 shown in FIG. 4 has an arc-shaped bar screen 21 disposed on the inner peripheral side and upstream side of the annular member 22, contrary to the first embodiment.

In this embodiment, the bar screen 21 is also used.
A pair of annular members 22 are formed in accordance with the curvature of the pair, and the pair of annular members 22 are connected by a plurality of girder portions 23 arranged in the width direction of the water channel. 24 are formed. However, rake 2
4 differs from the first embodiment in that 4 rotates on the outer peripheral side of the annular member 22.

As shown in FIG. 5, the annular member 22 is
The sprocket 9 is formed in an annular shape by connecting a plurality of C-shaped steels 22a bent by roll forming, and the sprocket 9 meshing with the chain 8 attached to the outer peripheral surface thereof is rotated by the electric motor 14. ing.

Rollers 10 rotatable around a horizontal axis are provided at a predetermined pitch on the outer surface 22b of the web of the C-shaped steel 4a, and each roller 10 rolls in the groove of the guide member 11. It has become.

The beam portion 23 is connected to the C through a bracket 23a.
Comb-shaped rake 24 is connected to bar beam 21 from beam portion 23 (inward).
Are formed.

As shown in FIG. 6, the rake 24 includes a girder portion 23 connecting the pair of annular members 22 in the width direction of the water channel.
And a plurality of comb teeth 24a protruding from the beam portion 23 toward the center of the annular member 22.
The girder portion extending forward in the rotation direction of the holder holds the scavenged dust. The girder portion 23 is formed by bending a strip member into a predetermined radius in the width direction thereof, and the radius is set to a value corresponding to the curvature of the annular member 22.

On the other hand, as shown in FIG. 4B, the bar screen 21 is formed by arranging arc-shaped strips at a pitch of 30 to 100 mm in the width direction of the channel, and is formed between the strips. The teeth 24a of the rake 24 in the slit S
Is to enter slightly. The bar screen 21 is provided with support beams 12a, 12b, and 12c connecting the support members 12 arranged on both sides of the channel 1 in the channel width direction.
Supported by In this configuration, the rake 24 rotates on the outer peripheral side of the bar screen 21.

However, the rake 24 is connected to the bar screen 21.
In order to rotate the rake 24 on the outer peripheral side, a passage for passing the rake 24 must be secured between the lower end of the bar screen 21 and the water channel bottom surface 1a. Become. Therefore, in the present embodiment, the auxiliary bar screen 2
1a is hanging.

Therefore, at the lowermost end of the bar screen 21, only the gap H through which the girder portion 23 can pass is secured between the auxiliary bar screen 21a and the water channel bottom surface 1a, and the outflow of dust is prevented. It is supposed to.

Further, since the girder portion 23 is provided with a radius as described above, the gap H can be set as narrow as possible, and the cross-sectional rigidity of the girder portion 23 itself can be increased.

The bar screen 21 is provided over a region of about 180 ° to 360 ° in the annular member 4, and dust caught on the upstream side of the bar screen 21 rotates in the direction of arrow C. Collected by rake 24,
The dust that has been lifted from the water surface moves while being supported by the above-ground exposed portion 21b of the bar screen 21, and at the time when the dust passes through the end of the above-ground exposed portion 21b, the trough 1 is removed.
7, falls naturally on the conveyor 18 and is discharged.

Next, FIG. 7 shows the above-mentioned auxiliary bar screen 21a constituted by a movable auxiliary bar screen.

When the rotary dust remover is applied to the wide water channel 1, it is necessary to increase the rigidity of the girder 23 connecting the annular member 22 to prevent deformation. However, the girder part 23
Is reinforced with a reinforcing member such as a shaped steel, for example, a relatively large passage must be secured between the lower end portion of the bar screen 21 and the water channel bottom surface 1a to allow the reinforcing member to pass therethrough. Will leak out.

Therefore, when the girder portion 23 is reinforced thickly, it is possible to prevent the dust from flowing out by providing a movable auxiliary bar screen that opens only when the rake 24 passes.

The specific configuration is as follows.
Is formed at the lower end portion thereof with a movable auxiliary bar screen 21a that opens and closes via a hinge 25. The auxiliary bar screen 21a is normally held in an inclined position (shielded position) indicated by a solid line, and its lower end 2 is not affected by water flow.
Since 1b is in contact with the channel bottom 1a, it cannot be opened downstream.

The rake 2 is attached to the auxiliary bar screen 21a.
4 approaches, the comb teeth 24a of the rake 24 pass through the gap of the auxiliary bar screen 21a, but the reinforcing portion 24b having a box-shaped cross section reinforcing the rake 24 becomes the auxiliary bar screen 2a.
Since the auxiliary bar screen 21a cannot pass through 1a, the auxiliary bar screen 21a is pushed by the reinforcing portion 24b, rotates around the hinge 25 as a fulcrum, and is displaced to the retracted position shown by the broken line.

When the rake 24 moves further, the reinforcement 2
Since 4b is separated from the auxiliary bar screen 21a, the auxiliary bar screen 21a receives its own weight and water flow and returns to the shielding position. Thereby, the auxiliary bar screen 21a
Is opened only when the rake 24 passes, to allow the rake 24 to pass, and otherwise closed to prevent outflow of dust.

In each of the above embodiments, the annular member 4
(Or 22) shows a configuration in which the rake 6 (or 24) is arranged at two places. However, the present invention is not limited to this, and a rake can be arranged at more places. Then, the dust removal efficiency can be further increased.

Further, a spray nozzle for injecting high-pressure water above the trough 17 and above the annular member 4 may be provided downward so that dust adhering to the rake 6 is forcibly dropped.

In the above embodiment, the dust removing device according to the present invention is applied to a water channel, but can be applied not only to a water channel but also to a river or a drainage channel.

[0054]

According to the first aspect of the present invention, since the annular member is rotatably supported and the rotational force is applied from the upper portion of the annular member, the rake does not require a large output drive source. Can be rotated, and the bar screen formed along the annular member can be disposed deep in the water channel, so that the dust removing efficiency can be increased without increasing the size of the rotary dust remover.

According to the second aspect of the present invention, the rake moves in the direction in which the dust accumulated on the bottom of the waterway is separated, so that the dust caught on the bottom of the waterway can be reliably collected.

According to the third aspect of the present invention, since the auxiliary bar screen extends downward from the lower end of the bar screen, it is possible to prevent dust from flowing out from the gap between the water channel bottom surface and the bar screen.

According to the present invention, a movable auxiliary bar screen for opening and closing the passage is provided at the lower end of the bar screen, and the auxiliary bar screen is opened only when a rake passes. Even if the girder part forming the rake becomes thick, the rake can be passed while preventing outflow of dust.

According to the fifth aspect of the present invention, the bar screen is disposed on the outer peripheral side of the annular member and on the downstream side, and the rake is configured to rotate on the inner peripheral side of the bar screen. No means for blocking the passage is required, and the configuration of the rotary dust remover can be simplified.

According to the sixth aspect of the present invention, by providing two or more girder portions for connecting a pair of annular members, a rake can be formed on each girder portion, and the dust removal efficiency can be further improved. .

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a rotary dust remover according to the present invention, wherein (a) is a plan view and (b) is a front view.

FIG. 2 is an enlarged view of a main part showing an arrangement of a rake and a bar screen shown in FIG.

FIG. 3 is an enlarged perspective view of the rake shown in FIG.

FIG. 4 is a view corresponding to FIG. 1, showing a second embodiment of the rotary dust remover according to the present invention.

FIG. 5 is an enlarged view of a main part showing an arrangement of a rake and a bar screen shown in FIG. 4;

6 is an enlarged perspective view of the rake shown in FIG.

FIG. 7 is an enlarged view of a main part showing a modification of the auxiliary bar screen shown in FIG.

FIG. 8A is a side view showing a configuration of a conventional rotary dust remover, and FIG. 8B is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water channel 1a Bottom surface 2 Rotary dust remover 3 Bar screen 4 Annular member 4a C-shaped steel 5 Girder part 6 Rake 6a Comb teeth 7 Drive device 8 Chain 9 Sprocket 10 Roller 11 Guide member 12 Support member 13 Mounting stand 14 Drive motor 15 Reduction gear 17 Trough 18 Conveyor

Claims (6)

[Claims] 1. A rotation having a bar screen arranged so as to cross a water channel and rising from the bottom of the water channel in an arc shape, and a rake for scooping up floating dust trapped on the bar screen while rotating in a circular orbit. In the dust remover, a pair of annular members rotating on both sides thereof along an arc of the bar screen, a girder connecting the annular members in a water channel width direction, and comb teeth formed along the girder A rake, a rotation support mechanism rotatably supporting the annular member, and rake driving means for rotating the rake by transmitting a rotational force to an upper portion of the annular member. Rotary dust remover. 2. The bar screen is arranged on the inner peripheral side and upstream side of the annular member, and the rake rotates on the outer peripheral side of the bar screen and at the lowest point of the bar screen in a direction opposite to the water flow. The rotary dust remover according to claim 1, wherein the rotary dust remover is configured to rotate. 3. A rake passage is provided between the bar screen and the water channel bottom, and an auxiliary bar screen is extended from a lower end of the bar screen so as to close the passage. The rotary dust remover according to the above. 4. A rake passing passage is provided between the bar screen and the water channel bottom surface, and a movable auxiliary bar screen for opening and closing the passage is provided at a lower end of the bar screen, and the rake passes therethrough. 3. The rotary dust remover according to claim 2, wherein the auxiliary bar screen is opened only when it is needed. 5. The bar screen is disposed on the outer peripheral side and downstream side of the annular member, and the rake rotates on the inner peripheral side of the bar screen and at the lowest point of the bar screen in the same direction as the water flow. The rotary dust remover according to claim 1, wherein the rotary dust remover is configured to rotate. 6. The rotary dust removing apparatus according to claim 1, wherein two or more girder portions connecting said pair of annular members are provided, and said rake is formed on each girder portion.