JP2000273846A - Trash removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a difference in steps on a water bottom while increasing trash removing performance. SOLUTION: Trash is caught by a screen 12, and the trash is scraped up and removed by a rake 16 turning and moving peripherally in the vertical direction. The rake 16 consists of a rake frame 30 moving along a guide part 47 and a rake main body 34 supported on the rake frame 30. The rake main body 34 can oscillate to a rise attitude in which its surface is substantially orthogonal to a direction of advance and a flat and turn-down attitude in which it is inclined for the direction of advance. A cam 38 and a guide member 80 are provided in the rake main body 34 and in a lower end part of the screen 12, respectively, and when the rake 16 passes the lower end part of the screen 12, the cam 38 slides and rotates for the guide member 80, thereby holding the rake main body 34 at the flat and turn-down attitude.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust removing apparatus for removing dust such as algae and grass clumps flowing through a waterway by scavenging the dust with a rake while capturing the dust with a screen.

[0002]

2. Description of the Related Art Conventionally, dust such as algae and grass clumps in running water has been captured by a screen provided in a waterway, and the captured trash has been scooped up by moving a rake along the screen. A dust removing device adapted to remove the dust is generally known.

FIG. 10 shows a rotary rake type dust remover which is a kind of such a dust remover. This device includes a screen 52 interposed in the width direction of the water channel 50, an apron 54 connected to the upper part of the screen 52, a plurality of rakes 56 for scraping dust, a driving mechanism of the rake 56, And a driven conveyer 58 for transporting the scraped garbage to the side of the waterway. The driving mechanism is a motor 6
The rake 56 is made up of a chain transmission mechanism having a drive source of 0 as a drive source. Then, while the dust is captured by the screen 52, the rake 56 is moved around by the operation of the motor 60. Specifically, the rake 56 is lowered on the downstream side of the screen, and the rake 56 is inverted on the bottom of the water to make the screen surface (upstream side). )
, The captured dust is scraped up along the screen 52 and the apron 54, and the dust is introduced into the conveyor 58 from the upper end of the apron.

[0004]

In the rotary rake type dust removing apparatus as described above, the water bottom at the installation location of the apparatus is usually set deeper than the water bottom on the upstream side, and a step is thus provided in the water channel. Thus, while avoiding interference between the rake and the water bottom, the rake can be used to scavenge dust, such as empty cans, which flow down while sinking on the water bottom.

[0005] By the way, in order to satisfactorily scoop up the refuse flowing down in the state of sinking into the water bottom, it is effective to increase the size of the rake, that is, to lengthen the rake claw.

[0006] However, in this case, the performance of picking up dust that flows down the water bottom is improved, but the claw length is increased,
In order to avoid interference between the water bottom and the rake, it is necessary to further increase the level difference, which causes a problem that the construction period is lengthened and the construction cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is directed to a rotary rake type dust removing apparatus,
It is an object of the present invention to provide a dust remover capable of reducing a step on a water bottom while improving dust removal performance.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a screen interposed in a waterway for catching dust flowing down, and a screen for moving the dust vertically orbiting along a track. In a dust remover with a rake that scoops up garbage by ascending along the surface of the screen, the rake has a frame that moves along the orbit, and a scooping surface for scraping up the garbage, The rake body is supported by the frame, and the rake body is swingably displaceable between a standing position in which the lifted surface is substantially perpendicular to the traveling direction during the orbital movement and an inclined flat posture. At least one attitude regulating means for supporting the frame on the lower end of the stroke of the rake during the orbital movement of the rake so as to bring the rake body into a prone attitude is provided.

[0009] According to this device, dust is captured when running water passes through the screen, while the rake moves around, so that the captured dust is scraped up along the screen. In such a rake orbital movement operation, when the rake reaches the lower end portion of the movement stroke, the rake body is brought into a prone posture.

In the above construction, the attitude regulating means comprises a guide member attached to a lower end portion of the screen, and a cam member coupled to the rake body and slidingly contacting the guide member as the rake moves around. The guide member and the cam member are configured so that the rake main body is brought into a prone posture by sliding contact with the guide member.

In the above-mentioned apparatus, it is desirable to provide an urging means for urging the rake main body so as to hold the rake main body in the upright posture. In this way, the rake main body can be reliably held in the upright position except at the lower end portion of the rake movement stroke.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show an example of a dust removing apparatus according to the present invention. As shown in these figures, the dust removing device 10 is installed immediately downstream of the step portion 3 formed in the water channel 1 by lowering the water bottom 1b on the downstream side from the upstream side. Screen 1 to capture flowing dust
2, an apron 14 disposed above the screen 12, a rake 16 for scooping up the trash caught by the screen 12, a drive mechanism for moving the rake 16, and dropping the scraped trash off the rake 16. And an auxiliary screen 19 for capturing dust flowing down the water bottom 1b.

The screen 12 has a vertically elongated bar-shaped bar 12a which is arranged in the width direction of the water channel 1 (in the horizontal direction in FIG. 1;
(Hereinafter simply referred to as the width direction). A main body frame of the dust removing device 10 that rises from the vicinity of the water bottom 1b so as to close the water channel 1 and that the upper portion is slightly inclined toward the downstream side. 11 is fixed. As shown in FIG. 3, the main body frame 11 includes a pair of side plates 2 fixed to the side walls 1 a of the water channel 1 by anchor bolts 22.
4, a plurality of H-shaped steels 26 extending in the width direction are joined, and the screen 12 is
It is arranged between the both side plates 24 and on the upstream side of the die steel 26, and is fixed to the die steel 26 by a bolt nut or the like.

The apron 14 is connected to the upper end of the screen 12 and constitutes a guide surface for dust. The apron 14 is made of a steel plate, and is disposed with its lower end overlapped on the downstream side of the screen 12. It is fixed to the main body frame 11 by bolts and nuts. In addition, apron 14
The upper end portion is wound back downstream at an upper portion of a drive shaft 60 to be described later, and is configured to guide the scraped dust from the upper end portion of the apron to the downstream side.

In the illustrated example, two rakes 16 are mounted, and move up and down around the screen 12 and the apron 14.
Rises along the surface (upstream surface) of the screen 12 and the apron 14 from the lower end of the screen 12 and reverses at the upper end of the apron and descends downstream of the screen 12 and the apron 14, and then reverses at the lower end of the screen 12. And moves to the upstream side of the screen 12.

The rake 16 and its driving mechanism will be described in more detail. As shown in FIGS. 2 and 3, each side plate 24 of the main body frame 11 is located on the downstream side of the apron 14 and downward from near the upper end thereof. The apron 14 and a hollow guide 47 extending to the upper end of the apron along the screen 12 are provided at the lower end of the screen 12 so as to be inverted at the lower end of the screen 12. The guide holes 48 that constitute the trajectory during the orbital movement of are arranged to face each other. A drive shaft 60 extending in the width direction is rotatably supported on an upper portion of the main body frame 11, and a pair of sprockets 62 are attached to the drive shaft 60 at a predetermined interval. An endless chain 64 is mounted on the sprocket 60. Each of these chains 64 is interposed in the hollow portion of the guide portion 47 and the drive shaft 60 is attached to the main body frame 11.
Is connected via a speed reduction mechanism to an output shaft of a drive motor 66 fixed to the drive motor 66.

On the other hand, each rake 16 has a rake frame 30 extending in the width direction, and a rake body 34 attached to the rake frame 30 to scoop up dust. It is interposed between.

Rollers 46 are rotatably mounted on both ends of the rake frame 30 in the longitudinal direction, and these rollers 46 are inserted into the respective guide holes 48 and are prevented from coming off by a flange 46a formed integrally with the rollers 46. . The chain 64 and the rake frame 30 are connected via the drive shaft of each roller 46, and the drive motor 66
When the sprocket 62 is rotated by the operation of the above, the chain 64 moves around, and the roller 46 is guided along the guide hole 48, whereby the rake 16 moves vertically around the screen 12 and the apron 14. It is configured to move around.

The rake frame 30 is made of, for example, channel steel. When the rake 16 rises along the surface of the screen 12 or the like, the base 30a of the rake frame 30 is attached to the screen 12 or the like as shown in FIGS. When the rake 16 moves in a state where the webs 30b are substantially parallel and each web 30b protrudes to the upstream side and the rake body 34 is in the normal position where the rake body 34 is located at the upper part of the rake frame 30, and conversely, it descends on the downstream side of the screen 12 Each web 30b of the rake frame 30 projects to the downstream side, and the rake 1 is positioned in a reverse position where the rake body 34 is located at the lower part of the rake frame 30.
6 moves.

The rake body 34 is made of an elongated steel plate extending in the width direction. In the above-mentioned normal position, the upstream and downstream sides (upper and lower sides in FIG. 3) are provided with claws for scraping dust. A plurality of each are arranged in the longitudinal direction. Specifically, as shown in FIG. 3, on the downstream side, short claws 34a for scooping up dust caught by the screen 12 are arranged in parallel, and on the upstream side, dust caught by an auxiliary screen 19 described later. Long claws 34 for frying
b are juxtaposed. The claws 34a and 34b are formed corresponding to the longitudinal direction of the water channel 1.

The rake body 34 and the rake frame 3
3 and 4, brackets 36 and 32 are respectively provided on the lower surface of the short claw of the rake body 34 and the rear surface of the base of the rake frame 30 so as to correspond to both ends in the longitudinal direction. The rake body 34 is swingably attached to the rake frame 30 by penetrating the support shaft 40 extending in the width direction across the brackets 36 and 32. Specifically, the rake body 34 contacts the web surface of the rake frame 30 and
And the surface of the rake body 34 with respect to the advancing direction (the state shown by the solid line in FIG. 4). The rake body 34 is swingably attached to the inclined flat posture (the state shown by the two-dot chain line in FIG. 4).

At both longitudinal ends of the rake body 34 and the rake frame 30, brackets 42 and 30c are formed on the lower surface of the long claws of the rake body 34 and the base surface of the rake frame 30, respectively. The spring 44 is mounted over 30c, and when no external force is applied, the rake body 34 is urged by the spring force to be held in the upright posture. In FIG. 3, reference numeral 31 denotes a cutout formed in the web 30b of the rake frame 30 so that the spring 44 is released as the rake body 34 swings.

The rake body 34 is further provided with a cam 38 (cam member) integrally with the bracket 36, and this cam 38 is disposed near the lower end of the body frame 11 as shown in FIG. The guide member 80 slides. The guide member 80 is made of, for example, a thin steel plate or the like. When the rake 16 descends downstream of the screen 12 or the like and reaches near the lower end of the screen 12, the notch 33 formed in the rake body 34 (FIG. 3). ), The cam 38 slides on the guide member 80, and rotates the cam 38 with the advance of the rake 16 to cause the rake body 34 to rotate.
Is gradually displaced from the standing posture to the prone posture against the spring force of the spring 44, and the rake body 34 is gradually raised by the urging force of the spring 44 as the rake 16 is inverted to the upstream side of the screen 12. It is formed so as to return to.

As shown in FIG. 2, the scraper 18 includes a pair of substantially L-shaped arms 67 rotatably supported at the upper end of each side plate 24 of the main body frame 11 via a support shaft 70. A guide plate 68 extending in the width direction is joined between the arms 67. A spring 72 is attached to each arm 67 between each arm 67 and each side plate 24. When no external force acts on the arm 67, the spring force of the spring 72 causes the tip of the guide plate 68 to apron as shown in FIG. 14 is held near the upper end. When the rake 16 rises along the screen 12 or the like and reaches the upper end of the apron 14, the tip of the guide plate 68 is configured to contact the rake body surface of the rake 16 to scrape off dust as described later. I have.

As shown in FIG. 2, the auxiliary screen 19 has bar-shaped bars 73 extending in the vertical direction arranged in the width direction at the same interval as the bars 12a of the screen 12, and their base ends are connected to the connecting plate. It is configured by being integrally connected by 74.

The auxiliary screen 19 is disposed at the bottom of the waterway 1 by a hinge 76 so as to be swingable at the stepped portion 3, and is normally inclined by its own weight toward the downstream side of the waterway 1. Each bar 12a of the screen 12 has
The three tips are in contact. This allows the screen 1
It is configured to close a gap between the lower end of the second and the water bottom and capture dust that flows on the water bottom.

In FIG. 2, reference numeral 86 denotes a management bridge downstream of the dust removing device 10 and bridged over the water channel 1. On this management bridge 86, a trough 88 is provided. Dust scraped off from the rake 16 by the scraper 18 is guided to the side of the water channel 1 through the trough 88.

According to the dust removing device 10 described above, when the running water contains dust, when the running water passes through the screen 12 or the auxiliary screen 19, the screen 12, 1
9 captured. At this time, dust such as algae floating in the flowing water is captured by the screen 12, and dust flowing down along the water bottom such as an empty can is captured by the auxiliary screen 19.

While the dust is thus captured, the rake 16 moves around by the operation of the drive motor 66, so that the dust captured by the screens 12 and 19 is lifted by the trough 88. Will be introduced.

This operation will be described in more detail.
The rake 16 first descends on the rear surface side of the apron 14 in the above-described inverted position. At this time, the rake body 34 is
The upright posture is maintained by the urging force as shown in FIG. When the rake 16 approaches the lower end of the screen 12, FIG. 5 (a) → FIG. 5 (b) → FIG. 6 (a) → FIG. 6 (b)
As shown in FIG. 7, the cam 38 rotates while sliding on the guide member 80, and accordingly, the rake body 34 gradually swings from the standing posture to the prone posture against the urging force of the spring 44. Rake 1 in a state where the rake body 34 is in the prone position.
6 moves to the upstream side of the screen 12 through the lower end of the screen 12.

When the rake 16 moves to the upstream side of the screen 12 in this manner, the rake 16 reverses from the above-mentioned reverse position to the normal position, and the cam 38 as shown in FIG. 7 (a) → FIG. 7 (b) → FIG. Is released from the guide member 80, whereby the rake body 34 returns to the upright posture by the urging force of the spring 44, and rises along the screen 12 in this state.

When ascending, each short claw 34 of the rake body 34
a is interposed between the bars 12a of the screen 12, while the long claws 34b are interposed between the bars 73 of the auxiliary screen 19, whereby the dust caught by each screen 12 is reduced by the short claws 34a. Auxiliary screen 19
The garbage trapped by the is caught by the long claws 34b. At this time, the auxiliary screen 1
9 shows that the rake 16 rises, and FIG.
When the rake 16 is completely passed, it oscillates while being pushed up by the rake 16 and returns to its original state under its own weight.

Thus, the screen 12 and the apron 14
Dust is scooped up along the lake, and rake 16 is apron 1
When reaching the upper end of FIG. 4, FIG. 9 (a) → (b) → (c)
As the rake 16 reversely moves from the upper end of the apron 14 to the downstream side, the guide plate 68 of the scraper 18 comes into contact with the surface of the rake body 34 and slides from the base end to the tip end as shown in FIG. . As a result, dust is removed from the rake 16 by the tip of the guide plate 68, and the removed dust slides down on the surface of the guide plate 68 by its own weight and is guided into the trough 88. At this time, as the rake 16 reverses, the scraper 18 is pushed up against the urging force of the spring 72, and the tip of the guide plate 68 is pressed against the surface of the rake body 34 by this resistance, and the dust is firmly removed. Is done. And rake 16 is completely apron 1
4, the scraper 18 returns to the original state shown in FIG. 2 by the urging force of the spring 72.

Thereafter, similarly, when the two rakes 16 similarly move around, the dust is scooped up along the screen 12 and the apron 14, and is introduced into the trough 88 by the scraper 18.

According to the dust removing apparatus 10 configured as described above, the rake body 34 of the rake 16 can be swingably displaced between the upright posture and the prone posture as described above.
When passing through the lower end of the rake 2, the rake 16 is moved while the rake body is held in the prone position. As compared with the device, the step of the step 3 formed on the water bottom 1b can be reduced. For example, the one-dot chain line in FIG. 6A is the rake lower end position when the rake main body 34 is fixed to the rake frame 30 in an upright posture, that is, the rake lower end position in this type of conventional dust removing device. When the device 10 is compared with the conventional device, the dust removing device 10 can reduce the level difference by the amount indicated by the symbol h in the drawing.

Therefore, even if the size of the rake body 34 is effectively increased in the longitudinal direction of the water channel 1, the step of the water bottom 1 b can be suppressed, thereby extending the construction period. And high cost can be effectively avoided.

In the dust removing apparatus 10, the rake frame 30 and the rake main body 34 are connected via a spring 44, thereby urging the rake main body 34 to be in an upright posture. Rake body 3 when frying
The spring 44 may be omitted by setting the support position and the like of the rake body 34 so that the rake body 4 can be held in the upright posture.

The dust removing device 10 lowers the rake 16 on the downstream side of the screen 12 or the like and raises the rake 16 on the upstream side of the screen 12 or the like. The present invention is applied to a dust remover of a type configured to scoop up the rake. The present invention can be applied to a type of dust removing device in which dust is scraped up by projecting to the upstream side through the gap. In this case, the auxiliary screen 19 is integrated with the screen 12.

[0040]

As described above, according to the present invention, the rake is moved along the screen interposed in the waterway while moving the rake in the vertical direction, so that the dust caught by the screen is scraped by the rake. In the dust removing device for fry, the rake is composed of a frame moving along a track and a rake body supported by the frame, and the rake body can be swingably displaced into a standing posture and a prone posture, Since the rake body is held in a flat position at the lower end of the orbital movement stroke, the rake body is enlarged to effectively capture the dust flowing down along the water bottom, while effectively reducing the level difference on the water bottom. Therefore, dust removal performance can be rationally enhanced.

[Brief description of the drawings]

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

FIG. 2 shows an embodiment of a dust removing apparatus according to the present invention.
It is AA sectional drawing of.

FIG. 3 shows an embodiment of a dust removing apparatus according to the present invention.
It is BB sectional drawing of.

FIG. 4 is a cross-sectional view taken along the line CC of FIG. 3, showing a configuration of a positive rake.

FIG. 5 is a schematic sectional view corresponding to FIG. 2 showing the operation of the rake.

FIG. 6 is a schematic sectional view corresponding to FIG. 2 showing the operation of the rake.

FIG. 7 is a schematic sectional view corresponding to FIG. 2 and showing the operation of the rake.

FIG. 8 is a schematic sectional view corresponding to FIG. 2 showing the operation of the rake.

FIG. 9 is a schematic sectional view corresponding to FIG. 2 and showing the operation of the scraper.

FIG. 10 is a perspective view showing a conventional dust removing device.

[Description of Signs] 1 Waterway 10 Dust remover 12 Screen 14 Apron 16 Rake 30 Rake frame 34 Rake body 38 Cam 47 Guide section 80 Guide member

Claims (3)

[Claims] 1. A screen interposed in a waterway for capturing dust flowing down, and moving up and down along a track while climbing along the surface of the screen in the process to scoop up the dust. In a dust remover provided with a rake, the rake comprises a frame that moves along the track, and a rake body that is provided with a rake surface for scraping dust and is supported by the frame, The rake body is supported on the frame in such a manner that the rake body is swingably displaceable between an upright posture and an inclined flat posture that is substantially perpendicular to the traveling direction during the orbital movement, while the rake orbital movement of the rake is performed. A dust removing device, comprising: a posture restricting means for setting the rake body to a flat posture at a lower end portion of a moving stroke at the time. 2. The cam control device according to claim 1, wherein the attitude regulating means includes a guide member attached to a lower end portion of the screen, and a cam member coupled to the rake body and slidingly contacting the guide member as the rake moves around. The dust removing device according to claim 1, wherein the guide member and the cam member are configured so that the rake body is brought into a flat posture by sliding contact with the guide member. 3. The dust removing device according to claim 1, further comprising an urging means for urging the rake main body so as to hold the rake main body in an upright posture.