JP2000129655A - Dust remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact device at a low cost in a dust remover capable of collecting dirt and dust such as lumps of algae or grass flowing in a channel or the like raked up by a rake while catching the dirt and dust through a screen. SOLUTION: A dust remover is constituted of a screen 10 provided to a channel Ws and a device main body 12 raking up dust caught by the screen 10. The device main body 12 provides an oscillation frame 14b oscillating by driving of an electric cylinder 16 to a fixed frame 14a mounted across the channel Ws, a pair of guides 18 are fixed to the oscillation frame 14b and, at the same time, a rake 20 is provided to the guides 18. A rack bar 24 is connected to the rake 20, and a pinion 26 rotated and driven by a motor 30 mounted on the fixed frame 14a is engaged with the rack bar 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a dust removing device as shown in FIGS. 5 and 6 has been known as a dust removing device that captures dust such as algae and grass clumps flowing in a water channel and removes the dust outside the water channel.

[0003] As shown in FIG. 1, the dust removing device includes a screen 51 provided in a water channel 50 and a screen 5.
And a device main body 52 for scooping up the garbage caught by 1 and carrying it out of the waterway.
A rake 54 (rake-like raking member) for scraping dust along the screen 51 and a drive mechanism for raising and lowering and swinging the rake 54 are provided.

The driving mechanism includes a vertically extending columnar arm 56 and a support 58 for supporting the arm 56 so as to be able to move up and down in the longitudinal direction. The rake 54 is provided at the tip (lower end) of the arm 56. It is fixed to. Support 5
The pinion 8 supports a pinion 62 driven by a motor 60, and the pinion 62 meshes with a rack 57 provided on a side surface of the arm 56. The support base 58 is swingably supported by the frame 52 a of the apparatus main body 52, and is driven by the electric cylinder 64. That is, when the motor 60 is driven to rotate forward and backward, this rotational motion is transmitted to the pinion 62 and the rack 57.
Is converted into a linear motion of the arm 56, thereby raising and lowering the rake 54, and when the electric cylinder 64 is driven to expand and contract, the support base 58 swings accordingly, whereby the arm 56 and the rake And 54 swing together. Then, at the time of work, the rake 54 moves in the order of the numbers →→ in the figure from the state shown by the solid line in FIG. 5 by the drive of the motor 60 and the electric cylinder 64, whereby the dust caught by the screen 51 is moved by the rake 54. They are scraped and removed.

[0005]

In the conventional apparatus as described above, the rake 54 is fixed to the tip of the arm 56 as described above, and the rake 54 is operated by driving the arm 56 up and down. And the arm 56
The rake 54 plays a role of both a driving member and a guide member. Therefore, a high strength is required for the arm 56, and the arm 56 tends to be large.

However, when the size of the arm 56 is increased as described above, the support 58 and the like for supporting the arm 56 are required to have high strength, which is one of the factors contributing to the increase in the size of the apparatus. Further, since the load at the time of raising and lowering the arm increases with the size of the arm 56, a large-sized motor with high output is required as the motor 60, which is another factor for increasing the size of the apparatus.

[0007] However, even in this type of dust remover, downsizing and cost reduction are demanded in the times, and it is difficult for the above-mentioned conventional configuration to meet such needs.

The present invention has been made to solve the above problems, and has as its object to provide a more compact and lower cost dust removing apparatus.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a dust removing apparatus for catching dust in a waterway or the like by a screen and removing the trapped dust by rake with a rake. At least one guide extending toward the water bottom along the guide, a rake mounted on the guide so as to be able to move up and down, and a lifting drive mechanism for moving the rake up and down along the guide. .

In this apparatus, a guide for raising and lowering the rake and a driving member for driving the rake up and down are provided separately, and the rake and a driving member (part of the raising and lowering driving mechanism) connected thereto are raised and lowered during operation. Is done. Therefore, it is possible to reduce the load at the time of raising and lowering the rake as compared with a conventional device of this type in which a member functioning as a guide at the time of raising and lowering the rake is raised and lowered integrally with the rake.

In this device, it is preferable to provide a pair of guides parallel to each other, and to mount both ends of the rake in the width direction to the guides. This makes it possible to raise and lower the rake smoothly in a well-balanced manner during work.

The elevating drive mechanism can be constituted by a shaft connected to the rake and extending along the guide, and a movable means for moving the shaft in the longitudinal direction. In this case, the movable means may be configured to include a rack provided on the shaft, a pinion that meshes with the rack, and a motor that rotationally drives the pinion. According to this configuration, the shaft body is moved in the longitudinal direction by the forward / reverse rotation drive of the motor, and accordingly, the rake is integrally moved up and down along the guide.

In this device, the guide may be swingably supported between a position where the lower end of the guide is near the water bottom and a position where the lower end is on the water surface. By doing so, the guide can be raised above the water surface except during work, and corrosion of the guide, adhesion of foreign matter, and the like can be avoided. Further, convenience during maintenance is improved. In this case, a motor-driven reel is provided as a rocking drive mechanism for rocking the guide, and the leading end of the rope wound around the reel is connected to the lower end of the guide, and the rope is driven by driving the reel. If the guide is caused to swing in accordance with the body feeding and winding operations (claim 6), the guide can be automatically swung and displaced, and the workability is improved.

[0014]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show an example of a dust removing apparatus according to the present invention. As shown in this figure, the dust removing device includes a screen 10 interposed in the water channel Ws, and a device main body 12 that scrapes up dust such as algae and grass clumps captured by the screen 10. .

The screen 10 is a so-called bar screen in which bars are arranged at regular intervals in the width direction of the water channel Ws (the left-right direction in FIG. 1; hereinafter, simply referred to as the width direction).
Metal bars are juxtaposed at intervals of about 0 mm, and the bars are configured to catch dust. Further, the upper end of the screen 10 is extended to above the water channel Ws, so that dust can be scraped out of the water channel by a rake 20 described later. In addition, as the screen 10, a screen having a mesh-shaped dust collecting surface so as to capture finer dust can be applied in addition to the bar screen of this type.

The apparatus main body 12 includes a fixed frame 1 installed over the water channel Ws above the screen 10.
4a, the frame 14a is provided with a rake 20 for scraping up the trapped dust and a drive mechanism for moving the rake 20 up and down and swinging.

The rake 20 is, for example, a screen 1
It has an elongated frame in the width direction of 0, and has a number of claws arranged side by side, and is configured to be lifted from the bottom of the water along the screen 10 so that dust caught by the screen 10 is scooped up. I have.

The drive mechanism for raising and lowering and swinging the rake 20 is configured as follows. That is, the fixed frame 14a is provided with a shaft 15 extending in the width direction, and the swing frame 14b is rotatably supported by the shaft 15. The distal end of a piston rod of an electric cylinder 16 mounted on the fixed frame 14a is rotatably connected to the swing frame 14b, whereby the swing frame 14b is moved in accordance with the expansion and contraction drive of the electric cylinder 16. It swings around the shaft 15.

The swing frame 14b has a pair of guides 1 extending vertically and reaching near the bottom of the waterway Ws.
8 are attached. These guides 18 have a U-shaped cross section, and have a predetermined interval in the width direction, for example, an interval slightly wider than the width of the screen 10, and the openings of the guides 18 oppose each other in the width direction. Respectively, are fixed to the swing frame 14b. An upper rake 20 is interposed between the guides 18 and supported so as to be able to move up and down along the guides 18. Specifically, rollers 22 are rotatably mounted on both ends in the width direction of the rake 20, and the rollers 22 are interposed in recesses of the guides 18 so that the rake 20 is mounted on the guides 18 so as to be able to move up and down. . Although not shown, a stopper is provided at the lower end of each guide 18 to prevent the rake 20 from dropping off the guide 18.

A pair of rack bars 24 extending parallel to the guides 18 are supported on the swing frame 14b so as to be movable in the longitudinal direction, and the lower ends of the rack bars 24 are connected to both ends of the rake 20 respectively. Connected to the department. The motor 30 is mounted on the swing frame 14b.
And a drive shaft 28 in the width direction that is rotationally driven by the motor 30 via a speed reduction mechanism or the like.
8 are engaged with the rack rods 24, respectively, and the rack rods 24 are supported by support rollers 27 disposed on the opposite side of the pinion 26 with the rack rods 24 interposed therebetween. I have.

That is, when the motor 30 is driven forward and reverse in the apparatus main body 12, the rack bar 24 moves up and down with respect to the swing frame 14b, whereby the rake 20 connected to the rack bar 24 is moved. It moves up and down along the guide 18. The electric cylinder 1
When the swing frame 14b swings by the driving of the guide 6, the guide 18 swings integrally with the swing frame 14b, whereby the rake 20 is moved to a predetermined working position close to the screen 10 and retreated away from the screen 10. It is configured to swing to and fro position.

Reference numeral 32 in the drawing denotes a dust removing member called a scraper for sending out the dust scraped up along the screen 10 by the rake 20 from the upper end portion of the screen 10 to the outside of the water channel, and swings on the fixed frame 14a. It is freely supported. In this embodiment, the scraper 32 is a non-powered type. When the rake 20 reaches a specific height position when the rake is raised, the tip of the scraper 32 contacts the base end of the claw portion of the rake 20, and thereafter, the rake 20 As the scraper 32 rises, the tip of the scraper 32 moves from the base end to the tip of the claw portion of the rake 20 while swinging, thereby removing dust from the rake 20.

According to the above dust removing apparatus, usually,
As shown in FIG. 3A, the rake 20 is placed on the water surface at the above-mentioned working position, and in this state, the screen 10 captures dust in the water channel Ws. The reason why the rake 20 is held on the water surface in this way is to prevent the rake 20 from being corroded and from being entangled with dust such as algae, thereby preventing the rake 20 from operating.

Then, the rake 20 is driven at an appropriate time, for example, every day or every week, and the screen 10 is driven.
To remove the trapped dust.

In this case, first, as shown in FIG. 3B, the electric cylinder 16 is driven to swing the swing frame 14b and the guide 18 together, and the rake 20 is set to the retracted position. Thereafter, as shown in FIG. 3C, the motor 30 is driven to rotate forward to lower the rake 20 along the guide 18 to the lower end, and further, as shown in FIG. Drive to set the rake 20 to the working position.

Then, in this state, the rake 20 is raised along the screen 10 by inverting the motor 30, and the dust caught by the screen 10 is scooped up by the rake 20. At this time, although not shown, when the rake 20 is lifted, the scraper 32 comes into contact with the claw portion of the rake 20 and the scraped-up dust is removed from the rake 20 while the screen 1 is removed.
The water is discharged from the upper end of the water channel to the outside of the channel. As a result, the dust caught by the screen 10 is removed from the water channel Ws.

According to the apparatus main body 12 of the dust removing apparatus described above, the guide 18 is fixed to the fixed frame 14a as described above, and the rake 20 is moved up and down along the guide 18, so that this conventional type is used. It is possible to provide a more compact and lower-cost dust removing device than the device described in (1).

That is, in this type of conventional apparatus, as described in the related art, an arm is provided which functions as both a driving member and a guide member when the rake is raised and lowered, and the rake is attached to the tip of this arm. , The arm and rake are lifted and lowered together. For this reason, the arm is required to have extremely high strength, and the size of the arm is increased to increase the load when the rake is moved up and down. On the other hand, in the apparatus main body 12 of the above embodiment, as described above, the drive member and the guide member for raising and lowering the rake are provided independently as the guide 18 and the rack bar 24, and the guide 18 is fixed. Since only the rack bar 24 is moved up and down integrally with the rake 20, the load at the time of raising and lowering the rake can be reduced as compared with the conventional device because there is no need to raise and lower the guide member of the rake. And
Since the load at the time of raising and lowering the rake can be reduced in this manner, a small motor having a low output can be employed as the motor 30 as a drive source, and thereby, the size of the apparatus and the increase in cost can be suppressed. In addition, rack bar 2
The support structure 4 does not require a high-strength structure like the support structure of the arm of the conventional apparatus, and the configuration of the apparatus main body 12 is simplified accordingly. Therefore, the device body 12
According to this, a compact and low-cost dust removing device can be provided as compared with a conventional device of this type.

The above-described dust removing device is an example of the dust removing device according to the present invention, and its specific configuration can be changed as appropriate without departing from the gist of the present invention.

For example, in the apparatus main body 12 described above, the motor-driven pinion 2 is mounted on the rack rod 24 connected to the rake 20.
6 are engaged with each other, and the rake 20 is moved up and down along the guide 18 with the forward and reverse rotation of the motor 30.
The lifting drive mechanism is constructed in such a manner that, instead of the pinion 26, a reel wound with a rope or the like is attached to both ends of a drive shaft 28, and the tip of the rope is connected to the rake 20 instead of the rack bar 24. The guide 18 is driven by its own weight while sending the rope from the reel in accordance with the drive of the motor 30.
The rake 20 may be lowered along the guide 18 or the rake 20 may be raised along the guide 18 by winding up a rope. According to this configuration, unlike the apparatus main body 12 of the above-described embodiment, the rack bar 24 does not protrude upward from the apparatus when the rake 20 moves up and down.
This is advantageous when it is installed in a place where the height is restricted. In addition, when the lift distance (head) of the rake 20 becomes a high head,
In the apparatus main body 12 of the above-described embodiment, not only does the amount of projection of the rack bar 24 above the device increase, but also the load when the rake moves up and down increases as the size of the rack bar 24 increases. On the other hand, if the rake 20 is lifted and lowered via the rope as described above, there is no concern about a protruding object as described above, and an increase in the load at the time of lifting and lowering can be effectively performed. It is possible to suppress.

Further, as a raising and lowering drive mechanism of the rake 20, a screw shaft extending in parallel with the guide 18 is rotatably provided on the guide 18, and the rake 20 is screwed and mounted on the screw shaft. May be driven forward and reverse by a motor so that the rake 20 is moved up and down along the guide 18. In other words, the raising / lowering drive mechanism of the rake 20 only needs to be able to move the rake 20 along the guide 18, and the specific configuration may be appropriately selected based on the relationship with the cost and the like.

In the apparatus main body 12, the rake 20 is swingably displaced between the working position and the retracted position by swinging the swing frame 14b by driving the electric cylinder 16. Alternatively, the rake 20 may be oscillated by adopting a configuration as shown in FIG. That is, the reel 40 driven by the motor 42 is installed on the upstream side of the water channel Ws, and the leading end of the rope 43 (cord-like body) wound around the reel 40 is connected to the lower end portion of the guide 18 to drive the motor 42. Accordingly, the guide 18 may be displaced to the water bottom by its own weight while sending the rope 43 from the reel 40, or the guide 18 may be displaced by swinging by winding the rope 43. In this case, the electric cylinder 16 is unnecessary.

Although the rake device 12 is not employed, the guide 18 may be appropriately held on the water surface. That is, if the guide 18 is always placed in the water, dust is entangled with the guide 18 and the rake 2
0 may interfere with the operation of Guide 1.
If the guide 8 and the rake 20 can be held on the water surface, it is convenient for maintenance of the guide 18 and the rake 20. In this case, the fixed frame 14b may be swung by the electric cylinder 16 as in the case of the apparatus main body 12, and the guide 18 may be held on the water surface. Alternatively, as shown by a two-dot chain line in FIG. Alternatively, the guide 18 may be held on the water surface by winding the rope 43 around the reel 40.

In the apparatus main body 12, a pair of guides 18 are provided, and both ends of the rake 20 are guided by these guides 18. However, the number of guides is arbitrary, and one or three guides are provided. There may be more than one. However, in order to guide the rake 20 in a well-balanced and smooth manner, a pair of guides 18 like the device body 12 are used.
It is effective and rational to guide both ends of the rake 20 by means of.

[0035]

As described above, according to the present invention, a guide extending toward the water bottom along a screen is provided in a dust removing device for scavenging the trapped dust by a rake while catching dust in a water channel or the like by a screen. Is established,
Since the rake is moved up and down along this guide, the load at the time of raising and lowering the rake is reduced as compared with this type of conventional device in which a member corresponding to the guide member at the time of raising and lowering the rake is moved integrally. Can be. Therefore, a low-power drive source such as a motor for driving the rake up and down can be used, and the support structure of the members for driving the rake can be simplified. Therefore,
A compact and low-cost dust removing device can be provided.

In this apparatus, it is preferable to provide a pair of guides parallel to each other, and to attach both ends in the width direction of the rake to each guide. With this configuration, the rake can be smoothly moved in a well-balanced manner during the operation, and the operation can be performed smoothly.

The rake raising / lowering drive mechanism can be composed of a shaft joined to the rake and extending along the guide, and a movable means for moving the shaft in the axial direction. The means may be configured to include a rack provided on the shaft, a pinion that meshes with the rack, and a motor that rotationally drives the pinion. With this configuration, the shaft body moves in the longitudinal direction by the forward / reverse rotation drive of the motor, and the rake moves integrally along the guide. Accordingly, the rake can be moved up and down with a simple configuration.

In this device, the guide is
It is desirable that the lower end portion is supported so as to be able to swing over a position where it is near the water bottom and a position where it is on the water surface. By doing so, the guide can be raised above the water surface except during work, and the corrosion of the guide, the attachment of foreign matter, and the like can be avoided. Further, the convenience at the time of maintenance is improved. In this case, a motor-driven reel is provided as a rocking drive mechanism for rocking the guide, and the leading end of the rope wound around the reel is connected to the lower end of the guide, and the rope is driven by driving the reel. If the above-mentioned guide is swung with the sending out and winding operation of the body,
The guide can be automatically rocked and displaced, so that workability is improved.

[Brief description of the drawings]

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

FIG. 2 is a side view (partially sectional view) showing the dust removing apparatus according to the present invention.

FIG. 3 is a diagram illustrating the operation of the dust removing device.

FIG. 4 is a diagram corresponding to FIG. 2, showing another configuration of the dust removing device.

FIG. 5 is a side view (partially sectional view) showing a conventional dust removing device.

FIG. 6 is a schematic front view showing a configuration of a rake and an arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Screen 12 Main body 14a Fixed frame 14b Swing frame 16 Electric cylinder 18 Guide 20 Rake 22 Roller 24 Rack bar 26 Pinion 28 Drive shaft 30 Motor Ws Waterway

Claims (6)

[Claims] 1. A dust removing apparatus for scavenging and removing dust from a water channel or the like by a screen while catching the dust by a rake, wherein at least one guide extending toward the water bottom along the screen is provided. A rake mounted on the guide so as to be able to move up and down, and a lifting drive mechanism for moving the rake up and down along the guide. 2. The dust removing apparatus according to claim 1, further comprising a pair of guides parallel to each other, wherein both ends in the width direction of the rake are respectively mounted on the guides. 3. The lifting drive mechanism includes a shaft connected to the rake and extending along the guide, and a movable means for moving the shaft in a longitudinal direction thereof. The dust removing device according to claim 1. 4. The dust removing apparatus according to claim 3, wherein said movable means comprises a rack provided on said shaft, a pinion meshed with said rack, and a motor for rotating said pinion. 5. The guide according to claim 1, wherein the guide is swingably supported at a position where a lower end of the guide is near a water bottom and at a position on a water surface. Dust removal device. 6. A swing drive mechanism for swingingly displacing the guide, the swing drive mechanism including a motor-driven reel, and a tip end of a cord wound on the reel is a lower end of the guide. 6. The dust removing device according to claim 5, wherein the guide is pivoted in accordance with the feeding and winding operation of the cord by driving the reel.