JP2002069974A - Refuse removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refuse removing device rejecting refuse while rotating an endless screen capable of rationalizing and simplifying the structure and improving durability and reliability. SOLUTION: An endless screen 12 is arranged in a waterway 1 in a satate that the screen is hung over on a pair of upper and lower rotary bodies 40 to constitute the refuse removing device 10 so as to pull up refuse caught by the screen to the water surface while rotating the screen 12 by rotating the rotary body 40. The screen 12 is so constituted that a plurality of unit frames 20 are mutually connected through joint pins 28. The joint pin 28 is hung over on the rotary bodies 40 in a state that the pin 28 is engaged with the sprockets 42 of the rotary bodies 40. Meanwhile, the joint pin 28 is equipped with rollers 30, and the sprocket 42 is forced to engage with the joint pin 28 through the rollers 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust remover for rotating and driving an endless screen provided in a waterway or the like, and capturing and removing dust such as algae and grass clumps flowing down the waterway by the screen. It concerns the device.

[0002]

2. Description of the Related Art Conventionally, as a dust removing apparatus as described above, for example, an endless metal net-like member (screen) is rotatably installed in a water channel, and the screen flows down the water channel. And capture the garbage
There is generally known a dust removing device configured to pull up dust trapped by rotating the screen above the water surface to remove the dust outside the water channel.

[0003] In this type of dust removal apparatus, the screen is generally supported in a state of being hung over a pair of upper and lower rotating bodies, and is fixed over the entire periphery of a side edge (both ends in the width direction) of the screen. The roller chain is configured to mesh with a sprocket provided on the rotating body. When the rotating body is rotationally driven by a motor or the like, the rotational driving force is transmitted to the screen via a sprocket and a roller chain, whereby the screen is rotated.

[0004]

In the above-described dust removing apparatus, the roller chain is usually fixed to the screen by bolts and nuts. If the roller chain is severely damaged and the bolts fall off, the roller chain may partially come off the screen, which may hinder driving.

Conventionally, frequent maintenance is required in order to prevent such troubles from occurring, and there has been a problem that the labor is excessive.

On the other hand, there has been a demand for rationalization and simplification of the structure to reduce costs and the like, and it is necessary to cope with this.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. A dust removing apparatus for removing dust while rotating an endless screen has a structure that is rationally simplified while maintaining durability and reliability. The purpose is to improve the performance.

[0008]

In order to solve the above-mentioned problems, the present invention has an endless screen rotatably capturing dust and has a gear member meshed with the screen. In a dust removal device that rotates a screen by rotating a gear member, a screen is formed by a plurality of unit frames being rotatably connected to each other via a connection shaft in a state of being arranged in a rotation direction of the screen. And the gear member is configured to apply a rotational driving force to the screen by meshing with the connection shaft connecting the unit frames (claim 1).

In this device, a connecting shaft for connecting the unit frames is also used as a meshed portion of the gear member. Therefore, unlike the conventional apparatus, it is not necessary to attach the roller chain to the screen as the meshed portion of the gear member, and the structure can be simplified rationally. Further, since the roller chain itself becomes unnecessary, the problem of driving failure due to the roller chain falling off is eliminated, and the durability and reliability of the dust removing device can be improved.

In this configuration, it is more preferable that a roller member is rotatably supported on the connection shaft, and the gear member is meshed with the connection shaft via the roller member.

According to this configuration, the frictional resistance at the time of engagement between the connecting shaft and the gear member is reduced, so that the screen can be driven smoothly. Further, wear of the connecting shaft can be effectively prevented.

In this case, it is more preferable that the roller member is made of a nonmetallic material having wear resistance.

According to this configuration, it is possible to suppress deterioration and damage of the roller member due to wear, rust, and the like, and it is possible to improve the durability of the roller member.

[0014] The above construction is, for example, a type of dust removing device in which the screen is interposed in the water channel so that the peripheral surface (dust capturing surface) of the screen is orthogonal to the longitudinal direction of the water channel. Alternatively, the present invention can be applied to any type of dust remover in which a water flow is introduced into the screen and the water flow is guided downstream through the screen peripheral surface (claim 5).

[0015]

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

FIG. 1 schematically shows a dust removing apparatus according to the present invention. In these drawings, only the main components of the dust removing device are extracted and shown, and a frame portion for supporting the entire device is omitted.

The dust removing device 10 shown in FIG. 1 has a screen 12 for capturing dust flowing down the water channel 1, a driving mechanism for driving the screen 12, and a device for dropping the captured dust from the screen 12 to outside the water channel. And a removing device 14 for guiding.

The screen 12 is an endless belt-like member, and its peripheral surface (the peripheral surface of the screen) is orthogonal to the longitudinal direction of the water channel 1 in a state of being hung over a rotating body 40 to be described later.
And it is arrange | positioned between the side walls 2 of the waterway 1 so that an upper part may be exposed above a water surface.

The screen 12 will be described in more detail. As shown in FIGS. 2 to 5, the screen 12 has a plurality of unit frames 20, and these unit frames 20 are connected endlessly. .

Each unit frame 20 has a pair of side plates 22, and a "U" -shape in front view having a shelf 24 extending between the side plates 22 toward the outside of the screen 12 (the left side in FIG. 4). The shape is.

Each side plate 22 has a frame width direction (a width direction of the screen 12) at its upper end (the upper end in FIG. 3).
In FIG. 3, a pair of connecting pins 28 (connecting shafts) extending outward in the left-right direction (hereinafter, simply referred to as the width direction) is provided, and the side plate 22 extends downward at the lower end (lower end in FIG. 2). The connecting plates 26 are respectively fixed.

As shown in FIGS. 3 and 4, each connecting plate 26 of each unit frame 20 is rotatably connected to a connecting pin 28 of an adjacent unit frame 20 so as to be rotatable. The unit frame 20 has a caterpillar shape,
That is, they are connected endlessly with flexibility. As shown in FIG. 5, a slender net 21 is arranged over the entire circumference of each unit frame 20 connected endlessly, and the net 21 is fixed to each unit frame 20. Thus, the screen 12 is configured.

A roller 30 (roller member) is rotatably supported from the outside of the connecting plate 26 to the connecting portion of each unit frame 20, ie, the connecting pin 28 in the screen 12. The roller 30 is made of, for example, a hard resin material having wear resistance.

As shown in FIGS. 1 and 2, the screen 12 is stretched over a pair of rotating bodies 40 provided above the water channel 1 and at the bottom of the water channel.

Each rotator 40 has a shaft 44 extending in the width direction of the water channel 1, and the shaft 44 is provided with a pair of sprockets 42 at a predetermined interval. As shown in FIG. 2, the roller 30 and the sprocket 42 are wrapped around both rotating bodies 40 so as to mesh with each other, that is, the connecting pin 28 and the sprocket 42 mesh with each other via the roller 30.

As shown in FIG. 1, a pulley 45 is fixed to a shaft 44 of the rotating body 40 above the water channel among the pair of rotating bodies 40. The pulley 45 and the rotating body 4
A conduction belt 46 is attached to a pulley 48 of a motor 47 disposed on the side of the motor 47. As a result, when the motor 47 is operated, the rotational driving force is transmitted to the rotating body 40, and the screen 12 stretched over the rotating body 40 rotates (circularly moves). That is, a driving mechanism of the screen 12 is constituted by the rotating body 40, the motor 47, the conduction belt 46, and the like.

When the screen 12 is driven,
As described above, since the sprocket 42 of each rotating body 40 meshes with the connecting pin 28 via the roller 30, the frictional resistance at the time of meshing is reduced as compared with the case where the roller 30 is not provided, thereby the screen 12 can be driven smoothly.

On the other hand, as shown in FIGS. 1 and 4, the removing device 14 has a spray device 52 disposed inside the screen 12 and directly below the upper rotating body 40, And a trough 54 disposed on the opposite side (downstream side) of the spray device 52.

The spray device 52 is a pump that is installed at the bottom of the water channel, for example, while pumping up running water while the screen 12 is being pumped.
It is configured to inject water at high pressure toward
Thus, the dust entangled with the screen 12 is removed by water pressure. On the other hand, the trough 54
It is configured such that dust falling off the screen 12 by the action of the spray device 14 is collected and guided to the side of the water channel. Although not shown in FIG. 1, a conveyor is provided on the side of the water channel 1, and dust guided to the side of the water channel by the trough 54 is further transferred to a solid-liquid separator or the like (not shown) by the conveyor. It is designed to be transported.

In the configuration of the dust removing device 10 described above, the flowing water in the water channel 1 flows downstream through the peripheral surface of the screen 12 as shown by the white arrow in FIG. Therefore, if the water contains dust, the running water is trapped when passing through the peripheral surface of the screen 12, that is, the portion of the net 21.

While the dust is thus captured, the screen 12 is moved by the operation of the motor 47 as shown in FIG.
The garbage is driven to rotate in the direction shown by the arrow, and the garbage captured thereby is pulled up from the water with the rotation of the screen 12. Then, when the dust reaches the upper end portion of the screen (the position of the upper rotating body 40) with the rotation of the screen 12, when the screen 12 is turned over, the dust drops into the trough 54 by its own weight and is collected. It will be. At this time, dust that is entangled with the screen 12 and does not fall by its own weight is carried to a position facing the spraying device 52 with the rotation of the screen 12, where the pressure of the water sprayed from the spraying device 52 causes the screen 12 to rotate. And is collected in the trough 54. Then, the collected dust is carried out to the solid-liquid separation device by the trough 54 and the conveyor.

According to the dust removing apparatus 10 as described above, the dust in the water channel 1 can be satisfactorily removed with the rotation of the screen 12 as in the case of this type of conventional dust removing apparatus.

Further, structurally, the roller 30 is connected to the connecting pin 28 of each unit frame 20 constituting the screen 12.
The sprocket 42 of the rotator 40 is meshed with the sprocket 42 through the interface to transmit the rotational driving force to the screen 12, that is, since the connecting pin 28 is also used as the meshed portion of the sprocket 42, The configuration of the dust removing device 10 is reasonably simplified as compared with a conventional device in which a dedicated member such as a roller chain needs to be separately provided as a meshed portion. Therefore, it is possible to contribute to improvement of the assemblability of the dust removing device 10 or reduction of the cost.

Further, since the roller chain and the like become unnecessary as described above, the problem of the conventional apparatus such that the roller chain falls off the screen and hinders the driving can be solved, thereby improving the durability and reliability of the apparatus. Can also be improved. The improvement of the durability and the reliability makes it possible to reduce the frequency of the maintenance cycle, and as a result, the labor required for the maintenance can be greatly reduced.

The dust removing device 10 described above is one embodiment of the dust removing device according to the present invention, and the specific configuration thereof can be changed as appropriate without departing from the gist of the present invention.

For example, in the dust removing device 10, a screen 12A as shown in FIGS. Hereinafter, the screen 12A will be briefly described. Members common to the screen 12 shown in FIG. 2 and the like are denoted by the same reference numerals.

The screen 12A is also formed by connecting a plurality of unit frames 20 endlessly. The shape of each unit frame 20 is such that the central portion is open as shown in FIG. And a metal net 32 is attached to the opening.

On the side plate 22 of the unit frame 20, similarly to the screen 12, the connecting plate 26 and the connecting pin 28
Are provided, and the adjacent unit frames 20 are connected by the connecting plate 26 and the connecting pins 28. Then, as shown in FIG. 8, a band-shaped member 34 made of synthetic rubber or the like is fixed over the front end and the rear end of the adjacent unit frame 20, thereby closing the gap between the adjacent unit frames 20. Is peeling.

That is, the screen 12 shown in FIG.
In FIG. 7, a single elongated net 21 is attached over the entire periphery of the unit frame 20 connected endlessly to form a screen peripheral surface, that is, a surface for catching dust. In the screen 12 </ b> A shown in FIG. 4, a dust capturing surface by the net 32 is formed in each unit frame 20, and by connecting the unit frames 20, the dust capturing surface by the net 32 is continuously formed on the screen peripheral surface. Is configured.

The screen 12A shown in FIG.
According to this, even when the net 32 is damaged due to breakage or the like, it can be easily dealt with only by replacing the corresponding unit frame 20 alone. Therefore, there is an advantage that maintainability is improved.

In the dust removing device 10 of the above embodiment,
The sprocket 42 is inserted from the inside of the screen 12 into the screen 1
For example, a guide member that guides both edges in the width direction of the screen 12 is provided to rotatably support the screen 12, and the rotating body 40 is disposed outside the screen 12. By doing, sprocket 4
2 may be configured to mesh with the screen 12 from outside the screen 12.

In the above-described embodiment, the dust removing device 10 of the type in which the falling dust is captured on the outer peripheral surface of the screen 12 has been described. However, the present invention is directed to the inner peripheral surface of the screen while introducing a water flow inside the screen. The present invention can also be applied to a type of dust removal device that captures dust on the surface. Hereinafter, a case where the present invention is applied to this type of dust removing apparatus will be briefly described with reference to FIG. In the following description, the same reference numerals are given to members common to the above-described dust removing apparatus 10, and the description thereof is omitted. Only different points will be described in detail.

In the dust removing apparatus 10 'shown in this figure, the screen 12 is composed of the partition wall 3 protruding into the water channel 1 and the partition wall 3.
The screen is arranged so that the peripheral surface of the screen is parallel to the longitudinal direction of the water channel 1 between the water column 1 and an intermediate support wall 4 erected at the center of the water channel 1.

Although the structure of the screen 12 and its driving system is basically the same as that of the dust removing apparatus 10 shown in FIG. 1 and the like, in this dust removing apparatus 10 ′, the shelf 24 is provided on the inner peripheral surface side of the screen 12. In this regard, the dust removing device 10
And the configuration is different.

As shown in the drawing, the removing device 14 has a trough 54 disposed inside the screen 12 and directly below the upper rotating body 40, and is opposite to the spray device 52 with the screen 12 interposed therebetween. Spray device 5 (upper)
2 are arranged.

According to the dust removing device 10 ', the water flow is introduced into the inside of the screen 12 through the inlet 3a formed in the partition 3, as shown by the white arrow in FIG. To the downstream side via. As a result, the dust contained in the water stream is
When the light is transmitted, the light is captured on the inner peripheral surface of the screen. On the other hand, when the screen 12 is driven to rotate by the operation of the motor 47, the captured dust is pulled up from the water with the rotational movement of the screen 12, and is carried to a position facing the spray device 52, where Is collected from the screen 12 into the trough 54 by the pressure of the water jetted from the spray device 52.

[0047]

As described above, in the dust removing apparatus of the present invention, a screen is formed by connecting a plurality of unit frames to each other through the connecting shaft, and the gear member is meshed with the connecting shaft. Since the screen is driven to rotate, there is no need to mount a roller chain on the screen as a meshed portion of the gear member unlike the conventional apparatus. Therefore, the device structure can be reasonably simplified. In addition, since the roller chain is not required, the problem of drive failure due to the roller chain falling off is eliminated, and the durability and reliability of the dust removing device can be improved.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a screen and a part of its driving mechanism.

FIG. 3 is an A perspective view of FIG. 2 showing a configuration of a screen.

FIG. 4 is a side view showing the configuration of the screen (a view as seen from the arrow B in FIG. 3).

FIG. 5 is a cross-sectional view taken along the line CC of FIG. 3, showing the configuration of the screen.

FIG. 6 is a view corresponding to FIG. 3 and showing a modification of the screen.

FIG. 7 is a sectional view taken along the line DD of FIG. 6, showing the configuration of the screen.

FIG. 8 is a cross-sectional view showing a configuration of a screen (a connection portion between unit frames).

FIG. 9 is a schematic perspective view showing a modification of the dust removing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway 10 Dust remover 12 Screen 20 Unit frame 28 Connecting pin 30 Roller 32 Net 40 Rotating body 42 Sprocket 23 Drive roller 24 Motor

Claims (5)

[Claims] 1. A dust removing device having a rotatable endless screen for capturing dust and rotating the gear member by rotating the gear member while meshing the gear member with the screen. In the above, the screen has a plurality of unit frames, and these unit frames are configured by being rotatably connected to each other via a connection shaft in a state where the unit frames are arranged in the rotation direction of the screen, The dust remover, wherein the gear member is configured to apply a rotational driving force to the screen by meshing with the connection shaft. 2. The dust removing apparatus according to claim 1, wherein a roller member is rotatably supported on the connecting shaft, and the gear member meshes with the connecting shaft via the roller member. apparatus. 3. The dust removing device according to claim 1, wherein the roller member is made of a non-metallic material having abrasion resistance. 4. The dust removing device according to claim 1, wherein the screen is provided in the water channel such that a peripheral surface thereof is orthogonal to a longitudinal direction of the water channel. Dust removal device. 5. The dust removing apparatus according to claim 1, wherein the flow path is configured to guide the water flow to the downstream side through the peripheral surface of the screen while introducing the water flow inside the screen. A dust remover characterized by the above-mentioned.