JP3429262B2 - Dust removal device - Google Patents

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 rotatably driving an endless screen provided in a waterway or the like and capturing and removing dust such as algae or grass lumps flowing down the waterway by this screen. It relates to the device.

[0002]

2. Description of the Related Art Conventionally, as the above dust removing device, for example, an endless porous belt-shaped member (screen) is rotatably installed in a water channel, and the screen causes the water channel to flow down. While capturing the dust that
A dust removing device is generally known, which is configured so that the dust that is captured by rotating and driving the screen is raised above the water surface and removed outside the water channel.

In such a dust remover, the screen has a plurality of porous unit frames, and each unit frame is arranged in a line between a pair of endless roller chains. An endless structure is formed by fixing the frame to each roller chain. The roller chain is wound around a sprocket driven by a motor, and the screen is rotated (rotated) in accordance with the rotational driving of the sprocket.

[0004]

In the above conventional dust remover, a gap is formed between the unit frames constituting the screen because of the structure. Therefore, in general, a band-shaped connecting member is attached between the unit frames to form the gap. A seal is provided to prevent dust from flowing down between adjacent unit frames.

However, the connecting member as described above is generally made of rubber so as to secure the flexibility between the unit frames and to follow the variation of the gap due to the extension of the roller chain. Therefore, the gap between the unit frames is completely sealed, and the water permeability of the screen as a whole is greatly impaired. In other words, the structure is such that running water such as a water channel can be easily dammed. Therefore, it is necessary to improve the water permeability of the screen by modifying such a seal structure.

In this case, if it is possible to reduce the number of screen components and the number of assembling steps, it is preferable in order to reduce the manufacturing cost.

The present invention has been made to solve the above problems, and in a dust removing device for removing dust while rotating an endless screen, the dust is satisfactorily captured while the water permeability of the screen is increased. Is intended to improve.

[0008]

In order to solve the above-mentioned problems, the present invention provides a dust removing apparatus that captures dust with an endless screen and pulls the dust with the rotational movement of the screen. The unit frames are arranged in the rotation direction of the screen and are connected to each other to form the screen, and a plurality of unit protrusions are provided at both front and rear ends of each unit frame in the rotation direction of the screen. The comb-shaped projections arranged in the direction are provided, and the mutually opposed comb-shaped projections of the adjacent unit frames mesh with each other in a non-contact state to seal between the unit frames. ).

According to this structure, since the comb-shaped projections are engaged with each other between the adjacent unit frames, the dust can be effectively prevented from flowing down between the unit frames. Moreover, since the comb-like projections are meshed with each other in a non-contact state, the unit frames are not completely sealed, which ensures good water permeability of the screen. In addition, the flexibility between the unit frames is ensured, and even if the gap between the adjacent unit frames changes to some extent, the gap between the unit frames is well sealed due to the existence of the comb-shaped projections. In addition, in the description of claim 1, the term "seal" refers to a seal (that is, a seal against dust) in the sense of blocking the flow of dust.

In this structure, the unit frames adjacent to each other are rotated with respect to each other via the connecting shafts arranged between the unit frames and at both end portions in the width direction of each unit frame. It is preferable that the comb-shaped projections of the adjacent unit frames are connected to each other so that they can be meshed with each other coaxially with the connection shaft (claim 2).

With this configuration, as described in detail in the embodiment, it is possible to make the comb-shaped projection compact and simple.

In the dust removing device according to the first or second aspect, it is preferable that the comb-shaped projection is formed integrally with the unit frame (claim 3).

According to this structure, when the screen is manufactured, the unit frames can be sealed by simply connecting the unit frames. Therefore, unlike the conventional structure, it is not necessary to separately assemble a connecting member or the like between the unit frames, and it is possible to reduce the number of parts and the number of assembling steps.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

1 and 2 schematically show a dust removing device according to the present invention. In addition, in order to make the configuration of the dust removing device more understandable, these drawings are shown with the device partially broken and partially omitted.

As shown in FIG. 1, the dust removing device 10 has a screen 12 for capturing dust particles flowing through the water channel 1, a drive mechanism for driving the screen 12, and the captured dust particles falling off the screen 12 to capture the dust particles. And a removal device 14 for collecting.

The screen 12 is an endless belt-like porous member penetrating in the longitudinal direction of the water channel 1, and has a partition wall 2 projecting in the water channel 1 and the water channel 1 on the downstream side of the partition wall 2.
Is vertically arranged so as to expose the upper part to the water surface, and is supported between the partition wall 2 and the intermediate support wall 3 in a rotatable manner. The drive mechanism is rotatably driven.

More specifically, guides 20 for guiding the screen 12 are arranged on the partition wall 2 and the intermediate support wall 3, respectively, while a rotating body 22 provided with a pair of sprockets 23 rotates above the guides 20. The screen 1 with the roller chain 40, which will be described later, supported so as to be meshed with the sprocket 23.
2 is stretched over the rotating body 22 and each guide 20, and a predetermined tension is applied to the screen 12 by a tension roller 24 arranged slightly below the rotating body 22. A motor 25 as a drive source is arranged laterally of the rotary body 22, and a pulley 26 mounted on the output shaft of the motor 25 and a pulley 27 mounted on the rotary shaft of the rotary body 22 are provided. A conductive belt 28 is laid across the belt. As a result, when the motor 25 operates, the rotational driving force is transmitted to the rotating body 22 and the rotating body 22 rotates, and as a result, the screen 12 is moved to the guides 2.
While being guided by 0, it makes a circular movement (rotation).

The screen 12 will be described in more detail as shown in FIGS. 3 and 4.
Has a plurality of unit frames 30, and these unit frames 30 are connected to each other through a pair of endless roller chains 40 (hereinafter abbreviated as chains 40).

The unit frame 30, as shown in FIGS. 5 and 6, is in the width direction of the screen 12 (left and right direction in FIG. 5;
It has a box shape having side walls 31b and 31c around a long and slender rectangular bottom wall 31a (hereinafter simply referred to as the width direction), and is entirely made of synthetic resin including comb-shaped projections 34 and 35 described later. Etc. are integrally formed.

The bottom wall 31a of the unit frame 30 is a portion constituting a dust trapping surface in the screen 12, and the bottom wall 31a is regularly provided with a number of through holes 32 having a rectangular cross section. Is formed in. In this embodiment, the thickness of the bottom wall 31a is set to about 15 mm so that the through hole 32 has a certain depth.

Further, a nut member 33 is provided on the side wall on the short side, that is, the side walls 31b on both sides in the width direction of the unit frame 30, as a mounting portion for the chain 40, which will be described later, and in the illustrated example. 2 on each side wall 31b
One nut member 33 is provided in the vertical direction (the vertical direction in FIG. 5; the rotation direction of the screen 12) at predetermined intervals.
These nut members 33 are provided, for example, by molding the entire unit frame 30 (portions other than the nut member 33) and then press-fitting the nut member 33 into the side wall 31b.

Further, a plurality of thin plate-shaped projections (unit projections) are provided on the outside of the side walls on the long side, that is, the side walls 31c on the upper and lower sides of the unit frame 30 in a row at equal pitches in the width direction. Comb-shaped protrusions 34 and 35 are provided. The unit projections forming the comb-shaped projections 34, 35 have the same shape and pitch, but the comb-shaped projections 34, 35 are entirely of a predetermined size in the width direction, specifically, the pitch of the unit projections. 1 /
The two dimensions are offset from each other so that the comb-shaped projections 34 and 35 of the adjacent unit frames 30 mesh with each other, as will be described later.
The thickness (dimension in the width direction) of each unit protrusion of each comb-shaped protrusion 34, 35 is set to be smaller than the above pitch, so that each comb-shaped protrusion 34, 35 meshes in a non-contact state. Has become.

As shown in FIGS. 3 and 4, the unit frame 30 includes a pair of chains 40 (only one side is shown in FIG. 3).
Are arranged in a line in between, and are fixed to the chains 40 on both sides (both sides in the width direction) thereof. Thus, the unit frames 30 are connected endlessly to form the screen 12. The unit frame 30 and the chain 40 are fixed by inserting a screw 42 into a through hole formed in the link plate 41 of the chain 40 and screwing the screw 42 into the nut member 33 of the unit frame 30. The plate 41 and the side wall 31 of the unit frame 30
It is carried out by fastening b with a screw 42.

Here, on the screen 12,
The pitch of each pin 44 of the chain 40 is the unit frame 30.
Is set to be substantially equal to the short side dimension of. As a result,
As shown in FIG. 3, the pins 44 are arranged between the unit frames 30, and the adjacent unit frames 30 are connected to each other at their both ends so as to be rotatable relative to each other. That is, each unit frame 30 is rotatably connected with the pin 44 as a connecting shaft.

Further, the comb-shaped projections 34 of the unit frame 30 and the comb-shaped projections 35 of the unit frame 30 adjacent to the unit frame 30 mesh with each other as shown in FIGS. 3 and 7, that is, each of the comb-shaped projections 34, 35. The unit protrusions are alternately overlapped (overlapped) in the width direction, thereby sealing between the unit frames 30. In this embodiment, as shown in FIG.
Each of the comb-shaped projections 34, 35 is provided so as to be coaxially engaged with the pin 44 (on the axis of the pin 44), so that the comb-shaped projections 34, 35 having a compact and simple shape can be formed as will be described later. A seal can be achieved.

In FIGS. 3 and 4, reference numeral 43
Is a roller rotatably supported around the pin 44, and 38 is a cover plate interposed between the chain 40 and the unit frame 30.

The removing device 14 is, as shown in FIG.
The spray device 50 disposed outside the screen 12 and directly above the rotating body 22, and the spray device 5
And a trough 51 arranged inside the screen 12 so as to face 0.

The spray device 50 is, for example, a pump installed at the bottom of a water channel while pumping running water while the screen 12 is being drawn.
It is configured to inject water at high pressure toward
Thereby, the dust entangled in the screen 12 is removed by water pressure. On the other hand, the trough 51
By the action of the spray device 50, the dust that falls off the screen 12 is collected and guided to the collection box 52 arranged on the upstream side of the screen 12.

In the dust removing device 10 constructed as described above, the running water in the water channel 1 passes through the opening 2a of the partition wall 2 as shown by the white arrow in FIGS.
And is flowed down to the downstream side through the peripheral surface of the screen 12, that is, the through hole 32 of the unit frame 30. Therefore, if dust is contained in the water, the running water will be captured when passing through the peripheral surface of the screen 12. At this time, in the screen 12, since the adjacent unit frames 30 are sealed by the comb-shaped projections 34 and 35 meshing with each other as described above, dust particles flow down between the unit frames 30. Therefore, the dust can be properly captured.
Moreover, since the comb-shaped projections 34 and 35 are meshed with each other in a non-contact state, the unit frames 30 are not completely sealed, and accordingly, the running water is kept in the unit frames 30.
It will flow well through the space.

While the dust is thus captured, the screen 25 is rotationally driven by the operation of the motor 25, and the dust thus captured is pulled up from the water as the screen 12 rotates. And screen 12
When the captured dust reaches the upper end of the screen (the position of the rotating body 22) with the rotation of, the dust is removed from the screen 12 by the pressure of water sprayed from the spray device 50 and is collected in the trough 51. The Rukoto. On this occasion,
In this embodiment, as described above, the bottom wall 31a of the unit frame 30 which is a dust trapping surface is set to have a thickness of about 15 mm, and the through hole 32 which is a water flow passage has a certain depth. Therefore, for example, the fibrous dust is less likely to be entangled as compared with the case where the dust trapping surface is constituted by a metal net or the like, and therefore the dust trapped by the screen 12 can be favorably removed by the water pressure of the spray device 50.

The dust collected in the trough 51 in this way is guided to the collection box 52 through the trough 51, and when a certain amount of dust is collected in the collection box 52, the operator moves it outside the water channel. It will be carried out.

According to the dust removing device 10 as described above, each unit frame 3 constituting the screen 12 as described above.
0 is provided with comb-shaped projections 34 and 35, and these comb-shaped projections 34 and 35
Since the unit frames 30 are sealed by interlocking 35 with each other, dust can be prevented from flowing down from between the unit frames 30, but water can be satisfactorily flowed between the unit frames 30. Can be transmitted.

Therefore, there is an effect that the water permeability of the screen 12 can be improved as compared with the conventional structure in which the unit frames are sealed by the rubber connecting member. Moreover, since the comb-shaped projections 34 and 35 mesh with each other in a non-contact state as described above, the flexibility of the unit frames can be favorably secured as in the conventional case, and the space between the adjacent unit frames can be secured. Even if the gap between the unit frames fluctuates to some extent, the unit frames can be sealed well.

Further, since the comb-shaped projections 34 and 35 are integrally formed on the unit frame 30, the unit frames 30 can be sealed by simply arranging and fixing the unit frames 30 side by side when the screen is manufactured. it can. Therefore, it is possible to reduce the number of parts and the number of assembling steps as compared with the conventional structure in which the connecting member is required to be assembled at the time of manufacturing the screen, and thus the manufacturing cost of the screen 12 can be reduced. effective.

The screen 12 of the dust removing device 10
In the above, the comb-shaped projections 34 and 35 are meshed with each other to seal between the unit frames 30, but in the present embodiment, as described above, the pitch of the pins 44 of the chain 40 is short in the unit frame 30. The pins 44 are arranged between the adjacent unit frames 30 by being set substantially equal to the side dimension, and the comb-shaped projections 34 and 35 mesh with the pins 44 coaxially (on the axis of the pin 44). Therefore, there is also a structural advantage that each of the protrusions 34 and 35 can be made compact and simple.

That is, when the meshing position of the comb-shaped projections 34 and 35 is not on the axis of the pin 44, the distance between the pin 44 and the comb-shaped projections 34 and 35 is set to a radius as the unit frame 30 rotates. As a result, the comb-shaped projections 34 and 35 are largely displaced. Therefore, if the comb-shaped projections 34 and 35 are always meshed with each other, the comb-shaped projections 34 and 35 need to be upsized or have a curved shape. On the other hand, if the comb-shaped projections 34 and 35 are engaged with each other on the axis of the pin 44 that is the pivotal fulcrum of the unit frame 30 as in the above-described embodiment, the comb-shaped projections 34 and 35 are considerably large. Alternatively, the comb-shaped projections 34, 35 can be satisfactorily engaged with each other without providing a curved shape.
That is, as shown in FIG. 8, the comb-shaped projections 34 and 35 can be made compact and simple.

By the way, the dust removing device 10 described above is
1 is an embodiment of a dust remover 10 according to the present invention,
The specific configuration can be appropriately changed without departing from the scope of the present invention. For example, the following configurations can be adopted.

The unit frame 30 is not limited to the one integrally molded as described above. For example, the comb-shaped projections 34 and 35 and the bottom wall 31a, which are separately manufactured, are provided on a frame body having a “mouth” in plan view.
It may be assembled. In this case, a metal net or the like may be attached instead of the bottom wall 31a. However,
From the viewpoint of improving manufacturability of the screen 12, it is advantageous to integrally mold the entire unit frame as in the embodiment. The unit frame 30 may be made of a metal material such as aluminum instead of being entirely made of a resin material. In this case, the unit frame 30 may be manufactured by casting.

In the embodiment, the comb-shaped protrusions 34, 35 of the adjacent unit frames 30 are meshed with the pin 44 coaxially (on the axis of the pin 44).
However, the shape, size, arrangement, etc. of the projections 34, 35 are not limited as long as the comb-shaped projections 34, 35 are engaged with each other and the unit frames 30 can be well sealed. It doesn't matter. However, the comb-shaped projection 3
To make 4,35 compact and simple,
As in the above embodiment, each comb-shaped protrusion 3 is coaxial with the pin 44.
It is preferable that the members 4 and 35 are engaged with each other.

In the embodiment, the unit frames 30 are connected endlessly via the chain 40. However, for example, the unit frames 30 may be directly connected to each other via a connecting shaft. For example, leg portions extending vertically (up and down in FIG. 5) are provided at both ends of the unit frame 30 in the width direction, and the corresponding leg portions of the adjacent unit frames 30 are rotatably connected by the connecting shafts. May be.
Also in this case, if the comb-shaped projections 34 and 35 are engaged with each other on the axis of the connection shaft between both the connection shafts, the comb-shaped projections 34 and 35 are compact and simple as in the embodiment. It can be configured.

In the embodiment, the present invention is applied to the dust removing device 10 of the type in which the dust is trapped inside the screen 12 while inviting the water flow inside the screen 12, but the present invention applies the outer peripheral surface of the screen, for example. The present invention is also applicable to a dust remover of a type in which a screen is arranged in the water channel 1 in a state of being directed toward the upstream side of the water channel, and the dust particles flowing down are captured by the outer peripheral surface of the screen. The present invention is, in short,
An apparatus for picking up dust with an endless screen and pulling the dust out of a water channel or the like as the screen moves rotationally, and a dust removing device in which a screen is formed by connecting a plurality of unit frames. If applicable.

[0043]

As described above, according to the present invention, in the dust removing device configured to capture dust while rotating and driving an endless screen configured by connecting a plurality of unit frames, the screen rotating direction Since the comb-shaped projections are provided at the ends of each unit frame in Fig. 3 and the comb-shaped projections of the adjacent unit frames are meshed with each other in a non-contact state, the space between the unit frames is sealed. While preventing the flow of dust from between
The running water can be satisfactorily transmitted through each unit frame. Therefore, there is an effect that it is possible to improve the water permeability of the screen as compared with the conventional device of this type while capturing the dust satisfactorily.

In particular, in such a structure, if the comb-shaped projections are integrally formed on the unit frame, it is possible to reduce the number of constituent parts of the screen and the number of assembling steps. This has the effect of reducing costs.

[Brief description of drawings]

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

FIG. 2 is a plan sectional view showing the structure of a dust removing device.

FIG. 3 is a plan view showing a configuration of a screen.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3 showing the configuration of the screen.

FIG. 5 is a plan view showing a configuration of a unit frame.

FIG. 6 is a view as viewed in the direction of arrow C in FIG. 5, showing the structure of a unit frame.

FIG. 7 is an enlarged view (an enlarged view of a portion indicated by reference symbol B in FIG. 3) showing a meshing portion of comb-shaped projections of adjacent unit frames.

FIG. 8 is a view corresponding to FIG. 4 for explaining the positional relationship between the pin of the roller chain and the comb-like protrusion.

[Explanation of symbols]

1 waterway 10 Dust remover 12 screens 30 unit frame 34,35 comb-shaped protrusions 40 roller chain 41 link plate

Claims (3)

(57) [Claims] 1. A dust remover for picking up dust with an endless screen and lifting the dust as the screen moves rotationally, wherein the screen has a plurality of porous unit frames, and these unit frames are screens. Of the unit frames in the rotation direction are provided with comb-shaped projections formed by arranging a plurality of unit projections in the screen width direction at both front and rear ends of each unit frame in the rotation direction. A dust remover characterized in that the comb-shaped projections of the adjacent unit frames are meshed with each other in a non-contact state so as to seal between the unit frames. 2. The dust remover according to claim 1, wherein adjacent unit frames are arranged between the unit frames, and connecting shafts are provided at both end portions in the width direction of the unit frames. A dust remover characterized in that the comb-shaped projections of adjacent unit frames are rotatably connected to each other via the same and coaxially mesh with the connection shaft. 3. The dust remover according to claim 1 or 2, wherein the comb-shaped projection is formed integrally with the unit frame.