JP4041285B2 - Filter plate and dust removal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a filter plate and a dust removing device using the filter plate.
[0002]
[Prior art]
Conventionally, as a dust removing device using this type of filter plate, a dust removing device in a water stream as disclosed in JP-A-49-95443, JP-A-51-70942 or JP-A-51-70942, or Japanese Utility Model Laid-Open No. 2 A dust removal device of -78625 is known.
In this dust removing device, a central pivot portion having a first shaft hole formed substantially at the center, a proximal arm extending from one end of the central pivot portion to the proximal side, and a distal end of the proximal arm A filter plate comprising: a base end pivoting portion formed with a second shaft hole; and a tip arm extending from the other end of the central pivoting portion to the tip end side and having a rake portion formed at the tip end, The first shaft hole of the filter plate and the second shaft hole of another filter plate are alternately overlapped, and are pivotally attached by a number of connecting shafts to form an endless band-shaped filter plate group, and the endless band-shaped filter plate Configurations that circulate through groups are known.
According to the dust removing device, the first shaft hole and the second shaft hole drilled in the filter plate are circular holes corresponding to the connecting shaft, and the distance between them is constant.
This filter plate group is circulated and driven by a transport chain provided on both sides of the filter plate group, and a connecting shaft formed coaxially with a connecting shaft for connecting the links of the transport chain pivots the filter plate at two points. Thus, the filter plate is pivoted at the corner so as to perform a predetermined operation.
However, if the conveying speed is increased, the filter plate and the conveying chain are displaced and the connecting shaft is displaced. However, the distance between the centers of the first and second shaft holes of the filter plate is paired with each link of the conveying chain. Since the distance between the centers of the provided shaft holes is the same, the connecting shaft is strongly pressed against the filter plate and the filter plate moves in the same way as the transport chain. Therefore, the filter plate depends on the circulation drive of the transport chain. As a result, the smooth movement was blocked and the conveyance speed could not be increased.
In addition, the extension of the transport chain causes the filter plate to share the function of the transport chain, so that strong tension is often applied to the filter plate and breaks it, resulting in complicated replacement work and increased costs. I was forced to.
[0003]
[Problems to be solved by the invention]
The present invention was devised in view of the above circumstances, and its main problem is that the filter plate is always driven with respect to the transport chain, and an extra load is applied to the filter plate even if the transport speed is increased. It is an object of the present invention to provide a filter plate and a dust removing device using the filter plate that can be smoothly moved.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, in the invention of the filter plate of claim 1,
A central pivot portion having a first axial hole formed substantially at the center, a proximal arm extending from one end of the central pivot portion to the proximal side, and a second axial hole formed at the distal end of the proximal arm A filter plate comprising a base end pivoting portion formed with a distal end arm extending from the other end of the central pivoting portion to the tip end side and having a rake portion formed at the tip end,
A number of connections spanned between a pair of transport chains that circulate while being connected endlessly to the dust removal device by alternately overlapping the first shaft holes of the filter plate and the second shaft holes of the other filter plates In a filter plate that can pivotally attach a shaft to form an endless belt-like filter plate group,
The central pivot part and the base pivot part are each provided with a mounting hole made of an inner circumference of the same diameter, and a metal reinforcing ring set on the outer circumference of the same diameter that fits in the mounting hole without any gap And a plastic shaft hole forming ring that is fitted in the reinforcing ring and has the same outer periphery,
The shaft hole forming ring is composed of one shaft hole forming ring in which the first shaft hole is formed and the other shaft hole forming ring in which the second shaft hole is formed.
One of the first shaft hole and the second shaft hole is formed to be longer than the size of the connecting shaft to be inserted and inserted in the chain pulling direction, and the other is a circular hole into which the connecting shaft can be inserted. It is formed.
In the invention of claim 2,
The technical means that either one of the first shaft hole or the second shaft hole has a substantially elliptical shape that is longer in the direction orthogonal to the pulling direction by the chain than the size of the connecting shaft is taken. .
[0005]
In the invention of the dust removing device of claim 3,
A central pivot portion having a first axial hole formed substantially at the center, a proximal arm extending from one end of the central pivot portion to the proximal side, and a second axial hole formed at the distal end of the proximal arm Comprising a filter plate comprising a base end pivoting portion formed with a distal end arm extending from the other end of the central pivoting portion toward the distal end and having a rake portion formed at the tip end,
The first shaft hole of the filter plate and the second shaft hole of another filter plate are alternately overlapped with each other, and a large number of loops spanned between a pair of transport chains that are connected endlessly to the dust removing device and circulate. In a dust removing device having a conveyor configuration in which an endless belt-like filter plate group is formed by pivotally connecting a connecting shaft, and the endless belt-like filter plate group is circulated by the transport chain.
The center pivot part and the base end pivot part of the filter plate are each provided with a mounting hole having an inner circumference of the same diameter and a metal set with an outer periphery of the same diameter that fits in the mounting hole without a gap. And a plastic shaft hole forming ring that is fitted into the reinforcing ring and has the same outer periphery.
The shaft hole forming ring is composed of one shaft hole forming ring in which the first shaft hole is formed and the other shaft hole forming ring in which the second shaft hole is formed.
One of the first shaft hole and the second shaft hole is formed to be longer than the size of the connecting shaft to be inserted and inserted in the chain pulling direction, and the other is a circular hole into which the connecting shaft can be inserted. It can be formed to cope with the extension of the conveying chain.
In the invention of claim 4,
One of the first shaft hole and the second shaft hole has a substantially elliptical shape that is longer in the direction perpendicular to the pulling direction by the chain than the size of the connecting shaft.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a filter plate of the present invention and a dust removing device using the same will be described with reference to the drawings.
The filter plate 1 is made of a hard plastic material as in the reference examples shown in FIGS. 1 and 2, but may be formed of a steel plate or the like according to the application, and the first shaft is substantially in the center of the plate. It has a central pivot portion 10 in which a hole H1 is formed.
[0007]
A proximal arm 2 extends from one end of the central pivot 10 to the proximal side, and a proximal pivot 20 having a second shaft hole H2 is formed at the end of the proximal arm 2. Has been.
On the other hand, a tip arm 3 extends from the other end of the central pivot portion 10 to the tip side, and a rake portion 4 is formed at the end of the tip arm 3.
[0008]
In addition, on both surfaces of the central pivoting portion 10, projecting portions 5 that protrude from the central pivoting portion 10 to both sides in the thickness direction are formed.
Both sides of the projection 5 are formed of curved wall surfaces along the edge of the rake portion 4 of the front filter plate 1 that are shifted in the front-rear direction on the base end side, and are attached to the back surface of the rake portion 4. A curved scraping wall 6 is formed to scrape off the dust and the like, and a receiving wall having an arcuate cross section for receiving and positioning the outer wall portion of the proximal pivot portion 20 of the rear filter plate 1 on the distal end side. Part 7 is formed.
[0009]
Next, the base end arm 2 protrudes from one end of the central pivot portion 10, and a columnar base end pivot portion 20 is integrally attached to the end portion.
The base end pivoting portion 20 has a second shaft hole H2 formed at the center thereof.
In the illustrated example, the central pivot portion 10 and the proximal pivot portion 20 are set to have substantially the same shape with the same diameter and the same lateral width.
[0010]
In the case of the present embodiment, the first shaft hole H1 is a circular hole, and is set to have an inner diameter that allows a connecting shaft 40 provided in a later-described transport chain 30 to be rotatably inserted.
On the other hand, as shown in FIGS. 9A and 9B, the second shaft hole H2 is larger than the first shaft hole H1, longer in the chain pulling direction than the connecting shaft 40 to be inserted, and orthogonal to the pulling direction. It is formed in a substantially elliptical shape that is long in the direction to be.
The distance between the first shaft hole H1 and the second shaft hole H2 of the filter plate 1 is the connecting shaft 40 that connects the link chains 31 constituting the transport chain 30 described later, in other words, the adjacent one provided in the link chain 31. It is set so as to match the interval between the shaft hole A and the shaft hole B.
[0011]
Therefore, in the arrangement structure shown in FIG. 9A, the first shaft hole H1 is set at the same center line position as the shaft hole A, and the second shaft hole H2 is aligned with the shaft hole B and its base end position. Is set to
As a result, a space is generated in the connecting shaft 40 in the front-rear direction and the up-down direction in the second shaft hole H2. Therefore, even if the transport chain 30 extends and the interval between the adjacent connecting shafts 40 increases, the range of the space. Can respond.
In the arrangement structure shown in FIG. 9B, the centers of the first shaft hole H1 and the second shaft hole H2 are set so as to be on the same line as the center lines of the shaft hole A and the shaft hole B, respectively.
According to this, it is possible to cope with the case of high speed driving at the time of reverse rotation and the case where the conveying chain expands and contracts.
Further, in the above embodiment, the shaft hole has an elliptical shape in order to make the upper, lower, left, and right longer as the shape of the long hole corresponding to the displacement of the connecting shaft during high speed conveyance, but there is a margin only in the pulling direction of the conveyance chain 30. The elliptical shape shown in FIG. 10 may be used.
[0012]
In the reference example of FIG. 1, the central pivot portion 10 and the proximal pivot portion 20 have mounting holes 11 and 21, and metal reinforcing rings 12 and 22 (in the description) in the mounting holes 11 and 21. For convenience, plastic shaft hole forming rings 13 and 23 that are fitted and fixed to the reinforcing rings 12 and 22 to form the first shaft hole H1 and the second shaft hole H2 are provided. It is configured to be fitted and fixed.
[0013]
In this embodiment, the filter plate 1 is configured such that the thickness of the central pivot portion 10 and the thickness of the proximal pivot portion 20 are such that a desired interval can be taken between the filter plates 1 and 1 to be overlapped, Further, the central pivot portion 10 of the filter plate 1 and the proximal pivot portion 20 of the other filter plate 1 are superposed so that they are in direct contact with each other.
The side walls of the reinforcing rings 12 and 22 are formed in a horizontal plane, and are provided to eliminate friction between the filter plate 1 and plastic 1 made of plastic, and wear due to invading materials such as sand.
[0014]
The filter plate 1 shown in FIGS. 3 and 4 showing Embodiment 1 of the present invention is provided with mounting holes 11 and 21 having the same inner diameter in the central pivot portion 10 and the proximal pivot portion 20 having the same outer diameter. The metal reinforcing rings 12 and 22 set to have the same diameter and fitted in the mounting holes 11 and 21 without any gap are inserted, and the outer circumferences are set to be the same in the reinforcing rings 12 and 22 and the circular first One plastic bearing ring 13 formed with a single shaft hole H1 and the other plastic bearing ring 23 formed with an elliptical second shaft hole H2 are fitted and fixed to each other.
In the above-described configuration, the reinforcing rings 12 and 22 have the same shape, and a pivoting portion having an elliptical shaft hole and a pivoting portion having a circular shaft hole can be easily obtained by simply changing the fitting of the bearing rings 13 and 23. Can be formed.
[0015]
Here, since the bearing rings 13 and 23 are made of plastic, they are easy to mold and have sliding properties, so that they are excellent in bearings. Moreover, since the outside is reinforced by the reinforcing ring, the strength can be increased. Furthermore, when connecting different filter plates 1, when the base end pivot part 20 of another filter plate 1 directly collides with both sides of the central pivot part 10, the respective metal reinforcing rings collide with each other. It can reduce the friction of the pivot joint made of plastic, and can prevent wear due to the intrusion of sand.
[0016]
The filter plate 1 of the second embodiment shown in FIG. 5 has a configuration in which the shapes of the first shaft hole H1 and the second shaft hole H2 are formed opposite to those of the above-described embodiment.
In this case, the second shaft hole H2 is a circular hole and is set to have an inner diameter that allows the connecting shaft 40 of the transport chain 30 to be rotatably inserted. The first shaft hole H1 is larger than the second shaft hole. It is formed in a substantially elliptical shape that is longer in the chain pulling direction than the connecting shaft 40 to be inserted and long in the direction orthogonal to the pulling direction.
As a result, a space is formed in the connecting shaft 40 in the front and rear direction and the vertical direction in the first shaft hole H1, so that even if the transport speed of the transport chain is increased or the transport chain is extended, the distance between the connecting shafts is increased. Even if it becomes longer, it is possible to cope with the range of the space (see FIG. 9, where H2 is replaced with H1 and H1 is replaced with H2).
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.
[0017]
As shown in FIGS. 6 to 8, the filter plate 1 assembles a plurality of filter plates 1 to form an endless band-like filter plate group 1 ′.
That is, the second shaft hole H2 of the base end pivotally mounted portion 20 of the pair of other filter plates 1 is aligned with the first shaft hole H1 of the central pivoted portion 10 of one filter plate 1 on the left and right sides thereof, and the filter A plate is formed by shifting the plate 1 back and forth alternately to form a filter and connecting shafts to the first axial hole H1 of the central pivot part 10 and the second axial hole H2 of the proximal pivot part 20 which are superposed. 40 is pivotally connected.
The connecting shaft 40 is used to pivotally attach the link chains 31 of the pair of transport chains 30 connected to both sides of the filter plate group 1 ′. The connecting shaft 40 that connects the link chains 31 facing each other at the same time is used as it is.
[0018]
The dust removing device 50 using the filter plate group 1 ′ forms a desired corner with a pair of endless transport chains 30 arranged on the left and right sides of the frame body by a drive sprocket 51 and driven guide rollers 52 and 53, respectively. However, it has a known configuration for circulating drive, and a drive shaft 54 that rotates a pair of drive sprockets 51 provided near both ends is pivotally supported on the upper portion of the inclined surface formed on the frame.
The drive shaft 54 is rotated by an electric motor 56 through a transmission device using a chain, and similarly the brush shaft 57 of the rotary brush 58 is also rotated through the transmission device.
[0019]
The endless belt-like filter plate group 1 ′ is configured so that the transport chain 30 attached to both sides of the filter plate group 1 ′ is passed over the drive sprocket 51 and the guide rollers 52 and 53 on the driven side, and the forward path from the bottom to the top and the top to the bottom. It is designed to circulate on the return path.
As a result, underwater dust or the like caught on the rake portion 4 of the filter plate 1 is transported toward the upper portion of the dust removing device 50, and is discharged at the portion where the filter plate group 1 'is reversed beyond the drive sprocket 51. Collected in hoppers.
In addition, dust or the like stuck to the filter plate 1 without dropping is scraped off by the rotating brush 58 on the return path.
[0020]
In the present invention, the use and configuration of the dust removing device are not limited to the above-described embodiment, but in essence, the endless filter plate group is circulated by the connecting shaft of the transport chain or the connecting shaft provided coaxially with the connecting shaft. Any configuration can be used.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.
[0021]
【The invention's effect】
In the present invention, either the first shaft hole or the second shaft hole is formed as a long hole so that the filter plate always follows the transport chain. It can move smoothly without extra load.
In addition, even if the transport chain extends and the interval between the connecting shafts becomes long, it can be absorbed by the elongated holes of the first shaft hole or the second shaft hole, so there is no possibility that an excessive load is applied to the filter plate. Breakage can be prevented.
Thereby, according to this invention, while being able to perform high-speed conveyance, a reliable and stable filter plate and a dust removal apparatus using the same can be provided with a simple configuration, which is extremely beneficial. .
[Brief description of the drawings]
FIG. 1 is a side view of a filter plate of a reference example.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of the filter plate of the first embodiment.
FIG. 4 is a side view showing an assembled state of the pivot portion of the filter plate of the first embodiment.
FIG. 5 is a side view of a filter plate according to a second embodiment.
FIG. 6 is a side view showing an assembled state of the filter plate.
FIG. 7 is a plan view of the same.
FIG. 8 is a side view showing a relationship between a transport chain and a filter plate.
FIG. 9A is a view showing an example of arrangement of shaft holes on the long hole side, and FIG. 9B is a view of a different embodiment.
FIG. 10 is an explanatory diagram showing a relationship between another elliptical shape of a shaft hole and a connecting shaft.
FIG. 11 is a front view of the dust removing device.
FIG. 12 is a side view of the dust removing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter plate 2 Base end arm 3 Front end arm 4 Rake part 5 Protrusion part 6 Scraping wall part 7 Receiving wall part 10 Center pivot part 11 Mounting hole 12 Reinforcement ring 13 Bearing formation ring 20 Base end pivot part 21 Mounting hole 22 Reinforcing ring 23 Bearing forming ring 30 Conveying chain 31 Link chain 40 Connecting shaft 50 Dust removing device H1 First shaft hole H2 Second shaft hole

Claims (4)

A central pivot portion having a first axial hole formed substantially at the center, a proximal arm extending from one end of the central pivot portion to the proximal side, and a second axial hole formed at the distal end of the proximal arm A filter plate comprising a base end pivoting portion formed with a distal end arm extending from the other end of the central pivoting portion to the tip end side and having a rake portion formed at the tip end,
A number of connections spanned between a pair of transport chains that circulate while being connected endlessly to the dust removal device by alternately overlapping the first shaft holes of the filter plate and the second shaft holes of the other filter plates In a filter plate that can pivotally attach a shaft to form an endless belt-like filter plate group,
The central pivot part and the base pivot part are each provided with a mounting hole made of an inner circumference of the same diameter, and a metal reinforcing ring set on the outer circumference of the same diameter that fits in the mounting hole without any gap And a plastic shaft hole forming ring that is fitted in the reinforcing ring and has the same outer periphery,
The shaft hole forming ring is composed of one shaft hole forming ring in which the first shaft hole is formed and the other shaft hole forming ring in which the second shaft hole is formed.
One of the first shaft hole and the second shaft hole is formed to be longer than the size of the connecting shaft to be inserted and inserted in the chain pulling direction, and the other is a circular hole into which the connecting shaft can be inserted. A filter plate characterized by being formed.   2. The shaft hole according to claim 1, wherein one of the first shaft hole and the second shaft hole has a substantially elliptical shape that is longer in a direction orthogonal to a pulling direction of the chain than a size of the connecting shaft. The filter plate as described. A central pivot portion having a first axial hole formed substantially at the center, a proximal arm extending from one end of the central pivot portion to the proximal side, and a second axial hole formed at the distal end of the proximal arm Comprising a filter plate comprising a base end pivoting portion formed with a distal end arm extending from the other end of the central pivoting portion toward the distal end and having a rake portion formed at the tip end,
The first shaft hole of the filter plate and the second shaft hole of another filter plate are alternately overlapped with each other, and a large number of loops spanned between a pair of transport chains that are connected endlessly to the dust removing device and circulate. In a dust removing device having a conveyor configuration in which an endless belt-like filter plate group is formed by pivotally connecting a connecting shaft, and the endless belt-like filter plate group is circulated by the transport chain.
The center pivot part and the base end pivot part of the filter plate are each provided with a mounting hole having an inner circumference of the same diameter and a metal set with an outer periphery of the same diameter that fits in the mounting hole without a gap. And a plastic shaft hole forming ring that is fitted into the reinforcing ring and has the same outer periphery.
The shaft hole forming ring is composed of one shaft hole forming ring in which the first shaft hole is formed and the other shaft hole forming ring in which the second shaft hole is formed.
One of the first shaft hole and the second shaft hole is formed to be longer than the size of the connecting shaft to be inserted and inserted in the chain pulling direction, and the other is a circular hole into which the connecting shaft can be inserted. A dust removing device characterized in that it can be formed to cope with the extension of the transport chain.   The shaft hole of any one of the first shaft hole or the second shaft hole has a substantially elliptical shape that is longer in the direction perpendicular to the pulling direction by the chain than the size of the connecting shaft. The dust removal apparatus as described.

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