JP2002235316A - Filter plate and refuse removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter plate capable of coping with the expansion and contraction of a conveyor chain even when the conveyor chain is expanded and contracted within a fixed range and capable of using the chain for a prolonged term and a refuse removing device using the filter plate. SOLUTION: In the filter plates, in which the first shaft hole of the filter plate and the second shaft hole of another filter plate are superposed alternately, to which a large number of connecting shafts stretched between a pair of the conveyor chains connected to the refuse removing device in an endless manner and circulated are attached pivotally and which can form endless beltlike filter plate groups, either one shaft hole of the first shaft hole or the second shaft hole is formed in size longer in at least the chain traction direction than the size of the connecting shaft inserted into the shaft hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a filter plate and a dust removing apparatus using the same.

[0002]

2. Description of the Related Art Conventionally, a dust removing apparatus using a filter plate of this type has been disclosed in Japanese Patent Application Laid-Open No. 49-95443.
JP-A-51-70942 or JP-A-51-7094
No.2 garbage removal device in the water flow, or 2-78
No. 625 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 formed at the distal end of the proximal arm. A filter plate comprising a base pivot portion formed with a second shaft hole and a distal end arm extending from the other end of the central pivot portion to the distal end side and having a rake portion at the distal end; The first shaft hole of the filter plate and the second shaft hole of the other filter plate are alternately overlapped and pivotally connected with a number of connecting shafts to form an endless band-shaped filter plate group. A configuration for circulating a group is known. According to this dust removal device, the first shaft hole and the second shaft hole formed in the filter plate are circular holes corresponding to the connection shaft, and the interval between them is constant.
The filter plate group is circulated by a transport chain provided on both sides of the filter plate group, and a connecting shaft formed coaxially with a connecting shaft connecting the links of the transport chain pivotally connects the filter plate at two points. The filter plate is formed so that the filter plate can pivot and perform a predetermined operation at the corner. However, when the transport speed is increased, the filter plate and the transport chain are displaced and the connecting shaft is displaced.
Since the distance between the centers of the shaft holes is the same as the distance between the centers of the pair of shaft holes provided on each link of the transport chain, the connecting shaft is strongly pressed against the filter plate and the filter plate is the same as the transport chain. Because of the movement, the smooth movement of the filter plate subordinate to the circulation drive of the transport chain is blocked, and the transport speed cannot be increased. In addition, when the transport chain is extended, the filter plate shares the function of the transport chain, and the strong tension is often applied to the filter plate and the filter plate is often damaged, resulting in complicated replacement work of the filter plate and cost increase. I was forced.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a main problem thereof is to make the filter plate always follow the transport chain to increase the transport speed. It is another object of the present invention to provide a filter plate capable of performing a smooth movement without applying an unnecessary load to the filter plate, and a dust removing device using the filter plate.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a central pivot portion having a first shaft hole formed substantially at the center, and a central end portion extending from one end of the central pivot portion. A proximal arm extending to the side and a second end formed at the distal end of the proximal arm.
A filter plate comprising: a base pivot portion having a shaft hole formed therein; and a distal arm extending from the other end of the central pivot portion to the distal end and having a rake portion formed at the distal end, wherein a A single shaft hole and a second shaft hole of another filter plate are alternately overlapped, and a number of connecting shafts spanned between a pair of transport chains connected endlessly to the dust removing device and circulating are pivotally mounted. In the filter plate capable of forming the endless belt-shaped filter plate group, either one of the first shaft hole and the second shaft hole is longer than at least the size of the connection shaft inserted therein in the chain pulling direction. It is taking the technical means of forming. Further, in the invention according to claim 2, the first shaft hole or the second shaft hole is provided.
Technical measures are taken such that one of the shaft holes has a substantially elliptical shape that is longer in the direction perpendicular to the direction of pulling by the chain than the size of the connecting shaft. According to the third aspect of the present invention, a mounting hole having the same diameter is provided in the central pivoting portion or the proximal pivoting portion, and a metal reinforcing ring set to the same diameter and fitted into the mounting hole without any gap is inserted. A technical means is adopted in which a plastic shaft hole forming ring having the same outer circumference and the first shaft hole or the second shaft hole is fitted into the reinforcing ring.

According to a fourth aspect of the present invention, there is provided a dust removing apparatus having 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 a proximal end, A proximal pivot portion formed at the distal end of the proximal arm to form a second shaft hole;
A filter plate comprising a tip arm extending from the other end of the center pivot portion to the tip end and having a rake portion at the tip, and a first shaft hole of the filter plate and a second shaft of another filter plate. Along with alternately overlapping the holes, a large number of connecting shafts spanned between a pair of transport chains connected endlessly to the dust removal device and circulating are pivotally connected to form an endless band-shaped filter plate group, In the dust removing device having a conveyor configuration in which the endless band-shaped filter plate group is circulated by the transport chain, the filter plate may be provided with one of the first shaft hole and the second shaft hole. Technical means that it can be formed to be at least longer in the chain pulling direction than the size of the connecting shaft to be inserted into the transfer chain, and can cope with the extension of the transport chain. In the invention of claim 5, one of the first shaft hole and the second shaft hole has a substantially elliptical shape longer than the size of the connecting shaft in the direction orthogonal to the direction of pulling by the chain. , Taking the technical measures of. In the invention of claim 6, a mounting hole of the same diameter is provided in the central pivot portion or the proximal pivot portion, and a metal reinforcing ring set to the same diameter and fitted into the mounting hole without a gap is inserted. A technical means is adopted in which a plastic shaft hole forming ring having the first shaft hole or the second shaft hole formed therein is fitted into the reinforcing ring with the same outer periphery.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a filter plate and a dust removing apparatus using the filter plate according to the present invention will be described below with reference to the drawings. This filter plate 1
Is made of a hard plastic material, but may be formed of a steel plate or the like depending on the application, and has a central pivot portion 10 having a first shaft hole H1 formed substantially at the center of the plate.

A proximal arm 2 extends from one end of the central pivot portion 10 to the proximal side, and a proximal pivot portion having a second shaft hole H2 at the end of the proximal arm 2. 20 are formed. On the other hand, a distal arm 3 extends from the other end of the central pivot portion 10 to the distal end side, and a rake portion 4 is formed at an end of the distal arm 3.

On both surfaces of the central pivoting portion 10, projections 5 projecting from both sides in the thickness direction around the central pivoting portion 10 are formed. On both sides of the projection 5, on the proximal end,
It consists of a curved wall surface along the edge of the rake part 4 of the front filter plate 1 that is shifted back and forth,
A curved scraping wall 6 is formed on the back surface of the rake section 4 for scraping off dust and the like adhering to the back of the rake section 4. An arc-shaped receiving wall portion 7 for positioning is formed.

Next, the proximal arm 2 is connected to the central pivot 10
, And a columnar base end pivot 20 is integrally attached to the end. The base end pivot 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 width.

In the case of this embodiment, the first shaft hole H1 is formed as a circular hole, and is set to have an inner diameter capable of rotatably fitting a connecting shaft 40 provided in the transport chain 30 described later.
On the other hand, the second shaft hole H2 is larger than the first shaft hole H1 as shown in FIGS.
It is formed in a substantially elliptical shape that is longer in the chain pulling direction and longer in the direction perpendicular to the pulling direction. The distance between the first shaft hole H1 and the second shaft hole H2 of the filter plate 1 is the connecting shaft 40 connecting the link chains 31 constituting the transport chain 30 described later, in other words, the adjacent shaft provided in the link chain 31. It is set so as to match the interval between the shaft holes A and B.

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,
The shaft hole H2 is set to match the shaft hole B with its base end position. As a result, the connecting shaft 4 in the second shaft hole H2 is formed.
Since 0 has a space in the front-rear direction and the up-down direction, even if the transport chain 30 extends and the interval between the adjacent connecting shafts 40 becomes longer, the space can be handled within the above-mentioned space. In the arrangement shown in FIG. 9B, the center of the first shaft hole H1 and the center of the second shaft hole H2 are set to be provided on the same line as the center lines of the shaft holes A and B, respectively. According to this, it is possible to cope with a case of high-speed driving at the time of reverse rotation or a case of expansion and contraction of the transport chain. Further, in the above-described embodiment, the shaft hole is made elliptical in order to form the elongated hole corresponding to the displacement of the connecting shaft at the time of high-speed conveyance, so that the upper, lower, left and right are formed. The shape may be an ellipse as shown in FIG.

Next, in this embodiment, the central pivot portion 10 and the proximal pivot portion 20 have mounting holes 11 and 21, and a metal reinforcing ring 12 is provided in the mounting holes 11 and 21. A plastic shaft hole forming ring 22 is fitted and fixed (hatched in the figure for convenience of explanation) and forms a first shaft hole H1 and a second shaft hole H2 in the reinforcing rings 12 and 22. 1
3, 23 are fitted and fixed.

In the present 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 spacing is provided between the filter plates 1 and 1 to be overlapped. The central pivot 10 of the filter plate 1 and the proximal pivot 20 of the other filter plate 1 are overlapped 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 plates 1 and 1 made of plastic and abrasion due to intrusion such as sand.

The filter plate 1 shown in FIGS. 3 and 4
In another embodiment, the central pivot 10 having the same outer diameter is used.
The base pivot portion 20 is provided with mounting holes 11 and 21 having the same inner diameter, and metal reinforcing rings 12 and 22 set to the same diameter and fitted into the mounting holes 11 and 21 without gaps are inserted. A plastic bearing ring 13 having a circular first shaft hole H1 and a plastic bearing ring having an elliptical second shaft hole H2 is formed in the reinforcing rings 12 and 22. 23 is fitted and fixed to each. In the above configuration, the reinforcing rings 12 and 22 have the same shape, and can be easily changed by simply changing the fitting of the bearing rings 13 and 23 to the pivoting portion having the elliptical shaft hole and the pivoting portion having the circular shaft hole. Can be formed.

Since the bearing rings 13 and 23 are made of plastic, they are easy to mold and have lubricity, so that they are excellent in bearings. Further, the outside is reinforced by the reinforcing ring, so that the strength can be increased. Furthermore, when connecting the different filter plates 1, when the proximal pivot portion 20 of another filter plate 1 directly abuts on both sides of the central pivot portion 10, the respective metal reinforcing rings abut. The friction of the pivot portion made of plastic can be reduced, and wear due to intrusion of sand or the like can be prevented.

The filter plate 1 shown in FIG.
This shows another embodiment in which the shapes of the shaft hole H1 and the second shaft hole H2 are formed in reverse to the above-described embodiment, and the connecting shaft 40 of the transport chain 30 is formed by forming the second shaft hole H2 as a circular hole. The first shaft hole H1 is larger than the second shaft hole, is longer in the chain pulling direction than the connecting shaft 40 to be inserted, and is perpendicular to the pulling direction. And is formed in a substantially elliptical shape which is long. Accordingly, in the first shaft hole H1, a space is formed in the connecting shaft 40 in the front-rear direction and the up-down direction, so that even if the transfer speed of the transfer chain increases, or the transfer chain extends, the interval between the connection shafts is reduced. Even if it becomes longer, it can be dealt with in the range of the above space (see FIG. 9, but H2 is replaced with H1 and H1 is replaced with H2 in the figure). The other configuration is the same as that of the above embodiment, and the description is omitted.

As shown in FIGS. 6 to 8, a plurality of filter plates 1 are assembled to form an endless band-shaped filter plate group 1 '.
That is, the first shaft hole H1 of the central pivot portion 10 of one filter plate 1 is aligned with the second shaft hole H2 of the proximal pivot portion 20 of the other pair of filter plates 1 on both the left and right sides. A large number of plates 1 are shifted back and forth and alternately stacked to form a filter, and a connecting shaft is connected to the first shaft hole H1 of the central pivot portion 10 and the second shaft hole H2 of the proximal pivot portion 20. Through 40, it is pivotally connected. This connecting shaft 40 is connected to each link chain 3 of a pair of transport chains 30 connected to both sides of the filter plate group 1 ′.
1 for pivotally connecting the link chains 1, and the link chains 3 which are integrally laid between the transport chains 30, 30 and face each other on both sides.
The connecting shaft 40 for simultaneously connecting the first and the second is used as it is.

The dust removing apparatus 50 using the filter plate group 1 'is configured to drive a pair of endless transport chains 30 disposed on both left and right sides of the frame body by driving sprockets 5 respectively.
1 and a guide roller 52, 53 on the driven side to form a desired corner for circulating drive. A pair of drive sprockets 51 are provided on the upper surface of the inclined surface formed on the frame near both ends thereof. A driving shaft 54 to be rotated is supported. The drive shaft 54 is rotated by an electric motor 56 via a chain transmission, and also rotates the brush shaft 57 of the rotary brush 58 via the transmission.

The endless belt-shaped filter plate group 1 ′ has a transport chain 30 attached to both sides thereof and the drive sprocket 51 and the guide roller 5 on the driven side.
It is possible to circulate on a forward path from the bottom to the top and a return path from the top to the bottom. The underwater dust and the like caught on the rake portion 4 of the filter plate 1 is conveyed toward the upper part of the dust removing device 50 and discharged over the drive sprocket 51 where the filter plate group 1 'is inverted. Collected in hoppers. In addition, dust and the like adhered to the filter plate 1 without falling are scraped off by the rotating brush 58 on the return path.

In the present invention, the use and configuration of the dust removing apparatus are not limited to the above-described embodiment. In short, the endless filter plate group is connected by a connecting shaft of the transport chain or a connecting shaft provided coaxially with the connecting shaft. Any configuration may be used as long as it is configured to circulate. Further, the filter plate may be replaced with a known configuration or add a known configuration, except for the configuration of the first shaft hole and the second shaft hole. Further, in the above embodiment, an example is shown in which the reinforcing ring is fitted to the central pivot portion or the proximal pivot portion. However, the filter plate may be integrally formed of plastic, metal, or the like. Others
In short, it goes without saying that various design changes can be made without departing from the scope of the present invention.

[0021]

According to the present invention, either the first shaft hole or the second shaft hole is formed as an elongated hole so that the filter plate always follows the transfer chain, so that the transfer speed can be increased. Even though, no extra load is applied to the filter plate, the filter plate can move smoothly. Further, even if the distance between the connecting shafts becomes longer due to the extension of the transport chain, the length can be absorbed by the elongated holes of the first shaft hole or the second shaft hole. Damage can be prevented. This allows
ADVANTAGE OF THE INVENTION According to this invention, while being able to perform high-speed conveyance, a highly reliable and stable filter plate and a dust removing and removing apparatus using the same can be provided with a simple structure, which is extremely useful.

[Brief description of the drawings]

FIG. 1 is a side view of a filter plate according to a first embodiment.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a filter plate according to a second embodiment.

FIG. 4 is a side view showing an assembled state of a pivot portion of a filter plate according to a second embodiment.

FIG. 5 is a side view of a filter plate according to a third 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 diagram showing an example of the arrangement of shaft holes on the long hole side;
(B) is a figure of the different Example.

FIG. 10 is an explanatory diagram showing a relationship between another elliptical shape of a shaft hole and a connection 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]

 REFERENCE SIGNS LIST 1 filter plate 2 proximal arm 3 distal arm 4 rake 5 protrusion 6 scraping wall 7 receiving wall 10 central pivot 11 mounting hole 12 reinforcing ring 13 bearing forming ring 20 proximal pivot 21 mounting hole 22 Reinforcing ring 23 Bearing forming ring 30 Transport chain 31 Link chain 40 Connecting shaft 50 Dust removal device H1 First shaft hole H2 Second shaft hole

Claims (6)

[Claims] 1. 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 end, and a distal end of the proximal arm. A filter plate comprising: a base pivot portion having a second shaft hole formed therein; and a distal arm extending distally from the other end of the central pivot portion and having a rake portion formed at a distal end, wherein the filter plate comprises: The first shaft hole of the plate and the second shaft hole of the other filter plate are alternately overlapped, and a number of connecting shafts bridged between a pair of transport chains that are endlessly connected to the dust removing device and circulate. In a filter plate that can be pivotally attached to form an endless band-shaped filter plate group, one of the first shaft hole and the second shaft hole is formed by:
A filter plate formed so as to be at least longer in a chain pulling direction than a size of a connecting shaft to be inserted therein. 2. The method according to claim 1, wherein one of the first shaft hole and the second shaft hole has a substantially elliptical shape that is longer than a connecting shaft in a direction perpendicular to a direction in which the chain is pulled by the chain. The filter plate according to claim 1, wherein 3. A mounting hole having the same diameter is provided in the central pivot portion or the proximal pivot portion, and a metal reinforcing ring having the same diameter and fitted into the mounting hole without any gap is inserted, and the reinforcement is performed. The filter according to claim 1 or 2, wherein a plastic shaft hole forming ring having the same outer circumference and the first shaft hole or the second shaft hole is fitted into the ring. plate. 4. 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 end, and a distal end of the proximal arm. A filter plate comprising: a base pivot portion having a second shaft hole formed therein; and a distal arm extending distally from the other end of the central pivot portion and having a rake portion formed at the distal end, wherein the filter comprises: The first shaft hole of the plate and the second shaft hole of the other filter plate are alternately overlapped with each other, and a number of connecting shafts bridged between a pair of transport chains circulating and connected endlessly to the dust removing device. To form a group of endless strip-shaped filter plates, and the endless strip-shaped filter plate group is circulated by the transport chain, wherein the filter plate has the first shaft hole. Or the first Either of the axial hole of the shaft hole, there are formed long in at least the chain pull direction than the size of the connecting shaft to be fitted,
A dust removal device capable of coping with the extension of the transport chain. 5. The method according to claim 1, wherein one of the first shaft hole and the second shaft hole has a substantially elliptical shape longer than a connecting shaft in a direction perpendicular to a direction in which the chain is pulled. The dust removal device according to claim 3. 6. A mounting hole of the same diameter is provided in the central pivoting portion or the proximal pivoting portion, and a metal reinforcing ring set to the same diameter and fitted into the mounting hole without any gap is inserted, and the reinforcement is performed. The garbage according to claim 4 or 5, wherein a plastic shaft hole forming ring having the same outer circumference and a first shaft hole or a second shaft hole is fitted in the ring. Removal device.