JP4444874B2 - Dust remover - Google Patents

Description

  The present invention is a dust removing device that is disposed at a water inlet of a river or the like, a pit from the main line of a confluence pipe to an overflow rainwater trunk, etc., and prevents dust or the like from entering the water intake or the pit. It is about.

  As the dust removing device described above, conventionally, a plurality of shafts each having a disk (disk) provided at intervals are arranged in a staggered manner so that the disks on adjacent shafts overlap with each other. An arrangement is known in which the shafts to be fitted are rotated in the same direction (see Patent Document 1).

This dust removing device is configured to receive dust etc. at the river side portion of the disk and move the dust etc. to the downstream side of the river by the rotation of the disc, and the river side portion of the disc is The rotation direction of the shaft is set so as to move from the upstream side to the downstream side of the river.
JP-A-6-226015

  However, in the case of the conventional dust removing device, the rotation of the disk tries to move the dust adhering to the disk to the downstream side, but the moving direction of the disk is the portion where the disks of adjacent shafts overlap each other. On the contrary, there is no scraping portion that can be forcibly moved by being caught by dust or the like, and there is a risk that dust removal cannot be performed smoothly.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a dust removing device that can perform dust removal smoothly.

The dust removing device according to the first aspect of the present invention includes a dust removing screen having an elongated water intake gap, a scraping piece provided so as to be movable along the water intake gap, and a tip of the scraping piece as one of the water intake gaps. When moving from one side to the other side, scrape so that it protrudes outside the dust removal screen, and when it moves from the other side of the water intake gap to one side, it is immersed in the water intake gap of the dust removal screen. The dust removing screen has a water intake gap in the horizontal direction, and the intake side of the intake water channel branched from the middle of the main water channel, the one side being upstream of the main water channel The other side is arranged as the downstream side of the main water channel, and the drive mechanism is connected to the first link for attaching the base end side of the scraping piece and one end side to each end side of the first link. A pair of second links swinging in parallel to each other, a third link having both ends connected to the other ends of the pair of second links, and a base end being connected to the fixed piece of the frame body, respectively. The tip side is connected in the middle of each second link, and a pair of levers that circularly move the connecting portion with the same radius and the same angular phase. One end side is connected to the other end side of one of the second links. A drive motor having a crank and a rotating shaft to which the other end of the crank is attached, circularly moving one end of the crank and circularly moving the other end of both second links with the same radius and the same angular phase. And a pseudo-linear movement from the other end side of the water intake gap toward the one end side by separating the first link from the dust removing screen by the rotational force applied from the drive motor, and removing the first link from the dust removing screen. Move closer to the screen It is configured to continuously repeat the arc-shaped movement from one end side to the other end side of the gap, and the dust removing screen is provided with two or more water intake gaps in the vertical direction, The first link has a vertical mounting portion that is substantially orthogonal to the first link, and the scraping pieces are spaced vertically in the vertical mounting portion corresponding to all or part of the two or more water intake gaps. The vertical mounting portion is provided in the first link in a plurality of rows in the horizontal direction, and the scraping pieces respectively provided in the adjacent vertical mounting portions are connected to the main water channel. The upstream dead center at the tip of the scraping piece provided at the downstream vertical mounting portion is upstream of the downstream dead center at the tip of the scraping piece provided at the upstream vertical mounting portion. It is characterized by being arranged to be on the side To do.

  In the case of the present invention, when the tip of the scraping piece protrudes outside the dust removal screen, the scraping piece moves from one side of the water intake gap to the other side. It can be forcibly moved to the other side. Further, when the scraping piece returns to the original position, the tip of the scraping piece is retracted so as to pass through the water intake gap of the dust removing screen, so that it does not interfere with dust moved to the other side.

In addition , when the tip of the scraping piece protrudes from the dust screen to the main water channel side, it moves from the upstream side to the downstream side of the main water channel. While moving downstream, it can be washed away by the main stream. Further, when the scraping piece returns to the original position, the tip of the scraping piece is retracted so as to pass through the water intake gap of the dust removing screen, so that it does not interfere with dust moved to the downstream side.

Further , when the crank rotates in response to the rotational force of the drive motor, the other ends of the pair of second links make a circular motion with the same radius and the same angular phase. At this time, the middle of the pair of second links is constrained by a lever and performs a circular motion with the same radius and the same angular phase, so that the pair of second links swings in parallel with each other. As a result, the first link to which the scraping piece is attached continuously repeats the pseudo linear movement away from the dust removing screen and the arc movement approaching the dust removing screen. Therefore, the circular movement of the crank can be converted into a continuous repeated movement of the pseudo linear movement and the circular movement in the first link, and a complicated trajectory movement can be realized with a simple drive source.

Moreover , since the dust removing screen has two or more water intake gaps in the vertical direction, it is possible to provide a dust removing screen corresponding to the depth of the water intake channel, and a plurality of scraping pieces provided in the vertical direction are reciprocated with the same movement. Can be moved. In this case, when only the movement of dust etc. is intended, the scraping piece may be arranged for a part of the water gap, and not only the movement of dust etc. but also clogging in the whole water intake gap is prevented. If this is the case, the scraping piece may be distributed to all the water gaps. Further, in this case, the first link in which the horizontal pieces are arranged in the upper one is configured such that the vertical mounting portion is provided on the horizontal pieces in a suspended state.

Furthermore , even if the dust removal screen is long in the horizontal direction, it can be handled.

Also , since the tip of the downstream scraping piece protrudes to the main water channel side of the dust removal screen to the upstream side of the dust moved to the downstream side of the main water channel by the upstream scraping piece, the dust etc. It is possible to reliably move to the downstream side of the main water channel and to reliably prevent interference with dust and the like.

  The present invention will be specifically described below.

  FIG. 1 is a plan view showing an installation location of a dust removing device according to the present embodiment, FIG. 2 is a front view showing the dust removing device, and FIG. 3 is a front view showing a state where a dust removing screen is removed from the dust removing device. 4 is a plan view of FIG. 2, and FIG. 5 is a right side view of FIG.

  As shown in FIG. 1, the dust removing device 1 of this embodiment is disposed in a water intake 4 of a water intake channel 3 branched from a main water channel 2 through which water flows from the left side to the right side in the illustrated example. More specifically, as shown in FIGS. 4 and 5, the dust removing device 1 includes a frame body 6 in which four surfaces on the upper and lower sides and both side surfaces are connected, and the frame body 6 is provided with a step provided in the water intake 4. It is attached by being fixed to the part 5. The stepped portion 5 is formed by making the width L2 of the water intake 4 wider than the width L1 of the water intake water channel 3. In addition, the water intake 4 is formed, for example with concrete.

  The dust removing device 1 has a dust removing screen 10 for removing dust by attaching dust or the like. This dust removing screen 10 is formed by spanning a horizontally long screen plate 11 on the front side of both side surfaces of the frame body 6, and each screen plate 11 is horizontally arranged in the vertical direction (vertical direction). In addition, a large number of water intake gaps 12 elongated in the horizontal direction (horizontal direction) are provided in the vertical direction. The number of the screen plates 11 and the water intake gaps 12 may be appropriately set according to the depth of the water intake channel 3. In addition, the width dimension (vertical dimension) of the intake gap 12 is set to about 4 mm in this example, for example.

  In addition, the dust removing device 1 includes a scraping piece 21 for removing dust attached to the dust removing screen 10 and a drive mechanism 20 for moving the scraping piece 21.

  In this embodiment, the scraping pieces 21 are arranged in a large number in the vertical direction corresponding to all the water intake gaps 12, and in a plurality of rows in the horizontal direction corresponding to the horizontal length of the water intake gaps 12, for example, 5 Arranged in columns.

  When the drive mechanism 20 moves the tip 21 a of the scraping piece 21 from the upstream side to the downstream side of the main water channel 2, the drive mechanism 20 projects to the main water channel 2 side from the dust removal screen 10, and the downstream side of the main water channel 2. The scraping piece 21 is configured to reciprocate so as to be immersed in the water intake gap 12 of the dust removing screen 10 when moving toward the upstream side. The thickness of the scraping piece 21 is set slightly shorter than the width dimension of the water intake gap 12.

  The configuration of the drive mechanism 20 will be described in detail below.

  The drive mechanism 20 includes a first link 22 for attaching the proximal end side 21b of the scraping piece 21, and left and right sides that are connected to both end sides 22a and 22b of the first link 22 and have one end side 23a swinging in parallel with each other. A pair of second links 23, a third link 27 having both ends connected to the other end side 23c of the pair of second links 23, and the right and left second links 23 are connected to each other, and the connecting portion 23b. A pair of left and right levers 24 that move in a circular arc with the same radius and the same angular phase, a crank 25 connected to the other end 23c of the right second link 23, and a rotational force for causing the crank 25 to perform a circular motion. And a drive motor 26 that circularly moves the other end sides 23c of the second links 23 with the same radius and the same angular phase. The first link 22, the second link 23, the third link 27, and the lever 24 are provided one above the other, and one drive motor 26 and one crank 25 are provided on the upper side. As the drive motor 26, a hydraulic motor or an electric motor is used.

  Between the two upper and lower first links 22, a plurality of rows in the horizontal direction, in the illustrated example, five rows of vertical mounting portions 31 are spanned in the vertical direction, and the vertical mounting portions 31 are spaced apart in the vertical direction. The base end side 21b of the scraping piece 21 is attached. The arrangement of the scraping pieces 21 is as described above.

  Further, first shafts 32 are provided at both ends of the upper and lower first links 22, and one end side 23 a of the second link 23 is connected to each first shaft 32.

  A connecting portion 23 b between each second link 23 and the lever 24 is provided with a second shaft 33, and the second link 23 and the tip end side of the lever 24 are connected by the second shaft 33.

  Further, a third shaft 34 is provided on the other end side 23 c of the left and right second links 23, and both ends of the third link 27 and the other end side 23 c of the second link 23 are connected by the left and right third shafts 34. In addition, the other end side 23c of the second link 23 and the tip end side of the crank 25 are connected by one (right side) third shaft 34.

  The base end side of the lever 24 is connected to a pair of fixing pieces 7 extending inward from the frame body 6, and a fourth shaft 35 is provided at the connecting portion between the base end side of the lever 24 and the fixing piece 7. A fifth shaft 36 is provided at the connecting portion between the right long fixed piece 7 and the base end side of the crank 25.

  Further, the length of each of the left and right second links 23 (distance between the first shaft 32 and the third shaft 34), the length of each of the left and right levers 24 (distance between the second shaft 33 and the fourth shaft 35), and The length of the first link 22 (distance between the left and right first shafts 32) and the length of the third link 27 (distance between the left and right third shafts 34) are the same, and the third shaft 34 is shown in FIG. The positional relationship and length of the two levers 24, that is, the tip side of the two levers 24, that is, the second shaft 33, circularly moves with the same radius and the same angular phase as shown in FIG. Set the relationship. FIG. 7 shows more details of the movement trajectory on one side of the second link 23. The numbers of the tip 21a of the scraping piece 21 in FIGS. 6 and 7 and the numbers of the third shaft 34 indicate the correspondence of timing.

  By setting in this way, when the crank 25 is rotated by the rotational force applied from the drive motor 26, the left and right second links 23 swing on the same horizontal plane in a state of being parallel to each other, and the front-rear direction and the left-right direction Will be displaced. In other words, the shape of the parallelogram formed by the first link 22, the second link 23, and the third link 27 changes so as to change the internal angle between the first link 22 and the second link 23, and the first After the link 22 moves on the horizontal movement locus, the link 22 moves in an arc shape protruding forward, and then moves on the left and right movement locus repeatedly.

  Accordingly, the scraping piece 21 reciprocates. Specifically, as shown in FIG. 6, the tip 21 a of the scraping piece 21 attached to the first link 22 is a screen when the scraping piece 21 moves from the upstream side to the downstream side of the main water channel 2. When the scraping piece 21 moves from the downstream side of the main water channel 2 toward the upstream side, it protrudes toward the main water channel 2 side from the plate 11 and moves in the arc shape (A). And move to the quasi-straight line (B), and the arc-shaped (A) movement and the quasi-linear (B) movement are continuously repeated.

  Therefore, in the case of this embodiment, the tip 21a of the scraping piece 21 moves from the upstream side to the downstream side of the main water channel 2 when protruding from the dust screen 10 to the main water channel 2 side. 10 can be washed away by the water flow of the main channel 2 while forcibly moving the dust adhering to 10 to the downstream side with the scraping piece 21. Further, when the scraping piece 21 returns to the original position, the tip 21a of the scraping piece 21 is retracted so as to pass through the water intake gap 12 of the dust removing screen 10, so that it does not interfere with dust or the like moved downstream. . Further, since the scraping piece 21 is arranged for the entire intake gap 12, not only the movement of dust and the like but also the clogging of dirt and the like in the intake gap 12 can be prevented. Further, the circular motion of the crank 25 can be converted into a continuous repetitive movement of an arc movement and a pseudo linear movement in the first link 22, and a complicated trajectory movement can be realized with a simple drive source, that is, the drive motor 26. .

  Further, as shown in FIG. 6, in the case of this embodiment, the scraping pieces 21 are provided in a plurality of rows (5 rows in the illustrated example) in the water flow direction, so that the dust removal screen 10 is long in the horizontal direction. Of course, even if it exists, it can respond. Further, the scraping pieces 21 provided in the adjacent vertical attachment portions 31 are respectively located at the downstream dead center (C of the tip 21a of the scraping piece 21 provided in the vertical attachment portion 31 located on the upstream side of the main water channel 2. ), The upstream dead center (D) of the tip 21a of the scraping piece 21 provided in the vertical mounting portion 31 located on the downstream side thereof is arranged on the upstream side. Since the tip 21a of the scraping piece 21 on the downstream side protrudes toward the main water channel 2 side of the dust removing screen 10 on the upstream side of the dust moved to the downstream side of the main water channel 2 by the scraping piece 21 on the side, And the like can be surely sequentially moved to the downstream side of the main water channel 2 and interference with dust and the like can be reliably prevented.

  In the above-described embodiment, the scraping piece 21 is attached to the vertical attachment portion 31 spanned between the upper and lower two first links 22, but the present invention is not limited to this. As shown in FIG. 8 (front view) and FIG. 9 (right side view), the first link 22 is provided only on the upper side, the vertical attachment portion 31 is provided in a suspended state, and the scraping piece 21 is moved up and down on the vertical attachment portion 31. It is good also as a structure attached at intervals in a direction.

  In the case of this configuration, there is an advantage that the drive mechanism 20 can be disposed above the water surface and dust or the like can be prevented from adhering to the drive mechanism 20. The first link 22, the second link 23, the third link 27, the lever 24, and the crank 25 may be provided only on the upper side.

  Moreover, in the structure shown in FIG.8 and FIG.9, since the drive mechanism 20 is covered with the box 40, adhesion prevention of refuse etc. can be improved more. In this configuration, since the vertical mounting portion 31 needs to be disposed below the water surface, it is necessary to form an opening 41 that allows movement of the vertical mounting portion 31 on the lower surface (bottom surface) of the box 40. In this case, dust intrusion prevention means 42 that closes the opening 41 and ensures the movement of the vertical mounting portion 31 is provided in the opening 41 portion. As shown in FIG. 10, the dust intrusion prevention means 42 has two types of large and small dust intrusion prevention members 43 and 44, and the opening 41 is closed with the larger dust intrusion prevention member 43, and the dust intrusion prevention member The long holes 43a provided so that the vertical mounting portions 31 can be inserted through the holes 43 are substantially closed by the smaller dust intrusion prevention member 44, respectively. Note that the dust intrusion prevention unit may have another configuration.

  Furthermore, in embodiment mentioned above, it is set as the structure which arrange | positions scraping pieces with respect to all the intake gaps, However, This invention is not restricted to this, The structure which arranges scraping pieces with respect to some intake gaps It is good. In that case, the scraping pieces may be arranged every two or more than two with respect to the water intake gap. Alternatively, when a plurality of vertical attachment portions for attaching the scraping pieces are provided, the attachment positions of the scraping pieces at the adjacent vertical attachment portions may be varied in the vertical direction. Even in the case of such a configuration, it is possible to reliably move the dust and the like downstream.

  Furthermore, in the above-described embodiment, the dust removing device is provided at a water intake of a river or the like. However, the dust removing device 1 of the present invention, as shown in FIG. It can also be provided in the same way as before or at the outlet F of the overflow stormwater trunk 51. In the case of providing in FIG. 11F, the dust removing screen is horizontally arranged upward, and when the tip of the scraping piece moves from one side to the other side of the water intake gap, it is outside the dust removing screen. (Upside) protruding from the other side of the water intake gap toward the other side so that it can be immersed in the water intake gap of the dust removal screen to scrape off dust adhering to the dust removal screen. Can be forcibly moved to the other side. Further, when the scraping piece returns to the original position, the tip of the scraping piece is retracted so as to pass through the water intake gap of the dust removing screen, so that it does not interfere with dust moved to the other side.

It is a top view which shows the installation location of the dust removal apparatus which concerns on one Embodiment of this invention. It is a front view which shows the dust removal apparatus of FIG. It is a front view which shows the state which removed the dust removal screen from the dust removal apparatus of FIG. FIG. 3 is a plan view of FIG. 2. FIG. 3 is a right side view of FIG. 2. It is operation | movement explanatory drawing of the drive mechanism of FIG. FIG. 7 is a detailed operation explanatory diagram of one side of a pair of second links provided in the drive mechanism of FIG. 6. It is a front view which shows the dust removal apparatus which concerns on other embodiment of this invention. It is a right view of FIG. It is explanatory drawing of the dust intrusion prevention means in the dust removal apparatus shown in FIG. 8, (a) is a front view, (b) is a bottom view. It is a figure which shows the other application location of the dust removal apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust removal apparatus 10 Dust removal screen 12 Water intake clearance 20 Drive mechanism 21 Scraping piece 21a Tip 22 1st link 23 2nd link 24 Lever 25 Crank 26 Drive motor 27 3rd link A Circular arc B Pseudo linear C Downstream dead point D Upstream dead center

Claims (1)

A dust screen (10) having an elongated water intake gap (12) ;
A scraping piece (21) movably provided along the water intake gap (12) ;
When the tip of the scraping piece (21) moves from one side of the water intake gap (12) toward the other side, the scraping piece (21) protrudes outside the dust removing screen (10 ) , and the other end of the water intake gap (12) . A drive mechanism (20) for reciprocating the scraping piece (21) so as to be immersed in the water intake gap (12 ) of the dust removal screen (10) when moving from the side to the one side ;
The dust removing screen (10) has the water intake gap (12) in the horizontal direction, and the intake side (4) of the intake water channel (3) branched from the middle of the main water channel (2), the one side being the main water channel ( 2) the upstream side, the other side is arranged as the downstream side of the main water channel (2),
The drive mechanism (20) has a first link (22) for attaching the proximal end side of the scraping piece (21) and one end side connected to both end sides of the first link (22). A pair of moving second links (23), a third link (27) having both ends connected to the other ends of the pair of second links (23), and a base end of the frame (6) A pair of levers (24) connected to the fixed piece (7), the tip end side being connected to the middle of each second link (23), and a circular movement of the connecting portion with the same radius and the same angular phase; A crank (25) having one end connected to the other end of one of the two links (23) and a rotating shaft (36) to which the other end of the crank (25) is attached. ) One end side of the second link (23) by circular movement And a drive motor (26) that circularly moves with the same radius and the same angular phase, and the rotational force applied from the drive motor (26) moves the first link (22) away from the dust removing screen (10). The quasi-linear movement of the water intake gap (12) from the other end side to the one end side, and the first link (22) is brought close to the dust removing screen (10) to move the water intake gap (12) from one end side to the other end. It is configured to continuously repeat the arc-shaped movement toward the side,
The dust removal screen (10) is provided with two or more water intake gaps (12) in the vertical direction, and the first link (22) has a vertical mounting portion (31) substantially orthogonal to the first link (22). And a configuration in which scraping pieces (21) are provided in the vertical mounting portion (31) at intervals in the vertical direction corresponding to all or part of the two or more water intake gaps (12). And
The vertical attachment portions (31) are provided in the first link (22) in a plurality of rows in the horizontal direction, and the scraping pieces (21) provided in the adjacent vertical attachment portions (31) are the main water channels. The vertical attachment part (31) located on the downstream side with respect to the downstream dead center (C) at the tip of the scraping piece (21) provided on the vertical attachment part (31) located on the upstream side of (2) A dust removing device having a structure in which the upstream dead center (D) at the tip of the scraping piece (21) provided on the upstream side is located upstream .

Images