JP7036981B1 - Dust removal structure for waterways - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily capture and discharge dust flowing in a water channel by utilizing a rotational force rotated by a water flow in the water channel. SOLUTION: A bar having an arc portion 11 protruding diagonally upward in the upstream of a water channel 100, a plurality of slits S for receiving dust are formed in a comb shape, and a lower end portion 12a on the upstream side is fixed to the lower side of the water channel. The screen 10 and the cylindrical shape provided on the downstream side of the bar screen 10 form a plurality of claw portions 22 that protrude from the circumferential surface and enter the slit S on which dust is placed, and the drum 20 and the drum that are rotated by the water flow. A dust receiver 30 provided on the downstream side of the 20 and extending in the width direction and receiving dust released from the bar screen 10 and flowing in the width direction is provided. From directly above to just beside the upstream side, it protrudes outward from the slit S, but at the position rotated from directly above the rotating shaft 21 of the drum 20 to the downstream side, it does not protrude outward from the slit S. [Selection diagram] Fig. 1

Description

The present invention relates to a dust removing structure for a water channel. More specifically, the present invention relates to a dust removing structure for a water channel, which uses a rotational force rotated by the water flow of the water channel to scoop up and discharge dust flowing through the water channel.

For example, a water channel used for hydroelectric power generation is provided with a dust removing device for removing dust flowing through the water channel.
In the conventional dust remover, a water wheel is provided on the downstream side of the water channel, and a scraping conveyor having a rake is provided on the downstream side of the water wheel. A claw portion of a rotating scraping conveyor that captures dust flowing in a water channel is disclosed (see, for example, Patent Document 1).

In addition, a pumping conveyor and a screen having a water wheel and a claw part are provided in the water channel, the water wheel is rotated by the water flow of the water channel, the pumping conveyor is rotated by the rotational force, and the claw part of the rotating scraping conveyor is used as a screen. Those that capture the attached dust are also disclosed (see, for example, Patent Document 2).

Further, there is also disclosed that the dust stuck to the drum is scraped off by a rake installed on the water downstream of the drum and scraped to a predetermined position by a rotating scraping device (see, for example, Patent Document 3).

Japanese Unexamined Patent Publication No. 2011-84870 Japanese Unexamined Patent Publication No. 2014-31624 Japanese Unexamined Patent Publication No. 2006-307518

However, since the dust removing device described in Patent Document 1 is configured to capture the dust flowing in the water channel by the claw portion of the orbiting scraping conveyor, the dust flowing on both sides of the scraping conveyor cannot be captured.
Further, since the pumping conveyor is provided on the upstream side of the water turbine, the flow rate and the flow velocity of the water flow are reduced by the pumping conveyor. Therefore, the water turbine cannot be rotated effectively, and as a result, the scraping conveyor cannot be rotated efficiently, and dust cannot be captured well.

Further, since the dust removing device described in Patent Document 2 has a configuration in which dust adhering to the screen is captured by the claw portion of the orbiting scraping conveyor, the portion where the scraping conveyor rises on the front side (upstream side) of the screen. Not only that, a so-called double belt structure is formed in which there is a portion that inevitably descends. Therefore, the claw portion of the descending belt portion also catches the dust, and a large amount of dust is caught between the scraping conveyor and the lower end portion of the screen. As a result, the pumping conveyor malfunctions, and dust cannot be captured well.

Further, the dust removing device described in Patent Document 3 cannot catch dust well because the dust slips through between the net-like screen and the rake. In addition, this is to prevent the dust in the drum from accumulating in the drum by discharging the dust in the drum from the side of the drum by using the water flow, so that the dust discharged from the side of the drum is downstream. Will be washed away.

Therefore, an object of the present invention is to provide a dust-removing structure for a water channel that can satisfactorily capture and discharge dust flowing through the water channel by utilizing the rotational force rotated by the water flow of the water channel.

In order to achieve the above object, the water channel dust removal structure of the present invention has an arcuate arcuate portion (11) protruding diagonally upward upstream of the water channel (100), and has a plurality of slits for receiving dust. (S) is formed in a comb shape in the width direction of the water channel (100), and the upstream lower end portion (12a) is fixed to the lower surface side of the water channel (10).
A plurality of claws (22) having a cylindrical shape provided on the downstream side close to the bar screen (10), protruding from the circumferential surface, entering the slit (S) of the bar screen (10), and placing dust on the bar screen (10). A drum (20) formed and rotated around a rotation axis (21) by a stream of water ,
A convex portion (105) formed on the upstream side of the drum (20) at the bottom (101) of the water channel (100) and changing the water flow upward.
The width is provided on the downstream side close to the drum (20), is gutter-shaped and extends in the width direction, and receives dust released downstream from the downstream end portion (13a) of the bar screen (10). Equipped with a gutter receiver (30) that flows in the direction,
The tip of the claw portion (22) of the drum (20) is from the slit (S) of the bar screen (10) at least from directly above the rotation axis of the drum (20) to just beside the upstream side. Also protrudes outward, but at a position rotated downstream from directly above the rotation axis (21) of the drum (20), it does not protrude outward from the slit (S) of the bar screen (10). It is characterized by the fact that it was set to.

Further, in the present invention, an extension portion (13) extending further to the downstream side is continuously provided on the downstream side of the arc portion (11) of the bar screen (10), and the claw portion (22) of the drum (20) is provided. The amount of protrusion of the tip from the slit (S) of the bar screen (10) gradually decreases to zero as it rotates from directly above the rotation axis (21) of the drum (20) to the downstream side. It is characterized by doing so.

Further, the present invention is characterized in that the dust receiver (30) is inclined in the width direction.

Further, the present invention is characterized in that the upstream lower end portion (12a) of the bar screen (10) is fixed to the convex portion (105).

Further, in the present invention, the water channel bottom (102) of the water channel (100) on the downstream side where the drum (20) is installed is connected to the water channel bottom (101) of the water channel (100) on the upstream side of the drum (20). It is also characterized by being lowered.

Further, in the present invention, the guide rail (40) extending in the width direction above the dust receiver (30) and the inside of the dust receiver (30) which is movable in the width direction along the guide rail (40). It is characterized by comprising a trolley (50) provided with a dust removing portion (51) for scraping out the dust from one side in the width direction to the other side.

Further, the present invention has a water wheel (60) that is rotated by the water flow of the water channel (100) to pump water, and a weight (70) that is provided with a water inlet (78) that can be raised and lowered on the other side in the width direction. ), A transport channel (80) for sending the water pumped up by the water turbine (60) to the inlet (78) of the weight (70), and a liftable balancer (90) provided on one side in the width direction. ), And a wire (W) for connecting the weight (70) and the balancer (90) and also connecting the carriage (50) between the weight (70) and the balancer (90).
When water is sent to the weight (70), the weight (70) descends and the balancer (90) rises, and the wire (W) is pulled from one side in the width direction to the other side. When the trolley (50) moves from one side of the fixed position to the other side, the dust in the dust receiver (30) is scraped out to the other side, and when the weight (70) descends to the lowest point, the weight The water in (70) is squeezed, the balancer (90) descends, the weight (70) rises, the wire (W) is pulled from the other side in the width direction to one side, and the trolley is accompanied by this. (50) is characterized in that it returns to the fixed position.

Further, the present invention is characterized in that the weight (70) has a shape in which self-reliance is unstable, and when it reaches the ground as the lowest point, it falls and water is trapped.

The symbols in parentheses indicate corresponding elements or corresponding items described in the drawings and the embodiment for carrying out the invention described later.

According to the present invention, when the drum is rotated by the water flow, the claw portion provided on the drum enters the slit of the bar screen and carries the dust received by the bar screen, and the tip of the claw portion is at least the rotation shaft of the drum. From directly above to just beside the upstream side, it protrudes outward from the slit of the bar screen, but at the position rotated from directly above the rotation axis of the drum to the downstream side, it is outward from the slit of the bar screen. Since it does not protrude, the dust is separated from the bar screen and automatically flushed to the dust receiver.
As described above, according to the present invention, the drum can be satisfactorily captured and discharged by automatically rotating the drum by the water flow of the water channel.

Further, according to the present invention, since the dust receiver is inclined in the width direction, the dust is smoothly discharged by the water flowing from the higher side to the lower side.

Further, according to the present invention, a convex portion for changing the water flow upward is formed on the upstream side of the drum at the bottom of the water channel, and the lower end portion on the upstream side of the bar screen is fixed to the convex portion, so that the drum is the lower half thereof. The upper half of the section efficiently rotates from the upstream side to the downstream side of the channel.

Further, according to the present invention, the bottom of the waterway on the downstream side where the drum is installed is lower than the waterway bottom of the waterway on the upstream side of the drum, so that the drum is also above the lower half thereof. The half rotates more efficiently from the upstream side to the downstream side of the channel.

Further, according to the present invention, a guide rail extending in the width direction is provided above the dust receiver, and a dust removing portion that is movable in the width direction along the guide rail and scrapes the dust in the dust receiver from one side to the other in the width direction. Since the provided trolley is provided, the dust in the dust receiver can be reliably discharged in a short time.

Further, according to the present invention, when the water pumped by the water wheel is sent to the weight through the transport channel, the weight is lowered and the balancer is raised, and the wire is pulled from one side in the width direction to the other side. As the dolly moves from one side to the other in the fixed position, the dust in the dust receiver is scraped out to the other side, and when the weight descends to the lowest point, the water in the weight is squeezed and the balancer descends and the weight. Ascended, the wire was pulled from the other side in the width direction to one side, and the dolly returned to the fixed position accordingly, so that the dust in the dust receiver could be easily and surely discharged only by the force of the water flow. can.

It is a schematic side view which shows the dust removal structure for a waterway which concerns on embodiment of this invention. It is a schematic plan view which shows the dust removal structure for a waterway which concerns on embodiment of this invention. It is the AA arrow view of FIG. It is a BB arrow view of FIG. 1. It is a schematic perspective view which looked at the main part of the dust removal structure for a waterway which concerns on embodiment of this invention from the upstream side to the downstream side. It is a schematic perspective view which looked at the main part of the dust removal structure for a waterway which concerns on embodiment of this invention from the downstream side to the upstream side. It is an enlarged side view which shows the relationship between the bogie and the stopper shown in FIG. It is a schematic side view which shows the other aspect of the dust removal structure for a waterway which concerns on embodiment of this invention.

A waterway dust removal structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. 1 and 2 are schematic side views and schematic plan views of a dust removal structure for a waterway, FIGS. 3 and 5 are views viewed from the upstream side, and FIGS. 4 and 6 are views viewed from the downstream side. ..

The water channel dust removal structure according to the embodiment of the present invention is installed and used in a water channel 100 or the like used for hydroelectric power generation, and is provided on the upstream side of the water channel 100 to form a plurality of slits S for receiving dust. Close to the bar screen 10 and the drum 20 having a cylindrical shape provided on the downstream side close to the bar screen 10 and having a plurality of claw portions 22 that enter the slit S of the bar screen 10 and place dust on the bar screen 10. It is provided with a gutter-shaped dust receiver 30 provided on the downstream side of the water.
Further, a trolley 50 provided with a guide rail 40 on the upper part of the dust receiver 30 and a dust removing portion 51 that is movable along the guide rail 40 and scrapes out the dust in the dust receiver 30 is provided. Further, on the upstream side of the drum 20, a water wheel 60 for pumping water used for moving the bogie 50 is provided.

In FIG. 3, the guide rail 40 and the carriage 50 provided on the downstream side of the drum 20 are not shown. Further, in FIGS. 4 to 6, the water turbine 60 provided on the upstream side of the drum 20 is not shown.

The bar screen 10 is fixed to the water channel 100, and has an arcuate arcuate portion 11 projecting diagonally upward upstream of the water channel 100 and an arcuate arcuate portion 11 obliquely upstream and downward from the upstream end portion of the arcuate portion 11. The upstream extension portion 12 (which may extend vertically in the downward direction) and the downstream end of the arc portion 11 extend diagonally downward in the downstream side (horizontally extend in the downstream side). A plurality of slits S for receiving dust are formed in a comb shape in the width direction of the water channel 100 so as to have a downstream extension portion 13 (which may be possible). The slit S is formed in the vertical direction, that is, in parallel in the upstream / downstream direction, catches dust in and around the slit S, and allows water to flow downstream through the slit S.

The upstream lower end portion 12a of the upstream extension portion 12 is fixed to the lower side of the water channel 100. Here, a convex portion 105 that changes the water flow upward is formed on the upstream side of the drum 20 in the water channel bottom 101 of the water channel 100, and the upstream lower end portion 12a is fixed to the upper surface of the convex portion 105 via the metal fitting 110. There is.

The drum 20 rotates around a rotation shaft 21 extending in the width direction of the water channel 100, and the upper half thereof is rotated from the upstream side to the downstream side of the water channel 100 by the water flow. The drum 20 is rotated clockwise as shown in FIG. 1 by the water flow changed upward by the convex portion 105 provided on the upstream side of the drum 20.
By lowering the water channel bottom 102 of the water channel 100 on the downstream side where the drum 20 is installed lower than the water channel bottom 101 of the water channel 100 on the upstream side of the drum 20, the water flow upward from the upstream side is the upper half of the drum 20. The drum 20 is made to rotate efficiently.

The drum 20 is formed with a plurality of claw portions 22 that protrude outward in the radial direction from the drum 20 and enter the slit S of the bar screen 10 on which dust is placed. The tip of the claw portion 22 projects outward from the slit S of the bar screen 10 at least from directly above the rotation axis of the drum 20 to just beside the rotation axis of the drum 20, but the rotation axis 21 of the drum 20 At the position rotated from directly above to the downstream side, the bar screen 10 does not protrude outward from the slit S. Here, the amount of protrusion of the bar screen 10 of the claw portion 22 from the slit S gradually decreases as the drum 20 rotates from directly above the rotating shaft 21 to the downstream side, and finally becomes zero. There is.

The number of claws 22 and the arrangement and shape with respect to the drum 20 are not particularly limited, and any dust caught on the bar screen 10 may be placed and removed from the bar screen 10. For example, at least one claw portion 22 may be inserted into one slit S, or the claw portion 22 may be inserted into every other slit S. Here, as shown in FIG. 1, the adjacent claw portions 22 are positioned 180 degrees different from each other with respect to the rotation axis 21 of the drum 20, and one claw portion 22 is provided for each slit S. But it may be.
In the present embodiment, the width of the slit S is in the range of 1.5 to 2 cm, and 30 slits S are provided in the width direction.

The dust receiver 30 extends in the width direction of the water channel 100 and receives dust released downstream from the downstream end portion 13a of the downstream extension portion 13 of the bar screen 10 from one side in the width direction (left side in FIG. 4). It is designed to flow to the other side (right side in FIG. 4). The dust receiver 30 is slightly inclined so that the other side through which the dust flows is lower than the one side. The bottom 31 of the dust receiving 30 is lower than the downstream end 13a of the downstream extension 13, and an inclined portion 32 extending from the bottom 31 to the upper end of the downstream end 13a of the downstream extension 13 of the bar screen 10 is formed. Has been done. Further, an inclined portion 33 that inclines upward from the bottom portion 31 on the downstream side is also formed so that dust can be reliably received and flowed to the other side in the width direction.

The guide rail 40 extends in the width direction of the water channel 100 just above the dust receiver 30 in the same manner as the dust receiver 30. Its width direction is longer than the dust receiver 30 and extends so as to project to one side and the other side in the width direction.

The carriage 50 is attached to the lower part of the guide rail 40 so as to be movable in the width direction along the guide rail 40. The dust removing portion 51 provided on the trolley 50 has an L-shaped cross section in which the lower end portion is bent to the other side in the width direction, and the trolley 50 moves to discharge dust from the dust receiving 30 to the other side in the width direction. ing.

As shown in FIG. 4, the carriage 50 is connected to a wire W extending in the width direction of the water channel 100, and a weight 70 is connected to the other end of the wire W in the width direction, and the weight 70 is connected to one side in the width direction. A balancer 90 is connected to the end of the.
On the other side, the wire W has a first pulley 71 provided on the other side in the width direction along the guide rail 40, and a second pulley 72 and a third pulley provided in parallel at a high position from the first pulley 71. After being wound around the pulley 73, it is connected to the weight 70. On the contrary, on one side, the wire W has a fourth pulley 74 provided on one side in the width direction along the guide rail 40, and a fifth pulley 75 and a fifth pulley 75 provided in parallel at a high position from the fourth pulley 74. After being wound around the sixth pulley 76, it is connected to the balancer 90.

The weight 70 has a triangular pyramid shape with a downward apex and an unstable shape. Further, the upper surface thereof is opened to serve as a water injection port 78. Further, the weight 70 can be raised and lowered from the upper position of the lower part of the third pulley 73 (indicated by the solid line in FIG. 4) to the lower position of the ground (lowest point) (indicated by the alternate long and short dash line in FIG. 4). .. Further, the top of the weight 70 is rounded (may be a corner), and when the weight 70 reaches the ground (floor surface), it falls and the water injected from the injection port 78 is collected. The fixed position of the weight 70 is the upper position shown by the solid line.

The balancer 90 is a weight for returning the weight 70 that has reached the lower position to the upper position, and is located below the lowest point from the upper position (indicated by the alternate long and short dash line in FIG. 4) at the lower part of the sixth pulley 76 (FIG. 4). In 4, it is possible to move up and down to (shown by the solid line). The fixed position of the balancer 90 is the lower position shown by the solid line. The balancer 90 may reach the ground (floor surface) at a lower position or may be in a state of floating from the ground.

The water pumped by the water turbine 60 is automatically sent to the inlet 78 of the weight 70 through the transport channel 80.
The water turbine 60 is provided at a high position unlike the drum 20 which is almost entirely submerged in water. In the water turbine 60, only the lower half side of the water channel 100 on the upstream side of the bar screen 10 is immersed in the water channel 100, and the upper half portion rotates in the opposite direction to the drum 20 from the downstream side to the upstream side. (Rotates counterclockwise in Fig. 1). The water turbine 60 is provided with tubs 61 for fetching water at predetermined intervals in the circumferential direction. When the water turbine 60 rotates, water enters the tub 61 on the lower side, and water flows out from the tub 61 on the upper side and flows into the transport water channel 80. I am doing it.

The transport channel 80 is inclined so as to be lowered from the upstream side to the downstream side, and the water pumped by the water fetching tub 61 of the water turbine 60 flows to the downstream side and is poured into the inlet 78 of the weight 70. It is designed to be used.

When water is poured from the inlet 78 of the weight 70, the weight 70 becomes heavier, the weight 70 descends, the balancer 90 rises from the lower position, and the wire W is pulled from one side to the other in the width direction of the water channel 100. Along with this, the trolley 50 moves from one side of the fixed position to the other side, so that the dust in the dust receiving 30 is scraped out to the other side by the dust removing portion 51 provided on the trolley 50. As shown in FIG. 2, the dust scraped from the dust receiver 30 to the other side in the width direction of the water channel 100 falls onto the spillway 200 and is washed out and collected. The dust scraped from the dust receiver 30 may be received and collected on the spot.

When water is poured from the injection port 78 of the weight 70 and the weight 70 descends to the ground (floor surface) at the lowest point, the weight 70 falls, the water inside is squeezed, the balancer 90 descends, and the weight 70 rises. Then, the wire W is pulled from the other side in the width direction of the water channel 100 to one side, and the carriage 50 returns to the fixed position accordingly.

Here, a stopper 41 is provided on one side of the guide rail 40 so that the weight 70 drops sharply (at once) when the amount of water poured from the injection port 78 of the weight 70 exceeds a certain amount. Further, when the carriage 50 returns from the other side in the width direction of the water channel 100 to one side, it hits the stopper 41 to alleviate the impact. The relationship between the carriage 50 and the stopper 41 will be described with reference to FIG. 7.

When the trolley 50 is in a fixed position, the bar 52 extending from the downstream side surface of the trolley 50 to the downstream side is one side of a receiving plate 43 having an L-shaped cross section provided on the upper portion of the base 42 constituting the stopper 41 ( It is located on one side of the water channel 100 in the width direction (FIG. 7 (a)).
The receiving plate 43 is composed of a vertical plate portion 43a and a horizontal plate portion 43b extending to one side, and the other side of the vertical plate portion 43a is a spring material 44 that expands and contracts in the horizontal direction, and a first support portion provided on the upper portion of the base 42. It is connected to 45, and the lower side of the horizontal plate portion 43b is connected to a second support portion 47 provided on one side side surface portion of the base 42 by a spring material 46 that expands and contracts in the vertical direction.

Then, as water is poured from the injection port 78 of the weight 70 and the weight 70 is lowered, the trolley 50 is pulled from a fixed position to the other side in the width direction of the water channel 100 and moves, and the bar 52 of the trolley 50 is a receiving plate. Contact 43. When the bar 52 of the dolly 50 comes into contact with the receiving plate 43, the receiving plate 43 tends to rotate toward the other side due to the force. That is, the vertical plate portion 43a of the receiving plate 43 descends to the other side, and the horizontal plate portion 43b tries to rotate so as to rise (FIG. 7 (b)).
Here, since the receiving plate 43 is supported by the spring materials 44 and 46, the receiving plate 43 is completely toward the other side until the amount of water poured from the injection port 78 of the weight 70 reaches a certain amount. The bar 52 of the carriage 50 does not rotate and does not separate from the receiving plate 43 to the other side, but when the amount of water poured from the injection port 78 of the weight 70 exceeds a certain amount, the receiving plate 43 moves to the other side. The bar 52 of the carriage 50 is located on the other side of the stopper 41 away from the receiving plate 43 on the other side (FIG. 7 (c)). At this time, the receiving plate 43 is returned to the original position as shown in FIG. 7A by the action of the spring materials 44 and 46.
When the bar 52 of the trolley 50 separates from the receiving plate 43 to the other side, the weight 70 suddenly (at a stretch) descends, and the trolley 50 moves vigorously from one side in the width direction of the water channel 100 to the other side, thereby causing the trolley. The dust in the dust receiver 30 is scraped out to the other side by the dust removing portion 51 provided in the 50.

Next, when the weight 70 descends to the ground (floor surface) at the lowest point and falls and the water inside is sunk, the balancer 90 descends and the weight 70 rises, and the wire W is on the other side in the width direction of the channel 100. When the dolly 50 is pulled to one side from the other side and moves from the other side to the other side so that the dolly 50 returns to a fixed position (FIG. 7 (c)), the bar 52 of the dolly 50 moves to the other side of the vertical plate portion 43a of the receiving plate 43. The receiving plate 43 abuts on the side and rotates toward one side (FIG. 7 (d)). At this time, the vertical plate portion 43a of the receiving plate 43 is lowered to one side, and the horizontal plate portion 43b is rotated so as to be lowered. Then, when the bar 52 of the carriage 50 moves to one side of the receiving plate 43, the receiving plate 43 is returned to the original position as shown in FIG. 7A by the action of the spring members 44 and 46.

In this way, when the bar 52 of the bogie 50 comes into contact with the receiving plate 43, the spring materials 44 and 46 contract and the impact is alleviated.

The dust removing portion 51 provided on the carriage 50 is rotatable so that the lower side rises to the other side with the upper part as a fulcrum, but does not rotate to one side. Therefore, even if dust remains on one side of the dust removing portion 51 when the carriage 50 moves from the other side to the other side in the width direction of the water channel 100, the dust removing portion 51 is a dotted line shown in FIG. 7 (c). Since the lower part rotates so as to float to the other side as in the above, the dust is prevented from being carried to one side in the dust receiver 30.

According to the water channel dust removal structure configured as described above, when the drum 20 is rotated by the water flow, the claw portion 22 provided on the drum 20 enters the slit S of the bar screen 10 and the dust received by the bar screen 10 is placed on the drum 20. do.
The tip of the claw portion 22 of the drum 20 protrudes outward from the slit S of the bar screen 10, but does not protrude outward at a position rotated downstream from directly above the rotation shaft 21 of the drum 20. Therefore, the dust is separated from the bar screen 10 and flowed to the dust receiver 30.
As the trolley 50 moves, the dust that has flowed into the dust receiver 30 is scraped from one side in the width direction of the water channel 100 to the other by the dust removing portion 51, falls into the spillway 200, and is discharged to the outside. It has become.
When the water level rises and becomes higher than the uppermost end of the bar screen 10, the dust is directly flushed to the dust receiver 30, then falls into the spillway 200 and is discharged to the outside.
As described above, according to the water channel dust removing structure of the present embodiment, the drum 20 is automatically rotated by the water flow of the water channel 100, so that dust can be satisfactorily captured and discharged.

In the present embodiment, the water pumped by the water turbine 60 is poured into the weight 70 and the weight 70 is lowered to move the carriage 50. However, the water is pumped by a pump (not shown) and sent to the weight 70. You may try to do it. According to this, the water turbine 60 and the transport water channel 80 can be omitted.

Further, the dust that has been washed away by the dust receiver 30 is scraped out by the dust removing portion 51 of the trolley 50 and dropped into the spillway 200. It can also be made to fall to the side. In this case, the device for moving the bogie 50, that is, the guide rail 40, the water wheel 60, the weight 70, the transport channel 80, the balancer 90, the wire W, the stopper 41, and the plurality of pulleys 71 to 76 becomes unnecessary.
Further, a stopper 41 is provided so that when the amount of water poured from the injection port 78 of the weight 70 exceeds a certain amount, the weight 70 is rapidly (at once) lowered so as to vigorously scrape out by the dust removing portion 51. However, without providing the stopper 41, the weight 70 is gradually dropped according to the amount of water poured from the injection port 78 of the weight 70, and the weight 70 is gradually scraped out by the dust removing unit 51 in response to this. It can also be.

Further, a convex portion 105 is provided in the water channel 100 so that the drum 20 can be efficiently rotated clockwise as shown in FIG. 1 by the water flow changed upward. However, the drum 20 is rotated as shown in FIG. Any structure may be used as long as it can be rotated around.
Further, although the dust receiver 30 is tilted so as to be high in one direction in the width direction of the water channel 100 and low in the other direction, the dust receiver 30 may be horizontal and scraped out by the dust removal portion 51 of the trolley 50. Further, when the trolley 50 is not used, the dust in the dust receiver 30 may be discharged outward from either one direction or the other direction in the width direction of the water channel 100 only by the water flow.

In addition, another aspect of the dust removal structure for a waterway which concerns on this embodiment is shown in FIG.
In the one shown in FIG. 8, the bar screen 10 has an arcuate arcuate portion 11, but the extension portion 14 on the upstream side thereof is horizontal and extends toward the upstream side. Further, the extension portion 15 on the downstream side also extends horizontally toward the downstream side.
Further, the water channel 100 is inclined so that the water channel bottom 101 gradually lowers from the upstream to the front of the bar screen 10, and the lower portion of the bar screen 10 is a horizontal water channel bottom 102. At the place where the bottom of the water channel is switched, an inclined table 111 that rises upstream or downstream is provided so that the water flow is directed upward and the drum 20 is rotated clockwise (FIG. 8). An upstream end portion 14a of the bar screen 10 is attached to the upper portion of the tilting table 111 via a metal fitting 112. Further, the downstream end portion 15a of the bar screen 10 is fixed to the lower surface of the dust receiving 30.

Further, the drum 20 is provided with claw portions 22 corresponding to the slit S of the bar screen 10, and 16 pedestals 23 for mounting the claw portions 22 are provided at intervals of 22.5 degrees (°) in the circumferential direction. It can be installed in various positions. Here, a case where two claw portions 22 are provided with a gap of 90 degrees (°) is shown.
Further, the dust receiving 30 has an L-shaped cross section and has a horizontal portion and a vertical portion, and the horizontal portion is located below the water surface so that the dust can be received by the flow of water.
Further, the dust removing portion 51 provided on the trolley 50 is not an L-shaped cross section but a plate-shaped one. The various pulleys 71 to 76 are installed on the upper part of the gantry 150.
Further, the water turbine 60 is shown in which 12 tubs 61 are evenly provided.

10 Bar screen 11 Arc part 12 Extension part (upstream extension part)
12a Upstream side lower end 13 Extension (downstream side extension)
13a Downstream end 14 Extension (upstream extension)
14a Upstream end 15 Extension (downstream extension)
15a Downstream end 20 Drum 21 Rotating shaft 22 Claw 23 Pedestal 30 Dust receiver 31 Bottom 32 Tilt 33 Tilt 40 Guide rail 41 Stopper 42 Base 43 Receiving plate 43a Vertical plate 43b Water flat plate 44 Spring material 45 1 Support 46 Spring material 47 2nd support 50 Cart 51 Dust removal section 52 Bar 60 Waterway 61 Pail 70 Weight 71 1st pulley 72 2nd pulley 73 3rd pulley 74 4th pulley 75 5th pulley 76 6th pulley 78 Injection port 80 Transport channel 90 Balancer 100 Channel 101 Channel bottom 102 Channel bottom 105 Convex 110 Metal fittings 111 Inclined table 112 Metal fittings 150 Stand 200 Sewage channel S Slit W wire

Claims (8)

It has an arc-shaped arc portion that protrudes diagonally upward upstream of the water channel, and a plurality of slits for receiving dust are formed in a comb shape in the width direction of the water channel, and the lower end portion on the upstream side is fixed to the lower surface side of the water channel. With the bar screen
A cylindrical shape provided on the downstream side close to the bar screen, which protrudes from the circumferential surface and enters the slit of the bar screen to form a plurality of claws on which dust is placed, and is rotated around a rotation axis by a water flow. With the drum
A convex portion formed on the upstream side of the drum at the bottom of the channel and changing the water flow upward.
It is provided on the downstream side close to the drum, and is provided with a gutter-shaped dust receiver that extends in the width direction and receives dust released downstream from the downstream end of the bar screen and flows in the width direction.
The tip of the claw portion of the drum projects outward from the slit of the bar screen, at least from directly above the rotation axis of the drum to just beside the upstream side, but is true of the rotation axis of the drum. A dust removal structure for a water channel, characterized in that it does not protrude outward from the slit of the bar screen at a position rotated from the top to the downstream side. An extension portion extending further downstream is continuously provided on the downstream side of the arc portion of the bar screen, and the amount of protrusion of the tip of the claw portion of the drum from the slit of the bar screen is true of the rotation axis of the drum. The dust removal structure for a water channel according to claim 1, wherein the dust removal structure is gradually reduced to zero as it rotates from the top to the downstream side. The dust removing structure for a water channel according to claim 1 or 2, wherein the dust receiver is inclined in the width direction. The dust removing structure for a water channel according to any one of claims 1 to 3, wherein the lower end portion on the upstream side of the bar screen is fixed to the convex portion. The waterway according to any one of claims 1 to 4, wherein the waterway bottom of the waterway on the downstream side where the drum is installed is lower than the waterway bottom of the waterway on the upstream side of the drum. Dust removal structure. A guide rail extending in the width direction and a dust removing portion that is movable in the width direction along the guide rail and scrapes the dust in the dust receiver from one side to the other are provided on the upper part of the dust receiver. The dust removing structure for a waterway according to any one of claims 1 to 5, further comprising a trolley. A water wheel that rotates by the water flow of the water channel to pump water, a weight provided with a water inlet that can be raised and lowered on the other side in the width direction, and water pumped by the water wheel are sent to the weight inlet. A transport channel, a liftable balancer provided on one side in the width direction, and a wire for connecting the weight and the balancer and also connecting the carriage between the weight and the balancer are provided.
As water is sent to the weight, the weight is lowered and the balancer is raised, the wire is pulled from one side in the width direction to the other side, and the dolly is moved from one side to the other side in the fixed position. By moving to, the dust in the dust receiver is scraped to the other side, and when the weight descends to the lowest point, the water in the weight is squeezed, the balancer descends, and the weight rises, and the wire The dust-removing structure for a water channel according to claim 6, wherein the trolley is pulled from the other side in the width direction to one side, and the trolley is returned to the fixed position accordingly. The dust-removing structure for a waterway according to claim 7, wherein the weight has a shape in which self-reliance is unstable and falls to prevent water from falling when it reaches the ground as the lowest point.

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