JP2019007140A - Hydraulically-driven dust removal device - Google Patents

Abstract

To rotate a water wheel with the water flow of a water channel, and catch and discharge dust flowing through the water channel with a rotational force.SOLUTION: A hydraulically-driven dust removal device comprises: a water wheel 10 rotating with a water flow F of a water channel C; a power transmission plate 30 provided on a downstream side of the water wheel 10 and rotated around a shaft 31 via an interlocking member 20 by a rotational force of the water wheel 10; a bar screen 40 provided in the water channel C on the downstream side of the power transmission plate 30 and formed with a plurality of slits 41 for receiving dust; a scraping machine 50 provided so as to be movable upward and downward on an upstream side close to the bar screen 40 and having a claw portion 51 which enters the slits 41 and puts up dust on it; and a wire 70 having one end connected to an end of the power transmission plate 30 and the other end connected to the scraping machine 50 via a pulley 60.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hydraulically driven dust removing device. More specifically, the present invention relates to a device that uses the rotational force of a water turbine that is rotated by a water flow in the water channel to lift and discharge the dust accumulated in the water channel.

For example, a water channel used for hydropower generation is provided with a dust removing device for removing dust that flows through the water channel.
In the conventional dust removing device, a water turbine is provided on the downstream side of the water channel, a rake conveyor having a rake is provided on the downstream side, the water wheel is rotated by the water flow of the water channel, and the rake conveyor is circulated by the rotational force, The thing of catching the dust which flows through a water channel by the nail | claw part of the rafting conveyor is disclosed (for example, refer patent document 1).

  In addition, a draft conveyor and screen with a water wheel and a claw are provided in the water channel, the water wheel is rotated by the water flow in the water channel, and the draft conveyor is rotated by the rotational force. The thing which catches the adhering dust is also indicated (for example, refer to patent documents 2).

JP 2011-84870 A JP, 2014-31624, A

However, since the dust removal apparatus described in Patent Literature 1 is configured to capture the dust flowing through the water channel at the claw portion of the circulating scraping conveyor, the dust flowing on both sides of the scraping conveyor cannot be captured.
Moreover, since the rake conveyor is provided on the upstream side of the water wheel, the speed of the water flow is reduced by the rake conveyor. Therefore, the water wheel cannot be effectively rotated, and as a result, the rake conveyor cannot be efficiently circulated and the dust cannot be captured well.

  Moreover, since the dust removal apparatus of patent document 2 is the structure which catches the dust adhering to a screen with the nail | claw part of the revolving scraping conveyor, it is the part to which a scraping conveyor raises to the front side (upstream side) of a screen. In addition to this, a so-called double belt structure is formed in which a part that inevitably descends exists. For this reason, the claw portion of the descending belt portion also captures dust, and a large amount of dust is caught between the scraping conveyor and the lower end portion of the screen. As a result, a malfunction of the scraping conveyor occurs, and the dust cannot be captured well.

  Therefore, an object of the present invention is to provide a hydraulically driven dust removing device that can rotate a water turbine using the water flow of the water channel and can satisfactorily capture and discharge the dust flowing through the water channel using the rotational force. It is to provide.

  In order to achieve the above object, a hydraulically driven dust removing device according to the present invention is provided on a downstream side of a water turbine (10) rotated by a water flow (F) of a water channel (C) and the water turbine (10). A power transmission plate (30) rotating around an axis (31) extending in the width direction of the water channel (C) via the interlocking member (20) by the rotational force of (10), and the power transmission plate (30 The bar screen (40) provided in the water channel (C) on the downstream side of the pipe and receiving the dust and having a plurality of slits (41) formed in a comb shape, and the upstream side close to the bar screen (40) A scraper (50) having a claw portion (51) which is provided so as to be movable up and down and enters the slit (41) of the bar screen (40) and mounts dust, and one end portion of the power transmission plate (30). And the other end is connected to the scratch. The frying machine (50) includes a wire (70) connected via a pulley (60) located above the raking machine (50), and the power transmission plate is generated by the rotational force of the water turbine (10). (30) is rotated to move the wire (70) and the scraper (50) is moved up and down so that the dust placed on the claw portion (51) can be conveyed upward. .

  The present invention also provides a water turbine (10) that is rotated by the water flow (F) of the water channel (C) and a downstream side of the water turbine (10), and the interlocking member (20 ) Through a power transmission plate (30) rotating around an axis (31) extending in the width direction of the water channel (C), and in the water channel (C) on the downstream side of the power transmission plate (30). A bar screen (40) provided with a plurality of comb-shaped slits (41) for receiving dust, and provided on the upstream side adjacent to the bar screen (40) so as to be movable up and down; 40) a scraper (50) having a claw part (51) for entering a slit (41) and mounting dust, and one end part of which is connected to the first end part (30a) of the power transmission plate (30). The other end is the upper part of the scraper (50) The first wire (71) connected via the first pulley (61) located above the scraper (50), and one end of the first wire (71) is the second end of the power transmission plate (30). A second pulley (62) positioned above the scraper (50) and the scraper (50). A second wire (72) connected via a third pulley (63) located below the wheel, and by rotating the power transmission plate (30) by the rotational force of the water turbine (10), The first wire (71) and the second wire (72) are moved alternately in opposite directions to move the scraper (50) up and down, so that the dust on the claw portion (51) can be conveyed upward. It is characterized by that.

  In the present invention, a dust collecting water channel (D) independent of the water channel (C) is formed above the water channel (C) on the downstream side of the bar screen (40), and is mounted on the claw portion (51). The dust can be transported to the dust collecting water channel (D).

  Further, according to the present invention, the claw portion (51) is provided in a hinge type, and when the scraper (50) moves up, the slit (41) of the bar screen (40) is loaded with the weight of the dust to be mounted. ), And is in a non-projecting state due to water pressure received from below when moving downward.

  Furthermore, the present invention is characterized in that a guide portion (80) for guiding the lifting and lowering movement of the raking machine (50) is provided.

  Note that symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments for carrying out the invention to be described later.

According to the present invention, a water wheel that is rotated by the water flow of the water channel, a power transmission plate that is rotated by the rotational force of the water wheel via the interlocking member, a bar screen in which a plurality of slits are formed, and a slit in the bar screen. A scraper having a claw part for placing dust, and a wire having one end connected to the end of the power transmission plate and the other end connected to the scraper via a pulley located above the scraper. Since it is provided, the power transmission plate can be rotated by the rotational force of the water wheel to move the wire and the scraper can be moved up and down, and the dust placed on the claw portion can be conveyed upward.
Thereby, a water wheel can be rotated using the water flow of a water channel, and the dust which flows through a water channel can be caught well, and it can discharge. In addition, although the lifting movement of the lifting machine is performed by moving the wire, the lowering movement can be performed by the weight of the lifting machine.

Further, according to the present invention, the water wheel rotated by the water flow of the water channel, the power transmission plate rotated by the rotational force of the water wheel via the interlocking member, the bar screen formed with a plurality of slits, and the slit of the bar screen A scraper having a claw portion for placing a dust trap, and one end portion connected to the first end portion of the power transmission plate, the other end portion being a first portion located above and above the scraper A first wire connected through a pulley, one end connected to the second end of the power transmission plate, and the other end to the lower part of the hoisting machine, Since the second wire connected through the third pulley located below is provided, the power transmission plate is rotated by the rotational force of the water turbine to alternately turn the first wire and the second wire in opposite directions. Move the hoisting machine up and down It is possible.
Thereby, the dust put on the claw part can be conveyed upward. Therefore, the water turbine can be rotated using the water flow in the water channel, and the dust flowing through the water channel can be satisfactorily captured and discharged using the rotational force.

  Further, according to the present invention, a dust collecting water channel independent of the water channel is formed in the upper part of the water channel on the downstream side of the bar screen, and the dust placed on the claw portion can be conveyed to the dust collecting water channel. The dust trapped at the claw can be discharged into the dust collecting channel. Thereby, the dust which flows through a water channel can be discharged | emitted more favorably.

  Further, according to the present invention, the claw portion is provided in a hinge type, and when the scraper moves upward, the protruding state enters the slit of the bar screen with the weight of the dust to be mounted, and from the bottom when moving downward. Since the non-projecting state is achieved by the received water pressure, a complicated mechanism is not required, and the claw portion can be brought into a projecting state and a non-projecting state only by a simple hinge mechanism.

  In addition, when the claw part is moved downward, it is in a non-projecting state, so that the dust collected in the slit is pushed down, and the dust is placed between the lower end of the bar screen or between the scraper and the lower end of the bar screen. It is possible to prevent a situation such as biting. Thereby, a dust can be discharged | emitted more favorably.

  Furthermore, according to the present invention, since the guide portion that guides the lifting and lowering movement of the scraper is provided, the scraper can be smoothly lifted and lowered. Therefore, the dust can be discharged more satisfactorily.

It is a schematic perspective view which shows embodiment of the hydraulic drive dust removal apparatus which concerns on embodiment of this invention. It is a schematic side view which shows embodiment of the hydraulic drive dust removal apparatus which concerns on embodiment of this invention. It is a schematic plan view of the hydraulic drive dust removal apparatus which concerns on embodiment of this invention. It is a partially expanded view which shows operation | movement of the hydraulic drive dust removal apparatus which concerns on embodiment of this invention (The state which has a scraper in the descent | fall limit) is shown. It is a partially expanded view which shows operation | movement of the hydraulic drive dust removal apparatus which concerns on embodiment of this invention (The state which has a scraper in a raise limit is shown). In the hydraulic drive dust removal apparatus which concerns on embodiment of this invention, it is an enlarged front view which shows the relationship between a rake and a guide part. In the hydraulic drive dust removal apparatus which concerns on embodiment of this invention, it is an enlarged front view which shows the relationship between the nail | claw part of a scraper and the slit of a bar screen. In the hydraulic drive dust removal apparatus which concerns on embodiment of this invention, it is an enlarged side view which shows operation | movement of the nail | claw part of a scraper. It is a principal part schematic side view which shows the hydraulic drive dust removal apparatus which concerns on other embodiment of this invention. It is a principal part schematic side view which shows the hydraulic drive dust removal apparatus which concerns on other embodiment of this invention.

  The first embodiment of the present invention will be described with reference to FIGS. 1 and 2 are a schematic perspective view and a schematic side view of the hydraulically driven dust removing device 1, and FIG. 3 is a plan view thereof.

  A hydraulically driven dust removing device 1 according to an embodiment of the present invention is used by being installed in a water channel C or the like used for hydroelectric power generation, and includes a water turbine 10, an interlocking member 20, a power transmission plate 30, a bar screen 40, a scraper. A frying machine 50 and a wire 70 (first wire 71 and second wire 72) are provided.

  The water turbine 10 is provided in the water channel C with its lower part immersed in water (below the water surface S), and is rotated by the water flow F around the shaft 11 provided along the width direction of the water channel C. As shown in FIGS. 1 and 3, the water turbine 10 is mounted in parallel with two shafts of the same size, and a concentric disk-shaped drive plate 12 having a smaller diameter is provided between the two. ing.

The power transmission plate 30 is provided immediately above the water channel C on the downstream side of the water turbine 10 (above the water surface S), and rotates via the interlocking member 20 by the rotational force of the water turbine 10. As shown in FIG. 3, the power transmission plates 30 are attached in parallel to a shaft 31 extending in the width direction of the water channel C, and rotate about the shaft 31. A concentric disc-shaped driven plate 32 having a smaller diameter than that of the two power transmission plates 30 is provided.
The interlocking member 20 can be composed of a normal member such as a chain, and is suspended between the drive plate 12 of the water turbine 10 and the driven plate 32 of the power transmission plate 30. The drive plate 12 has a smaller diameter than the driven plate 32 and transmits a larger rotational force to the driven plate 32 so that the power transmission plate 30 is reliably rotated.

The bar screen 40 is provided in the water channel C on the downstream side of the power transmission plate 30 and has a plurality of comb-shaped slits 41 in the vertical direction. Flow water through 41 downstream.
A discharge opening 42 is formed in the upper portion of the bar screen 40, and the dust placed on the claw 51 of the scraper 50 is discharged through the discharge opening 42 through the discharge opening 42.

The scraper (using a rake) 50 is provided on the upstream side close to the bar screen 40 so as to freely move up and down, and has a plurality of claw portions 51 that enter the slit 41 of the bar screen 40 and mount dust. The plurality of claw portions 51 have their base ends integrally provided on two claw substrates 51a provided in parallel.
That is, as shown in FIG. 6 to FIG. 8, the scraper 50 is attached to a scraper main body 55 having a substantially U-shaped cross section and to the upper surface thereof via four mounting portions 54 so as to be rotatable. In addition, a plurality of claw portions 51 provided integrally with each of the two claw substrates 51a, and a pair of rollers 56 provided on the left and right side surfaces of the lifting body 55 so as to be rotatable in the vertical direction.

A claw base 51 a having a plurality of claw parts 51 is provided integrally with a substantially triangular base 52, and a so-called hinge is attached to a mounting part 54 fixed to the upper end of the raking body 55 by a rotary shaft 53. It is pivotably attached to the type (pivot hinge type).
Therefore, the claw part 51 (the integrated part of the claw part 51 and the claw base 51a, hereinafter simply referred to as the claw part 51) is in a substantially horizontal state with the weight of the dust to be mounted when the scraper 50 moves upward. Form and enter the slit 41 of the bar screen 40. The horizontal state of the claw portion 51 is maintained by the lower end portion 52 a of the base portion 52 coming into contact with the upper surface of the lifting main body 55. Further, when the scraper 50 moves downward, the claw portion 51 becomes a non-protruding state almost upright by the water pressure received from below, and comes out of the slit 41.

  Further, guide portions 80 are provided in the vicinity of the left and right sides of the scraper 50. The guide portion 80 has a U-shaped plane cross section, and guides the lifting and lowering movement of the scraper 50 by allowing the roller 56 of the scraper 50 to enter the inside thereof.

  As shown in FIGS. 3 and 4, the first wire 71 has one end connected to the first end 30 a of one power transmission plate 30 and the other end of the base 52 of the scraper 50. The upper central part is connected via a first pulley 61 located above the scraper 50.

  Further, one end of the second wire 72 is connected to the second end 30 b of the other power transmission plate 30, and the other end is lifted to the central portion of the lower portion of the base 52 of the scraper 50. The second pulley 62 located above the machine 50 and the third pulley 63 located below the lifting machine 50 are connected. The first end 30a and the second end 30b face each other in a side view with the shaft 31 of the power transmission plate 30 as the center.

  In the present embodiment, a dust collecting water channel D independent of the water channel C is formed in an upper direction of the water channel C on the downstream side of the bar screen 40 in a direction substantially perpendicular to the water channel C, and is mounted on the claw portion 51. The collected dust is discharged into the dust collecting water channel D through the discharge opening 42 of the bar screen 40.

The hydraulic drive dust removing apparatus 1 according to the present embodiment operates as follows.
First, as shown in FIG. 4, when the water turbine 10 is rotated counterclockwise by the water flow F of the water channel C in a state where the scraper 50 is located at the lower limit, this rotational force is applied to the interlocking member 20. By this, it is transmitted from the drive plate 12 of the water turbine 10 to the driven plate 32 of the power transmission plate 30, and the power transmission plate 30 similarly rotates counterclockwise.

When the power transmission plate 30 rotates in the counterclockwise direction, the first wire 71 is pulled upstream, and the scraper 50 is moved upward through the first pulley 61, and at the same time, the second wire 72 is moved. Loosening to the downstream side and allowing the lifter 50 to move upward through the second pulley 62 and the third pulley 63. Thereby, the raking machine 50 can move up.
At this time, since the scraper 50 is guided by the guide unit 80, it can be smoothly moved upward.

  When the scraper 50 starts to move upward, the plurality of claw portions 51 connected to the main body portion in a pivot hinge manner are rotated by a rotating shaft 53 by dust existing at the lower end portion of the bar screen 40 and water pressure from above. Rotate downward about the center to form a substantially horizontal posture. The nail | claw part 51 which formed the substantially horizontal attitude | position enters the slit 41 of the bar screen 40, and moves up in that state. The substantially horizontal posture of the claw portion 51 is maintained by the lower end portion 52a of the base portion 52 coming into contact with the upper surface of the lifting main body 55 as described above.

  As a result, the claw portion 51 continues to move upward with the dust 41 accumulated around the slit 41 and the periphery thereof, and when reaching the ascending limit shown in FIG. It discharges to the dust collecting water channel D through the discharge opening 42 formed at the upper end. The dust discharged to the dust collecting water channel D flows through the dust collecting channel D and is collected at a predetermined place.

  When the water turbine 10 continues to rotate counterclockwise from the state where the scraper 50 is in the ascending limit, the first wire 71 is loosened downstream and the second wire 72 is upstream. Then, the lifter 50 is pulled through the second pulley 62 and the third pulley 63 and moved downward. At this time, the claw portion 51 of the scraper 50 rotates upward about the rotation shaft 53 by the water pressure received from below, forms a substantially upright posture, and comes out of the slit 41. In addition, if dust is collected around the slit 41 and its periphery when the scraper 50 is lowered, the claw portion 51 hits the lower portion of the claw portion 51. It is prevented from stopping by moving to the center upward and being caught by the dust.

  In addition, since the nail | claw part 51 slips out from the slit 41, the nail | claw part 51 does not push down the slit 41 and its surrounding dust. Therefore, it is possible to prevent a situation in which dust is caught in the lower end portion of the bar screen 40 or is caught between the bar screen 40 and the scraper 50.

  In this way, by continuously rotating the water wheel 10, the first wire 71 and the second wire 72 are alternately moved in opposite directions, and the scraper 50 is moved up and down continuously, so that the tab 51 The dust can be placed on the top, transported to the upper limit, and discharged through the dust collecting passage.

In addition, the coarse screen 90 can be arrange | positioned in the upstream of the water turbine 10, and the large fallen thing which cannot be captured with the scraper 50 can be collect | recovered by it.
In addition, since it is assumed that a falling material such as a rope that has passed through the coarse screen 90 is entangled with the scraper 50, a friction type torque limiter is attached so that the power transmission plate 30 is idled due to overload. it can. The power transmission plate 30 is provided in a fixed state. However, as a configuration in which a moving mechanism (not shown) is provided to freely change the fixed position, the moving range of the scraper 50 can be finely adjusted.

  Moreover, it is assumed that the water turbine 10 does not rotate well because the water level of the water channel C is lowered. In order to deal with such a situation, an elevating mechanism (not shown) may be attached to the water wheel 10 so as to move up and down according to the water level. Further, a motor can be provided in the vicinity of the water turbine 10. In that case, the water turbine 10 can be rotated by the water flow F of the water channel C and the motor, or only by the motor.

  The interlocking member 20 is preferably formed of a chain, but is not limited thereto, and can be formed of other members such as a lot rod. Further, the shape of the power transmission plate 30 is not limited, and may be a long plate shape as shown in FIG. 9, for example.

  Moreover, in the said embodiment, although the scraper 50 is raised / lowered using the 1st wire 71 and the 2nd wire 72, as shown in FIG. You can also. In this case, the lifting and lowering device 50 can be moved upward by a single wire 70, and the lowering and moving can be performed by the weight of the lifting device 50.

  Further, in any case where the lifting machine 50 is moved up and down by one wire or two wires, a weight member or a floating member is attached, and the weight member makes it easy to move down, and the lift member moves up and down. Can be made easier. The wire 70 can be composed of other linear members such as a chain in addition to a so-called wire.

  Moreover, the dust collecting water channel D can be made into a structure which can be made into a smooth surface by finishing the inner surface of the dust collecting iron or attaching a stainless steel plate so that dust such as dead leaves can be easily removed. Instead of or together with forming the dust collecting water channel D, as shown in FIG. 2, a dust collecting portion G is formed on the downstream side of the upper end portion of the bar screen 40, and is mounted on the claw portion 51 there. It is also possible to discharge the collected dust.

The hydraulically driven dust removing device 1 according to the present embodiment exhibits the following effects.
(1) Since the water turbine 10 is rotated by the water flow F flowing through the water channel C, it is extremely economical.
(2) Since the upstream side of the water turbine 10 is not provided with a conveyor or the like that blocks the water flow F as in the prior art, the water turbine 10 can be smoothly rotated by the water flow F. Thereby, the scraper 50 can also be moved up and down smoothly, and dust can be captured and discharged well.

(3) The scraper 50 has a structure in which the front side of the bar screen 40 is moved up and down, and the claw portion 51 forms a substantially upright posture when moving downward, so that the bar 51 is moved by the claw portion 51 moving downward. The dust collected on the screen 40 is not pushed down. Therefore, it is possible to eliminate the biting of the dust and to discharge it satisfactorily.
(4) Since the claw portion 51 is inserted into the slit 41 of the bar screen 40 when the scraper 50 moves upward, it is possible to easily capture and discharge the dust collected in the slit 41 or the periphery thereof. .

(5) Since the claw portion 51 is rotated by a hinge type (pivot hinge type) provided with the rotation shaft 53, the configuration is simple, and the manufacture and maintenance are easy.
(6) Since the guide part 80 is provided, the lifting and lowering movement of the scraper 50 can be made smooth, and dust can be captured and discharged more effectively.
(7) The bar screen 40 is provided with the discharge opening 42 and the dust collecting water channel D, and using the water flow F of the water channel C, the dust placed on the claw portion 51 is transferred to the dust collecting water channel D through the discharge opening 42. Since it is discharged, dust can be discharged automatically. Therefore, the dust can be discharged more satisfactorily.

DESCRIPTION OF SYMBOLS 1 Hydraulic drive dust remover 10 Water wheel 11 Shaft 12 Drive plate 20 Interlocking member 30 Power transmission plate 30a 1st edge part 30b 2nd edge part 31 Axis 32 Driven board 40 Bar screen 41 Slit 42 Discharge opening part 50 Drawer 51 Claw part 51a Claw substrate 52 Base part 52a Lower end part 53 Rotating shaft 54 Attachment part 55 Lifting body 56 Roller 60 Pulley 61 First pulley 62 Second pulley 63 Third pulley 70 Wire 71 First wire 72 Second Wire 80 Guide part 90 Coarse screen C Water channel D Dust collection water channel F Water flow G Dust collection part S Water surface

Claims (5)

A water wheel rotating by the water flow in the waterway,
A power transmission plate that is provided on the downstream side of the water wheel, and rotates around an axis extending in the width direction of the water channel via an interlocking member by the rotational force of the water wheel;
A bar screen provided in the water channel on the downstream side of the power transmission plate and receiving dust, and having a plurality of comb-shaped slits;
A scraper provided on the upstream side close to the bar screen so as to freely move up and down, and having a claw portion that enters a slit of the bar screen and mounts dust.
One end is connected to the end of the power transmission plate, and the other end includes a wire connected to the scraper via a pulley located above the scraper,
The hydraulic power characterized in that the power transmission plate is rotated by the rotational force of the water wheel to move the wire and the scraper is moved up and down so that the dust placed on the claw portion can be conveyed upward. Drive dust remover. A water wheel rotating by the water flow in the waterway,
A power transmission plate that is provided on the downstream side of the water wheel, and rotates around an axis extending in the width direction of the water channel via an interlocking member by the rotational force of the water wheel;
A bar screen provided in the water channel on the downstream side of the power transmission plate and receiving dust, and having a plurality of comb-shaped slits;
A scraper provided on the upstream side close to the bar screen so as to freely move up and down, and having a claw portion that enters a slit of the bar screen and mounts dust.
One end is connected to the first end of the power transmission plate, and the other end is connected to the upper portion of the scraper via a first pulley located above the scraper. With the wire,
One end is connected to the second end of the power transmission plate, and the other end is below the scraper, a second pulley located above the scraper, and below the scraper. Comprising a second wire connected via a third pulley located;
The power transmission plate is rotated by the rotational force of the water wheel to move the first wire and the second wire alternately in opposite directions to move the scraper up and down, and the dust placed on the claw portion is moved up and down. A hydraulically driven dust removing device characterized in that it can be conveyed upward.   The dust collecting water channel independent of the water channel is formed in the upper part of the water channel on the downstream side of the bar screen, and the dust placed on the claw portion can be conveyed to the dust collecting water channel. 2. The hydraulically driven dust removing device according to 2.   The claw part is provided in a hinge type, and when the lifting machine moves upward, it is in a protruding state that enters the slit of the bar screen with the weight of the dust to be mounted, and when it moves downward, by the water pressure received from below 4. The hydraulically driven dust removing device according to claim 1, wherein the hydraulically driven dust removing device is in a non-projecting state. 5.   5. The hydraulically driven dust removing device according to claim 1, further comprising a guide portion that guides the lifting and lowering movement of the scraper.