JPH11181747A - Hydraulic turbine device for water-driven dust remover - Google Patents

Abstract

(57) [Summary] [Problem] To prevent the entire width direction of a blade tip from simultaneously entering the water surface by providing the width direction shape of the blade tip of the water wheel at the time of entering the water surface to be non-parallel to the water surface. The object of the present invention is to minimize the sound of hitting the water surface when the blades of the water enter the water surface. SOLUTION: A rake 4 is driven and circulated by the hydraulic power of a water wheel 10 arranged in a waterway 2, and a screen 3 installed in the waterway 2 is provided.
In the hydraulically driven dust remover 1 which rakes up the dust deposited on the rake 4 by the circulating moving rake 4 and discharges the dust upward from the water channel, the widthwise shape of the blade tip 12a of the water wheel 10 when entering the water surface is made non-parallel to the water surface. Provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rake that is driven and circulated by the hydraulic power of a water turbine disposed in a waterway, and the dust that has landed on a screen provided in the waterway is scraped up by the circulating and moving rake and discharged above the waterway. Related to a hydraulically driven dust remover,
In particular, by providing the widthwise shape of the tip of the blade of the turbine at the time of entering the water surface in a non-parallel manner with respect to the water surface, it is possible to minimize the generation of a sound hitting the water surface when the blade of the turbine enters the water surface. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water turbine device for a water-powered dust remover.

[0002]

2. Description of the Related Art Conventionally, as a device for removing dust flowing down a water channel, dust flowing down is received by a grid-like screen installed in the water channel, and the received dust is mechanically scraped up by a rake along the screen. BACKGROUND ART A rake type dust remover that discharges dust to a predetermined position above a water channel is known. This rake type dust remover includes a rake circulation type dust remover in which the rake circulates in one direction.

[0003] In a conventional rake circulation type dust remover, for example, endless chains are disposed diagonally up and down on both left and right sides of a screen installed in a water channel, and each rake is attached to the left and right chains. There is a structure in which both ends are connected, a rake is circulated along a screen by a circulating motion of a chain, and dust that flows to the screen is removed by scraping up the rake that moves upward. These conventional rake circulation type dust removers are provided with a drive sprocket for circulating the chain and a drive mechanism for driving the drive sprocket.

An electric motor is generally used as a driving mechanism for driving a driving sprocket. The electric motor requires a power supply, and when there is no power supply nearby, it is necessary to draw an electric wire or generate electric power. Had to be equipped. In addition, a certain amount of electricity is required to drive the electric motor, and there is a problem that running cost is increased.

Therefore, a water wheel is arranged in a water channel, and the water wheel is rotated by using a water flow flowing through the water channel.
2. Description of the Related Art There is known a hydraulically driven dust remover in which a dust remover is operated without power.

[0006] In the water turbine of this hydraulically driven dust remover, the blade tip width is provided in parallel with the water surface, and its cross-sectional shape is processed into, for example, a curved shape or a bent shape so as to easily receive a fluid force. A plurality of these blades are mounted in the rotation direction.

[0007]

However, as described above, the blade tip width of the water turbine is provided in parallel with the water surface. On the other hand, the entire width of the parallel blade tip hits the water surface at the same time, so that the sound of hitting the water surface is generated, and there is a problem that the surrounding private houses are uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to solve the problems. It is an object of the present invention to change the widthwise shape of the tip of a blade of a water turbine when it enters the water surface. By providing non-parallel to the, to prevent the entire width of the blade tip from rushing into the water surface at the same time, so that the blade tip hits the water surface as a point without hitting the water surface as a whole width, It is an object of the present invention to provide a water turbine device of a water-powered dust remover that can minimize the sound of hitting the water surface when the blades of the water wheel enter the water surface.

[0009]

In order to achieve the above object, a first aspect of the present invention is to drive and circulate a rake by the hydraulic power of a water wheel disposed in a waterway, and to collect garbage deposited on a screen installed in the waterway. In a hydraulically driven dust remover, which rakes up the water with a rake that circulates and discharges the water above the water channel, the device comprises means for providing the widthwise shape of the tip of the blade of the water turbine when it enters the water surface in a non-parallel manner to the water surface.

[0010] Here, the widthwise shape of each blade tip that is not parallel to the water surface may be formed in a shape having a constant linear gradient with respect to the water surface. It is preferred that the mounting is performed so that the gradient in the width direction is alternately opposite. In addition, the shape in the width direction of each blade tip that is not parallel to the water surface has a gentle V-shaped
Each blade of the water turbine may have a shape in which the tip of the blade is higher at the center in the width direction, and the tip of the blade is higher at the position closer to the left and right than the center of the width in the width direction. The shapes may be alternately combined. Furthermore, the width direction shape of each blade tip that is non-parallel to the water surface may be formed in a sawtooth shape, and each blade of the water wheel has a sawtooth-shaped peak and valley in the width direction of the blade tip alternately in the opposite direction. It is good to be attached so that it becomes.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings. Here, FIG. 1 is an overall side sectional view, FIG. 2 (A) is a front view of a water turbine, FIG. 2 (B) is a sectional view taken along line AA of FIG. 2 (A), FIG.
3C is a front view of the impeller of the water turbine, FIG. 3A is a front view of the water turbine, FIG. 3B is a cross-sectional view taken along the line BB of FIG. 3A, and FIG. FIG. 5 is a front view of the impeller of the water turbine.

Referring to FIG. 1, a hydraulically driven dust remover 1 is a device for driving and circulating a rake 4 with the hydraulic power of a water wheel 10 to scrape up dust that has landed on the screen 3 with a rake 4 that circulates and discharges the dust to an upper part of a water channel. , Installed in the middle of the waterway 2.

The hydraulically driven dust remover 1 has left and right sides formed of a pair of frames 1a. Each of the left and right frames 1a is slightly inclined toward the downstream side with its upper side inside the left and right side walls of the water channel 2. Installed. Left and right frames 1
The lower end of a is fixed to the channel bottom 2a, and the upper side of the frame 1a protrudes above the channel 2 and curves downstream.

Between the pair of left and right frames 1a, 1a of the hydraulically driven dust remover 1, there is provided a vertical lattice screen 3 for receiving the garbage to be deposited. The screen 3 is installed in the water channel 2 to prevent dust from flowing in and damaging a drainage pumping station and the like, and has a shape with a small head loss.

The rear surface of the screen 3 is fixed to and held by several screen receiving rods vertically extending between the left and right frames 1a, 1a of the water channel 2. The upper end of the screen 3 extends straight up to the upper part of the water channel 2 with a slight inclination toward the downstream side. The lower end side of the screen 3 has a predetermined distance from the water channel bottom surface 2a for passage of a rake 4 that scrapes up the dust that has flowed to the screen 3.

An auxiliary screen 5 is installed close to the water channel bottom surface 2a on the downstream side of the lower end of the screen 3.
The auxiliary screen 5 is provided on the water channel bottom surface 2a in order to prevent dust from flowing down from a gap between the lower end side of the screen 3 and the water channel bottom surface 2a, and has a comb-like shape with a small head loss.

The guide plate 1b is connected to the upper end of the screen 3 and extends in a straight line, and is formed so as to be curved downstream along the frame 1a. The guide plate 1b is connected to the frames 1a and 1a on both sides of the water channel. The guide plate is supported by a horizontal guide plate receiving rod. The guide plate 1b removes dust from the upper end of the screen 3 to the waterway 2.
To the management bridge and garbage storage site 6 disposed at a predetermined position above the vehicle.

A drive shaft 7 is mounted on the frames 1a, 1a on both sides at the position of the curved portion of the guide plate 1b. Drive sprockets 8 are fixed to both ends of the drive shaft 7 adjacent to the two frames 1a, 1a, respectively. An endless main chain 9 driven by the driving sprocket 8 and circulating is wound around each of the driving sprockets 8.

The rake 4 is suspended between the main chains 9 on both sides, and the rake 4 is circulated along the screen 3 and the guide plate 1b in conjunction with the circulation of the main chain 9. It has become. The rake 4 that moves toward the upper side of the screen 3 scrapes up the dust that has landed on the screen 3 and discharges it to the above-mentioned management bridge and dust storage area 6.

The water turbine 10 is connected to the water channel 2 downstream of the screen 3.
Is held on the water surface. The water wheel 10 drives the drive sprocket 8 by the hydraulic force to give a driving force for circulating the rake 4. The water wheel 10 has a pair of circular plates 1
It has a structure in which a plurality of blades 12 are radially arranged between 1, 1.

Each of the plurality of blades 12 is provided such that the widthwise shape of the blade tip 12a at the time of entry into the water surface is non-parallel to the water surface. This is to prevent the entire blade 12a from simultaneously hitting the water surface and hitting the water surface when each of the rotating blades 12 enters the water surface.

That is, since the width direction shape of the blade tip 12a at the time of entering the water surface is not parallel to the water surface, the entire blade in the width direction does not simultaneously enter the water surface, and the blade tip 12a entering the water surface gradually enters the water surface. You will rush. That is, the blade tip 12a at the time of entering the water surface does not hit the water surface in a so-called linear state, but gradually hits the point state.

Each of the rotating blades 12a is prevented by simultaneously preventing the entire width direction of the blade tip 12a from entering the water surface and simultaneously preventing the entire surface of the blade tip 12a from hitting the water surface when entering the water surface. The sound of hitting the water surface when entering the water surface is minimized.

The shape in the width direction of each blade tip 12a that is not parallel to the water surface is, for example, a shape having a constant linear gradient with respect to the water surface in FIG.
Therefore, one end (left end or right end) in the width direction of the blade tip 12a of the rotating blade 12 first enters the water surface and gradually enters the other end (right end or left end). This prevents the entire width direction from simultaneously rushing into the water surface.

Further, each blade 12 attached to the water turbine 10
Are mounted such that the gradient in the width direction of the blade tip 12a is alternately opposite. That is, when the right end in the width direction of the tip 12a of a certain blade 12 first enters the water surface, the front and rear blades 12 first enter the water surface at the left end in the width direction of the tip 12a. ing.

As shown in FIG. 2A, a trapezoidal blade plate having a gradient in the width direction at the tip side and a horizontal width at the base end side is used for the blade 12 having the blade tip 12a having a gradient in the width direction. However, as shown in FIG. 2 (C), a parallelogram-shaped blade having a gradient in the width direction in which the distal end side and the proximal end side have the same direction may be used.

For example, in the example shown in FIG. 3, the widthwise shape of each blade tip 12a that is not parallel to the water surface is formed in a gentle V-shape of a mountain shape that becomes higher at the center of the width. For this reason, the blade tip 12a of the rotating blade 12 is
The center in the width direction first enters the water surface and gradually enters both ends in the left-right width direction, thereby preventing the entire width direction from simultaneously entering the water surface.

Further, for example, the blade 1 of the water turbine 10 shown in FIG.
3, the shape in which the blade tip 12a in FIG. 3 is higher at the width center in the width direction and the shape in which the blade tip 12a is higher at the left and right positions than the width center in the width direction are alternately combined and attached. Have been.

Further, for example, the blade 1 of the water turbine 10 shown in FIG.
In 2, the widthwise shape of the blade tip 12a is formed in a bilaterally symmetric sawtooth shape. Moreover, the blades 12 mounted on the water wheel 10 are mounted such that the sawtooth-shaped peaks and valleys in the width direction of the blade tip 12a are alternately opposite in direction. This prevents the entire width of the blade tip 12a from simultaneously entering the water surface.

The water wheel 10 has both sides of a water wheel axle 10a rotatably supported by tips of a pair of holding rods 13. The base end of the holding rod 13 is attached to a predetermined position of the frame 1a so as to be vertically rotatable.

Floats 14 are provided on both sides of the water wheel 10. The float 14 keeps the water wheel 10 on the water surface while moving up and down following the fluctuation of the water level, and has a function of keeping the water wheel 10 rotating by the water flow flowing through the water channel 2.

The power transmission mechanism 15 transmits the rotational force of the water wheel 10 to the drive sprocket 8.
Is composed of, for example, a belt transmission mechanism. The power transmission mechanism 15 composed of a belt transmission mechanism is, for example, an endless chain 15a as a belt,
For example, it is composed of drive chain sprockets 15b, 15d, 15f, driven chain sprockets 15c, 15e, 15g, and a speed reducer (not shown).

Of these, the drive chain sprocket 15
b is a water wheel axle 1 protruding from the side of the circular plate 11 of the water wheel 10
The water turbine 10 is fixedly attached to the tip of the water wheel 10a, and rotates together with the rotation of the water turbine 10. Driven chain sprocket 15c
Is attached to the side of the holding rod 13 on the center of rotation of the base end of the holding rod 13. An endless chain 15a is stretched between the driving chain sprocket 15b and the driven chain sprocket 15c.

The driven chain sprocket 15c is attached to the side of the mounting position of the driven chain sprocket 15c.
drive chain sprocket 15d that rotates integrally with c
Are linked together. Driven chain sprocket 15
"e" is linked to a speed reducer (not shown), and an endless chain 15a is stretched between the driving chain sprocket 15d and the driven chain sprocket 15e.

Further, a drive chain sprocket 15f is interlockedly connected to the reduction shaft side of the unillustrated reduction gear, and a driven chain sprocket 15g is interlockedly connected to the side of the drive sprocket 8 via a clutch not shown.
An endless chain 15a is stretched between the drive chain sprocket 15f and the driven chain sprocket 15g. The clutch functions to release or connect the interlocking connection between the drive sprocket 8 and the water wheel 10.

Next, the operation based on the configuration of the embodiment of the present invention will be described below. The water flow near the water surface that has passed through the screen 3 of the water-powered dust remover 1 installed in the waterway 2 hits the lower blade 12 of the waterwheel 10 arranged in the waterway 2 downstream of the screen 3, causing the waterwheel 10 to rotate. The force to act acts.

In this case, as shown in FIG. 2, the blade tip 12a of the blade 12 of the water turbine 10 has a linear gradient from one end to the other in the width direction of the blade tip 12a. When alternately reversed, for example, the left end in the width direction of the blade tip 12a protruding toward the water surface first enters the water surface, and gradually enters the water surface gradually toward the right end side in the width direction. .

As described above, since the blade tip 12a gradually enters the water surface gradually from the left end or the right end side in the width direction, the entire blade tip 12a in the width direction can be prevented from simultaneously entering the water surface. When the rotating blades 12 enter the water surface, it is possible to minimize the generation of the sound of hitting the water surface.

In addition, the rotating blades 12 are arranged such that the left and right ends in the width direction of the blade tips 12a alternately rush into the water surface first, so that the fluid force acting on the rotating blades 12 from the water surface is biased. Thus, it is possible to prevent the water turbine 10 from being subjected to an unreasonable eccentric force and causing a failure or the like.

Further, when one end in the width direction of the blade tip 12a enters the water surface, water is pushed out to the other end to raise the water surface at the other end in the width direction of the blade tip 12a. The water surface part that has become the next rotating blade tip 12
Since it is located at the position of the other end side where a protrudes, the next blade 12 can catch water well and can also increase the efficiency of obtaining fluid energy.

As shown in FIG. 3, the widthwise shape of each blade tip 12a that is non-parallel to the water surface is formed in a gentle V-shaped shape of a mountain that becomes higher at the center of the width. ,
The blade tip 12a of the rotating blade 12 is designed such that the center in the width direction first enters the water surface, and gradually enters both ends in the left-right width direction, and the entire width direction simultaneously enters the water surface. Can be prevented, and the sound of hitting the water surface when each rotating blade 12 enters the water surface can be reduced as much as possible.

As shown in FIG. 4, the blade tip 12a
For example, when the shape in which the shape in which the height of the blade tip 12a is higher at the center in the width direction and the shape in which the blade tip 12a is higher in the position closer to the left and right than the width center in the width direction is alternately combined, for example, The center in the width direction of the blade tip 12a of the blade 12 to be inserted first enters the water surface, and gradually enters both ends in the left-right width direction.

Next, in the rotating blade 12, the position of the blade tip 12a on the left side in the width direction first enters the water surface, and gradually enters both ends in the left-right width direction. Furthermore, in the blade 12 rotating next, the position on the right side in the width direction of the blade tip 12a first enters the water surface and gradually enters both ends in the left-right width direction.

As described above, the blade tip 12a gradually enters the water surface gradually from the center position in the width direction, the leftward position or the rightward position, and the entire widthwise direction of the blade tip 12a simultaneously enters the water surface. Since it can be prevented, the sound of hitting the water surface when each rotating blade 12 enters the water surface can be reduced as much as possible.

Further, the rotating blade 12 is mounted on the tip 1 of the blade.
By making the position that first enters the water surface alternately in the order of the center in the width direction of 2a, the left side, and the right side,
It is possible to prevent the fluid force acting on the rotating blades 12 from acting on the water surface from being biased, and to avoid causing an eccentric force acting on the water turbine 10 to cause a failure or the like.

As shown in FIG. 5, the blade tip 12a
When the width direction of the blade tip 12a is formed in a sawtooth shape, the blade tip 12a gradually enters the water surface gradually from the position of the sawtooth-shaped peak in the width direction, and the entire width direction of the blade tip 12a simultaneously becomes the water surface. Can be prevented, so that the sound of hitting the water surface when each rotating blade 12 enters the water surface can be reduced as much as possible.

Further, when each blade 12 of the water wheel 10 is mounted so that the sawtooth-shaped peaks and valleys in the width direction of the blade tip 12a are alternately opposite, the width of the blade tip 12a is reduced. When the serrated peak enters the water surface, water is pushed out on both sides to raise the water surface on both sides of the serrated peak (that is, the serrated valley). Since the portion is located at the position of the sawtooth-shaped peak of the next rotating blade tip 12a, the next blade 12 can catch water well, and the efficiency of obtaining fluid energy can be increased.

When the water turbine 10 rotates, the power transmission mechanism 15
Works to rotate the drive chain sprocket 15b of the power transmission mechanism 15 interlockingly connected to the side of the water turbine 10. With the rotation of the drive chain sprocket 15b, the endless chain 15a meshing with the drive chain sprocket 15b circulates, and the driven chain sprocket 1
5c is rotated.

The drive chain sprocket 15d also rotates in conjunction with the rotation of the driven chain sprocket 15c, and the driven chain sprocket 1d is driven via the endless chain 15a.
5e also rotates. Then, the rotation speed is reduced by a speed reducer (not shown), the drive chain sprocket 15f is rotated at a reduced speed, and the driven chain sprocket 15g interlocked with the drive sprocket 8 via the endless chain 15a via a clutch (not shown) is rotated.

When the clutch is engaged, the driving sprocket 8 and the driven chain sprocket 15g are interlockingly connected, so that the rotation of the driving chain sprocket 15g causes the driving shaft 7 on which the driving sprocket 8 is fixed to be integrated. And the other drive sprocket 8 fixed to the other end of the drive shaft 7 is integrally rotated in the same direction.

As the left and right drive sprockets 8 rotate together, the left and right main chains 9 meshing with the respective drive sprockets 8 circulate at the same speed and in the same direction in the same direction. That is, the main chain 9 on the downstream side of the screen 3 moves down, and the main chain 9 on the upstream side of the screen 3 moves downward.
Moves up.

A rake 4 is suspended between the circulating main chains 9, and the rake 4 circulates in the same direction as the main chain 9 circulates in conjunction with the circulating motion of the main chain 9. I do. That is, rake 4 is screen 3
, Moves upward along the upstream surface of the screen 3 via the lower end of the screen 3, and further moves upward along the guide plate 1 b provided on the upper portion of the screen 3.

Then, the dust which has drifted to the upstream side of the screen 3 is scraped up by the rake 4 moving upward. The dust raked up by the rake 4 passes through the screen 3 and the guide plate 1b, and is discharged to the management bridge / dust storage 6 disposed above the waterway. The rake 4 that has discharged the garbage to the management bridge and garbage storage 6 descends, scrapes the garbage again through the lower end of the screen 3, and repeats the same operation.

The present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0055]

As is apparent from the above description, according to the water turbine apparatus of the hydraulically driven dust remover according to the first aspect of the present invention,
The rake is driven and circulated by the hydraulic power of the water wheel placed in the waterway,
In a hydraulically driven dust remover that rakes up dust that has landed on a screen installed in a waterway with a circulating moving rake and discharges it above the waterway, the width direction of the blade tip of the turbine when the water enters the water surface is not parallel to the water surface. To prevent the entire width of the tip of the blade from simultaneously rushing into the water surface, so that the tip of the blade hits the water surface as a point without hitting the water surface as a whole width, and each of the rotating blades It is possible to minimize the generation of a sound hitting the water surface when the water enters the water surface.

In the case where the widthwise shape of each blade tip that is non-parallel to the water surface is formed to have a constant linear gradient with respect to the water surface, the blades From the one end in the width direction of the tip, it gradually enters the water surface sequentially, preventing the entire width of the blade tip from entering the water surface at the same time, and the sound of tapping the water surface when each rotating blade enters the water surface Generation can be reduced as much as possible.

Further, when the blades of the water turbine are mounted such that the gradients in the width direction of the blade tips of the respective blades are alternately opposite to each other, the rotating blades have a width corresponding to the width of the blade tips. One end and the other end of the direction alternately plunge into the water surface alternately, so that the fluid force acting from the water surface on the rotating blades can be prevented from being biased. Can be avoided. further,
When one end in the width direction of the blade tip enters the water surface, water is pushed out to the other end to raise the water surface at the other end in the width direction of the blade tip. Since it is located at the position of the other end protruding from the tip of the rotating blade, the next blade can catch water well, and the efficiency of obtaining fluid energy can be increased.

In the case where the widthwise shape of each blade tip that is non-parallel to the water surface is formed in a gentle V-shape with a height increasing at the center of the width, At the center of the rotating blades, the center in the width direction first enters the water surface, and gradually enters both ends in the left and right width direction, so that the entire width direction can be prevented from simultaneously entering the water surface. In addition, when the rotating blades enter the water surface, it is possible to minimize the generation of the sound of hitting the water surface.

Further, each of the blades of the water turbine has a shape in which the tip of the blade is higher at the center of the width in the width direction, and the height of the tip of the blade is higher at the left and right positions than the center of the width in the width direction. When the blades are mounted in combination with each other alternately, they gradually enter the water surface sequentially from the center position in the width direction of the blade tip, the position closer to the left side or the position closer to the right side, so that the width direction of the blade tip It is possible to prevent the whole from rushing into the water surface at the same time, and it is possible to minimize the generation of a sound hitting the water surface when each of the rotating blades rushes into the water surface.

Further, in the case where the widthwise shape of each blade tip non-parallel to the water surface is formed in a sawtooth shape, the position of the sawtooth-shaped peak in the widthwise direction of the blade tip is set. From the water surface gradually, so that the entire width direction of the blade tip can be prevented from rushing into the water surface at the same time, and the sound of hitting the water surface when each rotating blade enters the water surface is reduced as much as possible. be able to.

Further, when each blade of the water turbine is mounted such that the sawtooth-shaped peaks and valleys in the width direction of the blade tip are alternately opposite to each other, the tip of the water turbine may be provided. When the serrated peak in the width direction enters the water surface, water is pushed out to both sides to raise the water surface on both sides of the serrated peak (that is, the serrated valley). Because the water surface part is located at the position of the serrated peak at the tip of the next rotating blade, the next blade can catch water well and increase the efficiency of obtaining fluid energy .

[Brief description of the drawings]

FIG. 1 is an overall side sectional view showing an embodiment of the present invention.

FIG. 2 (A) is a front view of a water turbine showing an embodiment of the present invention. FIG. 2B is a cross-sectional view taken along the line AA of FIG. (C) is a front view of the blade plate of the water turbine showing the embodiment of the present invention.

FIG. 3 (A) is a front view of a water wheel showing another embodiment of the present invention. FIG. 3B is a cross-sectional view taken along line BB of FIG.

FIG. 4 is a front view of a blade of a water turbine showing another embodiment of the present invention.

FIG. 5 is a front view of a blade of a water turbine showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic drive type dust remover 1a Frame 1b Guide plate 2 Waterway 2a Waterway bottom 3 Screen 4 Rake 5 Auxiliary screen 6 Management bridge and garbage storage 7 Drive shaft 8 Drive sprocket 9 Main chain 10 Water wheel 10a Water wheel shaft 11 Round plate 12 Blade 12a Blade tip 13 Holding rod 14 Float 15 Power transmission mechanism 15a Endless chain 15b Driving chain sprocket 15c Driving chain sprocket 15d Driving chain sprocket 15e Driving chain sprocket 15f Driving chain sprocket 15g Driving chain sprocket

Claims (7)

[Claims] 1. A hydraulically driven dust remover in which a rake is driven and circulated by the hydraulic power of a water turbine disposed in a waterway, and dust scattered on a screen provided in the waterway is scraped up by the circulating rake and discharged above the waterway. A water turbine device for a hydraulically driven dust remover, wherein the width direction shape of the blade tip of the water turbine at the time of entering the water surface is provided non-parallel to the water surface. 2. The hydraulically driven dust remover according to claim 1, wherein the widthwise shape of each blade tip non-parallel to the water surface is formed to have a constant linear gradient with respect to the water surface. Water turbine equipment. 3. The water turbine device for a hydraulically driven dust remover according to claim 1, wherein each blade of the water turbine is mounted such that the gradient in the width direction of the blade tip is alternately opposite. 4. The hydraulically driven dust remover according to claim 1, wherein the widthwise shape of each blade tip non-parallel to the water surface is formed in a gentle V-shape of a mountain shape that becomes higher at the center of the width. Water turbine equipment. 5. Each of the blades of the water wheel alternately has a shape in which the tip of the blade is higher at the width center in the width direction, and a shape in which the tip of the blade is higher at the left and right positions than the width center in the width direction. The water turbine device of the hydraulically driven dust remover according to claim 1, which is mounted in combination. 6. The water turbine apparatus for a water-powered dust remover according to claim 1, wherein the widthwise shape of each blade tip non-parallel to the water surface is formed in a sawtooth shape. 7. The water turbine device for a hydraulically driven dust remover according to claim 1, wherein each blade of the water turbine is mounted such that saw-toothed peaks and valleys in the width direction of the blade tip are alternately opposite to each other.