JPH0819659B2 - Dust remover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a dust remover installed in an irrigation canal, a river, or the like.

[Prior Art] Conventionally, for example, a net screen type dust remover such as Japanese Utility Model Publication No. 59-34583 is known as a dust remover for removing dust such as irrigation canals and rivers. This dust remover is shown in FIG. Thus, the drive sprocket 2 is provided on the water surface via the rotary shaft 1, and the driven sprocket 4 is provided in the water channel A via the rotary shaft 3. Further, a net screen 5 is arranged via a chain (not shown) suspended between these sprockets 2 and 4, and the net screen 5 is rotated by a motor 6 connected to the drive sprocket 2 so that water on the upstream side can be rotated. Water is discharged to the downstream side while blocking the passage of dust and the like, and dust, mud, etc. captured by the net screen 5 are dropped on the receiving portion 7 and removed.

In the above conventional technique, the upper and lower sprockets 2, 4
Suspending the net screen 5 via the chain to the waterway A
Since the dust inside is captured, the driven sprocket 4 on the downstream side is always buried in water. Therefore, the driven sprocket 4, the rotary shaft 3, and the bearings that support the rotary shaft 3 are submerged in water. There was a problem that it was easily corroded on contact and was inferior in durability. Further, since the net screen 5 is structured to be rotated by the chain, the chain suspended between the sprockets 2 and 4 and the guide members of the chain are worn, and if the wear is severe, it is necessary to replace these chains. In addition, since this chain also comes into contact with water by the rotation of the net screen 5, there is a problem that rust is likely to occur.

Therefore, in Japanese Utility Model Laid-Open No. 49-86484, a cylindrical filtering screen rotatably mounted in the liquid supply flow passage so that its axis crosses the liquid supply flow passage intersects the liquid supply flow passage at a substantially right angle. And a filtrate discharge passage communicating with the inside of the cylindrical filtration screen, a drive device for rotating the filtration screen, and a nozzle device for spraying a liquid jet on the peripheral surface of the filtration screen at the downstream side of the liquid supply passage. A filter device provided with this filter device is proposed. In this filter device, since a drive device and a drive mechanism for driving the filtration screen can be provided on the flow path, rust is unlikely to occur in the above-mentioned chain and the durability of the device is improved. be able to.

[Problems to be Solved by the Invention] In the above filtering device, although the filtering screen is driven to rotate, since water filters the dust when filtering the screen, the dust cannot be efficiently captured, The nozzle device that blows away the dust is a large number of nozzles mounted side by side on a pipe, and the force with which the liquid jet strikes varies depending on the nozzle mounting position. However, there is a problem that the liquid jet cannot be uniformly applied to the liquid jet, the attached dust is partially left, and the dust and the like clinging to the screen cannot be blown off. Further, since the pipe for supplying water to the nozzle is inserted into the side surface near the outer periphery of the filtration screen and connected to the nozzle in the filtration screen, the cylindrical filtration screen rotates at the insertion position of the pipe. There is a problem in that the strength of the filter screen itself is reduced because it must be fully opened so as not to get in the way.

Therefore, the present invention provides a dust remover capable of reducing consumable parts such as chains, excellent in durability, capable of efficiently capturing dust and the like, and capable of effectively blowing the captured dust and the like. The purpose is to do.

[Means for Solving the Problem] A dust remover according to claim 1 of the present invention comprises a substantially cylindrical frame body having a width substantially equal to the width of a water channel, and a screen provided on the outer periphery of the frame body. A dust remover main body is formed, and a rake in the width direction of the water channel protruding from the outer periphery is attached to the dust remover main body, a shaft portion is provided at the center of the dust remover main body, and the shaft portion is provided on the water passage. The dust remover main body is rotatably supported on the screen, and an injection pipe for injecting water onto the screen is provided in the dust remover main body.
The injection pipe is provided with slit-shaped injection holes that are continuous along the length direction of the rake.

Further, in the dust remover of claim 2 of the present invention, the shaft portion is formed hollow, and the water supply main pipe is loosely inserted into the hollow shaft portion and disposed at the center of the dust remover main body. The water supply main is connected to the injection pipe.

[Operation] In the structure of claim 1, the shaft portion of the dust remover main body and the shaft portion are pivotally supported by rotatably providing the substantially cylindrical dust remover main body on the bearing provided on the water channel. The bearing is provided on a water channel that does not come into contact with water. Further, not only can dust be captured from the water passing through the screen, but it can also be captured by the rake that projects from the outer periphery of the dust remover body and rotates together with the dust remover body. Further, since the jet holes are formed in a continuous slit shape along the length of the rake, the jet water is uniformly jetted from the jet holes, and the dust adhering to the screen and the rake can be blown away without leaving.

Further, in the configuration of the above-mentioned claim 2, since the water supply main can be connected to the injection pipe inside the dust remover main body without opening the side surface of the dust remover main body, the water supply main is located at the center of the dust remover main body. It is possible to stably rotate the dust remover body without interfering with the rotation of the dust remover body.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 6 show a first embodiment of the present invention, in which a dust remover main body 11 has a disk portion 12 and an outer peripheral member 13 provided on both sides.
And a radial support rod 14 are connected to each other, and a plurality of lateral members 15 are horizontally provided between the outer peripheral members 13 on both sides to form a substantially cylindrical frame body 16, and a screen is provided on the outer periphery of the frame body 16. 17 is stretched and a rake 18 in the width direction of the water channel A is attached to the lateral member 15, and the frame body 16 has a width substantially equal to the width of the water channel A as shown in FIGS. . Further, as shown in FIG. 5, a substantially pipe-shaped hollow shaft portion 20 having a through hole 19 is provided at the center of the disc portion 12,
The hollow shaft portion 20 is pivotally supported by a bearing 22 provided on a side wall 21 of the water passage A in the flow direction B, and the dust remover main body 11 is rotatably provided. A driven sprocket 23 is provided on the hollow shaft portion 20 on one side, and the driven sprocket 23 is connected to a motor 25 with a reducer via a chain 24.

A water supply main pipe 26 is disposed in the center of the dust remover main body 11 by being loosely inserted into the pair of through holes 19, and the water supply main pipe 26 contacts the through hole 19 when the dust remover main body 11 is rotated. It is arranged not to. Further, a pair of U-shaped injection pipes 27 in the dust remover main body 11 are connected to the water supply main pipe 26. These injection pipes 27 are tilted slightly upward with respect to the horizontal, and are provided with slit-shaped injection holes 28 facing the inner surface of the screen 17 and continuous along the length direction of the rake 18. There is. Further, water supply pipes 29 and 30 are connected to both ends of the water supply main pipe 26, and these water supply pipes 29 and 30 are connected via a branch portion 31 to a discharge side 32A of one motor-equipped pump 32.
It is connected to the. A suction pipe 33 is connected to the suction side 32B of the pump 32, and the tip of the suction pipe 33 is arranged in the water channel A.

On the side wall 21 in the water channel A, substantially box-shaped receiving portions 34 are installed on both sides with the dust remover main body 11 interposed therebetween.
34 has an opening 35 facing the injection hole 28. Further, a substantially gutter-shaped trough portion 36 is connected to one side of the receiving portion 34, and a tip end of the trough portion 36 is disposed on a receptacle 37. A draining screen 38 made of punching metal or the like is arranged on the upper portion of the receptacle 37, and a discharge pipe 39 is connected to a side portion thereof, and a tip end of the discharge pipe 39 is arranged on the water channel A side. .

The rake is provided in the water channel A at the lower front of the dust remover main body 11.
A curved guide portion 40 corresponding to the tip position of 18 is provided,
Further, a pair of guide plates 41 for guiding the water in the water passage A to the dust remover main body 11 is provided in the water passage A in front of the dust remover main body 11.

Next, the dust removing action in the water channel by the dust remover having the above configuration will be described.

When the rotation of the motor 25 is transmitted to the driven sprocket 23 via the chain 24, the dust remover main body 11 integrated with the hollow shaft portion 20 pivotally supported by the bearing 22 provided on the water passage A is in the scraping direction C.
The dust and dirt in the water channel A are captured by the screen 17 and the rake 18. Further, when the water in the water channel A is sucked up by the pump 32 and pressure-fed to the water supply main pipe 26 through the water supply pipes 29 and 30, the jet water is jetted from the jet hole 28 of the jet pipe 27, and the screen 17 The dust, mud and the like captured by the rake 18 are blown off to the receiving portion 34, further transmitted through the trough portion 36 and discharged to the porch 37, and the drainage screen 38 separates the dust and mud.

Thus, in this embodiment, the bearing 22 provided on the water channel A is
Since the dust remover main body 11 provided with the screen 17 on the outer periphery of the substantially cylindrical frame body 16 is rotatably provided, the bearing 2
2. Since the hollow shaft portion 20 of the spindle remover main body 11 is always located in the air, it is possible to prevent rust and the like from being generated and to have excellent durability as compared with the conventional one that is in contact with water. Moreover, since the dust remover main body 11 is pivotally supported by the hollow shaft portion 20 provided at the center of the substantially cylindrical dust remover main body 11, the structure is simple as compared with the conventional one having two upper and lower shaft portions. The size of the dust remover can be reduced, and a conventional chain for rotating the net screen and a guide member for the chain are not required, so that the weight of the dust remover can be reduced. Also, the framework body 16
Since a dust remover main body 11 having a screen 17 is formed on the outer circumference of the dust remover main body 11 and a rake 18 in the width direction of the water passage A protruding from the outer circumference is attached to the dust remover main body 11, rotation of the dust remover main body 11 causes the inside of the water passage A to move. Dust, mud, etc. can be captured by the screen 17, and dust, mud, etc. can be efficiently captured by the rake 18 protruding from the outer circumference of the dust remover main body 11 as the dust remover main body 11 rotates.

Further, in the injection pipe 27 arranged in the dust remover main body 11, a slit-shaped injection hole 28 facing the screen 17 and having a horizontal length of substantially the same width as the screen 17 and continuous in the length direction of the rake 18 is formed. Therefore, the water jetted uniformly from the jet holes 28 can blow off the dust adhered to the screen 17 and the rake 18 uniformly without leaving.
Further, since the injection holes 28 are provided on the upstream side and the downstream side of the water passage A, respectively, it is possible to reliably remove dusts from the screen 17 and the rake 18 by the injection water ejected from these two places.

Furthermore, a hollow shaft portion 20 is provided at the center of the dust remover main body 11, the hollow shaft portion 20 is rotatably supported by a bearing 22, and the remover shaft main body 11 is rotatably provided. It is loosely inserted into 20 and disposed at the center of the dust remover main body 11, and the water supply main 26 in this dust remover main body 11 is connected to the injection pipe 27. It does not interfere with the rotation, and the dust remover main body 11 can be stably rotated and driven.
The water supplied from 26 can be sprayed from the inner surface side to the screen 17 and the rake 18 provided on the outer periphery of the dust remover main body 11 to blow away dust adhering to them.

FIG. 7 shows a second embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In this example, the water supply pipe 29 connected to the discharge side 32A of the pump 32 is directly connected to the water supply main pipe 26 on the driven sprocket 23 side, and branched to the other side of the water supply main pipe 26 via the branch portion 42. The branch pipes 43, 44 are connected, and the tips of the branch pipes 43, 44 are arranged in the receiving portions 34, 34 on both sides, respectively.

Then, the water pumped from the pump 32 is jetted from the jet hole 28 via the water pipe 29, blows the dust attached to the screen 17 and the rake 18 to the receiving portion 34, and reaches the branch portion 42 without being jetted. The generated water flows into the receiving parts 34, 34 from the branch pipes 43, 44 and sends the water containing the wastes in the receiving parts 34, 34 onto the draining screen 38.

As described above, also in the present embodiment, the dust remover 11 in which the screen 17 is provided on the outer periphery of the frame body 16 formed in a substantially cylindrical shape.
A hollow shaft portion 20 is provided at the center of the shaft, and a dust remover main body 11 is rotatably provided on a bearing 22 provided on the water passage A through the hollow shaft portion 20, and a jet pipe 27 for jetting water onto a screen 17 is removed. Machine body
Since the injection pipe 27 is provided with the horizontally elongated slit injection holes 28, the durability of the dust remover can be improved and the number of parts such as chains can be reduced. Screen 17 and rake 18
It is possible to reliably remove dust and the like adhering to, and it has the same operation and effect as the first embodiment.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, an opening / closing valve may be provided between the branch portion 42 and the water supply main pipe 26 shown in the second embodiment, and the opening / closing valve may be opened only when necessary to allow water to flow to the receiving portions 34, 34. Alternatively, an opening / closing valve may be provided in each of the branch pipes 43 and 44. Also,
The size, shape, dimensions, etc. of the dust remover main body may be appropriately selected. For example, the dust remover main body may have a polygonal shape.

[Advantage of the Invention] The dust remover according to claim 1 of the present invention is a dust remover main body in which a substantially cylindrical frame body having a width substantially equal to a water channel width is formed and a screen is provided on the outer periphery of the frame body. The dust collector main body is provided with a rake in the width direction of the water channel protruding from the outer periphery, a shaft portion is provided at the center of the dust collector main body, and the shaft portion is axially supported by a bearing provided on the water channel. The dust remover main body is rotatably provided, and an injection pipe for injecting water onto the screen is provided in the dust remover main body,
The injection pipe has slit-shaped injection holes that are continuous along the length of the rake, and consumable parts such as chains can be reduced, durability is excellent, and dust can be captured efficiently. It is possible to provide a dust remover that can remove the dust and the like effectively.

Further, in the dust remover of claim 2 of the present invention, the shaft portion is formed hollow, and the water supply main pipe is loosely inserted into the hollow shaft portion and disposed at the center of the dust remover main body. By connecting the injection pipe to the main water supply pipe, the dust remover main body can be stably driven to rotate, the number of consumable parts such as chains can be reduced, the durability is excellent, and dust can be efficiently collected. It is possible to provide a dust remover that can be captured and that can effectively blow away the captured dust and the like.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view, FIG. 2 is a partially cutaway plan view, and FIG. 3 is a partially cutaway perspective view. The figure is a front view, FIG. 5 is an enlarged cross-sectional view of an essential part, FIG. 6 is an enlarged perspective view of an essential part with a part cut away, and FIG.
FIG. 8 is a partially cutaway plan view showing a second embodiment of the present invention,
The figure is a schematic explanatory view showing a conventional example. 11 …… Dust remover main body 16 …… Framework 17 …… Screen 18 …… Rake 20 …… Hollow shaft 22 …… Bearing 26 …… Water supply main 27 …… Injection pipe 28 …… Injection hole A …… Water channel

Claims (2)

[Claims] Claim: What is claimed is: 1. A substantially cylindrical frame body having a width substantially equal to the width of a water channel is formed, and a dust remover main body having a screen provided on the outer periphery of the frame body is formed. Mounting a rake in the width direction of the water channel protruding from the shaft, providing a shaft at the center of the dust remover main body, and rotatably providing the dust remover main body by pivotally supporting this shaft portion on a bearing provided on the water passage. An injection pipe for injecting water onto the screen is provided in the dust remover main body, and a slit-shaped injection hole is formed in the injection pipe along the length direction of the rake. Dust remover. 2. The shaft part is formed hollow, the water main pipe is loosely inserted into the hollow shaft part and disposed at the center of the dust remover main body, and the water supply main pipe in the dust remover main body is provided with the injection pipe. The dust remover according to claim 1, further comprising: