JP2018131830A - Method for installing dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for installing a dust collector suitable for use in a water channel that can be strongly influenced by waves.SOLUTION: A frame extension part extending from the end of a screen frame to a wall surface is provided with a jack mechanism capable of adjusting the distance to a support part and is inserted in a vertical groove part with an U-shaped cross section formed in a wall surface of a water channel. Two wall surfaces of opposing vertical groove parts are used as support faces and jack mechanisms that are adjacent to each other in the vertical lengthwise direction are alternately arranged in directions different from each other, so as to be supported before and after the extended direction of the water channel. Therefore, because the screen frame can be fixed surely before and after the direction of water flow, this can reduce the possibility that a screen is damaged by being rocked with waves even if the screen frame is installed in a water channel that can be strongly influenced by waves.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rotary screen type dust removing device that collects dust from flowing water flowing through a water channel.

  Dust floating in the water drawn from rivers or the sea may cause equipment troubles in factories and the like, and must be removed. In particular, seawater and other water used for power generation is required to be clean because there is a possibility that floating waste may directly lead to serious problems, and the requirements for the removal of dust are extremely high. .

  For this reason, various devices have been proposed as means for removing dust floating in water. There are various types of garbage, such as wood chips, paper waste, waste plastic, household waste, aquatic organisms such as grass, algae, and jellyfish. Generally, after removing a large dust with a bar screen having a large eye, a small dust is removed with a dust removing device using a fine screen.

  As a dust removal device that has been well known, a dust removal device of a type including a rotary screen is known. There are various types of dust removing devices including a rotary screen such as a traveling screen and a net screen. And as the type of screen, for example, a belt-shaped screen type formed in an annular shape, a type in which panels with screens are connected without gaps, a type in which screens with bucket portions are connected without gaps, etc. Yes, this is also different.

In general, a dust removing device of a type including a rotary screen has a structure in which a chain attached with a screen is wound around a pair of upper and lower wheels.
And the chain hung on the wheel arranged up and down circulates up and down in the water channel, so that the screen also circulates and collects garbage in running water. The dust collected by the screen is usually lifted up to the top of the dust removing device in accordance with the circulation of the screen, and then discharged to the outside of the apparatus where it is disposed of separately.

  In general, a wheel for rotating a chain to which a screen is attached is often used as a sprocket or a sprocket wheel. The sprocket has a notch or the like formed on the outer peripheral surface of a disk or cylinder, and is used to engage with a node of the chain to conduct power. Sprockets are sometimes called chain wheels. Typical types of chains engaged with sprockets include roller chains, carrying chains, link chains, and the like.

  Patent Document 1 shows an example of a dust removing device provided with a rotary screen. The dust removing device disclosed in Patent Document 1 is a dust removing device of a type in which a screen is rotated by a sprocket disposed on an upper portion.

Japanese Utility Model Publication No. 51-136635

  The technology disclosed in Patent Document 1 has a structure in which a frame (support frame) that supports a guide rail of a screen is supported by a wall surface of a water channel via a water stop rubber. And in the case which supports a frame on the wall surface in the direction orthogonal to the screen, a groove called a frame guide longitudinal groove is formed on the wall surface, and the structure is supported via a water stop rubber at that location. The reason for disposing the waterstop rubber is to prevent a gap between the wall surface and the frame.

Further, as a method for fixing a frame that supports the guide rails of the screen to the water channel, the prior art described in FIG. 6 is also known. In the prior art shown in FIG. 6, a U-shaped screen guide manufactured in advance is fitted into a groove formed on a side wall of a water channel, and concrete is placed.
Since the linearity is high if the screen guide is made of steel or the like, it is possible to construct a highly linear guide as compared with the conventional technique disclosed in Patent Document 1 described above.

The dust removing device described above may be strongly affected by the waves depending on the place where it is installed.
For example, when a large wave is generated in a water channel provided with a dust removing device, a frame or the like installed in the underwater part is shaken back and forth in the direction of water flow, in other words, in the direction in which the water channel extends. In particular, when an extremely large wave is generated due to the influence of a typhoon or an earthquake, it is greatly shaken, and there is a possibility that a frame or the like that supports the guide rail of the screen may be damaged. Although there is a structure in which the frame is fixed with an anchor bolt or the like as a measure for preventing the swinging of the frame, since installation takes time, a method for preventing the swinging by a simple method has been demanded.

  The present invention has been made in view of the problems as described above, and relates to a method for installing a dust removing apparatus suitable for a water channel that may be strongly affected by waves.

In order to achieve the above object, the method of installing the dust removing apparatus according to the present invention comprises:
(1) An endless chain is placed between the wheels arranged up and down, and the screen attached to the end of the channel is supported by the screen frame. The screen attached to the chain moves up and down in the channel. In the installation method of the rotary dust removing device that circulates and collects the dust in the flowing water flowing through the water channel, the distance from the end of the screen frame to the front end of the frame overhanging portion extending toward the wall surface is An adjustable jack mechanism is arranged and inserted into a U-shaped vertical groove portion formed on the wall surface of the water channel, and the two wall surfaces of the opposing vertical groove portions are used as support surfaces for contacting the support portion of the jack mechanism. The frame overhanging part was supported by the jack mechanism before and after the direction in which the water channel extends.

(2) In the method of installing the dust removing device according to (1), a hole is formed in the frame overhanging portion, and an adjusting bolt is screwed into a fixing nut fixed in accordance with the position of the hole of the frame overhanging portion. The jack mechanism is configured such that the distance to the support portion can be adjusted by making the support plate by placing a seat plate at one end of the adjustment bolt and making the support bolt penetrate.

(3) In the method of installing the dust removing device according to (2), a wrench hanging portion is formed on a part of the seat plate.

(4) In the installation method of the dust removing device according to any one of (1) to (3), the dust frame extends in the vertical direction along the vertical direction of the screen frame and extends in the horizontal direction from the screen frame toward the wall surface. The seal rubber extending to

  ADVANTAGE OF THE INVENTION According to this invention, when a dust removal apparatus is installed in the water channel which may receive the influence of a wave strongly, possibility etc. of a screen frame etc. being damaged can be reduced effectively with simple structure.

It is a figure explaining the support part structure of a dust removal apparatus in connection with embodiment of this invention. It is a figure explaining the structure of the jack mechanism in connection with embodiment of this invention. It is a figure explaining arrangement of a jack mechanism concerning an embodiment of the present invention. It is a conceptual diagram explaining operation | movement of a jack mechanism in connection with embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a reference diagram illustrating an overall configuration of a dust removing device according to an embodiment of the present invention. It is a figure explaining the support part structure of the dust removal apparatus regarding a prior art.

Hereinafter, an example of a preferred embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 to FIG. 5 show a preferred example related to the embodiment of the present invention, and FIG. 1 is a diagram for explaining the structure of the support portion of the dust removing device. 2 to 4 are explanatory diagrams relating to the jack mechanism, FIG. 2 is a diagram illustrating the structure, FIG. 3 is a diagram illustrating the arrangement, and FIG. 4 is a diagram illustrating the operation. FIG. 5 is a reference diagram for explaining the overall configuration of the dust removing device.

Hereinafter, a preferable configuration of the dust removing device 100 according to the present embodiment will be described.
The dust removing device 100 used in the present embodiment is a type including a rotary screen, and includes a driving device 110 and a screen 105 as shown in FIG. The screen 105 is a type in which a plurality of horizontally long screens (metal meshes) each having a bucket portion are connected to each other without a gap and formed into a single large screen, and is sometimes referred to as a traveling screen.

  The screen 105 is arranged in the width direction so as to be orthogonal to the direction of water flow in the water channel, and is installed so as to span between the side walls 201 that are the left and right wall surfaces formed on both sides of the water channel. Yes. The screen 105 is configured to move around in the vertical direction.

  An outline of the dust removing device 100 is shown in FIGS. In the dust removing apparatus 100 according to the present embodiment, a chain 102 that is connected in a ring shape and formed in an endless shape is arranged between the wheels 103A and 103B. Chains 102 are attached to the left and right ends of the screen 105, and a total of two chains 102 are arranged, one on each of the left and right sides of the water channel.

In the present embodiment, sprocket wheels having gears cut on the outer periphery are used as the wheels 103 </ b> A and 103 </ b> B, and a carrying chain is used as the chain 102.
However, the configuration of the wheel 103A or 103B and the chain 102 that can be applied to the present invention is not limited to this, and the wheel 103A or 103B may be configured to reliably drive and rotate the chain 102 to be used. It ’s fine. The chain 102 may be of a type that can be rotated by the wheel 102 with the screen 105 attached, and may be a roller chain or a link chain. If it is in the range which does not deviate, it will not specifically limit.

  Further, in the form shown in FIG. 5, the screen 105 is configured to move around in the vertical direction for the sake of simplicity, but a system in which the screen 105 is inclined may be used. In that case, a longitudinal groove 201A described later may be formed to be entirely inclined, and the screen frame 20 may be installed to be inclined.

  As described above, the left and right ends of the screen 105 are connected and attached to the chains 102 on the respective sides. In the present embodiment, the chain 102 rotates between the upper wheel 103A and the lower wheel 103B by rotating the wheel 103A disposed on the upper part. The screen 105 has a structure that circulates between the wheels 103 </ b> A and 103 </ b> B in accordance with the rotation of the chain 102 and collects dust (also referred to as dust) in the water flow. The collected dust is lifted to the top, discharged there, and disposed of separately.

FIG. 1 shows a structure for attaching the screen 105.
The chain 102 is connected to both ends in the width direction of the screen 105 that is formed by connecting a plurality of screens, and the screen frames 20 having the U-shaped chain insertion portions are installed on both the left and right sides of the screen 105. A chain 102 connected to both ends of the screen 105 was inserted into the insertion portion.

  The guide surface of the chain 102 is disposed on the surface of the insertion portion formed in the screen frame 20 on the downstream side of the water flow so that the chain 102 contacts the guide surface of the screen frame 20 during the circular motion. Thus, the chain 102 is configured to move along the screen frame 20.

  Here, the vertical groove portion 201 </ b> A formed in the side wall 201 is a groove extending in the vertical direction of the water channel, and is formed in accordance with the orbit of the screen 105. In the present embodiment, the wall surface of the longitudinal groove portion 201A of the side wall 201 is formed of a U-shaped steel material to form the screen guide 20B, and a strong support surface that contacts the support portion of the jack mechanism 10 is configured. .

  There are various methods for forming the longitudinal groove 201A. For example, when the side wall 201 is formed by casting with concrete, a large groove is formed in advance by using a technique called boxing at the place where the concrete is placed. . And, when placing the secondary concrete portion 201B in the above-mentioned groove portion formed by a method called boxing, there is a method of forming the vertical groove portion 201A by fitting a steel material having a U-shaped cross section extending in the vertical direction. It is known.

  In the present embodiment, the jack mechanisms 10 are arranged on the frame projecting plates 20A on the left and right ends of the screen frame 20 described above. Although the structure of the jack mechanism 10 will be described later, in the longitudinal groove 201A, the screen frame 20 is supported by the side walls 201 on both sides of the water channel by the jack mechanism 10 formed on the frame extending plate 20A.

  In the present embodiment, as shown in FIG. 3, a plurality of jack mechanisms 10 are arranged in the vertical direction of the water channel (water channel depth direction) and are adjacent to each other in the vertical direction in the fixing direction described later. By disposing the jack mechanisms 10 in different directions, a seat plate 17 (described later) serving as a support portion that is directed back and forth in the direction in which the water channel extends, that is, the direction in which the water flow flows, is disposed.

Hereinafter, the configuration of the jack mechanism 10 formed on the frame extending plate 20A will be described in detail with reference to FIGS.
A plurality of hole portions arranged in the vertical direction are formed in the frame extending plate 20 </ b> A extending in the vertical direction in accordance with the orbit of the screen 105. Then, the fixing nut 15 is fixed in accordance with the position of the hole of the frame projecting plate 20A.

  In addition, the jack mechanism 10 described in the circle surrounded by the upper left part of FIG. 3 is a fixed nut by welding and fixing the hexagon nut to the surface of the frame overhanging plate 20A on the downstream side of the water flow. It was set to 15.

  Then, the adjusting bolt 12 is screwed into and passed through the fixing nut 15 fixed in accordance with the position of the hole of the frame projecting plate 20A. When the adjustment bolt 12 screwed and penetrated to the fixing nut 15 fixed to the position of the hole of the frame overhanging plate 20A rotates, the adjustment bolt 12 advances and retreats with the frame overhanging plate 20A as a base point. Then, by placing a seat plate 17 on one end of the adjusting bolt 12 (on the downstream side of the water flow for the jack mechanism 10 described in the circle enclosed in the upper left part of FIG. 3), a support portion is obtained. The jack mechanism 10 is adjustable in distance.

  Further, the jack mechanism 10 described in the circle surrounded by the lower left part of FIG. 3 is fixed by fixing a hexagon nut to the surface of the frame overhanging plate 20A on the upstream side of the water flow by welding. It was set to 15.

  Then, the adjusting bolt 12 is screwed into and passed through the fixing nut 15 fixed in accordance with the position of the hole of the frame projecting plate 20A. When the adjustment bolt 12 screwed and penetrated to the fixing nut 15 fixed to the position of the hole of the frame overhanging plate 20A rotates, the adjustment bolt 12 advances and retreats with the frame overhanging plate 20A as a base point. Then, a support plate is formed by arranging a seat plate 17 at one end of the adjustment bolt 12 (on the upstream side of the water flow for the jack mechanism 10 described in the circle enclosed in the lower left part of FIG. 3). The jack mechanism 10 is adjustable in distance.

  In the present embodiment, the hexagonal portion 17A of the seat plate 17 is fixed to one end of the adjusting bolt 12 by a technique such as welding. The round plate portion 17B may be fixed to the hexagonal portion 17A, but is not necessarily fixed, and may be installed so as to be sandwiched between the hexagonal portion 17A and the support surface at the time of installation described later.

  In the present embodiment, a plurality of jack mechanisms 10 composed of adjustment bolts 12 and seat plates 17 are arranged in the vertical direction at regular intervals Pt, and the jack mechanisms 10 adjacent in the vertical direction are respectively arranged. By arranging it in different directions alternately, it was set as the structure supported back and forth in the direction where a water channel extends.

As described above, in the present embodiment, the jack plate 10 is configured such that the distance to the support portion can be adjusted by arranging the seat plate 17 at one end of the adjustment bolt 12 as the support portion.
Further, if the support surface of the longitudinal groove portion 201A with which the support portion of the jack mechanism 10 abuts and the frame overhanging plate 20A are arranged in parallel, the force by the seat plate 17 which is the support portion will support the longitudinal groove portion 201A. The load is applied in a direction perpendicular to the screen guide 20B as a surface. Applying a force in a direction orthogonal to the screen guide 20B serving as the support surface of the vertical groove portion 201A is one of preferable modes in that the load on the support surface is less biased.

  In addition, the case where a force cannot be loaded in the direction orthogonal to the support surface of 201 A of vertical groove parts by the cause of a support surface being inclined etc. is assumed. In such a case, for example, by placing a spherical seat between the adjustment bolt 12 and the round plate portion 17B, the force applied to the support surface is dispersed if the support surface and the round plate portion 17B are brought into close contact with each other. This is preferable.

  In the present embodiment, the seat plate 17 is formed by the hexagonal portion 17A and the round plate portion 17B. With this configuration, when adjusting the position of the seat plate 17 by rotating the adjustment bolt 12, the adjustment bolt 12 can be rotated using the hexagonal portion 17 as the wrench hanging portion, and adjustment is possible. . However, the configuration of the seat plate 17 applicable to the present embodiment is not limited to this. For example, a single round plate or the like may be used as the seat plate 17 and departs from the technical idea of the present invention. It is possible to change within the range that does not.

  Further, in the present embodiment, in order to prevent a water flow flowing downstream from the longitudinal groove portion 201A, as shown in FIG. 1, it extends in the lateral direction from the screen frame 20 toward the water channel side wall on the upstream side surface of the screen frame 20. The seal rubber 31 is disposed on the entire vertical direction of the screen frame 20.

  In the present embodiment, frame extending plates 20A are formed at both left and right ends of the screen frame 20 as frame extending portions extending toward the left and right side walls 201, respectively. Then, as shown in FIG. 1, the relationship between the position where the screen 105 is installed and the position of the frame overhanging plate 20A is slightly shifted from the upstream side to the downstream side of the water flow.

That is, by extending a part of the screen frame 20 in the direction of the water channel (the direction in which the water flows), the seat plate 17 of the jack mechanism 10 described in the circle enclosed in the upper left part of FIG. Arranged so as not to coincide with the position.
Further, by extending a part of the screen frame 20 in the direction of the water channel, the bolt head of the adjustment bolt 12 is also connected to the position of the screen frame 20 in the jack mechanism 10 described in the circle enclosed in the lower left part of FIG. Arranged so that they do not match.

  As shown in FIG. 5 (2), the screen 105 moves around the water channel in the vertical direction. For this reason, after the screen 105 is set on the screen frame 20, the screen 105 on the downstream side usually enters the downstream side of the screen 105 on the upstream side, so that the screen 105 on the downstream side may become an obstacle. When performing a wrench operation or the like on the seat plate 17 of the jack mechanism 10 or the bolt head of the adjustment bolt 12 arranged in the vertical groove 201A, for example, a method of removing a part of the screen 105 attached to the screen frame 20 or the like. Therefore, approach such as wrench work is possible from the downstream side of the waterway.

  The upstream portion of the screen 105 (in this embodiment, the screen portion from the bottom to the top in FIG. 5 (2)) and the downstream portion (in this embodiment, the rotation direction of FIG. 5 (2)). In this embodiment, the screen portion from the top to the bottom) is shown in which the upstream portion is guided by the longitudinal groove 201A. About a downstream part, the form which guides or the form which does not guide may be sufficient.

Hereinafter, a method for installing the dust removing apparatus 100 will be described.
As a step before installing the dust removing device 100, when the concrete side wall 201 is formed by placing concrete or the like, the vertical guide 201A is formed in advance in accordance with the location where the screen 105 is disposed, and the screen guide 20B is installed. Arrange.

A screen frame 20 in which the jack mechanism 10 is attached to the frame overhanging plate 20A is prepared, and is loaded from the upper portion along the longitudinal groove 201A and installed. At this time, care is taken to ensure that the frame overhanging plates 20A and the jack mechanism 10 formed at the left and right ends of the screen frame 20 enter the screen guide 20B of the longitudinal groove 201A described above.
When the screen frame 20 is installed, if a positioning pin is previously installed on the bottom surface of the water channel and the lower frame is set in the lower position, the loading operation can be performed more efficiently.

And the inclination etc. of the screen 105 installed in the water channel are measured, and the jack mechanism 10 is adjusted so that it may become a desired state. Alternatively, the inclination of the screen frame 20 installed in the water channel is measured, and the jack mechanism 10 is adjusted so as to have a desired inclination.
Specifically, an operator entering the water channel wrench the seat plate 17 or the bolt head of the adjustment bolt 12 to rotate the adjustment bolt 12. Then, by rotating the adjustment bolt 12, the distance between the frame projecting plate 20A and the seat plate 17 is adjusted.

  That is, in the present embodiment, the support surfaces of the jack mechanism 10 are alternately changed in the vertical and vertical directions of the vertical groove portion 201A, thereby opposing two side surfaces of the screen guide 20B serving as the wall surface of the vertical groove portion 201A, that is, The upstream surface of the water flow and the wall surface on the downstream side were used as support surfaces. Then, the frame plate 20A is supported by the side walls 201 on both sides of the water channel by bringing the seat plate 17 of the jack mechanism 10 into contact with two opposing wall surfaces of the longitudinal groove 201A.

  In the present embodiment, the jack mechanisms 10 arranged at a plurality of locations can be adjusted on-site, respectively, so that the adjustment can be made to the state at each location. In addition, since the screen frame 20 can be securely fixed before and after the direction of water flow, even if it is installed in a water channel that may be strongly affected by waves, the possibility of damage due to the screen being shaken by the waves is reduced. Can be made.

  Further, according to the present embodiment, as described above, the seat head 17 or the bolt head of the adjusting bolt 12 is disposed so as not to coincide with the position of the screen frame 20, so that the seat plate 17 can be viewed from the water channel side. Approach such as wrench work can be done.

  The jack mechanism 10 may be adjusted after the screen 105 is loaded on the screen frame 20 and carried into the longitudinal groove 201A. Furthermore, after using the dust remover 100 for a certain period of time, the situation may be adjusted appropriately by the jack mechanism 10, and the adjustment time is not particularly limited.

  For reference, an adjustment method of the jack mechanism 10 is shown in FIG. When the distance between the frame overhanging plate 20A and the support surface of the side wall 201 by the screen guide 20B is set to L1 as shown in FIG. 4A, the adjustment bolt 12 is rotated counterclockwise (counterclockwise). 4 (2), L2 (L2 <L1) and the distance is shortened. Further, if the adjustment bolt 12 is rotated clockwise (rightward), the distance becomes L3 (L1 <L3) as shown in FIG. 4 (3).

  According to the present embodiment, after the dust removing device 100 is installed, even in a case where the inclination of the screen 105 is desired to be adjusted in the vertical direction or the horizontal direction, the adjustment bolt 12 is adjusted by a simple operation such as rotating with a wrench. The inclination of the screen 105 of the dust removing device 100 can be adjusted to a desired state as appropriate.

  In this embodiment, an example in which the screen 105 orthogonal to the water channel is installed vertically is shown. However, the screen 105 may be installed in a state inclined right and left or up and down with respect to the water channel, and is not particularly limited. .

  As described above, the installation method of the dust removing apparatus according to the present invention is preferably installed in a water channel that may be strongly affected by waves.

10 Jack mechanism 12 Adjustment bolt 15 Fixing nut 17 Seat plate 17A Hexagonal portion 17B Round plate portion
20 Screen frame 20A Frame overhanging plate 20B Screen guide 31 Seal rubber 100 Dust removal device 102 Chain 105 Screen 110 Drive device 201 Side wall 201A Vertical groove 103A Wheel (upper side)
103B wheel (lower side)

Claims (4)

By arranging an endless chain between the upper and lower wheels, and using the screen frame supporting the end with the wall surface of the water channel as a guide,
In the installation method of the rotary dust removal device that circulates the screen attached to the chain up and down in the water channel and collects dust in flowing water flowing through the water channel,
A jack mechanism that can adjust the distance from the end of the screen frame toward the wall surface and extending to the wall surface is adjustable, and inserted into the U-shaped vertical groove section formed on the wall surface of the water channel. And
A method of installing a dust removing device in which two wall surfaces of opposing vertical groove portions are used as support surfaces for contacting the support portion of the jack mechanism, and the frame overhanging portion is supported by the jack mechanism before and after the water channel extends.   A hole is formed in the frame overhang, and an adjustment bolt is screwed through the fixing nut fixed in accordance with the position of the hole in the frame overhang, and a seat plate is disposed at one end of the adjustment bolt. The installation method of the dust removing device according to claim 1, wherein a jack mechanism capable of adjusting a distance to the support portion by using the support portion.   The installation method of the dust removal apparatus of Claim 2 which formed the wrench hanging part in a part of said seat plate.   4. The sealing rubber according to claim 1, further comprising a seal rubber extending in a vertical direction along a vertical direction of the screen frame and extending in a horizontal direction from the screen frame toward a wall surface. 5. How to install a dust removal device.

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