JP2007177448A - Dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector installable in a narrow area. <P>SOLUTION: This dust collector 1 comprises a dust collector body 2 arranged along a screen, a suspension wire 8 for suspending the dust collector body 2 and a lifting device such as a hoist. The dust collector body 2 has a body frame 3, a main roller 4 and a side roller 5. The dust collector body 2 also has a plurality of rakes 6 of fixing a plurality of bar-shaped rake claws 6a at predetermined intervals. The rakes 6 are rotatably installed in the dust collector body 2 with a rake rotary shaft 6c as the axis, and stop by dead weight in a refuse raking-up position substantially vertical to the dust collector body 2. When the rakes 6 exist in the refuse raking-up position, a part of the tip of the rake claws 6a is brought into a state of being positioned between respective screen bars. The respective rakes 6 are independently and rotatably connected by a rake connecting part. The respective rakes 6 can rotate at different angles. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dust removing device that removes adhering dust on a screen installed in a water channel. Specifically, by adopting a simple configuration including a main body portion having a rotatable rake portion and an elevating means, the entire apparatus can be reduced in size and installed in a narrow place.

  At a water intake of a hydroelectric power plant or the like, a screen in which rod-shaped metals are arranged at a predetermined interval is installed in order to prevent dust from entering the water intake. There are two methods for removing dust trapped on the screen: a method performed by human work and a method using a dust removing device. As a dust removing device, a rake reciprocating type in which the rake reciprocates along the screen and a rake rotating type in which the rake rotates along the screen are generally used.

  In the rake reciprocating type, an arm to which a rake is attached is extended on the screen from a dust removing device main body installed at the upper part of the screen. This rake reciprocates on the screen to remove dust on the screen. In the rake rotation type, the rake attached to the chain rotates on the screen to enable continuous dust removal.

  In addition to the above, a dust removal device that facilitates installation and removal of the device main body has been proposed (see, for example, Patent Document 1). The dust removal device described in Patent Document 1 includes a first support mechanism that supports the frame outside the water channel and a second support mechanism that supports the frame inside the water channel, thereby facilitating the attachment and detachment of the dust removal device body. In addition, the dust removing device main body can be stably supported.

Japanese Patent Laid-Open No. 11-21856

  However, the conventional dust removal method described above has the following problems. The method of removing dust by human work is accompanied by difficulty when moving on the screen. In addition, both the conventional rake reciprocating dust removing device and the rake rotating dust removing device have many moving parts and a complicated structure, so that the device main body becomes large. For this reason, in order to install a dust removal apparatus main body, a large area | region will be needed at the upper part of a screen.

  Further, the dust removing device disclosed in Patent Document 1 is a configuration for facilitating the attachment and detachment of the dust removing device main body, and cannot be downsized by simplifying the configuration of the entire device.

  The present invention has been made to solve such a problem, and an object thereof is to provide a dust removing device that can be installed in a narrow area.

  In order to solve the above-described problem, a dust removing device according to the present invention has a rake portion composed of a plurality of scraping pieces fixed at a predetermined interval in a dust removing device that removes adhering dust on a screen installed in a water channel. A main body part and a lifting means for raising and lowering the main body part along the screen, the rake part is pivotally supported by the main body part, and is positioned by its own weight at a dust scooping position for scooping up the dust adhering to the screen, In addition, it is rotatable by a predetermined angle from the dust scraping position upward.

  In the dust removing apparatus according to the present invention, the dust attached to the screen is removed as follows. First, the main body is lowered along the screen to the vicinity of the lower end by the lifting means. At this time, when the dust deposit on the screen hits the rake portion, the rake portion rotates upward and escapes, so that the downward movement of the main body portion is not hindered.

  After lowering the main body portion to the lower end with respect to the screen, the main body portion is lifted up to the vicinity of the upper end portion along the screen by lifting means. At this time, the adhering dust on the screen is scraped up by each scraping piece of the rake portion at the dust scraping position, and lifted to the vicinity of the upper end portion of the screen together with the main body portion. Thereafter, the dust that has been lifted up to the vicinity of the upper end of the screen is removed from the main body by hand or the like.

  The dust removing device of the present invention is configured to remove the adhering dust on the screen by the lowering operation and lifting operation of the main body along the screen, and the necessary power source is only the lifting means. Therefore, in the dust removing apparatus of the present invention, the entire apparatus can be downsized and installed in a narrow place.

  Embodiments of the dust removing apparatus of the present invention will be described below with reference to the drawings.

<Configuration example of the dust removing apparatus of the present embodiment>
1 to 4 are explanatory views showing the configuration of the dust removing apparatus 1 of the present embodiment. 1 to 4 all show a state where the dust removing device 1 is installed on a screen 10 to be described later. FIG. 1 is a perspective view showing an outline of the dust removing apparatus 1 and is shown by a broken line in a state where a part of the structure is seen through for explanation. In FIG. 1, only a part of a screen 10 to be described later is shown. FIG. 2 is a side view of the dust removing device 1, and a part of the configuration is shown by a broken line for explanation. FIG. 3 shows a state in which the dust removing device 1 is viewed from a direction perpendicular to the installation direction of the screen 10 to be described later. In FIG. 3, only a part of the screen 10 to be described later is shown. FIG. 4 shows a cross-sectional shape of the dust removing device 1 as viewed from the installation direction of the screen 10 described later.

  The dust removal apparatus 1 of this Embodiment is installed in order to remove the adhering dust on the screen 10 with which the water intake 14, such as a hydropower station, was equipped, for example. As shown in FIGS. 1 to 4, the screen 10 is composed of bar-shaped screen bars 10 a arranged at a predetermined interval. The dust removing apparatus 1 has the following configuration, for example.

  As shown in FIGS. 1 to 4, the dust remover 1 is suspended via a dust remover main body 2 installed along a screen 10, a suspension wire 8 for hanging the dust remover main body 2, and a hook 12. A lifting device such as a hoist (not shown) for lifting and lowering the dust removing device main body 2 suspended from the wire 8 is provided. The dust removing device main body 2 includes a main body frame 3 having a length corresponding to the width of the screen 10, and a main roller 4 and a side roller 5 attached to a side surface of the main body frame 3. The main roller 4 is attached with the width direction of the screen 10 as an axis, and the side roller 5 is attached with the direction perpendicular to the surface of the screen 10 as an axis. Further, the side walls 11 of the screen 10 are provided with door grooves 11a corresponding to the shapes of the main roller 4 and the side rollers 5, respectively, and the main roller 4 and the side rollers 5 are positioned in the door grooves 11a. The dust removing device main body 2 is configured to be slidable with respect to both side walls 11.

  The dust removing device main body 2 includes a plurality of rakes 6 in which a plurality of rod-shaped rake claws 6a are fixed at predetermined intervals by a rake connecting plate 6b. The rake 6 is attached to the dust removing device main body 2 so as to be rotatable about the rake rotation shaft 6c. As shown in FIGS. 2 to 4, a rake stopper 7 is provided so that each rake claw 6 a of the rake 6 stops at a position substantially perpendicular to the dust removing device main body 2. Accordingly, the rake 6 is configured to be rotatable from the position indicated by the solid line in FIG. 2 to the position indicated by the broken line. Further, the position indicated by the solid line in FIG. 2 of the rake 6 is referred to as a dust scooping position. In the state where the dust removing device main body 2 is installed with respect to the screen 10, the rake 6 is in a dust scraping position with its own weight.

  Further, as shown in FIG. 2A and FIG. 4B, when the rake 6 is in the dust scraping position, a part of the tip of the rake claw 6a is located between the screen bars 10a. Further, each rake 6 is independently pivotably connected by a rake connecting portion 6d. Therefore, as shown in FIG. 3, each rake 6 can be rotated to a different angle. The dust removing device main body 2 is an example of a main body, the rake claw 6a is an example of a scraping piece, and the rake 6 is an example of a rake portion.

  Further, hanging wire attachment portions 3a are provided in the vicinity of both left and right end portions of the upper portion of the dust removing device main body portion 2, and the hanging wire 8 is attached thereto.

  The dust removing device main body 2 is mainly composed of a light metal such as an aluminum alloy in consideration of lifting load restrictions such as a hoist.

  By providing such a configuration, the dust removing device main body 2 is lowered along the screen 10 to the vicinity of the lower end of the screen 10 by a hoist or the like, and further the dust removing device main body 2 is lifted to the vicinity of the upper end of the screen 10. Is possible. Lifting devices such as the main roller 4, the side roller 5, the suspension wire 8, and the hoist are examples of lifting means.

<Operation example of the dust removing apparatus of the present embodiment>
Next, an operation example of the dust removing device 1 described with reference to FIGS. 1 to 4 will be described. FIG.5 and FIG.6 is explanatory drawing which shows the operation example of the dust removal apparatus 1, and shows the state which looked at the dust removal apparatus 1 from the side surface similarly to FIG. FIG. 5 shows a state where the dust removing device main body 2 is lowered along the screen 10, and FIG. 6 shows a state where the dust removing device main body 2 is raised along the screen 10.

  When the dust attached to the screen 10 is removed by the dust remover 1, first, the dust remover main body 2 is lowered along the screen 10 to the vicinity of the lower end of the screen 10 by a hoist or the like. Here, since each rake 6 is in the dust removing position, each rake 6 hits the dust 13 adhering to the screen 10. At this time, the rake 6 corresponds to the size of the dust 13, as shown in FIG. It will be in a state where it escaped by turning the angle. Therefore, the lowering operation of the dust removing device main body is not hindered. Further, since the dust removing device main body is configured to include a plurality of rakes 6, only the rake 6 hit by the dust is turned and escaped, and the dust removing device main body can be smoothly lowered. Become.

  After the dust remover main body 2 is lowered to the vicinity of the lower end of the screen 10, the dust remover main body 2 is lifted along the screen 10 to the vicinity of the upper end of the screen 10 by a hoist or the like. Here, as shown in FIG. 6, the rake claw 6a of each rake 6 is supported by the rake stopper 7 at the dust removing position. Therefore, the dust 13 adhering to the screen 10 is scraped up by the rake claw 6 a of each rake 6 and lifted to the vicinity of the upper end of the screen 10 together with the dust removing device main body 2.

  After lifting the dust remover main body 2 to the vicinity of the upper end of the screen 10, the dust scraped up by the rake 6 is removed from the dust remover main body 2 by a human manual operation or the like.

  The dust removing device 1 of the present invention is configured to remove the dust particles on the screen 10 by lowering the dust removing device main body 2 along the screen 10 and lifting it along the screen 10, and a necessary power source is Only a lifting device such as a hoist. Therefore, in the dust removing apparatus 1 of the present invention, it is possible to install the dust removing apparatus 1 even in a small water intake where the conventional dust removing apparatus cannot be installed by downsizing the entire apparatus.

  Moreover, the dust removal apparatus 1 of this invention is a simple structure provided with lifting apparatuses, such as the dust removal apparatus main-body part 2 which has the rake | rake 6, the suspension wire 8, and a hoist. Therefore, since the overall configuration of the apparatus is simple, it can be manufactured easily and at a lower cost than a conventional dust removing apparatus, and the amount of maintenance required can be reduced.

  Furthermore, the dust removal apparatus 1 of the present invention can use a general-purpose device such as a hoist as a lifting device that lifts and lowers the dust removal body 2.

  The present invention is applied to a dust removing device that removes dust attached to a screen installed in a water channel such as a hydroelectric power plant.

It is a schematic perspective view which shows the structural example of the dust removal apparatus of this Embodiment. It is explanatory drawing which shows the structural example of the dust removal apparatus of this Embodiment. It is explanatory drawing which shows the structural example of the dust removal apparatus of this Embodiment. It is explanatory drawing which shows the structural example of the dust removal apparatus of this Embodiment. It is explanatory drawing which shows the operation example of the dust removal apparatus of this Embodiment. It is explanatory drawing which shows the operation example of the dust removal apparatus of this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust removal apparatus 2 Dust removal apparatus main-body part 4 Main roller 5 Side roller 6 Rake 6a Rake claw 6c Rake rotation shaft 8 Hanging wire 10 Screen 10a Screen bar 11 Side wall 11a Door groove

Claims (3)

In the dust removal device that removes the dust attached to the screen installed in the waterway,
A main body portion having a rake portion composed of a plurality of scraping pieces fixed at a predetermined interval;
Elevating means for elevating and lowering the main body along the screen,
The rake portion is pivotally supported by the main body portion, and is positioned by its own weight at a dust scraping position for scraping dust attached to the screen, and is rotated by a predetermined angle upward from the dust scraping position. A dust removing device characterized by being free. The main body includes a plurality of the rake portions,
The dust removing apparatus according to claim 1, wherein each rake portion is independently rotatable. As the elevating means, an elevator for elevating the main body is provided,
The dust removing device according to claim 1, wherein the main body includes a roller that is slidable with respect to both side walls of the water channel.

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