JP6635538B1 - Dust remover wiper device - Google Patents

Abstract

Provided is a wiper device capable of preventing a residue from flowing out downstream, facilitating maintenance work, and being able to install a dust collector of a back-falling front-face-raising type in a limited narrow space. A rake (2) descends on the back side of a screen (1), and is provided in a dust remover that circulates so as to scoop up the residue from the water on the front side and wrap around to the back side at the top to scrape off the residue. In the wiper device of the dust remover that operates the wiper 4, the wiper 4 is located on the rear side of the screen 1 so as to face the upper part of the circulating path of the rake 2 from behind, and includes a chute 4b integrated with the blade 4a. , Which is slidably supported along a guide rail 5 fixed to the main body frame 13 and connected to the main body frame 13 via a rod unit 6 extending upward, the rod unit 6 includes a lifting rod 7 and a damper 8. And a lifting spring 10 for lifting the lifting rod 7. [Selection diagram] Fig. 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device provided in a rear-falling and front-face scraping type dust remover for scraping off residue (solid debris) attached to a rake.

  As one type of a dust remover used in a treatment plant such as a water supply system or a sewer system, a dust collector with a rear-falling front surface as shown in FIG. 6 is used. Is described.

  In this dust remover, as shown in FIG. 7, the screen 51 rises in a state in which the screen 51 is tilted backward from the bottom to the upper part of the water channel W toward the downstream side, and the slope of the upper part is gentle following the screen 51 above the water surface. An apron 52 extending rearward is arranged, and a plurality of rakes are circulated in the vertical direction along the front side and the back side of the screen 51 and the apron 52 as the chain 54 guided by the side chain guide 53 runs. A motor 56 for driving the chain 54 is provided on a gantry on the water surface.

  In such a dust remover, the residue captured on the front side of the screen 51 is scraped up by the rake 55 along the front surfaces of the screen 51 and the apron 52, and the rake 55 passes through the rear end of the upper end of the apron 52 and is located on the rear side. At the time of turning around, the residue naturally falls from the apron 52, is received by the conveyor 57, and is carried out of the machine by the conveyor 57.

  However, in such a dust remover, there is a possibility that the residue adhering to the rake 55 does not fall down naturally, descends on the back side together with the rake 55, and flows out downstream.

  As a countermeasure, as shown in FIG. 8, a dust remover provided with a wiper device for scraping off the residue from the upper surface 55a of the rake 55 may be employed.

  The wiper device of the dust remover is pivotally supported above the scrape upper surface 55a of the rake 55 in a direction in which the gradient of the circulation path of the rake 55 is loosened and immediately before the part that wraps around from the front side to the back side. And a damper 59 for alleviating the impact when the wiper 58 returns, and the wiper 58 which is pushed by the rake 55 and swings along with the circulation of the rake 55, and the upper surface 55 a of the rake 55 And scrapes off the residue from the upper surface 55a, and then returns to the initial posture.

JP-A-2002-167735

  However, since the chain guide 53 is bent along the circulation path of the rake 55 in the dust remover to which the above-described wiper device is mounted, the depth dimension in the front-rear direction in the water channel is large, and the limited narrow space is required. May not be installed

  In addition, since the chain 54 comes into contact with the bent portion of the chain guide 53 with a strong force, the chain rollers and the chain guide 53 of the chain 54 are worn out at an early stage, and a great deal of time is required for maintenance such as replacement of parts.

  Therefore, the present invention is intended to provide a wiper device that can prevent the residue from flowing out to the downstream, facilitates maintenance work, and can be installed in a limited narrow space with a back-down descent and front-side scraper. Things.

In order to solve the above-described problems, the present invention provides a method in which the rake descends on the back side of the screen as the endless chain rotates, scoops up the residue from the water on the front side, and wraps around the back side at the top. In a wiper device of a dust remover that is provided in a circulating dust remover and operates a wiper to scrape off residue from the upper surface of the rake,
The wiper is positioned so as to face from the rear to an upper part of a circulating path of the rake that wraps around on the back side of the screen, and has a chute integrated with a blade on a tip side, and is provided on a main body frame above a water channel from a front side to a rear side. While being slidably supported along a guide rail fixed in a state inclined downward toward the side, connected to the main body frame via a rod unit extending upward,
The rod unit includes a swinging rod bearing in which a lifting rod and a damper are connected in series via a hinge so as to be able to bend and extend freely, and the lifting rod is pivotally supported on the main body frame via a hinge. It is provided with a lifting spring that is slidably inserted into and is urged in a direction in which the lifting rod is lifted,
At the time of normal rotation of the chain, the wiper is pushed down by the rake in a descending process while being along the guide rail, the damper of the rod unit extends in the axial direction, the lifting rod and the damper bend, and the wiper The blade is slid on the upper surface of the rake, so that the residue is scraped off from the upper surface of the rake and slides down along the upper surface of the chute of the wiper,
When the blade of the wiper separates from the upper surface of the rake, the wiper returns to the initial position while being buffered by the damper by the urging force of the lifting spring of the rod unit.

Further, the wiper is swingably coupled to a slider slidably held by the guide rail in a direction in which the tip side moves up and down, and is urged in a direction along the guide rail by a return spring,
At the time of the reverse rotation of the chain, the wiper is pushed up by the rake in the ascending process, and swings so that the front end side is jumped up with respect to the guide rail,
When the blade of the wiper separates from the upper surface of the rake, the wiper returns to a position along the guide rail by the biasing force of the return spring.

  In the wiper device of the dust remover according to the present invention, the rake circulation path is bent at the upper portion to reduce the gradient, and the residue is scraped off from the upper surface of the rake to prevent the residue from flowing downstream. It is also possible to make the rake circulation path a steeply straight line, reduce the plane depth dimension of the dust remover, and enable installation in a limited narrow space.

  Further, by making the rake circulation path straight, there is no bent part due to the chain being guided by the chain guide on the ascending and descending paths, so that damage due to wear of parts such as the chain is prevented.

  Further, since the wiper has a simple structure in which the wiper is operated while being supported by the guide rail and the rod unit, there is no need to configure a complicated link mechanism, and maintenance work such as replacement of components can be easily performed. In addition, since there is no need for a mechanism for swinging the rake relative to the chain, the rake can be easily replaced.

Overall side view of a dust remover provided with a wiper device according to an embodiment of the present invention Perspective view showing the same wiper device Side view showing the initial process of the operation of the wiper when the same chain rotates forward Side view showing the end process Side view showing the retracting operation of the wiper when the chain is reversed Perspective view showing a conventional back-falling front-face-raising dust remover Side view showing a dust remover described in Patent Document 1 Side view showing the operation of the wiper device of the conventional dust remover

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the dust remover includes a screen 1 that is immersed in water in a water channel W, a rake 2 that scrapes up residue from the water along the screen 1, and both ends of the rake 2 are connected. An endless chain 3 for circulating the rake 2 along with the rotation travel is provided, and the upstream side in the flow direction of the water channel W is forward, and the downstream side is rearward.

  The screen 1 has a large number of bars extending in the vertical direction arranged side by side at a predetermined gap in the horizontal direction, and is installed to be inclined backward from the lower end to the upper end. It is exposed.

  The rake 2 has a comb-like tip end meshing with the screen 1 from the upstream side of the water channel W, and descends on the rear surface side of the screen 1 and wraps around the front side at the bottom of the water channel W when the chain 3 rotates forward. 1 rises on the front side and goes around to the back side at the top. With this circulation, the upper surface 2a of the rake 2 becomes upward on the front side of the screen 1 and downward on the rear side.

  On the back side of the raking surface 2a of the rake 2, there is provided a strip-shaped rib 2b standing upright at a right angle to the raking surface 2a, and the portion along the leading edge of the rib 2b is directed toward the inside of the rake 2 circulation path. It is bent at an obtuse angle. On both sides of the rake 2, there are provided rollers 2 c guided by a chain guide 11 extending along the chain 3.

  The chain 3 is wrapped around sprockets 14 and 15 provided on the base 12 of the pond bottom B of the water channel W and the main frame 13 above the upper floor F of the ground, and meshes with the sprocket 15 of the main frame 13. It is designed to be rotated by a motor.

  The side end of the rake 2 is fixed to the link plate of the chain 3 via an attachment, and the rake 2 is fixed so as not to swing with respect to the chain 3 and to always maintain a constant posture. I have.

  Such a dust remover is provided with a wiper device, which is an object of the present invention, for operating a wiper 4 for scraping off residue from the upper surface 2a of the rake 2 in a descending process.

  The wiper 4 is located on the rear side of the screen 1 so as to face the upper part of the circulation path of the rake 2 from the rear, and extends rearward to the blade 4a on the tip end which abuts on the upper surface 2a of the rake 2 substantially vertically. The plate-shaped chutes 4b are integrally connected.

  Below both sides of the wiper 4, the guide rail 5 is fixed to the side main body frame 13 in a state inclined downward from the front side to the rear side.

  Rollers 4d provided on sliders 4c below both sides of the chute 4b are fitted to the guide rails 5, and the rollers 4d are guided by the guide rails 5, so that the wiper 4 can slide along the guide rails 5 freely. Supported.

  The wiper 4 is swingably coupled to the slider 4c via a horizontal hinge 4e in a direction in which the tip side moves up and down, and is returned in a direction along the guide rail 5 by a return spring 4f provided at the hinge 4e. Being energized. The return spring 4f is a torsion coil spring interposed between the slider 4c and the rib of the chute 4b.

  The wiper 4 is connected to the body frame 13 via rod units 6 extending upward from both sides of the chute 4b.

  The rod unit 6 has a structure in which a lower lifting rod 7 and an upper damper 8 are connected in series via a horizontal hinge 6a so as to be flexibly extendable, and a lower end of the lifting rod 7 is a chute of the wiper 4. 4b, the upper end of the damper 8 is rotatably connected to the main body frame 13 via horizontal hinges 6b and 6c, respectively.

  The lifting rod 7 is slidably inserted in the longitudinal axis direction into a swingable rod bearing 9 that is swingably supported on the main body frame 13 via a horizontal hinge 9a. Between the flange at the upper end of the lifting rod 7 and the oscillating rod bearing 9, a lifting spring 10 of a compression coil spring for urging the oscillating rod bearing 9 in the direction in which the lifting rod 7 is pulled up is provided. Have been.

  In the dust remover equipped with the above-described wiper device, as shown in FIGS. 3 and 4, when the chain 3 rotates forward, the wiper 4 is pushed down by the rake 2 in the descending process, and the wiper 4 is moved to the guide rail 5. Along with this, the lifting rod 7 and the damper 8 bend accordingly, the lifting rod 7 slides downward with respect to the oscillating rod bearing 9 and the damper 8 moves in the axial direction. It extends and swings so that the lifting rod 7 and the damper 8 bend.

  When the blade 4a of the wiper 4 comes into sliding contact with the upper surface 2a of the rake 2, the residue is scraped off from the upper surface 2a of the rake 2, and slides down along the upper surface of the chute 4b of the wiper 4, and a conveyor or the like. Is carried out of the machine.

  Thereafter, when the blade 4a of the wiper 4 separates from the upper surface 2a of the rake 2, the lifting rod 7 slides upward with respect to the oscillating rod bearing 9 by the biasing force of the lifting spring 10, and the damper 8 moves. The lifting rod 7 and the damper 8 are returned to the initial position, and the wiper 4 is returned to the initial position.

  On the other hand, if the rotation of the chain 3 by the motor is hindered due to the biting of large debris during the scraping process of the residue, as shown in FIG. Is pushed up by the rib 2b of the rake 2 in the ascending process, and swings so that the tip end side is flipped up with respect to the guide rail 5.

  When the blade 4a of the wiper 4 separates from the upper surface 2a of the rake 2, the wiper 4 returns to the position along the guide rail 5 by the urging force of the return spring 4f.

  As described above, in the wiper device as described above, the sludge is scraped off from the upper surface 2a of the rake 2 without bending the circulating path of the rake 2 at the upper part to loosen the slope, and the wiper is moved downstream of the sludge. The rake 2 can be prevented from flowing out and the circulation path of the rake 2 can be made a steep straight line to reduce the plane depth dimension of the dust remover and enable installation in a limited narrow space.

  Further, by making the circulating path of the rake 2 straight, there is no bent part due to the chain 3 being brought into contact with the chain guide 11 on the ascending and descending paths, so that damage due to wear of parts such as the chain 3 is prevented. You.

  In addition, since the wiper 4 has a simple structure in which the wiper 4 is operated while being supported by the guide rails 5 and the rod units 6 on both sides, there is no need to configure a complicated link mechanism, and maintenance work such as replacement of components can be easily performed. be able to. In addition, since there is no need for a mechanism for swinging the rake 2 with respect to the chain 3, the rake 2 can be easily replaced.

Reference Signs List 1 screen 2 rake 2a scraping surface 2b rib 2c roller 3 chain 4 wiper 4a blade 4b chute 4c slider 4d roller 4e hinge 4f return spring 5 guide rail 6 rod unit 6a, 6b, 6c hinge 7 lifting rod 8 damper 9 swing type Rod bearing 9a Hinge 10 Lifting spring 11 Chain guide 12 Base 13 Main frames 14, 15 Sprocket B Pond bottom F Upper floor W Waterway

Claims (2)

The rake (2) descends on the back side of the screen (1) as the endless chain (3) rotates, rakes up the residue from the water on the front side, and circulates around the back side at the top In the wiper device of the dust remover, which is provided in the dust remover and operates the wiper (4) to scrape off the residue from the upper surface (2a) of the rake (2),
The wiper (4) is located so as to face from the rear to the upper part of the circulating path of the rake (2) wrapping around on the back side of the screen (1), and a chute integrated with the blade (4a) on the tip side ( 4b), and is slidably supported along a guide rail (5) fixed to the main body frame (13) above the water channel in a state of being inclined downward from the front side to the rear side and extending upward. Connected to the body frame (13) via a rod unit (6),
In the rod unit (6), the lifting rod (7) and the damper (8) are flexibly connected in series via a hinge (6a) so that the lifting rod (7) is connected to the main body frame (13). A lifting spring that is slidably inserted into a swinging rod bearing (9) that is swingably supported via a hinge (9a), and that urges the lifting rod (7) in a lifting direction. (10)
During forward rotation of the chain (3), the wiper (4) is pushed down by the rake (2) during the descending process along the guide rail (5), and the damper (8) of the rod unit (6) is moved. Extending in the axial direction, the lifting rod (7) and the damper (8) bend, and the blade (4a) of the wiper (4) slides on the scraping surface (2a) of the rake (2), The residue is scraped off from the upper surface (2a) of the rake (2) and slides down along the upper surface of the chute (4b) of the wiper (4),
When the blade (4a) of the wiper (4) separates from the upper surface (2a) of the rake (2), the wiper (4) is biased by the lifting spring (10) of the rod unit (6). A wiper device for a dust remover, wherein the wiper device returns to an initial position while being buffered by the damper (8). The wiper (4) is swingably coupled to a slider (4c) slidably held on the guide rail (5) in a direction in which the tip side moves up and down, and the guide rail is returned by a return spring (4f). Biased in the direction along (5),
During the reverse rotation of the chain (3), the wiper (4) is pushed up by the rake (2) in the ascending process, and swings so that the tip side is flipped up with respect to the guide rail (5),
When the blade (4a) of the wiper (4) separates from the upper surface (2a) of the rake (2), the wiper (4) is brought into contact with the guide rail (5) by the urging force of the return spring (4f). The wiper device for a dust remover according to claim 1, wherein the wiper device returns to a posture along the same.

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