JPH0682120U - Dust remover - Google Patents

Abstract

(57) [Summary] [Purpose] Even when there is a large amount of dust scratched, the rake is prevented from opening during scraping and effective dust removal is possible. [Structure] A traveling platform 6 is provided on the slab 3 of the dam intake 2, and a screen 4 is provided on the platform 6 substantially perpendicular to the intake 2.
Correspondingly to this, a front apron 10 is provided, a dust receiving hopper 12 is provided, and the base end of a rake support arm 14 that is key-shaped in side view is provided on the pedestal 6 so as to be swingable back and forth by a horizontal shaft 15. The driving means 17 is provided and the arm 1
A rake beam support guide base 21 is provided at the front end of 4 by a horizontal shaft 25 so that the rake beam support guide base 21 can be tilted back and forth.
4, a rake opening / closing driving means 28 is provided, a rake beam 22 having a rake 31 at its lower end is vertically movable on the rake beam supporting guide 21, and a driving means 36 for the rake beam 22 is provided on the guide 21. The front surface of the apron 10 is an arc surface centered on the axis of the horizontal shaft 15 of the arm 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention scrapes up and removes dust and debris on the upstream side of the substantially vertical dust removal screens that are installed in the intakes of dams and rivers, pumping stations, and waterways of water treatment plants. It relates to a dust remover.

[0002]

[Prior art]

 Conventionally, as a dust remover of this type, a rake is hung on the upstream side of the screen of the intake port with a wire rope or a rod, and the dust collected on the front of the screen is raised from the bottom to the top. Some have been scraped up to remove.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional technique, when the dust removal screen is installed at the intake port in a vertical or nearly vertical state, the rake has a insufficient force to be pressed against the screen. Therefore, when the amount of dust increases, the center of gravity of the rake is increased during scraping. There was a problem in that the rake tip opened apart from the screen when it opened to the upstream side, dust was dropped from the rake, and it was not possible to scrape it effectively.

The present invention has been made in view of the above situation, and an object of the present invention is to prevent the rake from being separated from the screen during scraping even if the amount of scratched dust increases. An object of the present invention is to provide a dust remover that can reliably raise the dust effectively and exert the dust removing function.

[0005]

[Means for Solving the Problems]

 In the present invention, the following technical measures are taken to achieve the above object. That is, according to the present invention, a traveling platform is provided on a slab such as a dam intake port, and a front apron is provided directly above the screen provided substantially perpendicular to the intake port on the platform, and the dust receiving hopper is installed. Further, the base end of a rake support arm, which is substantially key-shaped when viewed from the side, is provided so as to be capable of swinging back and forth around a horizontal axis parallel to the screen surface, and a drive means for the arm is provided. A rake beam support guide is mounted on the front end of the arm so that it can be tilted by a horizontal axis parallel to the screen surface, and a rake opening / closing drive means is provided between the guide and the arm. And a rake beam driving means is provided on the guide base, and the front surface of the front apron is centered on the axis of the arm horizontal axis. It is characterized in that the arc surface.

[0006]

[Action]

 According to the present invention, when the rake support arm is located at the rear limit, the rake beam is lowered by the lifting drive means to position the rake at the lower limit, and the rake support arm is swung forward by the drive means. After that, the rake beam support guide is pushed forward by the rake opening / closing drive means to bring the rake tip into abutment engagement with the front surface of the dust removal screen to close it, and then keep that closed state. By raising the rake beam by the rake beam drive means, the dust on the front of the screen is picked up by the rake.

[0007] While the rake is rising, the rake is pressed against the screen by the rake opening / closing drive means with an appropriate force. Therefore, even if the amount of dust is large, the rake is rising. The closed state is maintained without leaving the screen. Then, when the tip of the rake rises to the front apron, the rake support arm is rotated rearward by the drive means about the horizontal axis, so that the rake tip slides on the front apron to remove dust from the front apron. To the rear of the trash support hopper, and the rake support arm stops at the backward limit.

Then, the rake opening / closing drive means tilts the rake beam support guide table rearward to open the rake, and one cycle of dust removal work is completed. In this way, the rake rest position is when the rake support arm is at the rear limit, the rake beam reaches the upper limit, and the rake is in the open state, and the traveling frame moves in this state.

When one cycle of the dust removing work is completed by the above operation, when the dust removing work is subsequently performed, the dust removing operation is repeated in the above order. Then, when the dust removal work for one dust removal screen is completed, it is possible to move the traveling platform parallel to the screen and perform the dust removal work for multiple screens arranged in parallel.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In the drawing, (1) is the water surface of the dam, (2) is the intake, (3) is the slab above the intake (2), and (4) is the screen for dust removal installed vertically to the intake (2). On the slab (3), two rails (5) were laid parallel to the screen (4) along the dam dam, and a running platform (6) that was constructed like a tower was placed through wheels (7). It is mounted on a rail (5) and is driven by a drive motor (8) via a transmission chain (9).

A front apron (10) is arranged at the front end of the pedestal (6) immediately above the screen (4), and the lower end thereof is closely arranged so as to continue corresponding thereto. The rear side of the ron (10) is a dust throw chute (11) that follows it, and a dust receiving hopper (12) movably provided inside the traveling platform (6) in parallel with the rail (5) removes dust. It is supposed to be thrown in.

A bracket (13) is provided on the left and right at the center of the inside of the pedestal (6) so that the base of the rake support arm (14) is inserted between the brackets (13) and The base end (14A) is attached to the lower end of the bracket (13) so as to be able to swing back and forth by a horizontal shaft (15) parallel to the screen (4). The rake support arm (14) consists of two left and right members that are substantially key-shaped when viewed from the side. The tip ends of the rake support arm are connected by a connecting member (16), and the left and right tips (14B) are both mounted on the traveling platform (6). It is possible to project forward from the front end.

Reference numeral (17) is an arm driving means, which is composed of, for example, an electric cylinder (or hydraulic cylinder), and a base of which is vertically swingable around a horizontal axis at a central portion of a rear end of the traveling platform (6). ), Attached via a horizontal shaft (19), and its rod (17A) outer end is rotatably connected to the center of the rear surface of the connecting member (16) of the arm (14) via a horizontal pin (20). The rake support arm (14) swings back and forth around the horizontal axis (15) as the rod (17A) moves back and forth.

Reference numeral (21) is a rake beam support guide frame, which is framed in the shape of a rectangular parallelepiped, and in which a plurality of guide rollers (23) are rotatably supported so that the rake beam (22) can be inserted and supported vertically in the center. A bracket (24) provided on the lower end of the rear end is provided at the front end (14B) of the rake support arm (14) in the vertical direction via the front apron (4) and a horizontal axis (25) which is parallel to the front apron (4). It is mounted so that it can be tilted. In addition, a rake mounted on a bracket (26) protruding from the rear of the upper end of the support base (21) so as to be swingable on the connecting member (16) of the rake support arm (14) via the bracket (27). The outer end of the rod (29) of the opening / closing drive means (28) is rotatably connected to each other via a horizontal shaft (30).

A rake (31) is provided at the lower end of the rake beam (22), and a chain rack (32) having a chain attached thereto is provided in the center of the front surface over substantially the entire length thereof. A pinion (33) that meshes with the chain rack (32) is rotatably provided in the rake beam support guide (21) via a horizontal shaft (34), and is outside the horizontal shaft (34). A transmission chain gear (35) is fixed to the end.

Reference numeral (36) is a rake beam lifting / lowering drive means, which includes a drive motor (38) mounted on a motor base (37) protruding from the front surface of the rake beam support guide base (21), and the motor output shaft. The drive chain gear (40) fixed to (39), the transmission chain gear (35), the transmission chain (35) wound around the horizontal shaft (34) and both chain gears (35), (40). 41) and the distance from the lower limit of the rake (31) (the position shown by the solid line in FIGS. 1 and 4) to the lower part of the front apron (10) shown by the chain double-dashed line (131) in FIG. Is designed to go up and down.

Then, the rake (31) further drops dust on the chute (11) by swinging the rake support arm (14) rearward from the rising limit (131) shown in FIG. Is moved to the upper limit position. The front surface of the front apron (10) is an arc surface centered on the center of the horizontal axis (15) which is the center of rotation of the arm (14), and the tip of the rake (31) is the front surface of the front apron. It slides on the front surface of (10) to scrape up dust.

Next, the operation of the embodiment of the present invention will be described. First, the drive motor (8) moves the traveling platform (6) to a desired position of the water inlet (2). At this time, the rake beam (22) is in the ascending limit (122) together with the rake (31), and the rake support arm (14) is in the retracting limit (114) as shown in FIG. Therefore, while the guide table (21) is tilted rearward by the rake opening / closing drive means (28) and the rake beam (22) is lowered by the drive means (36), the rake support arm (17) is moved by the arm drive means (17). 14) is tilted to the front limit and the rake (31) is positioned at the lower limit as shown by the chain double-dashed lines (231) and (331) in FIG. 4, and then the rake opening / closing drive means (28) is used. The frame support guide (21) is pushed forward to bring the tip of the rake (31) into contact with the front surface of the screen (4) to bring it into a closed state.

At this time, dust floating in front of the screen (4) is attracted by the rake (31). Therefore, the motor (38) of the rake beam elevating drive means (36) is operated to press the rake (31) against the screen (4) with an appropriate force to keep the rake beam (22) closed. By raising it, the dust on the front surface of the screen (4) is scraped up by the rake (31). Even if a large amount of dust is scraped up, the rake (31) is pressed against the screen (4) by the rake opening / closing drive means (28), so the rake (31) does not open, and the rake is in the middle of scratching. So dust doesn't fall.

When the tip of the rake (31) reaches the upper limit of the lower end of the front apron (10) as shown by the chain double-dashed line (131) in FIG. 4, the rake beam lifting drive means (36) stops. Then, the rake support arm (14) swings rearward about the horizontal axis (15) by the arm driving means (17), so that the tip of the rake (31) slides on the front apron (10). Then, when the dust is moved from the front apron (10) to a position (upper limit) where it is completely dropped onto the throwing chute (11), the rake support arm (14) is at the backward limit (two-dot chain line (114) in FIG. 4). Reach) and stop.

Then, the rake opening / closing drive means (28) tilts the rake beam support guide table (21) rearward to open the rake (31), and one cycle of dust removal work is completed. If the dust removing operation is repeated at the same place, the dust removing operation is performed in the above order. When the dust removal work for one screen (4) is completed, the traveling platform (6) is moved to the next intake port (2) in parallel with the screen (4), and the operation is performed in the same manner as described above. .

The present invention is not limited to the above-mentioned embodiment, but the design can be changed as appropriate. For example, the traveling platform can be a stationary type, and each drive means can employ a hydraulic cylinder device. Furthermore, the dust receiving hopper may employ a conveyor.

[0023]

[Effect of device]

 According to the present invention, as described above, a traveling mount is provided on a slab such as a dam intake, and a front apron is installed directly above the screen provided substantially perpendicular to the intake on the mount and the dust is removed. A receiving hopper is provided, and further, a base end of a rake support arm, which is substantially key-shaped in side view, is provided so as to be capable of swinging back and forth through a horizontal shaft, and a driving means for the arm is provided, and a front end of the arm is provided. Is equipped with a rake beam support guide so that it can be tilted up and down via a horizontal axis, and a rake opening / closing drive means is provided between the guide and the arm. The structure is simple and the beam driving means is provided, and the front surface of the front apron is an arc surface centered on the axis of the horizontal axis of the arm. The height of the stand can be significantly reduced, weight reduction and cost reduction are attempted, and even when there is a large amount of dirt scratched on, the rake is pressed against the screen by an appropriate pressing force by the rake opening / closing drive means. The dust does not open and the dust can be effectively scraped up, and the dust removal efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view showing an embodiment of the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a plan view of the same embodiment.

FIG. 4 is an operation explanatory diagram of the embodiment.

[Explanation of symbols] 2 Intake port 3 Slab 4 Screen 6 Traveling platform 10 Front apron 12 Dust receiving hopper 14 Rake support arm 15 Horizontal axis 17 Arm drive means 21 Rake beam support guide table 22 Rake beam 23 Guide roller 25 Horizontal axis 28 Rake open / close drive Means 31 rake 32 chain rack 33 pinion 35 transmission chain gear 36 rake beam lifting drive means 38 drive motor 40 drive chain gear 41 transmission chain

Claims (1)

[Scope of utility model registration request] 1. A traveling platform is provided on a slab such as a dam intake port, a front apron is provided directly above the screen provided substantially perpendicular to the intake port on the platform, and a dust hopper is provided. Furthermore, the base end of a rake support arm, which is substantially key-shaped when viewed from the side, is provided so as to be capable of swinging back and forth around a horizontal axis parallel to the screen surface, and a drive means for the arm is provided, and the front end of the arm is provided. A rake beam support guide is mounted so as to be tiltable by a horizontal axis parallel to the screen surface, and rake opening / closing drive means is provided between the guide and the arm. The rake beam support guide has a rake beam at the lower end. Is provided so as to be able to move up and down, and a drive means for the rake beam is provided on the guide base.
Furthermore, the dust remover characterized in that the front surface of the front apron is an arc surface centered on the axis of the horizontal axis of the arm.