JPS6329567B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device for a screen installed in a waterway.

In order to reduce the load on sewage treatment facilities, etc., coarse garbage that has passed through screens from settling basins is removed. 1st
The figure shows an example of such a screen 1. By the way, this screen 1 may become clogged, and as a countermeasure to this problem, it has been proposed to move the cleaning water spray nozzle facing the screen 1 along the screen 1.
However, the screen 1 generally has a side frame 2, and the above-mentioned conventional screen has a problem in that the corner 3 near the side frame 2 is difficult to clean sufficiently.

Therefore, an object of the present invention is to enable the corners of the screen to be sufficiently cleaned.

In order to achieve this object, the present invention has a vertically movable shaft attached to a horizontally movable cart facing a screen provided in a waterway, and a nozzle for spraying cleaning water toward the screen. A lever is attached to an idling shaft and has an idling roller at its tip, and is engageable with the idling roller and has a curved portion laterally with respect to the moving direction of the cart. It is equipped with a guide rail.

Therefore, as the cart moves, the free-rotating roller enters the curved part, rotating the vertical axis, and swinging the jet direction of the nozzle toward the corner of the screen. It can be washed easily.

Hereinafter, one embodiment of the present invention will be described based on the drawings. In FIG. 2, 1 is a screen provided in the waterway 4, and 2 is its side frame. On the other hand, at an upper position on the upstream side of the screen 1, a pair of horizontal rails 5 are provided along the screen 1 so that a truck 6 can run thereon.
The rail 5 is attached to a bracket 8 from a beam member 7. Reference numeral 9 denotes an axle of the truck 6, to which power is transmitted through a chain 11 from a motor 10 with a reduction gear. 12 is a sprocket.

A vertical idling shaft 14 is attached to the cart 6 via a bearing 13, and a bracket 15 fixed to the idling shaft 14 has a nozzle 17 for spraying cleaning water 16 toward the screen 1. is installed. That is, 18 is a nozzle unit having each pair of nozzles 17, and in this embodiment, three sets of nozzles are attached to the bracket 15 so that the vertical attachment angle can be adjusted. Although not shown, each nozzle unit 18 includes:
The cleaning water supply piping is connected.

Reference numeral 19 denotes a hanging side frame of the truck 6, on which a terminal box 20 and a warning light 21 indicating that the device is in operation are attached.

As shown in FIG. 3, the upper end 22 of the idling shaft 14
One end of the horizontal lever 23 is fixed to the
An idle roller 24 is attached to the other end of the lever 23. In FIG. 2, a hook-shaped guide rail 25 with which an idling roller 24 engages is attached to the beam member 7. As shown in FIG. As shown in FIG. 4, this guide rail 25 is provided to match the movement path 26 of the free rotating shaft 14 as the cart 6 moves, and is provided at a suitable position in the direction of movement of the cart 6 (i.e., along the movement path). 26), a lateral curved portion 27 is formed.

As described above, the idle shaft 14 moves along the movement path 26, and the idle roller 24 moves along the guide rail 25.
Since the nozzle 17 moves while being engaged with the nozzle 17, the free rotation shaft 14 is rotated in the curved portion 27, and it becomes possible to swing the injection direction of the nozzle 17. In addition, the idle roller 24
When the nozzle 17 is located at a location other than the curved portion 27, the nozzle 17 is oriented in a direction perpendicular to the screen 1.

Therefore, by forming the curved portion 27 corresponding to the corner 3 of the screen 1, it becomes possible to direct the spray direction of the nozzle 17 toward the corner 3. Therefore, as shown in FIG. 4, the curved portion 27A corresponding to the corner 3 of the side frame 2A at one end of the screen 1 is curved in the direction away from the screen 1, and the curved portion 27A corresponding to the corner 3 of the side frame 2B at the other end The corresponding curved portion 27B is curved in the direction approaching the screen 1, and the side frames 2A,
It is necessary to reverse the deflection of the jet direction of the nozzle 17 in the 2B section.

Explain the cleaning work. The trolley 6 is run and the cleaning water 16 is sprayed from the nozzle 17 to clean the screen 1.
to clean the screen 1 from clogging. At the curved portion 27, the idle roller 24 comes off the moving path 26, rotates the idle shaft 14 via the lever 23, and the nozzle 17 is directed toward the corner 3 to effectively clean the corner 3. I will do it. Cleaning is completed by reciprocating the trolley 6 an appropriate number of times.

Note that, if necessary, a curved portion 27 may be formed at a location other than the corner portion 3 to swing the jetting direction of the nozzle 17 as appropriate.

As described above, according to the present invention, the vertical axis can be rotated by the entry of the idle roller into the curved part as the cart moves, and the jetting direction of the nozzle can be swung toward the corner of the screen. , this corner can be sufficiently cleaned.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating a screen, FIG. 2 is a diagram illustrating an embodiment of the present invention, FIG. 3 is an enlarged diagram of the main part thereof, and FIG. 4 is a diagram illustrating the movement of a nozzle. . 1...Screen, 4...Waterway, 6...Dolly, 14...
Idle shaft, 17... Nozzle, 23... Lever, 24... Idle roller, 25... Guide rail, 27, 27A, 2
7B...Curved part.

Claims (1)

[Claims] 1 A vertical idler shaft is attached to a horizontally movable trolley facing a screen provided in a waterway, a nozzle that sprays cleaning water toward the screen is attached to the idler shaft, and an idler is attached to the tip of the idler shaft. attaching a lever provided with a rolling roller to the free rotating shaft;
A guide rail with which the idler roller can engage and has a curved portion laterally with respect to the moving direction of the truck is provided, and as the idler roller enters the curved portion as the truck moves, the vertical 1. A screen cleaning device characterized in that a shaft is rotated to swing the jetting direction of the nozzle.