JPS6329568B2 - - 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., garbage that has passed through a screen from a settling basin is removed.

FIG. 1 shows an example of such a screen 1. By the way, the screen 1 may become clogged, and as a countermeasure to this problem, it has been proposed to move the cleaning water injection nozzle facing the screen 1 along the screen 1. However, generally the screen 1 has side frames 2,
The above-mentioned conventional device has a problem in that the corner portion 3 near the side frame 2 is difficult to be sufficiently cleaned.

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 guide plate attached to the idling shaft and extending along the moving direction of the cart is erected at an appropriate distance from the idling shaft, and the distance from the idling shaft is longer than the distance from the idling shaft to the guide plate. A lever having an adjustable idler roller is attached to the opposite side of the nozzle on the idler shaft, and the lever is tilted with respect to the moving direction of the truck due to the contact of the idler roller with the guide plate as the truck moves. and a tilting direction changer for changing the tilting direction of the lever by abutting the nozzle at a position away from both ends of the guide plate based on the movement of the trolley. Each device is provided separately.

Therefore, the spray direction of the nozzle can be tilted with respect to the screen, and the tilt direction can be alternately reversed by the reciprocating movement of the cart, so the spray direction of the nozzle can be directed toward the corner of the screen. This makes it possible to thoroughly clean this corner.

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 provided inside a horizontal channel member 9 attached to a bracket 8 from a beam member 7. Reference numeral 10 denotes an axle of the truck 6, to which power is transmitted through a chain 12 from a motor 11 with a reduction gear. 13 is a sprocket.

A vertical idling shaft 15 is attached to the cart 6 via a bearing 14, and a bracket 16 fixed to the idling shaft 15 has a nozzle 19 for spraying cleaning water 18 toward the screen 1. is installed. That is, numeral 20 designates a nozzle unit having each pair of nozzles 19, and in this embodiment, three sets of nozzles are attached to the bracket 16 so that the vertical attachment angle can be adjusted. Although not shown, each nozzle unit 20 includes:
The cleaning water supply piping is connected.

Reference numeral 21 denotes a hanging side frame of the truck 6, on which a terminal box 22 and a warning light 23 indicating that the device is in operation are attached.

As shown in FIGS. 2 and 3, a horizontal lever 25 capable of rotating the idle shaft 15 is attached to the upper end 24 of the idle shaft 15 on the opposite side of the nozzle 19. An idling roller 26 is attached to the tip of the roller. A turnbuckle 27 is incorporated into the lever 25, so that the distance from the idle shaft 15 to the idle roller 26 can be adjusted. On the other hand, on the channel member 9 closer to the idling shaft 15, a guide plate 28 on which the idling roller 26 can come into contact is erected in the longitudinal direction along the rail 5. Note that, as shown in FIG. 3, the ends 29 on both sides of the guide plate 28
It is curved away from the

When the turnbuckle 27 is operated to make the distance from the idler shaft 15 to the tip of the idler roller 26 longer than the distance from the idler shaft 15 to the guide plate 28, the distance of the idler roller 26 due to the movement of the cart 6 is increased. By contacting the guide plate 28, the lever 25 is inclined with respect to the moving direction 30 of the truck 6, as shown in FIG. Along with this, nozzle 19
The injection direction is also inclined, and the degree of this inclination can be adjusted by a turnbuckle 27. In addition,
Reference numeral 31 denotes a gate-shaped lever inclination regulating device provided on the carriage 6, and the lever 25 can be tilted only in the inner range of this regulating device 31. 32 is a pin hole, and if you want to orient the nozzle 19 at right angles to the screen 1, shorten the length of the lever 25 so that the idle roller 26 does not come into contact with the guide plate 28, and The lever 25 is fixed and used with a pin passing through the hole 32.

An inclination direction changing device 33 for returning the inclination of the lever 25 is mounted on the channel member 9 that has come off the end 29 of the guide plate 28. This tilt direction changing device 33 includes a bracket 34 fixed to the channel material 9, a contact member 36 with a stopper 35 that can be inserted into the bracket 34 in the moving direction 30 of the truck 6 and come into contact with the nozzle 19.
It has a spring 37 that urges the contact member 36 toward the nozzle 19.

Explain the cleaning work. The turnbuckle 27 is operated to adjust the distance from the idling shaft 15 to the idling roller 26, and the length is appropriately adjusted and set so that the jetting direction of the nozzle 19 is inclined with respect to the guide plate 28. Next, the cart 6 is caused to travel, and the cleaning water 18 is injected from the nozzle 19. Then, the third
As shown in the figure, the nozzle 19 is
This means that the cleaning water is 18
The screen 1 is cleaned of clogs and the like while being sprayed obliquely to the screen 1. This makes it possible to effectively clean the corners 3 in particular.

The screen 1 where the trolley 6 moves and is located at the end
When cleaning is completed, the nozzle 19 approaches the tilt direction changing device 33. That is, first of all, Figure 4a
As shown in FIG.
5, the nozzle 19 provided at the tip of the lever 25 in the inclined state comes into close contact with the abutting member 36, and pushes the abutting member 36 against the biasing force of the spring 37. At this time, as shown in b, the idle shaft 15
has reached the end position 38, and the idle roller 26 is in a state where it can be removed from the end 29 of the guide plate 28. Here, the contact member 36 pushes back the nozzle 19 due to the action of the spring 37, causing the nozzle 19 and the lever 25 to pivot around the free rotation shaft 15. Then, as shown in c and FIG. 3, the nozzle 19
In the end position 38, the lever 25 and the lever 25 are oriented approximately perpendicular to the screen 1.

Next, the trolley 6 is made to travel in the opposite direction. Then, the idle roller 26 comes into contact with the end 29 of the guide plate 28, and the nozzle 19 is tilted in the opposite direction. When this inclination reaches a certain level, the idle roller 26 comes into contact with the guide plate 28 and follows the movement of the carriage 6, and the screen 1 is cleaned again. In this case, the corner 3 (not shown) of the screen 1 shown in FIG. 3 can be effectively cleaned.

Note that a tilt direction changing device 33 similar to the above is also provided near the other end (not shown) of the guide plate 28 corresponding to the screen (not shown) located at the other end. , nozzle 19
The jet direction can be changed alternately. In this way, cleaning is completed by reciprocating the cart 6 an appropriate number of times.

As described above, according to the present invention, the jetting direction of the nozzle can be tilted with respect to the screen, and the tilting direction can be alternately reversed by the reciprocating motion of the cart. It can also be directed to the corners of the room, making it possible to thoroughly clean these corners.

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating a screen, FIG. 2 is a diagram illustrating an embodiment of the present invention, and FIG. 3 is a plan view thereof.
FIGS. 4a to 4c are diagrams showing a tilt direction change state. 1...Screen, 4...Waterway, 6...Dolly, 15...
Idle shaft, 18...Washing water, 19...Nozzle, 25...Lever, 26...Idle roller, 28...Guide plate, 33...Inclination direction changing device.

Claims (1)

[Claims] 1. A vertically idling shaft is attached to a horizontally movable cart facing a screen provided in a waterway, and a nozzle that injects cleaning water toward the screen is attached to the idling shaft, and the cart is A lever having an idling roller whose distance from the idling axis can be adjusted to be longer than the distance from the idling axis to the guide plate, with a guide plate along the moving direction set upright at an appropriate distance from the idling axis. is attached to the opposite side of the nozzle on the idling shaft, and as the idling roller comes into contact with the guide plate as the cart moves, the lever is tilted with respect to the direction of movement of the cart, thereby swinging the jetting direction of the nozzle. The present invention is further characterized in that a tilting direction changing device is provided at a position apart from both ends of the guide plate to change the tilting direction of the lever by contact with a nozzle based on the movement of the trolley. Screen cleaning equipment.