JPS6031805A - Screen washing apparatus - Google Patents

Abstract

PURPOSE:To perfectly perform the washing-off of dusts adhered to the front surface of a screen by performing injection toward the corner parts of both side frames of the screen, by providing a nozzle, which is enabled in injection to directions oppositely inclined to each other, to a movable truck. CONSTITUTION:A truck 17 is run and washing water 48 is injected from nozzle support parts 16A, 16B directed to the running direction of said truck 7 to wash a screen 1 and dusts on the screen 1 are washed off into a pit 5. At this time, washing water 48 is naturally injected toward coner parts 3 corresponding to the side frame 2 provided to one side of the screen 1 and the corner parts 3 in said side is well washed. When the truck 7 runs to the screen of one side, now, the running direction thereof is reversed to perform the washing the other side end. Usually, dusts are easily adhered to the upper half part of the screen 1 and washed off by injecting washing water 48 from a pipe upper part 21 by opening and closing solenoid valves 24A, 24B.

Description

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

BACKGROUND ART In sewage treatment facilities, etc., in order to reduce the load on the facilities, garbage contained in sewage from settling areas is removed using screens.

FIG. 1 shows an example of such a screen (1). By the way, this screen (1) can sometimes become clogged, and as a countermeasure to this problem, a conventional method has been proposed in which a nozzle that can spray cleaning water in a direction perpendicular to the screen (1) is moved along this screen (1). has been done.

However, generally the screen (1) has side frames (2),
The above-mentioned conventional device has a problem in that the corners (3) of the side frame (2) are difficult to clean sufficiently.

There is also the problem that dirt adhering to the front of the screen is pushed to the back side, making it impossible to eliminate clogging.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it possible to sufficiently clean the corners of the screen, and also to reliably wash away the dust adhering to the front surface of the screen.

In order to achieve this object, the present invention provides a movable truck facing a screen provided in a waterway, and a pair of trucks capable of spraying cleaning water in oppositely inclined directions relative to the screen. It is equipped with a nozzle.

Therefore, both nozzles can spray cleaning water toward the corners of both side frames of the screen, which not only makes it possible to sufficiently clean these corners, but also sprays the cleaning water at an angle to clean the screen. - It is possible to prevent dirt adhering to the front surface of the tube from being pushed in, and it is possible to reliably wash away this dirt.

Examples of the present invention will be described below. Figures 2 to 8
In the figure, (1) is a screen provided in the waterway (4), (2) is its side frame, and (5) is a pit that receives garbage. On the other hand, above the screen (1), a pair of horizontal rails (6) are provided along the screen (1) so that the cart (7) can run thereon. The rail (6) is provided inside the horizontal channel material QO attached to the bracket (9) from the beam member (8). 01) is a trolley (7)
The axle receives power from a motor with a speed reducer (6) through a chain (to). C141 is a sprocket.

The truck (7) has a frame portion Q extending downward, and this frame portion (6) has a pair of first nozzle support portions (16A) and a second nozzle support portion (16B), respectively. are attached via nozzle position adjustment devices (17a) (17b). Each nozzle support part (16A) (16B) has a tubular nozzle body (G) arranged vertically along the screen (1), and a plurality of tube-shaped nozzle bodies (G) arranged in the length direction of the nozzle body (T). It is composed of a nozzle section H. Also, the nozzle body (g) is located at the upper part of the tube facing the upper half of the screen (1) by means of the partition wall. It is divided into a core and a tube lower part facing the lower half of the screen (1).

A first upper branch pipe (25A) is connected to the upper part of the pipe (c) in the first nozzle support part (16A) from the water supply hose via the first electromagnetic valve (24A), and this A first lower branch pipe (27A) is connected to the lower pipe part (2) of the first nozzle support part (16A) from a water supply hose via a first manual cock (26A). moreover,
A second upper branch pipe (25B) via a second solenoid valve (24B) and a second manual cock (
A second lower branch pipe (27B) is connected via the lower branch pipe (26B).

Figures 4 and 5 show the nozzle position adjustment device (t7a) (17
b) is shown in detail. Here, ) is a bracket fixed to the above-mentioned frame portion 0, and ) is welded to the support shaft. 2) is a turret pipe that can be rotated around the support shaft, and can be fixed to the bracket (C) at an appropriate rotational position with a bolt ($1). This turret pipe) is composed of a base (8) that fits onto the support shaft () and a pipe part (item) that protrudes from the base (a). The shaft (8@ is inserted. φ0 is the shaft (goods) under the appropriate amount of extraction.
This is a set screw for fixing the nozzle body (G) to the pipe part (8@).At the tip of the shaft, there is a two-piece pipe holder that can clamp the nozzle body (G) and can swing freely around the pin (A). The foundation is a fixture for turret pipes, which consists of a bracket (2) fixed to the frame (G), a lever (G) swingably attached to the bracket ■, and a lever operation. It has a bolt (41) for fixing the pipe part φ of the turret pipe.

As shown in Figures 2 to 8, each pair of nozzle position adjustment devices (ma) (tvb) are attached to both turret pipes).
The center of rotation (a) (see 7th) is the center of rotation of the screen (
1) are arranged in the same plane perpendicular to the plane.

In addition, in Figures 2+1 to 8, (4Φ is the trolley (7
), and is attached to a movable pulley (■) that can be moved along a guide rail (■) parallel to the rail (6), together with a water supply hose (). Also, (4Φ is a warning light indicating that this device is in operation.

As shown in FIGS. 6(a) to (C), the screen (1)
If the types of screens are different, it is necessary to determine the optimum angle by experiment by changing the injection angle of the cleaning water from the direction (4'/) perpendicular to the screen (1) for each type. . In addition, the distance from the nozzle part Ql to the cleaning water collision position (a) on the screen (1) has an optimum value (for example, about 80 cm) depending on the jet pattern of the nozzle part, and Despite the changes,
This distance must always be kept constant. Based on these points, the positions of the nozzle supports (16A) (16B) are adjusted. In addition, Fig. 6 (a) to (C) are shown in the direction perpendicular to the screen (1) (spray angle from 4 forces is 80 degrees, 4
Examples are shown in which the angle is changed to 5 degrees and 60 degrees.

A specific method for adjusting the position of the nozzle support parts (16A) (16B) will be explained based on FIG. 7. That is, when changing the injection angle while keeping the distance from the nozzle portion Q1 to the collision position (g) constant as described above, a corresponding nozzle position exists. Therefore, the turret pipe (shown in Figures 4 to 6) is rotated around the rotation center (c), and fixed to the bracket (with the pipe part (material) facing the nozzle position (a)). , At the same time, the vibration of the shaft (material) is suppressed by the pipe part (material), the nozzle body (to) is aligned with the predetermined nozzle position, and the shaft (I is fixed to the pipe part (material). At this time, the above-mentioned There is a pair of position adjustment devices (17a) (17b) for each nozzle support part (16A) (16B) as shown in FIG. Therefore, the degree of freedom of this swinging part prevents unreasonable force from acting on the nozzle.Once the nozzle support parts (16A) (16B) are set at the predetermined nozzle position φΦ, the pipe holder The nozzle body (G) is rotated within the nozzle and fixed so that it can spray at a predetermined angle.

f, x, nozzle part (11
are arranged in a staggered manner, and the amount of protrusion from the nozzle body (g) is varied to keep the distance to the collision point (49) strictly constant.Also, in Fig. 7, the injection Although the angles are 80 degrees, 45 degrees, and 60 degrees, they can be adjusted to any other suitable angle.Furthermore, the first and second nozzle supports (16A) (1
6B) are set so that their nozzle sections face each other. In addition, the position adjustment work of the nozzle support parts (16A) (16B) as described above need only be performed when the screen (1) and the main cleaning device are completed.
Once the appropriate spray angle is set depending on the type of screen (1), etc., no subsequent adjustment is necessary.

Explain the cleaning work. The trolley (7) is run, and the nozzle supports (16A) (16B) directed in the running direction spray water into the cleaning water. For example, when the truck (7) is run from the left side to the right side in FIG. 1, the truck (7) also runs to the right in FIG. 8, and at this time,
The first solenoid valve (24A) is opened and the second solenoid valve (24B) is closed. Then, nozzle part a
1 is the first one disposed toward the running direction of the truck (7).
Washing water (48) is sprayed from the nozzle support part (16A) of the screen (1) to wash the screen (1). Screen (1)
The dirt on the top is washed off to the bit (5). At this time, in particular, the white washing water (g) will be sprayed at the corner (3) corresponding to the right side frame (2) of the screen (1) in Figure 1, so this right corner Part (3) is well cleaned.

Once the cart (7) has traveled to the rightmost screen, the direction of travel is reversed and it is caused to travel to the left in FIGS. 1 and 8. This time, the first solenoid valve (24A) is closed, the second solenoid valve (24B) is opened, and the cleaning water (c) is also flowed from the second nozzle support part (16B) in the traveling direction of the truck (7). inject. In this case, the screen (1
) is cleaned well.

In this way, the nozzle supports (16A) (16B) facing the traveling direction of the truck (7) are selectively operated,
) back and forth an appropriate number of times to complete cleaning. Note that, if necessary, both the electromagnetic valves (24A) (24B) may be opened at the same time to inject the cleaning water (A) from both the nozzle supports (16A) (16B) at the same time. Further, the nozzle portions H of both nozzle support portions (16A) (1aB) may be arranged back to back to each other, and this can be appropriately selected when adjusting the nozzle position described above.

Note that dust usually tends to adhere to the upper half of the screen (1), and when the cleaning water ■ is sprayed from the upper part of the pipe (c) by opening and closing the solenoid valves (24A) and (24B) mentioned above, this upper half Mostly, dirt adhering to the area is washed away.

If dirt adheres to the lower half of the screen (1), operate the manual cocks (26A) (26B) to spray cleaning water (c) from the lower part of the pipe (2) to clean it. do it. In this case, only manual opening/closing control is possible, and switching injection by reciprocating the truck (7) as described above is not possible.

As described above, according to the present invention, cleaning water can be jetted toward the corners of both side frames of the screen using both nozzles, and not only can these corners be sufficiently cleaned, but also the cleaning water can be sprayed toward the corners of both side frames of the screen. By spraying in an inclined state, it is possible to prevent dirt adhering to the front surface of the screen from being pushed in, and it is possible to reliably wash away the dirt.

[Brief explanation of drawings]

1 is a diagram illustrating a screen, FIG. 2 is a diagram illustrating an embodiment of the present invention, FIG. 8 is a left side view thereof, FIG. 4 is a plan view showing an enlarged nozzle position adjustment device, and FIG. Figure 6 is a partially cutaway front view of the same, Figure 6 is a diagram showing changes in the injection angle,
FIG. 7 is an explanatory diagram of a nozzle position adjustment method. (1)...Screen, (4)...Waterway, (7)...
... Cart, (16A) ... First nozzle support part, (1
6B)...Second nozzle support part, (to)...Washing water agent Yoshihiro Morimoto\Figure 1

Claims (1)

[Claims] L. A movable truck is provided opposite to a screen provided in a waterway, and this truck is provided with a pair of nozzles capable of spraying cleaning water in directions tilted in opposite directions with respect to the screen. screen cleaning equipment.