JPH0565659B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for collecting and removing sludge, and more specifically, it relates to a device for collecting and removing sludge, and more specifically, it relates to a device for collecting and removing sludge, and more specifically, it is used to collect and remove soft sludge, etc., which contains a large amount of water and is deposited on riverbeds, etc. This invention relates to a device for collection and removal.

[Conventional technology]

Sludge deposited on the bottom of rivers, marshes, bays, etc. is generally called sludge. Sludge contains a large amount of water and is soft, so it easily spreads into the water, and if it contains large amounts of organic matter from factory wastewater or industrial waste, it gives off a bad odor.

As a method for collecting and removing this sludge from riverbeds, etc., a method using a clamshell bucket is generally used. A clamshell bucket cart is a bucket cart that consists of two side plates that are pivotally supported so that they can swing freely in the vertical direction.By driving the two side plates with a hydraulic cylinder, it is capable of digging and grasping excavated objects. This is to raise the level. This clamshell bucket is attached to the end of the arm of a power shovel, etc., and lowered from the barge into the sludge at the riverbed with the side plates open, and then excavated with the side plates closed and the excavated sludge removed. It is housed in a bucket formed by two closed side plates. After storing the sludge, the clamshell bucket is lifted above the water surface and moved to a predetermined collection position, and then the side plate is opened and the collected sludge is released into the storage container.

[Problem to be solved by the invention]

Even when the two side plates of the clamshell bucket are closed, the upper part of the bucket is open, so some of the sludge spills or leaks from the bucket when it is pulled up from the riverbed or the like. Spilled or leaked sludge spreads into the water and contaminates river water, etc., and if it contains a large amount of organic matter, it can emit a terrible odor and harm the surrounding environment.

To prevent this, methods are used to surround the work area with floats, etc. to prevent sludge from spreading into river water, etc., but sludge spreads over a wide area from the river bottom to the water surface. Therefore, it cannot be prevented simply by floating a float on the water surface, and therefore it is necessary to shield the water from the surface to a considerable depth with a shielding membrane, etc., which is a great burden on the work. Ta. In addition, when moving the clam shell bucket from the water surface to the designated collection container, the sludge that spills from the bucket adheres to the machine, etc., and is scattered around the work area, making it difficult to maintain and manage the machine. This was not desirable in terms of worker hygiene.

This invention was proposed in view of the above-mentioned problems, and prevents sludge from dispersing in water, adhering to machinery, etc., and scattering around the workplace during collection and removal work of sludge and other sludge. The purpose of this is to preserve the surrounding environment, improve the work environment, and reduce work costs.

[Means to solve the problem]

In order to solve the above problems, the present invention uses the following means.

That is, the sludge collection and removal device includes a connecting arm, a mud collecting bucket, a suction plate, a first cylinder, and a second cylinder, and the connecting arm includes:
The rear end is attached to the tip of the arm of the work vehicle, and the mud collecting bucket is rotatably attached to the tip of the connecting arm, and the cross-sectional shape of the bottom surface forms an arc in the direction of rotation. The mud-absorbing plate has a discharge port on the plate surface having an area that can close at least the opening of the mud-collecting bucket, and a flexible pipe is connected to the discharge port via a check valve. It is rotatably attached to a rotating shaft located at the center of the radius of the arc formed by the bottom of the mud collecting bucket, and the tip and both sides are connected to the mud collecting bucket. The first cylinder rotates by sliding on the inner wall of the bucket, and the first cylinder rotates the mud collecting bucket in the longitudinal direction of the connecting arm by expanding and contracting. By expanding and contracting, the mud absorbing plate is placed on the same plane as the rotating surface of the mud collecting bucket, and by extending, the mud absorbing plate is rotated toward the mud collecting bucket.

[Effect]

The sludge collection and removal device is attached to an arm of a working vehicle by a connecting arm, and is lowered into the sludge with the first cylinder and the second cylinder contracted. Thereafter, when the first cylinder is extended, the sludge collection bucket rotates, and the sludge is accommodated in the bucket. Next, when the second cylinder is extended, the mud absorbing plate rotates around the rotation axis, is introduced into the opening of the mud collecting bucket, and closes the opening. The rotating shaft is located at the center of the radius of the arc formed by the bottom of the mud collecting bucket, so by rotating around the rotating shaft, the mud absorbing plate can be rotated at the tip of the mud collecting bucket. The front end and both sides are always rotated in the sludge bucket, and the tip and both sides are always in sliding contact with the inner wall of the sludge bucket, sealing the collected sludge inside the sludge bucket and compressing it. do. The compressed sludge is discharged from a discharge port provided on the surface of the suction plate to a flexible pipe via a check valve.
The sludge discharged into the flexible pipe cannot flow back into the sludge collection bucket because of the check valve, and therefore,
By repeating the above collection and compression operations, the sludge is forced through the flexible pipe and collected and removed.

〔Example〕

An embodiment of the present invention will be described based on the drawings.

Figure 1 shows a sludge collection and removal device A according to the present invention.
FIG. In the figure, 1 is a connecting arm,
It is attached to the tip of an arm of a working vehicle, for example, a power shovel (not shown), via a connection bracket 2 connected to the rear end. A first bracket 3 and a second bracket 4 are respectively fixed to the center of the connecting arm 1 in opposite directions with the connecting arm 1 in between. Second cylinders 6 are each swingably mounted on the bracket 4. A mud collection bucket 8 is rotatably attached to the tip of the connecting arm 1 via a rotation shaft 7. The bottom surface 9 of the mud collecting bucket 8 has an arcuate cross section, and is open at the front to form an opening 10. 11 is
A third bracket is fixed to the rear part of the mud collecting bucket 8, and the rod tip of the first cylinder 5 is swingably attached to the mud collecting bucket 8 via a pin 12 that is mounted on the third bracket 11. be done.

Reference numeral 15 denotes a mud absorbing plate, and in this embodiment, the mud absorbing plate 15 is mounted coaxially with the mud collecting bucket 8, that is, rotatably attached to the rotation shaft 7. Therefore, the position of the rotation shaft 7 is made to coincide with the radial center of the arc formed by the bottom surface 9 of the mud collecting bucket 8. A fourth bracket 16 having a pin 17 mounted thereon is fixed to the upper surface of the mud suction plate 15, and the rod tip of the second cylinder 6 is swingably attached to the mud suction plate 15 via the pin 17.
The mud absorbing plate 15 has an area that roughly matches the area of the opening 10 of the mud collecting bucket 8, and is rotated by the second cylinder 6 and introduced into the mud collecting bucket 8. FIG. 2A is a plan view of the mud absorbing plate 15, and FIG. 2B is a side view. In the same figure, 18 is the mud absorbing plate 1
This is a discharge port opened in an inclined surface 19 formed at the center of the plate surface of 5, and a thin flange 20 is fixed to the outer periphery of the discharge port. Further, on both sides of the inclined surface 19, holes 21 having a diameter smaller than that of the discharge port 18 are provided.
Similarly, a thin flange 22 is fixed to the outer periphery of 1. However, the hole 21 is always closed with a lid. 14 is a flexible tube whose one end is connected to the discharge port 18 via the check valve 13 fastened to the thin flange 20, and the other end of the flexible tube 14 is connected to a recovery tank (not shown). I understand.

Further, seal fastening fittings 26, 26, 26 having a U-shaped cross section are fixed to the distal end surface 24 and both side surfaces 25, 25 of the mud absorption plate 15.
An appropriate number of bolt holes 27 are bored in the longitudinal direction of the bolt.

The seal 28 is tightened by the seal 2 disposed inscribed in the seal fastening fitting 26, as shown in FIG.
This is done by placing a presser plate on the inside of the presser plate 29 and tightening it with bolts 30 from the outside of the presser plate 29. At this time, the seal 28 is arranged so that both sides of the seal 28 slightly protrude from the end surface of the seal fastening fitting 26. As mentioned above, the mud absorbing plate 15 is rotated by the second cylinder 6 and introduced into the mud collecting bucket 8, but at this time, the tip surface 24 of the mud absorbing plate 15 and both side surfaces 25, 25 is in sliding contact with the bottom surface 9 and both side surfaces of the mud collecting bucket 8 by the seal 28, thereby sealing the inside of the mud collecting bucket 8.

The configuration of this embodiment has been described above. Next, the operating method thereof will be explained.

After attaching the sludge collection and removal device A to the end of the arm of a power shovel (not shown), with the first cylinder 5 and the second cylinder 6 contracted, it is installed on a barge or from land to the bottom of a river, etc. Drop into sludge. While pressing the connecting arm 1 from above with the arm of the power shovel, press the first cylinder 5.
When the mud collecting bucket 8 is extended, the mud collecting bucket 8 rotates, and the sludge is accommodated in the mud collecting bucket 8 through the opening 10. After the sludge has been stored, the second cylinder 6 is extended and the mud absorbing plate 15 is rotated toward the mud collection bucket 8. Note that the first cylinder 5 and
The second cylinder 6 is connected via piping (not shown) to a hydraulic pressure generation source (not shown) installed on the main body side of the power shovel.

When the mud absorption plate 15 is rotated and introduced into the opening 10 of the mud collection bucket 8, the sludge is removed from the mud collection bucket 8.
sealed inside. When the mud absorbing plate 15 or the mud absorbing plate 15 and the mud collecting bucket 8 are further rotated, the volume of the sludge collecting portion of the mud collecting bucket 8 is reduced, so that the sludge is compressed within the mud collecting bucket 8.
It is pushed out from the discharge port 18 through the check valve 13 to the flexible tube 14 side. Because of the check valve 13, the sludge pushed out into the flexible pipe 14 cannot flow back into the mud collection bucket 8. Therefore, by repeating the above operation, the sludge can be pushed out into the flexible pipe. 14 to a recovery tank (not shown).

In addition, if the distance between the collection tank and the sludge removal device A is far, or if the collection tank is installed at a high place, or if the viscosity of the sludge is high, etc. The compressive force generated by the rotation of the mud plate 15 and the mud collection bucket 8 alone may not provide sufficient pumping power to completely pump the sludge.

In such a case, the pumping force is strengthened by absorbing the sludge from the flexible tube 14 side using a suction pump or the like (not shown).

Alternatively, the pumping force can be strengthened by opening the hole 21 formed in the mud absorbing plate 15, connecting a flexible pipe to the hole 21, and sending compressed air from the outside into the mud collecting bucket 8. .

Further, when the viscosity of the sludge is high, water or the like is made to flow into the sludge bucket 8 in the same manner as described above to lower the viscosity of the sludge.

Of course, the above methods may be used in combination.

In this embodiment, the rotation shaft 7 of the mud collecting bucket 8 is
Although the rotating shafts 7 of the mud absorbing plate 15 and the mud absorbing plate 15 are made to be the same axis, the rotating shafts may be separate. Further, the sludge compression operation may be performed underwater, or may be performed after the sludge recovery Kochi A is lifted above the water surface.

Although the above description has been made with the collection and removal of sludge deposited on riverbeds etc. in mind, the application of the sludge collection and removal device according to the present invention is not limited to this.
It is broadly applicable to the collection and removal of sludge in general, for example, the collection and removal of sludge in city water supplies.

[Effect of idea]

The following effects can be obtained by the present invention.

Since the sludge contained in the sludge collection bucket is sealed by the sludge absorption plate, it does not spill or leak from the bucket. Therefore, it is possible to prevent sludge from dispersing in the water, adhering to machinery, etc., scattering around the work area, etc., which have been problems in the past, caused by sludge collection work.

The sludge collection and removal device according to the present invention can pump sludge to the collection container while remaining submerged in water, so there is no need to lift the sludge to the water surface each time the sludge is stored in the bucket, improving work efficiency. improves.

Since there is no need to surround the work position with a float or the like, work is easy and work costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view of the sludge collection and removal equipment;
Figure A is a plan view of the mud absorbing plate, and Figure 2B is a side view of the mud absorbing plate. Moreover, FIG. 3 is a cross-sectional view showing the state of sliding contact between the end face of the mud absorbing plate and the inner wall of the mud collecting bucket. 1... Connection arm, 5... First cylinder, 6...
...Second cylinder, 7... Rotating shaft, 8... Sludge collecting bucket, 9... Bottom of mud collecting bucket, 10... Opening, 13... Check valve, 14... Flexible pipe, 15... …
Mud absorption plate, 18...Discharge port, 24...Tip surface, 25
……side.

Claims (1)

[Claims] 1. A connecting arm, a mud collecting bucket, a mud absorbing plate,
The sludge collection and removal device has a first cylinder and a second cylinder, wherein the connecting arm has its rear end attached to the tip of the arm of a work vehicle, and the sludge collecting bucket has a rear end attached to the tip of the arm of a work vehicle. It is rotatably attached to the tip of the arm, and the cross-sectional shape of the bottom surface forms an arc in the direction of rotation, and the mud suction plate has an area that can at least close the opening of the mud collection bucket. A discharge port is provided on a plate surface having a diameter, and a flexible pipe is connected to the discharge port via a check valve.
and is rotatably mounted on a rotating shaft located at the center of the radius of the arc formed by the bottom of the mud collecting bucket,
The first cylinder rotates with its tip end surface and both side surfaces in sliding contact with the inner wall of the mud collecting bucket, and the first cylinder expands and contracts to move the mud collecting bucket in the longitudinal direction of the connecting arm. The second cylinder expands and contracts to place the mud absorbing plate on the same plane as the rotating surface of the mud collecting bucket, and by extending it moves the mud collecting plate to the same plane as the rotating surface of the mud collecting bucket. A sludge collection and removal device characterized in that it rotates toward the bucket side.