JPH0339869B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention applies to rivers, irrigation channels, or flowing lakes and marshes (abbreviated as rivers, etc. in this specification).
This relates to a suction cleaning method for submerged aquatic weeds that have grown unnecessarily in the water, and a suction cleaning vessel suitable for the purpose. To provide a cleaning method and a cleaning boat that are extremely effective for removing submerged aquatic weeds that take root on the bottom and cleaning rivers, etc.

(Background of the Invention) Submersible aquatic weeds that breed in water, such as staghorn spider and Canada weed, breed abnormally from spring to autumn due to eutrophication of rivers, etc., clogging irrigation channels and causing damage to outboard motor screws. They have become a serious social problem because they can become entangled and cause trouble to ships, become entangled in fishing nets and cause problems in fisheries, obstruct the flow of rivers, and impede the beautification of rivers.

Therefore, it is necessary to prevent the eutrophication of rivers, etc., or to remove such submerged aquatic weeds at the early stage of their reproduction, in order to prevent the various pollution and negative effects mentioned above. The current situation is that sufficient monitoring is not carried out in rivers, etc., causing abnormal proliferation of submerged aquatic weeds, and it is difficult to take measures to remove them.

(Conventional technology and its disadvantages) Conventionally, to remove submerged aquatic weeds that have grown in this way, workers use rakes to collect them on board or on land, but this method is extremely inefficient. It had the disadvantage of being efficient.

There is also a method of mechanically cutting submerged aquatic weeds slightly below the water surface using a rotating blade, but this method leaves the roots of submerged aquatic weeds behind, so it is only a temporary measure. The drawback was that once aquatic weeds grew, the same work had to be repeated over and over again.

As a solution to these shortcomings, the
- There is a cleaning method and a cleaning boat disclosed in No. 46835.

As shown in FIGS. 11 and 12, this previously disclosed cleaning boat consists of a hull 51 not equipped with a rotary propeller and an underwater floating body 53 connected to the hull 51 via a coupling 52. is equipped with an engine 54, a self-supplying pump 55, and a suction pump 56, and the drive shafts of these respective devices are connected and integrated via a connecting shaft 57, and a suction pipe is connected to the suction path of the suction pump 56. 58 are connected, and this suction pipe 58 is connected to the hull 51.
It is supported by a suction port adjustment fitting 60 attached to the tip of a suction hose 59 installed in the front, an arm 61 that supports this suction port adjustment fitting 60, and a controller 62 consisting of a hydraulic cylinder that supports this arm 61. And a discharge pipe 63 is connected to the discharge path of the suction pump 56,
This discharge pipe 63 extends above the underwater floating body 53 connected to the rear of the hull 51, and the underwater floating body 53 is configured in a raft shape with a base plate 65 installed on a float 64. Pillar 6 erected on
or discharge pipe 6 rotatably attached to 6
This is a suction cleaning boat for aquatic weeds, which is constructed such that a swash plate 67 directly attached to the discharge side of the pipe 63 comes into contact with the discharge pipe 63 at a required distance.

This suction cleaning boat for aquatic weeds having such a configuration cleans aquatic weeds in the following manner.

By the operation of the suction pump 56, aquatic weeds growing in the water are suctioned from the suction port 68 at the end of the suction hose 59, and the suctioned aquatic weeds are transferred to the suction hose 59 and the suction pipe 58.
The water is discharged from the rear end of the discharge pipe 63 through the discharge pipe 63 so as to collide with the swash plate 67 together with water.

The aquatic weeds that collide with the swash plate 67 and fall are deposited on the underwater floating body 53, and by arbitrarily changing the vertical angle of the swash plate 67 and the inclination angle with respect to the left and right, the hull 51 and the underwater floating body 53 are
The propulsion direction and propulsion force are arbitrarily changed to propel the hull 51 and underwater floating body 53 forward to vacuum and clean aquatic weeds that have grown in rivers, lakes, and marshes.

I see, this previously disclosed aquatic weed suction cleaning boat is not equipped with a rotating propeller in order to obtain propulsion force, but instead suctions and removes all aquatic weeds from their roots, and utilizes the discharging force when releasing the aquatic weeds. By using the propulsion force of the hull 51, making the ejected material come into contact with the swash plate 67, and changing the angle of the swash plate 67, the traveling direction of the hull 51 and the underwater floating body 53 can be changed arbitrarily. In addition, the underwater floating body 5 was not loaded with suctioned and removed aquatic weeds on the hull 51.
Since aquatic weeds are placed on the 3, the water intake of the hull 51 can be set to be shallow, and the hull 51 can be made small and lightweight, so it can be used not only for deep rivers and lakes, but also for small and medium-sized rivers, lakes and marshes with shallow water depth. It also has the advantage of being able to navigate in irrigation canals and clean up aquatic weeds.

In addition, the previously disclosed suction cleaning method for aquatic weeds is a method of cleaning aquatic weeds using a suction cleaning boat that has the above-mentioned effects, so it is suitable for deep rivers,
It is possible to clean aquatic weeds by navigating not only in lakes and marshes, but also in small and medium-sized rivers with shallow depths, lakes, marshes, and irrigation canals.In addition, the work efficiency is much improved compared to manual work using conventional rakes, etc., and aquatic weeds on riverbanks can be cleaned This is a suction cleaning method for aquatic weeds that is effective in suctioning and removing all aquatic weeds from their roots and even preventing their re-growth.

However, the disclosed suction cleaning method and the suction cleaning boat require the submersible floating body 53 behind the hull 51, so the hull 51 becomes bulky as a whole even though it is small. The disadvantage was that a large truck and crane were required to lift and lower the equipment.

In addition, it is necessary to run piping from the tip of the hull 51 to the vicinity of the swash plate 67, which requires a large amount of piping material, and the resistance and lift caused by the piping increases the resistance of the pump. The disadvantage was that piping had to be installed on the ship to discharge the water, which increased the height of the ship.

Furthermore, since the direction of propulsion of the suction cleaning boat is adjusted by causing aquatic weeds and water to collide with the swash plate 67, the direction of propulsion is not directly adjusted by the direction of discharge from the discharge pipe 63, so skill is required to adjust the direction of propulsion of the boat. On top of that, it was not possible to back up, which meant that the cleaning boat had to be moved to a different location from where the cleaning boat was dropped off.

(Means for Solving the Disadvantages) As a result of extensive research, the inventors noticed that there is a natural flow of water in rivers, etc., and that this flow can be utilized. Completed the invention method and invention.

That is, the present invention provides a suction and discharge device which is composed of a suction pipe, a pump connected to the suction pipe, and a discharge pipe device which is connected to the pump and whose discharge end can freely change the discharge direction at least in the vertical direction, and which can freely rotate in the horizontal direction. A suction cleaning boat is installed at the lower part of the front part of the hull, and a filter for accumulating submerged aquatic weeds is installed on the downstream side of the river, etc., and a suction cleaning boat is installed on the upstream side of the river. Submerged aquatic weeds that grow in the water and take root on the riverbed are pulled out and suctioned from the suction port of the suction pipe placed in the water, and the submerged aquatic weeds that are pulled out and suctioned are discharged from the discharge pipe device to reduce the flow of the river, etc. The discharged submersible aquatic weeds are accumulated on the filter, and by varying the discharge direction, the direction of propulsion and retreat of the suction cleaning boat and the propulsion and retreat force of the suction cleaning boat are arbitrarily changed to propel and retreat the suction cleaning boat. The aforementioned drawbacks are overcome by providing a suction cleaning method for submerged aquatic weeds.

Further, the present invention comprises a hull not equipped with a rotary propeller and a revolving body provided at the lower front part of the hull and capable of rotating freely, the hull being provided with at least a power source, and the revolving body being supported by a frame and the frame. The suction and discharge device comprises a suction and discharge device, a rotation device that rotates the rotating body, and the suction and discharge device includes a suction pipe, a pump that communicates with the suction tube, a discharge pipe device that communicates with the pump, and a drive device for the pump. By providing a suction cleaning vessel for submersible aquatic weeds, which comprises a vertical movement device for vertically rotating the suction and discharge device, and in which the discharge end of the discharge pipe device can freely vary the suction direction at least in the vertical direction. solve the shortcomings of

(Embodiment) Hereinafter, an embodiment of the suction cleaning method according to the present invention and a suction cleaning boat therefor will be explained in detail based on FIGS. 1 to 10.

As shown in FIGS. 1 to 4, the suction cleaning boat consists of a hull 1 which is not equipped with a rotary propeller, and a revolving body 2 that can swing freely at the lower part of the front part of the hull 1.

The revolving body 2 includes a frame 3, floats 4, 4 supported by the frame 3, a suction/discharge device 5, and the revolving body 2.
(see Fig. 5).

The suction and discharge device 5 includes a suction tube 7, a pump 8 connected to the suction tube 7, a discharge pipe device 9 connected to the pump 8, a drive device 10 for the pump 8, and an up-and-down mechanism that rotates the suction and discharge device up and down. and a moving device 11 (see FIG. 5).

The suction pipe 7 is attachable and removable to the pump 8 and has a length shape (angle) depending on the depth of the river etc.
By attaching this, an appropriate level of the suction port 7a can be selected.

In this embodiment, the discharge pipe device 9 includes a basic pipe 13 whose discharge end is bent vertically, for example, downward to form a bent pipe section 12, and the bent pipe section 12 is covered in an armour-like manner. It consists of a fan-shaped piece 14 with a fan-shaped side surface that can be freely rotated, and a fan-shaped piece rotating device 15 that rotates the fan-shaped piece 14 (see FIGS. 5 to 8).

The discharge pipe device 9 does not necessarily have to have the structure as in this embodiment; for example, a bellows-shaped pipe is used as the basic pipe 1.
3 may be connected in communication.

The hull 1 has a catamaran structure with a pair of floats 16, 16 at the bottom, which stabilizes the hull against reaction forces caused by flows from the sides of the hull 1 or suction and discharge of suction discharged materials. (See Figure 4).

17 is a hydraulic winch, 18 is a machine room, and 18a is a control device. This machine room 18 is equipped with a power source fuel tank, hydraulic pump, battery, etc. (not shown).

The frame 3 includes a square pipe 3a and an equilateral angle steel 3b.
It is constructed by welding into the required shape.

As shown in FIG. 1, the floats 4, 4 have a circular outer shape as a whole so that water resistance is small when the rotating body 2 turns in the water, that is, when the floats 4, 4 turn in the water. Suction and discharge device 5
Surround it in a plane.

As shown in FIG. 5, the swinging device 6 consists of a hydraulic motor 21 that rotates a large gear 19 and a small gear 20, and a swivel joint 21A, and speeds up the rotation of the hydraulic motor 21 to horizontally swing the swinging structure 2. .

Pump 8 is a bladeless centrifugal pump with a structure that prevents submerged aquatic weeds from becoming entangled or clogging.
Although a centrifugal pump can be used, a pump generally used as a submersible pump as shown in FIG. 9 can be suitably employed.

This pump 8 is constructed so that it is located underwater when in use so that water always enters the pump 8 when it is started, that is, the pump 8 does not run dry.

Therefore, there is no need for priming with a self-priming pump or the like as in the previously disclosed cleaning boats.

The drive device 10 is a hydraulic motor in this embodiment,
If a hydraulic motor is used, the load at startup will be smaller than that of an electric motor, and therefore the power source will be smaller.

The vertical movement device 11, as shown in FIG. 2
The suction and discharge device 5 is rotated in the vertical direction around the axis 3.

By this rotation, for example, when the tip of the suction tube 7, that is, the suction port 7a, is blocked by an obstacle, the suction port 7a of the suction tube 7 comes out above the water surface 24, as shown in FIG. 3, to remove the obstruction. It can be made easier.

The basic tube 13 is a cylindrical tube, and the curved tube section 12 is a square tube. The basic tube 13 and the curved tube section 12 are welded to each other, and at least one side of the curved tube section 12 is Pin 25A is fixed.

The fan-shaped piece 14A has a U-shaped cross section and is guided by the pin 25A, and has a groove 26A formed therein to restrain the rotating end of the fan-shaped piece 14A with the pin 25A. stick.

The fan-shaped piece 14B has a U-shaped cross section, is guided by the pin 25B, and has a groove 26B for restraining the rotating end of the fan-shaped piece 14B with the pin 25B, and has a rotatable force point 28 on the hydraulic cylinder 27. vinegar.

The shaft 29 includes the bent pipe portion 12, the fan-shaped piece 14A,
It is inserted into the fan-shaped piece 14B as shown in FIG. 7, and is the center of rotation of the fan-shaped pieces 14A and 14B.

In addition, the curved pipe part 12 is made into a cylinder, and the fan-shaped pieces 14A,
14B may each have a U-shaped cross section. However, if it is formed as shown in the example, the manufacturability is good.

This invention method is carried out as follows using, for example, the suction cleaning boat according to the invention having such a configuration.

For example, a filter 31 like a net for accumulating submerged aquatic weeds is disposed on the downstream side of a river 30 that requires cleaning in advance, and the suction cleaning boat is disposed on the upstream side.

A rope 32 is unwound from a hydraulic winch 17 and one end of the rope 32 is fixed to a bridge A or the like. Although this rope 32 is used to regulate the position of the suction cleaning boat, it is not necessarily required for the method of this invention.

When the pump 8 is in operation, it grows in the water and reaches the riverbed 3.
The suction port 7a of the suction pipe 7 is brought close to submerged aquatic weeds 34 that take root in the weeds 3. By the operation of the pump 8, the submersible aquatic weeds 34 are pulled out from the riverbed 33 through the suction port 7a arranged in the water and sucked, and the submerged aquatic weeds 34 thus pulled out and sucked are discharged through the pump 8 and the discharge pipe device 9. It is discharged together with water from the outlet 9a.

The discharged submerged aquatic weeds 34 are washed away by the flow of the river 30 and accumulate on the filter 31. Thereafter, the submerged aquatic weeds 34 accumulated on the filter 31 are collected together with the filter 31 or alone.

When suctioning the submerged aquatic weeds 34, the rotating body 2
By changing the angle of the cleaning boat with respect to the hull 1, the location where submerged aquatic weeds 34 are cleaned and the direction of movement of the cleaning boat are adjusted. If the hydraulic cylinder 27 is retracted and the direction of the discharge port 9a is determined as shown in FIG. 2 (FIG. 5), the suction cleaning boat will move backward, while the hydraulic cylinder 27 is extended and the direction of the discharge port 9a is determined as shown in FIG. 6. Once determined, the suction cleaning vessel will move forward. If the discharge port 9a is directed directly downward, the suction cleaning boat will stop. That is, by arbitrarily rotating the fan-shaped piece 14 by operating the fan-shaped piece rotation device 15, the direction of the discharge port 9a can be arbitrarily changed, and the propulsive force of the suction cleaning boat can be arbitrarily changed.

Further, the forward direction can also be restricted by the length of the rope 32, and if the rope 32 is used, it is easier to move the suction cleaning boat in an arc shape as shown by arrow B.

(Effects of the Invention) As described in detail above, the suction cleaning method for submerged aquatic weeds according to the present invention includes a suction pipe, a pump connected to the suction pipe, and a discharge end of the suction pipe connected to the pump in communication with the pump, the discharge end of which is connected at least in the vertical direction. Using a suction cleaning boat equipped with a suction and discharge device at the bottom of the front part of the hull, which consists of a discharge pipe device that can freely change the discharge direction and can freely rotate in the horizontal direction, submerged aquatic weeds are accumulated on the downstream side of rivers, etc. in advance. A suction cleaning boat is installed upstream of the filter, and the pump operates to pull out and suction submerged aquatic weeds that grow in the water and take root on the riverbed from the suction port of the suction pipe placed in the water. The submerged aquatic weeds that have been pulled out and suctioned are discharged from the discharge pipe device, and the discharged submerged aquatic weeds are accumulated on the filter by the flow of the river, etc., and by varying the discharge direction, the suction cleaning boat Since this is a suction cleaning method for submersible aquatic weeds in which the suction cleaning boat is propelled and retreated by arbitrarily changing the propulsion/retraction direction and the propulsion/retraction force, submerged aquatic weeds that have roots on the bottom of rivers, etc. can be easily pulled out and suctioned. Not only can cleaning be done by hand, but the work efficiency is much improved compared to the conventional manual work using a rake, etc., and unlike the previously disclosed suction cleaning method, there is no need for an underwater floating object, and there is no need for an underwater floating object. Not only does it not require long piping, this makes the suction cleaning vessel more compact.The suction and discharge device is installed at the bottom of the front of the hull, resulting in a lower ship height, making it easier to transport, lift and unload the suction cleaning vessel. It also becomes easier. Furthermore, instead of adjusting the ship's traveling direction and propulsive force by discharging water from the swash plate, the traveling direction and propulsive force of the suction cleaning boat are directly determined by the water discharged from the discharge port. It is extremely easy to adjust the force.

Furthermore, the suction cleaning boat according to the present invention comprises a hull not equipped with a rotary propeller and a revolving body installed at the lower front part of the hull and capable of rotating freely, the hull being equipped with at least a power source and the revolving body being a frame. The suction and discharge device includes a float supported by the frame, a suction and discharge device, and a rotating device for rotating the rotating body, and the suction and discharge device includes a suction pipe, a pump that communicates with the suction tube, and a discharge pipe device that communicates with the pump. A suction cleaning boat for submerged aquatic weeds, which comprises a pump drive device and a vertical movement device that rotates the suction and discharge device up and down, the discharge end of the discharge pipe device being able to freely vary the discharge direction at least in the vertical direction. Therefore, it is the most suitable suction cleaning boat that achieves the above effects.

[Brief explanation of drawings]

1 to 10 are diagrams for explaining an embodiment of the suction cleaning method and suction cleaning boat according to the present invention, in which FIG. 1 is a plan view of the suction cleaning boat, FIG. 2 is a left side view of the same, and FIG. The figure is a partially omitted variation of Fig. 1, Fig. 4 is a rear view, Fig. 5 is a detailed view of the rotating body, Fig. 6 is a partially omitted variation of the discharge pipe device, and Fig. 7 is a partially omitted variation of Fig. 1. 6 is a cross-sectional view taken along the line A-A in Figure 6, Figure 8 is a plan view of Figure 9, Figure 9 is a sectional view of the pump, Figure 10 is an explanatory diagram of the state of use, and Figure 11 is a plan view of a conventional suction cleaning boat. Figure, 1st
Figure 2 is a front view of the same. 1...hull, 2...swivel body, 3...frame,
4...Float, 5...Suction and discharge device, 6...Swivel device, 7...Suction pipe, 8...Pump, 9...Discharge pipe device, 9a...Discharge port, 10...Drive device, 11
... Vertical movement device, 12 ... Curved pipe section, 13 ...
Basic pipe, 14...Sector piece, 15...Sector piece rotating device, 16...Float, 30...River, 31...Filter, 33...River bottom.

Claims (1)

[Scope of Claims] 1. A suction pipe that is rotatable in the horizontal direction and includes a suction pipe, a pump that is connected to the suction pipe, and a discharge pipe device that is connected to the pump and has a discharge end that can freely fluctuate in the discharge direction at least in the vertical direction. A suction cleaning boat with a discharge device installed at the lower front of the hull is used, and a filter for collecting submerged aquatic weeds is installed on the downstream side of the river, etc., and each suction cleaning boat is installed on the upstream side, and the pump is activated. Therefore, the submersible aquatic weeds that grow in the water and take root on the riverbed are pulled out and suctioned from the suction port of the suction pipe placed in the water, and the submerged aquatic weeds that are pulled out and suctioned are discharged from the discharge pipe device to be used in rivers, etc. The discharged submersible aquatic weeds are accumulated on the filter by the flow, and the suction cleaning boat is propelled by arbitrarily changing the propulsion/retraction direction and the propulsion/retraction force of the suction cleaning boat by varying the discharge direction. A suction cleaning method for submerged aquatic weeds that causes them to recede. 2 Consisting of a hull that is not equipped with a rotary propeller and a revolving body that is installed at the lower part of the front part of this hull and can rotate freely, the hull is equipped with at least a power source, and the revolving body is a frame and a floating body supported by the frame. The suction and discharge device includes a suction and discharge device, and a rotating device that rotates the rotating body, and the suction and discharge device includes a suction pipe, a pump that communicates with the suction tube, a discharge pipe device that communicates with the pump, a drive device for the pump, and a suction and discharge device that rotates the rotating body. A suction cleaning boat for submerged aquatic weeds, which comprises a vertical movement device that rotates the device up and down, and in which the discharge end of the discharge pipe device can freely vary the discharge direction at least in the vertical direction. 3. The discharge pipe device includes a basic pipe whose discharge end is bent in the vertical direction to form a bent pipe section, and a side fan-shaped piece that is covered in an armor-like manner on the bent pipe section and is rotatable in the vertical direction. The suction cleaning boat for submerged aquatic weeds according to claim 2, characterized in that it comprises a fan-shaped piece rotating device for rotating the fan-shaped piece. 4. The suction cleaning boat for submersible aquatic weeds according to claim 2, characterized in that the pump is disposed so as to be located underwater. 5. The suction cleaning boat for submerged aquatic weeds according to claim 2, wherein the drive device of the pump is a hydraulic motor. 6. The suction cleaning boat for submerged aquatic weeds according to claim 2, characterized in that the suction pipe can be attached to and removed from the pump.