JPS61271194A - Absorbing cleaning method for underwater aquatic weeds and absorbing cleaning ship thereof - Google Patents

Abstract

PURPOSE:To efficiently collect the underwater aquatic weeds by installing a filter on the downstream side of a river, etc. and arranging an absorbing cleaning ship equipped with an absorbing pipe and a discharge pipe connected to a pump on the upstream side and discharging the weeds absorbed by the absorbing pipe towards the downstream side from the discharge pipe. CONSTITUTION:A filter 31 like a net is installed previously on the downstream side of a river 30, etc., and an absorbing cleaning ship 1 is arranged on the upstream side. A turning body 2 is installed at the bow part of the cleaning ship 1, and an absorbing pipe and a discharge pipe connected to a pump are installed onto the turning body 2, and a rope 3 whose one edge is engaged with a bridge A, etc. is engaged with the winch of the cleaning ship 1, and the underwater aquatic weeds whose root is grounded onto the river bottom are absorbed from the absorbing pipe, regulating the position, and discharged towards the downstream from the discharge pipe. The weeds are collected by the filter 31 arranged on the downstream side, and the weeds such as river grass, etc. can be removed efficiently.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention is a method for suctioning submerged aquatic weeds that have grown unnecessarily in rivers, irrigation canals, or flowing lakes and marshes (abbreviated as rivers, etc. in this specification). It relates to a cleaning method and a suction cleaning vessel suitable for the purpose, the purpose of which is to remove submerged aquatic weeds such as snail spiders and canadian weeds, which breed in water, are wholly or mostly submerged in water, and have roots on riverbeds. The object of the present invention is to provide a cleaning method and a cleaning boat that are extremely effective for cleaning rivers, etc.

(Background of the Invention) Submersible aquatic weeds that breed in water, such as lizard spiders and canada spiders, 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, as they can become entangled and cause problems with ship navigation, become entangled in fishing nets and cause problems with fisheries, obstruct the flow of rivers, etc., or impede the beautification of rivers, etc.

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. Sufficient monitoring is not carried out in rivers, etc.
Currently, it is causing the abnormal proliferation of submerged aquatic weeds, and it is difficult to find a way to eliminate 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 is that once aquatic weeds grow, the same work must 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. 835.

As shown in FIGS. 11 and 12, this previously disclosed cleaning boat has a hull (51) not equipped with a rotary propeller and an underwater floating boat connected to the hull (51) via a coupling device (52). It consists of a body (53), an engine (54),
A self-supplying pump (55) and a suction pump (56) are installed, and the drive shafts of these devices are connected to a connecting shaft (5
The suction pump (5) is connected and integrated through the suction pump (5).
A suction pipe (58) is connected to the suction path of 6), and this suction pipe (58) is connected to the suction port adjustment fitting (60) and This suction port adjustment fitting (
An arm (61) supporting the arm (60);
Controller (61) consisting of a hydraulic cylinder supporting
A discharge pipe (63) is connected to the discharge path of the suction pump (56), and this discharge pipe (63) extends above the underwater floating object (53) connected to the rear of the hull (51). The extending underwater floating body (53) is configured in a raft shape with a plywood (65) installed on a float (64), and a column (66) erected on this plywood (65).
An aquatic weed comprising: a swash plate (67) rotatably attached to the discharge end of the discharge pipe (63) or directly attached to the discharge end of the discharge pipe (63) and in contact with the discharge pipe (63) at a required distance; It is a suction cleaning vessel for.

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 sucked together with water 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 (5B). 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 the vertical angle of the swash plate (67) and the inclination angle with respect to the left and right are arbitrarily changed. The direction and force of propulsion of the underwater floating body (53) 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. The propulsive force of the hull (51) is used to bring this ejected material into contact with the swash plate (67), and this swash plate (67)
The traveling direction of the hull (51) and underwater floating object (53) can be arbitrarily changed by changing the angle of Since aquatic weeds are placed on the floating body (53), the water intake of the hull (51) can be set to be shallow, and therefore the hull (51) can be made small and lightweight, so it can be used not only in deep rivers and lakes. It has the advantage of being able to navigate in small and medium-sized rivers, lakes, and irrigation canals with shallow water depth to clean 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 can be used not only in deep rivers and lakes, but also in small and medium-sized rivers with shallow depths. It can be used to clean aquatic weeds by navigating in lakes or irrigation canals, and it is much more efficient than manual work using conventional rakes, etc., and it also sucks out and removes all aquatic weeds from the roots. This is a suction cleaning method for aquatic weeds that is effective in preventing even the re-occurrence of aquatic weeds.

However, this previously disclosed suction cleaning method and suction cleaning boat require an underwater floating body (53) behind the hull (51), so the hull (51) is bulky as a whole even though it is small. The drawback was that large trucks and cranes were required to transport the cleaning boat and to lower it into rivers, etc.

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 of the piping increases the resistance of the pump.
Moreover, it is necessary to install piping on the ship to discharge water and the like to the swash plate (67), which has the disadvantage of increasing the height of the ship.

Furthermore, the direction of propulsion of the suction cleaning boat is adjusted by causing aquatic weeds and water to collide with the swash plate (67).
3) Since the propulsion direction is not directly adjusted by the discharge direction from the vessel, skill is required to adjust the vessel's propulsion direction, and it is not possible to retreat.
For this reason, there was a drawback that the tow truck had to be moved to a different location from where the cleaning boat was unloaded.

(Means for solving the drawbacks) 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.
The present method and invention have been completed to solve these drawbacks.

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 bottom of the front part of the hull, and a filter is installed in advance on the downstream side of the river to collect submerged aquatic weeds. 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 provided, and the submerged aquatic weeds that have been pulled out and suctioned are discharged from the discharge pipe device to be carried out by the flow of the river, etc. Submersible aquatic weeds that accumulate the discharged submersible aquatic weeds on the filter, and arbitrarily change the propulsion/retreat direction and propulsive/retreat force of the suction cleaning boat by varying the discharge direction to propel the suction cleaning boat back. The above-mentioned drawbacks are solved by providing a suction cleaning method.

Furthermore, this invention comprises a hull not equipped with a rotary propeller and a revolving body installed at the lower part of the front part of this hull and capable of rotating freely, the hull receiving at least a power a'fcm, and the revolving body attached to a frame and this frame. The suction and discharge device comprises a supported float, a suction and discharge device, and a rotating device for rotating the rotating body, and the suction and discharge device is connected to a suction pipe, a pump that communicates with the suction tube, a discharge pipe device that communicates with the pump, and a drive for the pump. By providing a suction cleaning boat for submersible aquatic weeds, which comprises a device and 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 discharge direction at least in the vertical direction. Solving the aforementioned drawbacks.

(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) that is not equipped with a rotary propeller and a revolving body (2) that can swing freely at the lower part of the front of the hull (1).

The revolving body (2) includes a frame (3), floats (4) supported by the frame (3), and a suction/discharge device (5).
and a rotating device (6) for rotating the rotating body (2) (
(See Figure 5).

The suction and discharge device (5) includes a suction tube (7) and this suction tube (7).
A pump (8) connected in communication with the pump (8), a discharge pipe device (9) connected in communication with the pump (8), and a drive device α for the pump (8)
0 and a vertical movement device (11) that rotates the suction and discharge device up and down.
) (see Figure 5).

The suction pipe (7) is removable and can be attached to the pump (8) and has a length and shape (angle) depending on the depth of the river, etc. By attaching the suction pipe (7) to the pump (8), the proper suction port (7a) can be set. You can choose the level.

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 part (12), and a bent pipe part (12). It consists of a fan-shaped piece (14) with a fan-shaped side surface that is covered in a shape and can freely rotate in the vertical direction, and a fan-shaped piece rotation device (15) that rotates this fan-shaped piece (14) (see Figs. 5 to 8). (see figure).

The discharge pipe device (9) does not necessarily have to have the same structure as in this embodiment; for example, a bellows-shaped pipe may be connected to the basic pipe (13).

The hull (11) has a pair of floats (16), (16) below and has a catamaran structure, flowing from the side of the hull (1),
Alternatively, the hull is stabilized against reaction forces caused by suction and discharge of suction and discharge materials (see Fig. 4).

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

The frame (3) consists of square pipes (3a) and regular mountain shaped steel (3
b) is welded into a desired shape.

The floats (4) and (4) are connected to the rotating body (2) as shown in Figure 1.
The outer shape is circular as a whole so that water resistance is small when the floats (4), (4) rotate in the water, that is, when the floats (4), (4) rotate in the water. Surround in a plane.

The swivel device (6) consists of a hydraulic motor (21) and a swivel joint (21A'') that rotates a large gear (19) and a small gear (20), as shown in FIG.
The rotation of 1) is decelerated to cause the rotating body (2) to horizontally rotate.

The pump (8) can be a bladeless centrifugal pump or a centrifugal pump that does not get entangled or blocked by submerged aquatic weeds, but a pump that is generally used as a submersible pump as shown in FIG. 9 can be suitably used.

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.

In this embodiment, the drive device (10) is a hydraulic motor, and if a hydraulic motor is used, the load at startup is smaller than that of an electric motor, and therefore the power source is smaller.

As shown in FIG. 5, the vertical movement device (11) has, for example, one end of a hydraulic cylinder (22), (22) rotatably fixed to the pump (8), and the hydraulic cylinder (22), (22)
Due to the expansion and contraction of the hinge (
23), the suction and discharge device (5) is rotated in the vertical direction.

Due to 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) will be moved to the water surface (24) as shown in Figure 3. You can make it easier to remove obstacles by coming out from the top.

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. A pin (25A) is fixed to at least one example of the tube portion (12).

The fan-shaped piece (14A) has a U-shaped cross section and is guided by the pin (25A), and the rotating end of the fan-shaped piece (14A) is connected to the pin (25A).
A groove (26A) for restraining is drilled, and a pin (25B) is fixed to at least one of the sectors (146).

The fan-shaped piece (14, 8) has a U-shaped cross section and is attached to the pin (25B).
The rotating end of the fan-shaped piece (14B) is guided by the pin (25B).
) is bored with the groove (26B), and the hydraulic cylinder (27) has a rotatable force point (28).

The shaft (29) has these curved pipe parts (12), fan-shaped pieces (14A
) The fan-shaped piece (14B) is inserted into the fan-shaped piece (14B) as shown in FIG. 7, and 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 piece (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 net-like filter (31) 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 this invention method.

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

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 weed (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. Contract the hydraulic cylinder (27) and open the discharge port (9).
If the direction a) is determined as shown in Figure 2 (Figure 5), the suction cleaning boat will move backwards, while if the hydraulic cylinder (27) is extended and the direction of the discharge port (9a) is determined as shown in Figure 6. The suction cleaning vessel moves forward. If the discharge port (9a) is directed directly downward, the suction cleaning boat will stop. That is, the fan-shaped piece (14) is moved by the fan-shaped piece rotation device (
15), the direction of the discharge port (9a) can be changed arbitrarily, and the propulsive force of the suction cleaning boat can be changed arbitrarily.

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 the 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 in at least the vertical direction. We use a suction cleaning boat equipped with a suction and discharge device that is equipped with a discharge pipe device that can freely change the discharge direction and can freely rotate in the horizontal direction at the lower front of the hull, and collect submerged aquatic weeds in advance on the downstream side of rivers, etc. A suction cleaning boat is installed on the upstream side of each filter, and a pump is operated 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 in the filter by the flow of a river, etc., and the direction of the suction and cleaning boat is moved backward by varying the discharge direction. This is a suction cleaning method for submerged aquatic weeds in which the suction cleaning boat is propelled and retreated by arbitrarily changing the propulsion and retraction force, so submerged aquatic weeds that have roots on the bottom of rivers, etc. can be easily pulled out and cleaned by suction. In addition, it is of course much more efficient than 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 the distance to the underwater floating object is long. No piping is required, and this not only makes the suction cleaning boat more compact, but the suction and discharge device is installed at the bottom of the front of the hull, which lowers the ship height, making it easier to transport and lower the suction cleaning boat. In addition, water is discharged from the swash plate to adjust the ship's traveling direction and propulsive force. Adjustment of direction and propulsion is extremely easy.

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 comprises 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 is connected to a suction pipe, a pump that communicates with the suction tube, and a discharge pipe device that communicates and connects 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 the drawing]

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 figures are 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.
The figure is a 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 usage state, and Figure 11 is a conventional suction cleaning method. A plan view of the ship, and FIG. 12 is a front view thereof. (1) - Hull (21 - Swivel body (3) -
- Frame (4) - Float (5) - Suction and discharge device (61- Swivel device (71- Suction pipe
(8) - Pump (9) - Discharge pipe device (
9a)--Discharge port α [-Drive device (11)
- Vertical movement device (12)---Universe pipe forming section (1
3)-Basic pipe (14)-m-Sector piece (15)
・-Sector-shaped piece rotation device (16)-111 float
(30)・-川(31)-m-・Filter
(33)...River bed Figure 3 Figure 4

Claims (6)

[Claims] (1) A suction and discharge device that is composed of a suction pipe, a pump that is connected to the suction pipe, and a discharge pipe device that is connected to the pump and whose discharge end can freely change the discharge direction at least vertically, and that can freely rotate in the horizontal direction is attached to the hull. Using a suction cleaning boat installed at the lower part of the front part, 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.
By the operation of the pump, 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 have been pulled out and suctioned are discharged from the discharge pipe device. The submersible aquatic weeds discharged by the flow of a river or the like are accumulated in the filter, and the suction cleaning boat is propelled by arbitrarily changing the propulsion/retreat direction and propulsion/retreat 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) Consists of a hull that is not equipped with a rotary propeller and a revolving body that is installed at the bottom of the front part of this hull and can swing freely,
The hull includes at least a power source, and the revolving body includes a frame, a float supported by the frame, a suction and discharge device, and a turning device that rotates the revolving body, and the suction and discharge device communicates with the suction pipe and the suction pipe. The pump consists of a pump, a discharge pipe device connected to the pump, a driving device for the pump, and a vertical movement device that vertically rotates the suction and discharge device, and the discharge end of the discharge pipe device can freely vary the discharge direction at least in the vertical direction. Suction cleaning boat for submersible aquatic weeds. (3) The discharge pipe device has a basic pipe in which the discharge end is bent in the vertical direction to form a bent pipe part, and a fan-shaped side surface that is covered in an armor-like manner on the bent pipe part and can freely rotate in the vertical direction. 3. A suction cleaning boat for submerged aquatic weeds as set forth in claim 2, characterized in that it comprises a blade and a fan-shaped piece rotating device for rotating the fan-shaped piece. (4) A 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) A suction cleaning boat for submerged aquatic weeds according to claim 2, wherein the suction pipe is detachably attached to the pump.