JPH04293594A - Robot for purifying water - Google Patents

Abstract

PURPOSE:To provide a small-sized inexpensive water purifying robot capable of stirring the sludge on the bottom of the water in a moving state without diffusing said sludge. CONSTITUTION:A water purifying robot communicates with an air compressor 4 provided above the surface of water and has a buoyancy control chamber 3 and also has a water bottom stirring chamber covering the bottom of the water provided to the lower part thereof and is constituted of the vertical motor 7 provided so that the axis thereof almost coincides with the center of the plane in the water bottom stirring chamber 5, the axial tension deflecting means 9 provided in the vicinity of the lower end of the shaft of the vertical motor and converting the rotation of the vertical motor to horizontal rotation, the stirring shafts 8 provided to the left and right parts of the axial tension deflecting means 9 in a protruding state and the spades 10 provided to the stirring shaft so as to be capable of stirring the bottom of the water.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a robot used for purifying water in closed bodies of water such as bays and lakes.

0002

BACKGROUND OF THE INVENTION In recent years, it has been said that fisheries resources have been depleted, and cultivation of fish and shellfish, kelp, seaweed, etc. that are compatible with the water quality, whether in bays or lakes, has been carried out throughout Japan.

[0003] Generally speaking, aquaculture farms are usually established in closed bodies of water such as bays in sea areas and lakes in freshwater areas for convenience of management. Contamination from feed, fish and shellfish excrement, and domestic wastewater from nearby areas increases, enriching organic matter such as nitrogen (N) and phosphorus (P), which eventually decomposes, causing eutrophication of highly nutrient-rich seawater. This causes abnormal growth of plankton and algae, creating an oxygen-deficient condition that kills fish and shellfish.

[0004] Conventionally, measures taken to purify the inner bay area in response to this aging phenomenon of seawater, which is a phenomenon in which the seawater is losing its natural purification ability, include stirring with cultivators and covering with sand to improve the bottom sediment. It's been coming.

[0005] However, none of these methods is more than a palliative measure and is not a permanent and drastic measure.

[0006]

[Problems to be Solved by the Invention] As mentioned above, there has been no technology for improving bottom sediment in bays, lakes, etc. that is superior in terms of quality, cost, etc. As a drastic and permanent method, there is a method of dredging from ships or land, and installing equipment to process and collect the waste by yourself, without dumping the waste, but the scale would be too large, so it would be difficult to raise funds, etc. There were problems in terms of profitability.

An object of the present invention is to provide a small and inexpensive water purification robot that solves this problem.

[0008]

[Means for Solving the Problems] As a means for solving the above problems, the present invention provides a water purification robot described in the following (1) to (4).

(1). A water purification robot characterized by comprising a robot whose entire center of gravity is relatively located at the lower part of the robot, and a buoyancy chamber that is provided independently and filled with air at the top of the robot.

(2). The water purification robot described in (1) above is equipped with a buoyancy adjustment chamber provided directly below the buoyancy adjustment chamber, and an air compressor installed above the water so that air can be supplied to the buoyancy adjustment chamber through an air supply pipe. A water purification robot that is characterized by the ability to

(3). The water purification robot described in (2) above includes a bottom stirring chamber that communicates with the buoyancy adjustment chamber and is provided below it, and a bellows that is provided on the bottom side of the bottom stirring chamber so as to be able to come into contact with the bottom of the water. A water purification system comprising: a skirt shaped like the above, a forced air supply pipe that communicates the air compressor with the bottom stirring chamber, and an electric propeller provided inside the bottom stirring chamber of the forced air supply pipe. robot.

(4). In the water purification robot described in (3) above, a vertical motor is provided with its axis aligned with approximately the center of the plane inside the underwater stirring chamber, and a vertical motor is provided near the lower end of the shaft of the vertical motor. An axial force deflection means for converting the rotation of a shaped motor into horizontal rotation, a stirring shaft provided protruding from the left and right sides of the coaxial force deflection means, and a plow provided on the stirring shaft so as to be able to stir the bottom of the water. A water purification robot characterized by:

[0013]

[Operations] Since the present invention is constructed as described above, it has the following functions.

(1). In the configuration (1) above, since the buoyancy chamber is provided at the top of the robot whose center of gravity is located at the bottom, the robot's balance in the water is good, and the weight of the robot in the water can be reduced to zero, making it possible to avoid protrusions on the bottom of the water. Even if you run over something and fall, you can get up on your own like a fist.

(2). In the configuration described in (2) above, the water previously placed in the buoyancy adjustment chamber provided directly below the buoyancy chamber is forcibly expelled by air pressure by supplying air from an air compressor on the water through an air supply pipe. The robot can be lifted up by adding buoyancy.

Furthermore, by exhausting air from the air supply pipe, water is naturally filled from the bottom, allowing the robot to descend to the bottom of the water.

(3). In the configuration (3) above, a bellows-like skirt is attached to the bottom contact part of the bottom stirring chamber, so that it flexibly adapts to the unevenness of the bottom, so that the stirred material does not spread to the surroundings during bottom stirring.

[0018] In addition, forced air supply (aeration) is carried out to the underwater stirring chamber from above the water surface by a forced air supply pipe, and strong wind is blown into the underwater stirring chamber by a powered propeller, so dissolved oxygen increases in the underwater stirring chamber. Decomposition of organic matter is promoted.

Furthermore, the exhaust air from the bottom stirring chamber is exhausted above the water surface through the air supply pipe of the buoyancy adjustment chamber, so the supply air for buoyancy adjustment, the exhaust air, and the waste air from forced air supply (aeration) are all connected to one pipe. can.

(4). In the configuration (4) above, the stirring shaft is provided so as to protrude left and right with respect to the shaft of the vertical motor by means of the axial force deflection means, and the plow is attached to enable stirring of the bottom of the water, so that the stirring shaft is moved by the vertical motor. When rotated, the water bottom in the bottom stirring chamber is stirred, promoting the decomposition of organic matter such as bottom soil.

[0021]

[Embodiment] An embodiment of the present invention will be explained based on FIGS. 1 and 2.

FIG. 1 is a schematic vertical cross-sectional view of a water purification robot according to this embodiment, and FIG. 2 is a cross-sectional view taken along the line A--A in FIG. On both sides, an independent buoyancy chamber 2 filled with air is provided at the top of the robot 1, so that the underwater weight of the robot 1 is reduced to approximately zero.

[0023] Immediately below the buoyancy chamber 2 is a buoyancy adjustment chamber 3, which is connected to an air compressor 4 installed above the water surface by an air supply pipe 21 that is long and flexible. ing. A bottom stirring chamber 5 is provided at the bottom of the buoyancy adjustment chamber 3 and is connected to the buoyancy adjustment chamber 3 by opening a part of the bottom thereof. A bellows-shaped skirt 6 made of metal and several pieces of cloth or rubber is attached around the stirring chamber 5 so that it can contact the bottom of the water with good flexibility.

The stirring chamber 5 has a circular shape, and is provided with a vertical motor 7 whose axis is located at the center of the circle, converting the vertical axis rotation of the vertical motor 7 into horizontal axis rotation. An axial force deflection device 9 that has both a mechanism for transmitting force to the stirring shaft 8 and a mechanism for rotating the stirring shaft 8 in a circle around the motor shaft 16 (FIG. 2), which is the shaft of the vertical motor 7, is attached to the motor shaft 16. attached.

The stirring shaft 8 is attached to the motor shaft 16 with unequal lengths, and a plurality of screw-shaped plows 10 are attached to both sides of the stirring shaft 8, respectively.

The stirring shaft 8 at the part to which the plow 10 is attached is made of an elastic cylindrical spring part 11 so as to be able to avoid resistance from protrusions on the seabed.

In addition to this, the stirring chamber 5 has a forced air supply pipe 2 which is flexible and has a sufficient length, and which is connected to the air compressor 4.
2 is attached to perform aeration inside the stirring chamber 5. The tip of the forced air supply pipe 22 is connected to a motor-driven electric propeller 12 that forcibly diffuses the agitated material in the stirring chamber 5.
It is connected to the negative pressure section of the air compressor, and has the effect of reducing the discharge pressure of the air compressor and diffusing air. An electric thruster 13 for horizontally moving the robot 1 and a rotatable monitor camera 14 are attached to monitor the agitation situation at the bottom of the water and the outside of the agitation chamber 5 from above the water surface.

The power lines for the stirring shaft drive motor, the motor for dispersing the agitated material, the thruster drive motor for horizontal movement of the robot, and the transmission cable for the monitoring monitor, which are provided in the stirring chamber 5, are The composite cables 23 are combined into one cable and connected to the power source 15 on the water surface.

As mentioned above, the length of the stirring shaft 8 is unequal to the left and right sides of the motor shaft 16, and on both sides of the stirring shaft 8, as shown in FIG. 2, a plurality of screw-shaped plows 10 are provided. The long axis side is attached to the outside and the short axis side is attached to the inside. With this configuration, the probability of getting caught by foreign objects on the bottom of the water is reduced.

Since this embodiment is constructed as described above, when the stirring shaft 8 rotates in a circle around the motor shaft 16, the long axis side covers the outer circumferential area of the stirring chamber 5, and the short axis side covers the outer peripheral area of the stirring chamber 5. As a result, the entire area inside the stirring chamber 5 is stirred.

As a result, the accumulated sludge and sludge on the bottom of the water in the stirring chamber 5 are plowed back and fragmented, and at the same time, they are efficiently mixed with the air sent by the air compressor 4 to decompose organic matter. is promoted. In addition, methane gas and other gases that are undesirable to living things that have already accumulated in the sludge are effectively discharged.

[0032] In this manner, by making full use of the electric thruster 13 and moving the robot 1 along the water bottom, a desired water area can be agitated, thereby purifying the water quality.

[0033]Therefore, although it is possible to purify a vast area of water, there is an advantage that the equipment investment cost is extremely small.

Furthermore, the device of this embodiment can be transported by a land transport vehicle such as a carrier or a truck or a trailer, and can be easily transported to remote waters, has extremely high versatility and operability, and is cost-effective. It also has the advantage of being superior.

[0035] Furthermore, since the bottom of the water being stirred is almost completely covered by the stirring chamber and the bellows-like skirt, sludge, foreign matter, etc. thrown up by stirring will not leak out to the outer periphery.
From this point of view as well, there is an advantage that a hygienic stirring process can be performed.

[0036] In this embodiment, the axial force deflection device 9 is made asymmetric by having different lengths of the left and right stirring shafts 8 that protrude left and right. The length may be the same for reduction etc. However, in that case, the plows 10 may be provided over the entire area of the stirring shaft 8, or may be individually and selectively movable and fixed.

[0037]

Effects of the Invention Since the present invention is constructed as described above, it has the following effects.

That is, according to the present invention, since forced air supply (aeration) is also used in the underwater stirring chamber, the oxygen-poor water mass in the deep water layer is eliminated.

Furthermore, since the exhaust gas can be discharged into the atmosphere through the air supply pipe, the exhaust gas will not mix with the surface water layer. Moreover,
Since an underwater stirring chamber is provided, the sludge caused by stirring will not be spread to the surrounding area.

[0040] Since a buoyancy chamber filled with air is provided at the top of the robot, and the center of gravity is located at the bottom of the robot, it has an extremely good adaptability to the surface conditions of the water bottom due to its so-called upright fist-like action. can also be restored on its own.

[0041] Furthermore, robots can purify vast bodies of water with small equipment that can move on the bottom of the water and at a low cost.

[0042] Furthermore, since the apparatus is transportable, the operating rate is extremely high, and investment efficiency is excellent.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical sectional view of a water purification robot according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1;

[Explanation of symbols]

1 Robot 2 Buoyancy chamber 3 Buoyancy adjustment room 4 Air compressor 5 Stirring chamber 6 Skirt 7 Vertical motor 8 Stirring shaft 9 Axial force deflection device 10 Plow 11 Cylindrical spring part 12 Electric propeller 21 Air supply pipe 22 Forced air supply pipe

Claims (4)

[Claims] Claim 1: A water purification robot characterized by comprising a robot whose entire center of gravity is relatively located at a lower part, and a buoyancy chamber provided independently by filling air at the top of the robot. . [Claim 2] The water purification robot according to claim 1, comprising: a buoyancy adjustment chamber provided directly below the buoyancy chamber; and an air compressor installed above the water so that air can be supplied to the buoyancy adjustment chamber through an air supply pipe. A water purification robot characterized by comprising: [Claim 3] In the water purification robot according to claim 2, there is provided a bottom agitation chamber that communicates with the buoyancy adjustment chamber and is provided below the buoyancy adjustment chamber, and a bottom side of the bottom agitation chamber that can make adaptive contact with the bottom of the water. A bellows-shaped skirt provided therein, a forced air supply pipe that communicates the air compressor with the bottom stirring chamber, and an electric propeller provided inside the bottom stirring chamber of the forced air supply pipe. Water purification robot. 4. In the water purification robot according to claim 3, there is provided a vertical motor whose axis is aligned with substantially the center of the plane inside the underwater stirring chamber, and a vertical motor provided near the lower end of the shaft of the vertical motor. An axial force deflection means for converting the rotation of the provided vertical motor into horizontal rotation, a stirring shaft provided protruding to the left and right of the coaxial force deflection means, and a stirring shaft provided on the stirring shaft so as to be able to stir the bottom of the water. A water purification robot characterized by being equipped with a spade and a spade.