JP2009022834A - Apparatus for recovering useless algae, floating mud and the like floating or depositing in water and on water bottom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently recover useless algae, such as sea lettuce, temporarily generated in large quantities and floating mud depositing on the water bottom, over a wide range of water depth. <P>SOLUTION: Floating deposits, such as sea lettuce, temporarily generated in large quantities and floating mud depositing on the water bottom having no specific gravity difference between them and water and hardly sucked by an existing pump or the like due to their twining inside the pump or the like are blown up by compressed air discharged from a discharge port installed on the water bottom surface to be introduced into a suction pipe. These deposits are raised up to the water surface together with useless algae and floating mud floating around a suction port by a water flow accompanying a rapid rise of the compressed air and secondary air discharged into the suction port to be recovered. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for recovering unnecessary algae, floating mud, etc. that float or accumulate in water and in the bottom of water.

In recent years, inflowing nutrients and the like have increased due to changes in the surrounding environment in highly closed water areas such as lakes and inner bay sea areas, and the water quality has become eutrophic, and abnormal algae and seaweeds such as seaweeds and seaweeds have grown abnormally, There are problems such as accumulation of floating mud, which is a decomposition residue of these organic substances.

  However, unnecessary algae such as seaweed and floating mud have a specific gravity almost equal to that of water and float in the water or are softly deposited on the bottom of the water. It is difficult to recover by escaping from the recovery port, and if it is attempted to be recovered by suction with a pump or the like, it cannot be suctioned by being entangled with a movable part in the pump such as an impeller or a valve.

Moreover, since unnecessary algae such as seaweed are generated and grow in large quantities at a time, it is necessary to collect them in a relatively short time. In addition, it is desirable to consider the processing after recovery or how to reuse it in a fresh state before being spoiled and free from foreign matter such as sediment on the bottom of the water.

Until now, various tests have been tried, such as using a ground-drawing net or various suction pumps, but no great results have been found. A method of collecting large quantities of materials launched on the shore using a heavy machine such as a bulldozer or backhoe. Is being put into practice, but it has become a major obstacle to later processing and reuse because of the progress of decay while reaching the shore, and sand and other substances. Further, there is also disclosed a seaweed recovery ship that scoops seaweed etc. in the form of a belt conveyor, but the depth of water that can be recovered is limited by the length angle of the conveyor.
JP 07-047989 A

  The problem to be solved is that there is no specific gravity difference with unnecessary algae such as blue seaweed that temporarily generate a large amount of water such as floating mud deposited on the bottom of the water, and existing pumps etc. due to tangling inside Then, it is to efficiently collect floating sediment that is difficult to be collected by suction at a wide range of water depths from a shallow place to a relatively deep place.

  The present invention has no specific gravity difference with water such as unnecessary seaweed such as sea urchins and floating mud deposited on the bottom of the water, and is collected by suction with an existing pump or the like due to entanglement inside. Difficult suspended deposits are swollen by compressed air from the discharge port installed on the bottom of the water and guided to the suction pipe, and these deposits are caused by this compressed air and the water flow accompanying the sudden rise of the secondary air discharged into the suction port. It is characterized by lifting and collecting both floating algae and mud floating around the suction port to the surface of the water.

  The apparatus for recovering unnecessary algae, floating mud, etc. floating or depositing on the water and bottom of the water of the present invention collects the unnecessary algae, floating mud, etc. floating or depositing on the bottom of the water by lifting them from the bottom with compressed air and collecting them by suction. Therefore, sand without any difference in specific gravity is smoothly sucked, there are no elements such as impellers, valves, etc. in the path from suction to collection, and it is also lifted by compressed air and sand due to water flow generated by its buoyancy There is an advantage that it is possible to efficiently collect unnecessary algae, floating mud, etc. that float or deposit on the bottom of the water regardless of the depth of water from a very shallow water area to a relatively deep place without sucking in foreign matter with a high specific gravity. .

Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
FIG. 1 is an overall view of one embodiment of the present invention, wherein 1 is an apparatus main body for collecting unnecessary algae, floating mud, etc. floating or deposited on the water and the bottom of the present invention, and 2 is an apparatus of the present invention. Disclosed in Japanese Patent Application No. 2003-167250, which is suitable as an underwater moving means, and registered as Japanese Patent No. 3806671, disclosed in an underwater working machine driven by an air motor and a method thereof, and a water bottom purification apparatus and method using the same. This is an underwater working machine that is driven by compressed air and can travel and move on the bottom of the water. The apparatus of the present invention is mounted on the underwater working machine, and the bottom surface 6 is moved according to the undulation of the bottom of the water. Reference numeral 3 denotes a mother ship of the underwater work machine 2, and a compressor 4 on the mother ship sends and operates compressed air to the apparatus of the present invention and the underwater work machine. Reference numeral 5 denotes a water surface, and unnecessary algae, floating mud, etc. floating or deposited on the bottom of the water sucked by this apparatus are guided to the water surface by the hose 7 and are collected in the collection network 8. 9 is a hose for supplying compressed air to the apparatus and the underwater working machine of the present invention.

  FIG. 1 is an overall view of an embodiment of the apparatus of the present invention. The apparatus of the present invention mounted on two underwater work machines is operated by supplying compressed air from a mother ship 3 by four compressors. Unnecessary algae, floating mud, etc. floating or deposited on the bottom of the water sucked by the apparatus of the present invention are collected in 8 collection nets held by the mother ship 3 through 7 hoses.

  The mother ship 3 and the compressor 4 are general-purpose ones, and the present invention relates to an apparatus main body that collects unnecessary algae, floating mud, etc. that float or accumulate on the water and in the bottom of the water, and the description thereof will be omitted.

  FIG. 2 is a plan view and a side view of an embodiment of the present invention, wherein the bottom surface of the device of the present invention is moved along the bottom surface. At this time, 15 sediments are raised, nail crushes the unnecessary algae and floating mud etc. accumulated on the bottom of the water, and the collected algae and floating mud are converged to 12 suction ports by 14 collecting rods. Compressed air that is located below and vigorously discharged vertically from the compressed air discharge port 10 on the bottom surface of the water soars these unnecessary algae and floating mud, and the buoyancy of the compressed air itself is added to the ascent rate. As the flow increases, the water flows toward the suction port 12 and converges toward the suction port 12 due to friction with the compressed air rising at this time. For this reason, the undesired algae, floating mud and the like soared are sucked along with the water flow into the suction port 12 along the 13 guide rods.

The suction port 12 has a conical shape, and the sucked unnecessary algae, floating mud, etc. and the water flow are converged so that the flow rate is increased. In addition, a large number of secondary air in the suction port provided on the inner periphery of the inner wall of the suction port 12. Since the compressed air is also discharged from the discharge port 11 toward the upper water surface, these unnecessary algae, floating mud, and the water flow rise more and more rapidly, so that the suction flow that converges toward the suction port 12 is gradually gathered at the 12 suction port entrance. Undesirable algae, floating mud, etc. floating around are generated and sucked.

At this time, earth and sand with heavy specific gravity do not rise and are hardly sucked. Undesired algae, floating mud, and the like sucked in this way move toward the water surface while being increased in speed by the compressed air that floats inside the hose 7 and the water flow that accompanies this, and are collected in the collection net 8.

  In the closed waters such as lakes and inner bays, inflowing nutrients increase due to changes in the surrounding environment, the water quality becomes eutrophication, unnecessary algae and seaweeds such as blue seaweed and blue sea bream grow abnormally, and these organic matter There is a problem such as accumulation of floating mud, which is the decomposition residue of the seawater, and these unnecessary algae, floating mud, etc. cover the bottom of the water and bring about a decrease in marine resources. It will contribute to recovery. Research is also progressing to recycle and reuse recovered unnecessary algae as a raw material for food, fertilizer, or biomass energy, and recovery using the device of the present invention, which is less contaminated with sand and the like before being spoiled, can also be applied to this application. .

It is the whole explanatory drawing which showed the apparatus implementation method which collects unnecessary algae, floating mud, etc. which float or accumulate in water and the bottom of the water. Example 1 It is the top view and side view which showed the implementation method of the apparatus which collect | recovers the unnecessary algae, floating mud, etc. which float or accumulate in water and a water bottom. Example 1

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 The apparatus main body which collect | recovers the unnecessary algae, floating mud, etc. which float or accumulate in the water and the bottom of the water 2 The underwater working machine driven by the air motor and its method, and the bottom of the water purification apparatus and method using the same 3 Mother ship 4 Air compressor 5 Water surface 6 Water bottom 7 Hose 8 Collection net 9 Air supply hose 10 Compressed air discharge port 11 Secondary air discharge port 12 in the suction port 12 Suction port 13 Guide rod 14 Collection rod 15 Deposit raising nail

Claims (3)

  By providing a compressed air discharge port on the bottom of the water and discharging the compressed air perpendicular to the water surface, unnecessary algae and floating mud floating on the bottom of the water, floating mud, etc. are separated from the bottom of the water, floated up and floated on the water and the bottom of the water. Or a device that collects accumulated algae and floating mud   In the apparatus which collect | recovers the unnecessary algae, floating mud, etc. which float or accumulate on the water and the bottom of water of Claim 1, by providing a suction port directly right above the discharge port of compressed air, the discharged compressed air has its buoyancy Unnecessary algae that floated or deposited on the bottom of the water that flowed into the suction port smoothly by this, led the floating mud etc. into the suction port, and unnecessary algae floating nearby due to the water flow caused by the rising of this compressed air, A device that collects undesired algae, floating mud, etc. floating or depositing on the bottom of the water and water, characterized by sucking floating mud etc.   In the apparatus which collects the unnecessary algae, floating mud, etc. which float or accumulate on the water and the bottom of the water according to claim 1 and claim 2, the shape of the bottom area of the suction port, such as a conical shape, gradually decreases toward the top. And by providing a number of compressed air outlets in the inner week of the suction port, and discharging compressed air upward in the water surface direction, the introduced algae, floating mud, etc. that have been introduced and sucked up are further accelerated and the attached hose etc. A device that collects unnecessary algae, floating mud, etc. floating or depositing on the bottom of the water or in the bottom of the water, collected on a net, etc.