WO2007066388A1

WO2007066388A1 - Floating-type water-quality improvement device

Info

Publication number: WO2007066388A1
Application number: PCT/JP2005/022438
Authority: WO
Inventors: Kenji Masaki
Original assignee: Masaki Envec Co., Ltd.
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-06-14
Also published as: JPWO2007066388A1; JP4687999B2; CN101198553A

Abstract

[PROBLEMS] A floating-type water-quality improvement device in which flowing water produced using a vertical water flow passage formed between a trumpet-shaped duct and a funnel-shaped floating body is guided to enhance circulation efficiency of a water flow in the up-down direction. As a result, surface water containing oxygen by being in contact with air is circulated in the water to efficiently clean it. [MEANS FOR SOLVING PROBLEMS] The floating-type water-quality improvement device has the floating body (2) floating on a water surface and formed into a funnel-like shape expanded on the upper side. The floating body (2) is provided with a downwardly extending shaft (6) penetrating the water surface. A propeller (7) rotating about its axis is provided at the lower end of the shaft (6) connected to a drive device. The duct (3) whose upper portion is expanded in a trumpet-shape is provided around the floating body (2). The lower end side of the duct (3) is extended to below the propeller (7). The vertical water flow passage (9) is formed between the outer circumferential surface of the floating body (2) and the inner circumferential surface of the duct (3). Flow straightening plates (5) are arranged at the duct (3) in the radial direction of the duct.

Description

Specification

Floating water quality improvement device

Technical field

[0001] The present invention rotates a propeller attached to the tip of a shaft that floats on the water surface and extends into the water to generate an upward or downward circulating water flow to supply air into the water or seawater. This invention relates to a floating water quality improvement device that purifies freshwater or seawater in closed water areas such as lakes, bays, estuaries, dams, reservoirs, ponds, and fish farms.

Background technology

[0002] For example, in closed water bodies such as lakes, bays, estuaries, dams, reservoirs, ponds, and aquaculture farms, there is almost no water flow, so oxygen is not sufficiently supplied to the water below the water surface and to the bottom side. Water tends to become cloudy. For this reason, techniques for purifying water by supplying oxygen into water using, for example, an aeration device, a stirring device, an oxygen supply pump, etc. are known, and some have been put into practical use.

Disclosure of invention

[0003] However, there is no technology for purifying water by supplying air or oxygen to water in closed water bodies or seawater using conventional devices such as aeration equipment, stirring equipment, and oxygen supply pumps. However, the equipment is large, has a complicated structure, consumes a lot of energy, is expensive, and has problems in terms of efficiency.

[0004] Therefore, the present applicant has previously proposed a device devised in Patent Document 1 to solve the above-mentioned problems. This device uses an up-and-down flow channel formed between a trumpet-shaped duct and a funnel-shaped floating body to guide the generated water, increasing the circulation efficiency of the flowing water in the vertical direction, and releasing oxygen when it comes into contact with the air. It is designed to efficiently purify water by circulating the water on the surface of the water as a radiation stream and circulating it in the water.

[0005] Patent document 1: Japanese Patent Application Laid-Open No. 11-47794

[0006] The present invention also solves the above-mentioned problems, and further improves the above-mentioned device so that the ascending and descending flow has directivity in the radial direction and the radiation distance is increased. It's something. [0007] In order to achieve the above object, the present invention provides a funnel-shaped floating body that floats on the water surface and has an expanded upper side, a shaft that penetrates the water surface and extends downward, and a drive device. A propeller that rotates around the axis is attached to the lower end of the shaft connected to the shaft, a duct with a trumpet-shaped upper part is installed around the funnel-shaped floating body, and the lower end of the duct extends below the propeller. , an annular ascending and descending flow channel is formed between the outer circumferential side of the funnel-shaped floating body and the inner circumferential surface of the duct, and a rotating propeller causes rising and descending water in the ascending and descending flow channel, causing upward and downward circulation of water in the water inside and outside the duct. The floating water quality improvement device is characterized in that a plurality of rectifying plates are provided in the radial direction of the duct.

[0008] Here, as a preferred embodiment, solar panels are provided on the floating body to supply power to the drive device of the shaft.

Brief description of the drawing

[0009] FIG. 1 is a perspective view of a floating water purification device according to the present invention.

[Figure 2] (a) is a plan view of the floating body of the floating water purification device according to the present invention, and (b) is a sectional view taken along line A--A in (a).

[Figure 3] (a) is a plan view of the duct of the floating water purification device according to the present invention, and (b) is a sectional view taken along line B--B in (a).

[Fig. 4] An enlarged sectional view of the main part showing the shaft portion of the floating water purification device according to the present invention.

[Figure 5] A side sectional view showing a floating water quality improvement device installed in a lake.

BEST MODE FOR CARRYING OUT THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail based on Examples shown below.

Example

[0011] In the figure, a floating water quality improvement device 1 floats on the water surface, and a propeller 7 in the water rotates to generate a water flow in the vertical direction, and a circulation flow is generated in the vertical direction around the propeller 7, which is exposed to air. This system circulates surface water containing oxygen into the water, supplying oxygen to the water and purifying the water.

[0012] The floating water quality improvement device 1 consists of a funnel-shaped floating body 2, a shaft 6 attached to the floating body 2, a propeller 7 attached to the lower end of the shaft 6, and a duct 3 provided around the floating body 2. structure has been completed.

[0013] The floating body 2 floats on the water surface, and is, for example, hollow inside or filled with a material whose specific gravity is lower than that of water. It has a funnel-shaped inverted conical curved shape that expands around the circumference as it goes.

[0014] Therefore, the water around the floating water quality improvement device 1 rises or falls along the funnel-shaped side circumferential surface. In other words, as the water in the water rises, it spreads to the surrounding area, or as the water on the surrounding water surface descends, it flows directly downwards from the center. .

[0015] A shaft 6 is attached to the floating body 2 in the vertical direction. The shaft 6 passes through the center hole 2a of the funnel-shaped floating body 2 and extends in the vertical direction. The shaft 6 is installed so as to penetrate the water surface, that is, the lower end of the shaft 6 extends to the lower end of the narrowest funnel-shaped floating body 2, and the lower end of the shaft 6 extends to the narrowest part of the funnel-shaped floating body 2. Propeller 7 is installed.

[0016] The propeller 7 has the function of rotating horizontally around the shaft 6 and generating water flowing in the vertical direction. Propeller 7 can rotate forward and backward; for example, when propeller 7 rotates forward, it can generate upward flowing water, and when propeller 7 rotates in reverse, it can generate downward flowing water!/, Ru.

[0017] The upper end of the shaft 6, which vertically passes through the center hole 2a of the floating body 2, is connected to a drive device (not shown) installed on the upper center plate 2c inside the floating body 2. That is, the upper end of the shaft 6 is interlocked and connected to a brushless motor (not shown) of the drive device via a reducer, and the shaft 6 rotates due to the driving force from the drive device, and the lower end of the shaft 6 rotates. Rotate the spatula 7 to cause water to flow vertically.

[0018] The drive device is housed inside a waterproof box-shaped machine frame 8, for example, to prevent the drive device from being damaged by water, seawater, or the like. Furthermore, a solar panel 4 is installed as a power source for supplying power to the drive device on the upper flat surface portion 2b of the floating body 2 at the top of the box-shaped machine frame 8 that houses the drive device. Therefore, there is no need to connect cables that supply land power to this floating water quality improvement device 1.There is no need to connect the floating water quality improvement device 1 to the floating water quality improvement device 1. let it work It is possible to do that.

[0019] A duct 3 with a trumpet-shaped upper part is installed around the outside of the funnel-shaped floating body 2 and the propeller 7 with a certain gap therebetween. An ascending and descending water passage 9 is formed in an annular shape between the inner circumferential side surface of the duct 3 whose upper part expands into a trumpet shape and the outer circumferential side surface of the funnel-shaped floating body 2 located inside the duct 3. Here, a plurality of baffle plates 5 are provided in the radial direction of the duct 3, so that the ascending and descending flow has directivity in the radial direction and the water discharge distance is increased. If this baffle plate 5 is not provided, the rising and falling flow will generate a water flow in the tangential direction of the duct's circumference, but the water discharge distance will become smaller.

[0020] The duct 3, whose upper part expands into a trumpet shape, has its lower end extending below the position of the propeller 7 attached to the lower end of the funnel-shaped floating body 2, and extends from its center hole 3a. It is now possible to send and circulate water on the surface of the water deep into the water, and to circulate water in deep water up to the surface!/,ru.

[0021] In particular, when the lower end force of the duct 3 whose upper part expands into a trumpet shape extends further downward than the position of the propeller 7, the suction and discharge formed at the upper and lower ends of the duct 3. It can be separated by separating the parts, and interference between suction and discharge can be suppressed.

[0022] The duct 3 is connected to the floating body 2 by a plurality of connecting members 10 so that the trumpet-shaped upper end thereof is slightly sunk below the water surface. A plurality of connecting members 10 are installed radially in the middle of the ascending/descending waterway 9 at equal intervals. The plurality of connecting members 10 are members shaped so as not to create resistance to the flowing water moving up and down the ascending/descending channel 9, such as pin-shaped members.

[0023] The trumpet-shaped upper end of the duct 3 is located slightly below the water surface, so when the propeller 7 is rotated to produce a downward flow of water, it touches the air near the water surface. The duct efficiently circulates only oxygen-containing water by sucking it into the ascending and descending flow channel 9 inside the duct 3 and deep! , can be sent underwater.

[0024] An attachment ring 3b for connecting the mooring rope 11 is attached to the outer peripheral side surface of the duct 3. One end of the mooring rope 11 is connected to this attachment ring 3b, and the other end is connected to an anchor 12 that has sunk to the bottom of the water.

[0025] Next, operations based on the configuration of the embodiment of the invention described above will be described below. for example The water is transported to a closed body of water such as a lake, bay, estuary, dam, reservoir, pond, or fish farm, and the floating water quality improvement device 1 is floated on the surface of the water.

[0026] Then, one end of the mooring rope 11 is connected to the mounting hole 3b on the outer peripheral side of the duct 3 of the floating water quality improvement device 1, the other end of the mooring rope 11 is connected to the anchor 12, and the mooring rope 11 is Anchor 12, with the other end connected, is sunk to the bottom of the water and fixed. Then, the floating water quality improvement device 1 is activated.

[0027] When the solar cell 4 is attached to the floating water quality improvement device 1, the power obtained by the solar cell 4 is supplied to the drive device. In this case, there is no need to connect the cable that supplies power from land to this floating water quality improvement device 1. Since there are no cables that get in the way, the floating water quality improvement device can be freely floated on the water surface at any location away from land. It can be activated by It also prevents the cable from getting caught on a part of the equipment and interfering with work. Of course, if solar cells 4 are not installed or at night, power can be supplied by connecting to a commercial power source on land using a cable. ,

[0028] When the drive device is supplied with electric power, the motor of the drive device is driven, and the driving force of the motor rotates the shaft 6 in one direction via the reduction gear. When the shaft 6 rotates, the propeller 7 attached to the lower end of the shaft 6 rotates in one direction.

[0029] When the rotation of the propeller 7 in one direction sends the water on the surface of the water into the water, that is, when it rotates so as to cause downward flow of water, the water on the water surface that has come into contact with the air and contains oxygen will The water flows over the upper end of the duct 3, the upper end of which is located near the water surface, into the annular ascending and descending flow channel 9 formed between the inner circumferential side of the duct 3 and the outer circumferential side of the funnel-shaped floating body 2.

[0030] The oxygen-containing water on the water surface that has flowed into the vertical flow channel 9 descends within the vertical flow channel 9 due to the downward flowing water generated by the rotational force of the propeller 7, and is spread downward. The lower end of the installed duct 3 is sent out deep into the water. At this depth, water on the surface of the water that is sent underwater contains a large amount of oxygen, so at depths where oxygen is lacking, a large amount of oxygen can be supplied into the water, and the action of this oxygen It becomes possible to clean dirt from deep water.

[0031] In this way, as the propeller 7 continues to rotate, a circulation of downward water occurs that sends the water on the water surface containing oxygen into the water, and the water on the water surface containing oxygen flows deep! continues to be supplied to When the duct 3 is opened, the water around the outside of the duct 3 gradually rises, causing downward flowing water inside the duct 3 and upward flowing water outside the duct 3.

[0032] In this way, upward and downward circulating water occurs inside and outside the duct 3, and circulating water that supplies oxygen-containing water on the water surface to the depths is generated around the floating water quality improvement device 1, and the closed water Water purification in water bodies is efficiently achieved.

[0033] On the other hand, when the rotation direction of the propeller 7 in one direction is rotated in the opposite direction to the above-mentioned direction and rotated in a direction that sends out water in the water onto the water surface, that is, causes upward flow of water, The dirty water in the water, which contains almost no oxygen, flows from the center hole 3a at the lower end of the underwater duct 3 to the ring formed between the inner circumferential side of the duct 3 and the outer circumferential side of the funnel-shaped floating body 2. The rise and fall of the waterway flows into the lower part of 9.

[0034] Dirty water containing almost no oxygen that has entered the lower part of the ascending/descending channel 9 rises within the ascending/descending channel 9 due to the upward flow generated by the rotational force of the propeller 7, and flows up into the upper part of the ascending/descending channel 9. The force at the upper end of duct 3, which has expanded into a trumpet shape, is also sent out onto the water surface. The dirty water that is pumped to the surface comes into contact with the air and absorbs oxygen. In this way, the dirty water, which contains almost no oxygen, is pumped to the surface and becomes sludge by absorbing oxygen.

[0035] In this way, as the propeller 7 continues to rotate, a circulation of upward flowing water occurs that sends the water in the dirty water, which contains almost no oxygen, to the surface of the water. As water continues to be pumped out onto the water surface, the water around the outside of duct 3 gradually descends, causing upward flow of water inside duct 3 and downward flow of water outside duct 3.

[0036] In this way, upward and downward circulating water occurs inside and outside the duct 3, and circulating water that supplies oxygen-containing water on the water surface to the depths is generated around the floating water quality improvement device 1, and the closed water Water purification in water bodies is efficiently achieved.

[0037] In this way, upward and downward circulating water occurs inside and outside the duct 3, and circulating water that sends dirty water containing almost no oxygen to the water surface is generated around the floating water quality improvement device 1, Water purification in closed bodies of water is efficiently achieved.

[0038] Note that this invention is not limited to the embodiments of the invention described above, and it goes without saying that various modifications can be made within the scope without departing from the gist of this invention. Industrial applicability

[0039] As described above, according to the floating water quality improvement device according to the present invention, oxygen-containing water on the water surface can be sent into the water through the up-and-down flow channel, or water containing most of the oxygen can be sent through the up-and-down flow channel into the water. In addition, contaminated water can be pumped out to the water surface to absorb oxygen from the air, thereby efficiently purifying water in closed bodies of water.

[0040] Due to the convective agitation of the apparatus of the present invention, the bottom force of the water system rises, and the hypoxic water takes in oxygen from the air near the water surface and circulates. As a result, oxygen-loving microorganisms are activated and decompose various sludge-causing substances. In addition, the increase in microorganisms becomes food for protozoa, which in turn becomes food for fish and aquatic insects, activating and diversifying the entire lake ecosystem. In other words, oxygen can activate microorganisms and create a virtuous cycle in the food chain.

[0041] Ultraviolet rays contained in sunlight suppress the growth of microorganisms that spoil water. When convective stirring is performed using the device of the present invention, the rising water is effectively exposed to sunlight, and the sterilization effect of ultraviolet rays prevents the water from rotting, and is effective in suppressing bad odors. Corruption can be prevented.

[0042] When the amount of dissolved oxygen decreases, phosphorus fixed in water is eluted as phosphate ions, which serve as a nutritional source for chlorophyll a and green algae and encourage their growth. However, according to the device of the present invention, oxygen is sent to the bottom of the lake, so phosphorus elution can be suppressed, and the generation and proliferation of green algae and green algae can be suppressed. In other words, phosphorus elution can be suppressed by supplying oxygen to the lake bottom.

Claims

The scope of the claims

[1] A funnel-shaped floating body that floats on the water surface and expands on the upper side is provided, and a shaft is installed on the floating body that penetrates the water surface and extends downward, and the lower end of the shaft connected to a drive device rotates around its axis. Attach a propeller to the surface of the funnel-shaped floating body, install a duct with a trumpet-shaped upper part around the funnel-shaped floating body, extend the lower end of the duct to below the propeller, and connect the outer circumferential side of the funnel-shaped floating body and the inner circumferential side of the duct. In a floating water quality improvement device that forms an annular ascending and descending waterway between the duct and a rotating propeller to cause rising and falling water in the ascending and descending waterway, producing ascending and descending circulating water in the water inside and outside the duct, A floating water quality improvement device characterized by multiple rectifying plates installed in the radial direction.

[2] The floating water quality improvement device according to claim 1, wherein the floating body is provided with a solar cell that supplies power to the drive device of the shaft.