JPWO2007066388A1 - Floating water quality improvement device - Google Patents

Abstract

An object of the present invention is to guide the flowing water generated by using an up and down flow channel formed between a trumpet-shaped duct and a funnel-shaped floating body to improve the circulation efficiency of the flowing water in the vertical direction, and touch the air to contain oxygen. The surface water is circulated in the water to effectively purify the water. A funnel-shaped floating body 2 floating on the water surface and expanding on the upper side is provided. A shaft 6 extends downward through the water surface to the floating body 2 and is attached to a lower end of the shaft 6 connected to a driving device. A propeller 7 that rotates around the axis is attached, a duct 3 having an upper portion extending in a trumpet shape is provided around the funnel-shaped floating body 2, and the lower end side of the duct 3 is extended below the propeller 7 to form a funnel-shaped floating body An annular up-down flow channel 9 is formed between the outer peripheral side surface of 2 and the inner peripheral side surface of the duct 3, and a plurality of rectifying plates 5 are provided in the radial direction of the duct 3.

Description

  The present invention rotates a propeller attached to the tip of a shaft that floats on the water surface and extends into water to generate an upward or downward circulating water flow to supply air into the water or seawater. The present invention relates to a floating water quality improvement device for purifying fresh water or seawater in closed water areas such as bays, estuaries, dams, reservoirs, reservoirs, and farms.

  For example, in closed waters such as lakes, bays, estuaries, dams, reservoirs, reservoirs, and farms, there is almost no flow of water, so oxygen is not sufficiently supplied to the water below the surface of the water and the bottom of the water, making the water cloudy It becomes easy. For this reason, for example, a technique for purifying water by supplying oxygen into water using an aeration apparatus, a stirring apparatus, an oxygen supply pump, or the like is known and has been partially put into practical use.

However, in a technology for purifying water by supplying air or oxygen into water or seawater in a closed water area using a conventional aeration apparatus, agitation apparatus, oxygen supply pump, or the like, the apparatus becomes large. In addition, the structure is complicated, energy consumption is large, the cost is high, and there is a problem in terms of efficiency.

  Therefore, the present applicant has previously proposed an apparatus created in order to solve the above-described problems with Patent Document 1. This device guides the flowing water generated by using the up-down flow channel formed between the trumpet-shaped duct and the funnel-shaped floating body, improves the circulation efficiency of the flowing water in the vertical direction, and touches the air to generate oxygen. The water on the surface of the water that has been contained is made to flow as a radiation flow and is circulated in the water so that the water can be efficiently purified.

JP 11-47794 A

  The present invention also solves the above-described problems, and further improves the above-described apparatus so that the radial flow is given to the up-down flow so that the radiation distance is increased. .

  In order to achieve the above object, the present invention provides a funnel-shaped floating body that floats on the water surface and expands on the upper side, and extends through the water surface to the floating body so that a shaft extends downward and is connected to a drive device. A propeller that rotates around the axis is attached to the lower end of the shaft, and a duct with an upper portion extending in a trumpet shape is provided around the funnel-shaped floating body. The lower end of the duct extends to the lower side of the propeller, and the funnel-shaped floating body Floating type that forms an annular up-down flow channel between the outer peripheral side surface of the duct and the inner peripheral side surface of the duct, causes the up-down flow water in the up-down flow water channel by a rotating propeller, and generates up-down circulating water flow in the water inside and outside the duct In the water quality improving apparatus, a plurality of rectifying plates are provided in a radial direction of the duct.

  Here, as a preferred embodiment, a solar cell panel is preferably provided on the floating body in order to supply electric power to the shaft driving device.

1 is a perspective view of a floating water purification apparatus according to the present invention. (A) of the floating body of the floating-type water purification apparatus which concerns on this invention is a top view, (b) is the sectional view on the AA line of (a). (A) of the duct of the floating-type water purification apparatus which concerns on this invention is a top view, (b) is the BB sectional drawing of (a). It is a principal part expanded sectional view which shows the shaft part of the floating type water purification apparatus which concerns on this invention. It is side surface sectional drawing which shows the state which installed the floating type water quality improvement apparatus in the lake.

  Hereinafter, embodiments of the present invention will be described in detail based on the following examples.

  In the figure, the floating water quality improvement apparatus 1 floats on the surface of the water, and the propeller 7 in the water rotates to generate a water flow in the vertical direction and to generate a circulating flow in the vertical direction around it. Water contained in the water surface is circulated in the water to supply oxygen into the water to purify the water.

  The floating water quality improvement device 1 is mainly composed 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. Yes.

  The floating body 2 floats on the surface of the water. For example, the inside of the body 2 is hollow or filled with a material having a specific gravity smaller than that of the water. It has a funnel-like inverted conical curved shape.

  For this reason, the water around the floating water quality improving apparatus 1 is raised or lowered along the funnel-shaped side peripheral surface. That is, the water in the water spreads to the surroundings as it rises, or the water on the surrounding water surface that descends becomes a direct downward flow in the central portion as it descends.

  A shaft 6 is attached to the floating body 2 in the vertical direction. The shaft 6 extends through the center hole 2a of the funnel-shaped floating body 2 in the vertical direction. The shaft 6 is attached so as to penetrate the water surface, that is, the lower end of the shaft 6 extends to the lower end of the most narrowed floating body 2 of the funnel-shaped floating body 2, and the lower end of the shaft 6 is The propeller 7 is attached.

  The propeller 7 has a function of rotating in the horizontal direction around the shaft 6 and generating flowing water in the vertical direction. The propeller 7 can freely rotate forward and backward. For example, when the propeller 7 rotates forward, the upward flowing water is generated, and when the propeller 7 rotates reversely, the downward flowing water can be generated.

  The upper end of the shaft 6 that passes through the center hole 2 a of the floating body 2 in the vertical direction is connected to a driving device (not shown) installed on the upper end central plate 2 c in the floating body 2. That is, the upper end of the shaft 6 is linked to a brushless motor (not shown) of the drive device via a speed reducer, and the shaft 6 rotates by the drive force from the drive device, and the propeller at the lower end of the shaft 6 is driven. 7 is rotated to generate water flowing in the vertical direction.

  The drive device is housed inside, for example, a waterproof box-shaped machine casing 8 to prevent the drive device from being damaged by water or seawater. In addition, a solar cell panel 4 is installed as an electric power source for supplying electric power to the driving device on the upper surface flat portion 2b of the floating body 2 above the box-shaped machine casing 8 that houses the driving device. For this reason, it is not necessary to connect a cable for supplying electric power from the land to the floating water quality improvement device 1 and there is no obstructive cable. Therefore, the floating water quality improvement device 1 is placed on the water surface at a desired position away from the land. Can be floated and operated.

  Around the outside of the funnel-shaped floating body 2 and the propeller 7, a duct 3 having a predetermined gap and an upper portion expanding in a trumpet shape is attached. And the up-down flow channel 9 is formed in an annular shape between the inner peripheral side surface of the duct 3 whose upper portion extends in a trumpet shape and the outer peripheral side surface of the funnel-shaped floating body 2 located inside the duct 3. Here, a plurality of rectifying plates 5 are provided in the radial direction of the duct 3 so that the upward / downward flow has directivity in the radial direction so as to increase the water discharge distance. When this baffle plate 5 is not provided, the up and down flow generates a water flow in the tangential direction of the circumference of the duct, but the water discharge distance is reduced.

  The duct 3 whose upper portion extends in a trumpet shape has a lower end extending below the position of the propeller 7 attached to the lower end side of the funnel-shaped floating body 2, and the underwater at a deep position from the center hole 3 a. The water on the water surface can be fed and circulated up to the bottom, or the water in the deep position can be circulated up to the water surface.

  In particular, when the lower end of the duct 3 whose upper portion extends in a trumpet shape extends further downward than the position of the propeller 7, the suction and discharge locations formed at the upper end and the lower end of the duct 3 are determined. They can be separated and the interference between suction and discharge can be suppressed.

  The duct 3 is connected to the floating body 2 by a plurality of connecting members 10 so that the upper end of the duct 3 that extends in a trumpet shape is slightly below the water surface. The plurality of connecting members 10 are attached radially at equal intervals in the middle of the up-down flow channel 9. As the plurality of connecting members 10, members having a shape that does not become resistance to flowing water that moves up and down the up-down flow channel 9, for example, pin-shaped members are used.

  Since the upper end of the duct 3 and its trumpet shape sinks slightly below the water surface, when the propeller 7 is rotated so as to generate downward flowing water, it touches the air near the water surface and releases oxygen. Only the contained water can be efficiently sucked into the up-down flow channel 9 inside the duct 3 and sent into deep water.

  An attachment ring 3 b for connecting the mooring rope 11 is attached to the outer peripheral side surface of the duct 3. The mooring rope 11 has one end connected to the mounting ring 3b and the other end connected to an anchor 12 or the like sinking to the bottom of the water.

  Next, the operation based on the configuration of the embodiment of the invention will be described below. For example, water is transported to a closed closed water area such as a lake, bay, estuary, dam, reservoir, reservoir, farm, etc., and the floating water quality improvement device 1 is floated on the surface of the water.

  Then, one end of the mooring rope 11 is connected to the mounting hole 3b on the outer peripheral side surface 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 other end of the mooring rope 11 is connected. The anchor 12 is submerged in the water bottom and fixed. Thereafter, the floating water quality improvement apparatus 1 is driven.

  When the solar cell 4 is attached to the floating water quality improvement apparatus 1, the electric power obtained by the solar cell 4 is supplied to the drive device. In this case, there is no need to connect a cable for supplying power from the land to the floating water quality improvement device 1 and there is no obstructive cable, so the floating water quality improvement device can be freely placed on the water surface at an arbitrary position away from the land. Can be floated and operated. It is also possible to prevent the cable from being caught by a part of the apparatus and hindering the work. Of course, when the solar cell 4 is not attached or at night, power can be supplied by connecting to a commercial power supply on land with a cable. ,

  In the drive device that is supplied with electric power, the motor of the drive device is driven, and the driving force of the motor rotates the shaft 6 around one direction via the speed reducer. When the shaft 6 rotates, the propeller 7 attached to the lower end of the shaft 6 rotates around one direction.

  When the rotation of the propeller 7 around one direction rotates the water on the water surface into the water, that is, when it rotates so as to generate downflowing water, the water on the water surface containing oxygen comes close to the water surface. The upper end of the duct 3 where the upper end is located flows into an annular up-down flow channel 9 formed between the inner peripheral side surface of the duct 3 and the outer peripheral side surface of the funnel-shaped floating body 2.

  The water on the water surface containing oxygen that has flowed into the up-down flow channel 9 descends in the up-down flow channel 9 by the down-flow water generated by the rotational force of the propeller 7, and the duct 3 extended downward It is sent into deep water from the lower end. Since the water on the surface of the water sent into this deep water contains a large amount of oxygen, a large amount of oxygen can be supplied into the deep water with a shortage of oxygen. It becomes possible to purify the dirt.

  In this way, if the propeller 7 continues to rotate, circulation of downflow water that feeds water on the oxygen-containing water surface into the water occurs, and if water on the oxygen-containing water surface continues to be supplied into deep water, the duct The water around the outside of the pipe 3 gradually rises, and downflow water is generated inside the duct 3 and upflow water is generated outside the duct 3.

  In this way, up-and-down circulating water flows inside and outside the duct 3, and circulating water that supplies water on the water surface containing oxygen into the deep water is generated around the floating water quality improvement device 1, and the water in the closed water area is Purification is achieved efficiently.

  On the other hand, when the direction of rotation of the propeller 7 around one direction rotates in the opposite direction to the above, the water is sent to the surface of the water, that is, in order to generate upward flowing water, Underwater dirty water which hardly contains is an annular up-down flow channel formed between the inner peripheral side surface of the duct 3 and the outer peripheral side surface of the funnel-shaped floating body 2 from the central hole 3a at the lower end of the submerged duct 3. 9 flows into the lower part.

  The dirty water in the water containing almost no oxygen flowing into the lower part of the up-down flow channel 9 rises in the up-down flow channel 9 by the up-flow water generated by the rotational force of the propeller 7 and spreads in the upper trumpet shape. It is sent out from the upper end of the duct 3 onto the water surface. The dirty water sent to the surface of the water touches the air to absorb oxygen. In this way, dirty water in water that contains little oxygen is sent out onto the water surface and purified by absorbing oxygen.

  In this way, when the propeller 7 continues to rotate, circulation of upward flowing water that sends out dirty water containing almost no oxygen to the surface of the water occurs, so that the dirty water containing little oxygen is on the surface of the water. As the water continues to be pumped out, the water around the outside of the duct 3 gradually descends to generate upward flowing water inside the duct 3 and downward flowing water outside the duct 3.

  In this way, up-and-down circulating water flows inside and outside the duct 3, and circulating water that supplies water on the water surface containing oxygen into the deep water is generated around the floating water quality improvement device 1, and the water in the closed water area is Purification is achieved efficiently.

  In this way, up-and-down circulating water is generated inside and outside the duct 3, and circulating water that sends out dirty water containing almost no oxygen to the surface of the water is generated around the floating water quality improvement device 1. Water purification is achieved efficiently.

  The present invention is not limited to the embodiment of the invention described above, and it goes without saying that various modifications can be made without departing from the gist of the invention.

  As described above, according to the floating water quality improvement apparatus according to the present invention, water containing oxygen on the water surface can be fed into the water through the up-down flow channel, or dirty water containing almost no oxygen through the up-down flow channel. Water can be pumped onto the surface of the water to absorb oxygen in the air, whereby water purification in the closed water area can be efficiently achieved.

  The low oxygen state water rising from the bottom of the water system by the convection agitation of the apparatus of the present invention takes in oxygen from the air and circulates near the water surface. As a result, microorganisms that prefer oxygen are activated and decompose various sludge-causing substances. In addition, the increase in the number of microorganisms becomes protozoan food, which further becomes food for small fish and aquatic insects, and the entire ecosystem of lakes is activated and diversified. That is, the activation of microorganisms by oxygen and the virtuous cycle of the food chain can be achieved.

  Ultraviolet rays contained in sunlight suppress the growth of microorganisms that spoil water. When convection stirring is carried out by the apparatus of the present invention, the rising water is effectively exposed to sunlight, and the sterilization action by ultraviolet rays prevents water from decaying. Can be prevented.

  When the amount of dissolved oxygen decreases, phosphorus fixed in water elutes as phosphate ions and becomes a nutrient source for blue sea urchin (chlorophyll a) and green algae to promote growth. However, according to the device of the present invention, oxygen is sent to the bottom of the lake, so that elution of phosphorus can be suppressed and generation and growth of blue-green algae and green algae can be suppressed. That is, phosphorus elution can be suppressed by supplying oxygen to the bottom of the lake.

Claims (2)

A funnel-like floating body that floats on the water surface and expands on the upper side is provided, a shaft that extends through the water surface and extends downward is provided on the floating body, and a propeller that rotates around the axis is connected to the lower end of the shaft connected to the driving device. Install a duct with a trumpet upper part around the funnel-shaped floating body, and extend the lower end of the duct to the lower side of the propeller, between the outer peripheral side of the funnel-shaped floating body and the inner peripheral side of the duct In the floating water quality improvement device that forms an annular up-down flow channel, raises up-down flow water in the up-down flow channel by a rotating propeller, and generates up-down circulation flow water in water inside and outside the duct, Floating water quality improvement device characterized by providing a flow straightening plate. The floating water quality improvement apparatus according to claim 1, wherein a solar battery for supplying electric power to the shaft driving device is provided on the floating body.

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