JP2019188271A - Water flow generation device - Google Patents

Abstract

To provide a water flow generation device which can powerfully release ejection fluid by entrainment of air and water by the ejection fluid.SOLUTION: A water flow generation device comprises a cylindrical part 21 in a device body 2. The cylindrical part comprises: a first cylinder part 211 which discharges ejection fluid; and a second cylinder part 212 in which the first cylinder part 211 is disposed and which releases from its end the ejection fluid from the first cylinder part 211. The second cylinder part 212, forming an opening 2123b extending from over water into water at the position of an end of the first cylinder part 211, causes the ejection fluid to entrain air and water with mixing, the air and the water spontaneously flowing into the opening 2123b formed at a base end (an entrainment part 2123) of the second cylinder part 212, without attenuating entrainment power of an ejection water flow from the first cylinder part 211.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a water flow generating device that entrains air and water by a jet fluid.

In lakes, dam lakes, ponds and the like, oxygen in the vicinity of the bottom of the water is deficient, so the water area is stirred by a water flow generator.
Various water flow generators have been developed. For example, a water flow generator is installed at the bottom of the water to generate a jet water flow, and the surrounding water is discharged by the jet water flow, or a water flow generator is installed near the water surface to generate a jet water flow. There are known things that take air out and release it.

  Further, the floating water purification apparatus described in Patent Document 1 includes a spindle-shaped floating body in which a water intake port below the water line and an air intake port above the water line are installed, and an ejector disposed inside the waterproof and sealed floating body. A pump that supplies a high-pressure water flow to the pipe, an ejector that generates suction force connected to the pump, a pipe that connects the air intake to the suction part of the ejector, and a shaft that is connected to the ejector discharge part and faces downward Structure.

  In the floating-type water purification apparatus described in Patent Document 1, not only water near the surface of the water but also air is taken in and taken by the jet water flow, and the jet water flow is discharged downward. Since air is released as water is pushed out while being mixed, it can be released vigorously.

JP2012-240040A

However, in the floating-type water purification apparatus described in Patent Document 1, the air intake installed in the spindle-shaped floating body and the suction part of the ejector are connected by piping, so that the force that is entrained by long piping is reduced. There is a risk.
In addition, water is taken in from the water intake separately from the air, and is discharged from the shaft and entrained by the jet water flow that has spread in the water, so it is entrained compared to the jet water flow that travels through the ejector section. The power to do is low.

  Then, an object of this invention is to provide the water flow generator which can discharge | release a jetting fluid vigorously by entraining air and water with a jetting fluid.

  The water flow generating device of the present invention includes a first tube portion that discharges a jet fluid, a second tube portion that has the first tube portion disposed therein, and discharges the jet fluid from the first tube portion from a tip portion. The second cylinder part is characterized in that an opening extending over the water and underwater is formed at the position of the tip part of the first cylinder part.

  According to the water flow generating device of the present invention, since the opening extending over the water and underwater is formed in the second tube portion at the position of the tip portion of the first tube portion, the opening portion is formed in the second tube portion. The water on the surface and the water on the surface naturally flow in. Therefore, air and water can be entrained without the negative pressure generated by the jet water flow from the first tube portion being attenuated.

  By providing the float part for levitating the apparatus main body, the apparatus main body is levitated by the float part even when used in the central part of a wide closed water area, so that the opening of the second cylinder part spans the water and water. Easy to place.

  If the float floats the apparatus main body at a position straddling the discharge port of the first tube portion between the water and the water, the jet fluid from the first tube portion causes water on the water surface and air above the water to flow. Can be entrained and mixed.

  When the narrow flow path is formed in the first cylinder part, the jet water flow from the first cylinder part can be further accelerated.

  The water supply device includes a water supply device that pumps water as a jet fluid to the first tube portion, and the water supply device includes a water supply tube having one end connected to a base end portion of the first tube portion, and the other end portion of the water supply tube. , A storage section in which the pump is stored and a water intake port is formed at the top, and a float unit that positions the water intake port below the water surface.

  Since the float part of the water feeding device positions the water intake of the housing part below the water surface, not only can water be fed to the water flow generator, but also floating microorganisms can be fed together. Therefore, floating microorganisms can be efficiently introduced.

  If the second cylinder part is provided with a valve for injecting a drug, a drug such as an aggregating agent for effectively collecting floating microorganisms or an algae-proofing agent is injected from the valve, together with the jet fluid. Can be released.

  According to the present invention, air and water are entrained without attenuating the negative pressure generated by the jet water flow from the first tube portion, so that the air and water are mixed with the jet water flow from the second tube portion. A jet water stream can be discharged vigorously.

It is a figure which shows the state which installed the water flow generator which concerns on embodiment of this invention in the fence. It is a top view of the apparatus main body of the water flow generator shown in FIG. It is a side view of the apparatus main body of the water flow generator shown in FIG. It is a rear view of the water flow generator shown in FIG. It is a top view of the water supply apparatus of the water flow generator shown in FIG. It is a front view of the water supply apparatus shown in FIG.

  A water flow generator according to an embodiment of the present invention will be described with reference to the drawings. In this specification, the water flow generation device will be described with the side from which the ejected fluid is discharged as the distal end side or the front side, and the side to which the ejected fluid is supplied as the proximal end side or the rear side.

The water flow generator 1 shown in FIG. 1 guides a blue cocoon, which is an example of a large amount of floating microorganisms generated in a closed water area S such as a lake, a dam lake, or a pond, into a recovery fence N that divides a part of the water area. It is installed as a floating microbial flow transfer device.
The water flow generator 1 includes a device main body 2 that discharges a jet water flow that is an example of a jet fluid, and a water supply device 3 that pumps water toward the device main body 2.
As for the water flow generator 1, the apparatus main body 2 is installed in the water surface position of the collection fence N. As shown in FIG.

(Configuration of the device body 2 of the water flow generator 1)
First, the structure of the apparatus main body 2 of the water flow generator 1 is demonstrated based on FIGS.
The apparatus main body 2 includes a cylindrical tubular portion 21 and a pair of float portions 22 that float the tubular portion 21.
The cylindrical portion 21 includes a first cylindrical portion 211 that discharges a jet water flow, and a second cylindrical portion in which the first cylindrical portion 211 is disposed at the base end portion and discharges the jet water flow from the first cylindrical portion 211 from the distal end portion. 212. The first tube portion 211 is disposed in alignment with the second tube portion 212 along the axis L1.

  The first cylindrical portion 211 includes a nozzle portion 2111 penetrating the rear end surface of the second cylindrical portion 212, a narrow flow channel 2112 connected to the rear end of the nozzle portion 2111, and a first valve provided in the narrow flow channel 2112. 2113. A water supply pipe 31 connected to the water supply device 3 (see FIG. 3) is connected to the narrow channel 2112.

  The second cylindrical portion 212 has an inner cylindrical portion 2121 that guides and discharges the jet water flow, an outer cylindrical portion 2122 that covers the narrow channel 2121n of the inner cylindrical portion 2121, and a first cylindrical portion 211 that penetrates the rear end surface. An entraining portion 2123 for positioning and fixing the tip of the first tube portion 211 in the internal entrainment space is provided.

The inner cylinder part 2121 has a reduced diameter part 2121a whose diameter gradually decreases from the inner diameter of the outer cylinder part 2122 from the rear end side, a cylindrical small diameter part 2121b formed to have the same diameter as the tip of the reduced diameter part 2121a, The enlarged diameter portion 2121c has a diameter that gradually increases, and a cylindrical large diameter portion 2121d that is formed to have the same diameter as the tip of the enlarged diameter portion 2121c and is exposed from the outer cylindrical portion 2122.
A second valve 2121e that connects the inside of the small diameter part 2121b of the inner cylinder part 2121 and the outside of the cylindrical part 21 is attached to the outer cylinder part 2122 of the second cylinder part 212.
In addition, fixing members 2122a and 2123a formed from an L-shaped plate for attaching the float portion 22 are formed on the outer peripheral surfaces of the upper portions of the outer cylinder portion 2122 and the entrainment portion 2123.

  In the entrainment part 2123 of the second cylinder part 212, openings 2123b straddling the water and the water are formed on both sides at the position of the tip part of the first cylinder part 211. The opening 2123b is notched in a rectangular shape in a side view from the position of the rear end of the reduced diameter portion 2121a to the rear end of the entraining portion 2123, and a part of the rear end surface of the entraining portion 2123 is also notched. It is formed with.

The float part 22 is an outrigger type float formed symmetrically on both sides around the axis L1 of the cylindrical part 21. The float unit 22 includes a connecting unit 221, an arm unit 222, a first floating unit 223, and a second floating unit 224.
The connecting portion 221 connects the arm portion 222 and the fixing members 2122a and 2123a of the tubular portion 21.

  The connecting portion 221 has a screw thread formed on the outer peripheral surface thereof, and is screwed into the screw portion 221a passing through the arm portion 222 and the fixing members 2122a and 2123a, and the screw portion 221a, and the arm portion 222 and the fixing member 2122a. , 2123a, and a nut portion 221b sandwiching each of them. The screw portion 221a can be a full screw or a double screw.

  The arm portion 222 is formed by bending an L-shaped plate material. The arm portion 222 is located on the tubular portion 21 and extends horizontally in the left-right direction, an inclined portion 2222 that gradually descends from both ends of the tubular side attachment portion 2221, and a horizontal direction from the inclined portion 2222. And a floating side attachment portion 2223 extending in the direction of the angle.

  The first floating portion 223 is formed by a cylindrical tube with both ends closed and hollow inside. The first floating portion 223 is provided with a fixing member 223a formed of an L-shaped plate material so as to be connected to the floating side mounting portion 2223 on the upper outer peripheral surface.

  The second floating portion 224 is attached to the first floating portion 223 through the rod-like member 223b protruding from both end surfaces of the first floating portion 223 in the longitudinal direction. In the present embodiment, a resin float is used as the second floating portion 224.

(Configuration of water supply device 3)
Next, the structure of the water supply apparatus 3 is demonstrated based on FIG. 5 and FIG.
The water supply device 3 includes a water supply pipe 31 having one end connected to the base end of the first cylinder 211 (see FIG. 2), a pump 32 having the other end connected to the water supply pipe 31, and a pump 32. The storage unit 33 is accommodated and has a water intake port 332 formed thereon, and the float unit 34 that positions the water intake port 332 that stores the pump 32 below the water surface LV. In addition, in FIG. 6, the water surface LV is shown with a dashed-dotted line.

The water supply pipe 31 may be a resin hose that is flexible, or a connection portion with the first tube portion 211 (see FIG. 2) may be a metal pipe, and the rest may be a resin hose. Good.
The pump 32 is a submersible pump that operates even when immersed in water and pumps water into the water pipe 31.
The accommodating part 33 is formed in the bottomed cylindrical shape. A reinforcing portion 331 made of an annular plate material projects over the entire periphery of the housing portion 33 from the periphery toward the inside. The opening part of the reinforcement part 331 becomes the water intake 332.

A support portion 333 for holding and fixing the pump 32 is disposed inside the housing portion 33. The support portion 333 includes an annular portion 3331 that surrounds the peripheral surface of the body portion of the pump 32, and a connection portion 3332 that extends radially from the annular portion 3331 and connects to the inner peripheral surface of the housing portion 33.
On the bottom surface of the accommodating portion 33, circular through holes are formed at four locations arranged at equal intervals in the circumferential direction around the pump 32, and each through hole has a lid portion that closes the opening. 334 is arranged.
On the outer peripheral surface of the accommodating portion 33, connecting members 335 for attaching the float portion 34 along the vertical direction are formed at four locations arranged at equal intervals in the circumferential direction.

The float part 34 floats the accommodating part 33 in which the pump 32 is accommodated so that the water intake 332 is located below the water surface.
The float portion 34 is fixed to the four first floating portions 341 arranged at equal intervals in the circumferential direction around the accommodating portion 33 and the first floating portion 341, and the float portion 34 is located further outward from the first floating portion 341. 2 floating portions 342.

The first floating portion 341 is formed of a cylindrical tube with both ends closed and hollow inside. The first floating portion 341 is provided with a connecting member 335 of the accommodating portion 33 and a fixing member 341a attached with an adjustable height position.
The second floating portion 342 includes a plate-like member 341b protruding outward from the upper end surface of the first floating portion 341, and a rod-like member 341c penetrating downward from the tip of the plate-like member 341b. 1 is attached to the floating portion 341. In the present embodiment, a resin float is used as the second floating portion 342.

(Operation and use state of water flow generator 1)
The operation and use state of the water flow generator 1 according to the embodiment of the present invention configured as described above will be described with reference to the drawings.
First, the apparatus main body 2 of the water flow generating device 1 shown in FIGS. 2 to 4 has a float portion so that the discharge port 2111a that is the tip of the nozzle portion 2111 of the first cylindrical portion 211 is positioned over the water and the water. 22 buoyancy is adjusted. In the present embodiment, the buoyancy is adjusted so that the axis L1 of the first tube portion 211 and the second tube portion 212 is located on the water surface LV.

  Next, in the water feeding device 3 shown in FIGS. 5 and 6, the buoyancy of the float portion 34 or the accommodation portion 33 is set so that the water intake port 332 of the accommodation portion 33 in which the pump 32 is accommodated is located below the water surface, particularly directly below the water surface. The height positions of the connecting member 335 and the fixing member 341a of the float portion 34 are adjusted.

The water flow generator 1 adjusted in this way is installed on the recovery fence N as shown in FIG. 1, and the pump 32 of the water feeder 3 shown in FIGS. 5 and 6 is operated.
Since the float part 34 has the water intake port 332 of the accommodation part 33 positioned below the water surface, water flows into the accommodation part 33 and also a blue seaweed that is an example of floating microorganisms floating on the water surface.
The pump 32 sucks water together with water and pumps it to the water supply pipe 31. The water pumped through the water supply pipe 31 enters the first tube portion 211 of the apparatus main body 2 shown in FIGS.

  In the water feeding device 3, since the float part 34 has the water intake port 332 of the accommodating part 33 positioned below the surface of the water, not only can water be fed to the device body 2 but also water can be fed together, so that the water can be efficiently fed. Can be recovered.

In the first cylinder portion 211, the water is accelerated by passing through the narrow channel 2112.
At this time, if air is introduced from the first valve 2113 connected to the narrow channel 2112, fine bubbles can be generated in the narrow channel 2112. Although the fine bubbles can crush the sea bream, it is desirable that the fine bubbles do not mix the air in the narrow channel 2112 and do not generate the fine bubbles in order to suppress the speed of the jet.

The water that has passed through the narrow flow path 2112 becomes a jet water flow from the nozzle portion 2111 of the first tube portion 211 and is sprayed toward the reduced diameter portion 2121a of the second tube portion 212.
The jet water flow from the nozzle part 2111 enters the reduced diameter part 2121a whose diameter is expanded to the inner diameter of the outer cylinder part 2122.

At this time, the air on the water and the water on the water surface naturally taken in and drawn in from the opening 2123b formed in the entraining portion 2123 of the second cylindrical portion 212 by the negative pressure generated by the jet water flow. Furthermore, when the water on the surface of the water is entrained, the sea cucumber floating on the surface of the water is drawn together.
Thus, since the internal space of the entraining portion 2123 functions as a mixing chamber of air and water, it naturally flows into the internal space of the entraining portion 2123 without attenuating the entraining force caused by the jet water flow from the nozzle portion 2111. Can act on the air and water.

  In addition, since the discharge port 2111a of the first cylindrical portion 211 (nozzle portion 2111) is located across the water and the water, the jet water flow from the nozzle portion 2111 is compressed while pushing the water on the water surface and the air on the water. Since it rushes into the diameter part 2121a, the water on the water surface can entrain and mix the air on the water.

The air, water, and water that are entrained from the opening 2123b enter the reduced diameter portion 2121a together with the jet water flow of the nozzle portion 2111 while mixing.
And a jet water flow passes through the small diameter part 2121b. At this time, the flocculant which is an example of the chemical | medical agent which agglomerates the auko can be thrown in from the 2nd valve | bulb 2121e, and can be mixed with a jet water flow.

Next, the jet water flow passes through the large-diameter portion 2121d while spreading at the enlarged-diameter portion 2121c, and is discharged from the cylindrical portion 21 while expanding the injection range vigorously.
In this way, the water flow generating device 1 jets the watermelon that has been sucked together with water from the water feeding device 3 together with the water that has been sucked together with water from the opening 2123b of the second cylindrical portion 212, so It can be moved to the water area partitioned by the recovery fence N.
Accordingly, the water flow generating device 1 can efficiently collect the sea urchins in the water area inside the recovery fence N without greatly disturbing the water area outside the recovery fence N.

  As described above, the water flow generating device 1 is applied to the base end portion (entraining portion 2123) of the second cylindrical portion 212 without attenuating the entraining force caused by the jet water flow from the first cylindrical portion 211 (nozzle portion 2111). It can be made to act on the air and water which naturally flowed into the formed opening 2123b. For this reason, the jet water flow can be discharged vigorously by entraining air and water while mixing them from the jet water flow.

In the water flow generation device 1 according to the present embodiment, the cylindrical portion 21 is levitated by the float portion 22, but if the opening 2123 b of the second cylindrical portion 212 can be disposed so as to straddle over water and underwater, it is cylindrical. The part 21 may be fixed by a fixing member.
However, when used in the center of a wide closed water area such as a lake or a dam lake, it is difficult to fix the apparatus main body in a state where it is located on the water surface. .

In the present embodiment, since the apparatus main body 2 (see FIGS. 2 to 4) and the water supply device 3 (see FIGS. 5 and 6) are used to collect the water-bloom which is an example of the floating microorganism, the water supply device 3 is Although the water intake 332 was positioned below the surface of the water by the float part 34, when the apparatus main body 2 and the water supply device 3 are used for agitation and aeration of the water area, the water intake 332 of the water supply device 3 is positioned above the water surface, You may remove the cover part 334 of the bottom face of the accommodating part 33, and take water from a through-hole.
Moreover, in the water flow generator 1 which concerns on this Embodiment, since it is used in order to collect | recover a water-bloom, the water which sucked the water-bloom in the water supply apparatus 3 was supplied to the apparatus main body 2, but stirring of a water area, aeration When the apparatus main body 2 is used for the above, the pump 32 of the water feeding apparatus 3 may be a compressor, and the jet fluid discharged from the first tube portion 211 may be air instead of water.

  In the present invention, since the jet fluid entrained with water and air can be released vigorously, not only agitation and aeration in the water area, but also floating water such as water-bloom generated by eutrophication of water and microorganisms constituting red tide. Applicable to the recovery of microorganisms.

DESCRIPTION OF SYMBOLS 1 Water flow generator 2 Apparatus main body 21 Cylindrical part 211 1st cylindrical part 2111 Nozzle part 2111a Discharge port 2112 Narrow flow path 2113 1st valve 212 2nd cylindrical part,
2121 Inner cylinder part 2121a Reduced diameter part 2121b Small diameter part 2121c Large diameter part 2121d Large diameter part 2121e Second valve 2121n Narrow flow path 2122 Outer cylinder part 2122a Fixing member 2123 Entraining part 2123a Fixing member 2123b Opening part 22 Floating part 221 Connection Part 221a Screw part 221b Nut part 222 Arm part 2221 Tube side attachment part 2222 Inclination part 2223 Floating side attachment part 223 First floating part 223a Fixing member 223b Rod-like member 224 Second floating part 3 Water supply device 31 Water supply pipe 32 Pump 33 Part 331 Reinforcement part 332 Water intake port 333 Support part 3331 Annular part 3332 Connection part 334 Lid part 335 Connecting member 34 Float part 341 First floating part 341a Fixing member 341b Plate-like member 341c Rod-like member 342 Second floating part N Acquisition fence S closed water area L1 axis LV water

Claims (6)

A first tube part for discharging the jet fluid;
An apparatus main body provided with a second cylinder part, the first cylinder part being disposed inside, and a second cylinder part for discharging a jet fluid from the first cylinder part from a tip part;
The second tubular portion is a water flow generating device in which an opening extending over water and underwater is formed at a position of a tip portion of the first tubular portion.   The water flow generating device according to claim 1, further comprising a float portion for levitating the device main body.   The water flow generating device according to claim 2, wherein the float unit floats the device main body at a position straddling the discharge port of the first tube portion between water and water.   The water flow generator according to any one of claims 1 to 3, wherein a narrow flow path is formed in the first cylindrical portion. A water feeding device for pumping water as a jetting fluid to the first cylindrical portion;
The water supply device includes a water supply pipe having one end connected to a base end of the first tube part, a pump connected to the other end of the water supply pipe, the pump, and a water intake at an upper part. The water flow generating device according to any one of claims 1 to 4, further comprising a formed accommodating portion and a float portion that positions the intake port below the water surface.   The water flow generating device according to any one of claims 1 to 5, wherein a valve for introducing a drug is provided in the second cylindrical portion.

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