JP3464134B2 - Bottom water pumping equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom layer water pumping system which contributes to improvement of fishing grounds.

[0002]

2. Description of the Related Art In shallow waters such as seas, lakes and ponds, stratification occurs especially in the summer, and convection between surface water and bottom water hardly occurs. In the bottom layer, low-density and dense oxygen-free water masses are accumulated, and organisms such as plankton cannot grow in this poor-anoxic water mass. However, it has abundant nutrients. On the other hand, surface water has a low nutrient content but is in an oxygen-rich state. Therefore, if the bottom water is pumped up and mixed with the surface water, abundant nutrients can be diffused into the water mass with a lot of oxygen, and the quality as a fishing ground is enhanced.

[0003]

For this purpose, there is no pumping system that pumps bottom water to the surface, but it always operates stably regardless of fluctuations in tide level, tidal current, or wave motion. Moreover, in order to pump water from a certain height of the bottom of the water and keep it at a fixed position, a considerably large-scale facility was required. The present invention solves such a problem and has a simple structure and enables constant height pumping and fixed position detention.

[0004]

Under the above problems, the present invention provides an underwater floating body which is connected to an anchor that stays at the bottom of the water, forms a suction port at a position where the bottom of the bottom of the water is constant, and floats in the water at the top. A lower structure consisting of an attached pumping pipe, and a water guiding pipe suspended from a floating body floating above the water surface with a discharge port at a certain depth below the water surface, and slidably inserted into the pumping pipe below. And a superstructure consisting of a forcibly driven pumping pump connected to the bottom layer water pumping device.

By taking the above means, even if there is a change in the tide level, the pumping pipe of the lower structure and the water pipe of the upper structure slide against each other and respond to this, and the intake position of the bottom layer water, The discharge position does not change. In addition, even when tidal currents and waves, the anchorage of the lower structure and the underwater floating body keep the pumping pipe upright and upright, so no additional mooring structure is required. So to speak, detainability can be secured by one-point mooring.

Further, according to the present invention, in the above means, the driving machine for driving the pumping pump is suspended from the floating body to a predetermined position on the water surface by at least two suspension lines arranged around the driving machine. Provide the means.

By this means, it is possible to secure the verticality of the driving machine and the water guiding pipe with a simple structure, and there is no need for a structure for blocking the reaction force due to the driving of the driving machine. That is, since a torque is applied to the driving machine in the opposite direction to the driving direction, it is usually necessary to prevent this by an appropriate method. According to this means, however, the driving machine is twisted by the twisting of the suspension line. The rise can balance this reaction force and maintain balance.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a bottom layer water pumping apparatus showing an example of the present invention. This bottom layer water pumping apparatus comprises a lower structure 10 constituting a lower part of the device and an upper structure 12 constituting an upper part thereof.

The lower structure 10 comprises an anchor 16 placed on the water bottom 14, and a pumping pipe 22 having an underwater floating body 20 which is connected to the anchor 16 at the bottom by a chain 18 or the like and which floats in water. The pumping pipe 22 is made of a rigid body, and the bottom surface of the pumping pipe 22 is open to serve as a suction port 24. Therefore, the height of the water intake can be determined by appropriately setting the length of the chain 18. Pumping pipe 2
2 is kept upright in water by the underwater floating body 20.

The upper structure 12 comprises a pumping pump 32 which is suspended from a floating body 28 floating above the water surface 26, and a water guiding pipe 30 slidably fitted into the pumping pipe 22 is connected to the lower part thereof. The pumping pump 32 has a discharge port 34 for discharging the water coming up through the water pipe 30, and the discharge port 34 has a certain depth from the floating body 28, that is, the water surface 2
It is set at the position of 6 lower fixed depth.

FIG. 2 is an enlarged cross-sectional view of the upper structure 12. The pumping pump 32 used here may have any structure as long as it can secure a required lift, for example, a casing. It is conceivable that a rotating impeller or the like (not shown) is housed in 35. The pumping pump 32 of this example is driven by a driving machine 42 mounted on a base plate 40 that is suspended above the water surface 26 by a suspension line 38 from a platform 36 that is installed on the floating body 28. It was

The above structure is an example, and the driving machine 42
Alternatively, the pumping pump 32 may be directly fixed to the floating body 28. However, in this case, the floating body 28
The pumping pump 32 and the water pipe 30 connected to the pumping pump 32 also move or tilt in accordance with the movement and tilt of the pumping pipe 22.
It can be said that it is preferable to secure straightness with

As described above, when the driving machine 42 is driven, the pumping pump 32 sucks the bottom layer water from the suction port 24, and the discharge port 34 through the pumping pipe 22 and the water guiding pipe 30.
It discharges to the surface layer and reaches its purpose. In this case, if the tide level fluctuates, the floating body 28 moves up and down, and the water conduit 30 moves up and down accordingly.

On the other hand, since the pumping pipe 22 remains at a constant height, the water guiding pipe 30 slides up and down in the pumping pipe 22 to absorb the height change. At this time, if there is a twist between the pumping pipe 22 and the water guiding pipe 30, the water guiding pipe 30 cannot slide in the pumping pipe 22 and the floating body 28 cannot respond to the change in the tide level, but Having sufficient buoyancy will prevent this prying. Further, it is effective to prevent prying when the polymerization allowance of the pumping pipe 22 and the water guiding pipe 30 is made long.

Prolonging the polymerization allowance of the pumping pipe 22 and the water guiding pipe 30 is also effective in preventing the two pipes 22 and 30 from coming off. This is because, in case of stormy weather, there is a concern that the sliding range of the two members 22 and 30 becomes long and the water guiding pipe 30 may come off from the pumping pipe 22. This concern can be eliminated by hanging a regulating chain or providing a suitable stopper structure.

Next, when winds, tidal currents and waves occur, the superstructure 12 including the floating body 28 tends to be swept or tilted accordingly. However, the anchor 16 is connected to the pumping pipe 22 that constitutes the lower structure 10,
Moreover, since the underwater floating body 20 having a sufficient buoyancy is attached, the flow and inclination of the upper structure 12 are blocked by the movement restricting force and the upright restoring force. However, water conduit 3
0 is generated between the pumping pipe 22 and the pumping pipe 22, and the same is to seal this prison with the buoyancy of the underwater floating body 20.

By the way, in the case of this example, the pumping pump 32 and the driving machine 42 for driving the pumping pump 32 are mounted on the platform 36 of the floating body 28.
As described above, it is attached to the base plate 40 that is suspended by the hanging rope 38 from the above, but in the present invention, at least two hanging ropes 38 are provided around the driving machine 42.

When the driving machine 42 is driven, the driving machine 42 tries to rotate in the opposite direction due to the reaction force thereof. However, when the suspension rope 38 is twisted by the reaction force due to the above-described configuration of the present invention, the Accordingly, the base plate 40 rises, and the increased weight and the reaction force are balanced when they balance each other. Therefore, the driving machine 4
It is not necessary to intentionally provide a mechanism for preventing rotation due to the reaction force of 2. On the contrary, in this case, the followability to the lower structure is improved, and there is an effect that the sliding between the pumping pipe 22 and the water guiding pipe 30 is not hindered.

Although the limited embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to these and can take various modified forms. Specifically, if the slidability of the pumping pipe and the water guiding pipe is impaired by the adhesion of parasites such as shells, cover this sliding part with an elastic bellows cover. Can be considered.

Further, when this phenomenon is also a concern in the suction port or the like, it is also possible to install something like a scratching blade for dropping the suction port so that the power of the driving machine operates periodically. Furthermore, this bottom layer water pumping device is used not only for fisheries but also for applications such as pumping low temperature bottom layer water to a high temperature surface layer to prevent the generation of green algae and red tide.

[0021]

According to the present invention, the following effects can be expected. a) As the pumping pipe and the water guiding pipe slide up and down, water is always absorbed from the constant bottom of the water and discharged to a constant depth below the water surface even if the water level changes due to tides and waves. That is, a fixed height pumping is secured. b) In-situ placement is achieved by anchors attached to the pumping pipe. That is, the function of leaving the device at a fixed position is performed by itself (one-point anchoring), and another device is not required. c) The underwater floating body attached to the pumping pipe maintains the uprightness of itself and the water guiding pipe, and suppresses the movement and inclination of the floating floating body. Therefore, the functions of constant height pumping and fixed position detention are not impeded by wind, tidal currents and vibrations. d) These things mean that the movement amount of the floating body on the water can be suppressed to be small, and the exclusive area required for installation can be small. e) Since the lower structure and the upper structure are divided, the size of the device does not increase. As a result, it is not necessary to use a large crane or the like for construction, and storage and transportation are easy.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a bottom layer water pumping device showing an example of the present invention.

FIG. 2 is an enlarged sectional view of an essential part of a bottom layer water pumping device showing an example of the present invention.

[Explanation of symbols]

10 Substructure 12 Superstructure 14 bottom 16 anchor 20 underwater floats 22 Pumping pipe 24 Suction port 26 Water surface 30 water pipe 32 Pumping pump 34 outlet 35 casing 36 mounts 38 hanging rope 42 Drive

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-15273 (JP, A) JP-A 1-219360 (JP, A) JP-A 4-190726 (JP, A) Registered utility model 3033869 ( (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01K 61/00 C02F 7/00 F04D 13/00 F04D 13/08

Claims (2)

(57) [Claims] 1. A substructure that is connected to an anchor that stays at the bottom of the water, forms a suction port at a position where the bottom of the bottom of the water has a constant height, and has a substructure that is composed of a pumping pipe with an underwater floating body that floats in the water above, and floats above the water surface. An upper structure consisting of a forcibly driven pumping pump that is suspended from the floating body with a discharge port at a certain depth below the surface of the water, and a water guide pipe that is slidably inserted into the pumping pipe is connected to the lower part of the structure. A bottom layer water pumping device comprising: 2. The bottom layer water pumping according to claim 1, wherein the driving machine for driving the pumping pump is suspended from the floating body at a predetermined position on the surface of the water by at least two suspension lines arranged around the driving machine. apparatus.