JP3110165B2 - Mooring type suction pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mooring type suction pump.

[0002]

2. Description of the Related Art For example, seawater circulation and aeration means for improving water quality by pumping bottom water in a stagnant sea area and diffusing the bottom water into the sea surface have heretofore been known as an air compressor as described below. 2. Description of the Related Art There is known a pressurized pumping device using a water pump. That is, in FIG. 4, reference numeral 11 denotes a cylindrical pumping cylinder which is submerged under water and stands upright.
A buoyancy body 5 moored to the seabed by 2 and attached to the upper end
Upright by. The operation principle is that air pressurized by the air compressor 15 is supplied through the air supply pipe 14 to the lower air chamber 1.
3 so that the air mass 16
Is generated, and seawater near the seabed is pumped onto the sea surface using the rising power and diffused.

[0003]

However, in this type of seawater pumping apparatus, it is necessary to compress the air to a pressure higher than the water depth in order to send the air to the vicinity of the seabed, and thus a large power is required. For example, if the water depth is 10 m, the compressed air needs a pressure of 1 kgf / cm ² or more. On the other hand, the present inventor needs to create a negative pressure of about -0.1 kgf / cm ² irrespective of the depth of the water, if the negative pressure is used. It has been realized that an economical pumping system that requires much less power can be realized. Whereas the conventional one is the idea of pumping seawater from the sea floor, the one of the present invention pumps seawater at the top of the pumping cylinder, and the seawater near the seabed from the lower end of the pumping cylinder naturally enters by that much. It is based on the idea of coming.

[0004] The present invention has been proposed in view of such circumstances, and an object of the present invention is to provide an economical moored water suction type suction pump capable of greatly reducing the required power.

[0005]

For this purpose, a mooring type suction pump according to the present invention has a vertical position in which a floating body is attached to an upper portion, a lower portion is moored to a seabed via a chain, and an upper end protrudes above the water surface. a basin-like pumping tank upper end opened in a pumping cylinder erected in the water, a larger diameter than the pumping tube is formed in the vicinity of the upper end of the <br/> lifting water bottle, arranged above the same basin-like pumping tank An inverted basin-shaped pumping lid in which the lower end of the side wall extending downward is immersed in the stored water in the basin-shaped pumping tank,
It comprises a vacuum pump for evacuating the air inside the same inverted basin-like pumping lid, the pumping cylinder and the inverted basin-like pumping lid and the annular cross-sectional area above the basin-like pumping tank and the inverted basin shaped between It is characterized in that it is larger than the annular cross-sectional area between the pump and the pump.

[0006]

According to such a configuration, when the air in the inverted basin-shaped lid plate (hereinafter referred to as a pumping lid) is evacuated by the vacuum pump, the inner peripheral annular partition of the basin-shaped tank is raised as the water level rises. The water level of the part descends, and when the water level reaches the lower end of the combing of the pump lid, the vacuum in the internal space of the pump lid is broken. Then, the high water level in the pumping lid flows through the dots due to the water level difference toward the low water level of the inner peripheral annular partition of the basin-shaped tank. At this time, the horizontal cross-sectional area of the high water level is large and the low water level Because of the small horizontal cross section of
A significant amount of water falls over the top of the basin and diffuses into the external water with bubbles. By repeating such an operation, while the vacuum pump is being driven, the bottom water is sequentially sucked into the pump lid via the pump cylinder,
By intermittently falling from the basin-like tank, the circulation of bottom water and the aeration thereof are repeated.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is an overall vertical sectional view, FIG. 2 is an explanatory view showing an explanation of a pumping mechanism in FIG. 1, and FIG. 3 is a horizontal sectional view taken along the line III-III in FIG. is there.

First, in FIG. 1, reference numeral 1 denotes a cylindrical pumping cylinder which stands upright in the sea, and 2 denotes a circular water basin which is coaxially attached to the upper end of the pumping cylinder 1 and has a larger diameter than the pumping cylinder and an open upper end. It is a pumping tank. Reference numeral 3 denotes a pump lid, which is disposed so that the lower end of the cylindrical side wall is slightly immersed in seawater stretched inside the pump tank 2 at an appropriate distance as shown in the figure. An intake hole 4 is provided. Reference numeral 5 denotes an annular buoyant body which supports the weight of the pumping cylinder 1, the pumping tank 2 and the pumping lid 3 coaxially fixed to the lower surface of the pumping tank 2 and the weight of seawater pumped into them. 6 is a pumping cylinder 1
Chains that lock the lower end of the to the sinker 7 on the sea floor,
8 is an intake hose, 9 is a vacuum pump.

In such an apparatus, the inside of the pump lid 3 is evacuated by applying a vacuum to the vacuum pump 9, thereby pumping seawater near the sea bottom through the pump cylinder 1.
The seawater is circulated up and down by overflowing from the pumping tank 2 and diffusing to the sea surface. The feature of this device is the correlation between the heights of the side walls of the pumping tank 2 and the pumping lid 3, and these act as a kind of switching valve,
Pumping low-rise water while repeating suction of seawater and its overflow.

Hereinafter, the process will be described with reference to FIG. In the state, the inside of the pump lid 3 is in an atmospheric pressure state,
Seawater accumulates in the pumping tank 2 up to its side wall , and the water level in the pumping cylinder 1 is the same as the sea level of the external seawater.
The state indicates a suction / pumping state. When the pump 3 is evacuated from the suction hole 4 by the vacuum pump 9, the internal pressure of the pump lid 3 becomes negative pressure, and the bottom water rises from the lower end opening of the pumping cylinder 1 accordingly. Will come. Accordance evacuation progresses, pumping inner level of the lid 3 is further increased, whereas the water level of <br/> pumping tank 2 of the outer come gradually decreases. The state is
This indicates a state in which bubbles are mixed, and as shown by a white arrow, the air enters around as a lump of foam around the lower end of the pumping lid 3, and the vacuum of the pumping lid 3 is broken at a stroke. The state is an overflow state, and the air pressure in the figure cannot be maintained because the negative pressure is alleviated due to the inclusion of air bubbles in the figure,
The water overflows from the upper end of the pumping tank 2 while lowering the water level. The overflow stops when the internal pressure (negative pressure) of the pumping lid 3 and the water level are balanced, and thereafter returns to the suction pumping state in FIG.

Thus, the state [→→] → [→
→] is repeated to continuously pump the bottom water. Then, in order to overflow to occur, lifting water bottle 1, is required the following relationship therebetween pumping tank 2 and pumping the lid 3. That is, as shown in FIG. 3, when the annular cross-sectional area between the pumping cylinder 1 and the pumping lid 3 is A, and the annular cross-sectional area between the pumping lid 3 and the pumping tank 2 is B, A is larger than B. It is necessary that A is larger than B , especially A >> B. As a result, even when the water level of only the portion of the annular cross section A continues to fall near the end of the overflow, the overflow from the portion of the annular cross section B is vigorously performed.

[0012]

According to the present invention, the bottom water can be pumped up and diffused to the sea surface in this way, and the seawater in the bottom layer and the upper layer is exchanged or circulated, which has recently become a problem in closed sea areas in various places. A great effect can be expected to improve the deterioration of the water quality. At that time, when seawater overflows, air is mixed into the seawater and touches the air, so that oxygen is supplied to the pumped bottom water. In the pumping cylinder of the present invention, when the water depth is large, the pumping cylinder only needs to be extended downward as it is, and there is no need to increase the power for operating the pumping cylinder. The power for operating the pumping cylinder is -0.1 kgf / cm as described above.
It may be about ² (about -1 m in water head), and this device can be operated effectively with extremely small power.

In short, according to the present invention, a floating body is attached to an upper part, a lower part is moored to the seabed via a chain, and an upper end stands underwater in a vertical posture in which an upper end protrudes above the water surface. a basin-like pumping tank upper end a larger diameter and the opening than the pumping tube is formed in the vicinity of the upper end of, disposed above the same basin-like pumping tank, the lower end of the side walls extending downwardly in the basin-like pumping tank annular cross between the inverted basin-like pumping lid immersion in reservoir water, the air inside the same inverted basin-like pumping lid will comprise a vacuum pump for evacuating the said pumping cylinder and the inverted basin-like pumping lid Economical water-moored suction-type pumping apparatus that can greatly reduce the required power by increasing the area compared to the annular cross-sectional area between the basin-shaped pumping tank and the inverted basin-shaped pumping lid. Therefore, the present invention Those above extremely beneficial.

[Brief description of the drawings]

FIG. 1 is an overall vertical sectional view showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a description of a pumping mechanism in FIG. 1;

FIG. 3 is a horizontal sectional view taken along the line III-III in FIG. 1;

FIG. 4 is an overall vertical sectional view showing a conventional water surface mooring type water pump.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pumping cylinder 2 Pumping tank 3 Pumping lid (inverted basin-like lid plate) 4 Inlet hole 5 Floating body 6 Chain 7 Sinker 8 Hose 9 Vacuum pump

Claims (1)

(57) [Claims] A floating body is attached to an upper part, a lower part is moored to a seabed via a chain, and an upper end is formed in a vertical posture protruding above the water surface and standing in the water, and formed near the upper end of the same. a basin-like pumping tank upper end a larger diameter and the opening than the pumping tube is, disposed above the same basin-like pumping tank, the lower end of the side wall extending downward is immersed in the reservoir water in the basin-like pumping tank An inverted basin-shaped pumping lid, and a vacuum pump for evacuating the air inside the inverted basin-shaped pumping lid, and an annular cross-sectional area between the pumping cylinder and the inverted basin-shaped pumping lid. A mooring type suction-type pumping device, characterized in that the size is larger than the annular cross-sectional area between the basin-like pumping tank and the inverted basin-like pumping lid.