JP2540536Y2 - Water quality preservation equipment such as reservoirs - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality preservation device for a lake, a marsh, a reservoir, a reservoir, and the like.

[0002]

2. Description of the Related Art Generally, enclosed water bodies, ie, lakes, marshes, reservoirs, agricultural ponds, etc., have an inflow of organic substances due to the development of upstream basins, an increase in nutrients such as nitrogen and phosphorus, and abnormal occurrence of plankton. As a result, the water quality deteriorates and emits offensive odors, and the environment is impaired. Therefore, various water quality conservation facilities have been proposed and implemented as countermeasures.

Heretofore, a floating propeller water jet has been employed as an example of this type of apparatus, particularly at a water depth of 5 m.
It is effective in controlling eutrophication in the following ponds. In this floating propeller water jet machine, a submersible motor is suspended from the float with a horizontal axis and the propeller is fixed to the motor output shaft. The rotation of the propeller causes flow in the pond water, produces an aeration effect, and dissolves. Oxygen content can be improved.

[0004]

[Problems to be Solved by the Invention] In the prior art, however, in the case of a basin having a relatively shallow water depth, the portion exposed on the water surface is increased, and the size is restricted. And there are problems such as an unfavorable appearance. The present invention has been made in view of the above situation, and its purpose is to effectively generate water flow in pond water even in relatively shallow ponds without damaging the landscape. Another object of the present invention is to provide a water quality preservation device capable of simplifying maintenance management and reducing costs.

[0005]

In the present invention, the following technical measures have been taken in order to achieve the above object. That is, according to the present invention, one or a plurality of water discharge pipes provided with a large number of water ejection nozzles at appropriate intervals are arranged at least at the outer peripheral part of a reservoir or the like, and a pump is provided at at least one end of the water discharge pipe. The water jet nozzle is provided so as to be inclined and inward at an acute angle with respect to the water discharge pipe with respect to the water discharge pipe so as to generate a swirling flow in a certain direction in the pond water.

Further, the present invention is characterized in that an ejector is provided in place of the pump, and that the present invention is characterized in that water jets are floated at appropriate intervals on the water surface corresponding to the water discharge pipe.

[0007]

According to the present invention, the pond water is introduced into the water discharge pipe by the operation of the pump, and the pond water is jetted into the water in a predetermined direction from a number of water jet nozzles of the water discharge pipe. Occurs. Due to this swirling flow, plankton such as blue-green algae cannot be stopped and is sheared, and the upper and lower water is switched, and the water temperature is lowered, and deterioration of the water quality due to propagation of the blue-green algae is suppressed, and water quality is preserved. In addition, by using an ejector instead of the pump, air is ejected together with water from the water ejection nozzle, and an aeration effect is generated to improve the dissolved oxygen amount.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. A water discharge pipe (2) is disposed substantially all around the water at the outer periphery of the reservoir (1) at an appropriate depth, and the water discharge pipe (2) has: A large number of water jet nozzles (3) are provided at appropriate intervals at predetermined intervals, and submersible pumps (4) and (5) are provided at one end and in the middle of the water discharge pipe (2).

The water jet nozzle (3) is provided at the center of the reservoir (1) of the water discharge pipe (2) at an acute angle with respect to the axis of the water discharge pipe (2), that is, the direction of water flow, so as to be inclined inward. As a result, a swirling flow is generated in the pond water in the direction shown by the arrow (a). If the area of the reservoir (1) is large, the number of pumps (4) is increased, or the water flowers (5) are floated at appropriate intervals as shown in FIG. 1 to increase the flow of pond water. be able to.

In the center of the reservoir (1), a fountain (6)
To further enhance the aeration effect,
The landscape can be improved. FIG. 2 shows a second embodiment of the present invention, in which a water discharge pipe (2) is arranged in a spiral shape, a pump (4) is connected to one end on the outer peripheral side of the water discharge pipe (2), and a fountain is connected to the inner end. It is provided with a nozzle (7), and is suitable for a reservoir having a medium area (1). Also in the second embodiment,
The same operation and effect as in the first embodiment can be expected.

FIG. 3 shows a third embodiment of the present invention, in which the water discharge pipes (2A), (2
B) and (2C) are provided in a circular shape, and each water discharge pipe (2A),
(2B) and (2C) show water jet nozzles (3A) and (3C), respectively.
B) and (3C), and a pump (4
A), (4B), and (4C) are connected, and the inner peripheral water discharge pipe (2
The inner end of C) is located at the center of the pond (1) and is connected to the fountain nozzle (7), and is suitable for a pond having a relatively large area.

In the third embodiment, the same operation and effect as in the other embodiments can be expected. The second,
Also in the third embodiment, the pumps (4), (4A), (4
B) and (4C), the number of installations can be increased, and an ejector can be used instead of the pumps (4), (4A), (4B), and (4C), and a water flow machine may be additionally provided. Of course. The water jet nozzles (3), (3A), (3B), and (3C) are respectively connected to the water discharge pipes (2), (2A), (2B), (2
C), the amount of water jetted from each nozzle can be adjusted. Further, an algicide or fish food can be fed to the discharge side or the suction side of each pump (4).

[0013]

According to the present invention, as described above, one or a plurality of water discharge pipes provided with a large number of water ejection nozzles at appropriate intervals are arranged at least on the outer peripheral portion of a reservoir or the like. A pump is provided at at least one end of the water discharge pipe, and the water jet nozzle is provided in an inclined manner and inward at an acute angle with respect to a water discharge pipe so as to generate a swirling flow in a pond water in a certain direction. Because it is a feature
In particular, reservoirs with relatively shallow water depths (eg, 1 m or less)
The water can be effectively generated in the pond water, and the generation of algae can be suppressed to maintain the water quality by maintaining it. The maintenance and management are simple, and the landscape is not damaged because there are no floating objects on the water surface. Equipment costs and operating costs can be reduced.

Further, the present invention employs an ejector instead of a pump, thereby ejecting a mixed flow of air and water into the pond water to produce an aeration effect in the pond, increasing the amount of dissolved oxygen and increasing water quality. Conservation can be made more effective. Further, the flow of pond water can be further increased by floating water jets at appropriate intervals on the water surface corresponding to the water discharge pipes.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a second embodiment of the present invention.

FIG. 3 is a plan view showing a third embodiment of the present invention.

[Explanation of symbols]

 1 Reservoir 2, 2A, 2B, 2C Discharge pipe 3, 3A, 3B, 3C Water jet nozzle 4, 4A, 4B, 4C Pump 5 Water flow machine

Claims (3)

(57) [Scope of request for utility model registration] 1. A water discharge pipe provided with a large number of water jet nozzles provided at appropriate intervals at least at an outer peripheral portion of a reservoir or the like in one or a plurality of turns. A pump is provided at at least one end of the water discharge pipe. A water quality preservation device for a pond or the like, characterized in that the water jet nozzle is provided in an inclined manner and inward at an acute angle with respect to a water discharge direction with respect to a water discharge pipe so as to generate a swirling flow in a certain direction in pond water. . 2. An apparatus according to claim 1, wherein an ejector is provided in place of said pump. 3. The water quality preserving device according to claim 1, wherein water jets are floated on the water surface at appropriate intervals corresponding to the water discharge pipes.