JPH0852401A - Fountain device - Google Patents

Abstract

(57) [Summary] [Purpose] For example, by making it possible to select water discharge locations from the fountain device in the air and in the water,
During the daytime, it is possible to perform operations that are useful for landscape formation and water quality conservation, and at night, it is possible to perform operations that are useful for water quality conservation without generating noise. A fountain nozzle 2 that discharges water into the air, an ejector mechanism 3 that is submerged in water, a water ejection nozzle 7 that faces a suction port 31 of the ejector mechanism 3, a submersible pump 5,
The water supply passage 6 that connects the fountain nozzle 2 and the water ejection nozzle 7 to the ejection opening 52 of the submersible pump 5, and the fountain nozzle 2 and the water ejection nozzle 7 that are interposed in the water supply passage 6 to the ejection opening 52 of the submersible pump 5. And a switching valve V for selectively switching the communication state with the switching valve V.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a fountain device.

[0002]

2. Description of the Related Art Discharging water into the air with a fountain device not only helps to form a better landscape and enjoy the appearance of water, but it also increases dissolved oxygen in water and improves water quality by the aeration effect. It is also useful for reducing or preventing the generation of bad odor due to deterioration. From the viewpoint of water quality conservation such as increasing dissolved oxygen and reducing or preventing odor, it is desirable to continuously perform fountain operation of discharging water into the air.

[0003]

However, when a fountain device installed near a house is continuously operated day and night, the falling sound of water falling on the water surface may become a noise source especially at night. May not be able to drive. Therefore, it is conceivable to operate the fountain device only in the daytime and not to operate it at night so as to eliminate noise. However, in such a case, the role of water quality preservation cannot be achieved at night. The present invention has been made under the above circumstances. For example, during the daytime, landscape formation and water quality due to aeration can be achieved by making it possible to selectively select the water discharge location from the fountain device in the air and in the water. A fountain device that can perform operation that is useful for maintenance (fountain operation) and that can perform operation that is useful for water quality maintenance by aeration stirring by discharging water entrained in air into the water (water flow generation operation). The purpose is to provide.

[0004]

A fountain device of the present invention includes a fountain nozzle for discharging water into the air, and a suction port for opening in water at one end and a discharge port for opening at the other end in water. Of an ejector mechanism having a throttle passage in the middle, an intake passage communicating with the throttle passage of the ejector mechanism and opening in the air, a water jet nozzle facing the suction port of the ejector mechanism, a submersible pump, and a submersible pump. A water supply passage that communicates the water inlet of the fountain nozzle with the water inlet of the water ejection nozzle with respect to the discharge outlet, and the water inlet of the fountain nozzle and the water ejection that are interposed in the water supply passage to the discharge outlet of the submersible pump. And a switching valve that selectively switches the communication state with the water inlet of the nozzle.

[0005]

In the fountain device configured as described above, when the operation is performed by connecting the water inlet of the fountain nozzle to the discharge port of the submersible pump by the switching valve (fountain operation), the water discharged from the fountain nozzle goes into the air. Not only does it jump out to help form the landscape, but it also helps to preserve water quality by increasing dissolved oxygen in water and preventing foul odors. On the other hand, when the operation is performed by connecting the water inlet of the water jet nozzle to the discharge port of the submersible pump by switching the switching valve, the water discharged from the water jet nozzle passes through the throttle passage of the ejector mechanism at high speed. Therefore, the throttle passage becomes a negative pressure with respect to the intake passage communicating with it and opening in the air, and air is sucked into the water flow passing through the throttle passage from the intake passage. A mixed water stream is discharged into water and stirred (water flow generation operation). Therefore, the synergistic action of aeration and agitation increases dissolved oxygen in water, improves the water quality, and reduces the generation of malodor. Also, water is discharged into the water from the ejection port of the ejector mechanism, so that the water noise is reduced and no noise is generated. Therefore, the operation that is useful for water quality conservation can be performed without making much noise.

[0006]

1 is a schematic vertical sectional view of a fountain device according to an embodiment of the present invention, and FIG. 2 is a schematic plan view of the fountain device of FIG. This fountain device is a so-called float type fountain device,
The housing 1 forming the valve chamber R is supported by the floats F, F floated in the water area such as a pond, a lake, a river, and an amusement park. A fountain nozzle 2 is installed on the housing 1. The fountain nozzle 2 has an inner peripheral surface that is constricted upward, and is provided with water inlets 22 ...
Water flows in tangentially from these water inlets 22 ... And is sprinkled around the water outlet 21 at the top in the form of petals, for example. The water discharge port 21 of the fountain nozzle 2 is
When floats F and F are floated on water, they open in the air.
3 is an ejector mechanism. The ejector mechanism 3 includes a suction port 31 at one end, a discharge port 32 at the other end, and a throttle passage 33 at an intermediate part. Then, a cover 35 is attached to the discharge port 32 of the ejector mechanism 3 so as to be slightly lowered, so that the cover 35 makes the residence time of the disturbing water flow discharged from the discharge port 32 longer in the water. is there. An intake passage 4 that opens in the air is communicated with the throttle passage 33. Reference numeral 41 is an air intake port of the intake passage 4. The ejector mechanism 3 takes a horizontal posture in which the entire float F is floated in water when the float F is floated on the water. Therefore, the suction port 31 and the discharge port 32 open in water. The water ejection nozzle 7 faces the suction port 31 of the ejector mechanism 2. A submersible pump 5 has a suction port covered by a screen 51 to prevent solid substances such as earth and sand and dust from being sucked in easily, and a discharge port 52 thereof is connected to a starting end of a water supply channel 6. The water supply path 6 connects the water inlet 22 of the fountain nozzle 2 and the water inlet 71 of the water ejection nozzle 7 to the outlet 52 of the submersible pump 5. A three-way valve (three-way switching valve) V is interposed at a branch point in the valve chamber R of the water supply passage 6,
By selectively switching the three-way valve V between two states, the communication state between the water inlet 22 of the fountain nozzle 2 and the water inlet 71 of the water ejection nozzle 7 with respect to the discharge port 52 of the submersible pump 5 is alternatively selected. It can be switched automatically. The switching of the three-way valve V can be electrically controlled remotely using the underwater cable C. In the fountain device having the above-described configuration, when the floats F, F are floated on the water W, the water discharge port 21 of the fountain nozzle 2 is exposed in the air, and the suction port 31 and the discharge port 32 of the ejector mechanism 3 and the water ejection nozzle 7, Submersible pump 2 is submerged. 3 and 4 show two different switching states of the three-way valve V, respectively. For example, as shown in FIG. 3, when the three-way valve V connects the discharge port 52 of the submersible pump 2 only to the water inlet 22 of the fountain nozzle 2 and the water inlet 71 of the water jet nozzle 7 is shut off, the fountain device is operated. The water sucked by the submersible pump 5 is fed to the fountain nozzle 2 through the water supply passage 6 and the valve passage of the three-way valve V, and the water is sprinkled into the air from the water discharge port 21 of the fountain nozzle 2. As a result, the water sprinkled from the water discharge port 21 delights the eyes of the person and is useful for landscape formation. In the water sprinkled in the air, dissolved oxygen in the air and air entrainment at the time of falling water, etc. occur, the dissolved oxygen in the water increases due to the aeration caused by these, and the water quality is improved to prevent the generation of foul odors. To be done. This action is prominently exhibited when the fountain nozzle 2 sprays water in a petal shape as in the embodiment. Landscape formation and water quality conservation are performed by this operation state (fountain operation). No water is fed to the ejector mechanism 3. On the other hand, as shown in FIG. 4, the three-way valve V is switched so that the water inlet 71 of the water jet nozzle 7 is connected to the discharge port 52 of the submersible pump 2.
When the fountain device is operated with the water inlet 22 of the fountain nozzle 2 blocked, the water sucked into the submersible pump 5 passes through the water supply passage 6 and the valve passage of the three-way valve V, and the water ejection nozzle 7 The water discharged to the water jet nozzle 7 passes through the throttle passage 33 of the ejector mechanism 3 at high speed. Therefore, the throttle passage 33 has a negative pressure with respect to the intake passage 4 communicating with it and opening in the air, and air is sucked into the water flow passing through the throttle passage 33 from the intake passage 4.
Then, the water that has sucked in the air is discharged into the water from the discharge port 32 of the ejector mechanism 3, and a violently disturbed water flow containing bubbles is generated. Therefore, the dissolved oxygen in the water is increased by efficient aeration due to the disturbance of water, the water quality is improved, and the generation of malodor is reduced. Therefore, the water quality is maintained by this operation state (water flow generation operation). In particular, in this embodiment, the cover 35 suppresses the floating of the bubbles mixed in the disturbing water flow discharged from the discharge port 32 to the surface of the water and helps the bubbles to stay in the water. Becomes longer and the amount of oxygen dissolved in water increases, which greatly contributes to the improvement of water quality. This action is further facilitated by the cover 35 being inclined downward. The above-described water flow generation operation does not cause water to drop on the water surface, so noise is less likely to occur, and operation that is useful for water quality conservation is performed without significant noise. The fountain operation and the water flow generating operation described above can be arbitrarily selected by switching the three-way valve V. Therefore, for example, if fountain operation is selected during the day and water flow generation operation is selected during the night, continuous operation is performed during the day and night. Helpful driving is done without noise. 3 and 4, arrows a and b represent water discharged from the fountain nozzle 1 or the discharge port 32 of the ejector mechanism 3. In this embodiment, the fountain nozzle 2 is of a type that sprinkles water in the air. However, as the fountain nozzle 2, the fountain nozzle 2 ejects water into the air in a rod shape or in other forms. It is also possible to use a type that releases into

[0007]

According to the fountain device of the present invention, it is possible to switch between the fountain operation for discharging water into the air and the water flow generation operation for discharging water into the water by switching the three-way valve, so that landscape formation and water quality conservation can be achieved. The operating state that is useful for water quality and the operating state that is useful for water quality conservation in a noise-free state,
It will be possible to choose freely. Therefore, for example, by assigning daytime to operations that are useful for landscape formation and water quality conservation, and assigning nighttime to operations that are useful for water quality conservation, driving that is useful for water quality conservation can be continuously performed day and night without causing noise damage to local residents. Then you will be able to do it. In particular, when the water flow generation operation is performed, the effect of entraining air into the water by the ejector mechanism is exerted, so that the effect of increasing dissolved oxygen in the water or improving the water quality and reducing the generation of malodor is remarkable. To be demonstrated.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a fountain device according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the fountain device of FIG.

FIG. 3 is an explanatory diagram of fountain operation.

FIG. 4 is an explanatory diagram of a water flow generation operation.

[Explanation of symbols]

 2 Fountain nozzle 3 Ejector mechanism 4 Intake channel 5 Submersible pump 6 Water supply channel 7 Water jet nozzle 22 Water fountain nozzle water inlet 31 Suction port 32 Discharge port 33 Throttling passage 52 Submersible pump discharge port V Three-way valve (switching valve)

Claims (1)

[Claims] 1. An ejector having a fountain nozzle that discharges water toward the air, a suction port that opens in water at one end, a discharge port that opens in water at the other end, and a throttle passage in the middle part. Mechanism, the intake passage communicating with the throttle passage of the ejector mechanism and opening in the air, the water jet nozzle facing the suction port of the ejector mechanism, the submersible pump, and the water inlet of the fountain nozzle with respect to the discharge port of the submersible pump And a water supply channel communicating with the water inlet of the water ejection nozzle, and a communication state between the water inlet of the fountain nozzle and the water inlet of the water ejection nozzle with respect to the outlet of the submersible pump interposed in the water supply channel. And a switching valve for selectively switching.