JPH08192181A - Ejector-type water flow generator ejector shutdown structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure of the water flow generator, to stop the operation of the ejector for cost reduction, and to enable the combined operation of simultaneously operating the ejector and watering. [Structure] A T-shaped pipe 7 is attached to a discharge port 2A of the submersible pump 2, an inlet 4A of an ejector 4 is connected to one port of the T-shaped pipe 7, and a sprinkler pipe 5 is connected to the other port of the T-shaped pipe 7. Connect the inlet 5A. On the other hand, the exit 4e of the diff user 4D
The lid 9 is attached to the hinge via the hinge 8 so as to be openable and closable, and the weight of the weight 11 always urges the lid 9 in the closing direction.
The air intake pipe 6 is provided with an air valve 12 for adjusting the air intake amount while being configured to close the outlet 4e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector type water flow generator having, for example, an aeration function for positively purifying water in a pond to improve water quality, and a sprinkling function for sprinkling pond water in the air. In particular, the present invention relates to an ejector operation stop structure for stopping the ejector operation with a simple structure.

[0002]

2. Description of the Related Art Conventionally, for example, a water flow generating device having an aeration function for positively purifying water in a pond to improve water quality and a water sprinkling function for sprinkling pond water into the air have been put into practical use. . That is, as shown in FIG. 3, this type of water flow generating device includes a submersible pump 2 attached to a float 1, a three-way valve 3 attached to a discharge port 2A of the submersible pump 2,
An ejector 4 having an inlet 4A connected to one port of the three-way valve 3, and an inlet 5A connected to the other port of the three-way valve 3 and a sprinkler pipe 5 having an outlet 5B opened above the water surface WL.
And an air suction pipe 6 which is branched and connected to the suction chamber 4C in which the throttle portion 4B of the ejector 4 is inserted and whose inlet 6A is opened above the water surface WL.

According to this type of water flow generator, the three-way valve 3
When the submersible pump 2 is operated in a state in which the water is switched to the ejector 4 side, the water discharged from the discharge port 2A becomes
It is discharged into water from the outlet 4e on the D tip side. When the water discharged from the discharge port 2A of the pump 2 passes through the throttle portion 4B, the pressure of the suction chamber 4C is reduced and the air (atmosphere) is sucked from the inlet 6A of the air suction pipe 6. Therefore, the air-water mixed fluid containing bubbles passes through the differential user 4D and exits 4
It is released into water from e. As a result, aeration can be performed, water can be positively purified, and water quality can be improved.

On the other hand, when the submersible pump 2 is operated with the three-way valve 3 switched to the sprinkling pipe 5 side, the water discharged from the discharge port 2A is jetted into the air from the outlet 5B of the sprinkling pipe 5 to perform the sprinkling. You can

By the way, in this type of water flow generator, the operating state of the ejector 4 for performing aeration and the operation stop of the ejector 4 for performing water spraying are performed by switching the three-way valve 3. That is, the conventional water flow generator requires the three-way valve 3 which has a complicated structure and is relatively expensive, and has an operation pattern in which the ejector 4 is operated to stop sprinkling and the operation of the ejector 4 is stopped. Therefore, there is a difficulty in that it is impossible to execute the combined operation in which the ejector 4 is operated at the same time and the ejector 4 is operated at the same time.

[0006]

The problem to be solved is that it requires a three-way valve having a complicated structure and a relatively high price, and that it is impossible to perform a combined operation of operating the ejector and watering at the same time. Is.

[0007]

According to the present invention, a pump, an ejector and a sprinkler having an inlet connected to a discharge port of the pump, and a suction chamber into which a throttle portion of the ejector is inserted are connected in a branch manner. In an ejector-type water flow generator comprising an air suction pipe having an inlet opening above the water surface, an outlet on the tip side of a diff user of the ejector has a lid body which is always biased in a closing direction to close the outlet. Along with being openably and closably mounted, the air suction pipe is provided with an air valve for adjusting the amount of air suction, and the operation of the ejector is stopped while simplifying the structure and reducing the cost. Achieved the purpose of executing the combined operation of ejector operation and watering at the same time.

[0008]

According to the present invention, the flow velocity of water ejected from the outlet is reduced by closing the air valve provided in the air suction pipe, and the lid body is urged in the closing direction to close the outlet of the ejector nozzle. To achieve. As a result, a sprinkling operation state in which most of the water flow is jetted from the sprinkling pipe, that is, a state in which the operation of the ejector is stopped is obtained. On the other hand, by opening the air valve, air is sucked into the suction chamber from the inlet of the air suction pipe. Therefore, the air-water mixed fluid in which air bubbles are mixed flows through the differential user toward the outlet. As a result, the occupancy rate of bubbles on the passage cross section of the ejector increases, the occupancy rate of water on the passage cross section decreases corresponding to the increase of the occupancy rate of bubbles, and the flow velocity of water is increased. By opening the lid against the force and discharging the air-water mixed fluid into the water to obtain the operating state of the ejector that performs aeration, it is also possible to obtain the sprinkling operating state in which part of the water flow is jetted from the sprinkling pipe. . That is, it is possible to execute a combined operation of simultaneously operating the ejector and watering.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is an enlarged side view of a main part. It should be noted that the same or corresponding portions as those of the conventional example will be described by attaching the same reference numerals. 1 and 2, the water flow generator includes a submersible pump 2 attached to a float 1 and a discharge port 2A of the submersible pump 2.
Connected to the T-tube 7, an ejector 4 having an inlet 4A connected to one port of the T-tube 7, and an inlet 5A connected to the other port of the T-tube 7 to connect the outlet 5B to the water surface WL.
It is provided with a water sprinkling pipe 5 which is opened to a higher level, and an air suction pipe 6 which is branched and connected to a suction chamber 4C in which the throttle portion 4B of the ejector 4 is inserted and whose inlet 6A is opened above the water level WL. .

On the other hand, a lid 9 is attached to the outlet 4e of the ejector 4 on the tip side of the diff user 4D via a hinge 8 so as to be openable and closable. An arm 10 is attached to the lid body 9, and a weight 11 is attached to the arm 10 so as to be movable in the axial direction. The weight of the weight 11 urges the lid body 9 in the closing direction at all times so that the outlet 4e. Is closed.
In addition, the air valve 12 for adjusting the air intake amount to the air intake pipe 6
Is provided.

With this construction, when the air valve 12 provided in the air suction pipe 6 is opened and the submersible pump 2 is operated, the water discharged from the discharge port 2A of the pump 2 passes through the throttle portion 4B. By doing so, the pressure in the suction chamber 4C is lowered and air (atmosphere) is sucked from the inlet 6A of the air suction pipe 6.
Therefore, the air-water mixed fluid in which the air bubbles are mixed flows through the differential user 4D toward the outlet 4e. This allows
The occupancy rate of bubbles on the passage cross section of the ejector 4 increases, and the occupancy rate of water on the cross section of the passage decreases corresponding to the increase of the occupancy rate of bubbles, increasing the flow velocity of water and attaching the lid 9 in the closing direction. The lid 9 is rotated upward against the gravity of the weight 11 that is being urged to open as shown by the phantom line in FIG. 2, and the gas-water mixed fluid is discharged into the water. As a result, aeration can be performed, water can be positively purified, and water quality can be improved. At the same time, a part of the water flow can be ejected from the water sprinkling pipe 5 to perform the water sprinkling operation. That is, it is possible to execute the combined operation in which the operation of the ejector 4 and the watering are simultaneously performed.

On the other hand, by closing the air valve 12 provided in the air suction pipe 6, the flow velocity of the water ejected from the throttle portion 4B is reduced, so that the lid 9 is rotated in the closing direction by the weight 11 of the weight 11. To close the outlet 4e. As a result, a sprinkling operation state in which most of the water flow is jetted from the sprinkling pipe 5,
That is, a state in which the operation of the ejector 4 is stopped can be obtained.

As described above, the three-way valve 3 which has been conventionally used
By omitting the use of the air valve 12, by opening and closing the outlet 4e with the lid 9 by opening and closing the air valve 12, the operation of the ejector 4 can be stopped, and the combined operation of simultaneously operating the ejector 4 and watering can be executed. Therefore, the structure can be simplified and the cost can be reduced.

[0014]

As described above, according to the present invention, the operation of the ejector is stopped and the ejector is stopped by opening and closing the outlet of the diff user by opening and closing the air valve without using the three-way valve. Since it is possible to execute the combined operation of simultaneously performing the above operation and watering, it is possible to achieve simplification of the structure and cost reduction.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is an enlarged side view showing a main part.

FIG. 3 is a side view showing a conventional example.

[Explanation of symbols]

 2 Submersible pump (pump) 2A Pump discharge port 4 Ejector 4A Ejector inlet 4B Throttling part 4C Suction chamber 4D Diff user 4e Ejector diff User tip side outlet 5 Water spray pipe 5A Water spray pipe inlet 6 Air suction pipe 6A Air suction Pipe inlet 9 Lid 12 Air valve WL Water surface

Claims (1)

[Claims] 1. A pump, an ejector and a water sprinkler having an inlet connected to a discharge port of the pump, and a suction chamber into which a throttle portion of the ejector is installed are branched and connected so that the inlet is opened above the water surface. In an ejector-type water flow generator including an air suction pipe, a lid body that is always urged in a closing direction to close the outlet is attached to an outlet of the ejector on the tip side of a diff user and is openable and closable. An ejector operation stop structure for an ejector-type water flow generator, wherein the air suction pipe is provided with an air valve for adjusting an air suction amount.