JPH06339697A - Bubble generation device - Google Patents

Abstract

PURPOSE:To facilitate installation work and maintenance services by drawing air by water suction pressure of a submerged pump through an air suction means, and at the same time, mixing/stirring air and water using an impeller to permit generation of bubbles from a suspended water discharge hose tip. CONSTITUTION:This bubble generation device is equipped with a submerged pump 1 having an impeller 5 which sends under pressure the water drawn from a water suction orifice 11b toward a water discharge orifice 4 using a motor 2 which drives the impeller to rotate, an air suction means 6 with one end part protruding open above a water level and the other end part facing the water suction orifice 11b of the submerged pump 1, and a water discharge hose 12 connected to the water discharge orifice 4. Air is sucked by water suction pressure of the submerged pump 1 through the air suction means 6, and at the same time, the air and water are mixed and stirred using the impeller 5 to generate the bubbles from the tip of the suspended water discharge hose 12. Consequently, it is possible to perform installation work and maintenance services easily and obtain a great aeration effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble generator for generating bubbles using an underwater pump and supplying oxygen into water to purify waste water.

[0002]

2. Description of the Related Art Conventionally, as this type of bubble generating device,
Some of them use an underwater aeration method in which bubbles are generated in water by a compressor or a blower, and others use an injector effect by pump water pressure to perform air diffusion.
In these bubble generators, an underwater pipe and an air diffusing pipe are arranged in water.

[0003]

However, in the above-mentioned conventional example, there is a problem that the work of piping in water or disposing the diffuser pipe is troublesome, and much cost and time are required for maintenance. . In addition, since air is only ejected into the water from the nozzle hole, the particle size of the generated bubbles becomes large, and the gas-liquid contact area and contact time are reduced, and a large aeration effect (oxygen dissolution efficiency) is expected. There was a problem that I could not.

The present invention has been made in view of the above-mentioned points, and an object thereof is to facilitate installation work and maintenance, obtain a great aeration effect, and further to provide an arbitrary position ( In particular, it is intended to provide a bubble generating device capable of generating bubbles in deep water).

[0005]

SUMMARY OF THE INVENTION An air bubble generator according to the present invention comprises a submersible pump equipped with an impeller which is driven to rotate by a motor to pump water sucked from a water inlet toward a water outlet, and one end of which is above the water surface. It is composed of an intake means with a protruding opening open to the other end facing the water inlet of the submersible pump, and a water discharge hose connected to the water outlet, and sucks air at the water absorption pressure of the submersible pump via the intake means. The air and water are mixed and stirred by an impeller so that air bubbles are generated from the tip of the hanging water discharge hose.

[0006]

The present invention is configured as described above, and has a submersible pump equipped with an impeller that is rotationally driven by a motor to pump the water sucked from the water suction port toward the water discharge port.
It consists of an intake means with one end protruding above the water surface and the other end facing the water intake of the submersible pump, and a water discharge hose connected to the water discharge outlet. The air is sucked in, and the air and water are mixed and stirred by an impeller, and air bubbles are generated from the end of the suspended water discharge hose. Therefore, there is an effect that installation work and maintenance can be easily performed. Moreover,
Since water and air are agitated and mixed by the impeller, the particle size of bubbles becomes small, the gas-liquid contact area becomes large, and the contact time becomes long, and a large aeration effect is obtained. Further, a water discharge hose is connected to the water discharge port, and bubbles can be generated at any position by moving the tip of this water discharge hose to a position where bubbles are to be generated. Especially if you hang down the water spout hose,
Even if the output of the submersible pump is small, bubbles can be generated at deep water positions.

[0007]

1 and 3 show an embodiment of the present invention, in which a submersible pump equipped with an impeller 5 which is rotationally driven by a motor 2 and pumps water sucked from a water inlet 3 toward a water outlet 4. 1, and an intake means having one end protruding and opened above the water surface and the other end facing the water intake 3 of the submersible pump 1,
It is composed of a water discharge hose 12 connected to the water discharge port 4, sucks air by the water suction pressure of the submersible pump 1 through the suction means, and also mixes and stirs the air and water by the impeller 5 to make it droop. In addition, bubbles are generated from the tip of the water discharge hose 12.

In the embodiment, the intake means is composed of the intake pipe 6a, the intake hose 6, and the annular communicating portion 11a provided so as to surround the water inlet 3, and the communicating portion 1
The check valve 11 is formed by a valve body 11b made of an annular elastic material provided so as to close the upper opening of 1c. Further, when too much air is sucked into the submersible pump 1, the pumping function is deteriorated, so that the air sucked by the air adjusting valve 8 can be adjusted to an appropriate amount.

Further, the impeller 5 attached to the rotary shaft 2a of the motor 2 is provided with a large number of fine holes 5a, and the generation of ultrasonic waves by the fine holes 5a enables generation of finer bubbles. I have to. In the figure, reference numeral 7 is a waterproof case, which is suspended by a rope 9, and electric power is supplied to the motor 2 by a power line 10 introduced in a watertight manner. .

The operation will be described below. Now, when installing the bubble generator X according to the present invention, as shown in FIG. 2, it suffices to suspend it by a rope 9 in a water tank Y, and a special underwater pipe and diffuser pipe as in the conventional example. Installation work (withdrawal work) and maintenance work can be performed easily without the need to arrange. Further, since the air is introduced from the water suction port 3 side of the submersible pump 1 and the introduced air and water are mixed and stirred by the impeller 5, fine bubbles can be generated. Since the particle size of the bubbles is small, the gas-liquid contact area is large and the contact time is long, so that a large aeration effect can be obtained.

A water discharge hose 12 is connected to the water discharge port 4, and bubbles can be generated at any position by moving the tip of the water discharge hose 12.
In particular, when the water discharge hose 12 is hung down as shown in FIG. 2, there is an effect that bubbles can be generated at a deep position even when the output of the submersible pump 1 is small. According to the experiments by the researchers, a 1-hp submersible pump 1
It has been confirmed that when the bubble generator X using is installed at a water depth of 2 m, if the water discharge hose 12 is hung, it is possible to generate bubbles at a water depth of 5 m.

On the other hand, since the bubble generator X is arranged in water, when the submersible pump 2 is stopped for some reason, the waste water flows backward from the intake port 3 side of the intake means, which is inconvenient (for example, the intake pipe 6). However, since the check valve 11 is provided in the present embodiment, the dirty water W does not enter the annular communication portion 11a of the intake means and the pipe 6. Even when the operation of the bubble generating device X is stopped, the clogging of the intake means can be reliably prevented.

[0013]

As described above, the present invention provides a submersible pump equipped with an impeller for rotating water by a motor and pumping water sucked from a water inlet toward a water outlet, and one end of which is projected and opened above the water surface. It consists of an air intake means with the other end facing the water intake of the submersible pump and a water discharge hose connected to the water discharge outlet.The air is sucked by the water absorption pressure of the submersible pump through the air intake means and the impeller is used. Air and water are mixed and stirred, and air bubbles are generated from the end of the hanging water discharge hose.Bubbles can be generated simply by suspending in water, making installation work and maintenance easy. There is an effect that can be. Moreover, since the impeller mixes water and air with stirring, the particle size of the bubbles becomes smaller, the gas-liquid contact area becomes larger, and the contact time becomes longer and a large aeration effect is obtained. Further, a water discharge hose is connected to the water discharge port, and bubbles can be generated at any position by moving the tip of this water discharge hose to a position where bubbles are to be generated. In particular, if the water discharge hose is hung down, it is possible to generate bubbles at a deep water position even if the output of the submersible pump is small.

[Brief description of drawings]

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

FIG. 2 is an operation explanatory diagram of the above.

[Explanation of symbols]

 1 Submersible pump 2 Motor 3 Water inlet 4 Water outlet 5 Impeller 6 Intake pipe 12 Water outlet hose

Claims (1)

[Claims] 1. A submersible pump equipped with an impeller that is driven to rotate by a motor and pumps water sucked from a water inlet toward a water outlet, and one end of the submersible pump protruding above the water surface and the other end of the submersible pump absorbing water. It is composed of an air intake means facing the mouth and a water discharge hose connected to the water discharge outlet.The air is sucked by the water pressure of the submersible pump through the air intake means, and the impeller mixes the air and water. An air bubble generating device characterized in that air bubbles are generated from the tip of a water discharge hose that hangs down.